JP2009156486A - Test environment adjusting device of central air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a test environment adjusting device of a central air conditioner, reducing consumption energy required for forming a test environment and stabilizing the test environment. <P>SOLUTION: The air conditioner 10 as a test object is provided with an intake port 10a on the side and an exhaust port 10b on the top face. Exhaust from the exhaust port 10b of the air conditioner 10 as a test object is guided toward the upside of a laboratory 12 by a cylindrical curtain 60, and diverged to the periphery at a position away above the air conditioner 10 as a test object. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a test environment adjusting device for adjusting a test environment for performing a performance test of a cooling / heating operation of a central air conditioner under a predetermined test environment.

  In buildings such as buildings, a common central air conditioner is installed outdoors, for example, for all or a predetermined number of indoor units, and the central air conditioner performs indoor air conditioning in cooperation with the central air conditioner and indoor units. A method is generally adopted (see, for example, Patent Document 1).

By the way, when performing a performance test of the air conditioning operation of such a central air conditioner, the test room is air-conditioned so as to maintain the test environment under a certain condition defined by the standard, such as the temperature and humidity in the test room. A test room air conditioner is installed.
JP 2006-64259 A

  However, since the central air conditioner is large, a great amount of exhaust heat is generated based on the cooling and heating operation during the test, and the test environment is changed by the exhaust heat. Therefore, if the test room air conditioner is operated so as to offset such a great amount of exhaust heat in order to maintain the test environment, a great amount of energy is consumed.

In addition, if the test environment is biased in the test chamber, the accuracy of the performance test of the central air-conditioning apparatus is reduced. Therefore, it is also required to constantly stabilize the test environment.
The present invention has been made to solve the above-mentioned problems, and its purpose is to test a central air conditioner capable of reducing the energy consumed for forming the test environment and stabilizing the test environment. It is to provide an environmental control device.

  In order to solve the above-mentioned problems, the invention according to claim 1 adjusts the test environment for performing the performance test of the cooling and heating operation of the central air conditioner to be tested in the test chamber in a predetermined test environment. A test environment adjusting device that is detachably connected to the test target air conditioner and that is used in a cooling / heating operation of the test target air conditioner with a primary side of the circulating fluid heat exchanger. A first circulating circuit configured to circulate between, a second circulating fluid configured to circulate heat between the first circulating fluid and the secondary side of the circulating fluid heat exchanger and the air heat exchanger. A circuit for generating cooling and heating air to cancel out exhaust heat generated during the cooling and heating operation of the air conditioner to be tested in the air heat exchanger based on the ambient air and the second circulating fluid. It ’s discharged into the room. The air conditioner to be tested has a substantially rectangular parallelepiped shape, and is provided with a suction port on the side surface and an exhaust port on the top surface, and guides the exhaust from the exhaust port toward the upper side of the test chamber. The gist of the invention is that it includes exhaust guide means that can diverge to the surroundings at a position spaced upward from the air conditioner to be tested.

  In the present invention, the first circulating fluid that is detachably connected to the central air conditioning device to be tested and is used during the cooling and heating operation of the air conditioning device to be tested is circulated between the primary side of the circulating fluid heat exchanger. A circulation circuit is configured, and a second circulation circuit that circulates a second circulating fluid that performs heat exchange with the first circulating fluid on the secondary side of the circulating fluid heat exchanger and the air heat exchanger is configured. The Then, from the air heat exchanger, cool / warm air for canceling the exhaust heat generated during the cooling / heating operation of the air conditioner to be tested is generated based on the ambient air and the second circulating fluid and discharged into the test chamber. That is, when performing the performance test of the cooling / heating operation of the air conditioner to be tested, exhaust heat is generated from the circulating fluid (first circulating fluid) used during the operation in addition to the exhaust heat generated during the operation. The exhaust heat from the circulating fluid (first circulating fluid) is supplied from the circulating fluid heat exchanger to the air heat exchanger through the second circulating fluid, and the air heat exchanger cancels the exhaust heat of the air conditioner under test. This is used to generate cool / warm air to suppress the temperature change in the test chamber due to the exhaust heat of the air conditioner under test. In this way, air conditioning in the test chamber is performed to maintain a predetermined test environment by using a part of the exhaust heat generated by the operation of the air conditioner to be tested, thereby reducing the energy consumption for the air conditioning. It becomes possible. In addition, the test target air conditioner is provided with a suction port on the side surface and an exhaust port on the top surface, and the exhaust guide means guides the exhaust from the exhaust port of the test target air conditioner toward the upper side of the test chamber. It is possible to diverge to the surroundings at a position spaced upward from the air conditioner to be tested. As a result, the direct re-intake of exhaust into the intake port of the air conditioner under test is reduced, and the exhaust is distributed in the test chamber. This can contribute to the stabilization of the test environment in the test room.

  According to a second aspect of the present invention, in the test environment adjusting device for the central air conditioner according to the first aspect, the exhaust guide means surrounds an exhaust port provided in an upper surface portion of the test target air conditioner. The gist is that it is a cylindrical curtain to be installed.

  In the present invention, the exhaust guide means is a cylindrical curtain and is installed so as to surround the periphery of the exhaust port provided in the upper surface portion of the air conditioner to be tested. Thereby, an exhaust guide means can be easily comprised with the cylindrical curtain of the aspect to install.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the energy consumption concerning formation of test environment, the test environment adjustment apparatus of the central air conditioner which can stabilize the test environment can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a test environment adjusting device 11 of a central air conditioner 10 installed in a building such as a building as a central air conditioning system. The test chamber 12 having a substantially cubic box shape is set such that the central air conditioner 10 to be tested for performing the performance test of the cooling and heating operation is installed at the center of the floor, and the air conditioner 10 to be tested can be carried in and out. It can be sealed with. The test room 12 is connected to a test room air conditioner 14 installed in an adjacent machine room 13 through a duct 15. The test room air conditioner 14 performs air conditioning of the test room 12.

  First to fourth air heat exchangers 21 to 24 that perform air conditioning in the test chamber 12 are installed at four corners of the floor in the test chamber 12 (see FIG. 2). These 1st-4th air heat exchangers 21-24 are connected so that it may air-condition using the waste-water heat which arises at the time of the air-conditioning driving | operation test of the air conditioning apparatus 10 to be tested.

  More specifically, in the air conditioner 10 to be tested, a first circulation circuit 25A that circulates circulating water (first circulating fluid) with the primary side of the first plate heat exchanger 26 during the test should be formed. The primary side input and output pipes 27 and 28 extending from the primary side of the first plate heat exchanger 26 are detachably connected. The circulating water discharged from the air conditioner 10 to be tested flows into the first plate heat exchanger 26 through the primary side input pipe 27, and the circulating water after heat exchange with the secondary side is output to the primary side. It is discharged to the air conditioner 10 to be tested through the pipe 28. A cushion tank 29 and a pump 30 are provided on the primary output pipe 28, and the operation of the pump 30 by inverter control and the flow rate of circulating water in the first circulation circuit 25A are adjusted by the cushion tank 29. .

  On the other hand, the secondary side of the first plate heat exchanger 26 circulates antifreeze liquid (second circulating liquid) between the first to fourth air heat exchangers 21 to 24 and the second plate heat exchanger 31. A two-circulation circuit 25B is formed. The secondary side output piping 32 of the first plate heat exchanger 26 is connected to the input piping 34 of each of the first to fourth air heat exchangers 21 to 24 via the three-way valve 33, respectively. The output pipes 35 of the air heat exchangers 21 to 24 are gathered into one and connected to the primary side input pipe 36 of the second plate heat exchanger 31.

  Each output pipe 35 of the first to fourth air heat exchangers 21 to 24 is connected to the three-way valve 33 via a return pipe 37, and a part of the antifreeze liquid output from the output pipe 35 is input to the input pipe 34. It can be re-input to the side. The three-way valve 33 adjusts the return amount of the antifreeze liquid to the input side by the temperature control device 38. The temperature control device 38 has a three-way valve 33 so that the antifreeze liquid temperature in the primary side input pipe 36 of the second plate heat exchanger 31 becomes a set temperature during the cooling operation and the heating operation of the air conditioner 10 to be tested. The amount of antifreeze returned is adjusted. And from the primary side output piping 39 of the 2nd plate type heat exchanger 31, the antifreeze liquid after heat-exchange with the secondary side is discharged | emitted.

  A primary output pipe 39 of the second plate heat exchanger 31 is connected to a secondary input pipe 41 of the first plate heat exchanger 26 via a three-way valve 40. A primary side input pipe 36 of the second plate heat exchanger 31 is connected to the three-way valve 40 via a bypass pipe 42. The three-way valve 40 adjusts the bypass amount of the antifreeze liquid that bypasses the second plate heat exchanger 31 by the temperature control device 43. The temperature control device 43 controls the three-way valve 40 so that the temperature of the antifreeze liquid on the output side of the three-way valve 40 becomes the set temperature during the cooling operation and the heating operation of the air conditioner 10 to be tested, and the bypass amount of the antifreeze liquid Is adjusted.

  A cushion tank 44 and a pump 45 are provided on the secondary input pipe 41 of the first plate heat exchanger 26 located on the output side of the three-way valve 40. The flow rate of the antifreeze liquid in the second circulation circuit 25B is adjusted by the operation of the pump 45 by the inverter control and the cushion tank 44.

  The secondary side of the second plate heat exchanger 31 is connected to a cooling tower 46 installed outdoors and a circulation pipe 47. A pump 48 is provided on the circulation pipe 47, and the flow rate of the circulating water in the circulation pipe 47 is adjusted by the operation of the pump 48 by inverter control.

  In addition to the above, an auxiliary air heat exchanger 50 and a humidifier 51 are installed in the test chamber 12. The auxiliary air heat exchanger 50 is operated in an auxiliary manner with respect to the first to fourth air heat exchangers 21 to 24, and the humidifier 51 sets the humidity in the test chamber 12 required during the performance test. It adjusts so that it may become humidity. Incidentally, the auxiliary air heat exchanger 50 is connected to a heat pump chiller 52 installed outdoors and a circulation pipe 53. A cushion tank 54 and a pump 55 are provided on the circulation pipe 53. The operation of the pump 55 by inverter control and the flow rate of the antifreeze liquid (antifreeze liquid) in the circulation pipe 53 are adjusted by the cushion tank 54.

Next, the operation of the test environment adjustment apparatus 11 configured as described above will be described.
[During cooling operation performance test]
Before performing the cooling operation performance test of the central air conditioner 10 to be tested, first, the test room air conditioning is performed so that the test environment such as temperature and humidity in the test room 12 becomes a test environment defined by Japanese Industrial Standards (JIS). It is adjusted by the device 14. When the test environment is established, the test room air conditioner 14 is stopped, and the cooling operation of the test target air conditioner 10 is performed in the test environment. When the air conditioner 10 to be tested is in a cooling operation, ambient air is sucked from the suction port 10a (see FIGS. 2 and 3) based on the cooling operation, and warm air is discharged from the exhaust port 10b. Thereby, the temperature in the test chamber 12 tends to rise.

  At the same time, the circulating water discharged from the test target air conditioner 10 during the cooling operation is discharged as, for example, 7 ° C. cold water. In the first circulation circuit 25A, the circulating water temperature rises to, for example, 12 ° C. by the heat exchange with the second circulation circuit 25B on the secondary side in the first plate heat exchanger 26 and is returned to the air conditioner 10 to be tested. .

  In the second circulation circuit 25B on the secondary side of the first plate heat exchanger 26, the antifreeze liquid temperature decreased to, for example, 9 ° C. due to heat exchange with the first circulation circuit 25A on the primary side. It is supplied to the exchangers 21-24. The first to fourth air heat exchangers 21 to 24 suck in the ambient air from the suction ports 21a to 24a (see FIG. 2 and FIG. 3) and receive the supply of the antifreeze liquid whose temperature has decreased to generate cold air. It discharges in the test chamber 12 as cold air from 21b-24b. That is, it is offset by the cold air generated by the first to fourth air heat exchangers 21 to 24 that the temperature in the test chamber 12 is going to rise due to the hot air accompanying the cooling operation of the air conditioner 10 to be tested. Each air heat exchanger 21-24 operates to try. In addition, when the cold air produced | generated with the 1st-4th air heat exchangers 21-24 is short with respect to the warm air which arises with the air-conditioning apparatus 10 to be tested, the auxiliary air heat exchanger 50 is operated and the shortage The minutes are compensated.

  The antifreeze discharged from the first to fourth air heat exchangers 21 to 24 rises as the cold air is generated. In this case, since it is not necessary to lower the temperature of the antifreeze liquid, the bypass pipe 42 is conducted based on the operation of the three-way valve 40 so as to bypass the second plate heat exchanger 31, and the air heat exchangers 21 to 24. The antifreeze discharged from the air is set to 14 ° C., for example, and returned to the first plate heat exchanger 26.

  As described above, during the cooling operation performance test, although warm air is generated in the cooling operation of the air conditioner 10 to be tested, the waste heat generated in the cooling operation is cooled by the first to fourth air heat exchangers 21 to 24. Used to generate And the cold air produced | generated by the 1st-4th air heat exchangers 21-24, and the cold air from the small auxiliary air heat exchanger 50 at the time of shortage are added, and the temperature in the test chamber 12 is kept constant with preset temperature. It has come to droop. In addition, since the humidity cannot be controlled by the first to fourth air heat exchangers 21 to 24 and the auxiliary air heat exchanger 50, the humidity in the test chamber 12 is adjusted by the humidifier 51. In the test chamber 12 in which the test environment is adjusted in this way, a cooling operation performance test of the air conditioner 10 to be tested is performed.

[At the time of heating operation performance test]
Similarly, before conducting the heating operation performance test of the central air conditioner 10 to be tested, first, the test environment such as the temperature and humidity in the test chamber 12 is set to the test environment defined by Japanese Industrial Standards (JIS). It is adjusted by the test room air conditioner 14. When the test environment is established, the test room air conditioner 14 is stopped, and the heating operation of the test target air conditioner 10 is performed in the test environment. When the air conditioner 10 to be tested is operated for heating, ambient air is sucked from the suction port 10a (see FIGS. 2 and 3) based on the heating operation, and cold air is discharged from the exhaust port 10b. As a result, the temperature in the test chamber 12 tends to decrease.

  Simultaneously, the circulating water discharged | emitted with the heating operation from the air conditioning apparatus 10 to be tested is discharged | emitted as hot water of 45 degreeC, for example. In the first circulation circuit 25A, the circulating water temperature is reduced to, for example, 40 ° C. by the heat exchange with the second circulation circuit 25B on the secondary side in the first plate heat exchanger 26 and returned to the air conditioner 10 to be tested. .

  In the second circulation circuit 25B on the secondary side of the first plate heat exchanger 26, the antifreeze temperature that has risen to, for example, 43 ° C. due to heat exchange with the first circulation circuit 25A on the primary side is the first to fourth air heat. It is supplied to the exchangers 21-24. The first to fourth air heat exchangers 21 to 24 draw in ambient air from the inlets 21a to 24a (see FIGS. 2 and 3), receive warm antifreeze and supply warm air, The hot air is discharged from 21b to 24b into the test chamber 12. That is, it is offset by the warm air generated by the first to fourth air heat exchangers 21 to 24 that the temperature in the test chamber 12 is about to be lowered by the cold air accompanying the heating operation of the air conditioner 10 to be tested. Each air heat exchanger 21-24 operates to try.

  The antifreeze discharged from the first to fourth air heat exchangers 21 to 24 decreases with the generation of hot air. In this case, the second plate heat exchanger 31 is used to further lower the temperature of the antifreeze liquid, and the antifreeze liquid discharged from each air heat exchanger 21 to 24 passes through the second plate heat exchanger 31. For example, the temperature is set to 38 ° C. and returned to the first plate heat exchanger 26.

  As described above, during the heating operation performance test, although cold air is generated in the heating operation of the air conditioner 10 to be tested, the waste heat generated in the heating operation is hot air in the first to fourth air heat exchangers 21 to 24. Used to generate The temperature inside the test chamber 12 is kept constant at the set temperature by the warm air generated by the first to fourth air heat exchangers 21 to 24. In addition, since humidity cannot be controlled with the first to fourth air heat exchangers 21 to 24, the humidity in the test chamber 12 is adjusted by the humidifier 51. In the test chamber 12 in which the test environment is adjusted in this way, a heating operation performance test of the air conditioner 10 to be tested is performed.

Furthermore, in this embodiment, the device which stabilizes the test environment in the test room 12 is made.
As shown in FIGS. 2 and 3, in the test chamber 12, the central air conditioner 10 to be tested is installed at the center of the floor surface, whereas the first to fourth air heat exchangers 21 to 24 are disposed on the floor surface. It is installed at each corner. Each of the air heat exchangers 21 to 24 is provided with suction ports 21a to 24a on one side of the upper surface portion thereof, and air outlets 21b to 24b are provided on side surfaces on the other side. It is installed so that 24b faces the air heat exchangers 21 to 24 positioned counterclockwise. That is, the test room 12 is configured such that a counterclockwise air flow is generated around the air conditioner 10 to be tested and the room air is stirred, and the test environment (temperature / humidity) in the test room 12 is configured. ).

  Further, in each of the air heat exchangers 21 to 24, the air outlets 21b to 24b are located near the floor surface of the side surface, the suction ports 21a to 24a are located on the upper surface, and in this embodiment, the air conditioner 10 to be tested. Each of the suction ports 21a to 24a and the outlets 21b to 24b is set to have different height positions. As a result, in addition to the air flow generated around the air conditioner 10 to be tested as described above, the air flow further moves in the vertical direction, thereby further stabilizing the test environment in the test chamber 12. It is done.

  Furthermore, as in this embodiment, when the central air conditioner 10 to be tested has a substantially rectangular parallelepiped shape, the suction port 10a is provided on the side surface portion, and the exhaust port 10b is provided on the upper surface portion, A cylindrical curtain 60 surrounding the exhaust port 10b of the air conditioner 10 to be tested is used. The cylindrical curtain 60 is suspended from the ceiling of the test chamber 12 or installed on the upper part of the air conditioner 10 to be tested, and is provided up to about 2/3 the height of the test chamber 12. That is, the exhaust during the cooling / heating operation of the air conditioner 10 to be tested is guided upward by the cylindrical curtain 60 to reduce the direct re-intake of the exhaust into the suction port 10a, and the exhaust enters the test chamber 12. Distributed. This also stabilizes the test environment in the test chamber 12.

Next, characteristic effects of the present embodiment will be described.
(1) In this embodiment, the circulating water (first circulating fluid) that is detachably connected to the test target central air conditioner 10 and is used during the cooling and heating operation of the test target air conditioner 10 is used as the plate heat exchanger 26. The first circulation circuit 25A that circulates between the primary side and the secondary side of the heat exchanger 26 and the first to fourth air heat exchangers 21 to 24 heats the circulating water. A second circulation circuit 25B that circulates the antifreeze liquid (second circulation liquid) to be replaced is configured. And from the air heat exchangers 21-24, the cooling / warming air for canceling the exhaust heat generated at the time of the cooling / heating operation of the air conditioner 10 to be tested is generated based on the ambient air and the antifreeze and discharged into the test chamber 12. The That is, when performing the performance test of the air conditioning operation of the air conditioner 10 to be tested, exhaust heat is generated from the circulating water used during the operation in addition to the exhaust heat generated during the operation. The exhaust heat from the circulating water is supplied from the plate heat exchanger 26 to the air heat exchangers 21 to 24 through antifreeze, and the air heat exchangers 21 to 24 cancel out the exhaust heat of the air conditioner 10 to be tested. The temperature change in the test chamber 12 due to the exhaust heat of the air conditioner 10 to be tested is suppressed by generating cool / warm air. Since the air conditioning in the test chamber 12 for maintaining a predetermined test environment is performed by using a part of the exhaust heat generated by the operation of the air conditioner 10 to be tested in this way, the energy consumed for the air conditioning Can be reduced.

  (2) In the present embodiment, the test target air conditioner 10 is provided with a suction port 10a on the side surface portion and an exhaust port 10b on the upper surface portion, and from the exhaust port 10b of the test target air conditioner 10 by the cylindrical curtain 60. The exhaust air is guided toward the upper side of the test chamber 12 and can be diffused to the periphery at a position spaced upward from the air conditioner 10 to be tested. Therefore, the direct re-intake of the exhaust of the air conditioner 10 to be tested into the suction port 10 a is reduced, and the exhaust is dispersed in the test chamber 12. Thereby, it can contribute to stabilization of the test environment in the test room 12.

  (3) In this embodiment, the cylindrical curtain 60 is installed so that the circumference | surroundings of the exhaust port 10b provided in the upper surface part of the air conditioner 10 to be tested may be enclosed. Thereby, the means which guides the exhaust_gas | exhaustion of the air-conditioning apparatus 10 to be tested with the cylindrical curtain 60 of the aspect to install can be comprised easily.

  (4) In the present embodiment, the test target air conditioner 10 is installed in the center of the floor of the test chamber 12, whereas the cooling and warm air generated by the air heat exchangers 21 to 24 circulates the test target air conditioner 10. Generated as an air stream. This also contributes to the stabilization of the test environment in the test chamber 12 because the room air is agitated.

  (5) Moreover, the cooling / heating air generated by the air heat exchangers 21 to 24 is generated as an air flow that circulates around the air conditioner 10 to be tested while moving in the vertical direction of the test chamber 12. Thereby, since indoor air is stirred also in the up-down direction, it can contribute to the further stabilization of the test environment in the test chamber 12. FIG.

  (6) In this embodiment, four air heat exchangers 21 to 24 are installed, and the direction and height of the inlets 21a to 24a and the outlets 21b to 24b of the air heat exchangers 21 to 24 are set. An air flow is generated. This eliminates the need for a separate means for generating an air flow, thereby reducing the number of devices.

  (7) In the present embodiment, four air heat exchangers 21 to 24 are installed, and the inlets 21a to 24a and the outlets 21b to 24b of the air heat exchangers 21 to 24 are dispersedly arranged in the test chamber 12. The As a result, the exhaust heat generated from the air conditioner 10 to be tested can be efficiently absorbed and the cooling / warming air generated by the air heat exchangers 21 to 24 can be dispersed in the test chamber 12. This can also contribute to the stabilization of the test environment in the test chamber 12.

  (8) Moreover, while the air conditioning apparatus 10 to be tested is installed at the center of the floor surface of the test chamber 12, the air heat exchangers 21 to 24 are arranged at the four corners of the floor surface. As a result, the exhaust heat generated from the air conditioner 10 to be tested can be absorbed in a well-balanced manner, and the cooling / warming air generated by the air heat exchangers 21 to 24 for canceling the exhaust heat is balanced around the air conditioner 10 to be tested. Since it can disperse | distribute well, it can contribute to the further stabilization of the test environment in the test room 12. FIG. By stabilizing the test environment in the test chamber 12 in this way, it is possible to contribute to further reduction of energy consumption and further improve the accuracy of the performance test.

(9) Further, since the four air heat exchangers 21 to 24 are installed, it is possible to use small and inexpensive air heat exchangers 21 to 24.
In addition, you may change embodiment of this invention as follows.

  In the above embodiment, four air heat exchangers 21 to 24 are installed at the four corners of the floor. However, the number of installations and the installation positions are not limited thereto, and may be changed as appropriate. Moreover, although the 1st-4th air heat exchangers 21-24 were installed in the test room 12, these air heat exchangers 21-24 were installed outside the test room 12, and were provided in the wall surface etc. of the test room 12 The suction ports 21a to 24a and the outlets 21b to 24b may be connected by a duct.

  In the above embodiment, if the air heat exchangers 21 to 24 can handle the air conditioning during the test, the second plate heat exchanger 31 and the auxiliary air heat exchanger 50 and the devices associated therewith are omitted. May be.

  -In the said embodiment, the cooling / heating air produced | generated by this air heat exchanger 21-24 by the setting of the direction and height of the inlet ports 21a-24a which the air heat exchangers 21-24 have, and the blower outlets 21b-24b. Although generated as an air flow that goes around the air conditioner 10 to be tested while moving in the vertical direction of the test chamber 12, a means for generating an air flow, such as a blower, may be used separately. Moreover, it is good also as an aspect in which the air flow of one direction does not produce especially in the test chamber 12, for example, a random air flow produces.

  In the above embodiment, the cylindrical curtain 60 is installed on the upper part of the air conditioner 10 to be tested to guide the exhaust of the air conditioner 10 to be tested, but the means for guiding the exhaust is not limited to this, Further, this cylindrical curtain 60 may be omitted.

It is a schematic block diagram which shows the test environment adjustment apparatus of the central air conditioner in this embodiment. It is a top view for demonstrating the structure of a test environment adjustment apparatus. It is a side view for demonstrating the structure of a test environment adjustment apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Central air conditioner, 10a ... Inlet port, 10b ... Exhaust port, 11 ... Test environment adjusting device, 12 ... Test room, 21-24 ... 1st-4th air heat exchanger (air heat exchanger), 25A ... 1st circulation circuit, 25B ... 2nd circulation circuit, 26 ... Plate type heat exchanger (circulation liquid heat exchanger), 60 ... Cylindrical curtain (exhaust guide means).

Claims (2)

A test environment adjusting device that adjusts the test environment in order to perform a performance test of the cooling and heating operation of the central air conditioner to be tested under a predetermined test environment in a test chamber,
A first circulation having a configuration in which the first circulating fluid that is detachably connected to the test target air conditioner is used to circulate between the primary side of the circulating fluid heat exchanger and the primary circulating fluid that is used during the cooling and heating operation of the test target air conditioner. A circuit, and a second circulation circuit configured to circulate a second circulating fluid that performs heat exchange with the first circulating fluid between a secondary side of the circulating fluid heat exchanger and an air heat exchanger, and the air While generating heat based on the ambient air and the second circulating fluid, cool and warm air for canceling the exhaust heat generated during the cooling and heating operation of the air conditioner to be tested in the heat exchanger, and discharging it into the test chamber,
The air conditioner to be tested has a substantially rectangular parallelepiped shape, is provided with a suction port on the side surface and an exhaust port on the top surface, respectively.
A central air conditioner comprising exhaust guide means that guides the exhaust from the exhaust port toward the upper side of the test chamber and allows the air to diverge to the periphery at a position spaced upward from the air conditioner to be tested. Test environment adjustment device. In the test environment adjustment device of the central air conditioner according to claim 1,
The test environment adjusting device for a central air conditioner, wherein the exhaust guide means is a cylindrical curtain installed so as to surround an exhaust port provided in an upper surface portion of the air conditioner to be tested.

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