JP2006078132A - Testing device of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing device of an air conditioner capable of evaluating it with an energy less than the conventional art. <P>SOLUTION: An air conditioning circuit comprises a delivery flow channel for connecting the blow-out side of the air conditioner for adjusting the passing air to a predetermined condition to a suction section of a tested machine, and a recovery flow channel communicating with the blow-out section of the tested machine. The air conditioning circuit is disposed in each of the outdoor unit and indoor unit of the tested machine. The recovery flow channel connected to the outdoor unit and indoor unit of the tested machine is connected via a mixer for mixing air circulating in respective passages. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a test apparatus for an air conditioner, and more particularly, to supply air of a predetermined condition to an air conditioner that is a device under test with a configuration having no room structure, and for the air conditioner. The present invention relates to an air conditioner test apparatus capable of evaluating performance and the like.

  Conventionally, in performance evaluation and characteristic evaluation of an air conditioner, in general, operation is confirmed or performance is measured by changing air conditions in various ways. A typical test apparatus is generally called a cyclometric calorimeter, and its general configuration is shown in FIG.

  FIG. 8 is a schematic diagram of a conventional general cyclometric calorimeter. As shown in the figure, an air conditioner as a device under test (in this case, a separation type air conditioner is shown as an example) is insulative, with the indoor unit 1 and the outdoor unit 26 connected to the connecting pipe 52 and operable. The test chambers A and B are arranged.

  Air conditioning of each test room is performed by air conditioners (air adjusting means) 2 and 27 having blower fans 3 and 28, respectively, so that the indoor unit 1 can be sucked by the outdoor unit 26, and the air blown by these units is blown by the air conditioner. It is made to collect from the suction side a, and it is made to become predetermined conditions again with an air conditioner.

  The state of the air sucked into the indoor unit 1 outdoor unit 26 is detected by the sampling devices 10 and 36, for example, the wet and wet bulb temperature is measured by the thermometers 14 and 39, and based on this, the control devices 16 and 41 determine the predetermined conditions. The heat source devices 4 and 29 are controlled so that

  In such a test apparatus, the spaces in the test chambers A and B function as chambers, and show the function of mitigating the influence of fluctuations in the air blown out from the air conditioners 2 and 27. Further, when measuring the performance, the blowout side of the indoor unit 1 is connected to the air volume measuring device 51, and the temperature and humidity of the air blown out from the indoor unit 1 and the air volume can be measured to obtain the capacity and the like.

  On the other hand, in such a test apparatus, the operation condition of the air conditioner is usually fixed, so that a test in a so-called steady state is usually performed. For transient conditions such as a change in the air volume of the air conditioner, Not suitable.

Accordingly, an air enthalpy test apparatus having a configuration as disclosed in Patent Document 1 has been invented. In other words, a bypass is provided to connect the blow-out side b and the suction side a of the air conditioner 2, and an air volume control means such as a damper is disposed in the flow path to follow the transient air volume change of the air conditioner. It is comprised so that it can do (for example, refer patent document 1).
JP-A-61-213648 (FIG. 5)

  However, in the above test apparatus, since air conditions are set for tests performed under various air conditions on the outdoor side and the indoor side, respectively, air conditioning is performed, so that a considerable amount of energy is consumed. It was. Furthermore, for that purpose, a large heat source device was provided for each, so the investment was also large.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art and to provide a test apparatus that is capable of evaluating a test at the same level as that of the prior art with energy saving and resource saving.

  In order to solve the above problems, the air conditioner test apparatus of the present invention is an air conditioner for mixing the recovered airflows with the opposite heats into a recovered airflow that is closer to a predetermined temperature and humidity than before. A mixer is provided in front of the suction port of the machine.

  The air conditioner test apparatus of the present invention can significantly reduce the energy required to bring the test conditions to a predetermined temperature, and can use the energy inside and outside the room to the maximum extent possible. Test equipment can be downsized and investment can be reduced.

  The first invention includes a delivery flow path that communicates a blow-out side of an air conditioner that adjusts a passing air to a predetermined condition and a suction part of the device under test, and a recovery flow path that communicates with a blow-out portion of the device under test. An air-conditioning circuit configured to have an air conditioner is provided in each of the outdoor unit and the indoor unit of the device under test, and the recovery flow channels connected to the outdoor unit and the indoor unit of the device under test are circulated through the respective flow channels. It is an air conditioner test device connected through a mixer that mixes air, and by making this configuration, the energy consumption of the outdoor unit and indoor unit, which are the units under test, is mutually recovered. Therefore, since the operation can be performed with the maximum energy saving, the heat source device of each air adjusting means can be downsized. In addition, since a large test room is not required, the investment amount of the test apparatus can be greatly reduced, and the test apparatus can be easily moved.

  In the second aspect of the invention, in particular, the air collected from each of the outdoor unit and the indoor unit of the unit under test through the collection passage of the first aspect is mixed with both air so that the maximum heat exchange efficiency can be obtained. With this configuration, before the high-temperature recovered air from the outdoor unit of the unit under test and the low-temperature recovered air from the indoor unit of the unit under test are sucked into each air conditioner By mixing them together, the energy of the recovered air is canceled out, so that the operating energy of the air conditioner can be reduced and further energy saving can be achieved.

  According to the third aspect of the invention, the mixing ratio of the second aspect of the invention is adjusted by a wind direction changing plate provided at each recovery passage port. By making this configuration, further energy saving operation can be achieved. .

  In the fourth invention, the heat source device of the air conditioner of the first to third inventions is integrated, and by using this configuration, most of the heating capacity is used for the person who needs the heating capacity, and the cooling capacity. Since most of the cooling capacity can be used for those who need it, the entire heat source device can be downsized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Constituent elements in the figure that have already been described in the conventional form of FIG. 4 are given the same figure numbers and their detailed description is omitted.

  Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram of an air conditioner test apparatus according to Embodiment 1 of the present invention.

The indoor testing apparatus has at least a heat source device 4 such as a heat exchanger, a heating device, and a humidifying device,
A fan 3 for circulating air is provided, and the adjusted air is configured to communicate with the suction side of the indoor unit 1 of the air conditioner, which is a device under test, via the delivery duct 5 and the connection duct 6. Yes.

  On the other hand, the blowout side of the indoor unit 1 is communicated with the air conditioner 2 through the connection duct 8, the recovery duct 9, the mixer 44, and the connection duct 42 of the air conditioner, thereby forming a blower circuit. .

  The air conditioner 2 is connected to the mixer 44 by a connection duct 42 at the suction port, and can collect air under considerably temperature and humidity conditions as compared with the conventional test room, so the heat source device 4 also uses a large amount of energy. You don't have to.

  In addition, in order to control the air of stable air condition to the indoor unit 1 of the device under test, a bypass circulation circuit 7 is provided in parallel to the circulation circuit in the indoor unit 1 of the device under test. A temperature / humidity sensor -14 for detecting the above is provided. Further, a blower fan 10 is provided in order to improve the detectability of the temperature / humidity sensor-14.

  The heat source device 4 is controlled by the temperature / humidity control device 16 in accordance with a signal from the temperature / humidity sensor-14.

  In addition, a temperature sensor 13 is provided for confirming the intake air temperature of the indoor unit 1 of the device under test. Further, in order to make the intake air of the indoor unit 1 of the device under test the same as the atmospheric pressure, A sensor 12 for detecting the pressure of the indoor unit 1 is provided, the rotational speed of the blower fan 11 is controlled from the signal of the control device 15, and the pressure in the connection duct 6 and the pressure of the atmospheric pressure are made equal to each other. Can be made the same as the operation in the normal atmospheric pressure.

  Next, the outdoor side will be described. The outdoor side testing apparatus has at least a heat source device 29 such as a heat exchanger, a heating device, and a humidifying device, and includes a fan 28 for circulating air. It is configured to communicate with the suction side of the outdoor unit 26 of the air conditioner, which is a device under test, via the delivery duct 30 and the connection duct 31.

  On the other hand, the blow-out side of the outdoor unit 26 is communicated with the air conditioner 27 via the connection duct 33, the recovery duct 34, the mixer 44, and the connection duct 43 of the air conditioner, thereby forming a blower circuit. .

  The air conditioner 27 is connected to the mixer 44 by a connection duct 42 at the suction port, and can collect air of temperature and humidity conditions that are considerably advantageous as compared with the conventional test chamber, so that the heat source device 29 also has a large energy. You don't have to use

  Further, in order to control the air under stable air conditions to the outdoor unit 26 of the device under test, a bypass circulation circuit 24 is provided in parallel to the circulation circuit in the outdoor unit 26 of the device under test. A temperature / humidity sensor -39 for detecting the above is provided. Further, a blower fan 36 is provided in order to enhance the detectability of the temperature and humidity sensor 39.

  The heat source device 29 is controlled by the temperature / humidity control device 41 in accordance with a signal from the temperature / humidity sensor-39.

Further, a temperature sensor 38 is provided for confirming the intake air temperature of the outdoor unit 26 of the unit under test. Further, in order to make the intake air of the outdoor unit 26 of the unit under test the same as the atmospheric pressure, A sensor 37 for detecting the pressure of the air is provided and the rotational speed of the blower fan 35 is controlled from the signal of the control device 40 so that the pressure in the connection duct 31 is equal to the pressure of the atmospheric pressure, thereby operating the outdoor unit 26 to be tested. The operation can be performed in the same manner as in normal atmospheric pressure.

  In addition, the conventional experimental apparatus has a large chamber structure, so it is difficult to move easily. However, the present invention eliminates the need for a room structure. If it can be easily moved by attaching wheels or the like, it can be conveniently moved and handled according to the test place.

(Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG. FIG. 2 is a configuration diagram of an air conditioner test apparatus according to Embodiment 2 of the present invention.

  The difference from the first embodiment is that automatic wind direction changing plates 47 and 48 are provided in the mixer in order to optimally distribute the temperature of the suction airflow of the indoor air conditioner 2 and the outdoor air conditioner 27. .

  The air direction change plates 47 and 48 are controlled by information from temperature sensors 45 and 50 provided in connection ducts 42 and 43 connected to suction ports of the air conditioners 2 and 27, respectively. The position is set so that the mixing ratio of each air entering the mixer through the recovery ducts 9 and 34 is changed to an optimum value by changing the angle according to the operating condition of each unit under test. The

  Thereby, the energy of the air blown from the indoor test unit 1 and the outdoor test unit 26 can be utilized.

  Thus, a large energy saving can be achieved by changing the air condition of each air change plate on the suction side of the air conditioner.

(Embodiment 3)
Next, Embodiment 3 will be described with reference to FIG. FIG. 3 is a configuration diagram of an air conditioner test apparatus according to Embodiment 3 of the present invention.

  The difference from the second embodiment is that the heat source device 4 is shared between the indoor side and the outdoor side.

  With this configuration, the required air condition can be accurately controlled, and at the same time, further energy saving can be achieved.

(Embodiment 4)
First, Embodiment 4 of the present invention will be described with reference to FIG. FIG. 4 is a configuration diagram of an air conditioner test apparatus according to Embodiment 4 of the present invention. The configuration of the test apparatus will be described with reference to FIG.

  The test apparatus includes at least an air adjustment function such as a heat exchanger and a humidifier, and a fan 3 for circulating air, and the adjusted air is supplied to the air conditioner that is a device under test via a delivery duct 5. The indoor unit 1 is configured to communicate with the suction side.

  On the other hand, the blowout side of the indoor unit 1 is communicated with the air conditioner 2 through the recovery duct 9, thereby forming a blower circuit. It is preferable that the delivery duct 5 has a chamber 6 and communicates with the suction side of the indoor unit 1 because it serves as a buffer and the supply air is further mixed. Similarly, the recovery duct 9 is communicated with the outlet side of the indoor unit 1 through the chamber 8.

  Here, the recovery duct 9 or the chamber 8 may not be attached in close contact with the blowing side of the indoor unit 1 as shown in the figure.

  This is because, for example, in a test in which only the temperature condition for suction is adjusted, it is sufficient to collect approximately stable air so that the disturbance is reduced on the blowing side.

  If the recovery duct 9 or the delivery duct 5 is provided with air volume detection means (not shown) such as a nozzle or a wind speed sensor to improve performance, the recovery duct 9 or the chamber 8 is sealed against the indoor unit blowout. Should be in close contact with each other.

  The air conditioner 2 includes a temperature / humidity sensor (air condition detecting means) 14 in the delivery duct 5, and the heat source device controller 16 corresponds to the detected dry bulb temperature, wet bulb temperature, or humidity, for example. The operation capacity of the heat source device 4 is controlled so that the temperature and humidity are in a predetermined condition. Further, a differential pressure sensor 12 that can detect the differential pressure between the indoor unit suction side and the atmosphere may be provided, and a control device 11 that controls the air volume of the blower fan 3 may be provided so that the differential pressure becomes zero.

  In this way, by connecting the air conditioner and the indoor unit with a simple duct or the like, it is not necessary to make the entire test apparatus into a room structure, so that the entire test apparatus can be made compact. In addition, since it is not necessary to air-condition the entire room, a predetermined air condition can be created in a short time with a small amount of heat. Therefore, significant energy saving can be achieved.

(Embodiment 5)
Next, Embodiment 5 will be described with reference to FIG. FIG. 5 is a schematic configuration diagram of an air conditioner test apparatus according to Embodiment 5 of the present invention.

  The difference from the fourth embodiment is that it has a bypass flow path 7 configured as if the suction side and the blowout side of the air conditioner 2 are short-circuited.

  The bypass channel 7 is provided with a temperature / humidity sensor 14 for detecting the temperature and humidity of the air passing therethrough. In the present embodiment, the bypass channel can be excluded so as to eliminate the influence of the wind speed of the air flowing through the bypass channel. A branch flow path 7a for sensing branching and merging is provided, and a temperature and humidity sensor 14 is disposed in the flow path.

  The temperature / humidity sensor 14 is also provided with a sensor fan 7b for allowing a substantially constant flow rate to flow.

  In addition, the static pressure control air flow is sucked into the flow path of the delivery duct 5 toward the indoor unit 1 so that the differential pressure between the chamber 6 and the atmosphere detected by the differential pressure sensor 12 can be controlled to a predetermined value. A fan 11 is provided and controlled by a blowing fan control device 15 for suction static pressure control.

  In this case, the suction static pressure control blower fan 11 is provided to control the flow rate of air supplied to the indoor unit. However, the flow rate branched using an opening / closing means such as a damper may be controlled. Good. In such a configuration, the blower fan 3 may be operated at a constant speed.

Next, a procedure for performing a test operation with the test apparatus having such a configuration will be described. First, when the test apparatus is operated, the sensor fan 7b starts operation, and the control device 16 controls the heat source device 4 so as to adjust to the condition of the air to be sent to the indoor unit. At this time, the suction static pressure control blower fan 11 may be stopped.

  Then, when the air state is stabilized in a predetermined state for a while, the suction static pressure control blower fan control device 15 controls the suction static pressure control blower fan 11 to blow air to the indoor unit.

  That is, the air flowing through the bypass flow path 7 is stabilized as the main flow, and the air is branched and blown to the indoor unit. Therefore, stable air can be sent to the indoor unit without taking a large room structure or the like. it can.

  In addition, there is no large heat capacity such as a room structure, and the energy required for stabilization is about the heat capacity of the casing constituting the apparatus, so that the apparatus can be operated with energy saving.

  Further, even if the air flow in the chamber 6 changes due to a change in the operating air volume of the indoor unit, the suction static pressure control blower fan 11 can be adjusted to quickly follow.

  As shown in the figure, if the portion of the indoor unit 1 other than the vicinity of the blowing portion is covered with the chamber 6 communicating with the delivery duct, the indoor unit can be passed through the disturbance of the environmental temperature where the test apparatus is arranged. It is preferable because the influence of heat transfer can be reduced as much as possible.

  Also, a temperature sensor 13 that detects the temperature of the suction portion of the indoor unit 1 is provided, and the temperature detected by the temperature / humidity sensor 14 is corrected with reference to the temperature detected there, so that the indoor unit is originally required. Control may be performed by the control device 16 so that a predetermined temperature and humidity condition is obtained at one suction portion.

(Embodiment 6)
Next, Embodiment 6 will be described with reference to FIG. FIG. 6 is a configuration diagram of an air conditioner test apparatus according to Embodiment 6 of the present invention.

  If an apparatus as shown in the figure is used, the capacity of the air conditioner can be measured as an air enthalpy test apparatus.

  In the present embodiment, the delivery duct 5 is provided with a differential pressure sensor 18 that measures the differential pressure before and after the nozzle 19 and a temperature sensor 17 that detects the temperature of the air passing through the nozzle, and is attached to the recovery duct 9. The chamber 8 is disposed in close contact with the indoor unit outlet, and the recovery duct 9 has a branch flow path for sensing that branches and merges with the recovery duct so that the influence of the wind speed of the air flowing through the recovery duct can be excluded. 7c is provided, and a sampling device 22 including a temperature / humidity sensor 23 and a sensor fan 7d is disposed in the flow path.

  The differential pressure sensor 18 that measures the differential pressure before and after the nozzle 19 and the temperature sensor 17 that detects the temperature of the air passing through the nozzle may be arranged in the recovery duct. A bypass circuit 7c for sampling temperature and humidity is provided in the duct 9 for collecting air from the UUT 1 to the air conditioner 2, and a sensor 23 for detecting temperature and humidity is provided in the bypass circuit 7c. It is possible to measure the air conditioning capability of the device under test by providing the differential pressure sensor 20 that detects the static pressure of the blowout air and providing the blower fan 21 that controls the static pressure.

  As a result, the air conditioner for testing can measure the air conditioning capability of the equipment under test, so that the function can be improved.

(Embodiment 7)
Next, Embodiment 7 will be described with reference to FIG. FIG. 7 is a configuration diagram of an air conditioner test apparatus according to Embodiment 6 of the present invention.

  The feature of this embodiment is that the test apparatus as shown in the above embodiment is attached to each unit in order to simultaneously test the indoor unit 1 and the outdoor unit 26 of the air conditioner. In the recovery ducts 9 and 34 provided on the blowing side of the unit, a total heat exchanger 42a capable of exchanging heat with each other is provided.

  If the air volume is different between the indoor unit and the outdoor unit, the temperature to be blown out is opposite to the air temperature. Therefore, from the viewpoint of the air conditioner, the air is circulated by heat exchange between the absorbed and radiated air. 2 and 27, the energy required for heating or cooling to an air condition of a predetermined condition can be reduced.

Configuration diagram of a test apparatus for an air conditioner showing Embodiment 1 of the present invention The block diagram of the testing apparatus of the air conditioner which shows Embodiment 2 of this invention The block diagram of the testing apparatus of the air conditioner which shows Embodiment 3 of this invention Configuration diagram of a test apparatus for an air conditioner showing Embodiment 4 of the present invention Configuration diagram of a test apparatus for an air conditioner showing Embodiment 5 of the present invention The block diagram of the testing apparatus of the air conditioner which shows Embodiment 6 of this invention Configuration diagram of a test apparatus for an air conditioner showing Embodiment 7 of the present invention Configuration diagram of conventional air conditioner test equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Air conditioner 3 Blower fan 4 Heat source device 5 Delivery duct 6 Connection duct 7 Bypass flow path 8 Chamber 9 Collection | recovery duct 10 Blower fan 11 Blower fan 12 Differential pressure sensor 13 Temperature sensor 14 Temperature / humidity sensor 15 Control apparatus 16 Control Device 26 Outdoor unit 27 Air conditioner 28 Blower fan 29 Heat source device 30 Delivery duct 31 Connection duct 33 Connection duct 34 Recovery duct 35 Blower fan 36 Sampling device 37 Pressure sensor 38 Temperature sensor 39 Thermometer 40 Control device 41 Control device 42 Connection duct 43 Connection duct 44 Mixer 45 Temperature sensor
46 Controller
47 Wind direction change plate 48 Wind direction change plate 49 Controller
50 Temperature sensor
51 Airflow measuring device 52 Connection pipe

Claims (4)

It is configured to have a delivery flow path that communicates the blowing side of the air conditioner that adjusts the passing air to a predetermined condition and the suction part of the EUT, and a recovery flow path that communicates with the blowing part of the EUT. The air conditioner circuit is provided in each of the outdoor unit and the indoor unit of the device under test, and the recovery channel connected to the outdoor unit and the indoor unit of the device under test is mixed with the air flowing through each channel An air conditioner test apparatus characterized by being connected via a cable. The air recovered from each of the outdoor unit and the indoor unit of the UUT through the recovery channel is characterized by adjusting the mixing ratio of both air so that the maximum heat exchange efficiency can be obtained. The air conditioner test apparatus according to claim 1. 3. The air conditioner test apparatus according to claim 2, wherein a mixing ratio of air collected through the collection flow path of each air conditioner is adjusted by a wind direction changing plate provided at each collection flow path port. The air conditioner testing device according to any one of claims 1 to 3, wherein heat source devices of the respective air conditioners are integrated.

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