CN203687474U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN203687474U CN203687474U CN201320860636.4U CN201320860636U CN203687474U CN 203687474 U CN203687474 U CN 203687474U CN 201320860636 U CN201320860636 U CN 201320860636U CN 203687474 U CN203687474 U CN 203687474U
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- cylinder
- double
- conditioning system
- lower cylinder
- liquid separator
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Abstract
The utility model provides an air conditioning system which comprises a double-cylinder vary-volume compressor. The double-cylinder vary-volume compressor is provided with an upper cylinder air suction port, a lower cylinder air suction port and an exhaust port; the air conditioning system further comprises a first solenoid valve; one end of the first solenoid valve is connected with the exhaust port of the double-cylinder vary-volume compressor; the other end of the first solenoid valve is respectively connected with a one-way valve and the lower cylinder air suction port of the double-cylinder vary-volume compressor; one end of the one-way valve is connected with a solenoid valve, and the other end of the one-way valve is connected to the inner cavity of a gas-liquid separator; the air conditioning system also comprises a second solenoid valve arranged in a pipeline from the lower cylinder air suction port of the double-cylinder vary-volume compressor to an inlet of the gas-liquid separator. The air conditioning system adopting the technical scheme has the advantages that a drain bypass pipeline of which one path is provided with a solenoid valve is additionally arranged between the lower cylinder air suction port of the double-cylinder vary-volume compressor and the inlet of the gas-liquid separator, and high pressure refrigerants of the lower cylinder air suction side are subjected to pressure relief to the gas-liquid separator, so that the stability of the system with the operation manner switched from single-cylinder operation to double-cylinder operation is improved.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of air-conditioning system.
Background technology
Existing a kind of air-conditioning system as shown in Figure 1, comprise condenser 10, evaporimeter 20, transfiguration frequency-changeable compressor 30, throttling device 40, cross valve 60, magnetic valve 70, check valve 50, wherein transfiguration frequency-changeable compressor 30 is to switch by check valve 50 and the action of magnetic valve 70.In the time that magnetic valve 70 is opened, the high pressure refrigerant of exhaust side is circulated to compressor lower cylinder air entry, makes lower cylinder suction end form high pressure, and transfiguration frequency-changeable compressor 30 is realized single cylinder operation; In the time that magnetic valve 70 cuts out, the low pressure refrigerant of gas-liquid separator is circulated to lower cylinder air entry, makes lower cylinder air entry form low pressure, and transfiguration frequency-changeable compressor switches to twin-tub operation.
The weak point that above-mentioned prior art exists:
(1), in the time that single cylinder operation switches to twin-tub or multi-cylinder operation, closed electromagnetic valve, but due to lower cylinder air entry to the tube connector place of magnetic valve still in high pressure conditions, owing to there being pressure differential, check valve is in cut-off state, the low pressure refrigerant that vapour divides cannot be circulated to lower cylinder, and it is unstable that easy so that single cylinder operation switches to twin-tub runtime system.
(2) when, single cylinder moves, compressor lower cylinder to the tube connector between magnetic valve is high-pressure side, but because refrigerant remains static, lower the temperature along with environment temperature heat exchange, the time, when longer, refrigerant was easily condensed into liquid state, if while now switching to twin-tub operation, liquid refrigerants will flow to lower cylinder, makes lower cylinder cause liquid hammer, brings infringement to compressor.
(3), the problem in aforementioned in order to solve (1), if increase by a capillary is connected to vapour and divides import at the tube connector place of lower cylinder air entry and magnetic valve, when single cylinder operation switches to twin-tub operation, the high pressure refrigerant of lower cylinder air entry divides import by capillary pressure release to vapour, making lower cylinder air entry is low pressure refrigerant, switch and be able to easy success, but because capillary is long-term circulation, therefore circulating refrigerant can reduce, so that heat exchange amount has loss.
Utility model content
The utility model aims to provide a kind of air-conditioning system, carries out easily occurring in the transfer process of compressor single cylinder operation and twin-tub operation the problem of handoff failure to solve air-conditioning system of the prior art.
To achieve these goals, according to an aspect of the present utility model, provide a kind of air-conditioning system, comprised double-cylinder variable-capacity compressor, double-cylinder variable-capacity compressor has upper cylinder air entry, lower cylinder air entry and exhaust outlet; Air-conditioning system also comprises the first magnetic valve, and first magnetic valve one end connects the exhaust outlet of double-cylinder variable-capacity compressor, and the other end connects respectively the lower cylinder air entry of check valve and double-cylinder variable-capacity compressor; One end connected electromagnetic valve of check valve, the inner chamber of other end access gas-liquid separator; Air-conditioning system also comprises, the second magnetic valve is arranged on the lower cylinder air entry that connects double-cylinder variable-capacity compressor to the pipeline of gas-liquid separator import.
Further, also comprise capillary, the setting of connecting with two magnetic valves.
Further, also comprise that temperature sensor is arranged in the pipeline of lower cylinder air entry.
Further, also comprise that high pressure sensor is arranged in the pipeline of exhaust outlet.
Application the technical solution of the utility model, double-cylinder variable-capacity compressor lower cylinder air entry between gas-liquid separator import, increase a road have magnetic valve discharge opeing bypass line connect, by discharge opeing bypass the high pressure refrigerant pressure release of lower cylinder suction side to gas-liquid separator, the stability of system when optimizing single cylinder operation and switching to twin-tub operation.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows transfiguration frequency-changeable compressor air-conditioning system of the prior art;
Fig. 2 shows air-conditioning system of the present utility model; And
Fig. 3 shows the flow chart of the control method of air-conditioning system of the present utility model.
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Shown in Figure 2, the utility model on the basis of existing technology, increasing by a road discharge opeing bypass line in double-cylinder variable-capacity compressor lower cylinder air entry to gas-liquid separator import connects, this discharge opeing bypass line mainly comprises capillary, the second magnetic valve 72, and to detect, condensation temperature T is high, lower cylinder air entry place increases temperature sensor 90 and detects under lower cylinder air entry temperature T as testing tool to increase high pressure sensor 100 at double-cylinder variable-capacity compressor exhaust side.Open under specific circumstances the second magnetic valve 72 of discharge opeing bypass line, to carry out the action of pressure release and discharge opeing.When lower cylinder air entry is during in hydrops state, by automatic detection, the liquid refrigerants of the tube connector of 71 of compressor lower cylinder to the first magnetic valves can be drained into gas-liquid separator.In the time that single cylinder operation switches to twin-tub operation, by discharge opeing bypass the high pressure refrigerant pressure release of lower cylinder suction side to gas-liquid separator, single cylinder operation successful switch to twin-tub is moved, the stability of system while improving switchover operation.
Shown in Figure 2, the utility model air-conditioning system comprises double-cylinder variable-capacity compressor 30 and gas-liquid separator, and double-cylinder variable-capacity compressor 30 is drawn three tunnels: upper cylinder air entry, lower cylinder air entry and exhaust outlet.Double-cylinder variable-capacity compressor 30, the first heat exchanger 10, orifice union 40 and the second heat exchanger 20 connect into loop.Air-conditioning system also comprises cross valve 60, the first magnetic valve 71, check valve 50.First Heat Exchanger 10 and the second heat exchanger 20 are by the selective exhaust outlet that is communicated with double-cylinder variable-capacity compressor 30, the first magnetic valve 71 one end connection double-cylinder variable-capacity compressors 30 of cross valve 60, and the other end connects respectively check valve 50 and lower cylinder air entry; One end of check valve 50 is connected to the pipeline that the first magnetic valve 71 leads to lower cylinder air entry, other end access gas-liquid separator inner chamber, and it is from gas-liquid separator to lower cylinder air entry that the permission of check valve 50 flows to.The utility model increases the branch road of the capillary composition of Liao Yi road the second magnetic valve 72 and series connection with it, is connected between the pipeline of compressor lower cylinder air entry and the pipeline of gas-liquid separator gas-liquid separator import.
In discharge opeing bypass circulation, effect capillaceous is the flow of controlling discharge opeing.Crossing thick too short capillary flow rate can be excessive, causes lower cylinder pressure drop, and insufficient pressure can make single cylinder operation not continue, and is converted to twin-tub operation; Meticulous long capillary flow rate can be too small, causes drain age velocity excessively slow, can not complete discharge opeing action within the formulation time; So discharge opeing bypass circulation needs a moderate capillary.
Shown in Figure 3, the control method of air-conditioning system of the present utility model comprises:
(1) when compressor is in the time that single cylinder moves, and compressor single cylinder exceedes after the t1 time running time, every process t2 time compares under T high with T, if under T≤T height, judge air entry pipeline hydrops under unit, magnetic valve 2 opens and continues to cut out after the t3 time, to reach interval discharge opeing effect.
(2) when compressor moves in single cylinder, and have demand to switch to twin-tub when operation, the second magnetic valve cuts out the first magnetic valve after opening the ts time again, and the first magnetic valve is opened the second closed electromagnetic valve after the t4 time, to reach pressure release effect.
(3) because the hydrops situation of the external environment temperature T W of different chamber is different, the ts time in step (2) is relevant to outdoor environment temperature, is exemplified below: (A, B are preset temperature constant, can determine through experiment.）
A) in the time of TW >=A ℃, ts=t5;
B) in the time of A ℃ of B ℃≤TW <, ts=t6;
C) in the time of B ℃ of TW <, ts=t7.(above t1, t2, t3, t4, t5, t6, t7 are Preset Time, can determine through experiment.）
The utility model is utilization expands cooling system/heating capacity in conjunction with transfiguration technology adjustable range with the twin-tub of vapour liquid separator or frequency-changeable compressor more than twin-tub.The bypass branch road effect of the second magnetic valve and capillary composition is mainly: in the time that the first magnetic valve need to cut out, the second magnetic valve open the pressure of pipeline between lower cylinder air entry and the first magnetic valve is dropped to consistent with low pressure, to guarantee that compressor switches to rapidly twin-tub after the first closed electromagnetic valve.When unit is in the time that single cylinder moves, the high pressure temperature that the temperature that pipeline temperature detector by air entry under compressor detects and high pressure sensor detect can judge whether hydrops of lower air entry, in the time determining hydrops, just opened for second magnetic valve a period of time, can play the effect that liquid hammer occurs while preventing the rear switching of the long-term operation of compressor single cylinder twin-tub.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. an air-conditioning system, comprises double-cylinder variable-capacity compressor (30), and described double-cylinder variable-capacity compressor (30) has upper cylinder air entry, lower cylinder air entry and exhaust outlet; Described air-conditioning system also comprises the first magnetic valve (71), described the first magnetic valve (71) one end connects the exhaust outlet of described double-cylinder variable-capacity compressor (30), and the other end connects respectively the lower cylinder air entry of check valve (50) and described double-cylinder variable-capacity compressor (30); One end of described check valve (50) connects described magnetic valve (70), the inner chamber of other end access gas-liquid separator;
It is characterized in that, described air-conditioning system also comprises, the second magnetic valve (72) is arranged on the lower cylinder air entry that connects described double-cylinder variable-capacity compressor (30) to the pipeline of gas-liquid separator import.
2. air-conditioning system according to claim 1, is characterized in that, also comprises capillary, the setting of connecting with described two magnetic valves (72).
3. air-conditioning system according to claim 1, is characterized in that, also comprises, temperature sensor (90), is arranged in the pipeline of described lower cylinder air entry.
4. air-conditioning system according to claim 1, is characterized in that, also comprises, high pressure sensor (100), is arranged in the pipeline of described exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860636.4U CN203687474U (en) | 2013-12-24 | 2013-12-24 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860636.4U CN203687474U (en) | 2013-12-24 | 2013-12-24 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687474U true CN203687474U (en) | 2014-07-02 |
Family
ID=51009362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320860636.4U Withdrawn - After Issue CN203687474U (en) | 2013-12-24 | 2013-12-24 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203687474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729130A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
-
2013
- 2013-12-24 CN CN201320860636.4U patent/CN203687474U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729130A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| WO2015096539A1 (en) * | 2013-12-24 | 2015-07-02 | 珠海格力电器股份有限公司 | Air-conditioning system and method for controlling same |
| CN104729130B (en) * | 2013-12-24 | 2017-05-10 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20170510 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20170510 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |