CN105570990B - Multi-gang air conditioner - Google Patents
Multi-gang air conditioner Download PDFInfo
- Publication number
- CN105570990B CN105570990B CN201610008861.3A CN201610008861A CN105570990B CN 105570990 B CN105570990 B CN 105570990B CN 201610008861 A CN201610008861 A CN 201610008861A CN 105570990 B CN105570990 B CN 105570990B
- Authority
- CN
- China
- Prior art keywords
- branch
- air conditioner
- heat exchanger
- gang air
- outlet
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- 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
- F24F11/62—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
- F24F11/70—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
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24F11/64—Electronic processing using pre-stored data
-
- 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
-
- 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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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
- F24F2110/40—Pressure, e.g. wind pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of multi-gang air conditioner, the arrival end for crossing the first branch of cold heat exchanger is connected via the outlet end of the first solenoid valve and outdoor heat exchanger；The outlet end of the first branch is connect with the arrival end of each indoor heat exchanger respectively, and outlet end is connected via throttle valve and the arrival end of the second branch；The outlet end of the second branch and the gas returning port of compressor connect；The gas outlet of compressor is connected via the arrival end of second solenoid valve and outdoor heat exchanger；Multi-gang air conditioner further includes the third branch being connected between the gas outlet of compressor and the arrival end of the first branch, and third branch road is equipped with third solenoid valve.The multi-gang air conditioner of the present invention is when running small number indoor unit, refrigerant can be made not flow into outdoor heat exchanger, and cold heat exchanger was flowed into via third branch, outdoor heat exchanger will not be caused to gather a large amount of liquid refrigerants, and then be effectively improved the refrigeration effect of indoor unit.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to multi-gang air conditioners.
Background technology
General large and medium-sized multi-gang air conditioner can all install big number outdoor unit, and small number indoor unit is run under low temperature environment
When, outdoor unit can make corresponding output according to the demand of indoor unit.Outdoor unit output is smaller in most cases, but due to room
External heat exchanger is larger, therefore refrigerant is easy to condense out in outdoor heat exchanger, becomes liquid.As multi-gang air conditioner is run
The increase of time, outdoor heat exchanger just will produce a large amount of liquid refrigerants, and the pressure at expulsion of compressor is relatively low at this time, to outdoor
The liquid refrigerants motive force of heat exchanger is insufficient, causes a large amount of liquid refrigerants to accumulate in outdoor heat exchanger, can not ensure there is foot
Enough refrigerants reach indoor unit and cannot be satisfied demand of the user to refrigeration to cause indoor unit refrigeration effect poor.
Invention content
The main purpose of the present invention is to provide a kind of multi-gang air conditioners, it is intended to it is small in operation to solve multi-gang air conditioner
When number indoor unit, since the technology that outdoor heat exchanger gathers a large amount of liquid refrigerants and causes indoor unit refrigeration effect poor is asked
Topic.
Multi-gang air conditioner provided by the invention includes controller, compressor, outdoor heat exchanger and indoor heat exchanger, described
Multi-gang air conditioner further included cold heat exchanger, the first solenoid valve and second solenoid valve；
Wherein, the cold heat exchanger of crossing includes the first branch and the second branch, and the arrival end of the first branch is via institute
The first solenoid valve is stated to connect with the outlet end of the outdoor heat exchanger；The outlet end of the first branch respectively with each room
The arrival end of interior heat exchanger connects, and the outlet end of the first branch connects via throttle valve and the arrival end of the second branch
It connects；The outlet end of the second branch is connect with the gas returning port of the compressor；
The gas outlet of the compressor is connect via the second solenoid valve with the arrival end of the outdoor heat exchanger；
The multi-gang air conditioner further includes the arrival end of the gas outlet and the first branch that are connected to the compressor
Between third branch, third branch road is equipped with third solenoid valve；
The controller is controlled the multi-gang air conditioner and is run with the first operating status or the second operating status, wherein
In the first operating status, the controller controls first solenoid valve and second solenoid valve conducting, and the third electromagnetism
Valve ends；In the second operating status, the controller controls first solenoid valve and second solenoid valve cut-off, and described the
Three solenoid valve conductions.
Preferably, when the multi-gang air conditioner is in the first operating status, the controller is described multi-joint in judgement
When the exchange capability of heat of air-conditioning system meets the first preset condition, then controls the multi-gang air conditioner and switch to the second operation shape
State.
Preferably, the multi-gang air conditioner further includes the first temperature for detecting the outdoor heat exchanger Outlet Temperature value
Spend sensor, the second temperature sensor for detecting outdoor environment temperature value, the third for detecting indoor environment temperature value
Temperature sensor, the 4th temperature sensor for detecting the indoor heat exchanger Outlet Temperature value, for detecting the compression
The second pressure sensor of the first pressure sensor of the pressure at expulsion of machine and back pressure for detecting the compressor；Institute
Difference of first preset condition between the outdoor heat exchanger Outlet Temperature value and outdoor environment temperature value is stated less than the first temperature
Threshold value is spent, and the difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is less than second temperature threshold value；
Or the difference for the pressure at expulsion and back pressure that first preset condition is the compressor is less than the first preset pressure value, and
Difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is less than second temperature threshold value.
Preferably, when the multi-gang air conditioner is in the second operating status, the controller is described multi-joint in judgement
When the exchange capability of heat of air-conditioning system meets the second preset condition, then controls the multi-gang air conditioner and switch to the first operation shape
State.
Preferably, second preset condition is more than the second preset pressure value, institute for the exhaust pressure value of the compressor
State the first branch outlet degree of supercooling be less than third temperature threshold, indoor environment temperature value and indoor heat exchanger Outlet Temperature value it
Between difference be more than the pressure at expulsion of the 4th temperature threshold or the compressor and the difference of back pressure more than third preset pressure
Value.
Preferably, when the multi-gang air conditioner is in the second operating status, the controller is additionally operable to periodically
The degree of supercooling of the first branch outlet is obtained, and opening for the throttle valve is adjusted according to the degree of supercooling that the first branch exports
Degree.
Preferably, the controller is additionally operable to：
When degree of supercooling in first branch outlet is less than five temperature thresholds, the controller controls the throttle valve
Aperture increase；
When degree of supercooling in first branch outlet is more than six temperature thresholds, the controller controls the throttle valve
Aperture reduce；
Degree of supercooling in first branch outlet is greater than or equal to the 5th temperature threshold, and less than or equal to described
When six temperature thresholds, the aperture that the controller controls the throttle valve remains unchanged；
Wherein, the 5th temperature threshold is less than the 6th temperature threshold.
Preferably, when currently running indoor heat exchanger is at least two, the indoor environment temperature value is changed with interior
Difference between hot device Outlet Temperature value be the indoor environment temperature value respectively with each indoor heat exchanger outlet temperature
The average value of difference between value.
Multi-gang air conditioner provided by the invention, by the way that cold heat exchanger, the first solenoid valve and second solenoid valve, mistake was arranged
Cold heat exchanger includes the first branch and the second branch, the arrival end of the first branch with via first solenoid valve with it is described
The outlet end of outdoor heat exchanger connects；The outlet end of the first branch connects with the arrival end of each indoor heat exchanger respectively
It connects, and the outlet end of the first branch is connect via throttle valve with the arrival end of the second branch；The second branch
Outlet end is connect with the gas returning port of the compressor；The gas outlet of the compressor is via the second solenoid valve and the outdoor
The arrival end of heat exchanger connects；The multi-gang air conditioner further includes being connected to the gas outlet of the compressor and described first
Third branch between the arrival end on road, the third branch road are equipped with third solenoid valve；In the first operating status, controller
First solenoid valve and second solenoid valve conducting are controlled, and the third solenoid valve ends；In the second operating status, control
Device controls first solenoid valve and second solenoid valve cut-off, and the third solenoid valve conduction, in multi-gang air conditioner
When running small number indoor unit, outdoor heat exchanger will not be caused to gather a large amount of liquid refrigerants, and then be effectively improved interior
The refrigeration effect of machine.
Description of the drawings
Fig. 1 is the structural schematic diagram of multi-online air-conditioning system of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of multi-gang air conditioner.
Referring to Fig.1, Fig. 1 is the structural schematic diagram of multi-online air-conditioning system of the present invention.
The multi-gang air conditioner includes that controller (not indicated in figure), compressor 10, outdoor heat exchanger 20 and interior are changed
Hot device 30, the multi-gang air conditioner further included cold heat exchanger 40, the first solenoid valve 50 and second solenoid valve 60；Wherein, institute
It includes the first branch 41 and the second branch 42 to state cold heat exchanger 40, and the arrival end of the first branch 41 is via first electricity
Magnet valve 50 is connect with the outlet end of the outdoor heat exchanger 20；The outlet end of the first branch 41 respectively with each interior
The arrival end of heat exchanger 30 connects, and the outlet end of the first branch 41 is via throttle valve 421 and the second branch 42
Arrival end connects；The outlet end of the second branch 42 is connect with the gas returning port of the compressor 10；In the second branch 42
Refrigerant absorb the heat of the refrigerant in the first branch 41；The gas outlet of the compressor 10 is via the second solenoid valve
60 connect with the arrival end of the outdoor heat exchanger 20；The multi-gang air conditioner further includes being connected to going out for the compressor 10
Third branch 70 between gas port and the arrival end of the first branch 41, the third branch 70 are equipped with third solenoid valve
71；The controller is controlled the multi-gang air conditioner and is run with the first operating status or the second operating status, wherein first
When operating status, the controller controls first solenoid valve 50 and second solenoid valve 60 is connected, and the third solenoid valve
71 cut-offs；In the second operating status, the controller controls first solenoid valve 50 and second solenoid valve 60 is ended, and institute
State the conducting of third solenoid valve 71.
Optionally, above-mentioned multi-gang air conditioner can also include four-way valve 80, the arrival end of the third branch 70 via
The four-way valve 80 is connected to the gas outlet of the compressor 10.
Optionally, above-mentioned second solenoid valve 60 can be triple valve.As shown in Figure 1, between the ends f and the ends e of triple valve
When being connected to and ending between the ends f and the ends g, then it is considered as the conducting of second solenoid valve 60；End between the ends f and the ends e of triple valve,
And when being connected between the ends f and the ends g, then it is considered as the conducting of second solenoid valve 60.
In the present embodiment, plate heat exchanger or double-tube heat exchanger etc. may be used in above-mentioned cold heat exchanger 40 of crossing.Multi-joint
When air-conditioning system is run, heat exchange is carried out between the refrigerant in refrigerant and the second branch 42 in the first branch 41 so that first
Refrigerant temperature in branch 41 reduces.
Above-mentioned first operating status is normal refrigerating state, does not have refrigerant circulation, outdoor to change in third branch 70 at this time
Hot device 20 works normally, and the operation logic of the first operating status is as follows：
Refrigerant forms the gaseous coolant of high temperature and pressure after the compression of compressor 10, and is discharged from exhaust outlet.Due at this time
Three solenoid valves 71 end, and second solenoid valve 60 and the conducting of the first solenoid valve 50, therefore the gaseous coolant of high temperature and pressure is through second
Outdoor heat exchanger 20 is flowed into after solenoid valve 60, is exchanged heat in outdoor heat exchanger 20, and cryogenic high pressure liquid refrigerants is formed.Then
Followed by the first solenoid valve 50 and the first branch 41, cryogenic high pressure liquid refrigerants divides two-way after the outflow of the first branch 41, and one
Road flows into each indoor heat exchanger 30 and exchanges heat, and forms high-temperature low-pressure gaseous coolant, and finally flow into the return-air of compressor 10
Mouthful；Another way flows into the second branch 42, since the second branch 42 is equipped with throttle valve 421, it is preferable that throttle valve 421 is set to the
The arrival end of two branches 42, flow into the second branch 42 cryogenic high pressure liquid refrigerants will be converted to after throttle valve 421 it is low
Warm low-pressure liquid refrigerant, therefore the low-temp low-pressure liquid refrigerants in the second branch 42 will absorb the refrigerant in the first branch 41
Heat.The refrigerant flowed out by the second branch 42 finally flows into the gas returning port of compressor 10.
Above-mentioned second operating status is multi-gang air conditioner leads to or will cause room when running small number indoor unit
The operating status taken is needed when external heat exchanger 20 gathers a large amount of liquid refrigerants, wherein if a certain multi-gang air conditioner is currently transported
When capable indoor unit is less, then it can be described as multi-gang air conditioner and run small number indoor unit.It is outdoor in the second operating status
Heat exchanger 20 does not work, and has refrigerant to pass through in third branch 70, and multi-gang air conditioner is exchanged heat by crossing cold heat exchanger 40.
The operation logic of second operating status is as follows：
Refrigerant forms the gaseous coolant of high temperature and pressure after the compression of compressor 10, and is discharged from exhaust outlet.Due at this time
Three solenoid valves 71 are connected, and second solenoid valve 60 and the cut-off of the first solenoid valve 50, therefore the gaseous coolant of high temperature and pressure is through third
Branch 70 flows into the first branch 41, and high pressure gaseous refrigerant flows through the first branch 41, under the action of the first branch 41, only
Small part high pressure gaseous refrigerant is converted to cryogenic high pressure liquid refrigerants, divides two-way after the outflow of the first branch 41, flows all the way
Enter each indoor heat exchanger 30 to exchange heat, forms high-temperature low-pressure gaseous coolant, and finally flow into the gas returning port of compressor 10；Separately
The second branch 42 is flowed into all the way, since the second branch 42 is equipped with throttle valve 421, it is preferable that throttle valve 421 is set to the second branch
42 arrival end, low-temp low-pressure will be converted to after throttle valve 421 by flowing into the cryogenic high pressure liquid refrigerants of the second branch 42
Liquid refrigerants, therefore the low-temp low-pressure liquid refrigerants in the second branch 42 will absorb the heat of the refrigerant in the first branch 41.
The refrigerant flowed out by the second branch 42 finally flows into the gas returning port of compressor 10.Under the action of the second branch 42, with second
The duration run under operating status not short increase, it will pass through more and more high temperature and pressure gas of the first branch 41
State refrigerant is converted to cryogenic high pressure liquid refrigerants so that more cryogenic high pressure liquid refrigerant stream enter indoor heat exchanger 30 into
Row heat exchange, and then meet the needs of indoor heat exchanger 30.
In the present invention, controller can control multi-gang air conditioner according to switching command input by user and run shape first
It is switched between state and the second operating status, the first operating status and second can also be automatically performed according to some control parameters
Switching between operating status.
Small number indoor unit is run in multi-gang air conditioner, and causes or outdoor heat exchanger 20 will be caused to gather a large amount of liquid
When state refrigerant, can the second operating status be switched to by the first operating status, so that refrigerant is without outdoor heat exchanger 20,
Shorten the flow path of refrigerant in systems, avoid due to system pressure is too low and so that a large amount of refrigerant remains in outdoor
In heat exchanger 20, and system pressure is improved, refrigerant driving force is stronger so that more refrigerants, which can flow in indoor unit, to be changed
Heat；And the condensation that cold heat exchanger 40 replaces outdoor heat exchanger 20 is crossed, due to crossing the internal volume of cold heat exchanger 40 relative to room
External heat exchanger 20 is much smaller, therefore crossing the liquid refrigerants gathered in cold heat exchanger 40 also can be less, therefore does not interfere with interior and change
The refrigeration effect of hot device 30.
Multi-gang air conditioner provided by the invention, by the way that cold heat exchanger 40, the first solenoid valve 50 and the second electromagnetism was arranged
Valve 60, cross cold heat exchanger 40 include the first branch 41 and the second branch 42, the arrival end of the first branch 41 with via described
First solenoid valve 50 is connect with the outlet end of the outdoor heat exchanger 20；The outlet end of the first branch 41 and each room
The arrival end of interior heat exchanger 30 connects, and the outlet end of the first branch 41 is connect with the arrival end of the second branch 42；
The outlet end of the second branch 42 is connect with the gas returning port of the compressor 10；The second branch 42 is equipped with throttle valve
421, the refrigerant in the second branch 42 absorbs the heat of the refrigerant in the first branch 41；The outlet of the compressor 10
Mouth is connect via the second solenoid valve 60 with the arrival end of the outdoor heat exchanger 20；The multi-gang air conditioner further includes connecting
The third branch 70 being connected between the gas outlet of the compressor 10 and the arrival end of the first branch 41, the third branch
70 are equipped with third solenoid valve 71；In the first operating status, first solenoid valve 50 and second solenoid valve 60 are connected, and institute
State the cut-off of third solenoid valve 71；In the second operating status, first solenoid valve 50 and second solenoid valve 60 are ended, and described
Third solenoid valve 71 is connected, to, when running small number indoor unit, cause outdoor heat exchanger 20 in multi-gang air conditioner
A large amount of liquid refrigerants are gathered, and then are effectively improved the refrigeration effect of indoor unit.
Further, the first embodiment based on multi-gang air conditioner of the present invention, the invention also provides combined air conditioners systems
The second embodiment of system, when the multi-gang air conditioner is in the first operating status, the controller is described multi-joint in judgement
When the exchange capability of heat of air-conditioning system meets the first preset condition, then controls the multi-gang air conditioner and switch to the second operation shape
State.
In the present embodiment, the first preset condition can be configured according to actual needs, as long as can accurately react
The exchange capability of heat of multi-gang air conditioner.For example, when the exchange capability of heat of multi-gang air conditioner is more than default ability, then control
Multi-gang air conditioner switches to the second operating status.
Optionally, the multi-gang air conditioner further includes for detecting 20 Outlet Temperature value To1 of the outdoor heat exchanger
First temperature sensor, the second temperature sensor for detecting outdoor environment temperature value T1, for detecting indoor environment temperature
The third temperature sensor of value T2, is used the 4th temperature sensor for detecting 30 Outlet Temperature value To2 of the indoor heat exchanger
In the first pressure sensor for the pressure at expulsion Pc1 for detecting the compressor 10 and return-air pressure for detecting the compressor 10
The second pressure sensor of power Pc2.Above-mentioned first temperature sensor, second temperature sensor, third temperature sensor, the 4th temperature
Degree sensor, first pressure sensor and second pressure sensor are electrically connected with the controller, and controller obtains above-mentioned outdoor and changes
20 Outlet Temperature value To1 of hot device, outdoor environment temperature value T1, indoor environment temperature value T2,30 Outlet Temperature value of indoor heat exchanger
To2, pressure at expulsion Pc1 and back pressure Pc2.
Optionally, the first preset condition is 20 Outlet Temperature value To1 of the outdoor heat exchanger and outdoor environment temperature value T1
Between difference be less than the first temperature threshold Ts1, and the indoor environment temperature value T2 and 30 Outlet Temperature value of indoor heat exchanger
Difference between To2 is less than second temperature threshold value Ts2；Or the pressure at expulsion that first preset condition is the compressor 10
The difference of Pc1 and back pressure Pc2 are less than the first preset pressure value Ps1, and the indoor environment temperature value T2 and indoor heat exchanger
Difference between 30 Outlet Temperature value To2 is less than second temperature threshold value Ts2.That is, in To1-T1<Ts1, and T2-To2<When Ts2,
Then controller controls the multi-gang air conditioner and switches to the second operating status by the first operating status.Alternatively, in Pc1-Pc2<
Ps1, and T2-To2<When Ts2, then controller controls the multi-gang air conditioner and switches to the second operation shape by the first operating status
State.
In other embodiments, the first preset condition may be the indoor environment temperature value T2 and indoor heat exchanger 30
Difference between Outlet Temperature value To2 is less than 20 Outlet Temperature value To1 of second temperature threshold value Ts2 or the outdoor heat exchanger
Difference between outdoor environment temperature value T1 is less than the first temperature threshold Ts1 or first preset condition is the pressure
The difference of the pressure at expulsion Pc1 and back pressure Pc2 of contracting machine 10 are less than the first preset pressure value Ps1.
Whether multi-gang air conditioner provided in this embodiment meets the above-mentioned first default item by controller automatic decision
Part, and the second operating status is automatically switched to when meeting, without the manual switching state of user, further improve user
Using the degree of convenience of the multi-gang air conditioner, automatic adjustment is realized.
Further, the first or second embodiments based on multi-gang air conditioner of the present invention, the invention also provides multi-joint
The 3rd embodiment of air-conditioning system, when the multi-gang air conditioner is in the second operating status, the controller is in judgement institute
When stating exchange capability of heat the second preset condition of satisfaction of multi-gang air conditioner, then controls the multi-gang air conditioner and switch to the first fortune
Row state.
In the present embodiment, the second preset condition can be configured according to actual needs, as long as can accurately react
The exchange capability of heat of multi-gang air conditioner.For example, when the exchange capability of heat of multi-gang air conditioner is less than default ability, then control
Multi-gang air conditioner switches to the first operating status.
Optionally, second preset condition is that the exhaust pressure value Pc of the compressor 10 is more than the second preset pressure value
The degree of supercooling TSC that P2, the first branch 41 export is changed less than third temperature threshold Ts3, indoor environment temperature value T2 and interior
Difference between 30 Outlet Temperature value To2 of hot device is more than the pressure at expulsion of the 4th temperature threshold Ts4 or described compressors 10 and returns
The difference of atmospheric pressure is more than third preset pressure value P3.Wherein, the second temperature threshold value is less than the 4th temperature threshold, described
First preset pressure value P1 is less than third preset pressure value P3.That is, in Pc>P2、TSC<Ts3、T2-To2>Ts4 or P1>When P3,
Then the controller controls the multi-gang air conditioner and switches to the first operating status.
The degree of supercooling TSC that the first branch 41 exports corresponds to saturation temperature and 41 outlet temperature of the first branch equal to pressure at expulsion
Between difference.Multi-gang air conditioner further includes the 5th temperature sensor set on 41 exit of the first branch, passes through the 5th temperature
It spends sensor and detects 41 outlet temperature of the first branch.
The present embodiment provides excessively more to connect air-conditioning system, by controller automatic decision above three condition, appoints meeting
The first operating status is then switched to by the second operating status automatically when one condition, without the manual switching state of user, into one
Step improves degree of facilitating of the user using the multi-gang air conditioner, realizes automatic adjustment.
Further, based on multi-gang air conditioner of the present invention first to third any embodiment, the invention also provides
The fourth embodiment of multi-gang air conditioner, when the multi-gang air conditioner is in the second operating status, the controller is also used
It is adjusted in the degree of supercooling for periodically obtaining the outlet of the first branch 41, and according to the degree of supercooling that the first branch 41 exports
The aperture of the throttle valve 421.
Optionally, the degree of supercooling adjusting section that following manner adjusts the outlet of the first branch 41 may be used in controller
Flow the aperture of valve 421：
When the degree of supercooling that the first branch 41 exports is less than five temperature thresholds, the controller controls the throttling
The aperture of valve 421 increases；
When the degree of supercooling that the first branch 41 exports is more than six temperature thresholds, the controller controls the throttling
The aperture of valve 421 reduces；
It is greater than or equal to the 5th temperature threshold in the degree of supercooling that the first branch 41 exports, and is less than or equal to institute
When stating six temperature thresholds, the aperture that the controller controls the throttle valve 421 remains unchanged；
Wherein, the 5th temperature threshold is less than the 6th temperature threshold.
In the present embodiment, it can then be controlled when the degree of supercooling that each first branch 41 exports is less than five temperature thresholds
Throttle valve 421 processed, which increases, presets opening value.The degree of supercooling that can also be exported in each first branch 41 is more than the 6th temperature
When threshold value, then controls throttle valve 421 and reduce default opening value.
The size of above-mentioned 5th temperature threshold and the 6th temperature threshold can be configured according to actual needs, for example, the
Six temperature thresholds can be with value for 7 to 9 DEG C, and the 5th temperature threshold can be with value for 2 to 4 DEG C.
Optionally, the third temperature threshold is less than the 5th temperature threshold.The size of third temperature threshold can root
It is configured according to actual needs, for example, can be with value for 0 to 2 DEG C.
Multi-gang air conditioner provided in this embodiment automatically adjusts section by the degree of supercooling exported according to the first branch 41
The aperture of valve 421 is flowed, so that the function for the realization outdoor heat exchanger 20 that cold heat exchanger 40 can be more efficient excessively, and more increase
The carry out heat exchange of effect, further improves the efficiency of multi-gang air conditioner.
Optionally, in above-mentioned each embodiment, when currently running indoor heat exchanger 30 is at least two, the room
Difference between 30 Outlet Temperature value of interior ambient temperature value and indoor heat exchanger be the indoor environment temperature value respectively with it is each
Difference average value between 30 Outlet Temperature value of the indoor heat exchanger.That is, the indoor environment temperature value and indoor heat exchanger
Average value of the difference between each indoor heat exchanger 30 corresponding (T2-To2) between 30 Outlet Temperature values.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or device.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be expressed in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, computer, clothes
Be engaged in device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
In addition, the description in " first ", " second " etc. involved in invention is used for description purposes only, and should not be understood as indicating
Or it implies its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " are defined as a result,
Feature can explicitly or implicitly include at least one of the features.In addition, technical solution between each embodiment can be with
It is combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when phase occurs in the combination of technical solution
Mutual contradiction or when cannot achieve should people think that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of multi-gang air conditioner, the multi-gang air conditioner includes controller, compressor, outdoor heat exchanger and indoor heat exchange
Device, which is characterized in that the multi-gang air conditioner further included cold heat exchanger, the first solenoid valve and second solenoid valve；
Wherein, the cold heat exchanger of crossing includes the first branch and the second branch, and the arrival end of the first branch is via described the
One solenoid valve is connect with the outlet end of the outdoor heat exchanger；The outlet end of the first branch is changed with each interior respectively
The arrival end of hot device connects, and the outlet end of the first branch is connect via throttle valve with the arrival end of the second branch；
The outlet end of the second branch is connect with the gas returning port of the compressor；
The gas outlet of the compressor is connect via the second solenoid valve with the arrival end of the outdoor heat exchanger；
The multi-gang air conditioner further includes being connected between the gas outlet of the compressor and the arrival end of the first branch
Third branch, third branch road is equipped with third solenoid valve；
The controller is controlled the multi-gang air conditioner and is run with the first operating status or the second operating status, wherein the
When one operating status, the controller controls first solenoid valve and second solenoid valve conducting, and the third solenoid valve is cut
Only；In the second operating status, the controller controls first solenoid valve and second solenoid valve cut-off, and third electricity
Magnet valve is connected.
2. multi-gang air conditioner as described in claim 1, which is characterized in that be in the first operation in the multi-gang air conditioner
When state, the controller then controls institute when the exchange capability of heat for judging the multi-gang air conditioner meets the first preset condition
It states multi-gang air conditioner and switches to the second operating status.
3. multi-gang air conditioner as claimed in claim 2, which is characterized in that the multi-gang air conditioner further includes for detecting
First temperature sensor of the outdoor heat exchanger Outlet Temperature value is sensed for detecting the second temperature of outdoor environment temperature value
Device, the third temperature sensor for detecting indoor environment temperature value, for detecting the indoor heat exchanger Outlet Temperature value
4th temperature sensor, the first pressure sensor of pressure at expulsion for detecting the compressor and for detecting the compression
The second pressure sensor of the back pressure of machine；
Difference of first preset condition between the outdoor heat exchanger Outlet Temperature value and outdoor environment temperature value is less than
First temperature threshold, and the difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is less than second temperature
Threshold value；Or the difference for the pressure at expulsion and back pressure that first preset condition is the compressor is less than the first preset pressure
Value, and the difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is less than second temperature threshold value.
4. multi-gang air conditioner as claimed in claim 3, which is characterized in that be in the second operation in the multi-gang air conditioner
When state, the controller then controls institute when the exchange capability of heat for judging the multi-gang air conditioner meets the second preset condition
It states multi-gang air conditioner and switches to the first operating status.
5. multi-gang air conditioner as claimed in claim 4, which is characterized in that second preset condition is the compressor
The degree of supercooling that exhaust pressure value is more than the second preset pressure value, the first branch exports is less than third temperature threshold, indoor ring
Difference between border temperature value and indoor heat exchanger Outlet Temperature value is more than the exhaust pressure of the 4th temperature threshold or the compressor
Power and the difference of back pressure are more than third preset pressure value.
6. multi-gang air conditioner as claimed in claim 5, which is characterized in that be in the second operation in the multi-gang air conditioner
When state, the controller is additionally operable to periodically obtain the degree of supercooling of the first branch outlet, and according to described first
The degree of supercooling of way outlet adjusts the aperture of the throttle valve.
7. multi-gang air conditioner as claimed in claim 6, which is characterized in that the controller is additionally operable to：
When degree of supercooling in first branch outlet is less than five temperature thresholds, the controller controls opening for the throttle valve
Degree increases；
When degree of supercooling in first branch outlet is more than six temperature thresholds, the controller controls opening for the throttle valve
Degree reduces；
Degree of supercooling in first branch outlet is greater than or equal to the 5th temperature threshold, and is less than or equal to the described 6th
When temperature threshold, the aperture that the controller controls the throttle valve remains unchanged；
Wherein, the 5th temperature threshold is less than the 6th temperature threshold.
8. multi-gang air conditioner as described in any one of claims 1 to 3, which is characterized in that the controller is additionally operable to：
When degree of supercooling in first branch outlet is less than five temperature thresholds, the controller controls opening for the throttle valve
Degree increases；
When degree of supercooling in first branch outlet is more than six temperature thresholds, the controller controls opening for the throttle valve
Degree reduces；
Degree of supercooling in first branch outlet is greater than or equal to the 5th temperature threshold, and is less than or equal to the described 6th
When temperature threshold, the aperture that the controller controls the throttle valve remains unchanged；
Wherein, the 5th temperature threshold is less than the 6th temperature threshold.
9. multi-gang air conditioner as described in any one of claims 1 to 3, which is characterized in that in currently running indoor heat exchange
When device is at least two, the difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is the indoor ring
The average value of the border temperature value difference between each indoor heat exchanger Outlet Temperature value respectively.
10. multi-gang air conditioner as claimed in claim 5, which is characterized in that in currently running indoor heat exchanger be at least
At two, the difference between the indoor environment temperature value and indoor heat exchanger Outlet Temperature value is the indoor environment temperature value
The average value of difference between each indoor heat exchanger Outlet Temperature value respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008861.3A CN105570990B (en) | 2016-01-04 | 2016-01-04 | Multi-gang air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008861.3A CN105570990B (en) | 2016-01-04 | 2016-01-04 | Multi-gang air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570990A CN105570990A (en) | 2016-05-11 |
| CN105570990B true CN105570990B (en) | 2018-07-13 |
Family
ID=55881418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610008861.3A Active CN105570990B (en) | 2016-01-04 | 2016-01-04 | Multi-gang air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570990B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839309B (en) * | 2017-02-04 | 2019-10-01 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioning, device and air-conditioning |
| CN107101336B (en) * | 2017-05-05 | 2019-06-25 | 广东美的暖通设备有限公司 | Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method |
| CN107843037B (en) * | 2017-10-31 | 2021-02-23 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and supercooling control device and method thereof |
| CN116538656A (en) * | 2022-01-26 | 2023-08-04 | 广东美的制冷设备有限公司 | Air conditioner, controller, control method and computer readable storage medium thereof |
| CN114992776B (en) * | 2022-07-13 | 2024-08-20 | 广东美的制冷设备有限公司 | Refrigerant leakage detection method and device for air conditioning system, air conditioner and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176525A (en) * | 1977-12-21 | 1979-12-04 | Wylain, Inc. | Combined environmental and refrigeration system |
| US4644756A (en) * | 1983-12-21 | 1987-02-24 | Daikin Industries, Ltd. | Multi-room type air conditioner |
| CN2357243Y (en) * | 1998-07-31 | 2000-01-05 | 海尔集团公司 | Cooling system for one driven many air-conditioners |
| CN2591494Y (en) * | 2002-06-29 | 2003-12-10 | 海尔集团公司 | Heat recovery device for multiple-air conditioner system |
| CN101769580A (en) * | 2009-01-06 | 2010-07-07 | 珠海格力电器股份有限公司 | Air conditioner heat pump hot water unit and working method thereof |
| CN201926065U (en) * | 2011-01-30 | 2011-08-10 | 山东欧锴空调科技有限公司 | High-efficiency water-cooled multi-connected unit |
-
2016
- 2016-01-04 CN CN201610008861.3A patent/CN105570990B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176525A (en) * | 1977-12-21 | 1979-12-04 | Wylain, Inc. | Combined environmental and refrigeration system |
| US4644756A (en) * | 1983-12-21 | 1987-02-24 | Daikin Industries, Ltd. | Multi-room type air conditioner |
| CN2357243Y (en) * | 1998-07-31 | 2000-01-05 | 海尔集团公司 | Cooling system for one driven many air-conditioners |
| CN2591494Y (en) * | 2002-06-29 | 2003-12-10 | 海尔集团公司 | Heat recovery device for multiple-air conditioner system |
| CN101769580A (en) * | 2009-01-06 | 2010-07-07 | 珠海格力电器股份有限公司 | Air conditioner heat pump hot water unit and working method thereof |
| CN201926065U (en) * | 2011-01-30 | 2011-08-10 | 山东欧锴空调科技有限公司 | High-efficiency water-cooled multi-connected unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105570990A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105570990B (en) | Multi-gang air conditioner | |
| CN104101127B (en) | Multi-split air conditioning system and defrosting control method thereof | |
| CN105423589B (en) | Air conditioner and its control method | |
| CN103574966B (en) | Heat pump type air conditioning system and defrosting method thereof | |
| CN104154673B (en) | A kind of refrigerating method of Three-pipe heat recovery multi-connected machine system and system | |
| CN104197581A (en) | Refrigerating and heating method and system of three-pipe heat recovery multiple-on-line system | |
| CN104930637A (en) | Four-way valve reversing control method and device and air conditioning system | |
| CN106871345A (en) | Defrosting system and air-conditioner are not shut down | |
| CN104422193B (en) | Refrigerating and heating liquid storage method, refrigerating and heating frost prevention method and air conditioning system | |
| CN104764111B (en) | Multi-connected air conditioning system and its defrosting control method | |
| CN111426010B (en) | Control method of air conditioning system, air conditioning system and computer storage medium | |
| CN103968503A (en) | Air conditioner outdoor unit, and defrosting method and device for air conditioner | |
| CN109916043A (en) | The control method and air-conditioning system of pattern switching | |
| CN104930770B (en) | The defrosting method and device of a kind of heat pump air conditioner | |
| CN107559955A (en) | Multiple on-line system and its low temperature control method | |
| CN107421072A (en) | Air conditioner and high-temperature-resistant control method thereof | |
| CN105066349B (en) | Indoor unit mode switching control method of heat recovery multi-split air conditioner and heat recovery multi-split air conditioner | |
| CN214581886U (en) | Air conditioner heat exchange structure, air conditioning system and air conditioner indoor unit | |
| CN104197571A (en) | Three-pipe heat recovery multiple-on-line system | |
| CN103225936A (en) | Air conditioning system with defrosting device and defrosting method thereof | |
| CN104197570A (en) | Heating method and system of three-pipe heat recovery multiple-on-line system | |
| CN105258276A (en) | Air conditioning system and control method thereof | |
| CN107192156B (en) | Air conditioner and defrosting control method and system of air conditioner | |
| CN104764115B (en) | Multiple on-line system | |
| CN109357431A (en) | A kind of module-combined-type air conditioner system and defrosting control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |