JPH05659B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a load test device for an air conditioner such as an air dehumidifier, and is used to measure the performance of the air conditioner.

Prior Art Conventional devices of this type include air compressors, air heaters and humidifiers, products under test (air dehumidifiers),
There is a known device that is connected in series with a pressure flow meter or the like, heats and humidifies air introduced from the atmosphere, then guides it to the product under test to dehumidify it, and then releases the dehumidified air to the atmosphere.

This prior art equipment involved testing the performance of an air dehumidifier with air at a given temperature and humidity at atmospheric pressure.

Problems to be Solved by the Invention However, some actual air conditioners are used in areas other than atmospheric pressure;
There was no testing equipment available to test the performance of air conditioners used in these areas.

For this reason, we had no choice but to make a decision based on test results of air conditioners under atmospheric pressure.

Therefore, there is a desire for a device that can test the performance of air conditioners in areas other than atmospheric pressure.

Therefore, in view of the drawbacks of the prior art, the present invention
It is an object of the present invention to provide a device capable of testing the performance of air conditioners such as air dehumidifiers even in areas other than atmospheric pressure.

Means for Solving the Problems That is, the present invention provides a compressed air supply device, a heating and
A closed-loop device that is cyclically connected to the humidifying means and the flow meter, a connection part of the test article provided between the heating means and humidifying means and the flow meter, and an air outlet part of the heating/humidifying means. It consists of a temperature detecting means, a humidity detecting means, and a control device that causes the heating/humidifying means to maintain a predetermined temperature and humidity while detecting through the temperature detecting means, This object is achieved by an air conditioning test apparatus provided with dew point, temperature and pressure sensing means and further with means for measuring the amount of condensate discharged from the air dehumidifier.

Effects In the device according to the present invention, the device is operated after being connected to the connecting portion of the product under test and communicating with the device.

Then, the air released from the blower becomes pressurized air at a predetermined temperature and humidity by the functions of the heating/humidifying means, temperature and humidity detecting means, and control device, and is guided to the product under test (air dehumidifier), where it is Dehumidified. The dehumidified air returns to the blower through the pipe, and at this time the dew point, temperature, and pressure are detected by the detection means, and the amount of air flowing through the pipe is measured by the flow meter.

As a result, it is possible to test how much moisture contained in the air before it enters the product under test is removed per unit time.

Furthermore, by measuring the moisture condensed by the air dehumidifier, it is possible to correct the test results.

The present invention will be explained in detail below according to an embodiment shown in the drawings.

Embodiment The figure schematically shows an apparatus according to an embodiment of the present invention. Reference numeral 1 indicates an air blower for supplying compressed air into a pipe, and the blower 1 has a check valve 2 and a solenoid valve 3. The air heater 4 is connected to a humidifier 5 via a pipe, and the air leaving the humidifier 5 is filtered by a filter device 6 and then passed through a pipe. The air is guided to the connection part 7 of the product under test via a path, and enters the air dehumidifier 8 which is the product under test connected to the connection part 7 . Air dehumidifier 8
The air outlet of the air blower 1 is connected to the air inlet of the air blower 1 through a solenoid valve 9, a low capacity flow meter 10, and a solenoid valve 11. A solenoid valve 12, a high-capacity flowmeter 13, and a solenoid valve 14 are connected in parallel to the solenoid valve 9, low-capacity flowmeter 10, and solenoid valve 11.

A temperature detection means 15 and a humidity detection means 16 are installed in the conduit between the filter device 6 and the connection part 7, and the detection results are inputted to the temperature/humidity control device 18 and recorded in the recording device 20. be done. Temperature t ₁ and humidity r ₁ input to the control device 18
The detection result is compared with the set temperature t ₀ and set humidity r ₀ inputted in advance to the control device 18, and the control device 1
8 functions to control the operation of the heater 4 and humidifier 5 so that the air introduced to the connection part 7 has a constant temperature and humidity.

Furthermore, dew point detection means 22, temperature detection means 24, and pressure detection means 25 are installed at the air outlet of the air dehumidification device 8, respectively, to detect the state of the air after dehumidification, and to record the information in the recording device 20. Data is input (recorded).

The air blower 1 and the solenoid valves 11 and 14 are connected to a regulator 30 via a check valve 26 and a solenoid valve 28, and a pressure gauge 29 is installed between the solenoid valve 28 and the regulator 30.

A heater 34 is connected between the check valve 2 and the solenoid valve 3 and between the heater 4 and the humidifier 5 via a solenoid valve 32. A temperature detection means 36 is installed near the air outlet of the heater 34, and a temperature controller 38 controls the operation of the heater based on the detection result of the temperature detection means.

In the device according to this embodiment with the above-described configuration, pressurized air is supplied from the air blower 1 to the pipe line, first heated to a predetermined temperature by the heater 4, and then heated to a predetermined temperature by the humidifier 5. humidified to a temperature of

The heated and humidified air is once filtered by a filter 6, guided to an air inlet of a test article (air dehumidifier) 8, and dehumidified there.

The air exiting the filter 6 is detected by a temperature detecting means 15 and a humidity detecting means 16 provided in the pipe, and the results are input to a temperature/humidity controller 18, which has been inputted in advance. temperature
Compared to t ₀ and humidity r ₀ , each heater 4 and humidifier 5
control the operation of Also detected temperature
t ₁ and humidity r ₁ are sent to the recording device 20 via the controller 18.
recorded in

Next, the dew point, temperature, and pressure of the dry air coming out from the air outlet of the air dehumidifier 8 are measured near the outlet, and the dew point temperature (T ₀ ), temperature (T ₁ ), and pressure (P ₁ ) are measured.
is recorded on the recording device 20.

The air leaving the air dehumidifier 8 is then sent to the blower 1
Returning to , the flow rate per unit time is measured by the flowmeter 10 or 13, and the flow rate (V ₁ )
is also recorded on the recording device 20.

In addition, the moisture removed by the air dehumidifier 8 is
It becomes a drain and accumulates in the drain trap, but by measuring this amount _W1 , it is possible to measure the difference in performance that cannot be measured with other instruments.

In other words, the temperature and humidity of the heated air supplied to the test item 8 are 30℃ and 80%RH (1 atm conversion, absolute humidity 0.0265Kg/Kg, enthalpy 31Kcal/
Kg), the temperature of the air exiting the air dehumidifier 8 is 15℃, the dew point temperature is 10℃, and the pressure is 6.4Kg/cm ²・G (1
Absolute humidity 0.008Kg/Kg′ in terms of atmospheric pressure, enthalpy
9Kcal/Kg), then the absolute humidity is
The enthalpy decreases by 0.0257Kg/Kg′.
It is estimated that it has decreased by 22Kcal/Kg.

Furthermore, since the flow rate is measured as V ₁ , the amount of moisture removed by the air dehumidifier 8 is
If measured together with W ₁ , absolute humidity can be calculated, and the performance of the air system under pressure, which is inaccurate with conventional hygrometers, can be compared and contrasted.

As described above, unlike conventional devices, the device according to the invention can accurately measure the performance of the product under test from the amount of condensed water, dew point temperature, and flow rate that do not change even under pressure. It becomes possible to provide products such as hot air dehumidifiers.

[Brief explanation of drawings]

The drawing is a schematic diagram showing an embodiment of the device according to the invention. 1... Air blower, 2... Check valve, 3... Solenoid valve, 4
... Heater, 5 ... Humidifier, 6 ... Filter, 7 ... Connection section, 8 ... Test object, 9, 11, 12, 14 ... Solenoid valve, 10, 13 ... Flow meter, 15 ... Temperature detection means, 16 ... Humidity detection means, 18... Temperature/humidity controller, 20... Recorder, 22... Dew point temperature detection means, 2
4...Temperature detection means, 25...Pressure detection means.

Claims (1)

[Claims] 1 Compressed air supply device, heating means and humidifying means,
A closed-loop device connected in circulation to the flowmeter, a connection part of the test article provided between the heating means and humidification means and the flowmeter, and a temperature detection provided at the air outlet of the heating means and humidification means. and a control device for maintaining a predetermined temperature and humidity in the heating means and the humidifying means while detecting the temperature through the temperature detecting means, and provided on the air outlet side of the connection part of the product under test. 1. An air conditioning test device characterized by comprising: means for detecting dew point, temperature and pressure; and means for measuring the amount of drain discharged from an air dehumidifier.