CN103487267A - Air conditioning system testing device - Google Patents
Air conditioning system testing device Download PDFInfo
- Publication number
- CN103487267A CN103487267A CN201210191754.0A CN201210191754A CN103487267A CN 103487267 A CN103487267 A CN 103487267A CN 201210191754 A CN201210191754 A CN 201210191754A CN 103487267 A CN103487267 A CN 103487267A
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- Prior art keywords
- air
- conditioning
- proving installation
- valve
- liquid
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 73
- 239000003507 refrigerants Substances 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims description 45
- 241000521257 Hydrops Species 0.000 claims description 17
- 239000011901 water Substances 0.000 claims description 17
- 239000011521 glasses Substances 0.000 claims description 4
- 239000007788 liquids Substances 0.000 abstract description 58
- 239000002826 coolants Substances 0.000 description 31
- 239000003570 air Substances 0.000 description 17
- 238000007906 compression Methods 0.000 description 4
- 239000007789 gases Substances 0.000 description 3
- 230000001276 controlling effects Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 methods Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reactions Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000010521 absorption reactions Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to air-conditioning system simulation test technology, in particular to a kind of air-conditioning system proving installation.
Background technology
Current air-conditioning system, often large because of the variation of ambient temperature scope used or the not good refrigerant evaporation that causes of design is incomplete, or cause compressor to return liquid because of the vapour liquid separator inferior separating effect, cause compressor for a long time, move being with under liquid status continuously.Simultaneously, air-conditioning system starts because the problems such as refrigerant migration cause the compressor hydrops, causes the compressor liquid hammer, and the refrigerant poor lubrication causes compressor damage, breaks down.The testing experiment means with liquid running status performance for air-conditioning system fall behind at present, overlong time, and efficiency is too low, more can't accurately measure and control back liquid measure.
Summary of the invention
The present invention aims to provide a kind of air-conditioning system proving installation, running status that can measures of quantization compressor continuous band liquid, and the condition that provides the compressor hydrops to start, effectively improve testing efficiency, and Measurement accuracy is also controlled the liquid measure of returning of air-conditioning system.
To achieve these goals, according to an aspect of the present invention, provide a kind of air-conditioning system proving installation, the air-conditioning system proving installation comprises decompression valve, refrigerant cooling system, reservoir, flowmeter and the flow control valve connected successively by pipeline.
Further, the refrigerant cooling system comprises the refrigerant refrigeratory that is connected between decompression valve and reservoir, is connected with the refrigerant refrigeratory and forms cooling tower, handpiece Water Chilling Units and the water pump of cooling circuit.
Further, be provided with the first stop valve between reservoir and flowmeter.
Further, the air-conditioning system proving installation also comprises that the hydrops in parallel with the first stop valve drives pipeline.
Further, hydrops drives pipeline to comprise the second stop valve and the fluid filling pump set gradually along the refrigerant flow direction.
Further, hydrops drives pipeline also to comprise the 3rd stop valve that is arranged on the fluid filling pump downstream.
Further, the air-conditioning system proving installation also comprises on the pipeline be arranged between reservoir and flowmeter or is arranged on the liquid-sighting glass on reservoir.
Further, the decompression valve of air-conditioning system proving installation is connected on the condenser and the pipeline between throttling valve of tested air-conditioning system, and the flow control valve of air-conditioning system proving installation is connected to the place, suction port of compressor of tested air-conditioning system.
Further, access place that the air-conditioning system proving installation accesses tested air-conditioning system arranges distribution valve.
Apply technical scheme of the present invention, the air-conditioning system proving installation comprises decompression valve, refrigerant cooling system, reservoir, flowmeter and the flow control valve connected successively by pipeline.The decompression valve of this air-conditioning system proving installation can directly or indirectly be connected with the condenser of air conditioner, thereby can be regulated the temperature and pressure of the liquid coolant that flows out from condenser, make its air pressure and temperature with compressor inlet identical, and by the liquid refrigerant return that regulates to compressor inlet, it is mixed mutually with the air of discharging from evaporator, thereby running status that can measures of quantization compressor continuous band liquid, the condition that provides the compressor hydrops to start, effectively improve testing efficiency, Measurement accuracy is also controlled the liquid measure of returning of air-conditioning system, measure quick and precisely, meet the measurement needs of air-conditioning system under the different compressors state.
The accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 shows the structural representation of air-conditioning system proving installation according to an embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figure 1, according to embodiments of the invention, a kind of air-conditioning system proving installation comprises decompression valve 6, refrigerant cooling system, reservoir 11, the first stop valve 16, flowmeter 14 and the flow control valve 15 connected successively by pipeline.
The refrigerant cooling system comprises refrigerant refrigeratory 7, cooling tower 8, handpiece Water Chilling Units 10 and water pump 9.Refrigerant refrigeratory 7 is connected between decompression valve 6 and reservoir 11, for to flow through the liquid coolant come from decompression valve 6, carrying out the step-down cooling, the liquid coolant that makes from refrigerant refrigeratory 7 to flow out reaches the temperature and pressure of required state, to meet the test needs.Refrigerant refrigeratory 7 forms cooling circuit with cooling tower 8, handpiece Water Chilling Units 10 and water pump 9, and chilled water, from the interior outflow of cooling tower 8, enters water pump 9 after handpiece Water Chilling Units 10 is cooling, and is pumped in refrigerant refrigeratory 7 and participated in cool cycles by water pump 9.The chilled water participated in after cool cycles flows back in handpiece Water Chilling Units 10 from another waterway connector of refrigerant refrigeratory 7, via entering cooling tower 8 after handpiece Water Chilling Units 10 heat exchange, carries out coolingly, again enters afterwards cool cycles.Cooling tower 8 in the refrigerant cooling system, handpiece Water Chilling Units 10 and water pump 9 can be that other cooling unit replaces, for refrigerant refrigeratory 7 in liquid coolant carry out heat exchange, make the liquid coolants in refrigerant refrigeratory 7 reach desired state.
Can be in parallel on the pipeline at the first stop valve 16 two ends a hydrops drive pipeline so that the performance test of the air-conditioning system running status while making this air-conditioning system proving installation can realize the performance test with the liquid running status of air-conditioning system and hydrops frequent starting simultaneously.Hydrops drives pipeline to comprise the second stop valve 16 ', fluid filling pump 13 and the 3rd stop valve 16 set gradually along the flow direction of refrigerant ".The second stop valve 16 ' enters fluid filling pump 13 for controlling liquid coolant, by changing the open and-shut mode of the first stop valve 16 and the second stop valve 16 ', can control the air-conditioning system proving installation with the performance test of liquid running status or carry out the performance test of hydrops frequent starting state.Fluid filling pump 13 provides the liquid transmitting power, for the liquid coolant pumping by reservoir 11, goes out.The 3rd stop valve 16 " be arranged on the downstream of fluid filling pump 13; can prevent that fluid filling pump 13 from pumping rear liquid refrigerant return to fluid filling pump 13 by liquid coolant on the one hand; on the other hand also can be when fluid filling pump 13 is keeped in repair; close the second stop valve 16 ' and the 3rd stop valve 16 ", prevent that liquid coolant from continuing to flow to fluid filling pump 13, facilitates the maintenance of fluid filling pump 13.
For the ease of the mobile of liquid coolant observed, tested better, the air-conditioning system proving installation can also arrange liquid-sighting glass 12 on reservoir 11 or on the pipeline between reservoir 11 and flowmeter 14, or directly on reservoir 11, viewport is set.When the liquid coolant in reservoir 11 flows to flowmeter 14, can observe by liquid-sighting glass 12 or viewport the state of liquid coolant.
Tested air-conditioning system comprises compressor 1, condenser 2, throttling valve 4 and the evaporator 5 that is connected in series successively the formation loop by pipeline, also comprise above-mentioned air-conditioning system proving installation, the decompression valve 6 of air-conditioning system proving installation is connected on the condenser 2 and the pipeline between throttling valve 4 of tested air-conditioning system, and the flow control valve 15 of air-conditioning system proving installation is connected to compressor 1 porch of tested air-conditioning system.
Preferably, access place that accesses tested air-conditioning system at the air-conditioning system proving installation is provided with distribution valve 3, wherein distribution valve 3 is three-way distribution valve, the pressurization variable valve of air-conditioning system proving installation is connected to one of them valve port of three-way distribution valve by pipeline, two other valve port of three-way distribution valve is connected to condenser 2 and throttling valve 4 by pipeline respectively.The flow control valve 15 of air-conditioning system proving installation is connected on the pipeline between compressor 1 and evaporator 5, thereby is circulated with being inhaled in compressor 1 together with gaseous coolant from flowing out evaporator 5.Distribution valve 3 can also be arranged on the place, on-position of the tested air-conditioning system of flow control valve 15 access.
In conjunction with shown in Figure 1, the course of work of air-conditioning system proving installation of the present invention is as follows:
The low-pressure steam that compressor 1 sucks in evaporator 5, discharge after compression the overheated gas of High Temperature High Pressure, then through condenser, 2 heat releases are condensed into saturated or excessively cold liquid coolant, be divided into two-way by three-way distribution valve, one road is to the air-conditioning system proving installation, and another road flows into evaporator 5 after throttling valve 4 expansion throttling step-downs, after the interior heat absorption vaporization of evaporator 5, flows out, sucked and compressed by compressor 1, start new circulation.
After the valve port inflow air-conditioning system proving installation of condenser 2 liquid coolant out by three-way distribution valve, step-down and cooling are carried out in 6 throttlings of liquid coolant process decompression valve, liquid coolant through the step-down cooling is cooled through refrigerant refrigeratory 7 again, the pressure and temperature of the liquid coolant after the step-down cooling is identical with the state of compressor 1 air entry, and the liquid coolant after then processing is stored in reservoir 11.
When the operating mode of test compression machine 1 continuous band liquid operation, need close the second stop valve 16 ' and the 3rd stop valve 16 ", open the first stop valve 16, the liquid coolant amount that then need to suck according to compressor 1 air entry removes to set the flow of cold medium flux meter 14, coolant quantity in cold medium flux meter 14 measuring system pipelines, and the feedback current signal is shown to PID, the proportional control of showing by PID drives the aperture size of flow control valve 15, liquid coolant flow on the main line of air-conditioning system by flow control valve 15 like this, the gas coolant of coming with evaporator 5 mixes, make compressor 1 suck the refrigerant of a certain proportion of gas-liquid mixed, thereby make compressor 1 band liquid operation.Because the flow of the liquid coolant flowed out from the air-conditioning system proving installation is controlled, and the refrigerant state flowed out from evaporator 5 is also controllable, therefore, can control accurately the ratio of gas-liquid mixed refrigerant, make it reach the required gas-liquid refrigerant combined amount of test.By controlling the operational factor of air conditioner and air-conditioning system control device, can make gas coolant and liquid coolant realize different blending ratios, thereby realize the compressor 1 under various gas-liquid mixed states is tested with the performance of liquid running status, meet testing requirements.
When needs test compression machine 1 hydrops frequent starting, at first close air conditioner, make air conditioner belong to the off-duty state.Then close the first stop valve 16 in the air-conditioning system proving installation, open the second stop valve 16 ' and the 3rd stop valve 16 of fluid filling pump 13 front and back "; start fluid filling pump 13 liquid refrigerants in reservoir 11 is delivered in compressor 1 and carries out the hydrops startup; and control by flowmeter 14 the liquid coolant amount entered in compressor 1; then close the second stop valve 16 ' and the 3rd stop valve 16 ", operating air conditioner, the performance of air conditioner when test enters liquid coolant in compressor 1 and moves in air conditioner.So, in the time of just can moving in air conditioner the liquid coolant of difference amount, the performance of air conditioner is tested, and obtains the running status of air conditioner under the different liquid coolant states of measuring, thus the hydrops frequent starting performance of test compression machine 1.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect: the air-conditioning system proving installation comprises decompression valve, refrigerant cooling system, reservoir, flowmeter and the flow control valve connected successively by pipeline.The decompression valve of this air-conditioning system proving installation can directly or indirectly be connected with the condenser of air conditioner, thereby can be regulated the temperature and pressure of the liquid coolant that flows out from condenser, make its air pressure and temperature with compressor inlet identical, and by the liquid refrigerant return that regulates to compressor inlet, it is mixed mutually with the air of discharging from evaporator, thereby running status that can measures of quantization compressor continuous band liquid, the condition that provides the compressor hydrops to start, effectively improve testing efficiency, Measurement accuracy is also controlled the liquid measure of returning of air-conditioning system, measure quick and precisely, meet the measurement needs of air-conditioning system under the different compressors state.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191754.0A CN103487267B (en) | 2012-06-11 | 2012-06-11 | Air-conditioning system test set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191754.0A CN103487267B (en) | 2012-06-11 | 2012-06-11 | Air-conditioning system test set |
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| Publication Number | Publication Date |
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| CN103487267A true CN103487267A (en) | 2014-01-01 |
| CN103487267B CN103487267B (en) | 2016-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372084A (en) * | 2015-10-26 | 2016-03-02 | 广东美的暖通设备有限公司 | Air conditioner performance detection system and method and standard machine weighing method |
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- 2012-06-11 CN CN201210191754.0A patent/CN103487267B/en active IP Right Grant
Patent Citations (7)
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| CN105372084A (en) * | 2015-10-26 | 2016-03-02 | 广东美的暖通设备有限公司 | Air conditioner performance detection system and method and standard machine weighing method |
| CN105372084B (en) * | 2015-10-26 | 2018-05-01 | 广东美的暖通设备有限公司 | A kind of heat pump performance detection method and Standard Machine weighing method |
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| CN103487267B (en) | 2016-06-08 |
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