CN101762124B - Electric throttling distributor, air conditioner system and flow control method thereof - Google Patents
Electric throttling distributor, air conditioner system and flow control method thereof Download PDFInfo
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- CN101762124B CN101762124B CN2008101813899A CN200810181389A CN101762124B CN 101762124 B CN101762124 B CN 101762124B CN 2008101813899 A CN2008101813899 A CN 2008101813899A CN 200810181389 A CN200810181389 A CN 200810181389A CN 101762124 B CN101762124 B CN 101762124B
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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
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
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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
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an electric throttling distributor, an air conditioner system and a throttling distribution control method of the air conditioner system employing the electric throttling distributor. The throttling distribution system for the air conditioner flow in prior art has the defects of more components and complicated pipeline connection. An electric throttling distributor is arranged between an outdoor heat exchanger and an indoor heat exchanger, and used as a throttling and distribution system to realize the flow throttling and distribution of coolant of each indoor heat exchanger or each group of heat exchangers of the indoor heat exchanger, therefore the flow throttling and distribution of the indoor heat exchanger of the multi-split air conditioner system or the flow throttling and distribution of the air conditioner system comprising groups of heat exchangers is completed; the flow distribution after throttling between the heat-exchanging units or groups of heat exchangers is uniform, therefore the heat exchange function is fully performed; and the waste of the heat exchange area is reduced, therefore the efficiency of the whole air conditioner system is improved.
Description
Technical field
The invention belongs to a kind of electric throttling distributor, and a kind of flow control methods that uses air-conditioning system He this air-conditioning system of this electric throttling distributor is provided.
Background technology
Air-conditioning system of the prior art mostly comprises the parts such as indoor heat converter, outdoor heat converter, compressor and throttling arrangement, one drag in many air-conditioning systems at some, in order to improve the heat exchange efficiency of heat exchanger, the assignment of traffic of inner refrigerant is technological difficulties always; Many systems all adopt electric expansion valve that each indoor set is controlled separately and dispense flow rate, it is disclosed scheme in 200610145015.2 the application for a patent for invention Publication Specification such as the application number of on November 29th, 2006 application, just adopt and transfer valve module to be used for the electric expansion valve that intelligence is regulated described each indoor set to each indoor set by a control, thereby realize that one drags the distribution according to need of many air conditioner coolant flow quantities.Be the 02137580.1 disclosed scheme of patent of invention specification of announcing on October 23rd, 2002 application and the application number of authorizing on September 26th, 2007 and for example, it also is the flow that controls to separately the refrigerant of each indoor set by the controller enforcement of controlling respectively each indoor set, thereby finish the assignment of traffic of multi-split air conditioner, and automatically regulate open degree and the refrigerant flow of electric expansion valve, make every indoor set assignment of traffic even, thereby improve the efficient of whole air-conditioning system.
Control to the flow of the refrigerant of each indoor set by above-mentioned control mode, the flow of each indoor set can be realized separately control, service precision is higher, but the relative usage parts are more, are that each indoor set of disclosed scheme all disposes separately an electric expansion valve and valve module is transferred in a control in 200610145015.2 the application for a patent for invention Publication Specification such as the application number of on November 29th, 2006 application.Number of components is many like this, and manufacturing cost is very high, and pipeline connects complicated, and simultaneously because the quantity of control circuit and valve is corresponding increases, its rate of breakdown also may corresponding increasing.The application number that on September 26th, 2007 authorized is to have too same problem in the 02137580.1 patent of invention specification of announcing.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is that to overcome the number of components that prior art exists many, manufacturing cost is high, pipeline connects complicated problem, for the air-conditioning system of the multi-group heat exchanger that uses a plurality of indoor heat converters or an indoor heat converter or other refrigeration system as with the fridge-freezer of a plurality of refrigerating evaporators etc., a kind of control is relatively simple, easy to install, manufacturing cost is lower electric throttling distributor and corresponding flow control methods thereof are provided, a kind of air-conditioning system of using this electric throttling distributor also is provided simultaneously.
For this reason, the present invention is by the following technical solutions:
A kind of electric throttling distributor, comprise shell, a valve pocket is arranged in the shell, valve pocket is taken over at least one input and is connected, be provided with a plurality of throttle orifices on this electric throttling distributor, this electric throttling distributor is realized the distribution of flow between described a plurality of throttle orifice by actuation mechanism, described actuation mechanism comprises described shell outward fixing coil component and the action element in the shell, thereby thereby by make action element action in the shell realize distribution to flow between described a plurality of throttle orifices to described coil component energising.
Preferably, described electric throttling distributor also includes a plurality of discharge conections, and described throttle orifice is connected with described discharge conection respectively, and the latus rectum of described throttle orifice is less than the latus rectum of described discharge conection.
Preferably, described actuation mechanism is that a stepper motor drives.
Preferably, described stepper motor comprises the outer fixing coil component of described shell and the magnetic rotor component in the shell, described magnetic rotor component also is fixed with a drive disk assembly, described magnetic rotor component, drive disk assembly drive a guiding valve and constantly rotate, thereby realize the distribution to flow between described a plurality of throttle orifices.
Optionally, the coil component that described actuation mechanism is fixed except described shell and the action element in the shell also comprise the fixing attractor that a soft magnet material processes; The returning spring that arranges between the guiding valve that action element in the described shell is driven by described movable part for the movable part that is processed by soft magnet material of reciprocating action radially, and described movable part and the described attractor, described movable part is with movable pulley reciprocating action under the effect of electromagnetic force and returning spring, thereby realizes the distribution to flow between described a plurality of throttle orifices.
The present invention also provides following technical scheme:
A kind of air-conditioning system, comprise compressor, at least one group of outdoor heat converter, many group indoor heat converters or multi-group heat exchanger, described air-conditioning system also comprises one of them electric throttling distributor described above, each throttle orifice of described electric throttling distributor respectively with many groups indoor heat converter or multi-group heat exchanger wherein one group be connected.
Preferably, described air-conditioning system also comprises with described electric throttling distributor and detects accordingly the control circuit system, described detection control circuit system is mainly the detection control circuit system that the corresponding discharge between the described throttle orifice distributes, it comprises digital signal processing unit, to the detection signal delivery unit of described digital signal processing unit input signal, receive the control module from the digital signal processing unit output signal.
Preferably, described detection signal to described digital signal processing unit input signal comprises the outlet temperature signal of indoor heat converter.
Preferably, described reception mainly receives control signal to assignment of traffic from the control module of digital signal processing unit output signal, and controls corresponding electric throttling distributor action.
Optionally, described compressor is frequency-changeable compressor, described reception mainly receives control signal to compressor, electric throttling distributor from the control module of digital signal processing unit output signal, and controls simultaneously rotating speed and the electric throttling distributor action of compressor.
Preferably, the processing mode of described digital signal processing unit adopts fuzzy control method.
The present invention also provides following technical scheme:
A kind of flow control methods of air-conditioning system, air-conditioning system comprises compressor, at least one group of outdoor heat converter, many group indoor heat converters or multi-group heat exchanger, air-conditioning system also comprises electric throttling distributor as described above and carries out the detection control circuit system that flow system flow distributes for this electric throttling distributor, each throttle orifice of described electric throttling distributor respectively with many groups indoor heat converter or multi-group heat exchanger wherein one group be connected; Air-conditioning system is according to the situation of indoor heat converter or heat exchanger, judge by the analysis that detects the control circuit system, export the described electric throttling distributor of corresponding signal controlling, make cold-producing medium carry out after the distribution of flow and the throttling heat exchanger to indoor heat converter or indoor heat converter through electric throttling distributor, thereby make indoor heat converter or heat exchanger give full play to heat exchange action.
Preferably, the step of described detection control circuit system comprises: detect every group of heat exchanger of indoor heat converter or indoor heat converter outlet temperature, the detection signal conversion is sent to digital processing element, digital processing element receives to analyze behind the detection signal and judge and send control signal, control module and receive the control signal of sending from digital signal processing unit and control distribution and the throttling that flow is finished in described electric throttling distributor action.
Optionally, the indoor heat converter that described digital processing element basis receives or the outlet temperature signal of heat exchanger, for outlet temperature higher indoor heat converter or heat exchanger, the ratio of the distribution of the flow of increase throttle orifice corresponding with it.
Optionally, described digital processing element is according to the indoor heat converter that receives or the outlet temperature signal of heat exchanger, for outlet temperature indoor heat converter on the low side or the heat exchanger of indoor heat converter, reduce the ratio of distribution of the flow of throttle orifice corresponding with it.
Optionally, described air-conditioning is convertible frequency air-conditioner, described compressor is frequency-changeable compressor, the control signal that described digital processing element sends also comprises the control signal to described compressor, when higher after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, increase the rotating speed of described frequency-changeable compressor, and outlet temperature higher indoor heat converter or the corresponding throttle orifice of heat exchanger are increased corresponding assignment of traffic ratio; When in a basic balance after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, the rotating speed that keeps described frequency-changeable compressor increases corresponding electric throttling distributor to its supply to outlet temperature higher indoor heat converter or heat exchanger simultaneously; It is on the low side as when being lower than saturated evaporating temperature after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, reduce the rotating speed of described frequency-changeable compressor, regulate corresponding cold-producing medium supply according to the outlet temperature of indoor heat converter or heat exchanger by electric throttling distributor simultaneously.
Optionally, described air-conditioning is convertible frequency air-conditioner, described compressor is frequency-changeable compressor, the control signal that described digital processing element sends also comprises the control signal to described compressor, when higher after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, increase the rotating speed of described frequency-changeable compressor and outlet temperature indoor heat converter or heat exchanger on the low side are reduced corresponding electric throttling distributor to its supply; When in a basic balance after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, the rotating speed that keeps described frequency-changeable compressor reduces corresponding electric throttling distributor to its supply to outlet temperature indoor heat converter or heat exchanger on the low side simultaneously; It is on the low side as when being lower than saturated evaporating temperature after the indoor heat converter outlet temperature is comprehensive, reduce the rotating speed of described frequency-changeable compressor, regulate corresponding cold-producing medium allocation proportion according to the outlet temperature of indoor heat converter or heat exchanger by electric throttling distributor simultaneously.
Preferably, the process of analyzing judgement behind the described digital processing element reception detection signal adopts fuzzy control method.
Preferably, described digital processing element receives and also comprises for the signal of judging the signalization of indoor heat converter.
Preferably, described digital processing element receives and also comprises the detection signal of outdoor heat converter, changes in flow rate signal or above-mentioned two kinds of signals of indoor heat converter for the signal of judging.
The present invention is specially adapted to the above air-conditioning system of indoor heat converter more than 2 or 2 groups of heat exchangers or has the fridge-freezer of the vapo(u)rization system more than 2 to use, similarly throttle orifice also is more than 2, be to be that described throttle orifice is 3 when above more than 3 groups at indoor heat converter or heat exchanger, system effect can be more obvious.
The present invention is by using an electric throttling distributor to reach the detection control circuit system that be used for control system assignment of traffic supporting with this electric throttling distributor in air-conditioning system or refrigeration system, detect and receive the coherent signal of relevant indoor heat converter or heat exchanger, information processing by digital signal processing unit, export corresponding control signal for relevant compressor and electric throttling distributor, thereby realization controls to the flow of the refrigerant of each indoor heat converter or heat exchanger, thereby finish throttling and the distribution of the refrigerant between the heat exchangers such as the assignment of traffic of the assignment of traffic of indoor set of multi-split air conditioner or an air-conditioning system that comprises multi-group heat exchanger and many evaporimeters, and be automatically assigned to the refrigerant flow of every group of indoor heat converter or every group of heat exchanger, make between every indoor heat converter or the every group of heat exchanger assignment of traffic even, make every indoor set or every group of heat exchanger give full play to its heat exchange effect, reduce the waste of heat exchange area, thereby improve the efficient of whole system, the a plurality of expansion valves in the original system have been substituted simultaneously, therefore the pipeline connection can reduce a lot, control when manufacturing cost reduces, it is also convenient that connection is installed.
Description of drawings
Fig. 1: the schematic diagram of a kind of embodiment of air-conditioning system of the present invention;
Fig. 2: the schematic diagram of the second embodiment of air-conditioning system of the present invention;
Fig. 3: the first signal of the detection control circuit system of air-conditioning system of the present invention transmits schematic diagram;
Fig. 4: the second signal of the detection control circuit system of air-conditioning system of the present invention transmits schematic diagram;
Fig. 5: the structural representation of the first embodiment of electric throttling distributor of the present invention;
Fig. 6: the structural representation of the second embodiment of electric throttling distributor of the present invention;
Fig. 7: the partial structurtes schematic diagram of the guiding valve of electric throttling distributor shown in Figure 6 and valve seat location;
Fig. 8: the schematic diagram of the third embodiment of electric throttling distributor of the present invention;
Fig. 9: the partial structurtes schematic diagram at the valve seat of electric throttling distributor shown in Figure 8 and guiding valve position;
Figure 10: the schematic diagram of the 4th kind of embodiment of electric throttling distributor of the present invention;
Figure 11: be the base member of the electric throttling distributor of Figure 10 and the partial structurtes schematic diagram at guiding valve position.
The specific embodiment
Below in conjunction with accompanying drawing, specify embodiments of the present invention, electric throttling distributor of the present invention needing to go for throttling and carries out in the system of assignment of traffic, as family expenses one drag many air-conditionings, a plurality of spaces fridge-freezer, and use the air-conditioning etc. of multi-group heat exchanger, the below describes as an example of air-conditioning example.
Because air-conditioning system is very common, so other conventional element such as the part the same with the prior art of present air-conditioning such as blower fan, magnetic valve etc. and control circuit, control method that some are conventional are no longer introduced here, introduce the difference of the present invention and prior art here.
As shown in Figure 1, Fig. 1 is the schematic diagram of the first embodiment of air-conditioning system of the present invention.Air-conditioning system of the present invention comprises compressor 1, outdoor heat converter 2, indoor heat converter 5, indoor heat converter 5 is by three groups of heat exchangers: First Heat Exchanger 5a, the second heat exchanger 5b, the 3rd heat exchanger 5c are composed in parallel, the benefit that indoor heat converter arranges like this is to give full play to the heat exchanger effectiveness of indoor heat converter, improves the Energy Efficiency Ratio of this air-conditioning system.Simultaneously all be provided with a temperature sensor 501,502,503 at the outlet position of three groups of heat exchangers.
Just because of this, think and between indoor heat converter 5 and outdoor heat converter, also be provided with giving full play to of the heat exchange efficiency that guarantees three groups of heat exchangers an electric throttling distributor 4 and replaced expansion valve and flow distribution device.Electric throttling distributor 4 as shown in Figure 6, Fig. 6 is the structural representation of the first embodiment of electric throttling distributor of the present invention, Fig. 7 is the partial structurtes schematic diagram of electric throttling distributor valve seat shown in Figure 6 and spool member.Electric throttling distributor has an import 701a, three throttle orifice 702a, 702b, 702c, three throttle orifice 702a, 702b, 702c are connected with three discharge conection 703a, 703b, 703c by exit passageway 704a, 704b, 704c respectively, and three throttle orifice 702a, 702b, 702c can arrange the latus rectum of a chamfering (not shown) and three throttle orifice 702a, 702b, 702c less than the latus rectum of three discharge conection 703a, 703b, 703c.Electric throttling distributor 4 also comprises shell 709 and valve seat 705, valve pocket 710 of shell 709 and valve seat 705 common formation, the first half of this valve seat 705 is fixed in the described valve pocket, valve pocket 710 is taken over 701 by import 701a with input and is connected, and this electric throttling distributor is realized the distribution of flow between described a plurality of throttle orifice by actuation mechanism; Described import 701a is arranged on the valve seat 705 and with valve pocket 710 and communicates, and valve seat 705 is being provided with a planar bottom surface 705a near the first half in the valve pocket 710, and described three throttle orifice 702a, 702b, 702c are arranged on the planar bottom surface 705a of valve seat 705.Actuation mechanism in the present embodiment is driven by a stepper motor, comprise shell 710 outer fixing coil components 711 and the action element in the shell, action element in the present embodiment comprises magnetic rotor component 707, under driving, magnetic rotor component can come a drive disk assembly of back rotation, magnetic rotor component and drive disk assembly band movable pulley 706 constantly rotate, when system moves, control module sends corresponding pulse signal to the coil component 711 of electric throttling distributor, thereby coil component is realized break-make between a plurality of phase places by receiving corresponding pulse signal, thereby the magnetic rotor component 707 not stalls in the drive shell are moving, magnetic rotor component drives drive disk assembly 708 again and guiding valve 706 constantly rotates, thereby a plurality of throttle orifice 702a on the control valve seat, 702b, the time scale of 702c and valve pocket 710 conductings, thereby realize described a plurality of throttle orifice 702a, 702b, the distribution of flow between the 702c, cold-producing medium are assigned to respectively every group of heat exchanger after by the throttle orifice of electric throttling distributor again.For guaranteeing the correct position relationship between coil component 711 and the magnetic rotor component 707, also have a location mechanism to be fixed between the two.
The control of this embodiment of the present invention part article is as follows: detection control circuit of the present invention as shown in Figure 3, Fig. 3 is the schematic diagram that a kind of signal of the detection control circuit system of air-conditioning system of the present invention transmits; Detect control circuit comprise detection system, testing result is carried out the signal conversion and be sent to digital signal processing unit detection signal conversion delivery unit, according to the signal that receives carry out comprehensive analysis and judgement and send corresponding control signal digital signal processing unit, receive the control signal that sends out from digital signal processing unit and the control module of electric throttling distributor being implemented concrete control.The detection system of present embodiment is mainly three groups of heat exchanger 5a, 5b, the set temperature sensor 501 in 5c outlet position, 502,503 temperature signal, change by detection signal, delivery unit is converted to data signal with temperature signal and simultaneously indoor set air conditioning condition signal is sent to digital signal processing unit together, digital signal processing unit is judged by the analysis to the information that receives, send control signal to control module, control module will be controlled power supply again and supply with electric throttling distributor, the cold-producing medium that electric throttling distributor will be come from outdoor heat converter is according to the indoor situation of air-conditioning system and arrange and require and the flow of signal that outlet temperature situation that every group of heat exchanger detects is sent after comprehensively judging by digital signal processing unit three throttle orifices above distributing and finish simultaneously throttling, then make be assigned with and throttling after cold-producing medium flow to corresponding heat exchanger.Digital signal processing unit of the present invention adopts fuzzy control method.
The pattern of Digital Signal Processing is specific as follows: digital signal processing unit is according to three groups of heat exchanger 5a that detect indoor heat converter 5,5b, the temperature sensor 501 that the outlet position of 5c is set, 502, the requirement of the operating mode that 503 temperature and air-conditioning are set, the outlet temperature of judging which group in three groups of heat exchangers is higher, when sending corresponding control signal stepper motor rotated according to judged result near the throttle orifice conduction position corresponding with this group heat exchanger the time corresponding velocity of rotation slow down, thereby the flow proportional of the cold-producing medium that flows out by this throttle orifice is increased, thereby improve air-conditioning system to the supply of the flow of this group heat exchanger, the outlet temperature of this group heat exchanger just can reduce like this, can also control in case of necessity the operation of other parts such as blower fan.
Another judgment mode is with top just in time opposite, digital signal processing unit is according to three groups of heat exchanger 5a that detect indoor heat converter 5,5b, the temperature sensor 501 that the outlet position of 5c is set, 502, the requirement of the operating mode that 503 temperature and air-conditioning are set, the outlet temperature of judging which group in three groups of heat exchangers is on the low side, when sending corresponding control signal stepper motor rotated according to judged result near corresponding velocity of rotation quickening of the time throttle orifice conduction position corresponding with this group heat exchanger, thereby the flow proportional of the cold-producing medium that flows out by this throttle orifice is reduced, thereby reduce air-conditioning system to the supply of the flow of this group heat exchanger, the outlet temperature of this group heat exchanger just can rise like this.
Control method article listed above to the control of electric throttling distributor, in fact, digital signal processing unit is according to three groups of heat exchanger 5a that detect indoor heat converter 5,5b, the temperature sensor 501 that the outlet position of 5c is set, 502, the requirement of the operating mode that 503 temperature and air-conditioning are set, can carry out first a comprehensive judgement, whether the flow of judging total cold-producing medium that air-conditioning system is supplied is sufficient, when higher after the indoor heat converter outlet temperature is comprehensive, the supply to the cold-producing medium of whole air-conditioning system can be increased, the rotating speed of compressor can be increased such as convertible frequency air-conditioner; When on the low side after the indoor heat converter outlet temperature is comprehensive, reduce the supply to the cold-producing medium of whole air-conditioning system; Meanwhile, the more higher heat exchanger of outlet temperature is increased corresponding electric throttling distributor and reduce corresponding electric throttling distributor to its allocation proportion to its allocation proportion or to outlet temperature heat exchanger on the low side.
Below in conjunction with Fig. 2 another embodiment of air-conditioning system of the present invention is described, Fig. 2 is the schematic diagram of the second embodiment of air-conditioning system of the present invention.As can be seen from Figure 2, this embodiment and the first embodiment are basic identical, main distinction point is: this air-conditioning system is to drag three frequency-conversion air-conditioning system, employed compressor is frequency-changeable compressor 1, this air-conditioning disposes three indoor heat converters altogether: the first indoor heat converter 5a ', the second indoor heat converter 5b ', the 3rd indoor heat converter 5c ' similarly all are provided with temperature sensor 501 ', 502 ', 503 ' in the exit of these three groups of indoor heat converters; Other side is identical with the first embodiment, just no longer repeats here.
The used electric throttling distributor 4 of this embodiment is identical with above-mentioned embodiment, also no longer repeats.
The control of this embodiment part as shown in Figure 4, Fig. 4 is the schematic diagram that the second signal of the detection control circuit system of air-conditioning system of the present invention transmits.
The detection control circuit of this embodiment comprises detection system, with testing result, signalization is carried out the signal conversion and is sent to the detection signal conversion delivery unit of digital signal processing unit, carry out comprehensive analysis and judgement and send the digital signal processing unit of corresponding control signal according to the feedback signal of the signal that receives and control module, the control signal that reception sends out from digital signal processing unit and to electric throttling distributor, compressor or blower fan etc. are implemented concrete control, simultaneously control information is fed back control module.The detection system of present embodiment is mainly three groups of indoor heat converter 5a ', 5b ', the set temperature sensor 501 ' in 5c ' outlet position, 502 ', the changes in flow rate signal of the operating condition of 503 ' temperature signal and the operating mode of off-premises station and air-conditioning system such as the changes in flow rate of system and indoor heat converter etc., then change by detection signal, delivery unit is changed above-mentioned signal or directly be sent to digital signal processing unit, digital signal processing unit is by the comprehensive analysis and judgement to the information that receives, send control signal to control module, control module is supplied with control information the electric throttling distributor compressor again, in addition can also be for other parts such as fans, compressor increases rotating speed or the rotating speed that slows down according to control signal, and adjustment is assigned to the flow proportional of three throttle orifices to the cold-producing medium that electric throttling distributor will be come from outdoor heat converter according to control signal.Digital signal processing unit of the present invention adopts fuzzy control method.
The pattern of Digital Signal Processing is specific as follows: digital signal processing unit is according to indoor heat converter 5a ', 5b ', the set temperature sensor 501 ' in 5c ' outlet position, 502 ', the requirement of the operating mode that 503 ' temperature and air-conditioning are set, carry out first a comprehensive judgement, whether the flow of judging total cold-producing medium that air-conditioning system is supplied is sufficient, the rotating speed of compressor 1 is fast or partially slow, in the comprehensive indoor heat converter outlet temperature that draws after judging when higher after comprehensive, increase in case of necessity the rotating speed of compressor, increase the supply to the cold-producing medium of whole air-conditioning system; When on the low side after the indoor heat converter outlet temperature is comprehensive, the rotating speed of the compressor that slows down reduces the supply to the cold-producing medium of whole air-conditioning system; Meanwhile, the more higher heat exchanger of outlet temperature is increased corresponding electric throttling distributor and reduce corresponding flow distributing system to its supply to its supply or to the outlet temperature interchanger that changes on the low side.Above same to the assignment of traffic mode of electric throttling distributor, no longer repeat here.
Pass through so the comprehensive judgement of digital processing element, can make the operation of whole air-conditioning system be in a basic perfect condition, in the situation that air-conditioning system is had relatively high expectations, also should be for whole detection, judge, control procedure is carried out closed-loop control and is kept memory, further judge whether original program schema is reasonable, unreasonable such as original program schema, because the variation of external environment causes or because of personal like not under the square one, digital processing element can suitably be adjusted the program schema of original control and regulation, satisfy on the one hand the hobby of actual user to satisfy whole air-conditioning system, whole air-conditioning system is in again an economical operation state simultaneously, and whole air-conditioning system can also reduce the parts such as original expansion valve and distributor, installation is more convenient like this, and control is also relatively simple simultaneously.
Certainly, the control of air-conditioning system is not limited to the above-mentioned parts of introducing, can also controls simultaneously other parts such as other magnetic valve or blower fans.The control mode of digital processing element also is not limited to above-mentioned fuzzy control in addition, also can adopt a kind of mode of accurate control.
In addition, in the air-conditioning system described above, electric throttling distributor is not restricted to the embodiment of Fig. 6 described above, also can adopt other embodiment fully, as long as make the outlet of electric throttling distributor and indoor heat converter or the heat exchanger quantity of air-conditioning system can be corresponding, even can also adopt 2 discharge conections to supply simultaneously an indoor heat converter etc. when being necessary.
The throttle orifice of electric throttling distributor is 3 in the embodiment recited above, and this is not to be confined to 3, just adopts 3 can say something, and can not become again very complicated.Electric throttling distributor can arrange according to the needs of system the quantity of discharge conection and throttle orifice fully, be to drag 5 o'clock such as air-conditioning system, when air-conditioning need to be controlled flow respectively to 5 indoor heat converters, correspondingly the throttle orifice of electric throttling distributor and discharge conection also will keep more than 5 or 5 at least; And air-conditioning system is to drag 4 o'clock, when air-conditioning need to be controlled flow respectively to 4 indoor heat converters, correspondingly the throttle orifice of electric throttling distributor and discharge conection also will keep more than 4 or 4 at least, because we can adopt 2 throttle orifices or indoor heat converter of more orifices controls, this is not a kind of restriction.
In several embodiment recited above, the outdoor heat converter of described air-conditioning system all is one, and this is not limitation of the present invention yet, and outdoor heat converter also can be a plurality of, such as 2 or 3 etc.
The below simply introduces the embodiment of another electric throttling distributor, and Fig. 5 is the structural representation of another embodiment of electric throttling distributor of the present invention; As shown in Figure 5, electric throttling distributor comprises shell 610, the shell 610 outer coil components 608 that are fixed with, actuation mechanism comprises the attractor 607 that the action element in coil component 608 and the shell and the soft magnet material of fixing process in this embodiment, action element in the present embodiment housing comprises the movable part 606 that is processed by soft magnet material of radially reciprocating action, the actuated element 605 that is fixedly connected with on the returning spring that arranges between described movable part 606 and the described attractor and the movable part 606, actuated element 605 also comprises guiding valve 604, the other end sealing of shell 610 is fixed with end cap 610a, end cap 610a and the shell 610 common valve pockets 602 that form, integrally formed when end cap 610a also can be the shell shaping, manufacturing cost can be lower like this; Be fixed with an entrance sleeve 601 on the end cap 610a, valve pocket in the import of entrance sleeve 601 and the shell communicates, also be fixed with a valve seat 603 in the valve pocket in the shell 610, valve seat 603 has a planar bottom surface, be processed with 2 throttle orifice: 603a, 603b in this planar bottom surface, 2 discharge conection 609a, 609b are communicated with two throttle orifices respectively, and the latus rectum of 2 throttle orifice 603a, 603b is less than the latus rectum of 2 discharge conection 609a, 609b; When solenoid parts 608 constantly are switched on or disconnect, described movable part 606 just can always ceaselessly reciprocating action under the elastic force of electromagnetic force and returning spring, thereby thereby simultaneously actuated element 605 with guiding valve 604 make together different the finishing the assignment of traffic between two throttle orifices of ratio of the conducting of 2 throttle orifices when movable part 606 action with movable part 606 reciprocating actions, the flow by two discharge conection 609a, 609b is also reasonably distributed simultaneously.The flow of two discharge conection 609a, 609b depends on the time scale that makes each throttle orifice and valve pocket conducting after the formed flow area of the latus rectum of corresponding two throttle orifices and guiding valve move.
For the flow that makes 2 throttle orifices keeps relative stability, this electric throttling distributor generally can be finished at high speed the open and close action, and the action frequency of general per minute is more than 60 times, even more than 120-240 time.
Simultaneously when electric throttling distributor design, can make guiding valve 604 two throttle orifices of while conducting all when two operating positions, during such as the complete conducting of first segment discharge orifice 603a, second section discharge orifice 603b can conducting 1/3rd or 1/4th or close fully; And such as the complete conducting of second section discharge orifice 603b the time, first segment discharge orifice 603a can conducting 1/3rd or 1/4th or close fully; The resistance of guiding valve meeting less when such benefit is action, the while can reduce the actuating length of movable part, and the electromagnetism consumed power of electric throttling distributor also can correspondingly reduce like this; And at guiding valve 604 during with a complete conducting of throttle orifice, another throttle orifice also can also keep certain flow, so more be conducive to the even running of system, flowed fluctuation is reduced, and the action frequency of electric throttling distributor also can correspondingly reduce, and can also improve like this time in service life of electric throttling distributor.
Air-conditioning system or an indoor heat converter that the electric throttling distributor of this embodiment is suitable for general one drag two are divided into 2 groups air-conditioning system.The control mode of this air-conditioning system can adopt the control mode after the accurate Calculation, at digital signal processing unit by the comprehensive analysis and judgement to the information that receives, draw the correct proportions of two needed flows of heat exchanger of two indoor heat converters of air-conditioning system or an indoor heat converter, send control signal to control module, thereby control module is supplied with control information electric throttling distributor again the flow of 2 throttle orifices by electric throttling distributor can correctly be pro rata distributed.
The below more by reference to the accompanying drawings 8 and Fig. 9 another specific embodiment of electric throttling distributor of the present invention is once described, Fig. 8 is the schematic appearance of this electric throttling distributor, and Fig. 9 is the guiding valve of this embodiment electric throttling distributor and the partial schematic diagram of valve seat location.This embodiment other side is identical with embodiment shown in Figure 6, just the throttle orifice of this embodiment is 6: 702a, 702b, 702c, 702d, 702e, 702f, the discharge conection that correspondingly is connected with throttle orifice also is 6: 703a, 703b, 703c, 703d, 703e, 703f, electric throttling distributor distributes corresponding refrigerant flow in a minute timing according to control signal between 6 throttle orifices.Other part of this invention embodiment is just no longer given unnecessary details here with above-mentioned embodiment.
In addition, in the embodiment of several electric throttling distributors of the present invention, be not limited to and utilize guiding valve that described throttle orifice is closed fully, in fact, when opening a throttle orifice or 2 throttle orifices, keep certain flow to help the stable of system condition and flow the other throttle orifice that is in closed condition, the resistance of the action in the time of also can reducing simultaneously rotation or drive described guiding valve, thus make control more reliable.
Specifically introduce the 4th kind of embodiment of the electric throttling distributor of this invention below in conjunction with Figure 10 and Figure 11, Figure 10 is the structural representation of the 4th kind of embodiment of electric throttling distributor of the present invention; Figure 11 is the partial schematic diagram at the position of the base member of electric throttling distributor shown in Figure 10 and guiding valve.As shown in the figure, in this embodiment, comprise equally a shell 709, also comprise in addition a base 714, base 714 is valve pocket 710 of fixing and common formation with shell 709 welded seals, also is provided with an import 701a and a plurality of outlet through hole on the base 714 and is welded with the entrance sleeve 701 that communicates with import, discharge conection 703a, the 703b, the 703c that communicate with a plurality of outlet through holes; The noise control that also is fixed with in addition a stop pin 715 on the base 714 and is set on the stop pin 715 overlaps 716.On base 714, also be embedded simultaneously and be fixed with a base plate 717, base plate is provided with a smooth flat 717a, match with base 714 in the position of base plate 717, throttle orifice 702a, 702b on the base plate 717,702c are matched with outlet through hole on the base respectively, thereby a plurality of throttle orifice 702a, 702b, the 702c that arrange on the base plate 717 are connected with discharge conection 703a, 703b, 703c respectively, also are provided with the recess 712b that is communicated with described a plurality of throttle orifice 702a, 702b, 702c on the base plate 717 simultaneously.Base plate 717 part embeds base 714 and is fixed together by crimping.In addition, base plate and base are not limited to this mode that directly is fixed together, and can also add a reed in the centre and indirectly be fixed together, and fixed form can also adopt the alternate manners such as riveted joint or spot welding.
Similarly, outside shell 709, be fixed with the solenoid parts 711 as the step motor stator part, 710 of valve pockets in the shell 709 are provided with the magnetic rotor component 707 as stepper motor mover part, dispose a stop rod on the magnetic rotor component 707, with noise control on the stop pin 715 recited above overlap 716 1 when being used from electric throttling distributor and opening the location and the location in the rotation process.In order to guarantee between coil component 711 and shell 709a, have a locator card locking apparatus to be fixed as the solenoid parts 711 of step motor stator part and as the phase place between the magnetic rotor component 707 of stepper motor mover part.With magnetic rotor component 707 is fixed together drive link 708 arranged, drive link 708 is fixed-type together during by the magnet rotor injection mo(u)lding, the bottom of drive link 708 arranges and is fixed with guiding valve 706, be provided with a breach on the guiding valve 706, be used for the location with the fixing driven rod (figure does not mark) of magnetic rotor component 707, when electric throttling distributor moves, the coil component 711 of electric throttling distributor receives the pulse signal that systems control division part is sent, constantly break-make conversion between a plurality of phase places, thereby the magnetic rotor component 707 that drives in the shell 709 does not stop to come back rotation, magnetic rotor component drives drive link 708 again and guiding valve 706 constantly comes back rotation, thereby a plurality of throttle orifice 702a on the control base plate 717,702b, the time scale of 702c and valve pocket 710 conductings, thus realize described a plurality of throttle orifice 702a, 702b, the distribution of flow between the 702c.
During concrete the rotation, when magnetic rotor component 707 forwards stop rod to and noise control cover 716 on the stop pin 715 contacts this position or just no longer rotation when not arriving this position, but transfer counter-rotation to, magnetic rotor component 707 is exactly continuously to carry out reciprocating rotation during specific works like this, pass through each throttle orifice 702a of guiding valve 706 conductings by control, 702b, the corresponding time scale of 702c, just can realize that electric throttling distributor is to each throttle orifice 702a, 702b, the distribution of the flow of 702c, similarly, each throttle orifice 702a, 702b, the flow of 702c just depends on each throttle orifice 702a, 702b, speed when passing through this throttle orifice when the latus rectum of 702c and guiding valve rotate, if the velocity of rotation when guiding valve passes through throttle orifice 702a conducting is slower, then correspondingly the time of the conducting by this throttle orifice 702a is corresponding longer, and is just corresponding higher by the flow proportional of this throttle orifice 702a; Similarly, if the velocity of rotation when guiding valve passes through throttle orifice 702a conducting is very fast, then correspondingly the time of the conducting by this throttle orifice 702a is corresponding shorter, flow proportional by this throttle orifice 702a is just corresponding lower, and at this moment correspondingly the allocation proportion of the discharge conection 703a flow corresponding with throttle orifice 702a is also just lower.
Simultaneously, because the recess 712b that arranges on the base plate 717 is communicated with throttle orifice 702a, 702b, 702c, therefore, in the situation that guiding valve 706 covers throttle orifice such as Figure 11 guiding valve 706 with throttle orifice 702a, when 702b covers, throttle orifice 702a, 702b still can obtain a part of flow from recess 712b.This a part of flow depends on the latus rectum of throttle orifice 702a, 702b, 702c and the flow area of recess 712b, in the fixing situation of the flow area of the latus rectum of throttle orifice 702a, 702b, 702c and recess 712b, the ratio of the flow by throttle orifice 702a, 702b, 702c also remain unchanged.
In this embodiment, described base plate 717 adopts stamping processing, the light face when the recess place face of described base plate adopts punching press, and this side surface fineness of base plate is better like this.Adopt the base plate of punch process to make up the use amount that can reduce material with base, correspondingly, described shell 709 also can be set to two step-like parts, in this embodiment, the upper dimension of shell 709 can reduce, and correspondingly coil component and magnetic rotor component all can reduce, thereby is conducive to realize miniaturization, the power of motor also can be smaller, reduces the use amount of material when reducing power consumption.Other operation principle is all identical with embodiment described above with working method, just no longer repeats here.
In addition, in this embodiment, the recess 712b that arranges on the base plate 717 might not be connected with all throttle orifices, but can only be connected with the part throttle orifice, as being communicated with throttle orifice 702a, 702b, but be not connected with 702c, like this, at guiding valve with throttle orifice 702a, when 702b covers, throttle orifice 702a, 702b still can have the part flow to pass through, and when guiding valve covered throttle orifice 702c, throttle orifice 702c just no longer included flow, other is consistent with mode described above, so just no longer repeat.
In addition, also has a kind of embodiment, then be to make the height of medial surface of base plate a little less than the lateral surface height, make simultaneously throttle orifice be positioned at these two positions that drop is arranged of base plate, throttle orifice respectively has part on these two planes, like this, is connected with throttle orifice thereby have certain interval can ensure certain bare flow between the backplate surface of medial surface and the throttle orifice, this mode is easy to process equally, can form together when punching press.
In addition, the entrance sleeve of described electric throttling distributor is not limited to be connected to the below of described electric throttling distributor, entrance sleeve can also be connected to the peripheral side of shell, also be not limited to and be connected on described valve seat or the base, entrance sleeve can also directly be connected on the shell, and is corresponding proper when more at throttle orifice like this.
In sum, the present invention is by electric throttling distributor of configuration in refrigeration system such as air-conditioning system, thereby can be in cancellation expansion valve and flow distributor implements reasonably assignment of traffic between a plurality of indoor heat converters of realization refrigeration system or the multi-group heat exchanger.The refrigerant flow of system is reasonably distributed, heat exchanger or efficiency of heat exchanger are not fully exerted, can also set according to the statistics of the heat-transfer effect of each heat exchanger or heat exchanger simultaneously the through-current capacity of each throttle orifice, and avoid between much more original group heat exchangers or the heat exchanger mass flow discrepancy wasting problem that weighs, this connection occupation mode is easy simultaneously, connecting line is few, and it is also relatively low that cost is installed and used in manufacturing.
The above only is several embodiment of the present invention; and be not restriction to application of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (16)
1. electric throttling distributor, comprise shell, a valve pocket is arranged in the shell, valve pocket is taken over at least one input and is connected, be provided with a plurality of throttle orifices on this electric throttling distributor, this electric throttling distributor is realized the distribution of flow between described a plurality of throttle orifice by actuation mechanism, described actuation mechanism comprises coil component and the interior action element of shell that described shell is fixed outward, thereby by make the action element action in the shell to described coil component energising, by controlling the time scale of described a plurality of throttle orifice and described valve pocket conducting, thereby realize distribution to flow between described a plurality of throttle orifices; Described electric throttling distributor also includes a plurality of discharge conections, and described throttle orifice is connected with described discharge conection respectively, and the latus rectum of described throttle orifice is less than the latus rectum of described discharge conection; Described actuation mechanism is a stepper motor; Described stepper motor comprises the outer fixing coil component of described shell and the magnetic rotor component in the shell, described magnetic rotor component also is fixed with a drive disk assembly, described magnetic rotor component, drive disk assembly drive a guiding valve and constantly rotate, thereby realize the distribution to flow between described a plurality of throttle orifices.
2. air-conditioning system, comprise compressor, at least one group of outdoor heat converter, many group indoor heat converters or multi-group heat exchanger, it is characterized in that described air-conditioning system also comprises the claims 1 described electric throttling distributor, each throttle orifice of described electric throttling distributor respectively with many groups indoor heat converter or multi-group heat exchanger wherein one group be connected.
3. air-conditioning system as claimed in claim 2, it is characterized in that described air-conditioning system also comprises with described electric throttling distributor detects the control circuit system accordingly, described detection control circuit system is mainly the detection control circuit system that the corresponding discharge between the described throttle orifice distributes, it comprises digital signal processing unit, to the detection signal delivery unit of described digital signal processing unit input signal, receive the control module from the digital signal processing unit output signal.
4. air-conditioning system as claimed in claim 3 is characterized in that described detection signal to described digital signal processing unit input signal comprises the outlet temperature signal of indoor heat converter.
5. air-conditioning system as claimed in claim 3 is characterized in that described reception mainly receives control signal to assignment of traffic from the control module of digital signal processing unit output signal, and controls corresponding electric throttling distributor action.
6. air-conditioning system as claimed in claim 3, it is characterized in that described compressor is frequency-changeable compressor, described reception mainly receives control signal to compressor, electric throttling distributor from the control module of digital signal processing unit output signal, and controls simultaneously rotating speed and the electric throttling distributor action of compressor.
7. such as claim 3 ~ 6 each described air-conditioning system wherein, it is characterized in that the processing mode of described digital signal processing unit adopts fuzzy control method.
8. the flow control methods of an air-conditioning system, air-conditioning system comprises compressor, at least one group of outdoor heat converter, many group indoor heat converters or multi-group heat exchanger, it is characterized in that air-conditioning system also comprises electric throttling distributor as claimed in claim 1 and carries out the detection control circuit system that flow system flow distributes for electric throttling distributor, each throttle orifice of described electric throttling distributor respectively with many groups indoor heat converter or multi-group heat exchanger wherein one group be connected; Air-conditioning system is according to the situation of indoor heat converter or heat exchanger, judge by the analysis that detects the control circuit system, export the described electric throttling distributor of corresponding signal controlling, make cold-producing medium carry out after the distribution of flow and the throttling heat exchanger to indoor heat converter or indoor heat converter through electric throttling distributor, thereby make indoor heat converter or heat exchanger give full play to heat exchange action.
9. flow control methods as claimed in claim 8 is characterized in that the step of described detection control circuit system comprises: detect every group of heat exchanger of indoor heat converter or indoor heat converter outlet temperature, the detection signal conversion is sent to digital processing element, digital processing element receives to analyze behind the detection signal and judge and send control signal, control module and receive the control signal of sending from digital signal processing unit and control distribution and the throttling that flow is finished in described electric throttling distributor action.
10. flow control methods as claimed in claim 9, it is characterized in that described digital processing element is according to the indoor heat converter that receives or the outlet temperature signal of heat exchanger, for outlet temperature higher indoor heat converter or heat exchanger, the ratio of the distribution of the flow of increase throttle orifice corresponding with it.
11. flow control methods as claimed in claim 9, it is characterized in that described digital processing element is according to the indoor heat converter that receives or the outlet temperature signal of heat exchanger, for outlet temperature indoor heat converter or heat exchanger on the low side, the ratio of the distribution of the flow of minimizing throttle orifice corresponding with it.
12. flow control methods as claimed in claim 8, it is characterized in that described air-conditioning is convertible frequency air-conditioner, described compressor is frequency-changeable compressor, the control signal that described digital processing element sends also comprises the control signal to described compressor, when higher after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, increase the rotating speed of described frequency-changeable compressor, and outlet temperature higher indoor heat converter or the corresponding throttle orifice of heat exchanger are increased corresponding assignment of traffic ratio; When in a basic balance after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, the rotating speed that keeps described frequency-changeable compressor increases corresponding electric throttling distributor to its supply to outlet temperature higher indoor heat converter or heat exchanger simultaneously; It is on the low side as when being lower than saturated evaporating temperature after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, reduce the rotating speed of described frequency-changeable compressor, regulate corresponding cold-producing medium supply according to the outlet temperature of indoor heat converter or heat exchanger by electric throttling distributor simultaneously.
13. flow control methods as claimed in claim 8, it is characterized in that described air-conditioning is convertible frequency air-conditioner, described compressor is frequency-changeable compressor, the control signal that described digital processing element sends also comprises the control signal to described compressor, when higher after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, increase the rotating speed of described frequency-changeable compressor and outlet temperature indoor heat converter or heat exchanger on the low side are reduced corresponding electric throttling distributor to its supply; When in a basic balance after every group of heat exchanger outlet temperature of indoor heat converter or indoor heat converter is comprehensive, the rotating speed that keeps described frequency-changeable compressor reduces corresponding electric throttling distributor to its supply to outlet temperature indoor heat converter or heat exchanger on the low side simultaneously; It is on the low side as when being lower than saturated evaporating temperature after the indoor heat converter outlet temperature is comprehensive, reduce the rotating speed of described frequency-changeable compressor, regulate corresponding cold-producing medium allocation proportion according to the outlet temperature of indoor heat converter or heat exchanger by electric throttling distributor simultaneously.
14. such as claim 9 ~ 13 each described flow control methods wherein, it is characterized in that described digital processing element receives the process of analyzing judgement behind the detection signal and adopts fuzzy control method.
15. flow control methods as claimed in claim 14 is characterized in that described digital processing element receives and also comprise for the signal of judging the signalization of indoor heat converter.
16. flow control methods as claimed in claim 14 is characterized in that described digital processing element reception and the signal that is used for judging also comprise the detection signal of outdoor heat converter, changes in flow rate signal or above-mentioned two kinds of signals of indoor heat converter.
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| DE102011004109A1 (en) * | 2011-02-15 | 2012-08-16 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic refrigerator with an expansion valve |
| CN103075540A (en) * | 2013-01-04 | 2013-05-01 | 宁波爱姆优东海精工电器有限公司 | Cool air output flow-rate adjusting structure of electric switching valve |
| CN111140912B (en) * | 2020-01-19 | 2024-01-16 | 珠海格力电器股份有限公司 | Multi-split system and control method thereof |
| CN113639437A (en) * | 2021-08-09 | 2021-11-12 | 青岛海尔空调器有限总公司 | Air conditioner control method and device, electronic equipment, storage medium and air conditioner |
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Address after: 312500 Shaoxing City, Zhejiang province Xinchang Qixing street under the Liquan Patentee after: Zhejiang three flower intelligent control Limited by Share Ltd Address before: 312500 Liquan village of Zhejiang County in Xinchang Province town under Patentee before: Zhejiang Sanhua Group Co., Ltd. |