Uninterruptible power supply device

Abstract

To provide an uninterruptible power supply which enables cooling air to be blown onto a heating element in a housing of the uninterruptible power supply.SOLUTION: An uninterruptible power supply comprises: a housing comprising a front plate having an intake port and a rear plate having an exhaust port; a fan having a motor part and blades and placed near the exhaust port; a first partition plate extending between the front plate and the rear plate and partitioning the inside of the housing into a first space and a second space; a first air channel member defining a first air channel in which the air intake capacity by the fan is concentrated, in a channel from the intake port to the exhaust port in the first space; and a second air channel member defining a second air channel in which the air intake capacity by the fan is concentrated, in a channel from the intake port to the exhaust port in the second space. The motor part faces an edge portion of the first partition plate, and a revolution surface of the blades faces both of the first space and the second space.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to an uninterruptible power supply. [Background technology]

[0002] Patent Document 1 discloses an uninterruptible power supply in which a blower is provided near the front cover and external cooling air is supplied to the inside of the housing of the uninterruptible power supply. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-232792 A Summary of the Invention [Problem to be solved by the invention]

[0004] The uninterruptible power supply of Patent Document 1 has a blower on the front side and supplies external cooling air to the inside of the housing, so it is expected to efficiently cool heat-generating elements (such as switching elements) located near the blower (upstream of the flow path). The inventors of the present invention came up with the idea of ​​applying cooling air of an appropriate volume and temperature to a heat generating element inside the housing of an uninterruptible power supply.

[0005] An object of the present invention is to provide an uninterruptible power supply capable of directing cooling air to a heat generating element inside a housing of the uninterruptible power supply. [Means for solving the problem]

[0006] An uninterruptible power supply according to one embodiment of the present invention comprises a housing having a front panel with an intake port and a rear panel with an exhaust port, a fan having a motor unit and blades and arranged near the exhaust port, a first partition plate extending between the front panel and the rear panel and dividing 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 intake capacity of the fan is concentrated in a flow path 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 of the fan is concentrated in a flow path from the intake port to the exhaust port in the second space, wherein the motor unit faces the end of the first partition plate, and the rotation surface of the blades faces both the first space and the second space. Effect of the Invention

[0007] According to the above aspect, the intake capacity of the fan is increased, and cooling air can be applied to the heat generating element. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view of the uninterruptible power supply. [Diagram 2] FIG. 2 is a rear view of the uninterruptible power supply. [Diagram 3] FIG. 2 is a rear view showing the internal structure of the UPS. [Figure 4] FIG. 2 is a side view showing a first example of the internal structure of the UPS. [Diagram 5] FIG. 4 is a side view showing a second example of the internal structure of the UPS. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The uninterruptible power supply comprises a housing having a front panel with an intake port and a rear panel with an exhaust port, a fan having a motor unit and blades and arranged near the exhaust port, a first partition plate extending between the front panel and the rear panel and dividing 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 intake capacity of the fan is concentrated in a flow path 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 of the fan is concentrated in a flow path from the intake port to the exhaust port in the second space, wherein the motor unit faces the end of the first partition plate, and the rotation surface of the blades faces both the first space and the second space.

[0010] The uninterruptible power supply comprises a housing having a front panel with an intake port and a rear panel with an exhaust port, a fan having a motor unit and blades and arranged near the exhaust port, a first partition plate extending between the front panel and the rear panel and dividing the inside 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, and a DC / AC converter arranged in the other of the first space and the second space, wherein the motor unit faces an end of the first partition plate, and the rotation surface of the blades faces both the first space and the second space.

[0011] According to the above configuration, a flow (flow path) of cooling air from the intake port to the exhaust port is formed by the fan disposed near the exhaust port. A first partition plate that divides the inside of the housing into a first space and a second space is provided between the front plate and the rear plate.

[0012] If two smaller fans were installed to correspond to the first space and the second space respectively, the motor parts of the two fans would block the exhaust port, and the area of ​​the rotating surface of the blades of each fan would be relatively small, making it impossible to increase the intake capacity in the flow paths of each of the first and second spaces.

[0013] However, with the above configuration, the motor section of the fan faces the end of the first partition plate, so the effect that the motor section, which has no suction function, has on the suction capacity of the fan can be reduced. The rotation surface of the fan blade faces both the first space and the second space, and the area of ​​the rotation surface can be made relatively large, so the suction capacity of the flow paths formed in the first space and the second space is high.

[0014] A first wind tunnel in which the intake capacity of the fan is concentrated is defined by a first wind tunnel member in the flow path in the first space, and cooling air can be applied to a heat generating body arranged in the first wind tunnel. Also, a second wind tunnel in which the intake capacity of the fan is concentrated is defined by a second wind tunnel member in the flow path in the second space, and cooling air can be applied to a heat generating body arranged in the second wind tunnel.

[0015] When the AC input power supply is normal, the AC / DC converter converts the AC voltage (e.g., 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 the DC voltage supplied from the AC / DC converter into an AC voltage, and outputs the converted AC voltage to the load. The DC / AC converter outputs a stable AC voltage within a predetermined range in response to fluctuations in the AC voltage of the input power supply. In this way, normally, both the AC / DC converter and the DC / AC converter are in operation and become heat generating elements. By arranging the AC / DC converter in one of the first space and the second space, and arranging the DC / AC converter in the other, the heat generating element can be dispersed and cooling air can be efficiently applied to the heat generating element.

[0016] The uninterruptible power supply may include a DC / DC converter disposed in one of the first space and the second space.

[0017] 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 to the DC / AC converter. That is, of the AC / DC converter and the DC / DC converter, when the input power supply is normal, the AC / DC converter becomes the main heat source, and when the input power supply is abnormal, the DC / DC converter becomes the main heat source. If the DC / DC converter is placed in the space in which the AC / DC converter is placed (one of the first space and the second space), there is less opportunity for both the AC / DC converter and the DC / DC converter to generate heat, and therefore the amount of heat generated in that space can be reduced.

[0018] The uninterruptible power supply may include a second partition plate extending between the front panel and the rear panel and forming a third space within the housing separate from the first space and the second space, and a battery arranged in the third space.

[0019] According to the above configuration, the battery is placed in the third space formed by the second partition plate, thereby preventing the temperature around the battery from increasing due to heating elements in the first and second spaces, thereby extending the life of the battery.

[0020] Hereinafter, an embodiment of an uninterruptible power supply will be described with reference to the drawings.

[0021] In this specification, "vertical placement" refers to a position of the uninterruptible power supply in which the height from the installation surface to the top end is greater than when "horizontal placement". "Horizontal placement" refers to a position of the uninterruptible power supply in which the height from the installation surface to the top end is less than when "vertical placement". The term "vertical direction" means a direction that is approximately perpendicular to the installation surface. In other words, the "vertical direction" may be a direction perpendicular to the installation surface of the uninterruptible power supply, or may be a direction that deviates slightly from the vertical direction but is close to the vertical direction. The term "horizontal direction" refers to a direction that is approximately parallel to the installation surface. In other words, the "horizontal direction" may be a direction that is parallel to the installation surface of the uninterruptible power supply, or may be a direction that deviates slightly from the parallel direction but is close to the parallel direction.

[0022] FIG. 1 is a front view of the uninterruptible power supply 10, and FIG. 2 is a rear view of the uninterruptible power supply 10. Hereinafter, the uninterruptible power supply 10 is also referred to as UPS 10. The UPS 10 accommodates a storage battery (multiple batteries, not shown) therein, and when a commercial power supply fails, the storage battery discharges to supply power to a load for a predetermined time (for example, about 10 minutes). The UPS 10 may not have a built-in storage battery, but may have an external storage battery. An operation display unit 12 including operation buttons and indicators is provided on a front panel 11 of the UPS 10. Alternatively, the operation display unit 12 may be provided at a location other than the front panel 11, or the UPS 10 may be remotely operated and remotely monitored using communication, thereby reducing the functionality of the operation display unit 12 or eliminating it.

[0023] In this embodiment, the front panel 11 is composed of a resin cover 13 and a metal plate 18 (see FIG. 4) disposed adjacent to the inner surface of the resin cover 13. Alternatively, the front panel 11 may be composed of a single plate.

[0024] The resin cover 13 shown in FIG. 1 has many elongated plates (first plate, second plate) that extend in the horizontal direction when the UPS 10 is placed horizontally. The first plate 131 is located on the front side and is arranged at intervals in the vertical direction. The second plate 132 is located slightly behind the first plate 131 (at the back side of the paper surface of FIG. 1) and is arranged at intervals 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 second plate 132 closes the gap between the first plates 131 when viewed from the front). There is a gap between the first plate 131 and the second plate 132, and the gap functions as an air intake. This resin cover 13 has an air intake formed over a wide area (almost the entire area).

[0025] Metal plate 18 (see FIG. 4) arranged adjacent to the inner surface of resin cover 13 has openings 181 (see FIG. 4) that function as air intakes over a wide area, similar to resin cover 13.

[0026] The back plate 14 of the UPS 10 shown in Fig. 2 is provided with four sockets (outlets) 16 for connecting a load. The number of sockets 16 is not limited to four. The back plate 14 is also 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 the exhaust port 15, and the fan 17 is disposed in the vicinity of the exhaust port 15. The back plate 14 and the fan 17 may be in close contact with each other, or there may be a gap between them. In this specification, the direction connecting the front plate 11 (see FIG. 1) and the back plate 14 of the UPS 10 is referred to as the "front-rear direction."

[0027] UPS 10 has a first side plate 21, a second side plate 22, a third side plate 23, and a fourth side plate 24 that connect the respective sides of front plate 11 and rear plate 14 along the front-rear direction. The first side plate 21 and the second side plate 22 are disposed opposite each other, and the third side plate 23 and the fourth side plate 24 are disposed opposite each other. The housing of UPS 10 has the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24 in addition to the metal plate 18 and rear plate 14 described above.

[0028] Fig. 3 is a rear view showing the internal structure of the UPS 10. Fig. 3 shows a state in which the rear panel 14 is removed. The UPS 10 includes a first partition plate 31 that extends in the front-rear direction between the front panel 11 and the rear panel 14 and divides 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 panel 21. The UPS 10 may further include a second partition plate 32 that extends in the front-rear direction between the front panel 11 and the rear panel 14 and divides the inside of the housing into a third space S3 different from the first space S1 and the second space S2. The second partition plate 32 is arranged parallel to the first partition plate 31.

[0029] The fan 17 includes a cylindrical motor unit 171 with a built-in motor, and a plurality of blades 172 fixed to the outer periphery of the motor unit 171. The blades 172 form a rotation surface 173 by rotating. The fan 17 can be attached such that the motor unit 171 faces the end of the first partition plate 31, and the rotation surface 173 of the blades 172 faces both the first space S1 and the second space S2.

[0030] Comparing the outer diameter of the motor section 171 with the radial length of the blades 172, in a small fan, the outer diameter of the motor section 171 is generally the same as or longer than the length of the blades 172, and the proportion of the motor section 171 in the overall size of the fan is large. If two small fans are attached to each of the first space S1 and the second space S2, the motor sections of the two fans will block the exhaust port, and the area of ​​the rotating surface of the fan blades is relatively small, making it impossible to increase the intake capacity in the flow paths of each of the first space S1 and the second space S2.

[0031] On the other hand, the fan 17 of this embodiment is a relatively large fan, and the length of the blades 172 is longer than the outer diameter dimension of the motor section 171, and the proportion of the motor section 171 in the overall size of the fan 17 is small. Since the motor section 171 of the fan 17 faces the end of the first partition plate 31, it is possible to reduce the effect of the motor section 171, which does not have a suction function, on the suction capacity of the fan 17. Since the rotation 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 rotation surface 173 can be made relatively large, the fan 17 has high suction capacity in the flow paths formed in the first space S1 and the second space S2.

[0032] FIG. 4 is a side view showing a first example of the internal structure of the UPS 10. FIG. 4 shows a state in which the third side plate 23 is removed. As shown in FIG. 4, the motor unit 171 faces the end of the first partition plate 31. The rotation surface 173 of the blade 172 faces both the first space S1 and the second space S2. Since the motor unit 171 faces the end of the first partition plate 31, the area of ​​the motor unit 171, which does not have an intake function, facing the first space S1 and the second space S2 in the entire fan 17 is small. In addition, compared to a small fan (for example, two fans attached to the first space S1 and the second space S2, respectively), the fan 17 has a large size (area) of the blade 172, i.e., an area of ​​the rotation surface 173, and therefore has a high intake capacity in the flow path formed in the first space S1 and the second space.

[0033] A flow (flow path) of cooling air is formed from the intake port 181 toward the exhaust port 15 by the fan 17 disposed near the exhaust port 15. Since the first partition plate 31 that divides the inside of the housing into a first space S1 and a second space S2 is provided between the front plate 11 and the rear plate 14, a flow of cooling air (arrow in FIG. 4) from the intake port 181 toward the exhaust port 15 is formed in the first space S1 and the second space S2.

[0034] In the first space S1, an AC / DC converter 41 is disposed as a heat generating body. The AC / DC converter 41 has a switching device, a reactor, a heat sink, etc. In the second space S2, a DC / AC converter 42 is disposed as a heat generating body. The DC / AC converter 42 has a switching device, a reactor, a heat sink, etc. In the third space S3, a battery 44 may be disposed. The third space S3 is not an essential configuration. When the third space S3 is not provided, the battery 44 may be disposed in the first space S1 or the second space S2, or may be disposed outside.

[0035] When the AC input power supply to the UPS 10 is normal, the AC / DC converter 41 converts the AC voltage (e.g., 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 42. The DC / AC converter 42 converts the DC voltage supplied from the AC / DC converter 41 into an AC voltage, and outputs the converted AC voltage to the load. The DC / AC converter 42 outputs a stable AC voltage within a predetermined range in response to fluctuations in the AC voltage of the input power supply. In this way, normally, both the AC / DC converter 41 and the DC / AC converter 42 operate and become heat generating elements. By arranging the AC / DC converter 41 in the first space S1 and the DC / AC converter 42 in the second space S2, the heat generating element can be dispersed between the first space S1 and the second space S2, and cooling air can be efficiently applied to the heat generating element.

[0036] A DC / DC converter 43 may be disposed in the first space S1 in which the AC / DC converter 41 is disposed. When the input power supply is abnormal, the AC / DC converter 41 stops operating (stops generating heat), and instead, the DC / DC converter 43 boosts the DC voltage supplied from the battery 44 and outputs the boosted DC voltage to the DC / AC converter 42. In the first space S1, of the AC / DC converter 41 and the DC / DC converter 43, when the input power supply is normal, the AC / DC converter 41 becomes the main heat source, and when the input power supply is abnormal, the DC / DC converter 43 becomes the main heat source. If the DC / DC converter 43 is disposed in the space in which the AC / DC converter 41 is disposed (one of the first space and the second space), there is little opportunity for both the AC / DC converter 41 and the DC / DC converter 43 to generate heat in the first space S1, and therefore the amount of heat generated in the first space S1 can be reduced.

[0037] In the example of Figure 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. Alternatively, 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.

[0038] By placing the battery 44 in the third space S3 separated by the second partition plate 32, the effects of heat generation from the heating elements in the first space S1 and the second space S2 can be reduced, the temperature around the battery 44 can be prevented from rising, and the life of the battery 44 can be extended.

[0039] Fig. 5 is a side view showing a second example of the internal structure of the UPS 10. Fig. 5 shows a state in which the third side panel 23 has been removed. As shown in Fig. 5, the UPS 10 may be provided with a first wind tunnel member 51 that defines a first wind tunnel in which the intake capacity of the fan 17 is concentrated in a flow path from the intake port 181 to the exhaust port 15 in the first space S1, and may be provided with a second wind tunnel member 52 that defines a second wind tunnel in which the intake capacity of the fan 17 is concentrated in a flow path from the intake port 181 to the exhaust port 15 in the second space S2.

[0040] The AC / DC converter 41 and the DC / DC converter 43 are disposed in the first wind tunnel member 51. The DC / AC converter 42 is disposed in the second wind tunnel member 52. A first wind tunnel in which the intake capacity of the fan 17 is concentrated is defined in the flow path in the first space S1 by the first wind tunnel member 51, and cooling air can be applied to the heat generating body disposed in the first wind tunnel. Also, a second wind tunnel in which the intake capacity of the fan 17 is concentrated is defined in the flow path in the second space S2 by the second wind tunnel member 52, and cooling air can be applied to the heat generating body disposed in the second wind tunnel.

[0041] According to this embodiment, the maximum temperature of the heat generating elements (e.g., switching devices, reactors, etc.) of AC / DC converter 41, DC / AC converter 42, and DC / DC converter 43 can be reduced by approximately 20°C compared to the case where two fans are installed corresponding to each of first space S1 and second space S2. [Explanation of symbols]

[0042] 10 UPS (Uninterruptible power supply) 11 Front plate 12 Operation display section 13 Cover 131 1st board 132 2nd board 14 Back plate 15 Exhaust port 16 Sockets 17 Fan 171 Motor section 172 Feather 173 Surface of Revolution 18 metal plate 181 Opening (intake) 21 1st side plate 22 Second side plate 23 Third side plate 24 4th side plate 31 First partition 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 Wind Tunnel Member

Claims

1. a housing having a front panel with an intake port and a rear panel with an exhaust port; a fan having a motor and blades and disposed near the exhaust port; a first partition plate extending between the front plate and the rear plate and dividing an interior of the housing into a first space and a second space; a first wind tunnel member that defines a first wind tunnel in which an 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 that defines a second wind tunnel in which an intake capacity of the fan is concentrated in a flow path from the intake port to the exhaust port in the second space; A battery; an AC / DC converter that converts an AC voltage of an AC input power supply into a DC voltage when the AC input power supply is normal, and a DC / DC converter that boosts a DC voltage of the battery when the AC input power supply is abnormal, both of which are disposed in either the first space or the second space; Equipped with the motor portion faces an end portion of the first partition plate, The rotation surface of the blade faces both the first space and the second space. Uninterruptible power supply.

2. a housing having a front panel with an intake port and a rear panel with an exhaust port; a fan having a motor and blades and disposed near the exhaust port; a first partition plate extending between the front plate and the rear plate and dividing an interior of the housing into a first space and a second space; A battery; an AC / DC converter that converts an AC voltage of an AC input power supply into a DC voltage when the AC input power supply is normal, and a DC / DC converter that boosts a DC voltage of the battery when the AC input power supply is abnormal, both of which are disposed in either the first space or the second space; Equipped with the motor portion faces an end portion of the first partition plate, The rotation surface of the blade faces both the first space and the second space. Uninterruptible power supply.

3. The fan includes one of the fans.

3. An uninterruptible power supply according to claim 1 or 2.

4. a DC / AC converter disposed in the other of the first space and the second space; 3. An uninterruptible power supply according to claim 1 or 2.

5. a second partition plate extending between the front plate and the rear plate and defining a third space in the housing that is separate from the first space and the second space; The battery disposed in the third space; Equipped with An uninterruptible power supply according to any one of claims 1 to 4.

6. The outer diameter of the blade is longer than the outer diameter of the motor portion. An uninterruptible power supply according to any one of claims 1 to 5.

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