CN116336700A - Condenser with built-in oil separation structure - Google Patents

Abstract

The application provides a condenser with an oil separation structure inside, which comprises a shell and the oil separation structure. The housing includes a length, a width, and a height and defines a cavity, and at least one inlet tube is provided to receive a refrigerant to be condensed containing a lubricant oil. An oil separation structure is secured in the cavity and includes a separation chamber for separating lubricant oil from refrigerant gas in the refrigerant. At least one inlet pipe extends into the separation chamber. The receiving chamber includes first and second condensing chambers separated by an oil separating structure and located at both sides of the separating chamber in a width direction of the housing, respectively, and extending along a length direction of the housing, respectively. The upper part of the oil separating structure is provided with a first and a second exhaust ports which respectively connect the first and the second condensing chambers with the separating chamber in fluid communication so that the refrigerant gas separated by the separating chamber can enter the first and the second condensing chambers to be condensed, and the bottom part of the oil separating structure is provided with at least one oil drain port so that the lubricating oil separated by the separating chamber can be discharged from the separating chamber.

Description

Condenser with built-in oil separation structure

technical field

The present application relates to a condenser, in particular to a condenser with an internal oil separation structure.

Background technique

The refrigeration and air-conditioning system includes a condenser, which is used to condense the high-temperature and high-pressure gas-phase refrigerant discharged from the compressor into a medium-temperature and high-pressure liquid-phase refrigerant. In screw compressors, lubricating oil is required between the rotors to reduce compressor noise, while lubricating oil can reduce gas leakage during rotor meshing and improve compressor performance. Therefore, during the actual operation of the screw compressor, the gas discharged from the compressor includes refrigerated oil droplets in addition to the gas-phase refrigerant. If more lubricating oil enters the condenser and evaporator, it will not only cause oil shortage in the oil supply system, increase oil shortage and damage to the moving parts of the compressor, but also excessive lubricating oil will adhere to the heat exchange tube in a thin film state, causing the entire refrigeration and air conditioning The heat transfer effect of the system cannot reach the design state. Therefore, it is necessary to set up an oil separation structure to separate the gas-phase refrigerant and oil discharged from the compressor, and the separated oil is returned to the oil tank of the compressor for use by the compressor.

Contents of the invention

The present application provides a condenser including a built-in oil separation structure. The built-in oil separation structure in the condenser provides excellent oil separation, and the condenser provides excellent heat exchange efficiency.

According to one aspect of the present application, the present application provides a condenser with a built-in oil separation structure, and the condenser includes a shell and an oil separation structure. The casing defines a cavity, and at least one inlet pipe is provided on the casing for receiving the refrigerant to be condensed containing lubricating oil, and the casing includes a length direction, a height direction and a width direction. The oil separation structure is fixed in the cavity, the oil separation structure includes a separation chamber, and the at least one inlet pipe extends into the separation chamber, wherein the separation chamber is configured to transfer the refrigerant The lubricating oil and refrigerant gas are separated. Wherein, the cavity includes a first condensing chamber and a second condensing chamber separated by the oil separation structure, and the first condensing chamber and the second condensing chamber are respectively They are located on both sides of the separation chamber and extend along the length direction of the casing respectively. Wherein, the upper part of the oil separation structure is provided with a first exhaust port and a second exhaust port respectively connecting the first condensing chamber and the second condensing chamber with the separation chamber in fluid communication, so that through the The refrigerant gas separated by the separation chamber can enter the first condensation chamber and the second condensation chamber for condensation, and at least one oil discharge port is provided at the bottom of the oil separation structure so that The separated lubricating oil can exit the separation chamber.

In the above-mentioned condenser with built-in oil separation structure, the separation chamber is centrally arranged in the cavity in the width direction of the housing.

In the above-mentioned condenser with built-in oil separation structure, the oil separation structure includes several vertical separation plates arranged at intervals in the separation chamber along the length direction of the casing, the several vertical separation plates The separating plates are each arranged transversely to the direction of extension of the separating chamber. Wherein, at least a part of the several vertical separation plates is set to block the upper fluid passage in the separation chamber, and at least another part of the several vertical separation plates is set to block the lower fluid passage in the separation chamber. to block.

In the condenser with built-in oil separation structure as described above, on one side of the first exhaust port and the second exhaust port, the upper fluid passage in the separation chamber is blocked. Said at least one part of said vertical separation plates is alternately arranged with said at least another part of said vertical separation plates blocking a lower fluid passage in said separation chamber.

In the condenser with built-in oil separation structure as described above, the at least one inlet pipe is centrally arranged on the top of the casing in the width direction of the casing.

In the above-mentioned condenser with built-in oil separation structure, the part of the at least one inlet pipe protruding into the separation chamber extends along the height direction of the casing. The oil separation structure also includes a transverse separation plate located below the at least one inlet pipe.

In the above-mentioned condenser with built-in oil separation structure, the part of the at least one inlet pipe protruding into the separation chamber is bent toward the direction away from the first exhaust port and the second exhaust port Bend into a tube shape.

In the above-mentioned condenser with a built-in oil separation structure, the separation chamber extends along the length direction of the casing, and the separation chamber is parallel to the plane formed by the height direction and the width direction of the casing. The cross-section is substantially funnel-shaped such that the separation chamber has a mouth and a shank, the width of which is dimensioned slightly larger than the diameter d of the at least one inlet pipe.

In the above-mentioned condenser provided with an oil separation structure, the oil separation structure includes a casing, and the casing defines the separation chamber. The housing includes opposing side walls, opposing end walls, and opposing top and bottom walls connected to each other. The top wall abuts against the top inner surface of the housing, and the upper parts of the opposite side walls are respectively provided with the first exhaust port and the second exhaust port. said at least a portion of said vertical separation plate blocking an upper fluid passage in said separation chamber extends at least part of the height of said separation chamber from said top wall, blocking a lower fluid passage in said separation chamber The at least another portion of the vertical separation plate extends from the bottom of the oil separation structure at least part of the height of the separation chamber.

In the above-mentioned condenser provided with an oil separation structure, the oil separation structure includes a casing, and the casing defines the separation chamber. The housing includes opposite side walls, opposite end walls, and a bottom wall connected to each other. The tops of the opposite side walls and the opposite end walls abut against the top inner surface of the housing, and the upper parts of the opposite side walls are respectively provided with the first exhaust port and the second exhaust port. exhaust vent.

In the condenser with built-in oil separation structure as described above, the at least another part of the vertical separation plate that blocks the lower fluid passage in the separation chamber is spaced from the bottom wall by a certain distance to define a guide. oil channel.

In the above-mentioned condenser with built-in oil separation structure, the bottom wall of the oil separation structure abuts against the bottom inner surface of the housing, and the at least one oil discharge port is arranged on the bottom wall superior. The condenser includes a first subcooling box and a second subcooling box located at the bottom of the cavity, and the first subcooling box and the second subcooling box are respectively located in the width direction of the housing Both sides of the oil separation structure.

In the above-mentioned condenser provided with an oil separation structure, the condenser includes a subcooling box arranged at the bottom of the cavity, and the bottom wall of the oil separation structure abuts against the subcooling box. The oil separation structure also includes at least one oil storage chamber arranged at the bottom of the oil separation structure and communicating with the bottom of the separation chamber, and the at least one oil discharge port is arranged at the bottom of the corresponding at least one oil storage chamber . Wherein, the at least one oil storage chamber is accommodated at the bottom of one of the first condensation chamber and the second condensation chamber.

According to another aspect of the present application, the present application provides a refrigerating and air-conditioning system, the refrigerating and air-conditioning system comprising the condenser with built-in oil separation structure according to the present application.

Description of drawings

Figure 1a is a cross-sectional view of a condenser according to one embodiment of the present application.

Fig. 1b is a cross-sectional view of the condenser shown in Fig. 1a along the direction A-A.

Fig. 1c shows the shell of the oil separation structure in the condenser shown in Fig. 1b.

Fig. 2a is a cross-sectional view of a condenser according to another embodiment of the present application.

Fig. 2b is a cross-sectional view of the condenser shown in Fig. 2a along the direction B-B.

Fig. 3a is a cross-sectional view of a condenser according to yet another embodiment of the present application.

Fig. 3b is a cross-sectional view of the condenser shown in Fig. 3a along the direction C-C.

Detailed ways

Various embodiments of the present application will be described below with reference to the accompanying drawings, which form a part hereof. It should be understood that, where possible, the same or similar reference numerals used in this application refer to the same components. Although directional terms, such as "up, down, left, right, top, bottom," etc., are used throughout this application to describe various example structural parts and elements of this application, these terms are used herein for convenience of description only. , determined based on the example orientations shown in the accompanying drawings. Since the embodiments disclosed in this application can be arranged in different orientations, these directional terms are for illustration only and should not be regarded as limiting.

Figures 1a-1c illustrate a condenser 10a according to an embodiment of the present application. Figure 1a is a cross-sectional view of a condenser 10a according to one embodiment of the present application. Fig. 1b is a cross-sectional view of the condenser 10a shown in Fig. 1a along the direction A-A. Fig. 1c shows the shell 202a of the oil separation structure 201a in the condenser 10a shown in Fig. 1b.

As shown in Figures 1a and 1b, the condenser 10a includes a housing 101 including a length direction, a width direction and a height direction as shown in Figure 1a. The casing 101 defines a cavity 102 , and the oil separation structure 201 a is fixed in the cavity 102 and extends along the length direction of the casing 101 . In FIG. 1 a , the oil separation structure 201 a extends the length of the cavity 102 . The oil separation structure 201a includes a separation chamber 203a.

As shown in FIG. 1b, the cavity 102 includes a first condensation chamber 104a and a second condensation chamber 105a separated by an oil separation structure 201a, and the first condensation chamber 104a and the second condensation chamber 105a are located in the width direction of the housing 101 They are respectively located on two sides of the separation chamber 203a, and extend the length of the cavity 102 respectively. A plurality of condensation pipes 106 are respectively provided in the first condensation chamber 104a and the second condensation chamber 105a for receiving cooling fluid. As will be discussed in detail below, the refrigerant gas entering the first condensation chamber 104a and the second condensation chamber 105a from the separation chamber 203a exchanges heat with the cooling fluid in the condensation pipe 106, so that the refrigerant gas is cooled into liquid refrigerant. In the embodiment shown in FIG. 1 b , the separation chamber 203 a is centrally arranged in the cavity 102 in the width direction of the housing 101 . In some embodiments, the separation chamber 203 a is arranged non-centrally in the cavity 102 in the width direction of the housing 101 .

The chamber 102 is also provided with subcooling boxes 107.1 and 107.2 for further cooling the refrigerant cooled by the cooling fluid in the condensation pipe 106. The cooled refrigerant is sent to the throttle valve of the refrigeration and air conditioning system. The subcooling boxes 107.1 and 107.2 are located on both sides of the oil separation structure 201a, and are accommodated in the lower part of the first condensation chamber 104a and the second condensation chamber 105a respectively. The structure of the split subcooling box makes the oil separation structure 201a abut against the bottom inner surface of the shell 101 of the condenser 10a (described in detail below), so that the separation chamber 203a extends the entire height of the shell 101 . This makes it possible to provide the maximum flight height for the refrigerant entering the separation chamber 203a, thereby increasing the flight time of the refrigerant in the separation chamber 203a to improve the gravity separation effect, thereby facilitating sufficient separation of lubricating oil. This also allows the separation chamber 203a to be designed with a smaller width, so that the two condensation chambers (the first condensation chamber 104a and the second condensation chamber 105a) have more space to arrange more condensation pipes 106, thereby providing The heat exchange capacity of the condenser 10a.

The casing 101 is provided with two inlet pipes 301a connected to the compressor (not shown in the figure) near both ends of the casing 101, for receiving the refrigerant to be condensed containing liquid lubricating oil from the compressor (hereinafter referred to as "Refrigerant"). The inlet pipe 301a protrudes into the separation chamber 203a so as to send refrigerant received from the compressor into the separation chamber 203a to separate liquid lubricating oil and refrigerant gas in the refrigerant in the separation chamber 203a. As shown in FIG. 1a, the part of the inlet pipe 301a protruding into the separation chamber 203a is bent into an elbow shape, so that the outlets 303a of the inlet pipe 301a are respectively facing the two ends of the oil separation structure 201a. In some embodiments, as shown in FIG. 1 b , both inlet pipes 301 a are centrally arranged on the top of the housing 101 in the width direction of the housing 101 . In some embodiments, the inlet pipe 301 a may also be arranged non-centered on the top of the housing 101 in the width direction of the housing 101 . Although the number of inlet pipes 301a is shown as two in FIG. 1a, it should be understood that in other embodiments, a different number of inlet pipes 301a may be provided. As an example, the number of inlet pipes 301a is one.

The structure of the oil separation structure 201a is described with reference to FIGS. 1a-1c. As shown in Figures 1a-1c, the oil separation structure 201a includes a housing 202a defining a separation chamber 203a. Housing 202a includes opposed side walls 204 and 205, opposed end walls 206 and 207, and opposed top and bottom walls 208 and 209a, side walls 204 and 205, end walls 206 and 207, and top and bottom walls 208 and 209a They are connected to each other to form the housing 202a.

As shown in Figures 1a and 1b, the upper portions of the opposite side walls 204 and 205 are respectively provided with a first exhaust port 210.1 and a second exhaust port 210.2. The first exhaust port 210.1 communicates with the first condensing chamber 104a, and the second exhaust port 210.2 communicates with the second condensing chamber 105a, so that the refrigerant gas separated by the separation chamber 203a passes through the first exhaust port 210.1 and the second row The air port 210.2 respectively enters the first condensation chamber 104a and the second condensation chamber 105a for condensation. The two inlet pipes 301a are bent away from the first exhaust port 210.1 and the second exhaust port 210.2 so that the outlets 303a of the two inlet pipes 301a are respectively facing a corresponding one of the end walls 206 and 207 of the oil separation structure 201a. In the embodiment shown in Figs. 1a-1c, the first exhaust port 210.1 and the second exhaust port 210.2 are oppositely arranged in the upper middle of the opposite side walls 204 and 205. In some embodiments where only one inlet pipe 301a is provided, the inlet pipe 301a is arranged close to the end wall 206 or 207 towards which its outlet 303a faces, while the first exhaust port 210.1 and the second exhaust port 210.2 are oppositely arranged on opposite sides The upper part of the walls 204 and 205 is close to the other of the end walls 206 and 207, so that the outlet 303a of the inlet pipe 301a is as far away as possible from the first exhaust port 210.1 and the second exhaust port 210.2, so that the refrigerant in the separation chamber 203a There is sufficient flight distance to realize the separation of lubricating oil.

As shown in Fig. 1c, an oil discharge port 214a is provided on the bottom wall 209a. Although not shown in the figure, it should be understood that the corresponding position of the shell 101 of the condenser 10a has an outlet corresponding to the oil discharge port 214a, so that the lubricating oil separated by the separation chamber 203a can be discharged through the oil discharge port 214a. In different embodiments, the number of oil discharge ports 214a may be different. As an example, the number of oil discharge ports 214a may be one, two or more.

As shown in Figures 1b and 1c, the section of the separation chamber 203a parallel to the plane formed by the height and width of the housing 101 is generally funnel-shaped such that the separation chamber 203a has a mouth 221a and a handle 222a. The width dimension W1 of the shank 222a is designed to be slightly larger than the diameter d of the inlet pipe 301a, which makes the shank 222a have as small a width as possible while facilitating the refrigerant to enter the separation chamber 203a. The as small a width as possible of the handle 222a makes the flow speed of the refrigerant in the handle 222a fast, which is beneficial to the impingement separation and centrifugal separation of lubricating oil (discussed in detail below). The small width of the handle 222a also enables the cavity 102 to provide more space for condensation. As shown in Figure 1b, since the handle 222a can have a very small width, most of the space of the cavity 102 is occupied by the first condensation chamber 104a and the second condensation chamber 105a, thus, the first condensation chamber 104a and the second condensation chamber can be Many condensation pipes are arranged in the condensation chamber 105a to improve the heat exchange capacity of the condenser 10a. The mouth portion 221a gradually expands upward from the handle portion 222a, so as to have a width gradually increasing upward from the handle portion 222a. This reduces the flow velocity of the refrigerant in the mouth portion 221a, thereby increasing the flight time of the refrigerant in the separation chamber 203a, improving the gravity separation effect, and facilitating the sufficient separation of lubricating oil. As shown in Figure 1a and Figure 1b, a filter screen 241 is provided below the positions of the first exhaust port 210.1 and the second exhaust port 210.2 in the port 221a, so that when the refrigerant leaves the separation chamber 203a and enters the first condensation chamber 104a and before the second condensing chamber 105a, the lubricating oil in the refrigerant is further separated. The mouth portion 221a is gradually opened upward from the handle portion 222a to reduce the flow velocity of the refrigerant when passing through the filter 241 , so that the filter 241 can better capture and separate the lubricating oil in the refrigerant. In some embodiments, the filter 241 is not provided in the mouth portion 221a.

As shown in Figures 1a and 1b, the bottom wall 209a of the oil separation structure 201a abuts against the bottom inner surface of the housing 101, and the top wall 208 abuts against the top inner surface of the housing 101, so that the oil separation structure 201a is fixed in the cavity 102 in. The structure of the oil separation structure 201 a makes the oil separation structure 201 a easy to manufacture and can be conveniently fixed in the cavity 102 . In some embodiments, the oil separation structure 201a is obtained by bending and/or connecting suitable materials. The manufactured oil separation structure 201a is pushed into the cavity 102 of the condenser 10a to abut against the bottom and top inner surfaces of the shell 101 of the condenser 10a to be easily fixed in the cavity 102 . In some embodiments, the oil separation structure 201a is configured without the top wall 208, in which case the side walls 204 and 205 and the end walls 206 and 207 of the oil separation structure 201a are directly connected to the housing 101. top inner surface.

Vertical separation plates 211 and 212 are arranged in the separation chamber 203a to block the flow of the refrigerant in the separation chamber 203a, thereby facilitating the separation of lubricating oil in the refrigerant. The arrangement of the vertical separation plates 211 and 212 is explained with reference to FIGS. 1a and 1b. The vertical separation plates 211 and 212 are each arranged transversely to the extension direction of the separation chamber 203a, and respectively abut against the opposite side walls 204 and 205 of the oil separation structure 201a. The vertical separation plate 211 extends downward from the top wall 208 of the oil separation structure 201a by part of the height of the separation chamber 203a for blocking the upper fluid passage in the separation chamber 203a. The vertical separation plate 212 extends upwards from the bottom of the oil separation structure 201a for part of the height of the separation chamber 203a, blocking the lower fluid passage in the separation chamber 203a. As shown in FIG. 1 a , the vertical separation plates 211 and 212 on the side where the first exhaust port 210 . 1 and the second exhaust port 210 . The distance between the vertical separation plates 211 and 212 in the length direction of the housing 101 and the distance between the vertical separation plate 211 and the end wall 206 or 207 of the oil separation structure 201a is designed such that a satisfactory oil separation effect can be obtained. In some embodiments, the sum of the heights of the vertical separation plate 211 and the vertical separation plate 212 is smaller than the height of the separation chamber 203a. In other embodiments, the sum of the heights of the vertical separation plate 211 and the vertical separation plate 212 is equal to the height of the separation chamber 203a. In some other embodiments, the sum of the heights of the vertical separation plate 211 and the vertical separation plate 212 is greater than the height of the separation chamber 203a.

As shown in Figure 1b, in the embodiment of Figures 1a-1c, the vertical separation plate 212 is spaced from the bottom wall 209a of the oil separation structure 201a by a certain distance, so that An oil guide channel 219a is defined between the bottom walls 209a of the 201a, and the oil guide channel 219a communicates with the oil discharge port 214a. Lubricating oil separated in the separation chamber 203a falls into the oil guide passage 219a and flows to the oil discharge port 214a to flow out and return to the compressor through the oil discharge port 214a. The oil guide channel 219a enables only one oil discharge port 214a to be provided on the bottom wall 209a of the oil separation structure 201a. In some embodiments, the vertical separation plate 212 extends upward from the bottom wall 209a of the oil separation structure 201a such that there is no oil guiding channel 219a. Thus, in these embodiments, the bottom wall 209a of the oil separation structure 201a is provided with a plurality of oil discharge ports 214a, respectively distributed between the vertical separation plates 212 and the vertical separation plate 212 and the end wall 206 of the oil separation structure 201a or between 207.

As shown in Figure 1a, in the embodiment of Figures 1a-1c, a vertical separation plate 211 and a vertical separation plate are respectively provided on one side of the position of the first exhaust port 210.1 and the second exhaust port 210.2 212. The vertical separation plate 211 is close to the inlet pipe 301a and is located on the opposite side of the inlet pipe 301a from the outlet 303a. The vertical separation plate 212 is located between the vertical separation plate 211 and the positions of the first exhaust port 210.1 and the second exhaust port 210.2 in the length direction of the housing 101. In other embodiments, different numbers of vertical separation plates 211 and 212 are provided in the separation chamber 203a.

The process of separating lubricating oil and refrigerant gas from the refrigerant entering the oil separation chamber 203a through the inlet pipe 301a on the right side shown in FIG. 1a will be described below with reference to FIG. 1a. It should be understood that the process of separating lubricating oil and refrigerant gas from the refrigerant entering the separation chamber 203a from the inlet pipe 301a located on the left side in FIG. 1a is similar.

As shown in FIG. 1 a , the refrigerant flows toward and hits the end wall 207 of the oil separation structure 201 a after being discharged from the outlet 303 a of the inlet pipe 301 a. Through the impact, part of the lubricating oil in the refrigerant is separated, and the separated lubricating oil drops into the oil guide channel 219a at the bottom of the separation chamber 203a, and the rest of the refrigerant is separated as the first impact after the refrigerant hits the end wall 207 Turn back, and after the first collision and separation, part of the refrigerant flows toward the vertical separation plate 211 , and part of the refrigerant flows toward the vertical separation plate 212 . Part of the refrigerant after the first impact separation flowing toward the vertical separation plate 211 hits the vertical separation plate 211, and the impact causes part of the lubricating oil in this part of the refrigerant after the first impact separation to be separated and drop to the oil guide channel 219a. In this process, the rest of the refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2 as the refrigerant after the second impact separation. Since the flow of the refrigerant after the second impact separation is blocked by the vertical separation plate 211, the refrigerant changes the flow direction after the second impact separation to bypass the obstruction of the vertical separation plate 211. This change of the movement direction makes the second impact After separation, the refrigerant rotates around the vertical separation plate 211, and the centrifugal force generated by the rotation further makes the lubricating oil in the refrigerant after the second impact separation is centrifugally separated, thereby dripping into the oil guide channel 219a, and the rest of the refrigerant is used as After the first centrifugal separation, the refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2, and enters the first condensation chamber 104a and the second condensation chamber through the first exhaust port 210.1 and the second exhaust port 210.2 respectively. Chamber 105a. Part of the first-impact-separated refrigerant flowing toward the vertical separation plate 212 hits the vertical separation plate 212, and the impact causes part of the lubricating oil in this part of the first-impact-separated refrigerant to be separated and drop to the oil guide channel 219a. , the rest of the refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2 after the third collision separation. Since the flow of the refrigerant after the third impact separation is blocked by the vertical separation plate 212, the refrigerant changes the flow direction after the third impact separation to bypass the obstruction of the vertical separation plate 212, and this change of the movement direction makes the third impact The separated refrigerant rotates around the vertical separation plate 212 when it flows, and the centrifugal force generated by the rotation further makes the lubricating oil in the third impact separated refrigerant be centrifugally separated, thereby dripping into the oil guide channel 219a, and the rest of the refrigeration After the second centrifugal separation, the refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2, and enters the first condensation chamber 104a and the second exhaust port 210.2 through the first exhaust port 210.1 and the second exhaust port 210.2 respectively. Two condensation chambers 105a. In addition, since the separation chamber 203a according to the present application provides enough flight height for the refrigerant, the lubricating oil in the refrigerant will still The lubricating oil separated from the refrigerant gas by gravity also falls to the oil guide passage 219a. Lubricating oil dropped into the oil guide passage 219a is discharged through the oil discharge port 214a to return to the compressor. In some embodiments, when the distance between the vertical separation plates 211 on both sides of the first exhaust port 210.1 and the second exhaust port 210.2 is relatively close, the refrigerant that reaches the bottom of the first exhaust port 210.1 and the second exhaust port 210.2 The lubricant generates a vortex between the two vertical separation plates 211, and the centrifugal force generated by the vortex further causes part of the lubricating oil to be separated and drop into the oil guide channel 219a. As described above, in the separation chamber 203a, the lubricating oil in the refrigerant and the refrigerant gas undergo collision separation, centrifugal separation, and gravity separation. At the same time, there are multiple separation methods so that the present application provides sufficient oil separation for the refrigerant.

Figures 2a-2b illustrate a condenser 10b according to another embodiment of the present application. Fig. 2a is a cross-sectional view of a condenser 10b according to another embodiment of the present application. Fig. 2b is a cross-sectional view of the condenser 10b shown in Fig. 2a along the direction B-B.

The condenser 10b of the embodiment shown in Figure 2a-Figure 2b is similar to the condenser 10a of the embodiment shown in Figure 1a-Figure 1c, the difference lies in the change of the oil separation structure and the resulting first condensation chamber and Variation of the second condensation chamber, and different arrangement of the vertical separation plate. For the purpose of making the description concise, only the differences between the condenser 10b and the condenser 10a will be described below.

As shown in Fig. 2a and Fig. 2b, an oil separation structure 201b is provided in the cavity of the condenser 10b, and the oil separation structure 201b includes a separation chamber 203b. Different from the oil separation structure 201a, the oil separation structure 201b has no top wall, therefore, its opposite side walls and opposite end walls are directly connected to the shell inner surface of the condenser 10b. It should be understood that, in some embodiments, the oil separation structure 201b is also designed to have a top wall 208 . An integrated subcooling box 107 is provided at the bottom of the cavity of the condenser 10b, and the bottom wall 209b of the oil separation structure 201b abuts against the subcooling box 107, so the height of the separation chamber 203b is smaller than that of the separation chamber 203a. The shank of the separation chamber 203b has a width W2. Considering that the height of the separation chamber 203b is smaller than that of the separation chamber 203a, the flight height of the refrigerant in the separation chamber 203b is reduced, and the resulting flight time is shortened, the width W2 of the handle of the separation chamber 203b is designed to be slightly It is larger than the width W1 of the shank of the separation chamber 203a, which makes the flight speed of the refrigerant in the separation chamber 203b slightly reduced, whereby the flight time of the refrigerant in the separation chamber 203b increases and the pressure loss during flight decreases . The time of flight provides the gravitational separation effect of the refrigerant in the separation chamber 203b, while the reduced pressure loss facilitates the impact separation and centrifugal separation of the refrigerant, thereby facilitating the sufficient separation of lubricating oil. The bottom of the oil separation structure 201b is provided with an oil storage chamber 215, and the oil storage chamber 215 is accommodated in the second condensation chamber 105b. The oil storage chamber 215 communicates with the oil guide channel 219b at the bottom of the oil separation structure 201b to collect the separated lubricating oil from the separation chamber 203b. An oil discharge port 214b is provided at the bottom of the oil storage chamber 215 to discharge the lubricating oil collected in the oil storage chamber 215 to the compressor. Since the oil storage chamber 215 occupies part of the space of the second condensing chamber 105b, in the refrigerating and air-conditioning system using the oil separation structure 201b according to this embodiment, the charging amount of refrigerant can be reduced.

Compared with the embodiment of Fig. 1a-Fig. 1c, in the embodiment of Fig. 2a-Fig. 2b, a vertical separation plate 213 is added on the side close to the position of the first exhaust port 210.1 and the second exhaust port 210.2, The vertical separation plate 213 has a similar arrangement to the vertical separation plate 211 . As shown in Figure 2a, on one side where the first exhaust port 210.1 and the second exhaust port 210.2 are located, two vertical separation plates 211 and 213 are arranged to form a barrier to the upper fluid passage in the separation chamber 203b, The provision of the vertical separation plate 212 forms a barrier to the lower fluid passage in the separation chamber 203b. The vertical separation plate 211 is close to the inlet pipe 301a and is located on the side opposite to the outlet 303a of the inlet pipe 301a. The vertical separation plate 213 is close to the position where the first exhaust port 210.1 and the second exhaust port 210.2 are located. The vertical separation plate 212 is located between the vertical separation plates 211 and 213 in the length direction of the condenser housing. It should be understood that since the oil separation structure 201b in the embodiment of FIGS. 2a-2b has no top wall, the vertical separation plates 211 and 213 in the embodiment of FIGS. The surface extends downwards. It should be understood that in other embodiments, different numbers of vertical separation plates 211 and 212 are provided in the separation chamber 203b.

The partial separation process of the refrigerant in the separation chamber 203b is similar to that in the separation chamber 203a. Specifically, like the separation process in the separation chamber 203a, the refrigerant entering the separation chamber 203b obtains the first centrifugally separated refrigerant and the second centrifugally separated refrigerant after passing through the vertical separation plates 211 and 212 . Different from that in the separation chamber 203a, since the separation chamber 203b has a vertical separation plate 213 at a position close to the first exhaust port 210.1 and the second exhaust port 210.2 compared with the separation chamber 203b, after the first centrifugal separation The refrigerant and the second centrifugally separated refrigerant are further separated based on the blocking of the vertical separation plate 213 before reaching the first exhaust port 210.1 and the second exhaust port 210.2. Specifically, the first centrifugally separated refrigerant and the second centrifugally separated refrigerant flow toward the vertical separation plate 213 and collide with the vertical separation plate 213 . The lubricating oil separated due to impact drops into the oil guide channel 219b, and the rest of the refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2 as the fourth impact-separated refrigerant. Since the flow of the refrigerant after the fourth impact separation is blocked by the vertical separation plate 213, the refrigerant changes the flow direction after the fourth impact separation to bypass the obstruction of the vertical separation plate 213. This change of the movement direction makes the fourth impact The separated refrigerant rotates around the vertical separation plate 213 when it flows, and the centrifugal force generated by the rotation further makes the lubricating oil in the fourth collision separated refrigerant be centrifugally separated, thereby dripping into the oil guide channel 219b, and the rest of the refrigeration The refrigerant continues to flow toward the first exhaust port 210.1 and the second exhaust port 210.2 after the third centrifugal separation. Since both sides of the first exhaust port 210.1 and the second exhaust port 210.2 are provided with vertical separation plates 213 close to the two exhaust ports, under the action of the two vertical separation plates 213 that are closer to each other, the second After three centrifugal separations, the refrigerant forms a vortex below the positions of the first exhaust port 210.1 and the second exhaust port 210.2. Based on the centrifugal force generated by the vortex, after the third centrifugal separation, part of the lubricating oil in the refrigerant is further centrifugally separated below the positions of the first exhaust port 210.1 and the second exhaust port 210.2, and falls into the oil guide channel 219b, and the rest The refrigerant used as the fourth centrifugally separated refrigerant enters the first condensing chamber 104b and the second condensing chamber 105b through the first exhaust port 210.1 and the second exhaust port 210.2 respectively. As in the separation chamber 203a, during the flow of the refrigerant in the separation chamber 203b towards the first exhaust port 210.1 and the second exhaust port 210.2, the lubricating oil also undergoes gravity separation. In some embodiments, when the distance between the vertical separation plates 211 and 213 is relatively close, the refrigerant arriving between the vertical separation plates 211 and 213 generates a vortex between the vertical separation plates 211 and 213, and the centrifugal force generated by the vortex Further, part of the lubricating oil is separated and dropped into the oil guide passage 219b. As described above, in the separation chamber 203b, the lubricating oil in the refrigerant and the refrigerant gas undergo collision separation, centrifugal separation, and gravity separation. At the same time, there are multiple separation methods so that the present application provides sufficient oil separation for the refrigerant.

Figures 3a-3b illustrate a condenser 10c according to yet another embodiment of the present application. Fig. 3a is a cross-sectional view of a condenser 10c according to yet another embodiment of the present application. Fig. 3b is a cross-sectional view of the condenser 10c shown in Fig. 3a along the direction C-C.

The condenser 10c and the oil separation structure 201c in the embodiment shown in Figure 3a-Figure 3b are similar to the condenser 10b and the oil separation structure 201b in the embodiment shown in Figure 2a-Figure 2b respectively, the difference is that the inlet pipe The structure and the setting of the separation plate in the separation chamber. For the purpose of making the description concise, only the differences between the condenser 10c and the condenser 10b will be described below.

As shown in Figures 3a and 3b, the condenser 10c includes an inlet pipe 301c, different from the inlet pipe 301a, the part of the inlet pipe 301c protruding into the separation chamber 203c is a straight pipe, thereby having a downward outlet 303c.

3a and 3b, vertical separation plates 217 and 218 are arranged in the separation chamber 203c of the oil separation structure 201c. The separation plate 212 has a similar arrangement. The vertical separation plate 217 is used to block the upper air flow path in the separation chamber 203c, and the vertical separation plate 218 is used to block the lower air flow path in the separation chamber 203c. Since the oil separation structure 201c has no top wall like the oil separation structure 201b, the vertical separation plate 217 in the embodiment of Fig. 3a-3b extends downward from the top inner surface of the condenser 10c. In other embodiments, different numbers of vertical separation plates 217 and 218 are provided in the separation chamber 203c.

A transverse separation plate 231 is also provided in the separation chamber 203c. The transverse separation plate 231 is arranged transversely to the extension direction of the separation chamber 203c and abuts against the two side walls of the oil separation structure 201c, and the transverse separation plate 231 is located at the corresponding inlet pipe. Below 301c, towards the outlet 303c of the inlet pipe 301c. On one side where the first exhaust port 210.1 and the second exhaust port 210.2 are located, the vertical separation plate 218 is located between the vertical separation plate 217 and the transverse separation plate 231 . Although not shown in the figure, it should be understood that the arrangement of the inlet pipe 301c and the separation plate in this embodiment can also be applied to the embodiments of Fig. 1a-Fig. 1c and Fig. 2a- Fig. 2b, replacing the inlet pipe and separation board layout.

The process of separating lubricating oil and refrigerant gas from the refrigerant entering the oil separation chamber 203c from the inlet pipe 301c on the right side shown in FIG. 3a will be described below with reference to FIG. 3a. It should be understood that the process of separating lubricating oil and refrigerant gas from the refrigerant entering the oil separation chamber 203c from the inlet pipe 301c located on the left side in FIG. 3a is similar.

As shown in FIG. 3 a , the refrigerant flows toward the transverse separation plate 231 after being discharged from the outlet 303 c of the inlet pipe 301 c and hits the transverse separation plate 231 . Through the collision, part of the lubricating oil in the refrigerant is separated, and the separated lubricating oil drops into the oil guide channel 219b at the bottom of the separation chamber 203c. The rest of the refrigerant continues to flow in the separation chamber 203c as the refrigerant after the first impact separation. Part of the refrigerant after the first impact separation flows toward the vertical separation plate 217 and hits the vertical separation plate 217, and the impact causes part of the lubricating oil in this part of the first impact separation refrigerant to be separated and drop to the oil guide channel 219b In this process, the rest of the refrigerant flows toward the first exhaust port 210.1 and the second exhaust port 210.2 as the second impact-separated refrigerant. Since the flow of the refrigerant after the second impact separation is blocked by the vertical separation plate 217, the refrigerant after the second impact separation rotates around the vertical separation plate 217 to change direction to bypass the obstruction of the vertical separation plate 217 when flowing. , the centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the second impact separation to be centrifugally separated, thereby dripping into the oil guide channel 219a, and the rest of the refrigerant as the first centrifugally separated refrigerant passes through the first exhaust port 210.1 and the second exhaust port 210.2 respectively enter the condensation chambers on both sides of the separation chamber 203c for cooling. Part of the refrigerant after the first impact separation flows toward the vertical separation plate 218 and hits the vertical separation plate 218. The impact causes part of the lubricating oil in this part of the first impact separation refrigerant to be separated and drop to the oil guide channel 219b In this process, the rest of the refrigerant flows toward the first exhaust port 210.1 and the second exhaust port 210.2 as the third impact-separated refrigerant. Since the flow of the refrigerant after the third impact separation is blocked by the vertical separation plate 218, the refrigerant after the third impact separation rotates around the vertical separation plate 218 to change direction to bypass the obstruction of the vertical separation plate 218 when flowing. , the centrifugal force generated by the rotation further causes the lubricating oil in the refrigerant after the third impact separation to be centrifugally separated, thereby dripping into the oil guide channel 219b, and the rest of the refrigerant is used as the second centrifugally separated refrigerant through the first exhaust port 210.1 and the second exhaust port 210.2 respectively enter the condensation chambers on both sides of the separation chamber 203c for cooling. In addition, part of the refrigerant after the first impact separation flows toward the end wall 207 and hits the end wall 207, and the impact causes part of the lubricating oil in this part of the first impact separation refrigerant to be separated and drop to the bottom of the separation chamber 203c In the oil guide channel 219b, the rest of the refrigerant flows towards the first exhaust port 210.1 and the second exhaust port 210.2 after being separated by the fourth collision, and further collides at the vertical separation plates 217 and 218. and centrifugal separation. As in the separation chambers 203a and 203b, the lubricating oil is also gravitationally separated during the flow of the refrigerant in the separation chamber 203c towards the first exhaust port 210.1 and the second exhaust port 210.2. In some embodiments, when the distance between the vertical separation plates 217 on both sides of the first exhaust port 210.1 and the second exhaust port 210.2 is relatively close, the refrigerant reaching the first exhaust port 210.1 and the second exhaust port 210.2 A vortex is generated between the two vertical separation plates 217, and the centrifugal force generated by the vortex further causes part of the lubricating oil to be separated and drop into the oil guide channel 219b. As described above, in the separation chamber 203c, the lubricating oil in the refrigerant and the refrigerant gas undergo impact separation, centrifugal separation, and gravity separation. Simultaneously there are such multiple separation ways that the present application provides sufficient oil separation.

Embodiments according to the present application at least have the following technical effects:

1. The oil separation structure used in this application provides multiple separation methods, including impact separation, centrifugal separation and gravity separation, so the oil separation structure of this application can provide sufficient oil separation.

2. Due to the structure of the oil separation structure of the present application and the excellent oil separation effect it provides, the oil separation structure is not required to provide a large separation chamber for oil separation. The vertical separation plate set in the separation chamber of the present application forms a barrier when the refrigerant flows towards the first and second discharge ports, thereby reducing the flow speed of the refrigerant in the separation chamber and ensuring that the refrigerant flies in the separation chamber Sufficient time for complete oil separation. Accordingly, the oil separation structure of the present application is designed to have a small-sized separation chamber. The small size of the oil separation structure of the present application enables most of the condenser cavity to be used as a condensation chamber, thereby improving the heat exchange capacity of the condenser. Specifically, as stated above, the width dimension of the separation chamber shank is designed to be slightly larger than the diameter of the inlet pipe, which makes the shank have a small width. Therefore, in the present application, the oil separation structure only occupies a small portion of the condenser cavity, which enables the condenser cavity to provide a large space for condensation. Therefore, in this application, most of the space of the condenser cavity is occupied by two condensation chambers on both sides of the oil separation structure, so that without increasing the size of the condenser, many condensation pipes can be arranged in the two condensation chambers to Ensure the heat exchange capacity of the condenser. On the contrary, if there is no vertical separation plate in the separation chamber, in order to allow the refrigerant to fly in the separation chamber for a sufficient time to complete the oil separation, the separation chamber needs to be designed with a large size to reduce the flight speed of the refrigerant in it . In this case, since the separation chamber occupies a lot of space in the condenser cavity, only a small amount of the condenser cavity can be used as a condensation chamber to condense the refrigerant gas, thereby reducing the heat exchange capacity of the condenser.

3. This application utilizes the oil separation structure so that the cavity of the condenser includes two condensation chambers located on both sides of the separation chamber, which is beneficial to improve the heat exchange efficiency. Specifically, assuming that the oil separation structure is arranged on one side of the cavity, so that the cavity includes a separation chamber and a single condensation chamber, then along the width direction of the condenser shell, the size of the assumed single condensation chamber is larger than that according to the present invention. The size of either of the two condensation chambers applied. Thus, a greater number of condensation pipes will be arranged in a hypothetical single condensation chamber than in any one of the two condensation chambers according to the present application. This makes it more difficult for the refrigerant gas to be cooled entering the hypothetical single condensing chamber to flow towards the condensing pipe located in the middle of the hypothetical single condensing chamber, and it is more difficult to reach the condensate located in the middle of the hypothetical single condensing chamber. tube, so it is difficult to exchange heat with the cooling fluid in the cooling tube located in the middle of the hypothetical single condensation chamber to achieve cooling. Therefore, if the oil separation structure is arranged on one side of the cavity, so that the cavity includes a separation chamber and a single condensation chamber, the heat exchange efficiency of the condenser will be lost. On the contrary, the oil separation structure of the present application makes the condenser cavity include two condensation chambers located on both sides of the oil separation structure, so that each condensation chamber is respectively provided with a smaller number of condensation pipes, thereby entering each condensation chamber. The cooled refrigerant gas can easily reach the condensing pipes located in the middle of the two condensing chambers, so as to exchange heat with the cooling fluid in these condensing pipes, which is beneficial to the improvement of heat exchange efficiency.

4. When the separation chamber is centrally arranged in the condenser cavity in the width direction of the condenser shell, the two condensation chambers on both sides of the separation chamber have the same size. Therefore, the size of the two condensing chambers along the width direction of the condenser housing will not be too large, so that an appropriate number of condensing pipes are arranged in the two condensing chambers along the width direction of the housing. This further facilitates the refrigerator gas to be cooled entering each condensation chamber to easily reach the condensation pipe located in the middle of each condensation chamber, that is, further facilitates the improvement of heat exchange efficiency.

5. When the inlet pipe is centrally arranged on the top of the shell in the width direction of the condenser shell and the separation chamber is centrally arranged in the condenser cavity in the width direction of the condenser shell, the refrigerant has after entering the separation chamber The maximum flight altitude, so the refrigerant has the longest flight time in the separation chamber, which further facilitates the sufficient separation of lubricating oil in the refrigerant in the separation chamber.

6. The funnel-shaped structure of the separation chamber of the present application enables the refrigerant to have a relatively high flow velocity at the handle of the separation chamber, so as to facilitate the impact separation and centrifugal separation of the lubricating oil by means of the vertical separation plate, while in the separation chamber The mouth has a reduced flow velocity, so that the flight time of the refrigerant in the mouth is increased to facilitate the gravity separation of the lubricating oil. At the same time, in the embodiment where the filter is used together, the reduction of the flow rate of the refrigerant at the mouth of the separation chamber is beneficial to the further capture and separation of the lubricating oil by the filter.

Although the present disclosure has been described in conjunction with the examples of embodiments outlined above, various alternatives, modifications, changes, improvements and/or substantial equivalents, whether known or not, will occur to those having at least ordinary skill in the art may be obvious, either now or in the foreseeable future. In addition, the technical effects and/or technical problems described in this specification are exemplary rather than limiting; therefore, the disclosures in this specification may be used to solve other technical problems and have other technical effects and/or can solve other technical problems . Accordingly, the examples of embodiments of the present disclosure set forth above are intended to be illustrative and not restrictive. Various changes may be made without departing from the spirit or scope of the disclosure. Accordingly, the present disclosure is intended to embrace all known or earlier developed alternatives, modifications, variations, improvements and/or substantial equivalents.

Claims (14)

1. A condenser with built-in oil separation structure, characterized in that: comprising: A housing (101), the housing (101) defines a cavity (102), and the housing (101) is provided with at least one inlet pipe (301a, 301c) for receiving lubricating oil to be condensed refrigerant, the housing (101) includes a length direction, a height direction and a width direction; an oil separation structure (201a, 201b, 201c), the oil separation structure (201a, 201b, 201c) is fixed in the cavity (102), the oil separation structure (201a, 201b, 201c) comprises a separation chamber (203a, 203b, 203c), said at least one inlet pipe (301a, 301c) extends into said separation chamber (203a, 203b, 203c), wherein said separation chamber (203a, 203b, 203c) is configured to the lubricating oil and refrigerant gas in the refrigerant are separated; Wherein, the cavity (102) includes a first condensation chamber (104a, 104b) and a second condensation chamber (105a, 105b) separated by the oil separation structure (201a, 201b, 201c), the first a condensation chamber (104a, 104b) and the second condensation chamber (105a, 105b) are respectively located on both sides of the separation chamber (203a, 203b, 203c) in the width direction of the housing (101), and respectively extending along the length direction of the casing (101); and Wherein, the upper part of the oil separation structure (201a, 201b, 201c) is provided with the first condensation chamber (104a, 104b) and the second condensation chamber (105a, 105b) and the separation chamber (203a , 203b, 203c) fluidly connected first exhaust port (210.1) and second exhaust port (210.2), so that the refrigerant gas separated by the separation chamber (203a, 203b, 203c) can enter the first Condensation is carried out in a condensation chamber (104a, 104b) and the second condensation chamber (105a, 105b), and at least one oil discharge port (214a, 214b) is provided at the bottom of the oil separation structure (201a, 201b, 201c) ), so that the lubricating oil separated by the separation chamber (203a, 203b, 203c) can be discharged from the separation chamber (203a, 203b, 203c). 2. The condenser with built-in oil separation structure according to claim 1, characterized in that: The separation chamber (203a, 203b, 203c) is centrally arranged in the cavity (102) in the width direction of the casing (101). 3. The condenser with built-in oil separation structure according to claim 2, characterized in that: The oil separation structure (201a, 201b, 201c) includes several vertical separation plates (211, 212) arranged at intervals along the length direction of the housing (101) in the separation chamber (203a, 203b, 203c) . The several vertical separation plates (211, 213, 217) are arranged to block the upper fluid passage in the separation chamber (203a, 203b, 203c), at least another part of the several vertical separation plates (212 , 218) arranged to block the lower fluid passage in said separation chamber (203a, 203b, 203c). 4. The condenser with built-in oil separation structure according to claim 3, characterized in that: On one side of the first exhaust port (210.1) and the second exhaust port (210.2), the at least A part of said vertical separation plate (211, 213, 217) is connected with said at least another part of said vertical separation plate (212, 218) blocking a lower fluid passage in said separation chamber (203a, 203b, 203c). ) are arranged alternately. 5. The condenser with built-in oil separation structure according to claim 4, characterized in that: The at least one inlet pipe (301a, 301c) is centrally arranged at the top of the housing (101) in the width direction of the housing (101). 6. The condenser with built-in oil separation structure according to claim 5, characterized in that: A portion of the at least one inlet pipe (301c) protruding into the separation chamber (203c) extends along the height direction of the housing (101); and The oil separation structure (201c) also includes a transverse separation plate (231) located below the at least one inlet pipe (301c). 7. The condenser with built-in oil separation structure according to claim 5, characterized in that: A portion of the at least one inlet pipe (301a) protruding into the separation chamber (203a, 203b) is bent toward a direction away from the first exhaust port (210.1) and the second exhaust port (210.2) Into a curved tube shape. 8. The condenser with built-in oil separation structure according to claim 5, characterized in that: The separation chamber (203a, 203b, 203c) extends along the length direction of the casing (101), and the separation chamber (203a, 203b, 203c) is parallel to the height direction and width of the casing (101). The cross-section of the plane formed by the direction is generally funnel-shaped, so that the separation chamber (203a, 203b, 203c) has a mouth (221a) and a handle (222a), the width dimension of the handle (222a) (W1, W2) is designed slightly larger than the diameter d of said at least one inlet pipe (301a, 301c). 9. The condenser with built-in oil separation structure according to claim 4, characterized in that: The oil separation structure (201a) includes a casing (202a) defining the separation chamber (203a), the casing (202a) including opposite side walls (204, 205) connected to each other, opposite The end walls (206, 207) and the opposite top wall (208) and bottom wall (209a), the top wall (208) abuts against the top inner surface of the housing (101), and the opposite The first exhaust port (210.1) and the second exhaust port (210.2) are respectively provided on the upper part of the side wall (204, 205); and said at least a portion of said vertical separation plate (211 ) blocking an upper fluid passage in said separation chamber (203a) extends from said top wall (208) at least part of the height of said separation chamber (203a), Said at least another part of said vertical separation plate (212) blocking a lower fluid passage in said separation chamber (203a) extends from the bottom of said oil separation structure (201a) to the bottom of said separation chamber (203a) At least part of the height. 10. The condenser with built-in oil separation structure according to claim 4, characterized in that: The oil separation structure (201b, 201c) comprises a housing defining the separation chamber (203b, 203c), the housing comprising opposing side walls (204, 205), opposing end walls (206) connected to each other , 207) and a bottom wall (209b), the tops of the opposite side walls (204, 205) and the opposite end walls (206, 207) abut against the top inner surface of the housing (101), And the upper parts of the opposite side walls (204, 205) are respectively provided with the first exhaust port (210.1) and the second exhaust port (210.2); and Said at least a portion of said vertical separation plate (211, 213, 217) blocking an upper fluid passage in said separation chamber (203b, 203c) exits from the top of said casing (101) of said condenser The inner surface extends at least part of the height of said separation chamber (203b, 203c), said at least another part of said vertical separation plate (212, 218 ) blocking a lower fluid passage in said separation chamber (203b, 203c) ) extends at least part of the height of the separation chamber (203b, 203c) from the bottom of the oil separation structure (201b, 201c). 11. The condenser with built-in oil separation structure according to claim 9 or 10, characterized in that: Said at least another part of said vertical separation plate (212, 218) blocking a lower fluid passage in said separation chamber (203a, 203b, 203c) is spaced a distance from said bottom wall (209a, 209b) to Oil guide passages (219a, 219b) are defined. 12. The condenser with built-in oil separation structure according to claim 9 or 10, characterized in that: The bottom wall (209a) of the oil separation structure (201a) abuts against the bottom inner surface of the housing (101), and the at least one oil discharge port (214a) is arranged on the bottom wall (209a) on; and The condenser includes a first subcooling box (107.1) and a second subcooling box (107.2) located at the bottom of the cavity (102), and the first subcooling box (107.1) and the second subcooling box The boxes (107.2) are respectively located on both sides of the oil separation structure (201a) in the width direction of the housing (101). 13. The condenser with built-in oil separation structure according to claim 9 or 10, characterized in that: The condenser includes a subcooling box (107) arranged at the bottom of the cavity (102), and the bottom wall (209b) of the oil separation structure (201b, 201c) abuts against the subcooling box (107 );and The oil separation structure (201b, 201c) further includes at least one oil storage chamber (215) arranged at the bottom of the oil separation structure (201b, 201c) and communicating with the bottom of the separation chamber (203b, 203c), the At least one oil discharge port (214b) is arranged at the bottom of the corresponding at least one oil storage chamber (215), wherein the at least one oil storage chamber (215) is accommodated in the first condensation chamber (104) and The bottom of one of the second condensation chambers (105). 14. A refrigeration and air conditioning system, characterized in that: The refrigerating and air-conditioning system includes the condenser with built-in oil separation structure according to any one of claims 1-13.

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