WO2023008077A1 - Uninterruptible power supply device - Google Patents

Abstract

This uninterruptible power supply device comprises a housing including a front plate having an intake port, and a rear plate having an exhaust port, a fan which includes a motor portion and a blade and which is disposed in the vicinity of the exhaust port, a first partitioning plate which extends between the front plate and the rear plate to divide the interior of the housing into a first space and a second space, a first wind tunnel member defining a first wind tunnel in which an intake capacity due to the fan is concentrated, in a flow passage directed from the intake port to the exhaust port in the first space, and a second wind tunnel member defining a second wind tunnel in which the intake capacity due to the fan is concentrated, in a flow passage directed from the intake port to the exhaust port in the second space, wherein the motor portion faces an end portion of the first partitioning plate, and a rotating surface of the blade faces both the first space and the second space.

Description

Uninterruptible power system

The present invention relates to an uninterruptible power supply.

Patent Document 1 discloses an uninterruptible power supply in which an air blower is provided near the front cover to supply outside cooling air to the inside of the uninterruptible power supply housing.

JP-A-2000-232792

The uninterruptible power supply of Patent Document 1 has a fan on the front side and supplies external cooling air to the inside of the housing, so a heating element (switching element, etc.) placed near the fan (upstream of the flow path) ) can be expected to be efficiently cooled.
The inventor of the present invention conceived of the present invention after examining applying cooling air of an appropriate air volume and temperature to a heating element in a housing of an uninterruptible power supply.

An object of the present invention is to provide an uninterruptible power supply that can apply cooling air to a heating element in the housing of the uninterruptible power supply.

An uninterruptible power supply according to an aspect of the present invention includes a housing having a front plate having an air inlet and a rear plate having an air outlet, a motor section, and blades, and is arranged near the air outlet. a fan; a first partition extending between the front plate and the rear plate to divide the inside of the housing into a first space and a second space; a first wind tunnel member defining a first wind tunnel in which the air intake capacity of the fan is concentrated in a flow path directed to the air intake capacity of the fan; and a second wind tunnel member defining a second wind tunnel in which the motor section faces the end of the first partition plate, and the rotating surface of the vane extends between the first space and the second facing both sides of the space.

According to the above aspect, the air intake capacity of the fan is increased, and cooling air can be applied to the heating element.

It is a front view of an uninterruptible power supply. It is a rear view of an uninterruptible power supply. It is a rear view which shows the internal structure of UPS. It is a side view which shows the 1st example of the internal structure of UPS. FIG. 4 is a side view showing a second example of the internal structure of a UPS;

The uninterruptible power supply includes a housing having a front plate having an air inlet and a rear plate having an air outlet, a fan having a motor section and blades, and disposed near the air outlet, and the front plate. A first partition plate extending between the back plate and dividing the interior of the housing into a first space and a second space; A first wind tunnel member defining a first wind tunnel in which the air intake capacity of the fan is concentrated, and a second wind tunnel in which the air intake capacity of the fan is concentrated in a flow path from the intake port to the exhaust port in the second space. wherein the motor section faces the end of the first partition plate, and the rotating surface of the blade faces both the first space and the second space. there is

The uninterruptible power supply includes a housing having a front plate having an air inlet and a rear plate having an air outlet, a fan having a motor section and blades, and disposed near the air outlet, and the front plate. a first partition plate extending between the rear plate and dividing the inside of the housing into a first space and a second space; and an AC/DC converter arranged in one of the first space and the second space. and a DC/AC converter arranged in the other of the first space and the second space, wherein the motor unit faces the end of the first partition plate, and the rotating surface of the blade is the It may face both the first space and the second space.

According to the above configuration, the cooling air flow (flow path) from the intake port to the exhaust port is formed by the fan arranged near the exhaust port. A first partition plate that divides the inside of the housing into a first space and a second space extends between the front plate and the rear plate.

If two smaller fans are attached to correspond to the first space and the second space, respectively, the motor parts of the two fans block the exhaust port, and the area of the rotating surface of the blades of each fan is Due to the relatively small size, it is not possible to increase the intake capacity in the flow paths of the first space and the second space.

However, according to the above configuration, since the motor portion of the fan faces the end portion of the first partition plate, the influence of the motor portion having no air intake function on the air intake capacity of the fan can be reduced. The rotating surface of the blades of the fan faces both the first space and the second space, and the area of the rotating surface can be relatively large. Highly capable.

A first wind tunnel is defined in the flow path in the first space by the first wind tunnel member to concentrate the suction capacity of the fan so that cooling air can be applied to the heating element disposed in the first wind tunnel. . In addition, a second wind tunnel is defined in the flow path in the second space by the second wind tunnel member, and the cooling air is applied to the heating element arranged in the second wind tunnel. can be done.

When the AC input power supply is normal, the AC/DC converter converts the AC voltage (for example, AC 100V, AC 120V, etc.) supplied from the input power supply into a DC voltage, and outputs the converted DC voltage to the DC/AC converter. . The DC/AC converter converts a DC voltage supplied from the AC/DC converter into an AC voltage and outputs the converted AC voltage to a load. A DC/AC converter outputs a stable AC voltage within a predetermined range with respect to fluctuations in the AC voltage of an input power supply. Thus, normally both the AC/DC converter and the DC/AC converter are in operation and become heat generators. By arranging the AC/DC converter in one of the first space and the second space and the DC/AC converter in the other, it is possible to disperse the heating element and efficiently apply the cooling air to the heating element. .

The uninterruptible power supply may include a DC/DC converter arranged in one of the first space and the second space.

When the input power supply is abnormal, the AC/DC converter stops operating (heat generation is reduced or stopped), and instead the DC/DC converter boosts the DC voltage supplied from the battery and outputs the boosted DC voltage. Output to DC/AC converter. That is, of the AC/DC converter and the DC/DC converter, the AC/DC converter is the main heating element when the input power is normal, and the DC/DC converter is the main heating element when the input power is abnormal. becomes. If the DC/DC converter is arranged in the space where the AC/DC converter is arranged (one of the first space and the second space), there is little chance that both the AC/DC converter and the DC/DC converter will generate heat. Therefore, the amount of heat generated in the space can be reduced.

The uninterruptible power supply includes a second partition plate extending between the front plate and the rear plate and forming a third space separate from the first space and the second space in the housing; and a battery arranged in the third space.

According to the above configuration, the battery is arranged in the third space formed by the second partition plate. The service life of the battery can be extended.

An embodiment of an uninterruptible power supply will be described below with reference to the drawings.

In this specification, "vertically placed" means a posture of the uninterruptible power supply in which the height from the installation surface to the upper end is higher than when "horizontally placed". “Landscape placement” means a posture of the uninterruptible power supply in which the height from the installation surface to the upper end is lower than when “vertical placement”.
"Longitudinal direction" means a direction substantially perpendicular to the installation surface. That is, the "vertical direction" may be a direction perpendicular to the installation surface of the uninterruptible power supply, or a direction slightly deviating from the vertical direction but close to the vertical direction.
"Horizontal direction" means a direction substantially parallel to the installation surface. That is, the “horizontal direction” may be a direction parallel to the installation surface of the uninterruptible power supply, or a direction slightly deviating from the parallel direction but close to the parallel direction.

1 is a front view of the uninterruptible power supply 10, and FIG. 2 is a rear view of the uninterruptible power supply 10. FIG. Hereinafter, the uninterruptible power supply 10 is also called UPS10. The UPS 10 contains storage batteries (a plurality of batteries, not shown) therein, and when the commercial power supply fails, the storage batteries discharge and supply power to the load for a predetermined time (for example, about 10 minutes). The UPS 10 may have an external storage battery instead of a built-in storage battery. A front plate 11 of the UPS 10 is provided with an operation display section 12 including operation buttons and indicators. Alternatively, the operation display unit 12 may be provided at a location other than the front plate 11, or the operation display unit 12 may be reduced in function or eliminated by enabling remote operation/remote monitoring of the UPS 10 using communication. good.

In this embodiment, the front plate 11 is composed of a resin cover 13 and a metal plate 18 (see FIG. 4) arranged adjacent to the inner surface thereof. Alternatively, the front plate 11 may consist of a single plate.

The resin cover 13 shown in FIG. 1 has a large number of elongated plates (first plate, second plate) extending in the horizontal direction with the UPS 10 placed horizontally. The first plates 131 are positioned on the front side and spaced apart in the vertical direction. The second plate 132 is located slightly behind the first plate 131 (on the far side in the plane of the paper of FIG. 1) and is spaced apart in the vertical direction. The second plate 132 is arranged so that the inside of the UPS 10 cannot be seen through the gap between the first plates 131 when viewed from the front (the gap between the first plates 131 when viewed from the front is closed by the second plate 132). . There is a gap between the first plate 131 and the second plate 132, and the gap functions as an intake port. The resin cover 13 has an intake port formed over its wide area (almost all over).

The metal plate 18 (see FIG. 4) arranged adjacent to the inner surface of the resin cover 13 has an opening 181 (see FIG. 4) that functions as an air intake over its wide area, similar to the resin cover 13. ) is provided.

The rear plate 14 of the UPS 10 shown in FIG. 2 is provided with four sockets (outlets) 16 for connecting loads. The number of sockets 16 is not limited to four. Further, the back plate 14 is provided with an exhaust port 15 for a fan 17 provided adjacent to the inner surface of the back plate 14 . That is, the back plate 14 has an exhaust port 15 and the fan 17 is arranged near the exhaust port 15 . The rear plate 14 and the fan 17 may be in close contact with each other, or may have a gap.
In this specification, the direction that connects the front panel 11 (see FIG. 1) and the rear panel 14 of the UPS 10 is referred to as the "front-rear direction".

The UPS 10 has a first side plate 21, a second side plate 22, a third side plate 23, and a fourth side plate 24 so as to connect sides of the front plate 11 and the rear plate 14 along the front-rear direction. The first side plate 21 and the second side plate 22 are arranged to face each other, and the third side plate 23 and the fourth side plate 24 are arranged to face each other. The housing of the UPS 10 has a first side plate 21, a second side plate 22, a third side plate 23, and a fourth side plate 24 in addition to the metal plate 18 and the rear plate 14 described above.

FIG. 3 is a rear view showing the internal structure of the UPS 10. FIG. 3 shows the state in which the back plate 14 is removed. The UPS 10 includes a first partition plate 31 extending in the front-rear direction between the front plate 11 and the rear plate 14 to divide the inside of the housing into a first space S1 and a second space S2. The first partition plate 31 is arranged parallel to the first side plate 21 . Further, the UPS 10 has a second partition plate extending in the front-rear direction between the front plate 11 and the rear plate 14 to divide the inside of the housing into a third space S3 different from the first space S1 and the second space S2. 32 may be provided. The second partition plate 32 is arranged parallel to the first partition plate 31 .

The fan 17 includes a cylindrical motor portion 171 containing a motor, and a plurality of blades 172 fixed to the outer periphery of the motor portion 171 . The blade 172 forms a surface of rotation 173 by rotating. The fan 17 can be mounted so that the motor portion 171 faces the end of the first partition plate 31 and the rotating surface 173 of the blade 172 faces both the first space S1 and the second space S2.

Comparing the outer diameter dimension of the motor portion 171 and the radial length of the blades 172 , in a small fan, the outer diameter dimension of the motor portion 171 is generally equal to or longer than the length of the blades 172 . Therefore, the ratio of the motor portion 171 to the size of the entire fan is large. If two small fans are attached to each of the first space S1 and the second space S2, the motors of the two fans block the exhaust port, and the area of the rotating surface of the fan blades is relatively large. Due to the small size, it is not possible to increase the intake capacity of the passages of the first space S1 and the second space S2.

On the other hand, the fan 17 of the present embodiment is a relatively large fan, the length of the blades 172 is longer than the outer diameter of the motor portion 171, and the ratio of the motor portion 171 to the overall size of the fan 17 is small. Since the motor portion 171 of the fan 17 faces the end portion of the first partition plate 31, the influence of the motor portion 171 having no suction function on the suction capacity of the fan 17 can be reduced. The rotating surface 173 of the blades 172 of the fan 17 faces both the first space S1 and the second space S2, and the area of the rotating surface 173 can be relatively large. The air intake capacity of the flow path formed in S2 is high.

FIG. 4 is a side view showing a first example of the internal structure of the UPS 10. FIG. FIG. 4 shows a state in which the third side plate 23 is removed. As shown in FIG. 4 , the motor section 171 faces the end of the first partition plate 31 . A rotating surface 173 of the blade 172 faces both the first space S1 and the second space S2. Since the motor portion 171 faces the end portion of the first partition plate 31, the area of the motor portion 171, which does not have an air intake function, facing the first space S1 and the second space S2 in the entire fan 17 is small. . In addition, the size (area) of the blades 172 of the fan 17, that is, the area of the rotation surface 173, is large compared to a small fan (for example, two fans attached to the first space S1 and the second space S2). Therefore, the suction capacity of the flow paths formed in the first space S1 and the second space is high.

A flow (passage) of cooling air from the intake port 181 toward the exhaust port 15 is formed by the fan 17 arranged near the exhaust port 15 . Since the first partition plate 31 that divides the inside of the housing into the first space S1 and the second space S2 extends between the front plate 11 and the rear plate 14, the cooling air flowing from the intake port 181 to the exhaust port 15 (arrows in FIG. 4) are formed in the first space S1 and the second space S2.

An AC/DC converter 41 as a heating element is arranged in the first space S1. AC/DC converter 41 has a switching device, a reactor, a heat sink, and the like. A DC/AC converter 42 as a heating element is arranged in the second space S2. The DC/AC converter 42 has switching devices, reactors, heat sinks, and the like. A battery 44 may be placed in the third space S3. The third space S3 is not an essential component. If the third space S3 is not provided, the battery 44 may be arranged in the first space S1 or the second space S2, or may be arranged outside.

When the AC input power supply to the UPS 10 is normal, the AC/DC converter 41 converts the AC voltage (for example, AC 100 V, AC 120 V, etc.) supplied from the input power supply to DC voltage, and converts the converted DC voltage to the DC/AC converter. 42. DC/AC converter 42 converts the DC voltage supplied from AC/DC converter 41 into AC voltage, and outputs the converted AC voltage to a load. The DC/AC converter 42 outputs a stable AC voltage within a predetermined range with respect to fluctuations in the AC voltage of the input power supply. In this way, both the AC/DC converter 41 and the DC/AC converter 42 normally operate and become heat generating bodies. By arranging the AC/DC converter 41 in the first space S1 and the DC/AC converter 42 in the second space S2, the heating element is dispersed in the first space S1 and the second space S2, and the heating element cooling air can be efficiently applied to the

The DC/DC converter 43 may be arranged in the first space S1 where the AC/DC converter 41 is arranged. When the input power supply is abnormal, the AC/DC converter 41 stops operating (stops heat generation), and instead, the DC/DC converter 43 boosts the DC voltage supplied from the battery 44, and the boosted DC voltage to the DC/AC converter 42 . In the first space S1, among the AC/DC converter 41 and the DC/DC converter 43, when the input power is normal, the AC/DC converter 41 becomes the main heating element, and when the input power is abnormal, the DC/DC converter The DC converter 43 is the main heating element. If the DC/DC converter 43 is placed in the space (one of the first space and the second space) in which the AC/DC converter 41 is placed, both the AC/DC converter 41 and the DC/DC converter 43 are placed in the first space. Since there is little chance of heat generation in the space S1, the amount of heat generated in the first space S1 can be reduced.

In the example of FIG. 4, the AC/DC converter 41 and the DC/DC converter 43 are arranged in the first space S1, and the DC/AC converter 42 is arranged in the second space S2. The AC/DC converter 41 and the DC/DC converter 43 may be arranged in the second space S2, and the DC/AC converter 42 may be arranged in the first space S1.

By arranging the battery 44 in the third space S3 divided by the second partition plate 32, the influence of the heat generated by the heating elements in the first space S1 and the second space S2 can be reduced, and the temperature around the battery 44 rises. It is possible to suppress the operation of the battery 44 and extend the life of the battery 44 .

FIG. 5 is a side view showing a second example of the internal structure of the UPS 10. FIG. FIG. 5 shows a state in which the third side plate 23 is removed. As shown in FIG. 5, the UPS 10 includes a first wind tunnel member 51 that defines a first wind tunnel in which the suction capacity of the fan 17 is concentrated in the flow path from the intake port 181 to the exhaust port 15 in the first space S1. Alternatively, a second wind tunnel member 52 may be provided that defines a second wind tunnel in which the air intake capacity of the fan 17 is concentrated in the flow path from the air intake port 181 to the exhaust port 15 in the second space S2.

An AC/DC converter 41 and a DC/DC converter 43 are arranged in the first wind tunnel member 51 . A DC/AC converter 42 is arranged in the second wind tunnel member 52 . A first wind tunnel is defined in the flow path in the first space S1 by the first wind tunnel member 51 to concentrate the suction capacity of the fan 17, and the cooling air is applied to the heating element arranged in the first wind tunnel. be able to. In addition, a second wind tunnel is defined in the flow path in the second space S2 by the second wind tunnel member 52 to concentrate the suction capacity of the fan 17. Cooling air is supplied to the heating element arranged in the second wind tunnel. can be guessed.

According to the present embodiment, the AC/DC converter 41, DC/AC converter 42, and DC/DC converter 41, the DC/AC converter 42, and the DC/DC converter are more efficient than when two fans are attached to correspond to the first space S1 and the second space S2, respectively. The maximum temperature of 43 heating elements (eg, switching devices, reactors, etc.) could be lowered by about 20°C.

10 UPS (uninterruptible power supply)
11 front plate 12 operation display unit 13 cover 131 first plate 132 second plate 14 rear plate 15 exhaust port 16 socket 17 fan 171 motor unit 172 blade 173 rotating surface 18 metal plate 181 opening (inlet)
21 first side plate 22 second side plate 23 third side plate 24 fourth side plate 31 first partition plate 32 second partition plate 41 AC/DC converter 42 DC/AC converter 43 DC/DC converter 44 battery 51 first wind tunnel member 52 second 2 wind tunnel components

Claims (5)

a housing having a front plate having an air inlet and a rear plate having an air outlet;
a fan having a motor section and blades and arranged near the exhaust port;
a first partition extending between the front plate and the rear plate to divide the interior of the housing into a first space and a second space;
a first wind tunnel member defining a first wind tunnel in which the air intake capacity of the fan is concentrated in a flow path from the intake port to the exhaust port in the first space;
a second wind tunnel member defining a second wind tunnel in which the air intake capacity of the fan is concentrated in a flow path from the intake port to the exhaust port in the second space,
The motor unit faces an end of the first partition plate,
The rotating surface of the blade faces both the first space and the second space,
Uninterruptible power system. a housing having a front plate having an air inlet and a rear plate having an air outlet;
a fan having a motor section and blades and arranged near the exhaust port;
a first partition extending between the front plate and the rear plate to divide the interior of the housing into a first space and a second space;
an AC/DC converter arranged in one of the first space and the second space;
a DC/AC converter arranged in the other of the first space and the second space,
The motor unit faces an end of the first partition plate,
The rotating surface of the blade faces both the first space and the second space,
Uninterruptible power system. an AC/DC converter arranged in one of the first space and the second space;
a DC/AC converter located in the other of the first space and the second space;
The uninterruptible power supply according to claim 1. A DC/DC converter arranged in one of the first space and the second space,
The uninterruptible power supply according to claim 2 or 3. a second partition plate extending between the front plate and the rear plate and forming a third space in the housing separate from the first space and the second space;
a battery arranged in the third space,
The uninterruptible power supply according to any one of claims 1 to 4.

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