CN103912958A - Air conditioning system control method, air conditioning system control device and air conditioning system - Google Patents
Air conditioning system control method, air conditioning system control device and air conditioning system Download PDFInfo
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- CN103912958A CN103912958A CN201410143362.6A CN201410143362A CN103912958A CN 103912958 A CN103912958 A CN 103912958A CN 201410143362 A CN201410143362 A CN 201410143362A CN 103912958 A CN103912958 A CN 103912958A
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Abstract
The invention discloses an air conditioning system control method. An air conditioning system comprises N indoor units in one-to-to correspondence with electronic expansion valves, wherein N refers to an integer larger than 1. The control method includes the steps: detecting an outdoor environment temperature; when the air conditioning system meets a preset defrosting condition, controlling the air conditioning to access to a defrosting mode, and determining the number of the electronic expansion valves needing to be started from the N electronic expansion valves according to the outdoor environment temperature; controlling corresponding electronic expansion valves of the N electronic expansion valves to be started according to the number of the electronic expansion valves needing to be started. Using the control method can improve degree of superheat of refrigerant in a compressor shell of the air conditioning system during defrosting and guarantee that the refrigerant is less prone to dissolution in refrigeration oil of a compressor, and accordingly thinning of oil films due to attenuation of the refrigeration oil can be avoided, and lubrication requirements of the compressor can be guaranteed. The invention further discloses an air conditioning system control device and the air conditioning system.
Description
Technical field
The present invention relates to air conditioner controlling technology field, particularly the control device of a kind of control method of air-conditioning system, a kind of air-conditioning system and a kind of air-conditioning system with this control device.
Background technology
Conventionally the choke valve (electric expansion valve) of multi-split air conditioner all indoor sets in the time of defrosting all can leave to maximum, makes like this defrosting speed very fast.But, can make the interior refrigerant degree of superheat of compressor housing lower simultaneously, thereby make refrigerant be condensed into liquid state and be dissolved in refrigerator oil, cause oil film thickness attenuation and cannot guarantee compressor lubrication requirement, especially along with air-conditioning system efficiency requires more and more higher, evaporimeter in air-conditioning system and the volume of condenser are increasing, and coolant injection amount is also increasing, and refrigerator oil is more easily diluted.
Therefore, need to improve for the control technology of multi-split air conditioner of this bad working environments of defrosting.
Summary of the invention
Object of the present invention is intended at least solve above-mentioned technological deficiency.
For this reason, first object of the present invention is to propose a kind of interior refrigerant degree of superheat of compressor housing that can improve to guarantee the control method of the air-conditioning system that in compressor, refrigerator oil is not diluted by refrigerant.
Second object of the present invention is to propose a kind of control device of air-conditioning system.The 3rd object of the present invention is to propose a kind of air-conditioning system.
For achieving the above object, first aspect present invention embodiment has proposed a kind of control method of air-conditioning system, wherein, described air-conditioning system comprises N indoor set, the corresponding electric expansion valve of each described indoor set, N is greater than 1 integer, and described control method comprises the following steps: environment temperature outside sensing chamber; In the time that described air-conditioning system meets default defrosting condition, control described air-conditioning system and enter defrosting mode, and determine according to described outside environment temperature the quantity that needs the electric expansion valve of opening in N electric expansion valve; And open according to corresponding electric expansion valve in N electric expansion valve described in the described quantity control that needs the electric expansion valve of opening.
According to the control method of the air-conditioning system of the embodiment of the present invention, by environment temperature outside sensing chamber, and in the time that entering defrosting mode, air-conditioning system determines according to outside environment temperature the quantity that needs the electric expansion valve of opening in N electric expansion valve, and in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened, can improve thus air-conditioning system refrigerant degree of superheat in when defrosting compressor housing, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, guarantee air-conditioning system stable operation.In addition, this control method is simple and reliable.
According to one embodiment of present invention, also comprise: the opening value of each electric expansion valve in the electric expansion valve of opening according to the described needs of described outside environment temperature acquisition, the electric expansion valve of corresponding unlatching in a described N electric expansion valve is carried out to regulation according to the opening value of each electric expansion valve in the described electric expansion valve that needs to open.
Preferably, according to one embodiment of present invention, the opening value of each electric expansion valve in the described electric expansion valve that needs to open is adjusted to maximum.
According to one embodiment of present invention, determine the quantity that needs the electric expansion valve of opening in N electric expansion valve according to described outside environment temperature, specifically comprise: in the time that described outside environment temperature is more than or equal to the 1st preset temperature, determine that the described quantity that needs the electric expansion valve of opening is N; In the time that described outside environment temperature is more than or equal to m preset temperature and is less than described m-1 preset temperature, determine that the described quantity that needs the electric expansion valve of opening is N-m+1, wherein, described m preset temperature is less than described m-1 preset temperature, m=2,3,4 ..., N; In the time that described outside environment temperature is less than N preset temperature, determine that the described quantity that needs the electric expansion valve of opening is 1.
Particularly, according to one embodiment of present invention, in the time of N=5, described the 1st preset temperature is 2 ℃, and the 2nd preset temperature is 0 ℃, and the 3rd preset temperature is-2 ℃, and the 4th preset temperature is-5 ℃, and the 5th preset temperature is-7 ℃.
For achieving the above object, the control device of a kind of air-conditioning system that second aspect present invention embodiment proposes, comprising: temperature detecting module, and described temperature detecting module is for detection of outside environment temperature; And control module, described control module is controlled described air-conditioning system and is entered defrosting mode in the time that described air-conditioning system meets default defrosting condition, and determine the quantity that needs the electric expansion valve of opening in N electric expansion valve of described air-conditioning system according to described outside environment temperature, and open according to corresponding electric expansion valve in N electric expansion valve described in the described quantity control that needs the electric expansion valve of opening, wherein, described air-conditioning system comprises N indoor set, the corresponding electric expansion valve of each described indoor set, N is greater than 1 integer.
According to the control device of the air-conditioning system of the embodiment of the present invention, by environment temperature outside temperature detecting module sensing chamber, and control module is determined the quantity that needs the electric expansion valve of opening in N electric expansion valve according to outside environment temperature in the time that air-conditioning system enters defrosting mode, and in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened, can improve thus air-conditioning system refrigerant degree of superheat in when defrosting compressor housing, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, guarantee air-conditioning system stable operation.
According to one embodiment of present invention, described control module is also for obtain the described opening value that needs the each electric expansion valve of electric expansion valve of opening according to described outside environment temperature, the electric expansion valve of corresponding unlatching in a described N electric expansion valve is carried out to regulation according to the opening value of each electric expansion valve in the described electric expansion valve that needs to open.
Preferably, according to one embodiment of present invention, described control module is also for being adjusted to maximum by the described opening value that needs the each electric expansion valve of electric expansion valve of opening.
According to one embodiment of present invention, in the time that described outside environment temperature is more than or equal to the 1st preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is N; In the time that described outside environment temperature is more than or equal to m preset temperature and is less than described m-1 preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is N-m+1, wherein, described m preset temperature is less than described m-1 preset temperature, m=2,3,4 ..., N; In the time that described outside environment temperature is less than N preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is 1.
Particularly, according to one embodiment of present invention, in the time of N=5, described the 1st preset temperature is 2 ℃, and the 2nd preset temperature is 0 ℃, and the 3rd preset temperature is-2 ℃, and the 4th preset temperature is-5 ℃, and the 5th preset temperature is-7 ℃.
In addition, embodiments of the invention have also proposed a kind of air-conditioning system, and it comprises the control device of above-mentioned air-conditioning system.
The air-conditioning system of the embodiment of the present invention can improve the refrigerant degree of superheat in compressor housing in the time of defrosting, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, can stable operation.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is according to the flow chart of the control method of the air-conditioning system of the embodiment of the present invention; And
Fig. 2 is according to the block diagram of the control device of the air-conditioning system of the embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique the invention provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Describe with reference to the accompanying drawings according to the flow chart of the control method of the air-conditioning system of the embodiment of the present invention.Wherein, air-conditioning system can be multi-split air conditioner, and this multi-split air conditioner comprises 1 off-premises station and N indoor set, the corresponding electric expansion valve of each indoor set, and N is greater than 1 integer.As shown in Figure 1, the control method of this air-conditioning system comprises the following steps:
S1, environment temperature outside sensing chamber.Wherein, can be by environment temperature T 4 outside outdoor temperature sensor sensing chamber.
S2, in the time that air-conditioning system meets default defrosting condition, controls air-conditioning system and enters defrosting mode, and determine according to outside environment temperature the quantity that needs the electric expansion valve of opening in N electric expansion valve.Wherein, reach predetermined threshold value and lasting Preset Time when the temperature of the fin of off-premises station in air-conditioning system is less than outside environment temperature, can judge that air-conditioning system meets default defrosting condition, the predetermined threshold value here and Preset Time can be demarcated in advance.
S3, in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened.
According to one embodiment of present invention, the control method of above-mentioned air-conditioning system also comprises: the opening value of each electric expansion valve in the electric expansion valve of opening according to outside environment temperature T4 acquisition needs, carries out regulation with the opening value of each electric expansion valve in the electric expansion valve of opening as required to the electric expansion valve of corresponding unlatching in N electric expansion valve.
Wherein, in the electric expansion valve that needs can be opened, the opening value of each electric expansion valve is adjusted to maximum and is made as maximum opening value.Certainly, be understandable that, also in the electric expansion valve that can as requested needs be opened, the opening value of each electric expansion valve is made as other opening values, and in the electric expansion valve that needs to open, the opening value of each electric expansion valve can be made as difference, the control accuracy that can greatly improve like this electric expansion valve, makes the control of electric expansion valve more meticulous.
According to one embodiment of present invention, in step S2, determine in N electric expansion valve and need the quantity of the electric expansion valve of opening specifically to comprise according to outside environment temperature: in the time that outside environment temperature is more than or equal to the 1st preset temperature, determine that needing the quantity of the electric expansion valve of opening is N; In the time that outside environment temperature is more than or equal to m preset temperature and is less than m-1 preset temperature, determine that needing the quantity of the electric expansion valve of opening is N-m+1, wherein, m preset temperature is less than m-1 preset temperature, m=2,3,4 ..., N; In the time that outside environment temperature is less than N preset temperature, determine that needing the quantity of the electric expansion valve of opening is 1.Wherein, the 1st preset temperature, the 2nd preset temperature ..., N preset temperature value can determine according to the concrete debugging of air-conditioning system.
Particularly, according to an example of the present invention, in the time of N=5, the 1st preset temperature can be 2 ℃, and the 2nd preset temperature can be 0 ℃, and the 3rd preset temperature can be-2 ℃, and the 4th preset temperature can be-5 ℃, and the 5th preset temperature can be-7 ℃.
That is to say, in this example, when air-conditioning system start and while moving with heating mode, environment temperature T 4 outside sensing chamber.When air-conditioning system meets while entering defrosting condition, the compressor in air-conditioning system, outer blower fan, inner blower be by normal defrosting mode operation, and electric expansion valve corresponding at least one indoor set open, and the regulation of the electric expansion valve of unlatching is to maximum.Wherein, normal defrosting mode refers to that the compressor in air-conditioning system, outer blower fan, inner blower are still according to the control strategy operation of current routine, the control method that is the air-conditioning system of the embodiment of the present invention is, under the bad working environments while defrosting for air-conditioning system, electric expansion valve corresponding to each indoor set adopted to above-mentioned control strategy, and the compressor in air-conditioning system, outer blower fan, inner blower control are carried out to corresponding control by existing scheme.
Then, judge the opening of the electric expansion valve that each indoor set is corresponding according to environment temperature T 4 outside defrosting cup.Particularly, when outside environment temperature T4 is more than or equal to the 1st preset temperature, when 2 ℃≤T4, determine that needing the quantity of the electric expansion valve of opening is N, electric expansion valve corresponding to all 5 indoor sets all will be opened, and its aperture is adjustable to maximum; When outside environment temperature T4 is less than the 1st preset temperature and is more than or equal to the 2nd preset temperature, when 2 ℃ of 0 ℃≤T4 <, determine that needing the quantity of the electric expansion valve of opening is 4, close 1 electric expansion valve that indoor set is corresponding, remaining other 4 electric expansion valves corresponding to indoor set need to open, and the regulation of the electric expansion valve of opening is extremely maximum; When outside environment temperature T4 is less than the 2nd preset temperature and is more than or equal to the 3rd preset temperature, when 0 ℃ of-2 ℃≤T4 <, determine that needing the quantity of the electric expansion valve of opening is 3, close 2 electric expansion valves that indoor set is corresponding, remaining other 3 electric expansion valves corresponding to indoor set need to open, and the regulation of the electric expansion valve of opening is extremely maximum; When outside environment temperature T4 is less than the 3rd preset temperature and is more than or equal to the 4th preset temperature, when the-5 ℃≤T4 <-2 ℃, determine that needing the quantity of the electric expansion valve of opening is 2, close 3 electric expansion valves that indoor set is corresponding, remaining other 2 electric expansion valves corresponding to indoor set need to open, and the regulation of the electric expansion valve of opening is extremely maximum; When outside environment temperature T4 is less than the 4th preset temperature and is more than or equal to the 5th preset temperature, when the-7 ℃≤T4 <-5 ℃, determine that needing the quantity of the electric expansion valve of opening is 1, close 4 electric expansion valves that indoor set is corresponding, remaining other 1 electric expansion valve corresponding to indoor set needs to open, and the regulation of the electric expansion valve of opening is extremely maximum; When outside environment temperature T4 is less than the 5th preset temperature, while being T4 <-7 ℃, determine that needing the quantity of the electric expansion valve of opening is 1, close 4 electric expansion valves that indoor set is corresponding, remaining other 1 electric expansion valve corresponding to indoor set needs to open, and the regulation of the electric expansion valve of opening is extremely maximum.
Be understandable that, in other embodiments of the invention, when outside environment temperature T4 is less than the 1st preset temperature and is more than or equal to the 2nd preset temperature, when 2 ℃ of 0 ℃≤T4 <, determine and need the quantity of the electric expansion valve of opening also can be 3, close 2 electric expansion valves that indoor set is corresponding, remaining other 3 electric expansion valves corresponding to indoor set need to open, and the regulation of the electric expansion valve of opening is extremely maximum, by that analogy, just repeat no longer one by one here.
Finally, after air-conditioning system defrosting finishes, electric expansion valve corresponding to compressor, inner blower, outer blower fan and each indoor set in air-conditioning system all moves by the normal heating mode of air-conditioning system, and continues environment temperature T 4 outside sensing chamber.
It should be noted that, in an embodiment of the present invention, in the time that air-conditioning system enters defrosting mode, at least need to open 1 electric expansion valve that indoor set is corresponding, and can be by the regulation of the electric expansion valve of opening to maximum.
The control method of the air-conditioning system of the embodiment of the present invention, by judge the opening of the electric expansion valve that each indoor set is corresponding according to outside environment temperature T4, can improve air-conditioning system refrigerant degree of superheat in when defrosting compressor housing.Particularly, as shown in table 1 below, one drags three air-conditioning systems (i.e. an off-premises station and three indoor sets) to carry out the control method of the air-conditioning system of the embodiment of the present invention in when defrosting, and result one can improve the refrigerant degree of superheat of compressor bottom in dragging three air-conditioning system defrost process greatly at this.
Table 1
Therefore, according to the control method of the air-conditioning system of the embodiment of the present invention, by environment temperature outside sensing chamber, and in the time that entering defrosting mode, air-conditioning system determines according to outside environment temperature the quantity that needs the electric expansion valve of opening in N electric expansion valve, and in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened, can improve thus air-conditioning system refrigerant degree of superheat in when defrosting compressor housing, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, guarantee air-conditioning system stable operation.In addition, this control method is simple and reliable.
Fig. 2 is according to the block diagram of the control device of the air-conditioning system of the embodiment of the present invention.As shown in Figure 2, the control device of this air-conditioning system comprises: temperature detecting module 10 and control module 20.
Wherein, temperature detecting module 10 is for detection of outside environment temperature T4, control module 20 is controlled air-conditioning system and is entered defrosting mode in the time that air-conditioning system meets default defrosting condition, and determine the quantity that needs the electric expansion valve of opening in N electric expansion valve of air-conditioning system according to outside environment temperature, and in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened, wherein, air-conditioning system comprises N indoor set, the corresponding electric expansion valve of each indoor set, N is greater than 1 integer.
According to one embodiment of present invention, control module 20 also, for obtain the opening value that needs the each electric expansion valve of electric expansion valve of opening according to outside environment temperature T4, is carried out regulation with the opening value of each electric expansion valve in the electric expansion valve of opening as required to the electric expansion valve of corresponding unlatching in N electric expansion valve.
Wherein, in the electric expansion valve that control module 20 can be opened needs, the opening value of each electric expansion valve is adjusted to maximum and is made as maximum opening value.Certainly, be understandable that, in the electric expansion valve that control module 20 also can be opened needs as requested, the opening value of each electric expansion valve is made as other opening values, and in the electric expansion valve that needs to open, the opening value of each electric expansion valve can be made as difference, the control accuracy that can greatly improve like this electric expansion valve, makes the control of electric expansion valve more meticulous.
According to one embodiment of present invention, in the time that outside environment temperature is more than or equal to the 1st preset temperature, control module 20 determines that needing the quantity of the electric expansion valve of opening is N; In the time that outside environment temperature is more than or equal to m preset temperature and is less than m-1 preset temperature, control module 20 determines that needing the quantity of the electric expansion valve of opening is N-m+1, and wherein, m preset temperature is less than m-1 preset temperature, m=2,3,4 ..., N; In the time that outside environment temperature is less than N preset temperature, control module 20 determines that needing the quantity of the electric expansion valve of opening is 1.Wherein, the 1st preset temperature, the 2nd preset temperature ..., N preset temperature value can determine according to the concrete debugging of air-conditioning system.
Particularly, according to an example of the present invention, in the time of N=5, the 1st preset temperature can be 2 ℃, and the 2nd preset temperature can be 0 ℃, and the 3rd preset temperature can be-2 ℃, and the 4th preset temperature can be-5 ℃, and the 5th preset temperature can be-7 ℃.
It should be noted that, in an embodiment of the present invention, in the time that air-conditioning system enters defrosting mode, at least need to open 1 electric expansion valve that indoor set is corresponding, and can be by the regulation of the electric expansion valve of opening to maximum.
According to the control device of the air-conditioning system of the embodiment of the present invention, by environment temperature outside temperature detecting module sensing chamber, and control module is determined the quantity that needs the electric expansion valve of opening in N electric expansion valve according to outside environment temperature in the time that air-conditioning system enters defrosting mode, and in N electric expansion valve of quantity control of the electric expansion valve of opening as required, corresponding electric expansion valve is opened, can improve thus air-conditioning system refrigerant degree of superheat in when defrosting compressor housing, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, guarantee air-conditioning system stable operation.
In addition, embodiments of the invention have also proposed a kind of air-conditioning system, and it comprises the control device of above-mentioned air-conditioning system.
The air-conditioning system of the embodiment of the present invention can improve the refrigerant degree of superheat in compressor housing in the time of defrosting, guarantee that refrigerant is not easy to be dissolved in the refrigerator oil of compressor, thereby can dilution refrigeration machine oil and cause oil film attenuation, guarantee the lubricating requirement of compressor, can stable operation.
Any process of otherwise describing in flow chart or at this or method are described and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The logic and/or the step that in flow chart, represent or otherwise describe at this, for example, can be considered to the sequencing list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as computer based system, comprise that the system of processor or other can and carry out the system of instruction from instruction execution system, device or equipment instruction fetch), or use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can comprise, device that storage, communication, propagation or transmission procedure use for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only storage (ROM), the erasable read-only storage (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out to optical scanner, then edit, decipher or process in electronics mode and obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with being stored in software or the firmware carried out in memory and by suitable instruction execution system.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic for data-signal being realized to the logic gates of logic function, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be read-only storage, disk or CD etc.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (11)
1. a control method for air-conditioning system, is characterized in that, described air-conditioning system comprises N indoor set, the corresponding electric expansion valve of each described indoor set, and N is greater than 1 integer, and described control method comprises the following steps:
Environment temperature outside sensing chamber;
In the time that described air-conditioning system meets default defrosting condition, control described air-conditioning system and enter defrosting mode, and determine according to described outside environment temperature the quantity that needs the electric expansion valve of opening in N electric expansion valve; And
Open according to corresponding electric expansion valve in N electric expansion valve described in the described quantity control that needs the electric expansion valve of opening.
2. the control method of air-conditioning system as claimed in claim 1, is characterized in that, also comprises:
Obtain the opening value of each electric expansion valve in the described electric expansion valve that needs to open according to described outside environment temperature, the electric expansion valve of corresponding unlatching in a described N electric expansion valve is carried out to regulation according to the opening value of each electric expansion valve in the described electric expansion valve that needs to open.
3. the control method of air-conditioning system as claimed in claim 1 or 2, is characterized in that, determines specifically comprise the quantity that needs the electric expansion valve of opening in N electric expansion valve according to described outside environment temperature:
In the time that described outside environment temperature is more than or equal to the 1st preset temperature, determine that the described quantity that needs the electric expansion valve of opening is N;
In the time that described outside environment temperature is more than or equal to m preset temperature and is less than described m-1 preset temperature, determine that the described quantity that needs the electric expansion valve of opening is N-m+1, wherein, described m preset temperature is less than described m-1 preset temperature, m=2,3,4 ..., N;
In the time that described outside environment temperature is less than N preset temperature, determine that the described quantity that needs the electric expansion valve of opening is 1.
4. the control method of air-conditioning system as claimed in claim 3, is characterized in that, in the time of N=5, described the 1st preset temperature is 2 ℃, and the 2nd preset temperature is 0 ℃, and the 3rd preset temperature is-2 ℃, and the 4th preset temperature is-5 ℃, and the 5th preset temperature is-7 ℃.
5. the control method of air-conditioning system as claimed in claim 2, is characterized in that, the opening value of each electric expansion valve in the described electric expansion valve that needs to open is adjusted to maximum.
6. a control device for air-conditioning system, is characterized in that, comprising:
Temperature detecting module, described temperature detecting module is for detection of outside environment temperature; And
Control module, described control module is controlled described air-conditioning system and is entered defrosting mode in the time that described air-conditioning system meets default defrosting condition, and determine the quantity that needs the electric expansion valve of opening in N electric expansion valve of described air-conditioning system according to described outside environment temperature, and open according to corresponding electric expansion valve in N electric expansion valve described in the described quantity control that needs the electric expansion valve of opening, wherein, described air-conditioning system comprises N indoor set, the corresponding electric expansion valve of each described indoor set, N is greater than 1 integer.
7. the control device of air-conditioning system as claimed in claim 6, it is characterized in that, described control module is also for obtain the described opening value that needs the each electric expansion valve of electric expansion valve of opening according to described outside environment temperature, the electric expansion valve of corresponding unlatching in a described N electric expansion valve is carried out to regulation according to the opening value of each electric expansion valve in the described electric expansion valve that needs to open.
8. the control device of the air-conditioning system as described in claim 6 or 7, is characterized in that,
In the time that described outside environment temperature is more than or equal to the 1st preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is N;
In the time that described outside environment temperature is more than or equal to m preset temperature and is less than described m-1 preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is N-m+1, wherein, described m preset temperature is less than described m-1 preset temperature, m=2,3,4 ..., N;
In the time that described outside environment temperature is less than N preset temperature, described control module determines that the described quantity that needs the electric expansion valve of opening is 1.
9. the control device of air-conditioning system as claimed in claim 8, is characterized in that, in the time of N=5, described the 1st preset temperature is 2 ℃, and the 2nd preset temperature is 0 ℃, and the 3rd preset temperature is-2 ℃, and the 4th preset temperature is-5 ℃, and the 5th preset temperature is-7 ℃.
10. the control device of air-conditioning system as claimed in claim 7, is characterized in that, described control module is also for being adjusted to maximum by the described opening value that needs the each electric expansion valve of electric expansion valve of opening.
11. 1 kinds of air-conditioning systems, is characterized in that, comprise the control device of the air-conditioning system as described in any one in claim 6-10.
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