CN205261842U - Compressor discharge temp's control system and compressor - Google Patents
Compressor discharge temp's control system and compressor Download PDFInfo
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- CN205261842U CN205261842U CN201521117974.4U CN201521117974U CN205261842U CN 205261842 U CN205261842 U CN 205261842U CN 201521117974 U CN201521117974 U CN 201521117974U CN 205261842 U CN205261842 U CN 205261842U
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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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Abstract
The utility model discloses a compressor discharge temp's control system and compressor. Wherein, this control system includes: temperature sensor sets up on the exhaust passage of compressor export for gather the current exhaust temperature of compressor, the controller is connected with temperature sensor for because current exhaust temperature confirms the adjustment parameters of electronic expansion valve's target aperture, and generate the control signal that the record has adjustment parameters, electronic expansion valve is connected with the controller, installs on the hydrojet passageway of compressor for under control signal's of the triggering, adjust the aperture to the target aperture according to adjustment parameters. Through the utility model discloses, prior art regulation compressor discharge temp's the technical problem that the precision is low has been solved.
Description
Technical field
The utility model relates to air-conditioner control field, in particular to a kind of control system of compressor exhaust temperatureThe compressor of unifying.
Background technology
(as high in condensation temperature or evaporation temperature in the time that the compressor in the refrigeration system of air-conditioner uses in limiting condition scopeSpend low operating mode), the Exhaust temperature rise of compressor, declines lubricating oil viscosity, the lubricated merit of lubricating oil when seriousEnergy lost efficacy, thereby was restricting the range of operation of compressor.
The means that solve the high problem of delivery temperature in prior art are mainly Liquid injection coolings, conventional Liquid injection cooling mode bagDraw together the direct Liquid injection cooling of nozzle and two kinds of modes of heating power expansion valve control Liquid injection cooling.
The direct Liquid injection cooling mode of nozzle refers to for the gross data under each operating mode and real data, determines more generalThe parameters such as the size of nozzle, length, shape, design the mode of the nozzle that directly sprays into cold-producing medium. But this kind of modeUnder different operating modes, there is the poor interval of cooling effect, can not adapt to all ranges of application completely.
Heating power expansion valve control Liquid injection cooling mode refers to heating power expansion valve temperature sensing bag is arranged in and on blast pipe, experiences exhaustTemperature, temperature-sensitive bag changes the delivery temperature of experiencing the aperture size of the valve that feeds back to heating power expansion valve by pressure,To control hydrojet flow, thereby reach the object of controlling delivery temperature. But this kind of mode deposited deficiency both ways: oneAspect, installation, the insulation to temperature-sensitive bag of this kind of mode has stricter requirement, as temperature-sensitive bag can not well mate and connectTouch surface or occur leaking heat, will there is deviation in the delivery temperature that temperature-sensitive bag is experienced, finally affect the normal fortune of compressorOK; On the other hand, there is the problem that hysteresis quality is serious in thermal expansion valve regulation, in the time that changing appears in operating mode, and Wu FaxunThe demand of speed coupling spouting liquid.
The method of two kinds of above-mentioned adjusting delivery temperatures, can only carry out coarse adjustment to delivery temperature, all exists and regulates notAccurate problem, cannot correctly mate spouting liquid. In the time that spouting liquid is too small, will cause the further liter of delivery temperatureHigh; In the time that spouting liquid is excessive, may cause refrigerating capacity loss, compressor liquid hammer equivalent risk.
The low problem of precision that regulates delivery temperature for prior art, not yet proposes effective solution at present.
Utility model content
The utility model embodiment provides a kind of control system and compressor of compressor exhaust temperature, at least to solvePrior art regulates the low technical problem of precision of delivery temperature.
According to the utility model embodiment aspect, a kind of control system of compressor exhaust temperature is provided, shouldControl system comprises: temperature sensor, is arranged on the exhaust passage of compressor air-discharging outlet, for gathering described pressureThe current delivery temperature of contracting machine; Controller, is connected with described temperature sensor, for based on described current delivery temperatureDetermine the adjustment parameter of the target aperture of electric expansion valve, and generate the control signal that records described adjustment parameter; InstituteState electric expansion valve, be connected with described controller, be arranged on the hydrojet passage of described compressor, in described controlUnder the triggering of signal processed, according to described adjustment parameter by regulation to described target aperture.
Further, described controller comprises: memory, and for storing target temperature and the first exhaust difference, wherein,Described the first exhaust difference is poor for the current delivery temperature that represents to detect before current period and described target temperatureValue; Calculator, is connected with described memory, for calculating second of described target temperature and described current delivery temperatureExhaust difference; Processor, is connected with described calculator and described memory, for based on described the first exhaust difference andDescribed the second exhaust difference is determined described adjustment parameter.
Further, described system also comprises: described hydrojet passage, as the circulation passage of described compressor refrigerant;Described electric expansion valve is arranged between the entrance and exit of described hydrojet passage.
Further, described control system also comprises: air intake passage, be arranged on the suction side of described compressor, forReceive the return-air of the evaporation side of described compressor.
Further, described control system also comprises: described exhaust passage, is arranged on the condensation side of described compressor.
Further, described cold-producing medium is liquid refrigerant.
Further, described liquid refrigerant sprays into the suction side of described compressor by the outlet of described hydrojet passage.
Further, described control system also comprises: liquid feeding channel, is connected with described hydrojet passage, described in inciting somebody to actionLiquid refrigerant is delivered to described hydrojet passage.
According to the utility model embodiment on the other hand, also provide a kind of compressor, this compressor comprises: above-mentionedThe control system of compressor exhaust temperature.
In the utility model embodiment, on the hydrojet passage of compressor, electric expansion valve is installed, by the row who detectsThe aperture of temperature degree feedback regulation electric expansion valve, to control the refrigerant flow that sprays into suction side, thus controlThe delivery temperature of compressor processed. By above-described embodiment, temperature sensor can gather the compression under any operating modeThe delivery temperature of machine, and by the control signal current delivery temperature adjusting electricity based on collecting in time of processorThe aperture of sub-expansion valve, to realize the effect of accurate control spouting liquid, has solved prior art and has regulated compressor air-discharging temperatureThe low problem of precision of degree.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part,Schematic description and description of the present utility model is used for explaining the utility model, does not form of the present utility modelImproper restriction. In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the control system of a kind of compressor exhaust temperature of the utility model embodiment;
Fig. 2 is according to the signal of the control system of a kind of optional compressor exhaust temperature of the utility model embodimentFigure.
Detailed description of the invention
In order to make those skilled in the art person understand better the utility model scheme, real below in conjunction with the utility modelExecute the accompanying drawing in example, the technical scheme in the utility model embodiment is clearly and completely described, obviously, instituteThe embodiment describing is only the embodiment of the utility model part, instead of whole embodiment. Based on this practicalityEmbodiment in novel, those of ordinary skill in the art do not make under creative work prerequisite, obtain all itsHis embodiment, should belong to the scope of the utility model protection.
It should be noted that, term " first " in description of the present utility model and claims and above-mentioned accompanying drawing," second " etc. is for distinguishing similar object, and needn't be used for describing specific order or precedence. Should manageSeparate the data that use like this suitably exchanging in situation, so that embodiment of the present utility model described herein canWith except diagram here or describe those order enforcement. In addition, term " comprise " and " having " withAnd their any distortion, intention is to cover not exclusive comprising, for example, the process that comprised a series of unit,Those unit that system, product or equipment are not necessarily limited to clearly list, but can comprise clearly do not list orFor other intrinsic unit of these processes, product or equipment.
According to an aspect of the present utility model, provide a kind of embodiment of control system of compressor exhaust temperature.
Fig. 1 is according to the schematic diagram of the control system of a kind of compressor exhaust temperature of the utility model embodiment, as figureShown in 1, this control system comprises: temperature sensor 10, controller 30 and electric expansion valve 50.
Wherein, temperature sensor 10, is arranged on the exhaust passage 20 of compressor 70 air exits, for gathering pressureThe current delivery temperature of contracting machine.
Controller 30, is connected with temperature sensor, for determining that based on current delivery temperature the target of electric expansion valve opensThe adjustment parameter of degree, and generate the control signal that records adjustment parameter.
Electric expansion valve 50, is connected with controller, is arranged on the hydrojet passage 40 of compressor, for controlling letterNumber triggering under, according to adjust parameter by regulation to target aperture.
Adopt the utility model embodiment, on the hydrojet passage of compressor, electric expansion valve is installed, by the row who detectsThe aperture of temperature degree feedback regulation electric expansion valve, to control the refrigerant flow that sprays into suction side, thus controlThe delivery temperature of compressor processed. By above-described embodiment, temperature sensor can gather the compression under any operating modeThe delivery temperature of machine, and by the control signal current delivery temperature adjusting electricity based on collecting in time of processorThe aperture of sub-expansion valve, to realize the effect of accurate control spouting liquid, has solved prior art and has regulated compressor air-discharging temperatureThe low problem of precision of degree.
In the above-described embodiments, adopt this electric expansion valve, the change of the compressor exhaust temperature can accurate response gatheringChange, and by regulating the hydrojet aperture of this electric expansion valve accurately to regulate the refrigerant flow of the suction side that sprays into compressor.
From the viewpoint of economic benefit, the nozzle that directly sprays into cold-producing medium of the direct Liquid injection cooling mode of existing nozzle,The heating power expansion valve temperature sensing bag of heating power expansion valve control Liquid injection cooling mode is all to carry out specially according to the needs of actual conditionsDoor is special, and price is all higher. Compared with existing two kinds of Liquid injection cooling modes, adopt the electricity in above-described embodimentSub-expansion valve control compressor exhaust temperature, only need to select common electric expansion valve, and price is generally than equal conditionsUnder nozzle and cheap approximately 5～6 times of heating power expansion valve temperature sensing bag.
Particularly, on the exhaust passage of the air exit of compressor, (be in exhaust line) is provided with and detects delivery temperatureTemperature sensor, by the current delivery temperature of this temperature sensor Real-time Collection compressor, and current by what collectDelivery temperature is transferred to controller, after controller receives and deserves front exhaust temperature, with the target exhaust temperature setting in advanceDegree contrasts, and obtains the adjustment parameter of the target aperture of electric expansion valve, and generation control electronic expansion valve openingControl signal. Electric expansion valve, under the triggering of this control signal, regulates aperture to target aperture according to adjusting parameter,Realize the refrigerant flow that sprays into compressor by adjusting, cause the variation of delivery temperature.
In above-described embodiment of the present utility model, controller can comprise: memory, for store target temperature andThe first exhaust difference, wherein, current delivery temperature and the order of the first exhaust difference for representing to detect before current periodThe difference of mark temperature; Calculator, is connected with memory, for calculating the second row of target temperature and current delivery temperatureGas difference; Processor, is connected with calculator and memory, for true based on the first exhaust difference and the second exhaust differenceThe whole parameter of setting the tone.
The delivery temperature of the compressor that particularly, controller gathers according to temperature sensor is calculated the target of electric expansion valveThe adjustment parameter of aperture, and generate the control signal of controlling electric expansion valve. Controller calculates current according to sense cycleThe compressor exhaust temperature in cycle (is gone up with the deviation of the target exhaust temperature setting in advance (above-mentioned target temperature)The second exhaust difference of stating), and according to the current delivery temperature and the target exhaust temperature that detected before the current cycle of calculatingDeviation (being the first above-mentioned exhaust difference), can, by the two class differences that obtain, obtain the target of electric expansion valveThe adjustment parameter of aperture.
In the above-described embodiments, because the control signal of controlling electric expansion valve is calculated and generated by controller, controlDevice exists high, the fireballing advantage of data processing accuracy, therefore adopts this control signal controlling electric expansion valveRegulate when aperture, can ensure that electric expansion valve makes timely response to delivery temperature, to ensure the height to delivery temperaturePrecision regulates.
As shown in Figure 2, this control system can also comprise: hydrojet passage 40 is logical as the circulation of compressor refrigerantRoad; Electric expansion valve is arranged between the entrance and exit of hydrojet passage.
Particularly, above-mentioned electric expansion valve is arranged between the entrance and exit of hydrojet passage, when by above-mentioned enforcementThe mode of example, when the control signal of controlled electric expansion valve, under the triggering of this control signal, controls electronics swollenSwollen valve regulates aperture to the target of electric expansion valve to open according to the adjustment parameter of target aperture (being above-mentioned adjustment step number)Degree, realizes the throttling control to refrigerant flow by the regulation of controlling electric expansion valve. Cold-producing medium comes fromOn the condensed feed flow road of compressor, and flow into hydrojet passage by the entrance of hydrojet passage, at cold-producing medium process electricityAfter the control throttling of sub-expansion valve, spray into the suction side of compressor from the outlet of hydrojet passage, absorb compressor compressesThe heat producing in process, thus reach the object that reduces delivery temperature.
As shown in Figure 2, this control system can also comprise: air intake passage 60, be arranged on the suction side of compressor, and useIn the return-air of evaporation side that receives compressor; Exhaust passage 20, is arranged on the condensation side of compressor.
In above-described embodiment of the present utility model, cold-producing medium can be liquid refrigerant. Liquid refrigerant passes through hydrojetThe outlet of passage sprays into the suction side of compressor. This control system can also comprise: liquid feeding channel, connects with hydrojet passageConnect, for liquid refrigerant being delivered to hydrojet passage.
Below in conjunction with Fig. 2, embodiment of the present utility model is described in detail in detail, as shown in Figure 2, (compressor has air-breathing roadAbove-mentioned air intake passage 60), exhaust line (being above-mentioned exhaust passage 20), hydrojet road (be above-mentioned hydrojet passage40). The air-breathing return-air that comes from evaporation side of compressor; Condensation side is gone in its exhaust; The hydrojet of flowing through road entrance is for liquidCold-producing medium, generally comes from condensed feed flow road. In the exhaust line of compressor air-discharging outlet, be provided with and detect exhaust temperatureThe temperature sensor of degree. The electric expansion valve of controlling throttling is installed on hydrojet road. By temperature sensor, you detect pressureThe delivery temperature of contracting machine, and the delivery temperature of detection is inputed to controller, controller calculates this delivery temperatureProcessing obtains the adjusting step number of the aperture of electric expansion valve, and liquid refrigerant carries out through the regulation of electric expansion valveAfter throttling, spray into the suction side of compressor from the outlet on hydrojet road, absorb the heat producing in compression upgrading compression processAmount, thus delivery temperature reduced.
By above-described embodiment, temperature sensor can gather the delivery temperature of the compressor under any operating mode, andControl signal by electric expansion valve can be reacted the current delivery temperature collecting in time, has solved prior art pairWhat delivery temperature regulated is of limited application, and has serious hysteresis quality, causes the control accuracy of delivery temperature lowProblem.
According to the utility model embodiment, a kind of embodiment of compressor is also provided, this compressor comprises above-mentioned enforcementThe control system of the compressor exhaust temperature of example.
Adopt the utility model embodiment, on the hydrojet passage of compressor, electric expansion valve is installed, by the row who detectsThe aperture of temperature degree feedback regulation electric expansion valve, to control the refrigerant flow that sprays into suction side, thus controlThe delivery temperature of compressor processed. By above-described embodiment, temperature sensor can gather the compression under any operating modeThe delivery temperature of machine, and by the control signal current delivery temperature adjusting electricity based on collecting in time of processorThe aperture of sub-expansion valve, to realize the effect of accurate control spouting liquid, has solved prior art and has regulated compressor air-discharging temperatureThe low problem of precision of degree.
Particularly, on the exhaust passage of the air exit of compressor, (be in exhaust line) is provided with and detects delivery temperatureTemperature sensor, by the current delivery temperature of this temperature sensor Real-time Collection compressor, and current by what collectDelivery temperature is transferred to controller, after controller receives and deserves front exhaust temperature, with the target exhaust temperature setting in advanceDegree contrasts, and obtains the adjustment parameter of the target aperture of electric expansion valve, and generation control electronic expansion valve openingControl signal. Electric expansion valve, under the triggering of this control signal, regulates aperture to target aperture according to adjusting parameter,Realize the refrigerant flow that sprays into compressor by adjusting, cause the variation of delivery temperature.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodimentThere is no the part describing in detail, can be referring to the associated description of other embodiment.
In addition, the each functional unit in each embodiment of the utility model can be integrated in a processing unit, alsoCan be that the independent physics of unit exists, also can be integrated in a unit two or more unit. Above-mentionedIntegrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
Temperature sensor in the control system of the claimed compressor exhaust temperature of the utility model, controller andElectric expansion valve is all the entity products of determining structure and occupying certain space.
The above is only preferred embodiment of the present utility model, it should be pointed out that the common skill for the artArt personnel, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, theseImprovements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. a control system for compressor exhaust temperature, is characterized in that, comprising:
Temperature sensor, be arranged on the exhaust passage of compressor air-discharging outlet, for gathering described compressorCurrent delivery temperature;
Controller, is connected with described temperature sensor, for determining electronic expansion based on described current delivery temperatureThe adjustment parameter of the target aperture of valve, and generate the control signal that records described adjustment parameter;
Described electric expansion valve, is connected with described controller, is arranged on the hydrojet passage of described compressor, usesUnder the triggering in described control signal, according to described adjustment parameter by regulation to described target aperture.
2. control system according to claim 1, is characterized in that, described controller comprises:
Memory, for storing target temperature and the first exhaust difference, wherein, described the first exhaust difference is used forThe current delivery temperature detecting before expression current period and the difference of described target temperature;
Calculator, be connected with described memory, for calculating described target temperature and described current delivery temperatureThe second exhaust difference;
Processor, is connected with described calculator and described memory, for based on described the first exhaust difference and instituteState the second exhaust difference and determine described adjustment parameter.
3. control system according to claim 1, is characterized in that, described control system also comprises:
Described hydrojet passage, as the circulation passage of described compressor refrigerant;
Described electric expansion valve is arranged between the entrance and exit of described hydrojet passage.
4. control system according to claim 1, is characterized in that, described control system also comprises:
Air intake passage, is arranged on the suction side of described compressor, for receiving the returning of evaporation side of described compressorGas.
5. control system according to claim 1, is characterized in that, described control system also comprises:
Described exhaust passage, is arranged on the condensation side of described compressor.
6. control system according to claim 3, is characterized in that, described cold-producing medium is liquid refrigerant.
7. control system according to claim 6, is characterized in that, described liquid refrigerant is logical by described hydrojetThe outlet in road sprays into the suction side of described compressor.
8. control system according to claim 6, is characterized in that, described control system also comprises:
Liquid feeding channel, is connected with described hydrojet passage, logical for described liquid refrigerant being delivered to described hydrojetRoad.
9. a compressor, is characterized in that, comprises the compressor air-discharging temperature described in any one in claim 1 to 8The control system of degree.
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| CN201521117974.4U CN205261842U (en) | 2015-12-25 | 2015-12-25 | Compressor discharge temp's control system and compressor |
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| CN201521117974.4U CN205261842U (en) | 2015-12-25 | 2015-12-25 | Compressor discharge temp's control system and compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106440582A (en) * | 2016-10-18 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method for water-cooling threaded rod unit |
| CN106895620A (en) * | 2017-01-16 | 2017-06-27 | 珠海格力电器股份有限公司 | Spray system control method, device and air-conditioner set |
| CN105465962B (en) * | 2015-12-25 | 2018-07-13 | 珠海格力电器股份有限公司 | Control system, the method and apparatus of compressor exhaust temperature |
| CN108692487A (en) * | 2017-04-11 | 2018-10-23 | 上海汉钟精机股份有限公司 | Compressor electric motor cooling system |
| CN112984737A (en) * | 2021-03-10 | 2021-06-18 | 格力电器（合肥）有限公司 | Multi-split air conditioner control system, multi-split air conditioner control method, multi-split air conditioner, and storage medium |
| CN114909725A (en) * | 2022-05-30 | 2022-08-16 | 格力电器（合肥）有限公司 | High-efficiency energy-saving multi-split system |
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2015
- 2015-12-25 CN CN201521117974.4U patent/CN205261842U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465962B (en) * | 2015-12-25 | 2018-07-13 | 珠海格力电器股份有限公司 | Control system, the method and apparatus of compressor exhaust temperature |
| CN106440582A (en) * | 2016-10-18 | 2017-02-22 | 珠海格力电器股份有限公司 | Control method for water-cooling threaded rod unit |
| CN106440582B (en) * | 2016-10-18 | 2019-05-07 | 珠海格力电器股份有限公司 | The control method of water-cooling screw rod unit |
| CN106895620A (en) * | 2017-01-16 | 2017-06-27 | 珠海格力电器股份有限公司 | Spray system control method, device and air-conditioner set |
| CN106895620B (en) * | 2017-01-16 | 2022-04-01 | 珠海格力电器股份有限公司 | Liquid spraying system control method and device and air conditioning unit |
| CN108692487A (en) * | 2017-04-11 | 2018-10-23 | 上海汉钟精机股份有限公司 | Compressor electric motor cooling system |
| CN112984737A (en) * | 2021-03-10 | 2021-06-18 | 格力电器（合肥）有限公司 | Multi-split air conditioner control system, multi-split air conditioner control method, multi-split air conditioner, and storage medium |
| CN114909725A (en) * | 2022-05-30 | 2022-08-16 | 格力电器（合肥）有限公司 | High-efficiency energy-saving multi-split system |
| CN114909725B (en) * | 2022-05-30 | 2024-03-15 | 格力电器（合肥）有限公司 | Efficient energy-saving multi-split system |
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