JP5386849B2 - Heat exchange device and heating element storage device using the same - Google Patents

Description

  The present invention relates to a heat exchange device and a heating element storage device using the heat exchange device.

  For example, since a current of several tens of amperes or more flows in a mobile phone base station, it is also expressed as a heating element in a certain point. In other words, cooling is extremely important in order to stabilize the operation. Such a mobile phone base station has the following configuration in order to cool the base station.

  That is, it has a configuration including a cabinet in which a transmitter / receiver serving as a heating element is stored, and a heat exchange device mounted in an opening of the cabinet. And as a structure of the heat exchange apparatus, it became the following structures, for example.

  That is, a main body case having a first intake port for outside air, a first air outlet, a second air inlet for the cabinet and a second air outlet, a first blower for outside air provided in the main body case, and It was the structure provided with the 2nd air blower for cabinet interiors, and the heat exchanger which performs heat exchange with outdoor air and cabinet air in the said main body case (for example, refer patent document 1).

JP-A-10-170176

  In the conventional heat exchanging device, as described above, the air in the cabinet is cooled by heat exchange by passing the air in the cabinet and the outdoor air heated by the heat generated from the transmitter / receiver through the heat exchanger. I was going. However, for example, when installed in a place where the outside air temperature is very high, the heat exchanger must be enlarged to ensure the amount of heat that can be exchanged, resulting in a large apparatus.

  SUMMARY OF THE INVENTION Accordingly, the present invention aims to cool the inside of the cabinet when it is small and a large heat load is generated in the cabinet or when the outside air temperature is high.

In order to achieve this object, the present invention provides a main body case having first and second air inlets and first and second air outlets, and the first air inlet and the first air outlet in the main body case. A first air passage that communicates with the outlet, a second air passage that communicates the second air inlet and the second air outlet in the main body case, and the first and second air passages. A heat exchanger for exchanging heat between the air in the air passage and the air in the second air passage, a first fan interposed in the first air passage, and a second fan interposed in the second air passage A heat pump circuit is provided in the main body case, the air from the first blower is supplied to the condenser of the heat pump circuit, the air from the second blower is supplied to the evaporator, and the first air blow Branches upstream from the inlet to the heat exchanger and heat exchanges to one of the paths after branching The arranged, in the other path to discharge air from the condenser cooling air outlet through the condenser, a first air passage in which branches, the condenser damper provided on the upstream side of the condenser, the condenser The device damper is a heat exchange device provided so that the slit surface when opened is perpendicular to the rotation axis of the first blower, thereby achieving the intended purpose.

As described above, according to the present invention, the main body case having the first and second air inlets, the first and second air outlets, and the first air inlet and the first air outlet are communicated with each other in the main body case. A first air passage, a second air passage in which the second air inlet and the second air outlet are communicated with each other in the main body case, and an air in the first air passage, interposed in the first and second air passages. And a heat exchanger for exchanging heat in the air in the second air passage, a first fan interposed in the first air passage, and a second fan interposed in the second air passage, A heat pump circuit is provided in the main body case, the air from the first blower is supplied to the condenser of the heat pump circuit, the air from the second blower is supplied to the evaporator, and the first air passage is connected to the heat exchanger. Branches upstream from the inlet to the inlet, and a heat exchanger is placed on one of the paths after branching. In the condenser to discharge air from the condenser cooling air outlet via, a first air passage in which branches, the condenser damper provided on the upstream side of the condenser, the condenser damper when open Since it is a heat exchange device provided so that the surface of the slit is orthogonal to the rotation axis of the first blower, it can be cooled even when the heat load in the cabinet is high.

The perspective view which shows the example of installation of one Embodiment of this invention Sectional drawing which shows the normal operation state of the heat exchange apparatus of one Embodiment of this invention. Sectional drawing which shows the driving | running state at the time of external air introduction of the heat exchange apparatus of one Embodiment of this invention. The figure which shows the connection state of the heat exchange unit and heat pump unit of one Embodiment of this invention The figure which shows the connection part of the heat exchange unit and heat pump unit of one Embodiment of this invention The perspective view of the heat pump unit of one Embodiment of this invention Sectional drawing which shows the driving | running state of the heat pump unit of one Embodiment of this invention. Sectional drawing which shows the driving | running state of the heat pump unit of one Embodiment of this invention. Sectional drawing which shows the driving | running state of the heat pump unit of one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, reference numeral 1 denotes a building, and a mobile phone base station 3 is provided on the rooftop 2 thereof. The base station 3 has a box-shaped cabinet 4, a transmitter / receiver 5 (shown in FIGS. 2 and 3) provided in the cabinet 4, and heat exchange provided at the front opening of the cabinet 4 so as to be opened and closed like a door. It is comprised by the apparatus 6 (The closed figure is shown in FIG. 1).

  2 and 3 schematically show a cross section of the heat exchange device 6 in the present embodiment. The heat exchange device 6 includes a first blower chamber 15 in which a first blower 12 for outside air is provided in the main body case 11, a second blower chamber 16 in which a second blower 13 for air in the cabinet 4 is provided, The heat exchanger 14 performs heat exchange between the air in the cabinet 4 and the air in the cabinet 4. The front surface (the left side surface in FIGS. 2 and 3) of the main body case 11 is provided with a first air inlet 7 that sucks in outside air and a first air outlet 8 that blows out the sucked outside air after heat exchange. Yes. Moreover, the back surface (right side surface in FIGS. 2 and 3) of the main body case 11 is provided with a second air inlet 9 for sucking air in the cabinet 4 and a second air outlet 10 for blowing out the air after the heat is exchanged. It has been.

  The first air passage 17 (shaded hatched arrow) is formed so as to connect the first air inlet 7, the heat exchanger 14, and the first air outlet 8. On the other hand, the 2nd ventilation path 18 (open arrow) is formed so that the 2nd inlet port 9, the heat exchanger 14, and the 2nd blower outlet 10 may be connected.

  As shown in FIG. 4, the first blower 12, the second blower 13, and the heat exchanger 14 are integrated into a heat exchange unit 51. A heat pump circuit provided with a condenser 19, an evaporator 20, and a compressor 21 is provided below the heat exchange unit 51. This heat pump circuit is integrally formed as a heat pump unit 52.

  As shown in FIGS. 4 and 5, the heat exchange unit 51 is provided with a branch port 28 on the bottom surface so as to branch from the first air passage 17. The heat pump unit 52 is provided with a communication pipe 30 that connects the condenser communication port 29 and the bottom surface of the heat pump unit 52 on the top surface facing the branch port 28. The bottom surface of the heat exchange unit 51 is provided with an inclination that becomes a downward gradient toward the top opening of the communication pipe 30. The condenser communication port 29 is provided with a condenser damper 23, which controls the supply of air to the condenser 19 by branching the first air passage 17 by opening and closing the condenser damper 23. On the downstream side of the condenser 19, a third outlet 22 serving as a connection port to the outside air is provided. An exhaust damper 24 is provided at the third outlet 22. Further, the second air passage 18 branches to the evaporator 20 before the second air outlet 10, and the branched air is blown into the cabinet 4 from the fourth air outlet 25.

  The operation of this configuration will be described.

  First, the operation | movement at the time of normal heat exchange is demonstrated using FIG. The air in the cabinet 4 warmed by the heating element (the transmitter / receiver 5 in the present embodiment) is sucked into the main body case 11 (second fan chamber 16) by the operation of the second fan 13, and the heat exchanger 14 is blown out again from the second outlet 10 into the cabinet 4. On the other hand, the outside air is sucked into the main body case 11 (first fan chamber 15) by the operation of the first blower 12, and blown out from the first air outlet 8 to the outside air through the heat exchanger 14. In the heat exchanger 14, heat exchange is performed between the warmed air in the cabinet 4 (air passing through the second air passage 18) and cold outside air (air passing through the first air passage 17). As a result, the air in the cabinet 4 is cooled by the outside air by the heat exchanger 14 and again used for cooling the transmitter / receiver 5.

  Next, the case where the inside of the cabinet 4 cannot be cooled only by the capability of the heat exchanger 14 will be described with reference to FIG. That is, when the heat generation amount of the heating element (transmitter / receiver 5) is large, or when the temperature of the outside air is relatively high, the air in the cabinet 4 is not sufficiently cooled by heat exchange with the outside air by the heat exchanger 14. There is a case. In such a case, as shown in FIG. 3, the condenser damper 23 and the exhaust damper 24 are opened, and the outside air is supplied from the first air passage 17 to the condenser 19. At this time, the heat pump circuit is operated by operating the compressor 21, and the refrigerant is cooled by the outside air in the condenser 19. In the evaporator 20, the air branched from the second air passage 18 is cooled by the refrigerant and supplied into the cabinet 4 to cool the inside of the cabinet 4.

  As described above, there is an effect that the air in the cabinet 4 can be cooled by operating the heat pump circuit when the air in the cabinet 4 cannot be cooled only by heat exchange by the heat exchanger 14. Moreover, since it was set as the structure which supplies the external air supplied by the 1st air blower 12 provided in the heat exchange apparatus 6 to the condenser 19, it becomes possible to cool the condenser 19 using the ventilation path | route of the heat exchange apparatus 6. FIG. .

  Further, since the heat exchange unit 51 and the heat pump unit 52 can be separated, when the heat exchanger unit 51 and the heat pump unit 52 are installed in an area where the outside air is not so hot and can be cooled only by the heat exchanger 14, the heat exchange unit 6 is removed. Can be configured. Further, moisture (rainwater or the like) that has entered the first air passage 17 of the heat exchange unit 51 flows toward the communication pipe 30 due to the inclination provided on the bottom surface of the heat exchange unit 51, and passes through the communication pipe 30 to the outside of the apparatus. Will be discharged.

  Further, as shown in FIG. 3, the condenser damper 23 is provided so that the slit surface when opened is orthogonal to the rotation axis of the first blower 12. With such a configuration, the air blown from the first blower 12 is rectified by the condenser damper 23 and supplied to the condenser 19. Although not shown in the drawings, the air flow can be efficiently formed by making the fin surface of the condenser 19 parallel to the slit surface when the condenser damper 23 is opened.

  Further, when the heat pump circuit is operated, that is, when the condenser damper 23 is opened, the amount of air blown by the first blower 12 is made larger than the amount of air blown by the second blower 13, thereby making the heat exchanger 14 The air can also be blown to the condenser 19 side without changing the amount of outside air passing therethrough.

  As shown in FIG. 3, the exhaust damper 24 is provided so as to partition like a partition between the first air inlet 7 and the third air outlet 22 when opened. With such a configuration, it is possible to prevent a shortcut between the first air inlet 7 and the third air outlet 22.

  As shown in FIG. 7, the second air passage 18 branches after passing through the heat exchanger 14, one is supplied to the evaporator 20, and the other is blown into the cabinet 4 from the second outlet 10 as it is. The air supplied to the evaporator 20 is blown out into the cabinet 4 from the fourth outlet 25. An evaporator damper 26 is provided at the branch point of the second air passage 18. The evaporator damper 26 closes the air path to the evaporator 20 side when not operating the heat pump circuit, and opens the air path to the evaporator 20 side when operating the heat pump circuit. A part of 10 is closed. According to such a configuration, when the heat pump circuit is operated, the amount of air passing through the evaporator 20 can be ensured without changing the operating condition of the second blower 13.

  The evaporator damper 26 may be provided at the fourth outlet 25. In this case, the evaporator damper 26 is a slide type, and when the heat pump circuit is not operated, the fourth outlet 25 is closed, and when the heat pump circuit is operated, the fourth outlet 25 is opened and the second outlet 10 is opened. It slides to the side and a part of 2nd blower outlet 10 is closed. In addition, a filter 27 is provided at the fourth outlet 25. The filter 27 has an effect of preventing the condensed water generated in the evaporator 20 from entering the cabinet 4.

  As shown in FIG. 8, in the heat pump unit 52, a condenser chamber 32 that stores the condenser 19 and an evaporator chamber 33 that stores the evaporator 20 are provided. The condenser chamber 32 includes a front chamber 32a on the communication port 29 side and a rear chamber 32b on the third outlet side, and the condenser 19 is provided in the rear chamber 32b. The front chamber 32a and the rear chamber 32b are partitioned by a partition plate 32c. The partition plate 32c is opened when the heat pump circuit is operated. The partition plate 32c is provided with a rotating shaft on the outer side in the wind path bending direction, and when opened, the partition plate 32c is tilted toward the upstream side.

  According to such a configuration, the partition plate 32c serves as a damper when supplying air to the condenser 19, but when opened, it forms a wall outside in the bending direction with respect to the air flow. Since the partition plate 32c is located in the air, the air passing through the condenser 19 flows efficiently.

  Next, control of the heat pump circuit will be described. The operation control of the heat pump circuit, that is, the compressor 21, is controlled (ON / OFF or rotation) so that the temperature of the air at the outlet of the evaporator 20 is higher than the temperature of the air sucked from the first intake port 7. Number control). According to such control, condensation in the evaporator 20 does not occur, and moisture is not sent into the cabinet 4.

  FIG. 9 shows a configuration in which an evaporator 20 a is provided on the upstream side of the condenser 19 separately from the evaporator 20. When the outside air temperature becomes a considerably high temperature, since the high-temperature air is sucked from the first air inlet 7, the refrigerant is not sufficiently cooled by the condenser 19, and as a result, the air passing through the evaporator 20 is sufficient. May not cool down. In such a case, the evaporator 20 a is provided on the upstream side of the condenser 19, and the air supplied into the cabinet 4 can be cooled by supplying the cooled air to the condenser 19. It is not necessary for all the air passing through the condenser 19 to pass through the evaporator 20a, and a part thereof may be used.

  The evaporator 20a can function as a condenser by a refrigerant pipe and a valve.

  As described above, according to the present invention, the main body case having the first and second air inlets, the first and second air outlets, and the first air inlet and the first air outlet are communicated with each other in the main body case. A first air passage, a second air passage in which the second air inlet and the second air outlet are communicated with each other in the main body case, and an air in the first air passage, interposed in the first and second air passages. And a heat exchanger for exchanging heat in the air in the second air passage, a first fan interposed in the first air passage, and a second fan interposed in the second air passage, Since the heat pump circuit is provided in the main body case, the condenser of the heat pump circuit supplies the air from the first fan, and the evaporator supplies the air from the second fan. Cools even when the heat load in the cabinet is high due to a small heat exchanger Door can be. Therefore, for example, it is extremely useful as a cooling facility in a base station of communication equipment or other outdoor equipment.

1 Building 2 Rooftop 3 Base Station 4 Cabinet 5 Transmitter / Receiver 6 Heat Exchanger 7 First Air Intake 8 First Air Outlet 9 Second Air Intake 10 Second Air Outlet 11 Main Body Case 12 First Blower 13 Second Blower 14 Heat exchanger 15 First blower chamber 16 Second blower chamber 17 First blower passage 18 Second blower passage 19 Condenser 20 Evaporator 20a Evaporator 21 Compressor 22 Third outlet 23 Condenser damper 24 Exhaust damper 25 Fourth Air outlet 26 Evaporator damper 27 Filter 28 Branch port 29 Condenser communication port 30 Communication pipe 32 Condenser chamber 32a Front chamber 32b Rear chamber 32c Partition plate 33 Evaporator chamber 51 Heat exchange unit 52 Heat pump unit

Claims (18)

A main body case having first and second air inlets, first and second air outlets, a first air passage in which the first air inlet and the first air outlet are communicated in the main body case, and the main body A second air passage in which the second air inlet and the second air outlet communicate with each other in the case, and the air in the first air passage and the air in the second air passage are interposed in the first and second air passages. A heat exchanger for performing heat exchange, a first blower interposed in the first blower passage, and a second blower interposed in the second blower passage, and providing a heat pump circuit in the main body case The condenser of the heat pump circuit is supplied with the air from the first blower, the evaporator is supplied with the air from the second fan, and the first air passage is located upstream from the inlet to the heat exchanger. Branch and place a heat exchanger in one path after branching, and in the other path, condense through a condenser. A condenser damper is provided on the upstream side of the condenser in the branched first air passage, and air is discharged from the condenser cooling air exhaust port. A heat exchange device provided to be orthogonal to the rotation axis of the blower. The heat exchange device according to claim 1, wherein a surface of the slit of the condenser damper and a surface of the fin of the condenser are provided in parallel. 3. The exhaust gas damper according to claim 1, wherein an exhaust damper is provided at the condenser cooling air exhaust port, and the exhaust damper is provided so as to partition between the first intake port and the condenser cooling air exhaust port when opened. Heat exchange equipment. The heat exchange device according to any one of claims 1 to 3, wherein the first blower has a larger air volume than the second blower. The body case is provided with a fourth air outlet, the second air passage is branched after passing through the heat exchanger, one air blows out from the second air outlet, and the other passes through the evaporator and then passes through the fourth air outlet. The heat exchange device according to any one of claims 1 to 4 , wherein the heat exchange device is configured to blow out. The heat exchanger according to claim 5, wherein an evaporator damper is provided in a path passing through the branched evaporator. The evaporator damper shuts off a path passing through the evaporator, and air from the second air blowing path blows out from the second air outlet, and part of the second air outlet is cut off from the second air duct. The heat exchange device according to claim 6, wherein the air is configured to switch between a case where the air is blown out from the second air outlet and a fourth air outlet. The heat exchange device according to any one of claims 5 to 7 , wherein a filter is provided at the fourth outlet. The heat exchange device according to any one of claims 1 to 8, wherein the first blower, the second blower, and the heat exchanger are provided in an upper portion, and a heat pump circuit is provided in a lower portion. The first blower, the second blower, and the heat exchanger are arranged on the top as one heat exchange unit, and include a condenser chamber containing a condenser, and an evaporator chamber containing an evaporator, The heat exchange device according to claim 9 , wherein a heat pump unit in which the heat pump circuit is unitized is arranged at a lower part. The heat pump unit is provided with a branch port branched from the first air passage on the bottom surface of the heat exchange unit, a communication port communicating with the evaporator chamber on a top surface of the heat pump unit, and a top surface of the heat pump unit The heat exchanger according to claim 10 , wherein a communication pipe that directly connects the bottom and the bottom is provided, and the opening of the branch port is provided so as to cover the communication port and the communication pipe. The heat exchange apparatus according to claim 11 , wherein a communication port damper is provided at a communication port provided on a top surface of the heat pump unit. The heat exchange apparatus according to claim 12 , wherein the bottom surface of the heat exchange unit, the top surface of the heat pump unit, and the communication port damper are provided with an inclination that is lowered toward the top of the communication pipe. A partition plate that divides the condenser chamber into a front chamber on the communication port side and a rear chamber on the third outlet side that exhausts air that has passed through the condenser is provided; the condenser is provided in the rear chamber; The plate is opened so that the front chamber and the rear chamber communicate with each other when the condenser is used, and is perpendicular to the air flow so as to be a guide plate for air flowing from the front chamber to the rear chamber when opened, and The heat exchange device according to claim 13 , wherein a rotating shaft serving as a fulcrum is provided outside the air bending direction, and the partition plate is tilted to the upstream side when opened. The heat exchange device according to any one of claims 1 to 14 , wherein the heat pump circuit is controlled so that the temperature of the air immediately after passing through the evaporator is higher than the temperature of the air sucked at the first intake port. The heat exchange device according to any one of claims 1 to 15 , wherein a part or all of the air passing through the first air passage is passed through a part of the evaporator and then supplied to the condenser. A configuration in which part or all of the air passing through the first air passage is supplied to the condenser after passing through a condenser / evaporator capable of switching between a function of condensing the refrigerant and a function of evaporating the refrigerant. The heat exchange apparatus in any one of 1-15 . A heating element storage device comprising a cabinet that stores a heating element and the heat exchange device according to any one of claims 1 to 17 mounted in an opening of the cabinet.

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