CN107192155A - A kind of air-conditioning system and its control method - Google Patents
A kind of air-conditioning system and its control method Download PDFInfo
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- CN107192155A CN107192155A CN201710347267.1A CN201710347267A CN107192155A CN 107192155 A CN107192155 A CN 107192155A CN 201710347267 A CN201710347267 A CN 201710347267A CN 107192155 A CN107192155 A CN 107192155A
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- valve
- heat exchanger
- indoor heat
- entrance point
- outlet end
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Classifications
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The present invention provides a kind of air-conditioning system, and the air-conditioning system includes：Compressor (1), indoor heat exchanger (2), outdoor heat exchanger (3) and throttling arrangement (4)；Valve module (5), it is disposed in the interior at the inlet ductwork of heat exchanger (2) (6) and export pipeline (7) position, refrigerant gets in heat exchanger (2), outlet (22) the outflow indoor heat exchanger (2) from indoor heat exchanger (2) from the import (21) of indoor heat exchanger (2) when it can be adjusted so that cooling system；Cause that refrigerant still gets in heat exchanger (2) from import (21), flows out indoor heat exchanger from outlet (22) when system is heated simultaneously；Inner tube temperature sensing part, is disposed in the interior import (21) place of heat exchanger (2).Accurate positioning can be formed to inner tube temperature sensing part by the present invention, to detect the minimum or maximum temperature of indoor set, inner tube temperature-sensitive bag is solved and position irrational domestic air conditioning industry issue.
Description
Technical field
The invention belongs to air-conditioning technical field, and in particular to a kind of air-conditioning system and its control method.
Background technology
Machine evaporator stream mode is relatively fixed in current domestic air conditioning, under refrigeration mode refrigerant flow direction just with system
The refrigerant flowing of heat pattern is on the contrary, so the refrigerant state variation tendency difference of same conduit positions in both modes, causes
Inner tube thermometer bulb positioning for new circuit design is extremely difficult, and indefinite sexual factor is relatively more.
Refrigeration mode and heating mode have corresponding control logic to protect, with ensure the normal reliability of operation of air-conditioning and
Stability, it is main to carry out detection judgement using inner tube temperature-sensitive bag temperature, and the setting of the position of the temperature-sensitive bag has very with refrigerant state
Important Relations, and optimal location in both modes is always deviated, therefore the positioning accuracy of inner tube temperature-sensitive bag is critically important, needs
Take into account the various operational modes of air-conditioning simultaneously.
The technical problem such as unreasonable, therefore the present invention are positioned because air-conditioning system of the prior art has inner tube temperature-sensitive bag
Research and design goes out a kind of air-conditioning system and its control method.
The 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 there is inner tube temperature-sensitive bag
Irrational defect is positioned, so as to provide a kind of air-conditioning system and its control method.
The present invention provides a kind of air-conditioning system, and it includes：
Compressor, indoor heat exchanger, outdoor heat exchanger and throttling arrangement；
Valve module, is arranged at the inlet ductwork of the indoor heat exchanger and export pipeline position, the valve module can
Refrigerant enters the indoor heat exchanger, from indoor heat exchanger from the import of the indoor heat exchanger when being adjusted so that cooling system
Outlet flow out the indoor heat exchanger；Cause that refrigerant still enters the indoor heat exchange from the import when system is heated simultaneously
Device, from the outlet outflow indoor heat exchanger；
Inner tube temperature sensing part, is arranged at the import of the indoor heat exchanger.
Preferably, the inlet ductwork includes the first entrance point of the relatively close indoor heat exchanger and is relatively distant from institute
State the second entrance point of indoor heat exchanger；
The export pipeline includes the first outlet end of the relatively close indoor heat exchanger and is relatively distant from the interior
The second outlet end of heat exchanger.
Preferably, the valve module, which includes being arranged in the inlet ductwork, is located at first entrance point and described second
The first on-off valve between entrance point and it is arranged on the export pipeline and is located at the first outlet end and the second outlet
The second on-off valve between end；
Tie point, the first outlet are also conjointly provided between first entrance point and the second outlet end
The second branch road is also conjointly provided between end and second entrance point, the valve module also includes being arranged on described first
The 3rd on-off valve on road and the 4th on-off valve being arranged on second branch road.
Preferably, the valve module includes the first triple valve being arranged in the inlet ductwork, first triple valve
Three ends be respectively connecting to first entrance point, second entrance point and the first outlet end；
Also include the second triple valve being arranged on the export pipeline, three ends of second triple valve are connected respectively
To the first outlet end, the second outlet end and first entrance point.
Preferably, the valve module includes the four-way valve being arranged in the inlet ductwork and the export pipeline, described
Four of four-way valve ends are respectively connecting to first entrance point, second entrance point, the first outlet end and described the
Two ports of export.
Preferably, the air-conditioning system includes indoor set and outdoor unit, and the indoor set includes the indoor heat exchanger
With the valve module, the outdoor unit includes the outdoor heat exchanger, the compressor and the throttling arrangement.
Preferably, the indoor heat exchanger and the outdoor heat exchanger are wave-fin formula heat exchanger；And/or, it is described
Throttling arrangement is electric expansion valve；And/or, said inner tube temperature sensing part is inner tube temperature-sensitive bag.
The present invention also provides a kind of control method of air-conditioning system, and it uses foregoing air-conditioning system, is heating system
Control and regulation are switched over when switching with refrigeration mode so that said inner tube temperature sensing part can be accurately placed in temperature phase
To higher or lower position.
Preferably, when the valve module includes first on-off valve, the second on-off valve, the 3rd on-off valve and the 4th break-make
During valve：
When system operation is in refrigeration mode, first on-off valve and second on-off valve are opened, described the is closed
Three on-off valves and the 4th on-off valve；
When system operation is in heating mode, the 3rd on-off valve and the 4th on-off valve are opened, described the is closed
One on-off valve and second on-off valve.
Preferably, when the valve module includes first triple valve and the second triple valve：
When system operation is in refrigeration mode, adjusts first triple valve, cause first entrance point and described the
Two entrance points are connected, and adjust second triple valve, the first outlet end is connected with the second outlet end；
When system operation is in heating mode, adjusts first triple valve, cause second entrance point and described the
One port of export is connected, and adjusts second triple valve, first entrance point is connected with the second outlet end.
Preferably, when the valve module includes the four-way valve：
When system operation is in refrigeration mode, adjusts the four-way valve, first entrance point and described second is entered
Mouth end is connected, and the first outlet end is connected with the second outlet end；
When system operation is in heating mode, adjusts the four-way valve, first entrance point and described second is gone out
Mouth end is connected, and the first outlet end is connected with second entrance point.
A kind of air-conditioning system and its control method that the present invention is provided have the advantages that：
1. the air-conditioning system and its control method of the present invention, at the inlet ductwork and export pipeline of heat exchanger indoors
The valve module of setting so that refrigeration when refrigerant reach indoor heat exchanger import when its temperature it is minimum, by interior
The evaporation and heat-exchange effect of heat exchanger, its temperature is gradually increasing, its temperature highest when reaching the outlet of indoor heat exchanger, therefore its temperature
Degree is the monotone variation gradually risen from import-indoor heat exchanger-outlet, and when heating, refrigerant reaches entering for indoor heat exchanger
Its temperature highest, the condensing heat-exchange effect by indoor heat exchanger during mouth, its temperature are gradually reduced, and reach going out for indoor heat exchanger
Its temperature is minimum during mouth, therefore its temperature is the monotone variation being gradually reduced from import-indoor heat exchanger-outlet, so will be interior
Pipe temperature sensing part is disposed in the interior at the import of heat exchanger, otherwise enable to the temperature sensing part to be located at temperature its lowest position
(during refrigeration) or, be located at temperature highest position (when heating), accurate positioning can be so formed to inner tube temperature sensing part,
To detect the minimum or maximum temperature of indoor set, with the generation for preventing from freezing or the extreme case such as burning out, inner tube sense is solved
Thermometer bulb positions irrational domestic air conditioning industry issue, improves product development efficiency, reduces experimental resources cost, the mould after optimization
Formula wants accurate quick than existing temperature-sensitive bag localization method, while air-conditioning reliability and comfortableness effect can be met；
2. the air-conditioning system and its control method of the present invention, are effectively improved the optimal inner tube potential temperature of machine evaporator in searching
The efficiency put, shortens product development cycle；The temperature detection Rule of judgment of different refrigerant states under various patterns is optimized, is carried
The high reliability of virtual protection function.
Brief description of the drawings
Fig. 1 is the kind of refrigeration cycle operating structure figure of the embodiment 1 of the air-conditioning system of the present invention；
Fig. 2 is that the embodiment 1 of the air-conditioning system of the present invention heats circular flow structure chart；
Fig. 3 is the kind of refrigeration cycle operating structure figure of the embodiment 2 of the air-conditioning system of the present invention；
Fig. 4 is that the embodiment 2 of the air-conditioning system of the present invention heats circular flow structure chart；
Fig. 5 is the kind of refrigeration cycle operating structure figure of the embodiment 3 of the air-conditioning system of the present invention；
Fig. 6 is that the embodiment 3 of the air-conditioning system of the present invention heats circular flow structure chart.
Reference is expressed as in figure：
1st, compressor；2nd, indoor heat exchanger；21st, import；22nd, export；3rd, outdoor heat exchanger；4th, throttling arrangement；5th, valve group
Part；51st, the first on-off valve；52nd, the second on-off valve；53rd, the 3rd on-off valve；54th, the 4th on-off valve；55th, the first triple valve；56、
Second triple valve；57th, four-way valve；6th, inlet ductwork；61st, the first entrance point；62nd, the second entrance point；7th, export pipeline；71st,
One port of export；72nd, second outlet end；8th, tie point；9th, the second branch road；10th, indoor set；11st, outdoor unit；12nd, tubule；13、
Big pipe.
Embodiment
Embodiment 1
As shown in Figure 1-2, the present invention provides a kind of air-conditioning system, and it includes：Compressor 1, indoor heat exchanger 2, outdoor are changed
Hot device 3 and throttling arrangement 4；
Valve module 5, is arranged at the inlet ductwork 6 of the indoor heat exchanger 2 and the position of export pipeline 7, the valve module 5
Refrigerant enters the indoor heat exchanger 2, from room from the import 21 of the indoor heat exchanger 2 when can be adjusted so that cooling system
Flow out the indoor heat exchanger 2 in the outlet 22 of interior heat exchanger 2；Cause that refrigerant still enters from the import 21 when system is heated simultaneously
Enter the indoor heat exchanger 2, flow out the indoor heat exchanger from the outlet 22；
At inner tube temperature sensing part, the import 21 for being arranged on the indoor heat exchanger 2.
By at the inlet ductwork and export pipeline of heat exchanger indoors set valve module, can regulating system refrigeration when
Refrigerant gets in heat exchanger from the import of indoor heat exchanger, flows out the indoor heat exchanger from outlet, and refrigerant is still when system is heated
So get in heat exchanger from the import, flow out the indoor heat exchanger from the outlet, so that refrigerant is reached in refrigeration
Its temperature is minimum during the import of indoor heat exchanger, acted on by the evaporation and heat-exchange of indoor heat exchanger, and its temperature is gradually increasing, and is reached
Its temperature highest during the outlet of indoor heat exchanger, therefore its temperature is the dullness gradually risen from import-indoor heat exchanger-outlet
Change；Refrigerant its temperature highest, condensing heat-exchange by indoor heat exchanger when reaching the import of indoor heat exchanger when heating
Effect, its temperature is gradually reduced, and its temperature is minimum when reaching the outlet of indoor heat exchanger, therefore its temperature is from import-interior
The monotone variation that heat exchanger-outlet is gradually reduced, so inner tube temperature sensing part is disposed in the interior at the import of heat exchanger, can
So that the temperature sensing part is either located at temperature its lowest position (during refrigeration) or positioned at temperature highest position (when heating),
Accurate positioning can be so formed to inner tube temperature sensing part, to detect the minimum or maximum temperature of indoor set, to prevent from freezing
Knot or the generation for the extreme case such as burning out, solve inner tube temperature-sensitive bag and position irrational domestic air conditioning industry issue, improve production
Product development efficiency, reduces experimental resources cost, and the pattern after optimization wants accurate quick than existing temperature-sensitive bag localization method, simultaneously
Air-conditioning reliability and comfortableness effect can be met.
The efficiency that the optimal inner tube potential temperature of machine evaporator is put in finding is effectively improved, product development cycle is shortened；It is excellent
Change the temperature detection Rule of judgment of different refrigerant states under various patterns, improve the reliability of virtual protection function.
Preferably, the inlet ductwork 6 includes the relatively close indoor heat exchanger 2 (namely close to the indoor heat exchange
The import 21 of device) the first entrance point 61 and be relatively distant from the indoor heat exchanger 2 (namely entering away from the indoor heat exchanger
The second entrance point 62 of mouth 21)；
The export pipeline 7 includes the relatively close indoor heat exchanger 2 (namely close to the outlet of the indoor heat exchanger
22) first outlet end 71 and it is relatively distant from the indoor heat exchanger 2 (namely outlet 22 away from the indoor heat exchanger)
Second outlet end 72.
By being set to include above-mentioned first, second entrance point and first, second outlet to inlet ductwork and export pipeline
The structure type at end, can be to open up branch road and on-off valve or triple valve or four-way valve provides bar between aforementioned four port
Part, enables to system to be acted on and complete paired systems by two ends in the inlet ductwork and two ends on export pipeline
Refrigerant flow switches over the effect of regulation so that refrigerant can be from indoor heat exchanger when still being heated when system is either freezed
Import to output flow, reach the purpose of refrigerant temperature dullness distribution, provided for the accurate position for determining inner tube the temperature module
Accurate guidance (be arranged at the import of indoor heat exchanger, be when the temperature is that system is minimum, heated during refrigeration system most
It is high).
Preferably, the valve module 5, which includes being arranged on, is located at first entrance point 61 and described in the inlet ductwork 6
The first on-off valve 51 between second entrance point 62 and it is arranged on the export pipeline 7 and is located at the and of first outlet end 71
The second on-off valve 52 between the second outlet end 72；
Tie point 8, described are also conjointly provided between first entrance point 61 and the second outlet end 72
The second branch road 9 is also conjointly provided between one port of export 71 and second entrance point 62, the valve module 5 also includes setting
The 3rd on-off valve 53 in the tie point 8 and the 4th on-off valve 54 being arranged on second branch road 9.
This is that the air-conditioning system of the present invention realizes the first preferred constructive form of switching stream control, by entering first
Tie point is connected between mouth end and second outlet end and the 3rd on-off valve is set on this branch road, the two ends can be realized
It is directly connected to, by connecting the second branch road between the second entrance point and first outlet end and the 4th break-make being set on this branch road
It valve, can realize being directly connected to for the two ends, and combine the first on-off valve set in inlet ductwork and in export pipeline
Second on-off valve of upper setting, can effectively be realized by acting with being mutually matched and (opening or close) between this four on-off valves
Refrigerant flows into indoor heat exchanger, through outlet outflow indoor heat exchanger and through export pipeline stream from inlet ductwork through import during refrigeration
Go out, when heating refrigerant from tie point (now outlet section due to the disconnection of the second on-off valve 52 be disconnected) through same described
Import gets in heat exchanger, then through the outlet outflow and (now inlet tube section is due to the first on-off valve through the second branch road 9
51 disconnection is disconnected) it is discharged, so just effectively complete and refrigerant flow has been controlled according to the intelligence switching under different mode
System, that is, open the first and second on-off valves 51 and 52 when freezing, and closes the third and fourth on-off valve 53 and 54, and the is opened when heating
Three and the 4th on-off valve 53 and 54, closes the first and second on-off valves 51 and 52.
Embodiment 2
Referring to Fig. 3-4, the present embodiment is effective substitute mode to four on-off valves of the valve module in embodiment 1, its
Remaining structure is same as Example 1, i.e., likewise, the inlet ductwork 6 includes first entering for the relatively close indoor heat exchanger 2
Mouth end 61 and the second entrance point 62 for being relatively distant from the indoor heat exchanger 2, the export pipeline 7 include the relatively close room
The first outlet end 71 of interior heat exchanger 2 and the second outlet end 72 for being relatively distant from the indoor heat exchanger 2,
The valve module 5 includes the first triple valve 55 being arranged in the inlet ductwork 6, first triple valve 5
Three ends are respectively connecting to first entrance point 61, second entrance point 62 and the first outlet end 71；
Also include the second triple valve 56 being arranged on the export pipeline 7, three ends point of second triple valve 56
The first outlet end 71, the second outlet end 72 and first entrance point 61 are not connected to.
This is that the air-conditioning system of the present invention realizes second of preferred constructive form of switching stream control, by inlet tube
First triple valve 55 is set on road and makes three of the triple valve to hold and is respectively connecting to first entrance point 61, described second enters
Mouth end 62 and the first outlet end 71, can be via triple valve and room by adjusting the first threeway valve regulation inlet ductwork
The import of interior heat exchanger is connected or is connected with the outlet, by setting the second triple valve 56 on export pipeline and making
Three ends of the triple valve are respectively connecting to the first outlet end 71, the second outlet end 72 and first entrance point
61, can be to be connected via triple valve with the import of indoor heat exchanger also by adjusting the second threeway valve regulation export pipeline
It is to be connected with the outlet, can be effectively realized by acting with being mutually matched and (any road being opened and closed) between the two triple valves
Refrigerant flows into indoor heat exchanger, through outlet outflow indoor heat exchanger and through export pipeline stream from inlet ductwork through import during refrigeration
Go out, so just effectively completed to refrigerant flow according to the intelligent switching control under different mode, that is, caused first when freezing
The left and right ends of triple valve 55 be connected (upper end disconnection), the left and right ends of the second triple valve 56 (lower end disconnection) be connected (see Fig. 3), heat
When the right-hand member of the first triple valve 55 is connected (left end disconnection) with upper end, the lower end of the second triple valve 56 is connected (left end disconnection) with right-hand member
(see Fig. 4).
Embodiment 3
Referring to Fig. 5-6, the present embodiment is two in four on-off valves or embodiment 2 to the valve module in embodiment 1
Effective substitute mode of triple valve, remaining structure is identical with embodiment 1 or 2, i.e., likewise, the inlet ductwork 6 is included relatively
It is described close to the first entrance point 61 and the second entrance point 62 for being relatively distant from the indoor heat exchanger 2 of the indoor heat exchanger 2
Export pipeline 7 includes the first outlet end 71 of the relatively close indoor heat exchanger 2 and is relatively distant from the indoor heat exchanger 2
Second outlet end 72；
The valve module 5 includes the four-way valve 57 being arranged on the inlet ductwork 6 and the export pipeline 7, described four
Four ends of port valve 57 are respectively connecting to first entrance point 61, second entrance point 62, the and of first outlet end 71
The second outlet end 72.
This is that the air-conditioning system of the present invention realizes the third preferred constructive form of switching stream control, by inlet tube
The four-way valve 57 that is set on road and export pipeline simultaneously makes four ends of the four-way valve be respectively connecting to first entrance point 61, institute
The second entrance point 62 and the first outlet end 71 and second outlet end 72 are stated, can be entered by adjusting four-way valve regulation first
Mouth end 61 is to be connected or with second outlet end 72 be connected and adjust first outlet end 71 with the second entrance point 62 to be and second
The port of export 72 is connected or is connected with the second entrance point 62, can have by the regulation of four-way valve (so that where two-way on-off)
Refrigerant flows into indoor heat exchanger, through outlet outflow indoor heat exchanger and through outlet from inlet ductwork through import when effect realizes refrigeration
Pipeline flows out, and has so just effectively completed to refrigerant flow according to the intelligent switching control under different mode, that is, has made when freezing
Four-way valve 57 it is left be connected with upper two ends, it is lower be connected with right two ends (see Fig. 5), when the heating so that left and right two of four-way valve 57
End is connected, lower and upper two ends are connected (see Fig. 6).
Preferably, referring to shown in Fig. 1-6, the air-conditioning system includes indoor set 10 and outdoor unit 11, and the indoor set
10 include the indoor heat exchanger 2 and the valve module 5, and the outdoor unit 11 includes the outdoor heat exchanger 3, the compressor
1 and the throttling arrangement 4.This is the preferred constructive form that air-conditioning of the invention is used as split-type air conditioner.
Preferably, the indoor heat exchanger 2 and the outdoor heat exchanger 3 are wave-fin formula heat exchanger；And/or, institute
Throttling arrangement 4 is stated for electric expansion valve；And/or, said inner tube temperature sensing part is inner tube temperature-sensitive bag.This is the air-conditioning system of the present invention
The preferred kind and structure type of indoor and outdoor heat exchanger in system, the preferred kind and structure type of throttling arrangement and interior
The preferred kind and structure type of pipe temperature sensing part.
Embodiment 4
The present invention also provides a kind of control method of air-conditioning system, and it uses foregoing air-conditioning system, is heating system
Control and regulation are switched over when switching with refrigeration mode so that said inner tube temperature sensing part can be accurately placed in temperature phase
To higher or lower position.
The valve module set at the inlet ductwork and export pipeline of the heat exchanger indoors that the present invention passes through air-conditioning system, energy
Refrigerant gets in heat exchanger from the import of indoor heat exchanger, flows out the indoor heat exchanger from outlet during enough regulating system refrigeration,
Refrigerant still gets in heat exchanger from the import, the indoor heat exchanger is flowed out from the outlet when system is heated, and adjusts the valve
Component 5 so that system is operated in cooling or heating mode, and refrigerant is all the time from the import of the indoor heat exchanger 2
21 enter the indoor heat exchanger 2, flow out the outdoor heat exchanger 2 from the outlet 22 of the indoor heat exchanger 2；So that
Refrigeration when refrigerant reach indoor heat exchanger import when its temperature it is minimum, by indoor heat exchanger evaporation and heat-exchange make
With its temperature is gradually increasing, its temperature highest when reaching the outlet of indoor heat exchanger, therefore its temperature is changed from import-interior
The monotone variation that hot device-outlet gradually rises；Refrigerant its temperature highest, warp when reaching the import of indoor heat exchanger when heating
The condensing heat-exchange effect of indoor heat exchanger is crossed, its temperature is gradually reduced, and its temperature is minimum when reaching the outlet of indoor heat exchanger, because
This its temperature is the monotone variation being gradually reduced from import-indoor heat exchanger-outlet, so inner tube temperature sensing part is arranged on into room
At the import of interior heat exchanger, the temperature sensing part is enabled to either to be located at temperature its lowest position (during refrigeration) or positioned at temperature
Highest position (when heating) is spent, accurate positioning can be so formed to inner tube temperature sensing part, to detect indoor set most
Low or maximum temperature, with the generation for preventing from freezing or the extreme case such as burning out, solves inner tube temperature-sensitive bag and positions irrational family
Air conditioner industry problem is used, product development efficiency is improved, experimental resources cost is reduced, the pattern after optimization is than existing temperature-sensitive Bao Ding
Position method wants accurate quick, while air-conditioning reliability and comfortableness effect can be met.
The efficiency that the optimal inner tube potential temperature of machine evaporator is put in finding is effectively improved, product development cycle is shortened；It is excellent
Change the temperature detection Rule of judgment of different refrigerant states under various patterns, improve the reliability of virtual protection function.
Preferably, when the valve module includes first on-off valve 51, the second on-off valve 52, the 3rd on-off valve 53 and the
During four on-off valves 54：
When system operation is in refrigeration mode, first on-off valve 51 and second on-off valve 52 are opened, institute is closed
State the 3rd on-off valve 53 and the 4th on-off valve 54；
When system operation is in heating mode, the 3rd on-off valve 53 and the 4th on-off valve 54 are opened, institute is closed
State the first on-off valve 51 and second on-off valve 52.
Referring to Fig. 1-2, this is that (valve module is logical including first, second, third and fourth for the first embodiment of the invention
Disconnected valve) specific preferred control method, when system operation is in refrigeration mode, such as Fig. 1, by opening the first and second break-makes
Valve 51 and 52, disconnects the third and fourth on-off valve 53 and 54, enables to the first and second branch roads 8 and 9 to be disconnected, and refrigerant is from the
Two entrance points 62 flow to the first entrance point 61, indoor heat exchanger 2, first outlet end 71, second outlet end 72, so as to complete to room
The refrigeration evaporator heat absorption of interior heat exchanger, now effectively causing the import 21 of indoor heat exchanger turns into temperature lowest part；Correspondingly,
When system is heated, such as Fig. 2, by closing the first and second on-off valves 51 and 52, opens the third and fourth on-off valve 53 and 54, energy
Enough so that the first and second branch roads 8 and 9 are switched on, refrigerant flow to first outlet end 71, indoor heat exchanger from the second entrance point 62
2nd, the first entrance point 61, second outlet end 72, so as to complete to heat condensation heat release to indoor heat exchanger, now effectively cause
The import 21 of indoor heat exchanger turns into temperature highest point, then effectively sets inner tube temperature sensing part in the import 21, just can
Measure system refrigerant is minimum or maximum temperature, complete to be arranged on inner tube temperature sensing part temperature is minimum or maximum temperature at essence
True positioning.
Preferably, when the valve module includes first triple valve 55 and the second triple valve 56：
When system operation is in refrigeration mode, adjusts first triple valve 55, cause first entrance point 61 and institute
State the second entrance point 62 to be connected, adjust second triple valve 56, cause the first outlet end 71 and the second outlet end
72 are connected；
When system operation is in heating mode, adjusts first triple valve 55, cause second entrance point 62 and institute
State first outlet end 71 to be connected, adjust second triple valve 56, cause first entrance point 61 and the second outlet end
72 are connected.
Referring to Fig. 3-4, this is the tool of second of embodiment (valve module includes the first and second triple valves) of the present invention
The preferred control method of body, when system operation is in refrigeration mode, such as Fig. 3, by the left and right ends connection of the first triple valve, upper end
Disconnect, the left and right ends of the second triple valve are connected, lower end disconnects, and enables to refrigerant effectively to be flow to from the second entrance point 62
First entrance point 61, indoor heat exchanger 2, first outlet end 71, second outlet end 72, so as to complete the refrigeration to indoor heat exchanger
Evaporation endothermic, now effectively causing the import 21 of indoor heat exchanger turns into temperature lowest part；Correspondingly, when system is heated, such as
Fig. 4, the upper end of the first triple valve 55 and right-hand member is connected, left end disconnects, the lower end of the second triple valve 56 and right-hand member are connected, under
End disconnects, and enables to refrigerant to flow to the second triple valve 56, the first entrance point 61, indoor heat exchanger 2, the from second outlet end 72
One port of export 71, the first triple valve 55, the second entrance point 62, so as to complete to heat condensation heat release to indoor heat exchanger, now
Effectively so that the import 21 of indoor heat exchanger turns into temperature highest point (being still refrigerant import), then effectively in the import 21
Set inner tube temperature sensing part, just can measure system refrigerant is minimum or maximum temperature, completion is arranged on to inner tube temperature sensing part
Temperature is minimum or maximum temperature at accurate positioning.
Preferably, when the valve module 5 includes the four-way valve 57：
When system operation is in refrigeration mode, adjusts the four-way valve 57, cause first entrance point 61 and described the
Two entrance points 62 are connected, and the first outlet end 71 is connected with the second outlet end 72；
When system operation is in heating mode, adjusts the four-way valve 57, cause first entrance point 61 and described the
Two ports of export 72 are connected, and the first outlet end 71 is connected with second entrance point 62.
Referring to Fig. 5-6, this is the specific preferred of the third embodiment (valve module includes a four-way valve) of the present invention
Control method, when system operation is in refrigeration mode, such as Fig. 5 connects the right-hand member of four-way valve with lower end, left end and upper termination
It is logical, enable to refrigerant effectively to flow to the first entrance point 61, indoor heat exchange from the second entrance point 62 via the four-way valve 57
Device 2, first outlet end 71, second outlet end 72, so as to complete the refrigeration evaporator heat absorption to indoor heat exchanger, now effectively make
Obtaining the import 21 of indoor heat exchanger turns into temperature lowest part；Correspondingly, when system is heated, such as Fig. 6, by the upper end of four-way valve 57 with
Lower end is connected, left end is connected with right-hand member, is enabled to refrigerant to flow to first via the four-way valve 57 from second outlet end 72 and is entered
Mouth end 61, indoor heat exchanger 2, first outlet end 71, four-way valve 57, the second entrance point 62, so as to complete to indoor heat exchanger
Condensation heat release is heated, now effectively causing the import 21 of indoor heat exchanger turns into temperature highest point (being still refrigerant import), in
Be effectively the import 21 set inner tube temperature sensing part, just can measure system refrigerant is minimum or maximum temperature, complete pair
Inner tube temperature sensing part be arranged on that temperature is minimum or maximum temperature at accurate positioning.
The present invention solves following technical problem：
1) solve inner tube temperature-sensitive bag and position irrational domestic air conditioning industry issue, meet reliability requirement；
2) efficiency that the optimal inner tube potential temperature of machine evaporator is put in finding is improved, product development cycle is shortened；
3) the temperature detection Rule of judgment of different refrigerant states under various patterns is optimized, virtual protection function is improved
Reliability；
Beneficial effect：
The refrigerant flow switching construction of the inner tube temperature-sensitive bag positioning of the present invention is positioned not to solve inner tube temperature-sensitive bag
Rational domestic air conditioning industry issue, improves product development efficiency, reduces experimental resources cost.Pattern after optimization is than existing
Temperature-sensitive bag localization method wants accurate quick (being embodied in embodiment), while air-conditioning reliability and comfortableness effect can be met.
By increasing multiple on-off valves and branch road or triple valve or four-way valve in interior machine inlet/outlet pipe, programme-control is freely cut
Change refrigerant flow direction.Change the refrigerant flow direction of indoor under traditional refrigerant flow direction, unified cooling and warming pattern, accurately
Positioning inner tube warming thermometer bulb position, improve air-conditioning reliability, solve that pattern is different and optimal location (the refrigeration of temperature-sensitive bag
The inner tube warming thermometer bulb optimal location heated under both of which is different, and refrigeration mode optimal location is exactly cold in whole stream
The minimum position of matchmaker's temperature, it is refrigerant temperature highest position in whole stream to heat) it is different and cause control logic effect poor
The problem of.
Referring to accompanying drawing 1-2, this figure is refrigerant flow switching flow figure.Illustrate that refrigerant is run under the various patterns of air-conditioning to be entered in figure
Go out the switching control of interior machine heat exchanger stream:
Under such as Fig. 1, kind of refrigeration cycle pattern, refrigerant leads to after outdoor side condenser (i.e. outdoor heat exchanger 3) condensation throttling
Too small pipe connected pipe 12, gets in side evaporator (i.e. indoor heat exchanger 2), the first break-make is opened by valve module 5, during refrigeration
Valve 51, closes the 4th on-off valve 54, and then refrigerant is flowed through behind indoor and come out from big pipe 13, now opens the second on-off valve 52,
The 3rd on-off valve 53 is closed, then flows back to outdoor unit 11.
Such as Fig. 2, heat under circulation pattern, refrigerant directly from compressor come out after by big pipe connected pipe 13, get in
Side evaporator 2, by valve module 5, opens the 3rd on-off valve 53, closes the second on-off valve 52, now open four-way when heating
Disconnected valve 54, closes the first on-off valve 51, and then refrigerant is flowed through behind indoor and come out from tubule 12, then flows back to outdoor unit.
The technical controlling can ensure that completely passes in and out interior machine heat exchanger path direction unanimously under both of which, so that in optimizing
The technical controlling (being embodied in embodiment) of pipe temperature-sensitive bag positioning, takes full advantage of the exchange capability of heat of inner side evaporator.
Embodiment：
Variable frequency cold domestic air conditioning split air conditioner increases multiple break-make valve modules or triple valve in interior machine heat exchanger pipeline leading portion
Device or four-way valve module, change the flow direction that refrigerant enters interior machine heat exchanger, it is ensured that enter under cooling and warming both of which
Go out the control of interior machine heat exchanger path direction unanimously.To reach the quick action effect for determining inner tube temperature-sensitive package location.
Refrigerant flow switching control specific implementation is as follows：
Air conditioner increases by 4 on-off valve devices in interior machine heat exchanger pipeline leading portion, as shown in Figure 1-2, under refrigeration mode (such as
Fig. 1), outer machine low temperature liquid refrigerant by tubule 12 (connecting tube) flow in machine heat exchanger, by the control of 4 on-off valves,
Liquid-dividing head leading portion makes refrigerant flow direction be interior machine branch import (i.e. the second entrance point 62), and the first on-off valve is opened during refrigeration
51, the 4th on-off valve 54 is closed, then refrigerant flows through and the second on-off valve 52 is now opened behind indoor, close the 3rd on-off valve
53, come out from big pipe 13, then flow back to outdoor unit 11.Assuming that the refrigerant flow direction of interior machine heat exchanger is 51-52, upper Guan Weiliu
Way outlet, flows when refrigerant becomes gaseous state low-temperature condition after the evaporation of interior machine after channel valve, then by managing (connecting tube) greatly
Outer machine is returned, refrigeration is completed.
Under heating mode (such as Fig. 2), outer machine high-temperature gas refrigerant flows to interior machine heat exchanger, warp by big pipe 13 (connecting tube)
Channel valve control is crossed, makes refrigerant flow direction as refrigeration mode in liquid-dividing head leading portion, is that interior machine branch import (is now the
Two ports of export 72), it is assumed that the refrigerant flow direction of interior machine heat exchanger is 53-54, and down tube is flowing path outlet.Refrigerant is directly from compression
Machine come out after by by big pipe connected pipe 13, getting in side evaporator, by on-off valve, when heating open the 3rd on-off valve
53, the second on-off valve 52 is closed, then refrigerant flows through and the 4th on-off valve 54 is now opened behind indoor, close the first on-off valve
51, come out from tubule 12, then flow back to outdoor unit.This process refrigerant in the flow direction of evaporator as refrigeration mode, it is cold
Matchmaker's temperature change just with refrigeration on the contrary, can point-device judgement reveal during Guan Wen variation tendency, and heat
When inner tube temperature need to gather optimum point and refrigeration when it is almost consistent, inner tube temperature-sensitive package location is more representative.
Inner tube temperature-sensitive bag location technology
Current inner tube temperature-sensitive bag location technology respectively flows to do many temperature combination experiments under cooling and warming pattern in evaporator
Road difference cloth thermocouple detection pipe temperature change, the minimum position of each stream temperature of evaporator is under refrigeration mode under different operating modes
Optimal position, temperature highest position is position optimal under heating mode, then because refrigerant flow is in opposite direction, often
The position of cooling and warming optimum point is not, in same point, and to differ greatly, and inner tube thermometer bulb can only be arranged in a position, so that
Can only select one select in method, sacrificing accuracy, this is not an optimal method
Direction is imported and exported in the interior machine refrigerant flowing that refrigerant flowing switch mode can unify cooling and warming pattern very well, works as system
During chill formula, into interior machine first evaporator circuit for whole pipe passage temperature minimum point (i.e. evaporator (interior machine)
Import), the position temperature can for formulate anti-freeze relay protective scheme control and automatic cleaning technology control condition.Together
When whole pipe passage of position when being also heating mode thermal self-restraint stress, the position temperature can be for formulating anti-height
Temperature, overload protection logic control.Product development before need to take into account the situation for heating refrigerant reverse flow, make temperature-sensitive package location simultaneously
It is not optimum point, and the simply equalization point of two patterns.Being accurately positioned for inner tube temperature-sensitive package location can be avoided many products
Exploitation misgivings, contrast changes conventional flow path mode, and the more convenient optimal location for efficiently finding inner tube temperature-sensitive bag of the control is
Time and resource are saved in product development, improve the reliability of air-conditioning products.
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 merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these improvement and modification also should be regarded as this
The protection domain of invention.
Claims (11)
1. a kind of air-conditioning system, it is characterised in that：Including：
Compressor (1), indoor heat exchanger (2), outdoor heat exchanger (3) and throttling arrangement (4)；
Valve module (5), is arranged at the inlet ductwork of the indoor heat exchanger (2) (6) and export pipeline (7) position, the valve
Refrigerant enters the interior from the import (21) of the indoor heat exchanger (2) when component (5) can be adjusted so that cooling system
Heat exchanger (2), outlet (22) the outflow indoor heat exchanger (2) from indoor heat exchanger (2)；It is cold when simultaneously system being heated
Matchmaker still enters the indoor heat exchanger (2) from the import (21), flows out the indoor heat exchanger from the outlet (22)；
Inner tube temperature sensing part, is arranged on the import (21) place of the indoor heat exchanger (2).
2. air-conditioning system according to claim 1, it is characterised in that：The inlet ductwork (6) includes relatively close described
The first entrance point (61) of indoor heat exchanger (2) and the second entrance point (62) for being relatively distant from the indoor heat exchanger (2)；
The export pipeline (7) includes the first outlet end (71) of the relatively close indoor heat exchanger (2) and is relatively distant from institute
State the second outlet end (72) of indoor heat exchanger (2).
3. air-conditioning system according to claim 2, it is characterised in that：The valve module (5) includes being arranged on the import
It is located at the first on-off valve (51) between first entrance point (61) and second entrance point (62) on pipeline (6) and sets
Put the second break-make being located on the export pipeline (7) between the first outlet end (71) and the second outlet end (72)
Valve (52)；
Tie point (8) is also conjointly provided between first entrance point (61) and the second outlet end (72), it is described
The second branch road (9), the valve module (5) are also conjointly provided between first outlet end (71) and second entrance point (62)
Also include the 3rd on-off valve (53) being arranged in the tie point (8) and the be arranged on second branch road (9) the 4th
On-off valve (54).
4. air-conditioning system according to claim 2, it is characterised in that：The valve module (5) includes being arranged on the import
The first triple valve (55) on pipeline (6), three ends of first triple valve (55) are respectively connecting to first entrance point
(61), second entrance point (62) and the first outlet end (71)；
Also include the second triple valve (56) being arranged on the export pipeline (7), three ends of second triple valve (56)
It is respectively connecting to the first outlet end (71), the second outlet end (72) and first entrance point (61).
5. air-conditioning system according to claim 2, it is characterised in that：The valve module (5) includes being arranged on the import
Four-way valve (57) on pipeline (6) and the export pipeline (7), four of the four-way valve (57) ends are respectively connecting to described the
One entrance point (61), second entrance point (62), the first outlet end (71) and the second outlet end (72).
6. the air-conditioning system according to one of claim 1-5, it is characterised in that：The air-conditioning system includes indoor set (10)
With outdoor unit (11), and the indoor set (10) include the indoor heat exchanger (2) and the valve module (5), the outdoor unit
(11) outdoor heat exchanger (3), the compressor (1) and the throttling arrangement (4) are included.
7. the air-conditioning system according to one of claim 1-6, it is characterised in that：The indoor heat exchanger (2) and the room
External heat exchanger (3) is wave-fin formula heat exchanger；And/or, the throttling arrangement (4) is electric expansion valve；And/or, it is described
Inner tube temperature sensing part is inner tube temperature-sensitive bag.
8. a kind of control method of air-conditioning system, it is characterised in that：Usage right requires the air-conditioning system described in one of 1-7, makes
System switches over control and regulation when heating and switching with refrigeration mode so that said inner tube temperature sensing part can be by fixed exactly
Position is in the of a relatively high or relatively low position of temperature.
9. control method according to claim 8, it is characterised in that：When the valve module include first on-off valve,
When the second on-off valve, the 3rd on-off valve and four on-off valves：
When system operation is in refrigeration mode, first on-off valve (51) and second on-off valve (52) are opened, institute is closed
State the 3rd on-off valve (53) and the 4th on-off valve (54)；
When system operation is in heating mode, the 3rd on-off valve (53) and the 4th on-off valve (54) are opened, institute is closed
State the first on-off valve (51) and second on-off valve (52).
10. control method according to claim 8, it is characterised in that：When the valve module includes first triple valve
(55) and during the second triple valve (56)：
When system operation is in refrigeration mode, adjusts first triple valve (55), cause first entrance point (61) and institute
State the second entrance point (62) to be connected, adjust second triple valve (56), cause the first outlet end (71) and described second
The port of export (72) is connected；
When system operation is in heating mode, adjusts first triple valve (55), cause second entrance point (62) and institute
State first outlet end (71) to be connected, adjust second triple valve (56), cause first entrance point (61) and described second
The port of export (72) is connected.
11. control method according to claim 8, it is characterised in that：When the valve module (5) includes the four-way valve
(57) when：
When system operation is in refrigeration mode, adjusts the four-way valve (57), cause first entrance point (61) and described the
Two entrance points (62) are connected, and the first outlet end (71) is connected with the second outlet end (72)；
When system operation is in heating mode, adjusts the four-way valve (57), cause first entrance point (61) and described the
Two ports of export (72) are connected, and the first outlet end (71) is connected with second entrance point (62).
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| CN201710347267.1A CN107192155A (en) | 2017-05-17 | 2017-05-17 | A kind of air-conditioning system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347267.1A CN107192155A (en) | 2017-05-17 | 2017-05-17 | A kind of air-conditioning system and its control method |
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| CN201710347267.1A Pending CN107192155A (en) | 2017-05-17 | 2017-05-17 | A kind of air-conditioning system and its control method |
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| CN108019974A (en) * | 2018-01-25 | 2018-05-11 | 天津商业大学 | Incomplete chiller-heat pump system among the once throttling of second vapor injection |
| CN108088109A (en) * | 2018-01-25 | 2018-05-29 | 天津商业大学 | Heat pump system with second vapor injection |
| CN108088110A (en) * | 2018-01-25 | 2018-05-29 | 天津商业大学 | Incomplete chiller-heat pump system among second throttle |
| CN112212462A (en) * | 2020-09-21 | 2021-01-12 | 青岛海尔空调电子有限公司 | Air conditioner and control method thereof |
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| JP2008116135A (en) * | 2006-11-06 | 2008-05-22 | Daikin Ind Ltd | Heat exchanger and refrigeration device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108019974A (en) * | 2018-01-25 | 2018-05-11 | 天津商业大学 | Incomplete chiller-heat pump system among the once throttling of second vapor injection |
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| CN108088110A (en) * | 2018-01-25 | 2018-05-29 | 天津商业大学 | Incomplete chiller-heat pump system among second throttle |
| CN108019974B (en) * | 2018-01-25 | 2024-04-05 | 天津商业大学 | Primary throttling and intermediate incomplete cooling heat pump system for intermediate air supplementing |
| CN108088109B (en) * | 2018-01-25 | 2024-04-05 | 天津商业大学 | Heat pump system with middle air supplementing function |
| CN108088110B (en) * | 2018-01-25 | 2024-04-05 | 天津商业大学 | Secondary throttling middle incomplete cooling heat pump system |
| CN112212462A (en) * | 2020-09-21 | 2021-01-12 | 青岛海尔空调电子有限公司 | Air conditioner and control method thereof |
| WO2022017546A1 (en) * | 2020-09-21 | 2022-01-27 | 青岛海尔空调电子有限公司 | Air conditioner and control method therefor |
| CN112212462B (en) * | 2020-09-21 | 2023-04-25 | 青岛海尔空调电子有限公司 | Air conditioner and control method thereof |
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