CN102538318A - Method for controlling suction temperature of refrigeration system - Google Patents
Method for controlling suction temperature of refrigeration system Download PDFInfo
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- CN102538318A CN102538318A CN2012100365764A CN201210036576A CN102538318A CN 102538318 A CN102538318 A CN 102538318A CN 2012100365764 A CN2012100365764 A CN 2012100365764A CN 201210036576 A CN201210036576 A CN 201210036576A CN 102538318 A CN102538318 A CN 102538318A
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- compressor
- condenser
- hydrojet
- evaporimeter
- expansion valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling the suction temperature of a refrigeration system. An electronic expansion valve is arranged between a condenser and an evaporator; an output end of the condenser is connected with a liquid spray bypass return circuit; the liquid spray bypass return circuit is connected to the front side of the output end of the evaporator; a nozzle of the liquid spray bypass return circuit is aligned with the outer wall of an air suction pipe of a compressor; and the electronic expansion valve and a capillary pipe are arranged on the liquid spray bypass return circuit. By the method, the electronic expansion valve instead of the conventional electromagnetic valve is arranged between the condenser and the evaporator, so that the amount of a liquid refrigerant which flows into the evaporator can be controlled, and the problem of incapability of evaporating the refrigerant in time due to the redundancy of the refrigerant which flow into the evaporator is solved; and the liquid spray bypass return circuit is arranged at the output end of the condenser, and liquid sprayed by the liquid spray bypass return circuit is used for cooling the air suction pipe to reduce the suction temperature of the compressor, so that the system can be operated safely and reliably, a better effect can be achieved, the compressor can be protected effectively, and the service life of the compressor can be prolonged.
Description
Technical field
The present invention relates to the air-conditioning product technical field, be specifically related to a kind of method that the suction temperature of air-conditioning refrigeration system is controlled.
Background technology
Therefore advantages such as that central air conditioner system has is effective, efficient is high, power consumption is low all can be applied to central air-conditioning in many places.The most basic framework of air-conditioning system is that compressor is connected with condenser, condenser is connected with evaporimeter, evaporimeter is connected with compressor, thereby constitutes a closed circuit, is equipped with the auxiliary and control appliance of going up other again, constitutes a complete air-conditioning system thus.In the conventional art, compressor-condenser-evaporimeter-compressor is a closed circuit that carries out step by step successively, a magnetic valve normally is installed between condenser and evaporimeter is used to control the flow of refrigerant from the condenser to the evaporimeter.The shortcoming of conventional art is: the first, magnetic valve only opens or closes two states; That is to say for the control of cold-producing medium and have only on-off two situation, can not control the concrete flow of cold-producing medium, the amount of liquid refrigerant that so just possibly cause getting into evaporimeter is excessive; Some cold-producing medium has little time evaporation and just directly gets into compressor from air intake duct; Produce back the influence that liquid impacts, so can cause damage for a long time, also can influence the normal operation of system certainly compressor; The second, when system during at summer operation, because environment temperature is higher, the suction temperature of system and the degree of superheat can be very big, so not only can also can cause damage to compressor, the service life of shortening compressor to the operate as normal generation harmful effect of system.
Summary of the invention
The technical problem that the present invention will solve provides a kind of suction temperature that reduces system, can control the spouting liquid of cold-producing medium, make the control method of the safer reliable refrigeration system suction temperature of system.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: a kind of method of controlling of refrigeration system suction temperature; This refrigeration system comprises compressor, condenser and evaporimeter, and compressor connects condenser, and condenser connects evaporimeter; Evaporimeter connects compressor, and compressor, condenser and evaporimeter form a closed circuit; On the pipeline between compressor and the condenser, be provided with high-voltage switch gear and needle-valve; It between evaporimeter and the compressor air intake duct; Which is provided with low tension switch and needle-valve; It is characterized in that: on the pipeline between condenser and the evaporimeter, be provided with an electric expansion valve, electric expansion valve can accurately be controlled the refrigerant amount that gets into evaporimeter according to the running status of system, and cold-producing medium can effectively be evaporated; Prevent that too much liquid refrigerant from having little time to evaporate direct entering compressor, compressor is caused back the influence of liquid impact; Output at condenser is connected with a hydrojet bypass circulation, and this hydrojet bypass circulation is connected to output the place ahead of evaporimeter, the outer wall of the air intake duct of the nozzle alignment compressor of hydrojet bypass circulation; One electric expansion valve is installed on the hydrojet bypass circulation, and electric expansion valve can accurately be controlled spouting liquid, and it is quick on the draw, and prevents that hydrojet is too much; Partially liq is discharged the back from condenser and is got into the hydrojet bypass circulation, after the effect of electric expansion valve, waters the air intake duct outer surface that drenches compressor from the nozzle ejection of hydrojet bypass circulation, and the suction temperature of air intake duct is reduced.
Further, on the hydrojet bypass circulation, also be provided with capillary, capillary is located between the nozzle of electric expansion valve and hydrojet bypass circulation.Through capillary the pressure drop of hydrojet bypass circulation is increased, force electronic expansion valve opening to increase, avoid electric expansion valve in the excessive shortcoming of the too little time error of aperture.
The present invention replaces traditional magnetic valve through electric expansion valve is installed between condenser and evaporimeter, make that the amount of liquid refrigerant entering evaporimeter can be controlled, avoids getting into the problem that evaporimeter can not in time evaporate because of too much cold-producing medium; At the condenser output hydrojet bypass circulation is set; Utilize hydrojet bypass circulation ejection liquid that air intake duct is lowered the temperature; Reduce the suction temperature of compressor, thereby not only can make the duty of system safer reliable, reach better effect; And can effectively protect compressor, increase the service life of compressor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1 is compressor, and 2 is condenser, and 3 is evaporimeter, and 4 is capillary, and 5 is electric expansion valve, and 6 is electric expansion valve, and 7 is air intake duct, and 8 is the hydrojet bypass circulation, and HP is a high-voltage switch gear, and CJ is a needle-valve, and LP is a low tension switch.
The specific embodiment
In the present embodiment; With reference to Fig. 1, the method for controlling of said refrigeration system suction temperature, this refrigeration system comprise compressor 1, condenser 2 and evaporimeter 3; Compressor 1 connects condenser 2; Condenser 2 connects evaporimeter 3, and evaporimeter 3 connects compressor 1, and compressor 1, condenser 2 and evaporimeter 3 form a closed circuit; On the pipeline between compressor 1 and the condenser 2, being provided with high-voltage switch gear HP and needle-valve CJ, is air intake duct 7 between evaporimeter 3 and the compressor 1, which is provided with low tension switch LP and needle-valve CJ; On the pipeline between condenser 2 and the evaporimeter 3, be provided with an electric expansion valve 5; Electric expansion valve 5 can accurately be controlled the refrigerant amount that gets into evaporimeter 3 according to the running status of system; Cold-producing medium can effectively be evaporated; Prevent that too much liquid refrigerant from having little time to evaporate direct entering compressor 1, compressor 1 is caused back the influence of liquid impact; Output at condenser 2 is connected with a hydrojet bypass circulation 8, and this hydrojet bypass circulation 8 is connected to output the place ahead of evaporimeter 3, the outer wall of the air intake duct 7 of the nozzle alignment compressor 1 of hydrojet bypass circulation 8; One electric expansion valve 6 is installed on hydrojet bypass circulation 8, and this electric expansion valve 6 can accurately be controlled spouting liquid, and it is quick on the draw, and prevents that hydrojet is too much; Partially liq is discharged the back from condenser 2 and is got into hydrojet bypass circulations 8, after the effect of electric expansion valve 6, sprays air intake duct 7 outer surfaces of compressor 1 from the nozzle of hydrojet bypass circulation 8, and the suction temperature of air intake duct 7 is reduced.
On hydrojet bypass circulation 8, also be provided with capillary 4, capillary 4 is located between the nozzle of electric expansion valve 6 and hydrojet bypass circulation 8.Through capillary 4 pressure drop of hydrojet bypass circulation 8 is increased, force electric expansion valve 6 apertures to increase, avoid electric expansion valve 6 in the excessive shortcoming of the too little time error of aperture.
Below the present invention is done a detailed description, the above is merely the present invention's preferred embodiment, when can not limiting practical range of the present invention, promptly allly does impartially to change and modify according to the application's scope, all should still belong in the covering scope of the present invention.
Claims (2)
1. the method for controlling of a refrigeration system suction temperature; This refrigeration system comprises compressor, condenser and evaporimeter, and compressor connects condenser, and condenser connects evaporimeter; Evaporimeter connects compressor, and compressor, condenser and evaporimeter form a closed circuit; On the pipeline between compressor and the condenser, being provided with high-voltage switch gear and needle-valve, is air intake duct between evaporimeter and the compressor, which is provided with low tension switch and needle-valve, it is characterized in that: on the pipeline between condenser and the evaporimeter, be provided with an electric expansion valve; Output at condenser is connected with a hydrojet bypass circulation, and this hydrojet bypass circulation is connected to output the place ahead of evaporimeter, the outer wall of the air intake duct of the nozzle alignment compressor of hydrojet bypass circulation; One electric expansion valve is installed on the hydrojet bypass circulation; Partially liq is discharged the back from condenser and is got into the hydrojet bypass circulation, after the effect of electric expansion valve, waters the air intake duct outer surface that drenches compressor from the nozzle ejection of hydrojet bypass circulation, and the suction temperature of air intake duct is reduced.
2. the method for controlling of refrigeration system suction temperature according to claim 1 is characterized in that: on the hydrojet bypass circulation, also be provided with capillary, capillary is located between the nozzle of electric expansion valve and hydrojet bypass circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100365764A CN102538318A (en) | 2012-02-19 | 2012-02-19 | Method for controlling suction temperature of refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100365764A CN102538318A (en) | 2012-02-19 | 2012-02-19 | Method for controlling suction temperature of refrigeration system |
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| CN102538318A true CN102538318A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100365764A Pending CN102538318A (en) | 2012-02-19 | 2012-02-19 | Method for controlling suction temperature of refrigeration system |
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| CN (1) | CN102538318A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997518A (en) * | 2012-09-25 | 2013-03-27 | 无锡溥汇机械科技有限公司 | High-precision control method of heat exchange system |
| CN103017390A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | Improved heat exchange system |
| CN103017389A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN104776656A (en) * | 2014-01-11 | 2015-07-15 | 苏州恒兆空调节能科技有限公司 | Frequency variable air conditioner |
| CN105928277A (en) * | 2016-05-06 | 2016-09-07 | 广东美的暖通设备有限公司 | Control method and system of electromagnetic valve for air conditioner liquid injecting cooling and air conditioner |
| CN106152583A (en) * | 2016-08-23 | 2016-11-23 | 无锡溥汇机械科技有限公司 | A kind of High-precision temperature control type heat exchange system |
| CN106440456A (en) * | 2016-09-19 | 2017-02-22 | 珠海市银岭冷冻设备有限公司 | Heating and cooling system and refrigerating and heating method thereof |
| CN108895731A (en) * | 2018-04-28 | 2018-11-27 | 青岛海尔空调器有限总公司 | Fluid reservoir, air conditioner and fluid reservoir temperature adjustment control method |
| CN108954999A (en) * | 2017-05-17 | 2018-12-07 | 上海通用富士冷机有限公司 | Electric expansion valve hot gas defrosting system Condensing units |
| CN111256395A (en) * | 2018-11-30 | 2020-06-09 | 上海海立电器有限公司 | Vapor-supplementing and enthalpy-increasing system and control method thereof |
| CN114790827A (en) * | 2021-12-15 | 2022-07-26 | 广东天凛高新科技有限公司 | Condensation grouting device and grouting method |
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| EP1039251B1 (en) * | 1999-03-26 | 2011-08-10 | Carrier Corporation | Method of controlling an electronic expansion valve |
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- 2012-02-19 CN CN2012100365764A patent/CN102538318A/en active Pending
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| EP1039251B1 (en) * | 1999-03-26 | 2011-08-10 | Carrier Corporation | Method of controlling an electronic expansion valve |
| KR100538167B1 (en) * | 2004-05-27 | 2005-12-22 | 삼성전자주식회사 | Air conditioning system |
| CN201547953U (en) * | 2009-10-30 | 2010-08-11 | 杭州锦江百浪新能源有限公司 | Hydrojet cooling air source water heater |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017390A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | Improved heat exchange system |
| CN103017389A (en) * | 2012-09-25 | 2013-04-03 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN103017389B (en) * | 2012-09-25 | 2015-09-09 | 无锡溥汇机械科技有限公司 | High-precision temperature control type heat exchange system |
| CN102997518B (en) * | 2012-09-25 | 2015-09-23 | 无锡溥汇机械科技有限公司 | The high-accuracy control method of heat-exchange system |
| CN103017390B (en) * | 2012-09-25 | 2015-12-02 | 无锡溥汇机械科技有限公司 | Improved hot exchange system |
| CN102997518A (en) * | 2012-09-25 | 2013-03-27 | 无锡溥汇机械科技有限公司 | High-precision control method of heat exchange system |
| CN104776656B (en) * | 2014-01-11 | 2018-05-08 | 苏州恒兆空调节能科技有限公司 | A kind of transducer air conditioning |
| CN104776656A (en) * | 2014-01-11 | 2015-07-15 | 苏州恒兆空调节能科技有限公司 | Frequency variable air conditioner |
| CN105928277A (en) * | 2016-05-06 | 2016-09-07 | 广东美的暖通设备有限公司 | Control method and system of electromagnetic valve for air conditioner liquid injecting cooling and air conditioner |
| CN105928277B (en) * | 2016-05-06 | 2019-02-15 | 广东美的暖通设备有限公司 | A kind of air-conditioning Liquid injection cooling electromagnetic valve control method, system and air-conditioning |
| CN106152583A (en) * | 2016-08-23 | 2016-11-23 | 无锡溥汇机械科技有限公司 | A kind of High-precision temperature control type heat exchange system |
| CN106152583B (en) * | 2016-08-23 | 2019-03-12 | 无锡溥汇机械科技有限公司 | A kind of High-precision temperature control type heat exchange system |
| CN106440456A (en) * | 2016-09-19 | 2017-02-22 | 珠海市银岭冷冻设备有限公司 | Heating and cooling system and refrigerating and heating method thereof |
| CN108954999A (en) * | 2017-05-17 | 2018-12-07 | 上海通用富士冷机有限公司 | Electric expansion valve hot gas defrosting system Condensing units |
| CN108895731A (en) * | 2018-04-28 | 2018-11-27 | 青岛海尔空调器有限总公司 | Fluid reservoir, air conditioner and fluid reservoir temperature adjustment control method |
| CN111256395A (en) * | 2018-11-30 | 2020-06-09 | 上海海立电器有限公司 | Vapor-supplementing and enthalpy-increasing system and control method thereof |
| CN114790827A (en) * | 2021-12-15 | 2022-07-26 | 广东天凛高新科技有限公司 | Condensation grouting device and grouting method |
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Application publication date: 20120704 |