CN1278050A - Device and method for detecting suction and discharge pressures of multi-split air conditioner compressor - Google Patents
Device and method for detecting suction and discharge pressures of multi-split air conditioner compressor Download PDFInfo
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- CN1278050A CN1278050A CN99109158A CN99109158A CN1278050A CN 1278050 A CN1278050 A CN 1278050A CN 99109158 A CN99109158 A CN 99109158A CN 99109158 A CN99109158 A CN 99109158A CN 1278050 A CN1278050 A CN 1278050A
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- heat exchanger
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 abstract 1
- 238000004378 air conditioning Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a device and a method for detecting suction and discharge pressures of multi-split air conditioner compressors. The detection device comprises a compressor, a liquid storage tank, a capillary tube and a heat exchanger. The heat exchanger is composed of an inner sleeve and an outer sleeve with a pipeline interlayer, temperature sensors are respectively pasted on the inner sleeve and the outer sleeve, and the saturation temperature of the suction pressure and the exhaust pressure of the compressor is directly measured by the self circulation of the suction pressure and the exhaust pressure of the compressor. And converting the saturation pressure according to the saturation temperature. Compared with the prior art, the invention can save a pressure sensor, reduce the cost of a control system, lead the detection program to be simple and convenient to control, ensure the control precision and have very high practical value.
Description
The present invention relates to compressor suction, exhaust pressure detection means and method in the air-conditioning refrigeration system, particularly one drag the suction of many compressors of air conditioner, exhaust pressure detection means and detection method thereof.
Along with improving constantly of people's living standard, housing condition is progressively improved.Air conditioner in the multicell also claims to drag the demand of many air-conditionings to increase day by day.Therefore, develop and to improve an one driven multiple air conditioner and have vast market prospect.At present, prior art one is dragged in many direct expansions formula air-conditioning system and is generally all adopted two pressure sensors to detect the suction of compressor, pressure at expulsion respectively, the assisted with necessary temperature sensor detects the running status of whole air-conditioning system, and controls the stable and energy-saving run of air-conditioning system by certain control algolithm.Adopt that two pressure sensors detect the suction of compressor respectively, the shortcoming of pressure at expulsion is, not only cost an arm and a leg but also the refrigeration control system complexity, also directly influenced system's control accuracy.
In order to overcome the shortcoming that exists in the above-mentioned prior art, the purpose of this invention is to provide a kind of one and drag the suction of many compressors of air conditioner, exhaust pressure detection means and detection method thereof.Its checkout gear is cheap, easy to manufacture.Utilize the detection method of its checkout gear, can reduce the number of sensors in the one driven multiple air conditioner control system, simplify the refrigeration system control decision, reduce the cost of control system, improve system's control accuracy.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
One drags many compressors of air conditioner suctions, exhaust pressure detection means, and it comprises compressor, receiver, capillary and heat exchanger.Its design feature is that described design of heat exchanger is by the inner and outer pipes socket, the pipe sandwich between outer tube two ends and outer wall of inner tube sealing and formation outer wall of inner tube and the outer tube wall.Outer tube two parts are not provided with input port and delivery outlet.Mount a temperature sensor on the outer tube outer wall face.Blast pipe from compressor is connected with the outer tube input port, and the outer tube delivery outlet is connected with described capillary, and the other end capillaceous is connected with interior pipe input port.Mount another temperature sensor on the outer wall of capillary and interior pipe linkage section.Interior pipe delivery outlet is connected with described receiver, and receiver is connected with compressor suction duct.
In order to make thermometric accurately reach easy installation and removal.According to technique scheme, the outer tube of described heat exchanger and the outer expose portion of interior pipe are contained by insulation material.The blast pipe of described compressor and outer tube input port linkage section, interior pipe delivery outlet and receiver linkage section are equipped with stop valve.
Drag according to above-mentioned one that many compressors of air conditioner are inhaled, the detection method of exhaust pressure detection means, the steps include:
1. the small quantity of compressor air-discharging is inserted by inside and outside sleeve pipe socket, the outer tube two ends are sealed with outer wall of inner tube and are had in the pipe sandwich of double pipe heat exchanger of pipe sandwich, make high pressure high temperature vapor heat release condensation in pipe sandwich.
2. will be condensed liquid introduce in the interior pipe that inserts double pipe heat exchanger in the capillary after the throttling step-down, make liquid refrigerant absorption condensation heat and evaporating in the pipe in heat exchanger.
3. the gaseous refrigerant after the evaporation in the pipe in the heat exchanger is taken back compressor suction duct behind receiver.
4. by pairing saturation temperature under the temperature sensor measurement compressor air suction pressure that is installed on the capillary outlet pipeline.By being installed in the condensation temperature that temperature sensor measurement on the heat exchanger outer tube wall goes out the compressor air-discharging condensation process, the i.e. pairing saturation temperature of Compressor Discharge Pressure.
5. by the saturation temperature of measured compressor suction, pressure at expulsion,, converse suction, the pressure at expulsion of compressor according to the functional relation of cold-producing medium saturation temperature and saturation pressure.
The present invention is owing to adopted the heat exchanger of the band pipe sandwich of being made up of inside and outside sleeve pipe socket form, the temperature sensor that utilization directly mounts on heat exchanger wall, the self-loopa of and exhaust air-breathing by compressor of air conditioner, directly measure compressor suction, the pairing saturation temperature of pressure at expulsion, according to the functional relation of cold-producing medium saturation temperature and saturation pressure, directly calculate suction, the pressure at expulsion of compressor again.Experimental data proves that the error of utilizing measured condensing pressure of this checkout gear and detection method thereof and evaporating pressure is all in 5% scope.Drag many direct expansions formula air-conditioning system for one, recovery type heat particularly, be that refrigeration system is used for heating of some room with all or part of condensation load, simultaneously all or part of evaporation load is used for one of some rooms refrigeration and drags many direct expansions formula air-conditioning system, very convenient in the time of need detecting or control condensing pressure and evaporating pressure.Compared with prior art, the heat exchanger in the checkout gear of the present invention, it is simple in structure, reasonable in design, easy to manufacture, cost is low.Utilize the detection system of its composition, not only can replace expensive two pressure sensors.Reduce the cost of control system, and made that trace routine is simple and direct, control is convenient, and can guarantee certain control accuracy requirement, had very high practical value and vast market prospect.
The invention will be further described below in conjunction with accompanying drawing and concrete embodiment and detection method:
Fig. 1 is a checkout gear schematic diagram of the present invention;
Fig. 2 is a heat exchanger structure schematic diagram in the checkout gear of the present invention.
Referring to Fig. 1 and Fig. 2, one drags many compressors of air conditioner suctions, exhaust pressure detection means, and it comprises compressor 1, receiver 7, capillary 6 and heat exchanger 3.Described heat exchanger 3 is made as by the inner and outer pipe socket, the pipe sandwich between outer tube two ends and the sealing of interior pipe outer end and formation outer wall of inner tube and the outer tube wall.Outer tube two parts are not provided with input port 31 and delivery outlet 34.Mount a temperature sensor 4 on the outer tube outer wall face, near outer tube delivery outlet 34 1 sides.Blast pipe from compressor 1 is connected with outer tube input port 31, and outer tube delivery outlet 34 is connected with capillary 6, and the other end of capillary 6 is connected with interior pipe delivery outlet 33.Mount a temperature sensor 5 on the outer wall of capillary 6 and interior pipe linkage section.Interior pipe delivery outlet 35 is connected with receiver 7, and receiver 7 is connected with compressor 1 air intake duct.The outer tube of heat exchanger 3 and the outer expose portion of interior pipe are contained by insulation material 32.The blast pipe of compressor 1 and outer tube input port 31 linkage sections, interior pipe delivery outlet 35 are equipped with stop valve 2 with receiver 7 linkage sections.
The detection method step of checkout gear of the present invention is:
1. the small quantity of compressor air-discharging is inserted by inside and outside sleeve pipe socket, the outer tube two ends are sealed with outer wall of inner tube and are had in the pipe sandwich of double pipe heat exchanger 3 of pipe sandwich, make high pressure high temperature vapor heat release condensation in pipe sandwich.
2. will be condensed liquid introduce in the interior pipe that inserts double pipe heat exchanger 3 in the capillary 6 after the throttling step-down, make liquid refrigerant heat exchanger 3 in the pipe absorption condensation hot and evaporate.
3. the gaseous refrigerant after the evaporation in the pipe in the heat exchanger 3 is taken back compressor 1 air intake duct behind receiver 7.
4. measure the pairing saturation temperature of compressor 1 pressures of inspiration(Pi) by the temperature sensor 5 that is installed on the outer wall of inner tube that capillary 6 exports and heat exchanger 3 joins, measure the condensation temperature of compressor 1 exhaust condensation process, the i.e. pairing saturation temperature of compressor 1 pressure at expulsion by being installed in temperature sensor 4 on the heat exchanger 3 outer tube walls.
5. by the saturation temperature of measured compressor 1 suction, pressure at expulsion,, converse suction, the pressure at expulsion of compressor 1 according to the functional relation of cold-producing medium saturation temperature and saturation pressure.
Claims (5)
1, a kind ofly be applicable to that one drags many compressors of air conditioner to inhale, exhaust pressure detection means, it comprises compressor (1), receiver (7), capillary (6) and heat exchanger (3), it is characterized in that: described heat exchanger (3) is made as by interior, the outer tube socket, pipe sandwich between outer tube two ends and outer wall of inner tube sealing and formation outer wall of inner tube and the outer tube wall, outer tube two parts are not provided with input port (31) and delivery outlet (34), mount a temperature sensor (4) on the outer tube outer wall face, blast pipe from compressor (1) is connected with outer tube input port (31), outer tube delivery outlet (34) is connected with described capillary (6), the other end of capillary (6) is connected with interior pipe input port (33), mount another temperature sensor (5) on the outer wall of capillary (6) and interior pipe linkage section, interior pipe delivery outlet (35) is connected with described receiver (7), and receiver (7) is connected with compressor (1) air intake duct.
2, drag many compressors of air conditioner suctions, exhaust pressure detection means according to claim 1 described, it is characterized in that: the outer tube of described heat exchanger (3) and the outer expose portion of interior pipe are contained by insulation material (32).
3, drag many compressors of air conditioner suctions, exhaust pressure detection means according to claim 1 or 2 described, it is characterized in that: the blast pipe of described compressor (1) and outer tube input port (31) linkage section, interior pipe delivery outlet (35) are equipped with stop valve (2) with receiver (7) linkage section.
4, drag many compressors of air conditioner suctions, exhaust pressure detection means according to claim 3 described, it is characterized in that: the temperature sensor (4) that mounts on the described outer tube outer wall face is near outer tube delivery outlet (34) one sides.
5, drag the detection method of many compressors of air conditioner suctions, exhaust pressure detection means according to claim 1 described, the steps include:
1. the small quantity of compressor air-discharging is inserted by the internal and external casing socket, the outer tube two ends are sealed with outer wall of inner tube and are had in the pipe sandwich of double pipe heat exchanger of pipe sandwich, make high pressure high temperature vapor heat release condensation in pipe sandwich;
2. will be condensed liquid introduce in the interior pipe that inserts double pipe heat exchanger in the capillary after the throttling step-down, make liquid refrigerant absorption condensation heat and evaporating in the pipe in heat exchanger;
3. the gaseous refrigerant after the evaporation in the pipe in the heat exchanger is taken back compressor suction duct behind receiver;
4. by the pairing saturation temperature of temperature sensor measurement compressor air suction pressure that is installed on the capillary outlet pipeline; By being installed in the condensation temperature that temperature sensor measurement on the heat exchanger outer tube outer wall face goes out the compressor air-discharging condensation process, the i.e. pairing saturation temperature of Compressor Discharge Pressure;
5. by the saturation temperature of measured compressor suction, pressure at expulsion,, converse suction, the pressure at expulsion of compressor according to the functional relation of cold-producing medium saturation temperature and saturation pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109158A CN1109859C (en) | 1999-06-17 | 1999-06-17 | Device and method for detecting suction and discharge pressures of multi-split air conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109158A CN1109859C (en) | 1999-06-17 | 1999-06-17 | Device and method for detecting suction and discharge pressures of multi-split air conditioner compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1278050A true CN1278050A (en) | 2000-12-27 |
| CN1109859C CN1109859C (en) | 2003-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99109158A Expired - Fee Related CN1109859C (en) | 1999-06-17 | 1999-06-17 | Device and method for detecting suction and discharge pressures of multi-split air conditioner compressor |
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| Country | Link |
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| CN (1) | CN1109859C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563789A (en) * | 2012-02-01 | 2012-07-11 | 美的集团有限公司 | Multi-split heat pump air conditioning system and control method thereof |
| CN103344357A (en) * | 2013-07-10 | 2013-10-09 | 海信（山东）空调有限公司 | Device for detecting coolant system control parameters and detecting method |
| CN110186163A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of air conditioner |
| CN110207332A (en) * | 2019-06-11 | 2019-09-06 | 珠海格力电器股份有限公司 | Pressure detection method of air conditioner and air conditioner |
| CN114414724A (en) * | 2022-01-12 | 2022-04-29 | 广东省科学院测试分析研究所(中国广州分析测试中心) | Novel water-free azotometer |
-
1999
- 1999-06-17 CN CN99109158A patent/CN1109859C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563789A (en) * | 2012-02-01 | 2012-07-11 | 美的集团有限公司 | Multi-split heat pump air conditioning system and control method thereof |
| CN103344357A (en) * | 2013-07-10 | 2013-10-09 | 海信（山东）空调有限公司 | Device for detecting coolant system control parameters and detecting method |
| CN103344357B (en) * | 2013-07-10 | 2015-04-08 | 海信（山东）空调有限公司 | Device for detecting coolant system control parameters and detecting method |
| CN110186163A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of air conditioner |
| CN110207332A (en) * | 2019-06-11 | 2019-09-06 | 珠海格力电器股份有限公司 | Pressure detection method of air conditioner and air conditioner |
| CN114414724A (en) * | 2022-01-12 | 2022-04-29 | 广东省科学院测试分析研究所(中国广州分析测试中心) | Novel water-free azotometer |
| CN114414724B (en) * | 2022-01-12 | 2024-02-02 | 广东省科学院测试分析研究所(中国广州分析测试中心) | Novel water-free azotometer |
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| Publication number | Publication date |
|---|---|
| CN1109859C (en) | 2003-05-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AR01 | Abandonment of patent right to avoid double patenting |
According to article 9 of the patent law and article 13 of the detailed rules for the implementation of the patent law: 99109158.2 of the invention patents in the current issue of authorization announcement, and at the same time corresponding to the 99214210.5 utility model patent to be given up, and in the 19 volume of the 22 issue of the new type of communique on the patent right to abandon the announcement. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TONGFANG CO., LTD.; QINGHUA UNIVERSITY Free format text: FORMER NAME OR ADDRESS: TSINGHUA TONGFANG CO., LTD.; QINGHUA UNIVERSITY |
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| CP03 | Change of name, title or address |
Address after: 100083 Beijing Tsinghua Tongfang science and Technology Square A block 2907 Co-patentee after: TSINGHUA University Patentee after: Tongfang Co.,Ltd. Address before: 100083 Beijing Tsinghua Tongfang science and Technology Square A block 2907 Co-patentee before: Tsinghua University Patentee before: Tsinghua Tongfang Co.,Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030528 Termination date: 20120617 |