CN106152406A - A kind of air-conditioning system and the control method of cold and hot pattern switching thereof - Google Patents
A kind of air-conditioning system and the control method of cold and hot pattern switching thereof Download PDFInfo
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- CN106152406A CN106152406A CN201610525403.7A CN201610525403A CN106152406A CN 106152406 A CN106152406 A CN 106152406A CN 201610525403 A CN201610525403 A CN 201610525403A CN 106152406 A CN106152406 A CN 106152406A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
- F24F11/84—Control 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention provides a kind of air-conditioning system and the control method of cold and hot pattern switching thereof, it includes compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), it and the position that each pipeline being respectively connected with at the exhaust outlet of described indoor heat exchanger (3) and described compressor (1), air entry, described outdoor heat exchanger (2) is comprised jointly is provided with the cold and hot converter (4) that can control this each pipeline respectively, and is internally provided with the expansion valve component carrying out conversion between cold and hot pattern to described system described cold and hot converter (4).By controlling the aperture change of expansion valve component using expansion valve component as the control valve of cold and hot converter branch road, the effect of patten transformation can be completed, thus is effectively reduced noise when pattern switches, improve the comfortableness that user uses by the present invention.
Description
Technical field
The invention belongs to air-conditioning technical field, be specifically related to a kind of air-conditioning system and the controlling party of cold and hot pattern switching thereof
Method.
Background technology
Heat recovery mode converter current in prior art all uses magnetic valve as the major control of mode converter
Means, this mode controls simply, but there is bigger problem is that control device is single, and during pattern switching, high pressure and low pressure are led
The noise problem of logical moment is not easily solved, and user's comfort is poor.
Due to air-conditioning system of the prior art exist when pattern switches control device single, when pattern switches produce
The technical problems such as noise causes user's comfort poor, therefore research and design of the present invention goes out a kind of air-conditioning system and cold and hot
The control method of pattern switching.
Content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome air-conditioning system of the prior art to switch in operational mode
When there is noise and cause the poor defect of user's comfort, thus provide a kind of air-conditioning system and the switching of cold and hot pattern thereof
Control method.
The present invention provides a kind of air-conditioning system, and it includes compressor, outdoor heat exchanger, indoor heat exchanger, and in described room
The intersection area of each pipeline that the exhaust outlet of interior heat exchanger and described compressor, air entry, described outdoor heat exchanger are respectively connected with
It is provided with the cold and hot converter that can control this each pipeline respectively, and be provided with to described system in described cold and hot converter inside
Carry out the expansion valve component of conversion between cold and hot pattern.
Preferably, it is connected by the first pipeline between described indoor heat exchanger with the exhaust outlet of described compressor；Described room
It is connected by the second pipeline between interior heat exchanger with the air entry of described compressor；Described indoor heat exchanger and described outdoor heat exchange
It is connected by the 3rd pipeline between device.
Preferably, described first pipeline is commonly connected to the one of described indoor heat exchanger after converging with described second pipeline phase
Interface end；Described 3rd pipeline is connected to another interface end of described indoor heat exchanger.
Preferably, described expansion valve component includes being arranged in described first line segments of described cold and hot converter inside
Heat electric expansion valve, and the cooling electronic being arranged in described second line segments of described cold and hot converter inside expands
Valve.
Preferably, described electric expansion valve is heated and described cooling electronic expansion valve all uses bore scope 5.0mm-
Electric expansion valve between 12.0mm.
Preferably, it is additionally provided with the pressure sensor for detecting the pressure of refrigerant in described system.
Preferably, described air-conditioning system is multi-online air-conditioning system, and described indoor heat exchanger is two or more, and and each
Described indoor heat exchanger is connected with a cold and hot converter matchingly.
The present invention also provides the control method that the cold and hot pattern of a kind of air-conditioning system switches, and it uses aforesaid air-conditioning system
System, switches over control between the heating mode of indoor heat exchanger and refrigeration mode.
Preferably, when described expansion valve component includes cooling electronic expansion valve and heats electric expansion valve, described system also
Including during pressure sensor, the control method that indoor heat exchanger transfers heating mode to from refrigeration mode comprises the following steps:
1) first the aperture of cooling electronic expansion valve is adjusted to 0pls；
2) then open and heat electric expansion valve, and by the pressure condition of pressure sensor detecting system, according to difference
The regulation of system pressure difference heat the aperture size of electric expansion valve, described system pressure difference=indoor set pressure-outdoor
Machine pressure；
3) last, electronic expansion valve opening will be heated and reach maximum opening.
Preferably, the described aperture size heating electric expansion valve reduces with the increase of pressure difference value, reduces with it
And increase.
Preferably, when described expansion valve component includes cooling electronic expansion valve and heats electric expansion valve, described system also
Including during pressure sensor, the control method that indoor heat exchanger transfers refrigeration mode to from heating mode comprises the following steps:
1) aperture first being heated electric expansion valve is adjusted to 0pls；
2) cooling electronic expansion valve is then opened, and by the pressure condition of pressure sensor detecting system, according to difference
System pressure difference regulation cooling electronic expansion valve aperture size；
3) last, cooling electronic expansion valve opening is reached maximum opening.
Preferably, the aperture size of described cooling electronic expansion valve reduces with the increase of pressure difference value, reduces with it
And increase.
A kind of air-conditioning system and the control method of cold and hot pattern switching thereof that the present invention provides have the advantages that
1. the control method being switched by air-conditioning system and the cold and hot pattern thereof of the present invention, is used in indoor heat exchanger and institute
State the exhaust outlet of compressor, the intersection area of each pipeline that air entry, described outdoor heat exchanger are respectively connected with arranges cold and hot conversion
Device and arrange expansion valve component therein, can be using expansion valve component as the control valve of cold and hot converter branch road, by control
The aperture change of expansion valve component processed, completes the effect of patten transformation, thus is effectively reduced noise when pattern switches, improve
The comfortableness that user uses；
2. the control method by the air-conditioning system of the present invention and the switching of cold and hot pattern thereof, additionally it is possible to big according to force value
Little difference and expansion valve opening is optionally regulated so that the function of control device and conformability are higher, have
Effect solves the single technical problem of control device.
Brief description
Fig. 1 is the structural representation of the air-conditioning system of the present invention；
Fig. 2 is the control flow schematic diagram that the air-conditioning system of the present invention transfers heating mode to from refrigeration mode；
Fig. 3 is the control flow schematic diagram that the air-conditioning system of the present invention transfers refrigeration mode to from heating mode.
In figure, reference is expressed as:
1 compressor, 2 outdoor heat exchangers, 3 indoor heat exchangers, 31 first indoor heat exchangers, 32 second is indoor
Heat exchanger, 4 cold and hot converters, 41 first cold and hot converters, 42 second cold and hot converters, 5 first pipelines, 6
Two pipelines, 7 the 3rd pipelines, 8 heat electric expansion valve, 9 cooling electronic expansion valves, 10 pressure sensors, 11 gas
Liquid/gas separator, 12 equilibrated valves, 13 low pressure gas pipes, hydraulic fluid pipe in 14,15 high-pressure air pipes, 16 electronic expansions
Valve, 17 cross valves, 18 oil eliminators.
Detailed description of the invention
As it is shown in figure 1, the present invention provides a kind of air-conditioning system, it includes compressor the 1st, outdoor heat exchanger the 2nd, indoor heat exchanger
3, and each with what the exhaust outlet of described compressor 1, air entry, described outdoor heat exchanger 2 were respectively connected with at described indoor heat exchanger 3
The position that pipeline is comprised jointly is provided with the cold and hot converter 4 that can control this each pipeline respectively, and in described cold and hot conversion
Device 4 is internally provided with the expansion valve component carrying out conversion between cold and hot pattern to described system.
By the air-conditioning system of the present invention, use at indoor heat exchanger and the exhaust outlet of described compressor, air entry, described
The intersection area of each pipeline that outdoor heat exchanger is respectively connected with arranges cold and hot converter and arranges expansion valve component, energy therein
Enough using expansion valve component as the control valve of cold and hot converter branch road, by controlling the aperture change of expansion valve component, complete mould
The effect of formula conversion, illustrates that when noise is big airflow fluctuation is big, then regulate aperture and diminishes to reduce the flowing of air-flow, thus effectively
Ground reduces noise during pattern switching, improves the comfortableness that user uses.
Preferably, it is connected by the first pipeline 5 between described indoor heat exchanger 3 with the exhaust outlet of described compressor 1；Described
It is connected by the second pipeline 6 between indoor heat exchanger 3 with the air entry of described compressor 1；Described indoor heat exchanger 3 and described room
It is connected by the 3rd pipeline 7 between external heat exchanger 2.This is the exhaust outlet with compressor for the indoor heat exchanger of the present invention, air entry
And the type of attachment being attached respectively between outdoor heat exchanger.
Preferably, described first pipeline 5 is commonly connected to described indoor heat exchanger 3 after converging with described second pipeline 6 phase
An interface end；Described 3rd pipeline 7 is connected to another interface end of described indoor heat exchanger 3.This is first to the 3rd pipeline
Be respectively connecting to the concrete type of attachment of two interface end of indoor heat exchanger, by so make compressor exhaust outlet and
Air entry is finally commonly connected to an interface end of compressor, and outdoor heat exchanger is connected to another interface end of indoor heat exchanger,
When indoor heat exchanger is heated, the refrigerant flow direction is: exhaust outlet of compressor the first pipeline 5 indoor heat exchanger 3 the 3rd is managed
Road 7 outdoor heat exchanger 2 compressor air suction mouth；During indoor heat exchanger refrigeration, the refrigerant flow direction is: exhaust outlet of compressor the 3rd
Pipeline 7 indoor heat exchanger 3 second pipeline 6 outdoor heat exchanger 2 compressor air suction mouth.
Preferably, described expansion valve component includes being arranged on described first pipeline 5 sections within described cold and hot converter 4
Heat electric expansion valve 8, and be arranged on the cooling electronic on described second pipeline 6 sections within described cold and hot converter 4
Expansion valve 9.This is the specific constructive form of expansion valve component and specifically arranges position, can be by heating electric expansion valve to
Refrigerant break-make on one pipeline (heating pipeline) and flow thereof are controlled, can be by cooling electronic expansion valve to the second pipeline
Refrigerant break-make on (refrigeration pipe) and flow thereof are controlled, it is achieved the switching of the low noise between cold and hot pattern.
Preferably, described electric expansion valve 8 is heated and cooling electronic expansion valve 9 is heavy caliber (i.e. bore scope
5.0mm-12.0mm) electric expansion valve.This be the present invention heat electric expansion valve and cooling electronic expansion valve concrete preferably
Version.The present invention further preferably uses bigbore electric expansion valve as the control valve of mode converter branch road,
By controlling the aperture change of electric expansion valve, complete patten transformation and properly functioning effect.Owing to electric expansion valve has
Multiple pulse step numbers are regulated, and can effectively control by electric expansion valve cold medium flux for different pulse step numbers.Work as room
Interior machine need into row mode switch when, the high pressure conditions refrigerant in pressure duct, electronic expansion valve controls can be passed through, with one
The state of low discharge passes through a part of refrigerant, reaches to carry out high pressure refrigerant the effect of pressure release, treats that pressure reaches an equilibrium
After state, now fully opening electric expansion valve, it is ensured that the proper flow of refrigerant, system is properly functioning, and unit completes pattern
The action of switching.Can further be reduced the noise of pattern switching by above interior machine pattern switching, promote user's
Comfort.
Preferably, it is additionally provided with the pressure sensor 10 for detecting the pressure of refrigerant in described system.So
The real-time pressure of refrigerant in system can be detected by pressure sensor, can be according to varying in size of force value to expansion
Valve opening is optionally regulated, so that the function of control device and conformability are higher, effectively solves control device
Single technical problem.
It is further preferred that described pressure sensor is arranged on high-pressure air pipe 15 and low pressure gas pipe 13, or, it is arranged on
On first pipeline 5 and the second pipeline 6.
Preferably, described air-conditioning system is multi-online air-conditioning system, and described indoor heat exchanger 3 is two or more, and with often
Individual described indoor heat exchanger 3 is connected with a cold and hot converter matchingly.This is the preferred of the air-conditioning system of the present invention
Version, by selecting to be set to multiple on-line system air-conditioning system, can be effectively to plural indoor heat exchanger
Refrigeration and heating mode between the switching that runs carry out the control of low noise, and control device variation.
It is further preferred that described indoor heat exchanger 3 is two, the respectively first indoor heat exchanger 31 and the second indoor are changed
Hot device 32, and it is conjointly provided with the first cold and hot converter 41 of indoor set and described second Room with described first indoor heat exchanger 8
Interior heat exchanger 32 is conjointly provided with the second cold and hot converter 42 of indoor set.
It is highly preferred that described first pipeline 5 is branched off into two pipelines and is respectively connecting to cold and hot turn of described first indoor set
Parallel operation 41 and the described second cold and hot converter 42 of indoor set；Described second pipeline 6 is branched off into two pipelines and is respectively connecting to institute
State the first cold and hot converter 41 of indoor set and the described second cold and hot converter 42 of indoor set；Described 3rd pipeline 7 is branched off into two articles
Pipeline is simultaneously respectively connecting to the described first cold and hot converter 41 of indoor set and the described second cold and hot converter 42 of indoor set.
The present invention also provides the control method that the cold and hot pattern of a kind of air-conditioning system switches, and it uses aforesaid air-conditioning system
System, switches over control between the heating mode of indoor heat exchanger and refrigeration mode.Cold by the air-conditioning system of the present invention
The control method of heat pattern switching, uses at the exhaust outlet of indoor heat exchanger and described compressor, air entry, described outdoor heat exchange
The intersection area of each pipeline that device is respectively connected with arranges cold and hot converter and arranges expansion valve component therein, can will expand
Valve module, as the control valve of cold and hot converter branch road, by controlling the aperture change of expansion valve component, completes patten transformation
Effect, illustrates that when noise is big airflow fluctuation is big, then regulate aperture and diminishes to reduce the flowing of air-flow, thus be effectively reduced mould
Noise during formula switching, improves the comfortableness that user uses.
Preferably, when described expansion valve component includes cooling electronic expansion valve and heats electric expansion valve, described system also
Including during pressure sensor, the control method that indoor heat exchanger transfers heating mode to from refrigeration mode comprises the following steps:
1) first the aperture of cooling electronic expansion valve is adjusted to 0pls；The refrigerant flowing to refrigeration closes isolation, it is to avoid
The situation that pressure is ganged up occurs；
2) then open and heat electric expansion valve, and by the pressure condition of pressure sensor detecting system, according to difference
The regulation of system pressure difference heat the aperture size of electric expansion valve, described system pressure difference=indoor set pressure-outdoor
Machine pressure；
3) last, electronic expansion valve opening will be heated and reach maximum opening.Final mode converter heats electric expansion valve
Aperture reaches the demand that maximum opening reaches system refrigerant proper flow.
This is the concrete rate-determining steps of the control method that indoor heat exchanger is converted to heating mode from refrigeration mode, such energy
Enough according to system pressure difference, adaptive regulation is carried out to the aperture size heating electric expansion valve so that control device is more smart
Standard, control effect is more accurate so that switching control process noise is reduced to minimum.
Preferably, the described aperture size heating electric expansion valve reduces with the increase of pressure difference value, reduces with it
And increase.The i.e. aperture size of pressure differential bigger regulation electric expansion valve is less；Pressure differential gets over opening of minor adjustment electric expansion valve
Degree size is bigger.Air-flow differential is bigger, illustrates that air-flow is more unstable, and bypass amount is bigger, then its flow bigger will bring big
Vibration and noise, so needing to reduce expansion valve opening, reducing flow, thus reduce noise.Air-flow differential is less, and gas is described
Flowing more stable, bypass amount is less, then its flow is more big, will not bring big vibration and noise, it is possible to increases expansion valve and opens
Degree, increasing flow, thus improves air flow rate while reducing noise.
Heat-reclamation multi-compressors system heats electricity according to the pressure condition of pressure sensor detecting system, control model converter
Sub-expansion valve opening, in the case that system pressure difference is different, it is different that mode converter heats electronic expansion valve opening, with pressure
The bigger electronic expansion valve opening aperture of difference is less, it is to avoid bypass amount is excessive causes noise bigger.
Preferably, when described expansion valve component includes cooling electronic expansion valve and heats electric expansion valve, described system also
Including during pressure sensor, the control method that indoor heat exchanger transfers refrigeration mode to from heating mode comprises the following steps:
1) aperture first being heated electric expansion valve is adjusted to 0pls (i.e. close and heat electric expansion valve)；To heat
The refrigerant flowing to closes isolation, it is to avoid the situation that pressure is ganged up occurs；
2) cooling electronic expansion valve is then opened, and by the pressure condition of pressure sensor detecting system, according to difference
System pressure difference regulation cooling electronic expansion valve aperture size；
3) last, cooling electronic expansion valve opening is reached maximum opening.Final mode converter cooling electronic expansion valve
Aperture reaches the demand that maximum opening reaches system refrigerant proper flow.
This is the concrete rate-determining steps of the control method that indoor heat exchanger is converted to heating mode from refrigeration mode, such energy
Enough according to system pressure difference, adaptive regulation is carried out to the aperture size heating electric expansion valve so that control device is more smart
Standard, control effect is more accurate so that switching control process noise is reduced to minimum.
Preferably, the aperture size of described cooling electronic expansion valve reduces with the increase of pressure difference value, reduces with it
And increase.The i.e. aperture size of pressure differential bigger regulation electric expansion valve is less；Pressure differential gets over opening of minor adjustment electric expansion valve
Degree size is bigger.Air-flow differential is bigger, illustrates that air-flow is more unstable, then its flow is bigger will bring big vibration and noise,
So needing to reduce expansion valve opening, reducing flow, thus reduce noise.Air-flow differential is less, illustrates that air-flow is more stable, then
Its flow is more big, will not bring big vibration and noise, it is possible to increase expansion valve opening, increasing flow, thus is subtracting
Improve air flow rate while little noise.
Operation principle and the preferred embodiment of the present invention are described below
This invention of the present invention is a kind of peculiar solution noise scheme for multi-online air-conditioning system, as complete set
Commutation noise solution, the program is divided into several part, the content of detection part, control part and executable portion.When heat is empty
Adjusting system is when properly functioning, if the first indoor heat exchanger 31 needs, when refrigeration transfers heating mode to, to first correspond to first
The mode converter cooling electronic expansion valve 9 of the second pipeline 6 of cold and hot converter 41 (or claiming mode converter), can adjust at once
To 0pls, the refrigerant flowing to refrigeration closes isolation, it is to avoid the situation that pressure is ganged up occurs.Then heat-reclamation multi-compressors system root
According to the pressure condition of pressure sensor detecting system, control first mode converter 41 heats electric expansion valve 8 aperture, system pressure
In the case that power difference is different, it is different that mode converter heats electric expansion valve 8 aperture, as pressure differential heats more greatly electronic expansion
Valve 8 aperture is less, it is to avoid bypass amount is excessive causes noise bigger.Last first mode converter 41 heats electric expansion valve 8 and opens
Degree reaches the demand that maximum opening reaches system refrigerant proper flow.
When air-conditioning system is when properly functioning, if the first indoor heat exchanger 31 need from heat transfer refrigeration mode to when,
The mode converter first corresponding on the first pipeline 5 of first mode converter 41 heats electric expansion valve 8, can be adjusted at once
The refrigerant heating the flow direction is closed isolation, it is to avoid the situation that pressure is ganged up occurs by 0pls.Then multiple on-line system passes according to pressure
The pressure condition of sensor 10 detecting system, control model converter cooling electronic expansion valve 9 aperture, the different feelings of system pressure difference
Under condition, mode converter cooling electronic expansion valve 9 aperture is different, as pressure differential bigger electronic expansion valve opening aperture is less,
Avoid that bypass amount is excessive causes noise bigger.Last first mode converter 41 cooling electronic expansion valve 9 aperture reaches maximum and opens
Degree reaches the demand of system refrigerant proper flow.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.With
It is only the preferred embodiment of the present invention described on, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, can also make some improvement and modification, these improve and modification also should be regarded as this
The protection domain of invention.
Claims (12)
1. an air-conditioning system, it is characterised in that: include compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), and
Described indoor heat exchanger (3) is each with what the exhaust outlet of described compressor (1), air entry, described outdoor heat exchanger (2) were respectively connected with
The position that pipeline is comprised jointly is provided with the cold and hot converter (4) that can control this each pipeline respectively, and at described cold and hot turn
Parallel operation (4) is internally provided with the expansion valve component carrying out conversion between cold and hot pattern to described system.
2. air-conditioning system according to claim 1, it is characterised in that: described indoor heat exchanger (3) and described compressor (1)
Exhaust outlet between by the first pipeline (5) be connected；Between the air entry of described indoor heat exchanger (3) and described compressor (1)
It is connected by the second pipeline (6)；Pass through the 3rd pipeline (7) phase between described indoor heat exchanger (3) with described outdoor heat exchanger (2)
Even.
3. air-conditioning system according to claim 2, it is characterised in that: described first pipeline (5) and described second pipeline (6)
It is commonly connected to an interface end of described indoor heat exchanger (3) after converging mutually；Described 3rd pipeline (7) is connected to described indoor and changes
Another interface end of hot device (3).
4. the air-conditioning system according to one of claim 2-3, it is characterised in that: described expansion valve component includes being arranged on institute
State and heat electric expansion valve (8) in internal described first pipeline (5) section of cold and hot converter (4), and be arranged on described cold
Cooling electronic expansion valve (9) in internal described second pipeline (6) section of thermoconverter (4).
5. air-conditioning system according to claim 4, it is characterised in that: described heat electric expansion valve (8) and described refrigeration
Electric expansion valve (9) all uses the electric expansion valve between bore scope 5.0mm-12.0mm.
6. the air-conditioning system according to one of claim 1-5, it is characterised in that: it is additionally provided with for cold in described system
The pressure sensor (10) that the pressure of matchmaker detects.
7. the air-conditioning system according to one of claim 1-6, it is characterised in that: described air-conditioning system is multi-gang air-conditioner system
System, described indoor heat exchanger (3) is two or more, and is connected with one matchingly with indoor heat exchanger each described (3)
Individual cold and hot converter.
8. the control method of the cold and hot pattern switching of an air-conditioning system, it is characterised in that: use one of claim 1-7 described
Air-conditioning system, switch over control between the heating mode of indoor heat exchanger and refrigeration mode.
9. control method according to claim 8, it is characterised in that: when described expansion valve component includes that cooling electronic expands
Valve and heat electric expansion valve, described system is when also including pressure sensor, indoor heat exchanger transfers to from refrigeration mode and heats mould
The control method of formula comprises the following steps:
1) first the aperture of cooling electronic expansion valve is adjusted to 0pls；
2) then open and heat electric expansion valve, and by the pressure condition of pressure sensor detecting system, according to different be
System pressure difference value regulation heats the aperture size of electric expansion valve, described system pressure difference=indoor set pressure-off-premises station pressure
Power；
3) last, electronic expansion valve opening will be heated and reach maximum opening.
10. control method according to claim 9, it is characterised in that: the described aperture size heating electric expansion valve with
The increase of pressure difference value and reduce, reduce with it and increase.
11. control methods according to claim 8, it is characterised in that: when described expansion valve component includes that cooling electronic is swollen
Swollen valve and heat electric expansion valve, described system is when also including pressure sensor, indoor heat exchanger transfers refrigeration to from heating mode
The control method of pattern comprises the following steps:
1) aperture first being heated electric expansion valve is adjusted to 0pls；
2) then open cooling electronic expansion valve, and by the pressure condition of pressure sensor detecting system, according to different be
The aperture size of system pressure difference value regulation cooling electronic expansion valve；
3) last, cooling electronic expansion valve opening is reached maximum opening.
12. control methods according to claim 11, it is characterised in that: the aperture size of described cooling electronic expansion valve with
The increase of pressure difference value and reduce, reduce with it and increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525403.7A CN106152406B (en) | 2016-07-04 | 2016-07-04 | A kind of control method of air-conditioning system and its cold and hot pattern switching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525403.7A CN106152406B (en) | 2016-07-04 | 2016-07-04 | A kind of control method of air-conditioning system and its cold and hot pattern switching |
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| CN106152406A true CN106152406A (en) | 2016-11-23 |
| CN106152406B CN106152406B (en) | 2019-06-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2022062209A1 (en) * | 2020-09-22 | 2022-03-31 | 广东美的暖通设备有限公司 | Air conditioner, control method and computer-readable storage medium |
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