CN101109588A - One-master-driving-two air conditioner refrigerating system with constant frequency - Google Patents

One-master-driving-two air conditioner refrigerating system with constant frequency Download PDF

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Publication number
CN101109588A
CN101109588A CNA2006100148396A CN200610014839A CN101109588A CN 101109588 A CN101109588 A CN 101109588A CN A2006100148396 A CNA2006100148396 A CN A2006100148396A CN 200610014839 A CN200610014839 A CN 200610014839A CN 101109588 A CN101109588 A CN 101109588A
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China
Prior art keywords
heat exchanger
capillary
air
air conditioner
refrigerating system
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Pending
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CNA2006100148396A
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Chinese (zh)
Inventor
黄志远
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LG Electronics Tianjin Appliances Co Ltd
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LG Electronics Tianjin Appliances Co Ltd
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Application filed by LG Electronics Tianjin Appliances Co Ltd filed Critical LG Electronics Tianjin Appliances Co Ltd
Priority to CNA2006100148396A priority Critical patent/CN101109588A/en
Publication of CN101109588A publication Critical patent/CN101109588A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a throttle for a refrigerating system of a frequency-fixed two-in-one air conditioner, which combines capillary pipes with solenoid valves, and comprises two capillary pipes and two solenoid valves. The throttle is connected between an indoor heat exchanger and an outdoor heat exchanger. Wherein, the two ends of one capillary pipe are connected with the inlets of two indoor heat exchangers, also with one end of the two solenoid valves; another capillary pipe is connected between the solenoid valves and the outdoor heat exchanger. The refrigerating system in the invention uses the combination of capillary pipes and solenoid valves that are of simple structure and low cost, and realizes the refrigerant flow adjustment for an air conditioner that has relatively fixed combination of indoor units and simple structure.

Description

One-master-driving-two air conditioner refrigerating system with constant frequency
Technical field
The present invention relates to air-conditioner, particularly relate to the air-conditioner refrigerating system that constitutes jointly throttling arrangement by capillary and magnetic valve.
Background technology
Air-conditioner is a kind ofly to regulate indoor temperature and make its electrical Household appliance that remains on the required situation of user, mainly comprises cooling cycle system and air circulation system.Carry out heat exchange to realize room temperature lowering or intensification, for people provide fresh, comfortable air ambient by the cold-producing medium and the indoor flow air that circulate in its refrigeration system.
The cooling cycle system of air-conditioner is made up of evaporimeter, condenser, compressor and throttling arrangement etc., and air circulation system is made up of turnover style grid, air filter, fan and fan electromotor etc.The cooling cycle system of air-conditioner and the operation of air circulation system are controlled by electrical apparatus control system, as the refrigeration of air-conditioner or the setting of heat supply running, dehumidifying operation, air outlet and air inlet Electric Machine Control and fan wind speed control system and room temperature etc.
In summer, the cold-producing medium in the cooling cycle system carries out kind of refrigeration cycle by the order of evaporation → compression → condensation → expansion, realizes the operation of air-conditioner refrigerating state.Promptly, the high temperature and high pressure gaseous refrigerant that spues from compressor is through reversal valve inlet chamber external condenser, condensation heat release in condenser, the liquid refrigerant of warm high pressure in becoming, become the liquid refrigerant of low-temp low-pressure through the throttling arrangement decrease temperature and pressure, the evaporator evaporation heat absorption becomes the gaseous refrigerant of low-temp low-pressure in the inlet chamber again, and carries out heat exchange with the evaporimeter ambient air, then, cold-producing medium returns and proceeds kind of refrigeration cycle again after compressor is compressed into high-temperature high-pressure state.
In cooling cycle system, the effect of throttling arrangement is the step-down cooling, and liquid refrigerant is reduced to evaporating pressure from condensing pressure, is convenient to evaporation heat absorption in evaporimeter.The flow of the cold-producing medium by throttling arrangement just enters the refrigerant flow of evaporimeter, directly influences the refrigerating efficiency of cooling cycle system.Therefore, the throttling arrangement that has can be regulated the flow of the cold-producing medium that is passed through as required, just regulates the refrigerant flow that enters evaporimeter, as electric expansion valve.
Electric expansion valve is by the refrigerant flow control in the chip microcontroller cooling cycle system, and makes air-conditioner be in the refrigerating system control assembly of optimal operational condition.Single-chip microcomputer carries out ratio and integral operation according to given temperature value and room temperature difference, with the aperture of control valve, directly changes the refrigerant flow that enters in the evaporimeter.Thereby in systems such as convertible frequency air-conditioner, fuzzy control air-conditioning and multiloop loop system air-conditioning, electric expansion valve obtains using more widely as the adjusting device according to different operating mode control system refrigerant flows.
In general, the single channel air-conditioning system adopts capillary as throttling arrangement usually.Capillary is made of the thin copper tube of internal diameter, and the cold-producing medium of giving circulation makes high pressure liquid refrigerant step-down and cooling with big resistance, is convenient to evaporation heat absorption in evaporimeter.Capillary pipe structure is simple, and metal material consumption is few, and is easy for installation, reduces the air-conditioner cost, reliable working performance.Yet under the certain situation of compressor, heat exchanger and cold-producing medium, the size of air-conditioner refrigerating capacity depends on length capillaceous and internal diameter, and therefore, the refrigeration system that adopts capillary to make the air-conditioner of throttling arrangement can not be regulated the flow of cold-producing medium.
Fig. 1 is a kind of one-master-driving-two air conditioner refrigerating system with constant frequency structural representation of prior art.
As shown in Figure 1, the refrigeration system of air-conditioner comprises: indoor heat exchanger 1a, 1b, outdoor heat exchanger 2, compressor 3, throttling arrangement 4.During the operation of air-conditioner refrigerating state, the high temperature and high pressure gaseous refrigerant that spues from compressor 3 is through four-way change-over valve 5 inlet chamber external heat exchangers 2 (condenser), the liquid refrigerant of warm high pressure during the condensation heat release becomes in outdoor heat exchanger 2, become the liquid refrigerant of low-temp low-pressure through two expansion throttling parts decrease temperature and pressure of throttling arrangement 4, enter indoor heat exchanger (evaporimeter) 1a more respectively, 1b evaporation heat absorption becomes the gaseous refrigerant of low-temp low-pressure, and carry out heat exchange with indoor heat exchanger (evaporimeter) ambient air, then, cold-producing medium returns and proceeds kind of refrigeration cycle again after compressor 3 is compressed into high-temperature high-pressure state.
The related prior art of Fig. 1 decide typical case's representative that frequency one drag two air-conditioner is indoor set combination relative fixed and air-conditioner simple in structure.This class air-conditioner adopts invariable frequency compressor, can not regulate the displacement of compressor.Yet relatively-stationary combination (one drag two) form needs again the flow of cold-producing medium is carried out some adjusting sometimes, therefore, just wishes to regulate by throttling arrangement the flow of cold-producing medium.
For one-master-driving-two air conditioner refrigerating system with constant frequency shown in Figure 1, if adopt electric expansion valve (LEV), i.e. the import of indoor heat exchanger 1a, 1b connects electric expansion valve respectively, then can realize the refrigerant flow that circulates in the refrigeration system is regulated.But electric expansion valve (LEV) cost is higher.For example, the air-conditioner of 2 indoor sets of a kind of 10Hp adopts electronic expansion valve regulation refrigerant flow, and then system cost rises.If adopt capillary simple in structure, that cost is low to make throttling arrangement, then can not regulate the flow of cold-producing medium again.The combination of deciding frequency one drag two and so on of prior art that Here it is is fixed and the existing realistic problem of air-conditioner simple in structure.
Summary of the invention
The problem of the higher electronic expansion valve regulation refrigerant flow of cost is adopted in existing inconvenience at the air-conditioner of above-mentioned prior art, the present invention has released by capillary and magnetic valve in conjunction with the throttling arrangement of forming, and has realized deciding the indoor set combination relative fixed of frequency one drag two and so on and the refrigerant flow of air-conditioner simple in structure and has regulated problem.
The throttling arrangement of one-master-driving-two air conditioner refrigerating system with constant frequency involved in the present invention is combined by capillary and magnetic valve, comprises two capillaries and two magnetic valves.The throttling arrangement that capillary and magnetic valve are formed is connected between indoor heat exchanger and the outdoor heat exchanger.Wherein, two ends capillaceous are connected with the import of two indoor heat exchangers respectively, and are connected with an end of two magnetic valves respectively simultaneously; Another capillary is connected between magnetic valve and the outdoor heat exchanger.
One-master-driving-two air conditioner refrigerating system with constant frequency involved in the present invention adopts combining of capillary simple in structure, that cost is low and magnetic valve, has realized the refrigerant flow adjusting of indoor set combination relative fixed and air-conditioner simple in structure.
Description of drawings
Fig. 1 is a kind of one-master-driving-two air conditioner refrigerating system with constant frequency structural representation of prior art.
Fig. 2 is an one-master-driving-two air conditioner refrigerating system with constant frequency structural representation of the present invention.
Description of symbols in the accompanying drawing:
1a, 1b: indoor heat exchanger 2: outdoor heat exchanger
3: compressor 4: throttling arrangement
5: four-way change-over valve 6: oil eliminator
7: fluid reservoir 8a: capillary
8b: capillary 9a: magnetic valve
9b: magnetic valve
The specific embodiment
Now further specify the specific embodiment of the present invention in conjunction with the accompanying drawings.As shown in Figure 2, the throttling arrangement of one-master-driving-two air conditioner refrigerating system with constant frequency involved in the present invention is combined by capillary and magnetic valve, comprises two capillary 8a, 8b and two magnetic valve 9a, 9b.The throttling arrangement that capillary and magnetic valve are formed is connected between indoor heat exchanger 1a, 1b and the outdoor heat exchanger 2.Wherein, the two ends of capillary 8a are connected with the import of two indoor heat exchanger 1a, 1b respectively, and be connected with the end of two magnetic valve 9a, 9b respectively simultaneously, the end of the capillary 8a that is connected with the import of indoor heat exchanger 1a connects the end of magnetic valve 9a, and the other end of the capillary 8a that is connected with the import of indoor heat exchanger 1b connects the end of magnetic valve 9b; The end of capillary 8b connects the other end of magnetic valve 9a, 9b simultaneously, the outlet of the other end junction chamber external heat exchanger 2 of capillary 8b.
The operation control logic of one-master-driving-two air conditioner refrigerating system with constant frequency involved in the present invention is as follows:
1, refrigerating operaton logic
When (1) indoor heat exchanger 1a, 1b open, magnetic valve 9a, 9b standard-sized sheet, normal operation;
Magnetic valve 9a singly left when (2) indoor heat exchanger 1a singly opened, and magnetic valve 9b singly left when indoor heat exchanger 1b singly opened, and capillary 8a does not have circulation.
2, heating operation logic
When (1) indoor heat exchanger 1a, 1b open, magnetic valve 9a, 9b standard-sized sheet, normal operation;
Magnetic valve 9a singly left when (2) indoor heat exchanger 1a singly opened, and magnetic valve 9b singly left when indoor heat exchanger 1b singly opened, and capillary 8a has circulation, can guarantee that oil return is normal in idle indoor set.
In above-mentioned logic operation, when the indoor heat exchanger list is opened, only move a compressor; During the indoor heat exchanger standard-sized sheet, move two compressors.

Claims (4)

1. one-master-driving-two air conditioner refrigerating system with constant frequency, comprise indoor heat exchanger, outdoor heat exchanger, compressor and throttling arrangement, it is characterized in that, throttling arrangement is combined by two capillaries (8a, 8b) and two magnetic valves (9a, 9b), the two ends of a capillary (8a) are connected with the import of two indoor heat exchangers (1a, 1b) respectively, and are connected with an end of two magnetic valves respectively simultaneously; Another capillary (8b) is connected between magnetic valve and the outdoor heat exchanger.
2. one-master-driving-two air conditioner refrigerating system with constant frequency according to claim 1 is characterized in that, an end of the capillary (8a) that is connected with the import of indoor heat exchanger (1a) connects an end of magnetic valve (9a).
3. one-master-driving-two air conditioner refrigerating system with constant frequency according to claim 1 is characterized in that, the other end of the capillary (8a) that is connected with the import of indoor heat exchanger (1b) connects an end of magnetic valve (9b)
4. one-master-driving-two air conditioner refrigerating system with constant frequency according to claim 1 is characterized in that, an end of another capillary (8b) connects the other end of two magnetic valves (9a, 9b) simultaneously, the outlet of its other end junction chamber external heat exchanger (2).
CNA2006100148396A 2006-07-19 2006-07-19 One-master-driving-two air conditioner refrigerating system with constant frequency Pending CN101109588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2006100148396A CN101109588A (en) 2006-07-19 2006-07-19 One-master-driving-two air conditioner refrigerating system with constant frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006100148396A CN101109588A (en) 2006-07-19 2006-07-19 One-master-driving-two air conditioner refrigerating system with constant frequency

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CN101109588A true CN101109588A (en) 2008-01-23

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230647A (en) * 2011-05-26 2011-11-02 海尔集团公司 Multi-split air conditioner
CN106440027A (en) * 2016-08-30 2017-02-22 宁波奥克斯电气股份有限公司 Invariable frequency one-drive-two air conditioning unit
CN107532576A (en) * 2015-03-25 2018-01-02 赛峰航空器发动机 A kind of flow rate regulating device and method
CN111006353A (en) * 2019-11-06 2020-04-14 宁波奥克斯电气股份有限公司 Oil return control method and device of fixed-frequency air conditioner and fixed-frequency air conditioner
WO2021169672A1 (en) * 2020-02-28 2021-09-02 青岛海尔空调电子有限公司 One-driving-two air conditioner and control method therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230647A (en) * 2011-05-26 2011-11-02 海尔集团公司 Multi-split air conditioner
CN107532576A (en) * 2015-03-25 2018-01-02 赛峰航空器发动机 A kind of flow rate regulating device and method
CN106440027A (en) * 2016-08-30 2017-02-22 宁波奥克斯电气股份有限公司 Invariable frequency one-drive-two air conditioning unit
CN106440027B (en) * 2016-08-30 2022-03-22 宁波奥克斯电气股份有限公司 Fixed frequency one-driving-two air conditioning unit
CN111006353A (en) * 2019-11-06 2020-04-14 宁波奥克斯电气股份有限公司 Oil return control method and device of fixed-frequency air conditioner and fixed-frequency air conditioner
WO2021169672A1 (en) * 2020-02-28 2021-09-02 青岛海尔空调电子有限公司 One-driving-two air conditioner and control method therefor

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