CN102147141A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

Info

Publication number
CN102147141A
CN102147141A CN2011100361542A CN201110036154A CN102147141A CN 102147141 A CN102147141 A CN 102147141A CN 2011100361542 A CN2011100361542 A CN 2011100361542A CN 201110036154 A CN201110036154 A CN 201110036154A CN 102147141 A CN102147141 A CN 102147141A
Authority
CN
China
Prior art keywords
pressure
cold
producing medium
expansion valve
appointment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011100361542A
Other languages
Chinese (zh)
Other versions
CN102147141B (en
Inventor
裴动锡
金经录
李在吉
李昌宣
权亨珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020100011651A priority Critical patent/KR20110092147A/en
Priority to KR10-2010-0011651 priority
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CN102147141A publication Critical patent/CN102147141A/en
Application granted granted Critical
Publication of CN102147141B publication Critical patent/CN102147141B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/10Pressure
    • F24F2140/12Heat-exchange fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/193Pressures of the compressor
    • F25B2700/1931Discharge pressures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/193Pressures of the compressor
    • F25B2700/1933Suction pressures

Abstract

Disclosed herein are an air conditioner which controls a pressure of a refrigerant of an outdoor unit by adjusting an opening degree of an outdoor expansion valve or an indoor expansion valve, and a control method thereof. The air conditioner measures a pressure of the refrigerant discharged from a compressor during a cooling operation, and raises the pressure of the refrigerant to be higher than a designated pressure by controlling an opening degree of at least one of the outdoor expansion valve and the indoor expansion valve, if the pressure of the refrigerant is lower than the designated pressure. Further, the air conditioner measures the pressure of the refrigerant inhaled into the compressor during a heating operation, and adjusts the pressure of the refrigerant to be lower than a designated pressure by controlling the opening degree of the outdoor expansion valve, if the pressure of the refrigerant is higher than the designated pressure.

Description

Air-conditioning and control method thereof
Technical field
Embodiment relates to a kind of air-conditioning and control method thereof of regulating room air.
Background technology
In general, air-conditioning is a refrigerating/heating equipment, the air of the interior space in this refrigerating/heating apparatus cools or heating such as office or room, and form a series of circulations of forming by compression, condensation, expansion, evaporation.Such air-conditioning mainly utilizes the air of the interior space that the heat of condensation or heat of evaporation are discharged into the exterior space.
According to the kind of thermal source with air-conditioning be divided into utilize air as the air-cooled type air-conditioning of thermal source, utilize water as the water-cooled air-conditioning of thermal source and the geothermal air-conditioning that utilizes underground thermal source (lake or river).
In addition, well-known, air-conditioning quilt is divided into: integral air conditioner, regulate the interior space air indoor unit and be formed on the integral air conditioner with outdoor unit from the cold-producing medium heat-shift of indoor unit circulation; Split-type air conditioner, indoor unit and outdoor unit are separated from each other in split-type air conditioner, make indoor unit be installed in the interior space, and outdoor unit are installed in the exterior space.
Summary of the invention
Therefore, provide on the one hand a kind of air-conditioning and control method thereof, the aperture of described air-conditioning control electric expansion valve remains in high pressure range or the low pressure range with the pressure with the cold-producing medium of outdoor unit.
With other aspects of part illustrated embodiments below, part will be clear from the description maybe and can understand by the practice of embodiment.
According to one side, a kind of control method of air-conditioning, described air-conditioning comprises outdoor unit and indoor unit, outdoor unit comprises compressor and outdoor expansion valve, indoor unit comprises indoor expansion valve, and described method comprises: measure during refrigerating operation from the pressure of the cold-producing medium of compressor discharge; If the pressure of the pressure ratio appointment of cold-producing medium is low, then make the pressure of cold-producing medium be elevated to pressure height than appointment by at least one the aperture in control outdoor expansion valve and the indoor expansion valve.
If the pressure of the pressure ratio appointment of cold-producing medium is low, the aperture that can come expansion valve in the control room by the target degree of superheat of regulating indoor unit then.
If the pressure of the pressure ratio appointment of cold-producing medium is low, then can reduce the aperture of indoor expansion valve by the target degree of superheat that increases indoor unit.
If the pressure of the pressure ratio appointment of cold-producing medium is low, then can make the pressure of cold-producing medium be elevated to pressure height by reducing at least one aperture in outdoor expansion valve and the indoor expansion valve than appointment.
Outdoor unit also can comprise receiver, if the pressure of the pressure ratio appointment of cold-producing medium is low, and then can be by being transferred to the pressure that receiver improves the cold-producing medium that is transferred to indoor unit from the gases at high pressure of compressor discharge.
Can detect the degree of superheat of the cold-producing medium of the entrance side that is transferred to compressor,, then can improve the degree of superheat of the cold-producing medium of the entrance side that is transferred to compressor by the aperture that reduces indoor expansion valve if the degree of superheat is lower than the reference of appointment.
According on the other hand, a kind of control method of air-conditioning, described air-conditioning has outdoor unit and indoor unit, outdoor unit comprises compressor and outdoor expansion valve, indoor unit comprises indoor expansion valve, and described method comprises: be inhaled into the pressure of the cold-producing medium in the compressor heating the operating period measurement; If the pressure height of the pressure ratio appointment of cold-producing medium, it is lower than the pressure of appointment then by the aperture of controlling outdoor expansion valve the pressure of cold-producing medium to be reduced to.
If the pressure height of the pressure ratio appointment of cold-producing medium then can reduce by the aperture that reduces outdoor expansion valve along the amount that cold-producing medium is drawn into the cold-producing medium that the direction in the compressor flows.
Can control the aperture of outdoor expansion valve by the degree of superheat of regulating indoor unit.
According on the other hand, a kind of air-conditioning comprises: pressure sensor is installed in the refrigerant outlet side of compressor, to measure the pressure of cold-producing medium; The control module of outdoor unit, if the pressure of the pressure ratio appointment of cold-producing medium is low during refrigerating operation, then the control module of outdoor unit makes the pressure of cold-producing medium be elevated to pressure height than appointment by the aperture of control outdoor expansion valve.
If the pressure of the pressure ratio appointment of cold-producing medium is low, then the control module of outdoor unit can make the pressure of cold-producing medium be elevated to pressure height than appointment by the aperture that reduces outdoor expansion valve.
Air-conditioning also can comprise the control module of indoor unit, if the pressure of the pressure ratio appointment of cold-producing medium is low, then the aperture of the control module of indoor unit by expansion valve in the control room makes the pressure of cold-producing medium be elevated to pressure height than appointment.
If the pressure of the pressure ratio appointment of cold-producing medium is low, then the control module of indoor unit can make the pressure of cold-producing medium be elevated to pressure height than appointment by the aperture that reduces indoor expansion valve.
The control module of indoor unit can reduce the aperture of indoor expansion valve by the target degree of superheat of regulating indoor unit.
The control module of indoor unit can reduce the aperture of indoor expansion valve by the target degree of superheat that increases indoor unit.
Air-conditioning also can comprise: pressure sensor is installed in the refrigerant inlet side of compressor, to measure the pressure of cold-producing medium; The control module of indoor unit, receive the data relevant heating the pressure sensor of operating period with the pressure of cold-producing medium from the refrigerant inlet side that is installed in compressor, if the pressure height of the pressure ratio appointment of cold-producing medium, then that the pressure of cold-producing medium is adjusted to is lower than the pressure of appointment for the control module of the indoor unit target degree of superheat that is inhaled into the cold-producing medium in the compressor by control.
Description of drawings
By the description of embodiment being carried out below in conjunction with accompanying drawing, these of embodiment and/or other aspects will become clear and should be readily appreciated that more, wherein:
Fig. 1 is the schematic diagram that illustrates according to the water-cooled installation of air conditioners state of an embodiment;
Fig. 2 is the block diagram that illustrates according to the structure of the air-conditioning of embodiment;
Fig. 3 is the control block diagram according to the air-conditioning of embodiment;
Fig. 4 illustrates the flow chart of method that the aperture of passing through during the refrigerating operation of air-conditioning the control outdoor expansion valve according to an embodiment keeps the high pressure of cold-producing medium;
Fig. 5 is the flow chart of method that the aperture that heats operating period control outdoor expansion valve at air-conditioning keeps the low pressure of cold-producing medium that passes through that illustrates according to another embodiment;
Fig. 6 be illustrate according to another embodiment during the refrigerating operation of air-conditioning by the control room in the aperture of expansion valve keep the flow chart of method of the high pressure of cold-producing medium;
Fig. 7 is the flow chart of method of regulating the degree of superheat of the cold-producing medium that compressor sucks during the refrigerating operation of air-conditioning by the degree of superheat of control indoor unit that illustrates according to another embodiment.
The specific embodiment
Now, will describe embodiment in detail, its example is shown in the drawings, and wherein, identical label is indicated components identical all the time.
Fig. 1 is the schematic diagram that illustrates according to the water-cooled installation of air conditioners state of an embodiment, and Fig. 2 is the module map that illustrates according to the structure of the air-conditioning of embodiment.
See figures.1.and.2, the water-cooled air-conditioning quilt is installed as the air that is used to regulate the interior space in the heavy construction that is provided with a plurality of interior spaces or the skyscraper.Therefore, the building that the water-cooled air-conditioning is installed is provided with a plurality of interior spaces, and the water-cooled air-conditioning is used to regulate the air of described a plurality of interior spaces.
In air-conditioning according to present embodiment, indoor unit 100 is mounted respectively in a plurality of interior spaces in being arranged on building, air conditioning room A is arranged on the sidepiece of the interior space that is separately installed with indoor unit 100, is installed among the air conditioning room A with the outdoor unit 200 that described a plurality of indoor units 100 are connected by pipeline.
In each interior space, indoor unit 100 is installed with the form that is suitable for each interior space, thereby regulates the air in each interior space.That is, can select to use the indoor unit 100 (that is vertical, lift-on/lift-off type, wall-hanging) of various patterns according to the user.By refrigerant pipe 300 these indoor units 100 are connected with outdoor unit 200, refrigerant pipe 300 guides flowing of cold-producing medium between indoor unit 100 and outdoor unit 200.
Refrigerant pipe 300 is installed to be and connects indoor unit 100 and outdoor unit 200, and forms the round tube shape with designated diameter, makes as the cold-producing medium of working fluid mobile along the inner space of refrigerant pipe 300.Therefore, refrigerant pipe 300 branches of refrigerant pipe 300 from being connected to outdoor unit 200, and be connected to each indoor unit 100.
Be used to make water cooling to be installed in the top of building with the cooling tower 400 that produces cooling water, the water-cooled air-conditioning is installed in this building.Cooling tower 400 makes water directly contact with air, thereby makes water cooling, to produce cooling water.
The cooling water that will produce in the inner space of cooling tower 400 by cooling water tube 420 is directed to the inner space of outdoor unit 200.Cold-producing medium heat-shift in cooling water and the outdoor unit 200 is directed to the upper end of cooling tower 400 by cooling water recovery tube 440 with cooling water, and cooling water is cooled in cooling tower 400 again, and then, flow of cooling water is to the inner space of outdoor unit 200.This process is repeated.
Cooling water pump 460 is installed on the cooling water tube 420, and will be fed to the inner space of outdoor unit 200 from the cooling water that cooling tower 400 produces with constant compression force.
Indoor heat converter 120 is installed in the indoor unit 100, and indoor heat converter 120 is used for sucking or discharging the air of the interior space and carries out inhaled air and the heat exchange of cold-producing medium, to regulate the air in the interior space.Form indoor heat converter 120 by the pipe bended several times that will have designated diameter, mobile in indoor heat converter 120 as the cold-producing medium of working fluid.
Indoor expansion valve 140 is arranged in the indoor unit 100, and indoor expansion valve 140 is used for regulating the amount of the cold-producing medium that is introduced in indoor heat converter 120 or regulates from the amount of the cold-producing medium of indoor heat converter 120 dischargings.Indoor expansion valve 140 expands the cold-producing medium by indoor expansion valve 140, thereby has reduced the pressure of cold-producing medium.
Refrigerant pipe 300 is connected between indoor unit 100 and the outdoor unit 200, makes cold-producing medium pass through refrigerant pipe 300 circulations.Refrigerant pipe 300 comprises: high-voltage tube, and high-pressure refrigerant flows by high-voltage tube; Low-voltage tube, low pressure refrigerant flows by low-voltage tube.Be connected to each indoor unit 100 after being connected to refrigerant pipe 300 branches of outdoor unit 200, thereby cold-producing medium be directed to the inside of indoor heat converter 120.
Therefore, the cold-producing medium that flows along refrigerant pipe 300 is introduced in the outdoor unit 200, and with cooling water heat-shift by cooling water tube 420 guiding, the cold-producing medium of heat-shift moves to the inside of indoor heat converter 120 along refrigerant pipe 300, and with the air exchange heat of the interior space that is separately installed with indoor unit 100, therefore, the air in the adjusting interior space.
In addition, with outdoor unit 200 in the cooling water of cold-producing medium heat-shift flow to the inner space of cooling tower 400 along cooling water recovery tube 440, therefore form a circulation.
With reference to Fig. 2, will the internal structure of outdoor unit 200 be described in further detail.Oil eliminator 265 and cold-producing medium high pressure sensor 241 are arranged on the outlet side of compressor 260.Oil eliminator 265 will be contained in the cold-producing medium that is compressed into the HTHP attitude in compressor 260 and separate with cold-producing medium with the oil that cold-producing medium is discharged into compressor 260 outsides.Cold-producing medium high pressure sensor 241 is installed in the high-voltage tube, and measures from the high pressure of the cold-producing medium of compressor 260 dischargings.
Oil eliminator 265 forms the cylindrical shape with designated diameter and height.Oil eliminator 265 makes oil flow in compressor 260, because of the frictional heat that the driving of compressor 260 produces, flow to the outside that oil in the compressor 260 is contained in the cold-producing medium that is compressed into the HTHP attitude in compressor 260 and is discharged into compressor 260 with cooling.To be contained in the cold-producing medium and the oil that is discharged into the outside of compressor 260 separates with cold-producing medium by oil eliminator 265, described oil returns compressor 260 by oily recovery tube 271.
Oil eliminator 265 is connected to cold-producing medium control valve 270 by pipeline.Cold-producing medium control valve 270 uses cross valve, and is used for the flow direction according to the mode transitions cold-producing medium of water-cooled air-conditioning.In the port of cold-producing medium control valve 270, a port is connected to oil eliminator 265, and all the other ports are connected to indoor heat converter 120, outdoor heat converter 230, reservoir 264 by pipeline.
An end that a port in the port of cold-producing medium control valve 270 is connected to the pipeline of outdoor heat converter 230 is connected to refrigerant inlet side 233, cold-producing medium is incorporated in the inner space of outdoor heat converter 230 by refrigerant inlet side 233, by pipeline refrigerant outlet side 234 is connected to indoor heat converter 120, by refrigerant outlet side 234 will be by refrigerant inlet side 233 be introduced in the outdoor heat converter 230 and with outdoor heat converter 230 in the cold-producing medium of cooling water heat-shift from outdoor heat converter 230 dischargings.
Outdoor expansion valve 280 is installed on refrigerant outlet side 234 and the pipeline that indoor heat converter 120 is connected.
Be used to make the cold excessively subcooler of cold-producing medium 282 to be arranged between outdoor expansion valve 280 and the indoor heat converter 120.Subcooler 282 is to be used for making the supercooled device of cold-producing medium that has heat-shift at indoor heat converter 120 or outdoor heat converter 230.
The reservoir 264 that is used for temporary transient store refrigerant is arranged on the pipeline between indoor heat converter 120 and the compressor 260.The cold-producing medium of reservoir 264 from be introduced in compressor 260 isolated gaseous refrigerant, makes to have only the cold-producing medium of gaseous state to flow in the compressor 260.Reservoir 264 is temporary transient to be stored from outdoor heat converter 230 or indoor heat converter 120 and is incorporated into cold-producing medium the entrance side of compressor 260.Reservoir 264 is divided into gaseous refrigerant and liquid refrigerant with the cold-producing medium that is introduced into.Be inhaled into the low-pressure inlet side of compressor 260 by the gaseous refrigerant of reservoir 264 separation.
Cold-producing medium low pressure sensor 242 and temperature sensor 243 are arranged between reservoir 264 and the compressor 260.Cold-producing medium low pressure sensor 242 is measured the low pressure of the cold-producing medium of the entrance side that is introduced in compressor 260, and temperature sensor 243 is measured the temperature of the cold-producing medium of the entrance side that is introduced in compressor 260.
Utilize water as heat exchange source and the water-cooled air-conditioning that flow to the cold-producing medium heat-shift in the outdoor heat converter 230 though Fig. 1 and Fig. 2 show, embodiment may be used on utilizing the geothermal air-conditioning of underground heat as the heat exchange source.The geothermal air-conditioning quilt imbed underground or the surface water such as lake or river under, with the heat source water heat-shift, except the geothermal air-conditioning uses underground heat as the heat exchange source, the geothermal air-conditioning has the structure identical construction with the water-cooled air-conditioning.
Fig. 3 is the control module figure according to the air-conditioning of embodiment.
Outdoor unit 200 comprises sensor unit 201, control module 202, memory cell 203, communication unit 205, driver element 204, and indoor unit 100 comprises sensor unit 101, control module 102, memory cell 103, communication unit 105, driver element 104.
The sensor unit 201 of outdoor unit 200 comprises cold-producing medium high pressure sensor 241, cold-producing medium low pressure sensor 242, temperature sensor 243.Cold-producing medium high pressure sensor 241 is installed in the outlet side of compressor 260, and measures from the high pressure of the cold-producing medium of compressor 260 dischargings.Cold-producing medium low pressure sensor 242 is installed in the entrance side of compressor 260, and measures the low pressure that is inhaled into the cold-producing medium in the compressor 260.Temperature sensor 243 is installed in the entrance side of compressor 260, and measures the temperature of cold-producing medium.
The control module 202 of outdoor unit 200 is controlled at the pressure of the cold-producing medium of outdoor unit 200 in the high pressure range of appointment during refrigerating operation.The control module 202 of outdoor unit 200 according to the aperture from the relevant outdoor expansion valve 280 of Data Control of the high pressure with cold-producing medium of cold-producing medium high pressure sensor 241 transmission, therefore remains on the high pressure of cold-producing medium the level of appointment during refrigerating operation.The control module 202 of outdoor unit 200 detects from the high pressure of the cold-producing medium of compressor 260 dischargings by cold-producing medium high pressure sensor 241, if the high pressure ratio reference pressure of cold-producing medium is low, then reduces the aperture of outdoor expansion valve 280, the high pressure of the cold-producing medium that therefore raises.If the aperture of outdoor expansion valve 280 reduces, then be discharged into the amount minimizing of the cold-producing medium of container 290 from outdoor heat converter 230, therefore, the amount of the cold-producing medium between compressor 260 and the outdoor heat converter 230 increases, and the pressure of cold-producing medium that is positioned at the outlet side of compressor 260 raises.
The control module 202 of outdoor unit 200 detects from the high pressure of the cold-producing medium of compressor 260 dischargings by cold-producing medium high pressure sensor 241, if the high pressure ratio reference pressure of cold-producing medium is low, then the gases at high pressure with compressor 260 are transferred to container 290.When gases at high pressure were supplied to container 290, the pressure that outputs to the cold-producing medium of indoor unit 100 from container 290 raise, thereby the performance that prevents indoor unit 100 descends.
The control module 202 of outdoor unit 200 is controlled in the low pressure range of appointment heating the pressure of operating period with the cold-producing medium of outdoor unit 200.Therefore the control module 202 of outdoor unit 200, remains on the low pressure of cold-producing medium the level of appointment heating operating period according to the aperture from the relevant outdoor expansion valve 280 of Data Control of the low pressure with cold-producing medium of cold-producing medium low pressure sensor 242 transmission.The control module 202 of outdoor unit 200 utilizes cold-producing medium low pressure sensor 242 to detect from the low pressure of the cold-producing medium of compressor 260 dischargings, if the low-pressure ratio reference pressure height of cold-producing medium then reduces the aperture of outdoor expansion valve 280, thereby reduces the low pressure of cold-producing medium.If the aperture of outdoor expansion valve 280 reduces, then flow to the amount minimizing of the cold-producing medium of outdoor heat converter 230 from container 290, therefore, the amount that flow to the cold-producing medium of reservoir 264 by outdoor heat converter 230 reduces, and the pressure of cold-producing medium that is positioned at the entrance side of compressor 260 reduces.
The control module 202 of outdoor unit 200 is heating operating period according to the degree of superheat of regulating the cold-producing medium of compressor 260 suctions from the relevant data of the low pressure with cold-producing medium of cold-producing medium low pressure sensor 242 transmission, thus the aperture of control outdoor expansion valve 280.The degree of superheat of the cold-producing medium that compressor 260 sucks obtains by following expression 1.
Expression formula 1
The saturation temperature of the cold-producing medium of the temperature-suction of the cold-producing medium of the degree of superheat=suction of the cold-producing medium that sucks
In expression formula 1, the temperature sensor 243 of the entrance side of the temperature of the cold-producing medium that sucks by being installed in compressor 260 is measured, and the saturation temperature of the cold-producing medium of suction is determined by the pressure of the cold-producing medium that the cold-producing medium low pressure sensor 242 of the entrance side by being installed in compressor 260 is measured.Saturation temperature according to the pressure of cold-producing medium is stored in the memory cell 203 in advance.For example, the pressure when the cold-producing medium of being measured by cold-producing medium low pressure sensor 242 is 7kg/cm 2The time, the saturation temperature corresponding with this pressure that is stored in advance in the memory cell 203 is about 0 ℃.Hereinafter, will method that control the aperture of outdoor expansion valve 280 by the degree of superheat of regulating the cold-producing medium that sucks be described.
The control module 202 of outdoor unit 200 utilizes cold-producing medium low pressure sensor 242 to detect the low pressure that is inhaled into the cold-producing medium in the compressor 260, if the low-pressure ratio reference pressure height of cold-producing medium, the then degree of superheat of the cold-producing medium of increase suction.In order to increase the degree of superheat of the cold-producing medium that compressor 260 sucks, reduce the aperture of outdoor expansion valve 280.If the aperture of outdoor expansion valve 280 reduces, then flow to the amount minimizing of the cold-producing medium of outdoor heat converter 230 from container 290, cold-producing medium carries out the heat exchange of big degree in outdoor heat converter 230, thereby the temperature of cold-producing medium is raise, and the cold-producing medium with temperature of rising flows to compressor 260 by reservoir 264.In this processing procedure, the temperature of the cold-producing medium that compressor 260 sucks raises, and therefore, with reference to expression formula 1, the degree of superheat of the cold-producing medium that compressor 260 sucks increases.In addition, if the aperture of outdoor expansion valve 280 reduces, then the pressure of the cold-producing medium that sucks of compressor 260 is lowered by said process, thereby the pressure of the cold-producing medium that the cold-producing medium low pressure sensor 242 of the entrance side by being installed in compressor 260 is measured can reduce.
Memory cell 203 storages of outdoor unit 200 are according to the saturation temperature of the pressure of cold-producing medium.
The communication unit 205 of outdoor unit 200 receives from the data of indoor unit 100 transmission, perhaps transfer of data is arrived indoor unit 100.
The driver element 204 of outdoor unit 200 is drive compression machine 260 and outdoor expansion valve 280 under the control of control module 202.
The sensor unit 101 of indoor unit 100 comprises temperature sensor 161 and 162.The temperature sensor 161 and 162 of sensor unit 101 is installed in the entrance side and the outlet side of indoor heat converter 120, and measures the temperature of cold-producing medium.
The control module 102 of indoor unit 100 during refrigerating operation according to aperture from the relevant indoor expansion valve 140 of Data Control of the high pressure with cold-producing medium of communication unit 205 transmission of outdoor unit 200, thereby the high pressure of the cold-producing medium of outdoor unit 200 is remained on the level of appointment.The communication unit 105 of indoor unit 100 receives from the data of outdoor unit 200 transmission by communication unit 205, and the control module 102 of indoor unit 100 is according to the aperture of the indoor expansion valve 140 of Data Control that transmits from outdoor unit 200.If the aperture of indoor expansion valve 140 reduces, the amount that then is input to the cold-producing medium of indoor unit 100 reduces, reduce if be input to the amount of the cold-producing medium of indoor unit 100, the amount that then rests on the cold-producing medium in the outdoor unit 200 increases, thereby the pressure of the cold-producing medium of outdoor unit 200 is raise.
The degree of superheat that the degree of superheat of the cold-producing medium that the control module 102 of indoor unit 100 sucks according to the compressor 260 from communication unit 205 transmission of outdoor unit 200 is regulated indoor unit 100, thus the pressure of the cold-producing medium of outdoor unit 200 is remained on the high pressure of appointment.The degree of superheat of the cold-producing medium that compressor 260 sucks obtains by above-described expression formula 1, and the degree of superheat of indoor unit 100 obtains by following expression 2.
Expression formula 2
The inlet temperature of the outlet temperature-indoor heat converter of the degree of superheat=indoor heat converter of indoor unit
In expression formula 2, the outlet of indoor heat converter 120 refers to such side surface of indoor heat converter 120: cold-producing medium is discharged into the outside of indoor heat converter 120 by this side surface during refrigerating operation, and the inlet of indoor heat converter 120 refers to such side surface of indoor heat converter: cold-producing medium is incorporated in the indoor heat converter 120 by this side surface during refrigerating operation.Hereinafter, the degree of superheat of describing the cold-producing medium that sucks according to compressor 260 in detail is adjusted to the pressure of the cold-producing medium of outdoor unit 200 by the degree of superheat of regulating indoor unit 100 method of the high pressure of appointment.
If the degree of superheat of the cold-producing medium that compressor 260 sucks during refrigerating operation reduces, then the control module 202 of outdoor unit 200 is transferred to the control module 102 of indoor unit 100 with data designated, thereby increases the degree of superheat of indoor unit 100.In order to increase the degree of superheat of indoor unit 100, need reduce the aperture of indoor expansion valve 140.If the aperture of indoor expansion valve 140 reduces, the amount that then is introduced in the cold-producing medium of indoor heat converter 120 reduces, if being introduced in the amount of the cold-producing medium of indoor heat converter 120 reduces, then cold-producing medium will carry out the heat exchange of big degree in indoor heat converter 120, therefore, the temperature of cold-producing medium raises under the more situation when the temperature of cold-producing medium increases such as the amount of fruit cold-producing medium, by the outlet refrigerant emission of indoor heat converter 120.(during refrigerating operation, the temperature of the outlet side of indoor heat converter is than the temperature height of the entrance side of indoor heat converter).With reference to expression formula 2, should be appreciated that it is more that the temperature of the outlet of indoor heat converter 120 raises, thereby the degree of superheat of indoor unit 100 is increased.In addition, because the temperature that is transferred to the cold-producing medium of outdoor unit 200 from indoor unit 100 raises, therefore, the temperature of cold-producing medium that flow to the entrance side of compressor 260 raises, thereby the degree of superheat of the cold-producing medium of the suction of expression formula 1 increases.
On the other hand,, should be appreciated that the reason that the degree of superheat of the cold-producing medium of suction reduces is that the temperature of the cold-producing medium that sucks reduces or the saturation temperature of the cold-producing medium that sucks raises with reference to expression formula 1.Hereinafter, because the saturation temperature of the cold-producing medium that sucks has the much smaller variation of variation of temperature than the cold-producing medium that sucks, therefore, the situation that the temperature of exemplarily describing the cold-producing medium that sucks is lowered.
If be transferred to the amount big (a large amount of cold-producing mediums causes a little less than the evaporation degree) of the cold-producing medium of outdoor unit 200 from indoor heat converter 120, if perhaps the cold-producing medium that causes carrying out weak heat exchange because of the load abnormal of indoor heat converter 120 is transferred to outdoor unit 200, then the temperature of the cold-producing medium of Xi Ruing is lowered.Under the former situation, the cold-producing medium of outdoor unit 200 can be high pressure conditions (perhaps can be low-pressure state), and in the latter case, the pressure of the cold-producing medium of outdoor unit 200 can be high pressure conditions or low-pressure state.Therefore, if the pressure of the cold-producing medium of outdoor unit 200 is low and the degree of superheat of the cold-producing medium that compressor 260 sucks is low, then the control module 102 of indoor unit 100 can be adjusted to high level with the degree of superheat of indoor unit 100.As mentioned above, if the degree of superheat of indoor unit 100 is adjusted to high level, the aperture of then indoor expansion valve 140 reduces, if the aperture of indoor expansion valve 140 reduces, the amount that then rests on the cold-producing medium in the outdoor unit 200 increases, thereby the pressure of the cold-producing medium of outdoor unit 200 is raise.On the other hand, if the pressure height of the cold-producing medium of outdoor unit 200 then can increase the degree of superheat of the cold-producing medium that compressor 260 sucks by the degree of superheat that increases indoor unit 100.Here, can come the pressure of the cold-producing medium of further rising outdoor unit 200, but normally regulate the pressure of the cold-producing medium of outdoor unit 200 by independent control method by the aperture that reduces indoor expansion valve 140.
The communication unit 105 of indoor unit 100 receives from the data of outdoor unit 200 transmission, perhaps with the communication unit 205 of transfer of data to outdoor unit 200.
The various data that memory cell 103 storages of indoor unit 100 are used to operate indoor unit 100.The degree of superheat that memory cell 103 storages of indoor unit 100 are regulated according to the degree of superheat of the cold-producing medium of compressor 260 suctions.Expansion valve 140 etc. in driver element 104 drive chamber of indoor unit 100.
Fig. 4 illustrates the flow chart of method that the aperture of passing through during the refrigerating operation of air-conditioning the control outdoor expansion valve according to an embodiment keeps the high pressure of cold-producing medium.
When the beginning refrigerating operation, the control module 202 of outdoor unit 200 is adjusted to S1 (operation 500) with the aperture of outdoor expansion valve 280.
Afterwards, the control module 202 of outdoor unit 200 receives from the relevant data (operation 501) of the high pressure with cold-producing medium of cold-producing medium high pressure sensor 241 transmission of the refrigerant outlet side that is installed in compressor 260.
Afterwards, the high pressure P h of the cold-producing medium that the control module 202 of outdoor unit 200 will be measured during operation 501 and the first reference pressure P1 be (operation 502) relatively, if the high pressure P h of cold-producing medium is lower than the first reference pressure P1, then the aperture with outdoor expansion valve 280 is adjusted to S2 (operation 503).That is, the control module 202 of outdoor unit 200 reduces the aperture of outdoor expansion valve 280, thus the pressure of the cold-producing medium of rising outdoor unit 200.
On the other hand, if the high pressure P h of cold-producing medium is than the first reference pressure P1 height, then the control module 202 of outdoor unit 200 relatively (operates 504) with the high pressure P h and the second reference pressure P2 of cold-producing medium, if the high pressure P h of cold-producing medium is than the second reference pressure P2 height, then the aperture with outdoor expansion valve 280 is adjusted to S3 (operation 505).That is, the control module 202 of outdoor unit 200 increases the aperture of outdoor expansion valve 280, thereby reduces the pressure of the cold-producing medium of outdoor unit 200.
In addition, if the high pressure P h of cold-producing medium is lower than the second reference pressure P2, then the control module 202 of outdoor unit 200 remains on S1 (operation 506), this process return 500 then with the aperture of outdoor expansion valve 280.
Here, S1, S2, S3 represent the aperture of outdoor expansion valve 280, for example, satisfy inequality S2<S1<S3.In addition, when satisfying inequality P1<Ph<P2, the control module 202 of outdoor unit 200 judges that air-conditionings arrive normal conditions.
Fig. 5 is the flow chart of method that the aperture that heats operating period control outdoor expansion valve at air-conditioning keeps the low pressure of cold-producing medium that passes through that illustrates according to another embodiment.
When beginning to heat operation, the control module 202 of outdoor unit 200 is adjusted to SH1 with the aperture of outdoor expansion valve 280.The aperture of outdoor expansion valve 280 is adjusted to the aperture that SH1 refers to the degree of superheat adjusting outdoor expansion valve 280 of the cold-producing medium that sucks according to compressor 260.That is, the control module 202 of outdoor unit 200 is regulated the aperture (operation 510) of outdoor expansion valve 280 according to the degree of superheat of the cold-producing medium of compressor 260 suctions.
Afterwards, the control module 202 of outdoor unit 200 receives from the relevant data of the low pressure with cold-producing medium of cold-producing medium low pressure sensor 242 transmission of the refrigerant inlet side that is installed in compressor 260.Cold-producing medium low pressure sensor 242 is mounted in the pressure sensor (operation 511) of the entrance side of compressor 260.
Afterwards, the low pressure PL of the cold-producing medium that the control module 202 of outdoor unit 200 will be measured during operation 511 and the 3rd reference pressure P3 be (operation 512) relatively, if the low pressure PL of cold-producing medium is lower than the 3rd reference pressure P3, then the aperture with outdoor expansion valve 280 remains on SH1 or is adjusted to SH1 (operation 514).
On the other hand, if the low pressure PL of cold-producing medium is than the 3rd reference pressure P3 height, then the control module 202 of outdoor unit 200 will relatively (operate 513) by the low pressure PL and the 4th reference pressure P4 of the cold-producing medium of measurement during operation 511, if the low pressure PL of cold-producing medium is lower than the 4th reference pressure P4, then the aperture of outdoor expansion valve 280 is adjusted to the SH2 aperture of 10 ℃ overheated adjusting outdoor expansion valve 280 (for example, according to) (operation 515).That is, the control module 202 of outdoor unit 200 reduces the aperture of outdoor expansion valve 280, thereby reduces the pressure of the cold-producing medium of outdoor unit 200.
In addition, if the low pressure PL of the cold-producing medium of measuring during operation 511 is than the 4th reference pressure P4 height, then the control module 202 of outdoor unit 200 is adjusted to the SH3 aperture of 15 ℃ overheated adjusting outdoor expansion valve 280 (for example, according to) (operation 513 and operation 516) with the aperture of outdoor expansion valve 280.
Here, SH1, SH2, SH3 refer to the target degree of superheat of the aperture that is used to regulate outdoor expansion valve 280, for example, satisfy inequality SH1<SH2<SH3.
Fig. 6 be illustrate according to another embodiment during the refrigerating operation of air-conditioning by the control room in the aperture of expansion valve keep the flow chart of method of the high pressure of cold-producing medium.
When the beginning refrigerating operation, the control module 102 of indoor unit 100 is adjusted to ID_SH1 with the aperture of indoor expansion valve 140.It is overheated that ID_SH1 (indoor overheating 1) refers to the target that is used for the aperture of expansion valve 140 in the control room.For example, the aperture by expansion valve in the conditioning chamber 140 realizes the aperture of indoor expansion valve 140 is adjusted to ID_SH1, thereby indoor unit 100 is controlled at 2 ℃ overheated (operations 520).
Afterwards, the control module 102 of indoor unit 100 receives communication unit 205 data relevant with the high pressure of the cold-producing medium outlet side that is positioned at compressor 260 transmission (operation 521) from outdoor unit 200.
Afterwards, the control module 102 of indoor unit 100 is examined pressure P 5 relatively (operation 522) with the high pressure P h and the Wucan of cold-producing medium, if it is low that the high pressure P h of cold-producing medium examines pressure P 5 than Wucan, then the aperture with indoor expansion valve 140 is adjusted to ID_SH2 (operation 523).That is, the control module 102 of indoor unit 100 reduces the aperture of indoor expansion valve 140, thus the pressure of the cold-producing medium of rising outdoor unit 200.
On the other hand, if examine pressure P 5 height than Wucan from the high pressure P h that operates 521 cold-producing mediums that transmit, then the control module 102 of indoor unit 100 remains on the aperture of indoor expansion valve 140 ID_SH1 or is adjusted to ID_SH1, and this process is fed back to operation 521 (operation 522 and operation 524).
Here, ID_SH1 and ID_SH2 refer to the target degree of superheat of the aperture that is used for expansion valve 140 in the control room, for example, satisfy inequality ID_SH1<ID_SH2.
Fig. 7 is the flow chart of method of regulating the degree of superheat of the cold-producing medium that compressor sucks during the refrigerating operation of air-conditioning by the degree of superheat of control indoor unit that illustrates according to another embodiment.
When the beginning refrigerating operation, the control module 102 of indoor unit 100 is adjusted to ID_SH3 with the aperture of indoor expansion valve 140.ID_SH3 (indoor overheating 3) expression is according to the aperture of the indoor expansion valve 140 of the degree of superheat of indoor unit 100.For example, ID_SH3 represents the aperture (operation 530) according to 4 ℃ overheated indoor expansion valve 140 of indoor unit 100.
Afterwards, the communication unit 105 of indoor unit 100 receives communication unit 205 transmission relevant with the degree of superheat of cold-producing mediums compressor 260 suctions the data (operation 531) from outdoor unit 200.
Therefore, the control module 102 of indoor unit 100 relatively (operates 532) with the degree of superheat and first reference value of the cold-producing medium that compressor 260 sucks, if the degree of superheat of the cold-producing medium that sucks is lower than first reference value, then the aperture with indoor expansion valve 140 remains on ID_SH3 or is adjusted to ID_SH3 (operation 534).When the degree of superheat of the cold-producing medium that sucks when compressor 260 is low, the aperture of indoor expansion valve 140 is remained on little value or is adjusted to little value, thereby reduced the amount of the cold-producing medium that is transferred to outdoor unit 200.As mentioned above, when the amount of the cold-producing medium that is transferred to outdoor unit 200 reduces, cold-producing medium carries out the heat exchange of big degree in indoor heat converter 120, when cold-producing medium carries out the heat exchange of big degree in indoor heat converter 120, the temperature of cold-producing medium that is transferred to the entrance side of compressor 260 raises, thereby the degree of superheat of the cold-producing medium that compressor 260 sucks is increased.
On the other hand, if the degree of superheat of the cold-producing medium that compressor 260 sucks than the first reference value height, the then degree of superheat and the comparison of second reference value (operating 533) of the control module 102 of indoor unit 100 cold-producing medium that compressor 260 is sucked.If the degree of superheat of the cold-producing medium that compressor 260 sucks is lower than second reference value, then the control module 102 of indoor unit 100 remains on the aperture of indoor expansion valve 140 ID_SH4 or is adjusted to ID_SH4 (operation 535).ID_SH4 represents the little state of aperture according to opening ratio indoor expansion valve 140 under ID_SH3 of the indoor expansion valve 140 of the control of the degree of superheat.
In addition, if the degree of superheat of the cold-producing medium that compressor 260 sucks than the second reference value height, then the control module 102 of indoor unit 100 remains on the aperture of indoor expansion valve 140 ID_SH5 or is adjusted to ID_SH5 (operating 536).ID_SH5 represents the little state of aperture according to opening ratio indoor expansion valve 140 under ID_SH4 of the indoor expansion valve 140 of the control of the degree of superheat.
The embodiment of Fig. 7 can implement with the embodiment of Fig. 4 to Fig. 6, and the embodiment of Fig. 7 shows by the degree of superheat of regulating indoor unit 100 and controls the degree of superheat that is inhaled into the cold-producing medium in the compressor 260.
Though above embodiment shows the control of the aperture of the control of aperture of indoor expansion valve 140 and outdoor expansion valve 280 individually, the control module 202 that can be by outdoor unit 200 and the control module 102 of indoor unit 100 are carried out the control of the aperture of the control of aperture of indoor expansion valve 140 and outdoor expansion valve 280 simultaneously.
As clear from the above description, in air-conditioning and control method thereof according to an embodiment, the pressure of the cold-producing medium of outdoor unit remains on normal level during heating operation or refrigerating operation, thereby obtains the reliability of air-conditioning operation.
Though illustrated and described some embodiment, it should be recognized by those skilled in the art that under the situation of principle that does not break away from the embodiment that limits its scope by claim and equivalent thereof and spirit, can change these embodiments.

Claims (16)

1. the control method of an air-conditioning, described air-conditioning has outdoor unit and indoor unit, and described outdoor unit comprises compressor and outdoor expansion valve, and described indoor unit comprises indoor expansion valve, and described method comprises:
During refrigerating operation, measure from the pressure of the cold-producing medium of compressor discharge;
If the pressure of the pressure ratio appointment of cold-producing medium is low, then make the pressure of cold-producing medium be elevated to pressure height than described appointment by at least one the aperture in control outdoor expansion valve and the indoor expansion valve.
2. control method according to claim 1, wherein, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, the aperture of coming expansion valve in the control room then by the target degree of superheat of regulating indoor unit.
3. control method according to claim 2 wherein, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, then reduces the aperture of indoor expansion valve by the target degree of superheat that increases indoor unit.
4. control method according to claim 1, wherein, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, then make the pressure of cold-producing medium be elevated to pressure height than described appointment by reducing at least one aperture in outdoor expansion valve and the indoor expansion valve.
5. control method according to claim 1, wherein,
Outdoor unit also comprises receiver;
If the pressure of the described appointment of pressure ratio of cold-producing medium is low, then by being transferred to the raise pressure of the cold-producing medium that is transferred to indoor unit of described receiver from the gases at high pressure of compressor discharge.
6. control method according to claim 1, wherein,
Detection is transferred to the degree of superheat of cold-producing medium of the entrance side of compressor;
If the described degree of superheat is lower than the reference of appointment, then by the raise degree of superheat of cold-producing medium of the entrance side that is transferred to compressor of the aperture that reduces indoor expansion valve.
7. the control method of an air-conditioning, described air-conditioning has outdoor unit and indoor unit, and described outdoor unit comprises compressor and outdoor expansion valve, and described indoor unit comprises indoor expansion valve, and described method comprises:
Be inhaled into the pressure of the cold-producing medium in the compressor heating the operating period measurement;
If the pressure height of the pressure ratio appointment of cold-producing medium, it is lower than the pressure of described appointment then by the aperture of controlling outdoor expansion valve the pressure of cold-producing medium to be reduced to.
8. control method according to claim 7, wherein, if the pressure height of the described appointment of pressure ratio of cold-producing medium then reduces along the amount that cold-producing medium is drawn into the cold-producing medium that the direction in the compressor flows by the aperture that reduces outdoor expansion valve.
9. control method according to claim 7 wherein, is controlled the aperture of outdoor expansion valve by the degree of superheat of regulating indoor unit.
10. air-conditioning comprises:
Pressure sensor is installed in the refrigerant outlet side of compressor, to measure the pressure of cold-producing medium;
The control module of outdoor unit, if the pressure of the pressure ratio appointment of cold-producing medium is low during refrigerating operation, then the control module of outdoor unit makes the pressure of cold-producing medium be elevated to pressure height than described appointment by the aperture of control outdoor expansion valve.
11. air-conditioning according to claim 10, wherein, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, then the control module of outdoor unit makes the pressure of cold-producing medium be elevated to pressure height than described appointment by the aperture that reduces outdoor expansion valve.
12. air-conditioning according to claim 10, the control module that also comprises indoor unit, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, then the aperture of the control module of indoor unit by expansion valve in the control room makes the pressure of cold-producing medium be elevated to pressure height than described appointment.
13. air-conditioning according to claim 12, wherein, if the pressure of the described appointment of pressure ratio of cold-producing medium is low, then the control module of indoor unit makes the pressure of cold-producing medium be elevated to pressure height than described appointment by the aperture that reduces indoor expansion valve.
14. air-conditioning according to claim 13, wherein, the control module of indoor unit reduces the aperture of indoor expansion valve by the target degree of superheat of regulating indoor unit.
15. air-conditioning according to claim 14, wherein, the control module of indoor unit reduces the aperture of indoor expansion valve by the target degree of superheat that increases indoor unit.
16. air-conditioning according to claim 10 also comprises:
Pressure sensor is installed in the refrigerant inlet side of compressor, to measure the pressure of cold-producing medium;
The control module of indoor unit, receive the data relevant heating the pressure sensor of operating period with the pressure of cold-producing medium from the refrigerant inlet side that is installed in compressor, if the pressure height of the described appointment of pressure ratio of cold-producing medium, then that the pressure of cold-producing medium is adjusted to is lower than the pressure of described appointment for the control module of the indoor unit target degree of superheat that is inhaled into the cold-producing medium in the compressor by control.
CN201110036154.2A 2010-02-08 2011-02-09 Air-conditioning and control method thereof Active CN102147141B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020100011651A KR20110092147A (en) 2010-02-08 2010-02-08 Air conditioner and control method thereof
KR10-2010-0011651 2010-02-08

Publications (2)

Publication Number Publication Date
CN102147141A true CN102147141A (en) 2011-08-10
CN102147141B CN102147141B (en) 2015-10-21

Family

ID=44352608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110036154.2A Active CN102147141B (en) 2010-02-08 2011-02-09 Air-conditioning and control method thereof

Country Status (3)

Country Link
US (1) US20110192177A1 (en)
KR (1) KR20110092147A (en)
CN (1) CN102147141B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104676953A (en) * 2013-11-28 2015-06-03 艾默生环境优化技术(苏州)有限公司 Refrigerating and/or heating system and control method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140260380A1 (en) * 2013-03-15 2014-09-18 Energy Recovery Systems Inc. Compressor control for heat transfer system
CN103216994B (en) * 2013-04-16 2015-05-20 青岛澳柯玛超低温冷冻设备有限公司 Operation method of one-driving-multiple intelligent instant freezer
WO2015006955A1 (en) * 2013-07-18 2015-01-22 杭州三花研究院有限公司 Method for controlling vehicle air-conditioning system, and vehicle air-conditioning system
DE112014002751T5 (en) * 2013-09-04 2016-03-03 Hanon Systems Air conditioning system for a vehicle and method for its control
KR20170082765A (en) * 2016-01-07 2017-07-17 엘지전자 주식회사 Controller for air conditions apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709090A (en) * 1994-11-25 1998-01-20 Hitachi, Ltd. Refrigerating system and operating method thereof
CN1793744A (en) * 2004-12-21 2006-06-28 Lg电子株式会社 Air conditioner
EP2103888A1 (en) * 2006-12-28 2009-09-23 Daikin Industries, Ltd. Refrigerating apparatus
WO2009119023A1 (en) * 2008-03-24 2009-10-01 ダイキン工業株式会社 Freezing apparatus
US20090260380A1 (en) * 2006-03-27 2009-10-22 Masakazu Okamoto Refrigeration System

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046325A (en) * 1934-07-17 1936-07-07 Narragansett Brewing Company Liquid dispensing apparatus
JPH07294031A (en) * 1994-04-28 1995-11-10 Kubota Corp Heat pump circuit
US5603227A (en) * 1995-11-13 1997-02-18 Carrier Corporation Back pressure control for improved system operative efficiency
JPH1019398A (en) * 1996-07-04 1998-01-23 Matsushita Refrig Co Ltd Multi-chanber type air conditioner
JP4277373B2 (en) * 1998-08-24 2009-06-10 株式会社日本自動車部品総合研究所 Heat pump cycle
JP4811204B2 (en) * 2006-09-11 2011-11-09 ダイキン工業株式会社 Refrigeration equipment
JP5055965B2 (en) * 2006-11-13 2012-10-24 ダイキン工業株式会社 Air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709090A (en) * 1994-11-25 1998-01-20 Hitachi, Ltd. Refrigerating system and operating method thereof
CN1793744A (en) * 2004-12-21 2006-06-28 Lg电子株式会社 Air conditioner
US20090260380A1 (en) * 2006-03-27 2009-10-22 Masakazu Okamoto Refrigeration System
EP2103888A1 (en) * 2006-12-28 2009-09-23 Daikin Industries, Ltd. Refrigerating apparatus
WO2009119023A1 (en) * 2008-03-24 2009-10-01 ダイキン工業株式会社 Freezing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104676953A (en) * 2013-11-28 2015-06-03 艾默生环境优化技术(苏州)有限公司 Refrigerating and/or heating system and control method thereof

Also Published As

Publication number Publication date
US20110192177A1 (en) 2011-08-11
KR20110092147A (en) 2011-08-17
CN102147141B (en) 2015-10-21

Similar Documents

Publication Publication Date Title
US9488396B2 (en) Air-conditioning apparatus
CN102147141A (en) Air conditioner and control method thereof
CN103216908B (en) Control method for outdoor fan in refrigeration of variable frequency multi-split air-conditioning unit
CN102725598B (en) Heat pump system
CN104048366A (en) Air conditioner, outdoor unit of air conditioner, heating air supplementing method and refrigeration air supplementing method
CN101813396B (en) Air conditioning unit and method for detecting oil level of compressor thereof
US20170167762A1 (en) Refrigeration cycle apparatus
CN105737424A (en) Cooling-heating air conditioner and control method thereof
EP2426437A2 (en) Ultra low temperature heat pump system with secondary refrigerant injection mechanism
CN102927728B (en) Heat pump system
CN102460030A (en) Freezer device
EP3312528B1 (en) Air conditioner
CN105987535A (en) High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant
CN102725596B (en) Heat pump system
KR100845607B1 (en) Heat pump using geothermy improved heatingcapacity
CN203215876U (en) Air conditioner and outdoor unit thereof
CN102338521A (en) Supercooling liquid impact preventing device of air cooling heat pump air conditioner
CN105783307A (en) Cold-warm type air conditioner and control method thereof
KR101437790B1 (en) An air conditioner and a control method for the same
CN103900178B (en) A kind of earth source heat pump central air-conditioning system of energy storage
CN105783311A (en) Single-cooling-type air conditioner and control method thereof
EP2597399A2 (en) Air Conditioner and Operation Method
CN105928239A (en) Cooling and heating type air conditioner and control method thereof
CN105783302A (en) Cooling type air conditioner and control method thereof
CN105928233A (en) Single-cold air conditioner and control method thereof

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model