WO2025159424A1 - Circuit breaker - Google Patents

Abstract

A circuit breaker is disclosed. The circuit breaker according to one aspect of the present invention may include: a circuit breaker body having a space formed therein; a terminal coupled to the circuit breaker body and electrically connected to the outside to be at least partially exposed to the outside of the circuit breaker body along one direction; and a cooling device coupled to the circuit breaker body to be adjacent to the terminal and configured to receive heat generated from the terminal, wherein the cooling device includes: a cooling frame surrounding the terminal from the outside and having a cooling fluid flow space formed therein; and a discharge opening formed through the other side except for one side facing the circuit breaker body among each side of the cooling frame to communicate the cooling fluid flow space with the outside, and forming a passage through which cooling fluid is discharged.

Description

crossing gate

The present invention relates to a circuit breaker, and more particularly, to a circuit breaker having a structure capable of effectively cooling generated heat.

A circuit breaker is a device that allows or blocks external current flow through the contact and separation of fixed and movable contacts. The fixed and movable contacts provided in the circuit breaker are each connected to an external power source or load so that current can flow through them.

The movable contact is provided in the circuit breaker so that it can move toward or away from the fixed contact. When the movable contact and the fixed contact are in contact, the circuit breaker can be connected to an external power source or load.

At this time, the fixed or movable contact is electrically connected to an external power source or load via a terminal provided in the circuit breaker. In other words, the terminal mediates the connection between the fixed or movable contact and the external power source or load. While the circuit breaker electrically connects the external power source and load, heat is generated in the terminal.

If the heat generated in the terminal is not dissipated, it will remain in the circuit breaker. If the heat remains in the circuit breaker for an extended period of time, the heat could damage the circuit breaker's components. In particular, since the terminal is made of a current-conducting material and is relatively vulnerable to heat, there is a risk of thermal damage to the terminal.

In this case, there is a risk that the electrical connection reliability between the terminal and the external power source or load may be reduced. Furthermore, the connection reliability between the terminal and the fixed or movable contact may also be reduced, potentially reducing the circuit breaker's operational reliability.

Therefore, technologies are required to quickly and effectively dissipate heat generated in circuit breakers, especially terminals.

Japanese Patent Publication No. 2023-178483 discloses a blocking device. Specifically, the device can cool an arc generated in an internal space using a cooling body positioned within the internal space. The prior art document discloses that the arc is quickly cooled by the cooling body, thereby preventing damage to the internal components of the blocking device.

However, the blocking device disclosed in the above-mentioned prior art merely provides a method for cooling the heat of the arc. The above-mentioned prior art fails to provide a method for cooling a configuration in which the blocking device is electrically connected to an external power source or load.

Korean Patent Document No. 10-2599372 discloses a distribution panel equipped with a cooling unit. Specifically, the distribution panel includes a cooling unit positioned at an air outlet connecting the interior space and the exterior, thereby discharging air from the interior space to the exterior of the housing.

However, the distribution board equipped with a cooling unit disclosed in the above-mentioned prior art document only provides a method for cooling components located within the internal space. The above-mentioned prior art document does not provide a method for cooling components exposed to the outside of the housing, such as terminals.

Japanese Patent Publication No. 2023-178483 (December 14, 2023)

Korean Patent No. 10-2599372 (November 2, 2023)

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a circuit breaker having a structure capable of effectively cooling a configuration that is electrically connected to the outside.

Another object of the present invention is to provide a circuit breaker having a structure in which a plurality of components that are electrically connected to the outside can each be cooled.

Another object of the present invention is to provide a circuit breaker having a structure in which a plurality of components that are electrically connected to the outside can be independently cooled.

Another object of the present invention is to provide a circuit breaker having a structure capable of arranging a configuration provided for cooling while minimizing structural changes to other configurations.

Another object of the present invention is to provide a circuit breaker having a structure in which a fluid for cooling a component that is electrically connected to the outside can be actively provided.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

According to one aspect of the present invention, a circuit breaker is provided, comprising: a circuit breaker body having a space formed therein; a terminal coupled to the circuit breaker body, electrically connected to the outside, and at least partially exposed to the outside of the circuit breaker body along one direction; and a cooling device coupled to the circuit breaker body so as to be adjacent to the terminal and configured to receive heat generated from the terminal, wherein the cooling device includes a cooling frame surrounding the terminal from the outside and having a cooling fluid flow space formed therein; and a discharge opening formed through each side of the cooling frame except for one side facing the circuit breaker body, communicating the cooling fluid flow space with the outside, and forming a passage through which cooling fluid flows out.

At this time, the cooling device may be provided with a circuit breaker, which includes a connecting through hole formed penetrating the inside of the cooling frame along the one direction and receiving the terminal, and the discharge opening is formed on a side of each side of the cooling frame facing the terminal, so that the cooling fluid discharged from the discharge opening is configured to further cool the terminal.

Additionally, the cooling device may include an inner periphery of a cooling frame extending around the terminal, and the discharge opening may be provided with a circuit breaker formed on the inner periphery of the cooling frame.

At this time, the discharge opening may be provided with a circuit breaker formed in a pair of portions that surround the terminal in the width direction among the portions inside the cooling frame.

In addition, a circuit breaker may be provided in which a plurality of the above discharge openings are provided, and the plurality of the above discharge openings are spaced apart from each other along the height direction of the terminal in a pair of the above portions inside the cooling frame.

At this time, the discharge opening may be provided with a circuit breaker formed on one side of each side of the cooling frame opposite to the circuit breaker body.

In addition, the cooling frame may be positioned opposite the circuit breaker body along the one direction, and includes an outer surface of the cooling frame covering the cooling fluid flow space, and the discharge opening may be formed on the outer surface of the cooling frame, so that the circuit breaker can be provided.

At this time, the cooling device may be provided with a circuit breaker, which includes a coupling through-hole formed through the inside of the cooling frame along the one direction and receiving the terminal, and a plurality of the discharge openings are provided, and the plurality of the discharge openings are spaced apart along the outer surface of the cooling frame so as to surround the coupling through-hole.

Additionally, the cooling device may be provided with a circuit breaker including a flow-forming member accommodated in the cooling fluid flow space and arranged to at least partially cover the discharge opening along the one direction.

At this time, the cooling device may be provided with a circuit breaker that is coupled to one side of the cooling frame in the height direction and includes a communication member that is connected to an external compressor and the cooling fluid flow space to receive the cooling fluid.

Additionally, a circuit breaker may be provided, which includes a control unit that is communicatively connected to the compressor and configured to control the flow rate and flow of the cooling fluid.

At this time, a circuit breaker may be provided in which the circuit breaker body includes a temperature sensor positioned adjacent to the terminal and configured to detect information about the temperature at a location adjacent to the terminal, and the control unit is configured to be communicatively connected to the temperature sensor to receive the detected information and to calculate control information for controlling the compressor using the information.

In addition, a circuit breaker may be provided in which a plurality of terminals are provided, the plurality of terminals are spaced apart from each other along the other direction, and the plurality of temperature sensors are provided, the plurality of temperature sensors are spaced apart from each other so as to be positioned adjacent to the plurality of terminals along the other direction.

At this time, a circuit breaker may be provided in which a plurality of the cooling devices are provided, the plurality of the cooling devices being positioned adjacent to the plurality of the terminals, respectively, and fluidly connected to the plurality of the compressors, and the control unit is configured to be communicatively connected to the plurality of the temperature sensors and the plurality of the compressors, respectively, and to independently control the plurality of the compressors.

According to the above configuration, the circuit breaker according to the embodiment of the present invention can effectively cool a configuration that is electrically connected to the outside.

In addition, according to the above configuration, the circuit breaker according to the embodiment of the present invention can cool a plurality of components that are electrically connected to the outside.

In addition, according to the above configuration, the circuit breaker according to the embodiment of the present invention can have a plurality of components that are electrically connected to the outside and can be cooled independently.

In addition, according to the above configuration, the circuit breaker according to the embodiment of the present invention can be configured to provide cooling while minimizing structural changes to other configurations.

Additionally, according to the above configuration, the circuit breaker according to the embodiment of the present invention can be actively provided with a fluid for cooling a configuration that is electrically connected to the outside.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

FIG. 1 is a perspective view illustrating a circuit breaker according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing the circuit breaker of Figure 1.

Figure 3 is a perspective view showing the circuit breaker body and terminal provided in the circuit breaker of Figure 1.

Figure 4 is a front view showing the circuit breaker body and terminal of Figure 3.

Figure 5 is a perspective view illustrating a cooling device according to one embodiment of the present invention.

Figure 6 is an exploded perspective view showing the configuration of the cooling device of Figure 5.

Figure 7 is a partially open perspective view showing the cooling device of Figure 5.

Fig. 8 is a B-B cross-sectional view illustrating the cooling device of Fig. 5.

Figure 9 is a front view showing the cooling device of Figure 5.

Figure 10 is a partially open rear view showing the cooling device of Figure 5.

Fig. 11 is a perspective view showing a euro forming member provided in the cooling device of Fig. 5.

Fig. 12 is a front view showing the euro forming member of Fig. 11.

Figure 13 is a partially open rear view showing the cooling device of Figure 5.

Fig. 14 is a D-D cross-sectional view illustrating the cooling device of Fig. 5.

Fig. 15 is a B-B cross-sectional view (a) and a C-C cross-sectional view (b) showing the flow of cooling fluid formed inside the cooling device of Fig. 5.

Fig. 16 is a D-D cross-sectional view showing the flow of cooling fluid formed inside the cooling device of Fig. 5.

FIG. 17 is a perspective view illustrating a cooling device according to another embodiment of the present invention.

Fig. 18 is an exploded perspective view showing the configuration of the cooling device of Fig. 17.

Fig. 19 is a front view showing the cooling device of Fig. 17.

Figure 20 is a partially open rear view showing the cooling device of Figure 17.

Fig. 21 is an E-E cross-sectional view illustrating the cooling device of Fig. 17.

Fig. 22 is a perspective view illustrating the operation of the cooling device of Fig. 17.

Figure 23 is a block diagram showing the configuration of a circuit breaker according to an embodiment of the present invention.

Fig. 24 is a front view showing a circuit breaker having the cooling device of Fig. 5.

Fig. 25 is a front view showing a circuit breaker having the cooling device of Fig. 17.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and the same reference numerals designate identical or similar components throughout the specification.

The words and terms used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best explain his or her invention.

Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modified examples that can replace the configuration at the time of filing of the present invention.

In the following description, descriptions of some components may be omitted to clarify the features of the present invention.

The term "fluid communication" as used herein refers to one or more elements being fluidly connected to one another. In one embodiment, the fluid communication may be formed by elements such as conduits, pipes, or piping. In the following description, the fluid communication may be used in the same sense as one or more elements being "fluidly connected" to one another.

The term "conduction" as used herein refers to the connection of one or more elements to enable the transmission of current or electrical signals. In one embodiment, the conduction may be formed in a wired form, such as by a conductor element, or in a wireless form, such as Bluetooth, Wi-Fi, or RFID. In one embodiment, the conduction may also include the meaning of "communication."

The term "fluid" used in the following description refers to any form of material that can flow and change shape or volume, etc., due to an external force. In one embodiment, the fluid may be a liquid such as water or a gas such as air.

The terms “upper side,” “lower side,” “left side,” “right side,” “front side,” and “rear side” used in the following description shall be understood with reference to the coordinate system depicted throughout the attached drawings.

Referring to FIGS. 1 and 2, a circuit breaker (10) according to an embodiment of the present invention is illustrated. The circuit breaker (10) according to an embodiment of the present invention is electrically connected to an external power source and a load. The circuit breaker (10) can allow or block electrical current between the external power source and the load.

To this end, the circuit breaker (10) may include a fixed contact (not shown) and a movable contact (not shown) that are constantly electrically connected to the outside. When the fixed contact (not shown) and the movable contact (not shown) are electrically connected, an external power source and load can be electrically connected. When the movable contact (not shown) moves and is electrically disconnected from the fixed contact (not shown), the electrical supply to the external power source and load can be cut off.

At this time, the circuit breaker (10) can be electrically connected to an external power source or load by a specific configuration (i.e., a terminal (200) to be described later). As the operation of the circuit breaker (10) continues, a large amount of heat may be generated in the configuration.

If the generated heat is not sufficiently cooled, there is a risk that the above configuration or other configurations of the circuit breaker (10) may be thermally damaged. In this case, there is a risk that the circuit breaker (10) may malfunction, thereby reducing the reliability of performing its original role, i.e., allowing or blocking the flow of external power and load.

Accordingly, by providing a cooling device (300) adjacent to the above-described configuration according to an embodiment of the present invention, the generated heat can be quickly and effectively cooled. Accordingly, the above-described configuration can be quickly cooled, preventing thermal damage. Consequently, damage to the circuit breaker (10) can be prevented, and operational reliability can be improved.

At this time, the cooling device (300) is located outside the circuit breaker (10). Therefore, even when the cooling device (300) is provided, no design or layout change of other components of the circuit breaker (10) is required.

In addition, the circuit breaker (10) according to an embodiment of the present invention may include the above configuration, i.e., a plurality of terminals (200). In this case, the plurality of terminals (200) may be independently cooled by a cooling device (300).

Furthermore, the circuit breaker (10) according to an embodiment of the present invention can have multiple cooling devices (300) actively operated depending on the status of multiple terminals (200). Therefore, the cooling devices (300) can be operated only in situations where cooling of the terminals (200) is required, thereby improving energy efficiency.

In the embodiment illustrated in FIGS. 1 and 2, the circuit breaker (10) includes a circuit breaker body (100), a terminal (200), and a cooling device (300). In addition, referring further to FIG. 23, the circuit breaker (10) according to the embodiment of the present invention further includes a control unit (400) and a compressor (Comp). At this time, the compressor (Comp) may be provided together with the circuit breaker (10) or may be provided separately and fluidly connected to the cooling device (300).

The circuit breaker body (100) constitutes the outer appearance of the circuit breaker (10). The circuit breaker body (100) is coupled with other components of the circuit breaker (10), in the illustrated embodiment, a terminal (200) and a cooling device (300). The circuit breaker body (100) supports the terminal (200) and the cooling device (300).

The circuit breaker body (100) can accommodate different configurations of the circuit breaker (10). For example, the circuit breaker body (100) can accommodate the fixed contacts (not shown) and movable contacts (not shown) described above. Therefore, the circuit breaker body (100) can be said to function as a housing for the circuit breaker (10).

Although not shown, the circuit breaker body (100) can be accommodated in an external cradle (not shown) in a retractable manner. The circuit breaker body (100) can be connected to an external power source and load in a current-carrying manner while accommodated in the cradle (not shown).

The circuit breaker body (100) is coupled with a terminal (200). The circuit breaker body (100) is coupled with the terminal (200) on one side in the longitudinal direction, the front side in the illustrated embodiment. The circuit breaker body (100) can support the terminal (200) so that it is at least partially exposed to the outside.

The circuit breaker body (100) is coupled with a cooling device (300). The circuit breaker body (100) is coupled with the cooling device (300) on one side in the longitudinal direction, the front side in the illustrated embodiment. At this time, the cooling device (300) may be coupled to the outer side of the circuit breaker body (100).

The circuit breaker body (100) can be coupled to and accommodate the control unit (400). In another embodiment, the circuit breaker body (100) can be electrically connected to the control unit (400) that is placed externally.

In the embodiment shown in FIGS. 3 and 4, the circuit breaker body (100) includes a main frame (110), an arc extinguishing member (120), and a temperature sensor (130).

The main frame (110) constitutes the outer shape of the circuit breaker body (100). A space is formed inside the main frame (110) to accommodate other components provided in the circuit breaker (10).

An arc extinguishing member (120) is coupled to the main frame (110). In the illustrated embodiment, it is coupled to the upper side of the main frame (110) in the height direction. The main frame (110) supports the arc extinguishing member (120) so that the arc extinguishing member (120) is at least partially exposed to the outside.

The main frame (110) is coupled to the terminal (200). The main frame (110) can support the terminal (200) such that at least a portion thereof is accommodated therein, and the other portion thereof is exposed to the outside of the main frame (110).

The main frame (110) is coupled to a cooling device (300). The main frame (110) can support the cooling device (300) so that the cooling device (300) is exposed to the outside and positioned adjacent to the terminal (200).

The main frame (110) constitutes the outer shape of the circuit breaker body (100) and may have any shape that can be combined with other components to support them. In the illustrated embodiment, the main frame (110) has a polygonal column shape having a length in the front-back direction, a width in the left-right direction, and a height in the up-down direction.

The arc extinguishing member (120) is configured to extinguish an arc formed by a fixed contact (not shown) and a movable contact (not shown) housed inside the main frame (110) being spaced apart from each other.

The arc extinguishing member (120) is positioned adjacent to the fixed contact (not shown) and the movable contact (not shown) to form a path for extinguishing and discharging the generated arc. In the illustrated embodiment, the arc extinguishing member (120) is positioned on one side of the main frame (110) in the longitudinal direction, i.e., on the upper side of the front.

A plurality of arc extinguishing members (120) may be provided. A plurality of arc extinguishing members (120) may be arranged adjacent to a plurality of fixed contacts (not shown) or a plurality of movable contacts (not shown), respectively, to form a path for extinguishing and discharging the generated arc.

In the illustrated embodiment, four arc extinguishing members (120) are provided, including a first arc extinguishing member (121), a second arc extinguishing member (122), a third arc extinguishing member (123), and a fourth arc extinguishing member (124). The first to fourth arc extinguishing members (121, 122, 123, 124) are arranged in parallel along the width direction of the main frame (110), i.e., the left-right direction in the illustrated embodiment.

At this time, the first to fourth arc extinguishing members (121, 122, 123, 124) may be positioned on the upper side of the plurality of terminals (200). That is, in the illustrated embodiment, the first to fourth arc extinguishing members (121, 122, 123, 124) are positioned on the upper side of the first to fourth terminals (200a, 200b, 200c, 200d), respectively. This is because, as will be described later, the first to fourth terminals (200a, 200b, 200c, 200d) are energized and connected to a plurality of fixed contacts (not shown) and movable contacts (not shown), respectively.

That is, the number and arrangement of the arc-protection member (120) can be changed corresponding to the number and arrangement of the terminal (200).

The temperature sensor (130) is positioned adjacent to the terminal (200) and is configured to detect heat generated at the terminal (200). In other words, the temperature sensor (130) is configured to detect the temperature at a location adjacent to the terminal (200).

The temperature sensor (130) is positioned adjacent to the terminal (200). In the illustrated embodiment, the temperature sensor (130) is positioned on the upper right side of the terminal (200) on the longitudinal side of the main frame (110), i.e., the front side. When the cooling device (300) is coupled with the circuit breaker body (100), the temperature sensor (130) is covered by the cooling device (300) and is not exposed to the outside.

Accordingly, the temperature sensor (130) can detect heat generated in the terminal (200) with minimal external influence. Consequently, the accuracy of information about the temperature of the terminal (200) detected by the temperature sensor (130) can be improved.

The temperature sensor (130) is electrically connected to the control unit (400). Information detected by the temperature sensor (130) is transmitted to the control unit (400). As will be described later, the control unit (400) can calculate control information for controlling the compressor (Comp) in accordance with the detected information.

The temperature sensor (130) may be provided in any form capable of detecting heat generated from the terminal (200). In one embodiment, the temperature sensor (130) may be provided as a non-contact sensor, such as a laser sensor. In another embodiment, the temperature sensor (130) may be configured to detect temperature by directly contacting the terminal (200).

A plurality of temperature sensors (130) may be provided. The plurality of temperature sensors (130) may be respectively arranged adjacent to the plurality of terminals (200) and may be respectively covered by the plurality of cooling devices (300). In the illustrated embodiment, the temperature sensors (130) include a first temperature sensor (131), a second temperature sensor (132), a third temperature sensor (133), and a fourth temperature sensor (134).

The first to fourth temperature sensors (131, 132, 133, 134) are spaced apart from each other in the width direction of the main frame (110), and in the left and right direction in the illustrated embodiment. The first to fourth temperature sensors (131, 132, 133, 134) are positioned adjacent to the first to fourth terminals (200a, 200b, 200c, 200d), respectively. The first to fourth temperature sensors (131, 132, 133, 134) may be covered by the first to fourth cooling devices (300a, 300b, 300c, 300d), respectively.

The terminal (200) is a configuration in which the circuit breaker (10) is electrically connected to an external power source and a load. One part of the terminal (200) can be electrically connected to an external power source, and the other part of the terminal (200) can be electrically connected to a load. The one part of the terminal (200) is electrically connected to one of a fixed contact (not shown) and a movable contact (not shown). The other part of the terminal (200) is electrically connected to the other of the fixed contact (not shown) and the movable contact (not shown).

Therefore, when a fixed contact (not shown) and a movable contact (not shown) are brought into contact with each other so as to be electrically conductive, the one part and the other part of the terminal (200) can be electrically conductive with each other. Consequently, an external power source and a load can be electrically connected to each other.

The terminal (200) is coupled to the circuit breaker body (100). Specifically, the terminal (200) is coupled to the main frame (110), but may be at least partially exposed to the outside. In the illustrated embodiment, the terminal (200) is located on one side of the main frame (110) in the longitudinal direction, i.e., the front side.

As the terminal (200) is electrically connected to an external power source (not shown) or load (not shown), a large amount of heat is generated in the terminal (200). If the heat is left unattended, other components of the terminal (200) and the circuit breaker (10) may be damaged by the heat, which may lower the operational reliability of the circuit breaker (10).

Accordingly, the circuit breaker (10) according to an embodiment of the present invention includes an additional component, i.e., a cooling device (300), for effectively cooling the heat generated at the terminal (200). The cooling device (300) is configured to receive the heat generated at the terminal (200) and discharge it to the outside. Accordingly, the terminal (200) is effectively cooled, and the operational reliability of the circuit breaker (10) can be improved.

As described above, a temperature sensor (130) may be placed adjacent to the terminal (200). The operation of the cooling device (300) may be controlled based on information about the temperature detected by the temperature sensor (130). Accordingly, the operating efficiency of the cooling device (300) may be improved.

The terminal (200) may be formed of a material having high electrical conductivity and rigidity. In one embodiment, the terminal (200) may be formed of copper (Cu) or an alloy material containing copper (Cu).

A plurality of terminals (200) may be provided. The plurality of terminals (200) may be electrically connected to an external power source and load, as well as a fixed contact (not shown) and a movable contact (not shown). The plurality of terminals (200) may be spaced apart from each other along the width or height direction of the main frame (110).

In the illustrated embodiment, four terminals (200) are provided, including a first terminal (200a), a second terminal (200b), a third terminal (200c), and a fourth terminal (200d). The first to fourth terminals (200a, 200b, 200c, 200d) are provided as a pair and are spaced apart from each other in the height direction of the main frame (110), i.e., in the vertical direction in the illustrated embodiment. The first to fourth terminals (200a, 200b, 200c, 200d) are spaced apart from each other in the width direction of the main frame (110), i.e., in the left-right direction in the illustrated embodiment.

At this time, first to fourth arc extinguishing members (121, 122, 123, 124) may be arranged on the upper sides of the first to fourth terminals (200a, 200b, 200c, 200d). In addition, first to fourth cooling devices (300a, 300b, 300c, 300d), which will be described later, may be arranged on each of the first to fourth terminals (200a, 200b, 200c, 200d).

Accordingly, the first to fourth terminals (200a, 200b, 200c, 200d) can be independently cooled by the first to fourth cooling devices (300a, 300b, 300c, 300d). Accordingly, the first to fourth terminals (200a, 200b, 200c, 200d) that emit different amounts of heat can be effectively cooled.

Furthermore, first to fourth temperature sensors (131, 132, 133, 134) are respectively arranged at positions adjacent to the first to fourth terminals (200a, 200b, 200c, 200d), i.e., on the upper right side in the illustrated embodiment. The temperatures of the first to fourth terminals (200a, 200b, 200c, 200d) can be respectively detected by the first to fourth temperature sensors (131, 132, 133, 134).

Terminals 1 to 4 (200a, 200b, 200c, 200d) differ in their placement, but their structures and functions are identical. Accordingly, in the following description, common parts of terminals 1 to 4 (200a, 200b, 200c, 200d) are collectively referred to as terminals (200).

In the embodiments illustrated in FIGS. 3 and 4, the terminal (200) includes a terminal body (210) and a terminal opening (220).

The terminal body (210) constitutes a portion of the outer shape of the terminal (200). The terminal body (210) is a portion where the terminal (200) is exposed to the outside of the circuit breaker body (100). The terminal body (210) is electrically connected to an external power source or load.

The terminal body (210) may have any shape that can be electrically connected to an external power source or load. In the illustrated embodiment, the terminal body (210) has a rectangular cross-section and a vertical height, and is a polygonal columnar shape with a terminal opening (220) formed therein.

At this time, the height of the terminal body (210) may be defined as a first height (H1). In addition, the width of the terminal body (210) may be defined as a first width (W1). The first height (H1) may be formed to be less than or equal to a second height (H2), which is the height of the coupling through-hole (350) of the cooling device (300) to be described later. In addition, the first width (W1) may be formed to be less than or equal to a second width (W2), which is the width of the coupling through-hole (350) of the cooling device (300).

Accordingly, the terminal body (210) can be penetrated or accommodated in the coupling through hole (350) of the cooling device (300). A detailed description thereof will be provided later.

In the illustrated embodiment, the terminal body (210) includes a first terminal extension (211), a second terminal extension (212), and a third terminal extension (213).

The first terminal extension (211) constitutes a portion of the terminal body (210). The first terminal extension (211) is a portion of the terminal body (210) that protrudes outward. In the illustrated embodiment, the first terminal extension (211) is located on the left side of the terminal body (210) and protrudes in the longitudinal direction of the main frame (110), i.e., toward the front. The first terminal extension (211) extends in the height direction of the main frame (110), i.e., in the vertical direction in the illustrated embodiment.

The second terminal extension (212) constitutes another part of the terminal body (210). The second terminal extension (212) is the part where the terminal body (210) is coupled to the circuit breaker body (100). In the illustrated embodiment, the second terminal extension (212) constitutes one longitudinal side of the terminal body (210), i.e., the rear side. The second terminal extension (212) extends in the width direction of the main frame (110), i.e., in the left-right direction in the illustrated embodiment.

The second terminal extension (212) is continuous with the first terminal extension (211) and the third terminal extension (213), respectively. In the illustrated embodiment, one longitudinal side of the second terminal extension (212), the left end in the illustrated embodiment, is continuous with the first terminal extension (211). The other longitudinal side of the second terminal extension (212), the right end in the illustrated embodiment, is continuous with the third terminal extension (213).

At this time, the second terminal extension (212) may be continuous with the first terminal extension (211) and the third terminal extension (213) at a predetermined angle. In one embodiment, the predetermined angle may be a right angle.

The third terminal extension (213) constitutes the remaining portion of the terminal body (210). The third terminal extension (213) is another portion of the terminal body (210) that protrudes outward. In the illustrated embodiment, the third terminal extension (213) is located on the right side of the terminal body (210) and protrudes in the longitudinal direction of the main frame (110), i.e., toward the front. The third terminal extension (213) extends in the height direction of the main frame (110), i.e., in the vertical direction.

The first terminal extension (211) and the third terminal extension (213) are arranged facing each other with the terminal opening (220) between them.

The terminal opening (220) is a space that accommodates any configuration that can electrically connect the terminal (200) to an external power source or load, such as a connector member. The terminal opening (220) can accommodate any configuration in a withdrawable manner.

A terminal opening (220) is defined by being surrounded by a terminal body (210). In the illustrated embodiment, each widthwise side of the terminal opening (220) is surrounded by a first terminal extension (211) and a third terminal extension (213), respectively. One longitudinal side of the terminal opening (220), the rear side in the illustrated embodiment, is surrounded by a second terminal extension (212). The other longitudinal side of the terminal opening (220), the front side in the illustrated embodiment, is formed open to form a passage through which any of the above-described configurations are introduced and withdrawn.

The terminal opening (220) may have a shape corresponding to the shape of the terminal body (210). In the illustrated embodiment, the terminal opening (220) is formed as a polygonal prism-shaped space having a rectangular cross-section and a vertical height.

Referring again to FIGS. 1 and 2, a circuit breaker (10) according to an embodiment of the present invention includes a cooling device (300).

The cooling device (300) is positioned adjacent to the terminal (200) and configured to receive heat generated from the terminal (200). The cooling device (300) can discharge the received heat to the outside of the circuit breaker (10). Accordingly, the terminal (200) can be cooled and overheating can be prevented.

The cooling device (300) is coupled to the circuit breaker body (100). At this time, the cooling device (300) may be positioned adjacent to the terminal (200) coupled to the circuit breaker body (100). In the illustrated embodiment, the cooling device (300) is positioned adjacent to the terminal (200) on one longitudinal side of the main frame (110), i.e., on the lower front side. The cooling device (300) may cover the temperature sensor (130) and be coupled to the circuit breaker body (100).

The cooling device (300) is positioned adjacent to the terminal (200). The cooling device (300) may be coupled to the terminal (200). In this case, the cooling device (300) may be coupled to the terminal (200) by at least partially surrounding the terminal (200). In one embodiment, the cooling device (300) may be coupled to the terminal (200) by surrounding the terminal (200) in the height direction and the width direction.

As described above, the terminals (200) may be provided in pairs and spaced apart in the height direction, i.e., in the vertical direction. In this case, the cooling device (300) may be coupled with the terminal (200) located at the lower side. Considering that heat moves from the lower side to the upper side, by coupling the cooling device (300) with the terminal (200) located at the lower side, the amount of heat transferred to the terminal (200) located at the upper side can be minimized.

The cooling device (300) may be formed of a material having high thermal conductivity. In one embodiment, the cooling device (300) may be formed of aluminum (Al), copper, or an alloy material including these.

A space in which a cooling fluid flows (i.e., a cooling fluid flow space (330) to be described later) may be formed inside the cooling device (300). The space may be fluidly connected to an external cooling fluid supply source (not shown).

Cooling fluid supplied from an external cooling fluid supply source (not shown) may be introduced into the cooling device (300). The cooling fluid flows through the space of the cooling device (300) and receives heat generated at the terminal (200). The cooling fluid that has received the heat may be discharged to the outside of the cooling device (300).

Additionally, as will be described later, cooling fluid provided from an external cooling fluid supply source (not shown) may be sprayed toward the terminal (200) through the discharge opening (360). In the above embodiment, the terminal (200) may be directly cooled by the cooling fluid, thereby improving cooling efficiency.

In one embodiment, the cooling fluid may be comprised of air. In this embodiment, an external cooling fluid supply source (not shown) may be provided as a compressor (Comp). In this embodiment, the cooling device (300) may be fluidly connected to the compressor (Comp) to receive the air. For this purpose, the cooling device (300) may be fluidly connected to the compressor (Comp) via a hose or pipe.

A plurality of cooling devices (300) may be provided. The plurality of cooling devices (300) may be positioned adjacent to the plurality of terminals (200), respectively, and configured to cool the plurality of terminals (200).

In the illustrated embodiment, the cooling device (300) includes a first cooling device (300a), a second cooling device (300b), a third cooling device (300c), and a fourth cooling device (300d). The first to fourth cooling devices (300a, 300b, 300c, 300d) may be spaced apart from each other so as to be parallel in the arrangement direction of the first to fourth terminals (200a, 200b, 200c, 200d), i.e., in the left-right direction in the illustrated embodiment.

The first to fourth cooling devices (300a, 300b, 300c, 300d) can cool the first to fourth terminals (200a, 200b, 200c, 200d), respectively. At this time, the flow of cooling fluid flowing in each of the first to fourth cooling devices (300a, 300b, 300c, 300d) can be independently controlled.

As a result, it will be understood that the first to fourth terminals (200a, 200b, 200c, 200d) can be cooled independently of each other.

The first to fourth cooling devices (300a, 300b, 300c, 300d) differ in their placement locations, but their structures and functions are identical. Accordingly, in the following description, the first to fourth cooling devices (300a, 300b, 300c, 300d) will be collectively referred to as the cooling device (300) for common elements.

Referring to FIGS. 5 to 16, a cooling device (300) according to one embodiment of the present invention is illustrated. In the illustrated embodiment, the cooling device (300) includes a first cooling frame (310), a second cooling frame (320), a cooling fluid flow space (330), a communication member (340), a coupling through hole (350), a discharge opening (360), and a flow path forming member (700).

The first cooling frame (310) constitutes a portion of the outer shape of the cooling device (300). In the illustrated embodiment, the first cooling frame (310) constitutes a portion of the front side of the cooling device (300). The first cooling frame (310) partially surrounds the terminal body (210). In the illustrated embodiment, the first cooling frame (310) surrounds each side in the width direction and each side in the height direction of the terminal body (210), i.e., the left side, the right side, the upper side, and the lower side.

The first cooling frame (310) is coupled to the second cooling frame (320). In the illustrated embodiment, one side in the thickness direction of the first cooling frame (310), i.e., the rear side, is coupled to the second cooling frame (320).

A cooling fluid flow space (330) is partially formed inside the first cooling frame (310). Specifically, a first cooling fluid flow space (331) is formed inside the first cooling frame (310). When the first cooling frame (310) is coupled to the second cooling frame (320), the first cooling fluid flow space (331) can be communicated with the second cooling fluid flow space (332) formed inside the second cooling frame (320).

The first cooling frame (310) is coupled to a communication member (340). A first cooling fluid flow space (331) formed inside the first cooling frame (310) can be fluidly connected to an external cooling fluid supply source (not shown) by the communication member (340). Cooling fluid can be supplied to the first cooling frame (310) through the communication member (340).

A first cooling frame (310) is partially formed with a coupling through hole (350). Inside the first cooling frame (310), a first coupling through hole (351) is formed penetrating in the thickness direction, in the front-back direction in the illustrated embodiment.

A discharge opening (360) is formed in the first cooling frame (310). The discharge opening (360) connects the exterior of the cooling device (300) and the interior of the first cooling frame (310). Cooling fluid that has received heat from the terminal (200) can be discharged to the exterior of the first cooling frame (310) through the discharge opening (360).

The first cooling frame (310) is coupled to a flow path forming member (370). The first cooling frame (310) surrounds the flow path forming member (370) accommodated in the first cooling fluid flow space (331).

The first cooling frame (310) is coupled with the second cooling frame (320) and may have any shape that can surround the first cooling fluid flow space (331). In the illustrated embodiment, the first cooling frame (310) has a rectangular cross-section and a height in the front-rear direction, and is a three-dimensional shape having a first coupling through hole (351) formed therein. The first cooling frame (310) may have a shape corresponding to the shape of the second cooling frame (320).

In the illustrated embodiment, the first cooling frame (310) includes a first cooling frame outer surface (311), a first cooling frame outer periphery (312), a first cooling frame inner periphery (313), and a joining opening (314).

The first cooling frame outer surface (311) constitutes a portion of the outer shape of the first cooling frame (310). In the illustrated embodiment, the first cooling frame outer surface (311) constitutes one longitudinal side of the first cooling frame (310), i.e., the front side.

The first cooling frame outer surface (311) partially surrounds the first cooling fluid flow space (331) formed therein. In the illustrated embodiment, the first cooling frame outer surface (311) surrounds the first cooling fluid flow space (331) on the front side. The first cooling frame outer surface (311) surrounds the flow path forming member (370) accommodated in the first cooling fluid flow space (331) on the front side.

A coupling opening (314) is formed through one side in the height direction of the outer surface (311) of the first cooling frame, in the illustrated embodiment, on the upper side. A first coupling through hole (351) is formed through the inside of the outer surface (311) of the first cooling frame.

A portion that is continuous with the outer edge of the first cooling frame outer surface (311) is defined as the first cooling frame outer periphery (312). Another portion that is continuous with the inner edge of the first cooling frame outer surface (311) is defined as the first cooling frame inner periphery (313).

The first cooling frame outer periphery (312) is continuous with the outer edge of the first cooling frame outer surface (311). The first cooling frame outer periphery (312) is continuous with the outer edges of the first cooling frame outer surface (311) in the width direction and height direction, i.e., the left, right, upper, and lower outer edges in the illustrated embodiment, respectively.

The first cooling frame outer periphery (312) surrounds the first cooling fluid flow space (331) from the outside. In the illustrated embodiment, the first cooling frame outer periphery (312) surrounds the first cooling fluid flow space (331) from the left, right, upper, and lower sides.

The first cooling frame outer periphery (312) may have a shape corresponding to the shape of the first cooling frame outer surface (311). In addition, the first cooling frame outer periphery (312) may have a shape corresponding to the shape of the second cooling frame outer periphery (322). In the illustrated embodiment, the first cooling frame outer periphery (312) has a height in the front-back direction, and is formed by a plurality of plate-shaped members extending left-right or up-down in a continuous manner.

A first cooling frame inner periphery (313) is positioned on the inner side in the width and height directions of the first cooling frame outer periphery (312).

The inner circumference (313) of the first cooling frame is continuous with the inner edge of the outer surface (311) of the first cooling frame. The inner circumference (313) of the first cooling frame is continuous with the inner edges of the outer surface (311) of the first cooling frame in the width direction and height direction, i.e., the inner edges of the left, right, upper, and lower sides in the illustrated embodiment.

The first cooling frame inner circumference (313) surrounds the first cooling fluid flow space (331) from the inside. In the illustrated embodiment, the first cooling frame inner circumference (313) surrounds the first cooling fluid flow space (331) from the left, right, upper, and lower sides.

The first cooling frame inner circumference (313) surrounds the first coupling through-hole (351) from the outside. In the illustrated embodiment, the first cooling frame inner circumference (313) surrounds the first coupling through-hole (351) from the left, right, upper, and lower sides. The first cooling frame inner circumference (313) can surround the terminal (200) accommodated in the first coupling through-hole (351) in the width direction and the height direction.

Accordingly, the cooling fluid provided to the cooling device (300) is discharged toward the terminal (200) through the discharge opening (360) and can cool the terminal (200).

A discharge opening (360) is formed through the inner circumference (313) of the first cooling frame. The discharge opening (360) communicates the first cooling fluid flow space (331), the inner side of which is surrounded by the inner circumference (313) of the first cooling frame, with the outside.

The first cooling frame inner circumference (313) may have a shape corresponding to the shape of the first coupling through hole (351) or the terminal (200). In addition, the first cooling frame inner circumference (313) may have a shape corresponding to the shape of the second cooling frame inner circumference (323). In the illustrated embodiment, the first cooling frame inner circumference (313) has a height in the front-back direction, and is formed by a plurality of plate-shaped members extending left-right or up-down in a continuous manner.

The coupling opening (314) is a portion where the first cooling frame (310) is coupled to the communication member (340). The coupling opening (314) is formed to penetrate in the thickness direction of the outer surface (311) of the first cooling frame, i.e., in the front-back direction in the illustrated embodiment. The communication member (340) can be coupled to the coupling opening (314) by penetrating therethrough. Accordingly, the communication member (340) can be in communication with the first cooling fluid flow space (331).

The coupling opening (314) can be formed at any position where the communication member (340) can be coupled. In the illustrated embodiment, the coupling opening (314) is located on one side, i.e., the upper side, in the height direction of the outer surface (311) of the first cooling frame.

As the coupling opening (314) is located on the upper side of the first cooling frame outer surface (311), the cooling fluid can effectively flow in the cooling fluid flow space (330). That is, the cooling fluid provided from an external cooling fluid supply source (not shown) will be relatively low temperature.

Accordingly, the cooling fluid flowing upward can flow downward due to the density difference and self-weight and receive heat generated at the terminal (200). In addition, the cooling fluid flowing downward and receiving heat will have a relatively high temperature. Therefore, the cooling fluid receiving heat can flow upward due to the density difference and be discharged through the discharge opening (360).

The coupling opening (314) may have a shape corresponding to the shape of the flue member (340). In the illustrated embodiment, the coupling opening (314) is formed as a space in the shape of a disk having a circular cross-section and a thickness in the front-back direction.

A plurality of coupling openings (314) may be provided. The plurality of coupling openings (314) may be respectively coupled with a plurality of communication members (340). In the illustrated embodiment, the coupling opening (314) includes a first coupling opening (314a) and a second coupling opening (314b). The first coupling opening (314a) and the second coupling opening (314b) are spaced apart from each other in the width direction of the first cooling frame outer surface (311), i.e., in the left-right direction.

A communication member (340) is penetratedly connected to one of the first coupling opening (314a) and the second coupling opening (314b). The other of the first coupling opening (314a) and the second coupling opening (314b) is closed, so that any leakage of the introduced cooling fluid can be prevented.

The second cooling frame (320) constitutes another portion of the exterior of the cooling device (300). In the illustrated embodiment, the second cooling frame (320) constitutes a rear portion of the cooling device (300). The second cooling frame (320) partially surrounds the terminal body (210). In the illustrated embodiment, the second cooling frame (320) surrounds each side in the width direction and each side in the height direction of the terminal body (210), i.e., the left side, the right side, the upper side, and the lower side.

The second cooling frame (320) is coupled with the first cooling frame (310). In the illustrated embodiment, one side of the second cooling frame (320) in the thickness direction, i.e., the front side, is coupled with the first cooling frame (310).

A cooling fluid flow space (330) is partially formed inside the second cooling frame (320). In the illustrated embodiment, a second cooling fluid flow space (332) is formed inside the second cooling frame (320). When the second cooling frame (320) is coupled to the first cooling frame (310), the second cooling fluid flow space (332) can be communicated with the first cooling fluid flow space (331).

A joining through hole (350) is partially formed in the second cooling frame (320). A second joining through hole (352) is formed in the interior of the second cooling frame (320) in the thickness direction, i.e., in the front-back direction in the illustrated embodiment.

The second cooling frame (320) is coupled with the first cooling frame (310) and may have any shape that can surround the second cooling fluid flow space (332). In the illustrated embodiment, the second cooling frame (320) has a rectangular cross-section and a thickness in the front-rear direction, and is a three-dimensional shape having a second coupling through hole (352) formed therein. The second cooling frame (320) may have a shape corresponding to the shape of the first cooling frame (310).

In the illustrated embodiment, the second cooling frame (320) includes a second cooling frame outer surface (321), a second cooling frame outer periphery (322), and a second cooling frame inner periphery (323).

The second cooling frame outer surface (321) constitutes a portion of the outer shape of the second cooling frame (320). In the illustrated embodiment, the second cooling frame outer surface (321) constitutes one longitudinal side of the second cooling frame (320), i.e., the front side.

The second cooling frame outer surface (321) partially surrounds the second cooling fluid flow space (332) formed therein. In the illustrated embodiment, the second cooling frame outer surface (321) surrounds the second cooling fluid flow space (332) from the rear side. In addition, the second cooling frame outer surface (321) surrounds the flow path forming member (3770) accommodated in the first cooling fluid flow space (331) from the rear side.

A portion that is continuous with the outer edge of the second cooling frame outer surface (321) is defined as the second cooling frame outer periphery (322). A portion that is continuous with the inner edge of the second cooling frame outer surface (321) is defined as the second cooling frame inner periphery (323).

The second cooling frame outer periphery (322) is continuous with the outer edge of the second cooling frame outer surface (321). The second cooling frame outer periphery (322) is continuous with the outer edges of the second cooling frame outer surface (321) in the width direction and height direction, i.e., the left, right, upper, and lower outer edges in the illustrated embodiment.

The second cooling frame outer periphery (322) surrounds the second cooling fluid flow space (332) from the outside. In the illustrated embodiment, the second cooling frame outer periphery (322) surrounds the second cooling fluid flow space (332) from the left, right, upper, and lower sides.

The second cooling frame outer periphery (322) may have a shape corresponding to the shape of the second cooling frame outer surface (321). In addition, the second cooling frame outer periphery (322) may have a shape corresponding to the shape of the first cooling frame outer periphery (312). In the illustrated embodiment, the second cooling frame outer periphery (322) has a height in the front-back direction, and a plurality of rib members extending left-right or up-down are formed continuously with each other.

A second cooling frame inner periphery (323) is positioned on the inner side in the width and height directions of the second cooling frame outer periphery (322).

The inner circumference of the second cooling frame (323) is continuous with the inner edge of the outer surface of the second cooling frame (321). The inner circumference of the second cooling frame (323) is defined by the inner edge of the outer surface of the second cooling frame (321) in the width direction and height direction, i.e., the inner edge of the left, right, upper, and lower sides in the illustrated embodiment.

The second cooling frame inner circumference (323) surrounds the second cooling fluid flow space (332) from the inside. In the illustrated embodiment, the second cooling frame inner circumference (323) surrounds the second cooling fluid flow space (332) from the left, right, upper, and lower sides.

The inner circumference of the second cooling frame (323) surrounds the second coupling through-hole (352) from the outside. In the illustrated embodiment, the inner circumference of the second cooling frame (323) surrounds the second coupling through-hole (352) from the left, right, upper, and lower sides. The inner circumference of the second cooling frame (323) can surround the terminal (200) accommodated in the second coupling through-hole (352) in the width direction and the height direction.

Accordingly, it will be understood that the heat generated at the terminal (200) can be transferred to the cooling fluid flowing in the cooling fluid flow space (330) through the inner circumference of the second cooling frame (323).

The inner circumference of the second cooling frame (323) may have a shape corresponding to the shape of the second coupling through-hole (352) or the terminal (200). In addition, the inner circumference of the second cooling frame (323) may have a shape corresponding to the shape of the inner circumference of the first cooling frame (313). In the illustrated embodiment, the inner circumference of the second cooling frame (323) has a height in the front-back direction, and is formed by a plurality of plate-shaped members extending left-right or up-down in a continuous manner.

The cooling fluid flow space (330) is a space in which cooling fluid delivered from an external cooling fluid supply source (not shown) flows. The cooling fluid flows in the cooling fluid flow space (330) and can receive heat generated in the terminal (200). The cooling fluid that has received the heat can be discharged to the outside of the cooling fluid flow space (330). Accordingly, the terminal (200) can be cooled.

In addition, the cooling fluid flow space (330) constitutes a space in which the cooling fluid provided to the cooling device (300) flows to be sprayed toward the terminal (200). The cooling fluid introduced into the cooling fluid flow space (330) receives some of the heat from the terminal (200) and is discharged through the discharge opening (360) to cool the terminal (200).

A cooling fluid flow space (330) is formed inside the first and second cooling frames (310, 320). The cooling fluid flow space (330) is surrounded and defined by the first and second cooling frames (310, 320).

The cooling fluid flow space (330) is communicated with the outside through a communication member (340). Specifically, the cooling fluid flow space (330) can be communicated with the outside by a communication member (340) that is penetratingly connected to a coupling opening (314) that communicates the cooling fluid flow space (330) with the outside.

The cooling fluid flow space (330) is connected to the outside through the discharge opening (360). The cooling fluid that has received heat from the terminal (200) can flow out to the outside through the discharge opening (360). In an embodiment in which the discharge opening (360) is arranged to face the terminal (200), the cooling fluid discharged through the discharge opening (360) can cool the terminal (200).

A flow path forming member (370) is positioned in the cooling fluid flow space (330). The cooling fluid flowing in the cooling fluid flow space (330) does not flow out immediately after being introduced by the flow path forming member (370), but flows for a sufficient period of time and can receive heat from the terminal (200).

The cooling fluid flow space (330) may have a shape corresponding to the shape of the first and second cooling frames (310, 320) and the coupling through hole (350). In the illustrated embodiment, the cooling fluid flow space (330) is formed as a three-dimensional space having a rectangular cross-section and a length in the front-back direction, and having a coupling through hole (350) physically partitioned therein.

The cooling fluid flow space (330) may be divided into a plurality of parts. One part constituting the cooling fluid flow space (330) may be formed inside the first cooling frame (310). Another part constituting the cooling fluid flow space (330) may be formed inside the second cooling frame (320).

In the illustrated embodiment, the cooling fluid flow space (330) includes a first cooling fluid flow space (331) and a second cooling fluid flow space (332).

The first cooling fluid flow space (331) is formed inside the first cooling frame (310). The first cooling fluid flow space (331) is defined by being surrounded by the first cooling frame outer surface (311), the first cooling frame outer periphery (312), and the first cooling frame inner periphery (313).

Specifically, in the illustrated embodiment, one longitudinal side of the first cooling fluid flow space (331), i.e., the front side, is surrounded by the first cooling frame outer surface (311). The outer side of the first cooling fluid flow space (331) in the width direction and height direction, i.e., the outer side of the left, right, upper, and lower sides, is surrounded by the first cooling frame outer periphery (312). The inner side of the first cooling fluid flow space (331) in the width direction and height direction, i.e., the inner side of the left, right, upper, and lower sides, is surrounded by the first cooling frame inner periphery (313).

The longitudinal other side of the first cooling fluid flow space (331), in the illustrated embodiment the rear side, is formed open. The first cooling fluid flow space (331) is connected to the second cooling fluid flow space (332) through the other side.

The first cooling fluid flow space (331) is connected to the outside through a coupling opening (314). In addition, the first cooling fluid flow space (331) can be fluidly connected to an external cooling fluid supply source (not shown) through a communication member (340) penetrating the coupling opening (314).

The first cooling fluid flow space (331) is connected to the outside through a discharge opening (360). Cooling fluid that has received heat from the terminal (200) can flow out to the outside through the discharge opening (360).

The second cooling fluid flow space (332) is formed inside the second cooling frame (320). The second cooling fluid flow space (332) is defined by being surrounded by the second cooling frame outer surface (321), the second cooling frame outer periphery (322), and the second cooling frame inner periphery (323).

Specifically, in the illustrated embodiment, one longitudinal side of the second cooling fluid flow space (332), i.e., the rear side, is surrounded by the second cooling frame outer surface (321). The outer side of the second cooling fluid flow space (332) in the width direction and height direction, i.e., the outer side of the left, right, upper, and lower sides, is surrounded by the second cooling frame outer periphery (322). The inner side of the second cooling fluid flow space (332) in the width direction and height direction, i.e., the inner side of the left, right, upper, and lower sides, is surrounded by the second cooling frame inner periphery (323).

The other longitudinal side of the second cooling fluid flow space (332), in the illustrated embodiment the front side, is formed open. The second cooling fluid flow space (332) is connected to the first cooling fluid flow space (331) through the other side.

The flue member (340) fluidly connects an external cooling fluid supply source (not shown) and the cooling device (300). A pipe or hose, etc., may be coupled to the flue member (340), so that the flue member (340) can be fluidly connected to each cooling fluid supply source (not shown).

The communication member (340) is coupled with the first cooling frame (310). Specifically, the communication member (340) is coupled through a coupling opening (314) formed through a front side surface of the first cooling frame (310). The communication member (340) is coupled with a cooling fluid flow space (330) formed inside the first and second cooling frames (310, 320).

The communication member (340) may be provided in any shape that can communicate with an external cooling fluid supply source (not shown) and a cooling fluid flow space (330). In the illustrated embodiment, the communication member (340) is provided in the shape of a pipe that has a circular cross-section and extends in the front-rear direction, but has a hollow space formed inside.

In the above embodiment, one longitudinal side of the communication member (340), the front side in the illustrated embodiment, may be coupled with the above-described pipe or hose or may be fluidly connected directly to a cooling fluid supply source (not illustrated). The other longitudinal side of the communication member (340), the rear side in the illustrated embodiment, may be formed open to communicate with a cooling fluid flow space (330) (specifically, a first cooling fluid flow space (331)).

As described above, since the flue member (340) and the connecting opening (314) through which the flue member (340) is penetrated and connected are arranged on the upper side of the first cooling frame (310), the flow effect and heat exchange efficiency of the introduced cooling fluid can be improved.

The coupling through-hole (350) is a portion where the cooling device (300) is coupled to the terminal (200). The coupling through-hole (350) can accommodate the terminal (200). Accordingly, the cooling device (300) is arranged to at least partially surround the terminal (200), so that heat generated in the terminal (200) can be effectively transferred to the cooling device (300).

The coupling penetration hole (350) is formed inside the first and second cooling frames (310, 320). The coupling penetration hole (350) is formed to penetrate in the longitudinal direction of the first and second cooling frames (310, 320), i.e., in the front-back direction. At this time, any communication between the coupling penetration hole (350) and the cooling fluid flow space (330) is blocked.

The coupling through hole (350) can be defined as a space surrounded by the first and second cooling frame inner peripheries (313, 323). Specifically, the coupling through hole (350) is defined such that each side in the width direction and height direction, i.e., the upper side, the lower side, the left side, and the right side, is surrounded by the first and second cooling frame inner peripheries (313, 323).

Each longitudinal side of the coupling through-hole (350), the front side and the rear side in the illustrated embodiment, are formed as open. The terminal (200) can be introduced into the coupling through-hole (350) through one longitudinal side of the coupling through-hole (350), the rear side in the illustrated embodiment. In addition, a portion of the heat generated in the terminal (200) can be directly released to the outside through the other longitudinal side of the coupling through-hole (350), the front side in the illustrated embodiment.

The coupling through hole (350) may have a shape corresponding to the shape of the terminal (200). In the illustrated embodiment, the coupling through hole (350) is formed as a space in the shape of a square pillar having a height in the vertical direction, a width in the left-right direction, and a length in the front-back direction.

At this time, the second height (H2), which is the height of the coupling through hole (350), may be greater than or equal to the first height (H1), which is the height of the terminal (200). In addition, the second width (W2), which is the width of the coupling through hole (350), may be greater than or equal to the first width (W1), which is the width of the terminal (200). Accordingly, the terminal (200) can be easily inserted into the coupling through hole (350).

Additionally, the second height (H2) may be less than or equal to the third height (H3), which is the height of the inner circumference (313) of the first cooling frame. The second width (W2) may be less than or equal to the third width (W3), which is the width of the inner circumference (313) of the first cooling frame.

The joint penetration hole (350) may be divided into a plurality of parts. Some of the plurality of parts may be formed inside the first cooling frame (310). Others of the plurality of parts may be formed inside the second cooling frame (320).

In the illustrated embodiment, the coupling through hole (350) includes a first coupling through hole (351) and a second coupling through hole (352).

The first coupling through hole (351) constitutes one longitudinal side of the coupling through hole (350), the front side in the illustrated embodiment. The first coupling through hole (351) is formed inside the first cooling frame (310). The first coupling through hole (351) is defined by being at least partially surrounded by the inner circumference (313) of the first cooling frame.

Specifically, the first coupling penetration hole (351) is surrounded by the inner circumference (313) of the first cooling frame on each side in the height direction and width direction, i.e., the upper side, the lower side, the left side, and the right side.

Each longitudinal side of the first coupling through-hole (351), i.e., the front side and the rear side in the illustrated embodiment, are formed open. The first coupling through-hole (351) can be communicated with the outside through one longitudinal side, i.e., the front side. The other longitudinal side of the first coupling through-hole (351), i.e., the rear side in the illustrated embodiment, is communicated with the second coupling through-hole (352).

The second coupling through hole (352) constitutes the other longitudinal side of the coupling through hole (350), the rear side in the illustrated embodiment. The second coupling through hole (352) is formed inside the second cooling frame (320). The second coupling through hole (352) is defined by being at least partially surrounded by the inner circumference (323) of the second cooling frame.

Specifically, the second coupling penetration hole (352) is surrounded by the inner circumference of the second cooling frame (323) on each side in the height direction and width direction, i.e., the upper side, the lower side, the left side, and the right side.

Each longitudinal side of the second coupling through-hole (352), i.e., the front side and the rear side in the illustrated embodiment, are formed to be open. The second coupling through-hole (352) is connected to the first coupling through-hole (351) through one longitudinal side, i.e., the front side. The second coupling through-hole (352) can be connected to the outside through the other longitudinal side, i.e., the rear side.

At this time, the second height (H2) may be less than or equal to the third height (H3), which is the height of the inner circumference (323) of the second cooling frame. In addition, the second width (W2) may be less than or equal to the third width (W3), which is the width of the inner circumference (323) of the second cooling frame.

The discharge opening (360) constitutes a passage through which the cooling fluid provided to the cooling device (300) is discharged back to the outside. The discharge opening (360) communicates the cooling fluid flow space (330) with the outside. The cooling fluid flowing in the cooling fluid flow space (330) and receiving heat from the terminal (200) can be discharged to the outside through the discharge opening (360).

The discharge opening (360) may be formed in the first cooling frame (310) or the second cooling frame (320). The discharge opening (360) may be formed through the first cooling frame (310) or the second cooling frame (320) to communicate with the cooling fluid flow space (330) and the outside. In the illustrated embodiment, the discharge opening (360) may be formed through the inner circumference (313) of the first cooling frame to communicate with the cooling fluid flow space (330) and the outside.

A plurality of discharge openings (360) may be formed. The plurality of discharge openings (360) may be spaced apart from each other to form discharge passages for the cooling fluid at different locations. In the illustrated embodiment, five discharge openings (360) are formed on the left and right sides of the inner circumference (313) of the first cooling frame. Each of the five discharge openings (360) surrounds the terminal (200) on the left and right sides, respectively.

The discharge opening (360) may have any shape that can constitute an outlet passage for the cooling fluid. In the illustrated embodiment, the discharge opening (360) is formed as a space in the shape of a disk having a circular cross-section and a thickness in the left-right direction.

The cooling device (300) according to the present embodiment is arranged such that the discharge opening (360) faces the terminal (200). In other words, the discharge opening (360) is arranged to overlap the terminal (200) in one direction, i.e., in the left-right direction in the illustrated embodiment. Accordingly, the cooling fluid flowing out of the discharge opening (360) can be configured to re-cool the terminal (200).

As described above, in the embodiment in which the discharge openings (360) are respectively positioned on the left and right sides of the inner circumference of the first cooling frame (313), each side of the terminal (200) in the width direction can be cooled by the flowing cooling fluid. Accordingly, the cooling efficiency of the terminal (200) can be improved.

The flow path forming member (370) forms a flow path for the cooling fluid provided to the cooling device (300). With the flow path forming member (370) provided, the cooling fluid provided to the cooling device (300) can flow for a sufficiently long time in the cooling fluid flow space (330) and receive heat from the terminal (200).

That is, by the euro forming member (370), the cooling fluid introduced into the cooling fluid flow space (330) may not flow out directly to the discharge opening (360).

The euro forming member (370) is coupled to the first cooling frame (310). Specifically, the euro forming member (370) is accommodated in the first cooling fluid flow space (331) and can be supported by the inner circumference (313) of the first cooling frame.

At this time, the flow path forming member (370) may be spaced apart from the first cooling frame outer circumference (312) and the first cooling frame inner circumference (313) by a predetermined distance. The cooling fluid provided to the cooling device (300) may flow in the space formed between the first cooling frame outer circumference (312) or the first cooling frame inner circumference (313) and the flow path forming member (370).

In the illustrated embodiment, the euro forming member (370) includes a euro body (371) and a euro opening (372).

The euro body (371) constitutes the body of the euro forming member (370). The euro body (371) is coupled to the first cooling frame (310) and at least partially partitions the cooling fluid flow space (330).

The flow path of the cooling fluid flowing into the cooling fluid flow space (330) may be any shape that can form a flow path. In the illustrated embodiment, the flow path body (371) has a rectangular cross-section and a thickness in the front-back direction, and is a three-dimensional shape with a flow path opening (372) formed therein.

At this time, the thickness of the euro body (371) may be less than or equal to the thickness of the first cooling fluid flow space (331), i.e., the length in the front-back direction.

The euro opening (372) is a space formed inside the euro body (371). The euro opening (372) is formed to penetrate the thickness direction of the euro body (371), in the front-back direction in the illustrated embodiment.

The euro opening (372) accommodates the first cooling frame inner circumference (313). Accordingly, the inner surface of the euro body (371) surrounding the euro opening (372) can be supported by the first cooling frame inner circumference (313).

The euro opening (372) may have a shape corresponding to the shape of the inner circumference of the first cooling frame (313). In the illustrated embodiment, the euro opening (372) has a rectangular cross-section and is formed as a polygonal plate-shaped space having a thickness in the front-back direction.

At this time, the height of the flow path opening (372), that is, the fourth height (H4) which is the length in the vertical direction, may be greater than or equal to the third height (H3) which is the height of the inner circumference (313) of the first cooling frame. In addition, the width of the flow path opening (372), that is, the fourth width (W4) which is the length in the left-right direction, may be greater than or equal to the third width (W3) which is the width of the inner circumference (313) of the first cooling frame.

Accordingly, the inner surface of the duct body (371) surrounding the duct opening (372) may be spaced at least partially apart from the inner surface (313) of the first cooling frame. The space formed by the spaced apart may be defined as a communication space (S). At least a portion of the cooling fluid introduced into the cooling fluid flow space (330) may enter the discharge opening (360) through the communication space (S).

Referring to FIGS. 15 and 16, the detailed structure of the cooling device (300) according to the above-described embodiment and the flow of cooling fluid formed in the cooling device (300) are illustrated as examples.

Referring to Fig. 15, a flow path forming member (370) is positioned in the cooling fluid flow space (330). The flow path forming member (370) is positioned to overlap the discharge opening (360) along its width direction, i.e., the left-right direction in the illustrated embodiment.

At this time, as described above, the fourth width (W4) of the euro opening (372) is formed to be greater than the third width (W3) of the first cooling frame inner circumference (313), so that the euro body (371) and the first cooling frame inner circumference (313) can be at least partially separated from each other.

Accordingly, the cooling fluid introduced through the communication member (340) flows along the cooling fluid flow space (330) and receives heat, and then can be discharged to the outside through the discharge opening (360).

In particular, as illustrated in FIG. 16, in an embodiment in which a plurality of discharge openings (360) are provided and arranged to face the coupling through-hole (350) and the terminal (200) accommodated therein, the cooling fluid discharged through each discharge opening (360) can cool the terminal (200) again. Accordingly, since the terminal (200) is cooled multiple times, the cooling effect of the terminal (200) can be improved.

Referring to FIGS. 17 to 22, a cooling device (300) according to another embodiment of the present invention is illustrated. In the illustrated embodiment, the cooling device (300) includes a first cooling frame (310), a second cooling frame (320), a cooling fluid flow space (330), a communication member (340), a coupling through hole (350), a discharge opening (360), and a flow path forming member (370).

The cooling device (300) according to the present embodiment has a difference in the position of the discharge opening (360) compared to the cooling device (300) according to the above-described embodiment.

That is, in the cooling device (300) according to the present embodiment, a discharge opening (360) is formed on the outer surface (311) of the first cooling frame. In addition, the flow path forming member (370) is arranged to partially overlap the discharge opening (360) along the thickness direction of the cooling device (300), i.e., the front-back direction.

In addition, the structure and coupling relationship of other components are the same as each component of the cooling device (300) according to the above-described embodiment and the coupling relationship therebetween. Accordingly, the description of the first cooling frame (310), the second cooling frame (320), the cooling fluid flow space (330), the communication member (340), and the coupling through-hole (350) provided in the cooling device (300) according to the present embodiment will be replaced with the description described above.

Hereinafter, a cooling device (300) according to the present embodiment will be described with a focus on the discharge opening (360) and the flow path forming member (370).

The discharge opening (360) communicates the cooling fluid flow space (330) with the outside. The cooling fluid flowing in the cooling fluid flow space (330) and receiving heat from the terminal (200) can be discharged to the outside of the cooling device (300) through the discharge opening (360).

A discharge opening (360) is formed in the first cooling frame (310). At this time, the discharge opening (360) may be formed on a side of the surface of the first cooling frame (310) opposite the main frame (110), i.e., the front side in the illustrated embodiment. That is, the discharge opening (360) is formed to penetrate the outer surface (311) of the first cooling frame located on the front side.

Meanwhile, since the discharge opening (360) is formed through the outer surface (311) of the first cooling frame, it is difficult for the cooling fluid discharged from the cooling device (300) to directly cool the terminal (200). That is, the cooling fluid flows out in a direction other than the direction toward the terminal (200), i.e., toward the front.

At this time, it is preferable that the introduced cooling fluid flows in the cooling fluid flow space (330) for a sufficient period of time and receives heat from the terminal (200) before flowing out. This is because, compared to the cooling device (300) according to the above-described embodiment, the cooling fluid flowing out of the cooling device (300) may come into contact with the terminal (200) and the effect of cooling the terminal (200) again may be relatively reduced.

Accordingly, as best illustrated in FIG. 20, the cooling device (300) according to the present embodiment is arranged such that the flow path forming member (370) at least partially covers the discharge opening (360). Accordingly, the area of the open portion of the discharge opening (360) is reduced, so that the immediate outflow of the introduced cooling fluid can be minimized.

As a result, the cooling fluid introduced into the cooling fluid flow space (330) can be discharged to the outside of the cooling device (300) after receiving heat from the terminal (200) for a sufficient period of time.

Meanwhile, since the discharge opening (360) is at least partially covered by the flow path forming member (370), smooth discharge of the cooling fluid may be difficult. To address this, the cooling device (300) according to the present embodiment may include a greater number of discharge openings (360) compared to the cooling device (300) according to the above-described embodiment.

That is, in the illustrated embodiment, five discharge openings (360) are provided on each of the upper and lower sides of the first cooling frame outer surface (311), and five on each of the left and right sides. Accordingly, even when the discharge openings (360) are partially covered by the flow path forming member (370), the cooling fluid that has exchanged heat with the terminal (200) can flow out smoothly.

That is, as illustrated in Fig. 22, the cooling fluid introduced into the cooling fluid flow space (330) can flow out toward the front side through a plurality of discharge openings (360). At this time, the cooling fluid can flow out toward the front side through a relatively greater number of discharge openings (360).

Referring to Fig. 23, the current connection relationship between each component provided in a circuit breaker (10) according to an embodiment of the present invention is illustrated as an example. In the illustrated embodiment, the circuit breaker (10) further includes a control unit (400).

The control unit (400) is electrically connected to the temperature sensor (130). The control unit (400) can receive information related to the temperature of the terminal (200) detected by the temperature sensor (130). The control unit (400) can calculate control information for controlling the compressor (Comp) in accordance with the received information.

The control unit (400) is electrically connected to the compressor (Comp). The control unit (400) can control the compressor (Comp) in accordance with the calculated control information. As described above, the compressor (Comp) can be fluidly connected to the communication member (340) to provide a cooling fluid. Accordingly, the cooling device (300) can be provided with a cooling fluid having a flow rate or temperature corresponding to the temperature of the terminal (200).

The control unit (400) can compare the detected information with the preset reference temperature information and calculate control information for controlling the compressor (Comp) based on the result.

For example, the control unit (400) may calculate control information so that the compressor (Comp) operates only when the detected information exceeds the reference temperature information. In addition, the control unit (400) may calculate control information so that the compressor (Comp) operates to provide a greater flow rate of cooling fluid when the difference between the detected information and the reference temperature information exceeds the preset reference difference information.

The control unit (400) may be electrically connected to the temperature sensor (130), receive detected information, use the information to calculate control information, and control the compressor (Comp) in accordance with the calculated control information. The control unit (400) may be provided in any form capable of inputting, calculating, and outputting information, such as a microprocessor or CPU.

As described above, the temperature sensor (130) may be configured to include first to fourth temperature sensors (131, 132, 133, 134). In addition, the cooling device (300) may also include first to fourth cooling devices (300a, 300b, 300c, 300d), which may be fluidly connected to a plurality of compressors (Comp1, Comp2, Comp3, Comp4), respectively.

Accordingly, the control unit (400) is electrically connected to the first to fourth temperature sensors (131, 132, 133, 134) and can receive detected information. In addition, the control unit (400) is electrically connected to the first to fourth compressors (Comp1, Comp2, Comp3, Comp4) and can control them, respectively.

Accordingly, the flow rate and provision of cooling fluid provided to the first to fourth cooling devices (300a, 300b, 300c, 300d) can be independently controlled. Accordingly, cooling fluid can be provided in accordance with the amount of heat generated at each terminal (200a, 200b, 200c, 200d), thereby improving cooling efficiency and energy efficiency.

Referring to FIGS. 24 and 25, the flow of cooling fluid formed inside a circuit breaker (10) according to an embodiment of the present invention is illustrated as an example.

Referring to FIG. 24, the flow of cooling fluid formed inside a circuit breaker (10) having a cooling device (300) according to one embodiment of the present invention is illustrated.

When the compressor (Comp) is operated by the control unit (400), cooling fluid is provided to the cooling device (300). The cooling fluid, which enters the cooling fluid flow space (330) through the communication member (340), flows in the cooling fluid flow space (330) and receives heat from the terminal (200). Accordingly, the terminal (200) can be primarily cooled.

The cooling fluid flowing in the cooling fluid flow space (330) is discharged to the outside through the discharge opening (360). At this time, the discharge opening (360) is formed on the side facing the terminal (200) among the parts of the inner circumference (313) of the first cooling frame, i.e., on the left and right sides in the illustrated embodiment.

Therefore, the cooling fluid discharged through the discharge opening (360) flows toward the terminal (200) and can cool the terminal (200) again.

Meanwhile, as described above, the cooling fluid flow space (330) is at least partially partitioned by the euro forming member (370), so that the introduced cooling fluid can be immediately discharged and sufficiently flow through the cooling fluid flow space (330).

Referring to FIG. 25, the flow of cooling fluid formed inside a circuit breaker (10) having a cooling device (300) according to another embodiment of the present invention is illustrated.

When the compressor (Comp) is operated by the control unit (400), cooling fluid is provided to the cooling device (300). The cooling fluid that enters the cooling fluid flow space (330) through the communication member (340) flows in the cooling fluid flow space (330) and receives heat from the terminal (200).

At this time, the discharge opening (360) is at least partially covered by the flow forming member (370). Accordingly, the area of each of the plurality of discharge openings (360) is reduced, so that the introduced cooling fluid can sufficiently flow through the cooling fluid flow space (330) and then be discharged through the discharge opening (360).

Additionally, the number of discharge openings (360) may be greater than that of the embodiment illustrated in FIG. 24. Accordingly, even if the area of each discharge opening (360) is reduced, the total area of the discharge openings (360) may be maintained, so that the introduced cooling fluid may be discharged smoothly.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

10: Circuit breaker 100: Circuit breaker body

110: Main frame 120: Arc arc member

121: First arc extinguishing member 122: Second arc extinguishing member

123: Third arc extinguishing member 123: Fourth arc extinguishing member

130: Temperature sensor 131: First temperature sensor

132: Second temperature sensor 133: Third temperature sensor

134: 4th temperature sensor 200: Terminal

200a: Terminal 1 200b: Terminal 2

200c: Terminal 3 200d: Terminal 4

210: Terminal body 211: First terminal extension

212: Terminal 2 Extension 213: Terminal 3 Extension

220: Terminal opening 300: Cooling device

300a: First cooling device 300b: Second cooling device

300c: 3rd cooling unit 300d: 4th cooling unit

310: First cooling frame 311: First cooling frame outer surface

312: First cooling frame outer circumference 313: First cooling frame inner circumference

314: Mating opening 314a: First mating opening

314b: Second coupling opening 320: Second cooling frame

321: Second cooling frame outer surface 322: Second cooling frame outer periphery

323: Second cooling frame inner circumference 330: Cooling fluid flow space

331: First cooling fluid flow space 332: Second cooling fluid flow space

340: flue member 350: joint penetration hole

351: First joint through hole 352: Second joint through hole

360: exhaust opening 370: flow forming member

371: Euro body 372: Euro opening

400: Control unit H1: First height

H2: Second height H3: Third height

H4: 4th height W1: 1st width

W2: Second width W3: Third width

W4: Fourth width Comp: Compressor

S: Communication space

Claims (14)

Circuit breaker body with space formed inside; A terminal coupled to the circuit breaker body, electrically connected to the outside, and at least partially exposed to the outside of the circuit breaker body along one direction; and A cooling device is coupled to the circuit breaker body so as to be adjacent to the terminal and configured to receive heat generated from the terminal, The above cooling device, A cooling frame surrounding the terminal from the outside and having a cooling fluid flow space formed inside; and A discharge opening is formed through each side of the cooling frame except for the side facing the circuit breaker body, and connects the cooling fluid flow space to the outside, and constitutes a passage through which the cooling fluid flows out. crossing gate. In the first paragraph, The above cooling device, A connecting through hole formed through the inside of the cooling frame along the above direction and configured to accommodate the terminal, The above discharge opening is formed on the side of each side of the cooling frame facing the terminal, The cooling fluid discharged from the above discharge opening is configured to further cool the terminal. crossing gate. In the first paragraph, The above cooling device, Includes an inner periphery of a cooling frame extending around the terminal, The above discharge opening is formed on the inner periphery of the cooling frame, crossing gate. In the third paragraph, The above discharge openings are formed in a pair of portions that surround the terminal in the width direction among the portions inside the cooling frame. crossing gate. In paragraph 4, The above discharge openings are provided in multiple numbers, and the multiple discharge openings are spaced apart along the height direction of the terminal in a pair of the above sections inside the cooling frame. crossing gate. In the first paragraph, The above discharge opening is, Formed on one side of each side of the above cooling frame opposite to the circuit breaker body, crossing gate. In the first paragraph, The above cooling frame, A cooling frame outer surface is positioned opposite to the circuit breaker body along the above direction and covers the cooling fluid flow space, The above discharge opening is formed on the outer surface of the cooling frame, crossing gate. In paragraph 7, The above cooling device, A connecting through hole formed through the inside of the cooling frame along the above direction and configured to accommodate the terminal, The above discharge openings are provided in multiple numbers, and the multiple discharge openings are spaced apart along the outer surface of the cooling frame so as to surround the coupling through hole. crossing gate. In paragraph 7, The above cooling device, A flow path forming member is included in the cooling fluid flow space and is arranged to at least partially cover the discharge opening along the one direction. crossing gate. In the first paragraph, The above cooling device, A cooling frame is connected to one side in the height direction and includes a communication member that is connected to an external compressor and the cooling fluid flow space to receive the cooling fluid. crossing gate. In Article 10, A control unit configured to be communicatively connected to the compressor and configured to control the flow rate and flow of the cooling fluid, crossing gate. In Article 11, The above circuit breaker body, A temperature sensor positioned adjacent to the terminal and configured to detect information about the temperature of a location adjacent to the terminal, The control unit is configured to be communicatively connected to the temperature sensor, receive the detected information, and calculate control information for controlling the compressor using the information. crossing gate. In paragraph 12, The above terminals are provided in multiple numbers, and the multiple terminals are spaced apart from each other in different directions. The above temperature sensors are provided in multiple numbers, and the multiple temperature sensors are spaced apart from each other so that they are respectively positioned adjacent to the multiple terminals along the other direction. crossing gate. In Article 13, The above cooling devices are provided in plurality, and the plurality of cooling devices are respectively positioned adjacent to the plurality of terminals and fluidly connected to the plurality of compressors, The above control unit, A plurality of temperature sensors and a plurality of compressors are each communicatively connected to each other, and configured to independently control the plurality of compressors. crossing gate.