CN104566859A - Anti-freezing control method and device of air conditioning unit - Google Patents
Anti-freezing control method and device of air conditioning unit Download PDFInfo
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- CN104566859A CN104566859A CN201410823206.4A CN201410823206A CN104566859A CN 104566859 A CN104566859 A CN 104566859A CN 201410823206 A CN201410823206 A CN 201410823206A CN 104566859 A CN104566859 A CN 104566859A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses an anti-freezing control method and device of an air conditioning unit. The anti-freezing control method of the air conditioning unit comprises the following steps: detecting whether the air conditioning unit meets an anti-freezing start-up condition in a state when the air conditioning unit is shut down and an automatic anti-freezing function is started up; if detection shows that the anti-freezing start-up condition is met by the air conditioning unit, acquiring accumulative operation time of a plurality of compressors respectively; determining the compressor with the shortest accumulative operation time; controlling the compressor with the shortest accumulative operation time to start and entering anti-freezing protection. Through the method and the device, an effect of avoiding reduction in service life of the compressor due to anti-freezing protection is achieved.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of antifreeze control method and device of air-conditioner set.
Background technology
At present, air-conditioner set all has antifreeze function usually, for the protection of air-conditioner set to avoid the freezing air-conditioner set when temperature is very low.
But inventor finds, for multi-compressor or multisystem air conditioner unit, in the case of power-off, if meet antifreeze condition, then multi-compressor or multisystem are opened antifreeze simultaneously, water temperature rises fast so antifreeze process terminates very soon, and namely compressor cuts out after opening very soon.This kind of antifreeze control mode causes the high frequent start and stop of system on the one hand; The running time that increase compressor is total on the other hand, too fast consumption compressor, shortens the service life of compressor, reduces its reliability.
For in prior art because anti-frost protection reduces the problem in service life of compressor, at present effective solution is not yet proposed.
Summary of the invention
Main purpose of the present invention is the antifreeze control method and the device that provide a kind of air-conditioner set, to solve the problem in the service life of reducing compressor in prior art due to anti-frost protection.
To achieve these goals, according to an aspect of the embodiment of the present invention, a kind of antifreeze control method of air-conditioner set is provided.Antifreeze control method according to air-conditioner set of the present invention comprises: under the state that described air-conditioner set is in shutdown and automatic freezing-protective function is opened, detect described air-conditioner set and whether meet antifreeze unlocking condition; If detect it is that described air-conditioner set meets antifreeze unlocking condition, then obtain the accumulated running time of described multiple compressor respectively; Determine the compressor that accumulated running time is minimum; And control minimum compressor start enter anti-frost protection of described accumulated running time.
Further, controlling minimum compressor start after entering anti-frost protection, described antifreeze control method also comprises of described accumulated running time: detect the minimum running status of compressor in anti-frost protection process of described accumulated running time; Minimum compressor of described accumulated running time whether disorderly closedown is judged according to described running status; And if judge that described accumulated running time minimum compressor fault is shut down, then control the compressor that in described multiple compressor, accumulated running time is minimum except described accumulated running time minimum compressor and enter anti-frost protection.
Further, detecting it is that after described air-conditioner set meets antifreeze unlocking condition, described antifreeze control method also comprises: detect described multiple compressor whether fault respectively; If detect that described multiple compressor is all normal, then obtain the accumulated running time of described multiple compressor respectively; If detect that described multiple compressor exists fault, then obtain the accumulated running time of normal compressor in described multiple compressor respectively, wherein, determine that accumulated running time minimum compressor comprises: determine the compressor that in described multiple compressor, accumulated running time is minimum; Or, determine the compressor that accumulated running time in described normal compressor is minimum.
Further, described multiple compressor comprises the first compressor and the second compressor, wherein, determines that accumulated running time minimum compressor comprises: the accumulated running time of more described first compressor and the accumulated running time of described second compressor; Control minimum compressor start enter anti-frost protection and comprise of described accumulated running time: if the accumulated running time of described first compressor is less than the accumulated running time of described second compressor, then controls described first compressor start and enter anti-frost protection; If the accumulated running time of described first compressor is greater than the accumulated running time of described second compressor, then controls described second compressor start and enter anti-frost protection.
Further, described first compressor belongs to the first coolant circulating system, described second compressor belongs to the second coolant circulating system, wherein, detecting it is that after described air-conditioner set meets antifreeze unlocking condition, described antifreeze control method also comprises: detect described first coolant circulating system and described second coolant circulating system whether fault respectively; If detect that described first coolant circulating system and described second coolant circulating system are all normal, then obtain the accumulated running time of described first compressor and the accumulated running time of described second compressor respectively; If detect described first coolant circulating system fault, then control described second coolant circulating system and enter anti-frost protection, start described second compressor; If detect described second coolant circulating system fault, then control described first coolant circulating system and enter anti-frost protection, start described first compressor.
To achieve these goals, according to the another aspect of the embodiment of the present invention, provide a kind of freezing protection control device of air-conditioner set.Freezing protection control device according to air-conditioner set of the present invention comprises: the first detecting unit, for being in shutdown at described air-conditioner set and under the state of automatic freezing-protective function unlatching, detecting described air-conditioner set and whether meet antifreeze unlocking condition; First acquiring unit, if be that described air-conditioner set meets antifreeze unlocking condition for detecting, then obtains the accumulated running time of described multiple compressor respectively; Determining unit, for determining the compressor that accumulated running time is minimum; And first control unit, for controlling minimum compressor start enter anti-frost protection of described accumulated running time.
Further, described freezing protection control device also comprises: the second detecting unit, for controlling minimum compressor start after entering anti-frost protection of described accumulated running time, detect the minimum running status of compressor in anti-frost protection process of described accumulated running time; Judging unit, for judging minimum compressor of described accumulated running time whether disorderly closedown according to described running status; And second control unit; if for judging that described accumulated running time minimum compressor fault is shut down, then control the compressor that in described multiple compressor, accumulated running time is minimum except described accumulated running time minimum compressor and enter anti-frost protection.
Further, described freezing protection control device also comprises: the 3rd detecting unit, for detecting it is after described air-conditioner set meets antifreeze unlocking condition, detects described multiple compressor whether fault respectively; Second acquisition unit, if for detecting that described multiple compressor is all normal, then obtain the accumulated running time of described multiple compressor respectively; If detect that described multiple compressor exists fault, then obtain the accumulated running time of normal compressor in described multiple compressor respectively, wherein, described determining unit comprises: the first determination module, for the compressor determining that in described multiple compressor, accumulated running time is minimum, or, determine the compressor that accumulated running time in described normal compressor is minimum.
Further, described multiple compressor comprises the first compressor and the second compressor, and wherein, described determining unit comprises: the second determination module, for the accumulated running time of more described first compressor and the accumulated running time of described second compressor; Described first control unit comprises: control module, if be less than the accumulated running time of described second compressor for accumulated running time of described first compressor, then control described first compressor start and enters anti-frost protection; If the accumulated running time of described first compressor is greater than the accumulated running time of described second compressor, then controls described second compressor start and enter anti-frost protection.
Further, described first compressor belongs to the first coolant circulating system, described second compressor belongs to the second coolant circulating system, wherein, described freezing protection control device also comprises: the 4th detecting unit, for detecting it is after described air-conditioner set meets antifreeze unlocking condition, detect described first coolant circulating system and described second coolant circulating system whether fault respectively; 3rd acquiring unit, if for detecting that described first coolant circulating system and described second coolant circulating system are all normal, then obtain the accumulated running time of described first compressor and the accumulated running time of described second compressor respectively; 3rd control unit, if for detecting described first coolant circulating system fault, then control described second coolant circulating system and enter anti-frost protection, start described second compressor; If detect described second coolant circulating system fault, then control described first coolant circulating system and enter anti-frost protection, start described first compressor.
According to the embodiment of the present invention, air-conditioner set when off-mode detect meet antifreeze condition, control compressor start that in multiple compressor, accumulated running time is minimum and enter anti-frost protection, other compressors then continue to keep closed condition, like this, all start without the need to each compressor and enter anti-frost protection, thus keep compressor operating time balanced, avoid because anti-frost protection makes longly cause reduce the service life of this compressor the running time of wherein certain compressor, solve the problem in the service life of reducing compressor in prior art due to anti-frost protection, reach the effect avoided due to anti-frost protection reduction compressor service life.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the antifreeze control method of air-conditioner set according to the embodiment of the present invention;
Fig. 2 is the flow chart according to the preferred antifreeze control method of the embodiment of the present invention; And
Fig. 3 is the schematic diagram of the freezing protection control device of air-conditioner set according to the embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that embodiments of the invention described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiments provide a kind of antifreeze control method of air-conditioner set.Wherein, air-conditioner set comprises multiple compressor, and this unit can be the unit of the multiple compressor of single system, also can be the unit of the multiple compressor of multisystem, such as dual system unit.Multiple compressors in air-conditioner set, after each run terminates, add up the accumulated running time of each compressor.The antifreeze control method of the present embodiment is mainly used in air-conditioner set anti-frost protection in the power-offstate.
Fig. 1 is the flow chart of the antifreeze control method of air-conditioner set according to the embodiment of the present invention.As shown in Figure 1, to comprise step as follows for the antifreeze control method of this air-conditioner set:
Step S102, under the state that air-conditioner set is in shutdown and automatic freezing-protective function is opened, detects air-conditioner set and whether meets antifreeze unlocking condition.
Step S104, if detect it is that air-conditioner set meets antifreeze unlocking condition, then obtains the accumulated running time of multiple compressor respectively.
Step S106, determines the compressor that accumulated running time is minimum.
Step S108, the compressor start that control accumulated running time is minimum also enters anti-frost protection.
Under air-conditioner set is in off-mode, detect whether meet antifreeze condition, if met, then open anti-frost protection.Particularly; first obtain the accumulated running time added up in advance of multiple compressor respectively; the accumulated running time of multiple compressor is compared respectively; determine the compressor that accumulated running time is minimum; control this compressor start to run; and entering the duty of anti-frost protection, other compressors then continue to keep closed condition.Wherein, if accumulated running time minimum compressor have multiple, then can Stochastic choice wherein any one compressor, control it and start, and enter anti-frost protection.
According to the embodiment of the present invention, air-conditioner set when off-mode detect meet antifreeze condition, control compressor start that in multiple compressor, accumulated running time is minimum and enter anti-frost protection, other compressors then continue to keep closed condition, like this, all start without the need to each compressor and enter anti-frost protection, thus keep compressor operating time balanced, avoid because anti-frost protection makes longly cause reduce the service life of this compressor the running time of wherein certain compressor, solve the problem in the service life of reducing compressor in prior art due to anti-frost protection, reach the effect avoided due to anti-frost protection reduction compressor service life.
In addition, in the embodiment of the present invention, the compressor minimum due to control accumulated running time enters anti-frost protection, starts without the need to multiple compressor simultaneously, avoids causing compressor fault because high frequent starts.
Preferably, controlling accumulated running time minimum compressor start after entering anti-frost protection, antifreeze control method comprises: detect the accumulated running time minimum running status of compressor in anti-frost protection process; Accumulated running time minimum compressor whether disorderly closedown is judged according to running status; And if judge that accumulated running time minimum compressor fault is shut down, then control the compressor that in multiple compressor, accumulated running time is minimum except accumulated running time minimum compressor and enter anti-frost protection.
Controlling accumulated running time minimum compressor start after entering anti-frost protection; condition monitoring is carried out to the compressor in anti-frost protection process; and judge whether it breaks down; if there is disorderly closedown; and anti-frost protection people remains unfulfilled; from the multiple compressors got, then determine the compressor that accumulated running time except the compressor of above-mentioned fault is minimum, and control this compressor start and run, enter anti-frost protection.If do not broken down, then proceed to detect, until anti-frost protection terminates.
It should be noted that, if except the compressor of disorderly closedown, to only have a compressor, then this compressor is also thought then directly to control its startup optimization by the compressor that accumulated running time except the compressor of above-mentioned fault is minimum.
In the embodiment of the present invention; after control compressor start runs; its running status is detected; when it breaks down; control the compressor start that in other compressors, accumulated running time is minimum run and carry out anti-frost protection; both ensure that the normal anti-frost protection of air-conditioner set, the equilibrium assignment of compressor operating time can have been ensured again.
Preferably, detecting it is that after air-conditioner set meets antifreeze unlocking condition, antifreeze control method comprises: detect multiple compressor whether fault respectively; If detect that multiple compressor is all normal, then obtain the accumulated running time of multiple compressor; If detect that multiple compressor exists fault, then obtain the accumulated running time of normal compressor in multiple compressor, wherein, determine that accumulated running time minimum compressor comprises: determine the compressor that in multiple compressor, accumulated running time is minimum; Or, determine the compressor that accumulated running time in normal compressor is minimum.
After detecting that air-conditioner set meets anti-frost protection unlocking condition, first can detect the state of multiple compressor, judge whether compressor exists fault, if do not have out of order compressor, obtain the accumulated running time of compressor respectively; Otherwise, then the accumulated running time of the compressor outside the compressor obtaining fault.Then from the accumulated running time obtained, the compressor that accumulated running time is minimum is determined.
It should be noted that, if air-conditioner set is the unit of multisystem multi-compressor, wherein, the corresponding compressor of each system, then can detection system state, and principle is same as described above, does not repeat here.
According to the embodiment of the present invention, by first carrying out fault detect to compressor, avoiding the follow-up compressor selecting startup to be the compressor of fault, ensureing normally carrying out of anti-frost protection.
In the embodiment of the present invention, multiple compressor comprises the first compressor and the second compressor, wherein, determines that accumulated running time minimum compressor comprises: compare the accumulated running time of the first compressor and the accumulated running time of the second compressor; Control accumulated running time minimum compressor start enter anti-frost protection and comprise: if the accumulated running time of the first compressor is less than the accumulated running time of the second compressor, then controls the first compressor start and enter anti-frost protection; If the accumulated running time of the first compressor is greater than the accumulated running time of the second compressor, then controls the second compressor start and enter anti-frost protection.
For dual system unit, wherein, first compressor belongs to the first system, second compressor belongs to second system, determine in the embodiment of the present invention that accumulated running time minimum compressor can be compared the accumulated running time of the accumulated running time of the first compressor and the second compressor, if the accumulated running time of the first compressor is few, then control the first compressor start, the second compressor keeps cutting out; Otherwise then control the second compressor start, the first compressor keeps cutting out.
Below for dual system unit, composition graphs 2 pairs of embodiment of the present invention are described.Wherein, air-conditioner set comprises the first coolant circulating system and the second coolant circulating system, and wherein, the first compressor belongs to the first coolant circulating system, and the second compressor belongs to the second coolant circulating system.
As shown in Figure 2, to comprise step as follows for this antifreeze control method:
Step S202, display board shuts down.Under off-mode, automatic freezing-protective function is opened by display board, and unit has automatic freezing-protective operation function.
Whether step S204, detect automatic freezing-protective function and open.If opened, then perform step S206, otherwise, then continue to detect.
Step S206, detects whether meet antifreeze condition.If meet antifreeze condition, then perform step S208, otherwise, then continue to detect.
Step S208, two systems whether all fault-free.
Particularly, detecting it is after air-conditioner set meets antifreeze unlocking condition, detect the first coolant circulating system and the second coolant circulating system whether fault respectively; If detect that the first coolant circulating system and the second coolant circulating system are all normal, then perform step S210; If detect the first coolant circulating system fault, then perform step S212; If detect the second coolant circulating system fault, then perform step S214.
Step S210, obtains compressor accumulated running time, and judges whether the running time of the first compressor is less than the running time of the second compressor.Particularly, obtain the accumulated running time of the first compressor and the accumulated running time of the second compressor, accumulated running time is compared, if the accumulated running time of the first compressor is less than the accumulated running time of the second compressor, then perform step S220, otherwise, then perform step S216.
Step S212, determines the first system fault.
Step S214, determines second system fault.
Step S216, when determining the first system fault, the second compressor operating is antifreeze.Namely control the second coolant circulating system and enter anti-frost protection, start the second compressor.
Whether step S218, meet antifreeze exit criteria.If so, then step S202 is returned, otherwise, then continue to perform step S216.
Step S220, when determining the first system fault, the first compressor operating is antifreeze.Namely control the first coolant circulating system and enter anti-frost protection, start the first compressor.
Whether step S222, meet antifreeze exit criteria.If so, then step S202 is returned, otherwise, then continue to perform step S220.
Particularly, in the embodiment of the present invention, if meet antifreeze unlocking condition, then judge whether unit has fault, this time-division four kinds of situations:
(1) if two equal fault-free of system, the relatively accumulated running time of two system compressors, if compressor accumulated running time the first system < second system, then the unlatching of the first system compressor enters antifreeze, and second system compressor keeps closed condition; If compressor accumulated running time the first system > second system, then the unlatching of second system compressor enters antifreeze, and the first system compressor keeps closed condition.Thus the control method of two compressor alternate runs when realizing antifreeze.
(2) if the first system has fault, second system fault-free, then second system press is opened antifreeze.
(3) if the first system fault-free, second system has fault, then the first system press is opened antifreeze.
(4) if two systems all have fault, then unit cannot be opened antifreeze, wait for fault clearance.
Wherein, if if antifreeze operation time reach antifreeze exit criteria, then unit exits antifreeze.The shutdown if certain system is just breaking down in the process of antifreeze operation, does not now meet antifreeze exit criteria, then another one system open immediately enter antifreeze.
The embodiment of the present invention additionally provides a kind of freezing protection control device of air-conditioner set.It should be noted that, the freezing protection control device of the air-conditioner set of the embodiment of the present invention may be used for the antifreeze control method performing the air-conditioner set that the embodiment of the present invention provides, and the freezing protection control device of the air-conditioner set that the antifreeze control method of the air-conditioner set of the embodiment of the present invention also can be provided by the embodiment of the present invention performs.
Fig. 3 is the schematic diagram of the freezing protection control device of air-conditioner set according to the embodiment of the present invention.As shown in Figure 3, the freezing protection control device of this air-conditioner set comprises: the first detecting unit 10, first acquiring unit 20, determining unit 30 and the first control unit 40.
First detecting unit 10 is for being in shutdown and under the state of automatic freezing-protective function unlatching, detecting air-conditioner set and whether meet antifreeze unlocking condition at air-conditioner set.
If the first acquiring unit 20 is that air-conditioner set meets antifreeze unlocking condition for detecting, then obtain the accumulated running time of multiple compressor respectively.
Determining unit 30 is for determining the compressor that accumulated running time is minimum.
First control unit 40 is for controlling accumulated running time minimum compressor start enter anti-frost protection.
Under air-conditioner set is in off-mode, detect whether meet antifreeze condition, if met, then open anti-frost protection.Particularly; first obtain the accumulated running time added up in advance of multiple compressor respectively; the accumulated running time of multiple compressor is compared respectively; determine the compressor that accumulated running time is minimum; control this compressor start to run; and entering the duty of anti-frost protection, other compressors then continue to keep closed condition.Wherein, if accumulated running time minimum compressor have multiple, then can Stochastic choice wherein any one compressor, control it and start, and enter anti-frost protection.
According to the embodiment of the present invention, air-conditioner set when off-mode detect meet antifreeze condition, control compressor start that in multiple compressor, accumulated running time is minimum and enter anti-frost protection, other compressors then continue to keep closed condition, like this, all start without the need to each compressor and enter anti-frost protection, thus keep compressor operating time balanced, avoid because anti-frost protection makes longly cause reduce the service life of this compressor the running time of wherein certain compressor, solve the problem in the service life of reducing compressor in prior art due to anti-frost protection, reach the effect avoided due to anti-frost protection reduction compressor service life.
In addition, in the embodiment of the present invention, the compressor minimum due to control accumulated running time enters anti-frost protection, starts without the need to multiple compressor simultaneously, avoids causing compressor fault because high frequent starts.
Preferably, freezing protection control device also comprises: the second detecting unit, for controlling accumulated running time minimum compressor start after entering anti-frost protection, detects the accumulated running time minimum running status of compressor in anti-frost protection process; Judging unit, for judging accumulated running time minimum compressor whether disorderly closedown according to running status; And second control unit, if for judging that accumulated running time minimum compressor fault is shut down, then control the compressor that in multiple compressor, accumulated running time is minimum except accumulated running time minimum compressor and enter anti-frost protection.
Controlling accumulated running time minimum compressor start after entering anti-frost protection; condition monitoring is carried out to the compressor in anti-frost protection process; and judge whether it breaks down; if there is disorderly closedown; and anti-frost protection people remains unfulfilled; from the multiple compressors got, then determine the compressor that accumulated running time except the compressor of above-mentioned fault is minimum, and control this compressor start and run, enter anti-frost protection.If do not broken down, then proceed to detect, until anti-frost protection terminates.
It should be noted that, if except the compressor of disorderly closedown, to only have a compressor, then this compressor is also thought then directly to control its startup optimization by the compressor that accumulated running time except the compressor of above-mentioned fault is minimum.
In the embodiment of the present invention; after control compressor start runs; its running status is detected; when it breaks down; control the compressor start that in other compressors, accumulated running time is minimum run and carry out anti-frost protection; both ensure that the normal anti-frost protection of air-conditioner set, the equilibrium assignment of compressor operating time can have been ensured again.
Preferably, freezing protection control device also comprises: the 3rd detecting unit, for detecting it is after air-conditioner set meets antifreeze unlocking condition, detects multiple compressor whether fault respectively; Second acquisition unit, if for detecting that multiple compressor is all normal, then obtain the accumulated running time of multiple compressor respectively; If detect that multiple compressor exists fault, then obtain the accumulated running time of normal compressor in multiple compressor respectively, wherein, determining unit comprises: the first determination module, for the compressor determining that in multiple compressor, accumulated running time is minimum, or, determine the compressor that accumulated running time in normal compressor is minimum.
After detecting that air-conditioner set meets anti-frost protection unlocking condition, first can detect the state of multiple compressor, judge whether compressor exists fault, if do not have out of order compressor, obtain the accumulated running time of compressor respectively; Otherwise, then the accumulated running time of the compressor outside the compressor obtaining fault.Then from the accumulated running time obtained, the compressor that accumulated running time is minimum is determined.
It should be noted that, if air-conditioner set is the unit of multisystem multi-compressor, wherein, the corresponding compressor of each system, then can detection system state, and principle is same as described above, does not repeat here.
According to the embodiment of the present invention, by first carrying out fault detect to compressor, avoiding the follow-up compressor selecting startup to be the compressor of fault, ensureing normally carrying out of anti-frost protection.
Preferably, multiple compressor comprises the first compressor and the second compressor, and wherein, determining unit comprises: the second determination module, for the accumulated running time of accumulated running time and the second compressor of comparing the first compressor; First control unit comprises: control module, if be less than the accumulated running time of the second compressor for accumulated running time of the first compressor, then control the first compressor start and enters anti-frost protection; If the accumulated running time of the first compressor is greater than the accumulated running time of the second compressor, then controls the second compressor start and enter anti-frost protection.
For dual system unit, wherein, first compressor belongs to the first system, second compressor belongs to second system, determine in the embodiment of the present invention that accumulated running time minimum compressor can be compared the accumulated running time of the accumulated running time of the first compressor and the second compressor, if the accumulated running time of the first compressor is few, then control the first compressor start, the second compressor keeps cutting out; Otherwise then control the second compressor start, the first compressor keeps cutting out.
Preferably, first compressor belongs to the first coolant circulating system, second compressor belongs to the second coolant circulating system, wherein, freezing protection control device also comprises: the 4th detecting unit, for detecting it is after air-conditioner set meets antifreeze unlocking condition, detect the first coolant circulating system and the second coolant circulating system whether fault respectively; 3rd acquiring unit, if for detecting that the first coolant circulating system and the second coolant circulating system are all normal, then obtain the accumulated running time of the first compressor and the accumulated running time of the second compressor respectively; 3rd control unit, if for detecting the first coolant circulating system fault, then control the second coolant circulating system and enter anti-frost protection, start the second compressor; If detect the second coolant circulating system fault, then control the first coolant circulating system and enter anti-frost protection, start the first compressor.
Particularly, in the embodiment of the present invention, if meet antifreeze unlocking condition, then judge whether unit has fault, this time-division four kinds of situations:
(1) if two equal fault-free of system, the relatively accumulated running time of two system compressors, if compressor accumulated running time the first system < second system, then the unlatching of the first system compressor enters antifreeze, and second system compressor keeps closed condition; If compressor accumulated running time the first system > second system, then the unlatching of second system compressor enters antifreeze, and the first system compressor keeps closed condition.Thus the control method of two compressor alternate runs when realizing antifreeze.
(2) if the first system has fault, second system fault-free, then second system press is opened antifreeze.
(3) if the first system fault-free, second system has fault, then the first system press is opened antifreeze.
(4) if two systems all have fault, then unit cannot be opened antifreeze, wait for fault clearance.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in description all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed device, the mode by other realizes.Such as, device embodiment described above is only schematic, the such as division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of device or unit or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, mobile terminal, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an antifreeze control method for air-conditioner set, is characterized in that, described air-conditioner set comprises multiple compressor, and wherein, described antifreeze control method comprises:
Under the state that described air-conditioner set is in shutdown and automatic freezing-protective function is opened, detect described air-conditioner set and whether meet antifreeze unlocking condition;
If detect it is that described air-conditioner set meets antifreeze unlocking condition, then obtain the accumulated running time of described multiple compressor respectively;
Determine the compressor that accumulated running time is minimum; And
Control minimum compressor start enter anti-frost protection of described accumulated running time.
2. antifreeze control method according to claim 1, is characterized in that, controlling minimum compressor start after entering anti-frost protection, described antifreeze control method also comprises of described accumulated running time:
Detect the minimum running status of compressor in anti-frost protection process of described accumulated running time;
Minimum compressor of described accumulated running time whether disorderly closedown is judged according to described running status; And
If judge that described accumulated running time minimum compressor fault is shut down, then control the compressor that in described multiple compressor, accumulated running time is minimum except described accumulated running time minimum compressor and enter anti-frost protection.
3. antifreeze control method according to claim 1, is characterized in that, detecting it is that after described air-conditioner set meets antifreeze unlocking condition, described antifreeze control method also comprises:
Detect described multiple compressor whether fault respectively;
If detect that described multiple compressor is all normal, then obtain the accumulated running time of described multiple compressor respectively;
If detect that described multiple compressor exists fault, then obtain the accumulated running time of normal compressor in described multiple compressor respectively,
Wherein, determine that accumulated running time minimum compressor comprises: determine the compressor that in described multiple compressor, accumulated running time is minimum; Or, determine the compressor that accumulated running time in described normal compressor is minimum.
4. antifreeze control method according to claim 1, is characterized in that, described multiple compressor comprises the first compressor and the second compressor, wherein,
Determine that accumulated running time minimum compressor comprises: the accumulated running time of more described first compressor and the accumulated running time of described second compressor;
Control minimum compressor start enter anti-frost protection and comprise of described accumulated running time: if the accumulated running time of described first compressor is less than the accumulated running time of described second compressor, then controls described first compressor start and enter anti-frost protection; If the accumulated running time of described first compressor is greater than the accumulated running time of described second compressor, then controls described second compressor start and enter anti-frost protection.
5. antifreeze control method according to claim 4, it is characterized in that, described first compressor belongs to the first coolant circulating system, described second compressor belongs to the second coolant circulating system, wherein, detecting it is that after described air-conditioner set meets antifreeze unlocking condition, described antifreeze control method also comprises:
Detect described first coolant circulating system and described second coolant circulating system whether fault respectively;
If detect that described first coolant circulating system and described second coolant circulating system are all normal, then obtain the accumulated running time of described first compressor and the accumulated running time of described second compressor respectively;
If detect described first coolant circulating system fault, then control described second coolant circulating system and enter anti-frost protection, start described second compressor;
If detect described second coolant circulating system fault, then control described first coolant circulating system and enter anti-frost protection, start described first compressor.
6. a freezing protection control device for air-conditioner set, is characterized in that, described air-conditioner set comprises multiple compressor, and wherein, described freezing protection control device comprises:
First detecting unit, for being in shutdown and under the state of automatic freezing-protective function unlatching, detecting described air-conditioner set and whether meet antifreeze unlocking condition at described air-conditioner set;
First acquiring unit, if be that described air-conditioner set meets antifreeze unlocking condition for detecting, then obtains the accumulated running time of described multiple compressor respectively;
Determining unit, for determining the compressor that accumulated running time is minimum; And
First control unit, for controlling minimum compressor start enter anti-frost protection of described accumulated running time.
7. freezing protection control device according to claim 6, is characterized in that, described freezing protection control device also comprises:
Second detecting unit, for controlling minimum compressor start after entering anti-frost protection of described accumulated running time, detects the minimum running status of compressor in anti-frost protection process of described accumulated running time;
Judging unit, for judging minimum compressor of described accumulated running time whether disorderly closedown according to described running status; And
Second control unit, if for judging that described accumulated running time minimum compressor fault is shut down, then controls the compressor that in described multiple compressor, accumulated running time is minimum except described accumulated running time minimum compressor and enters anti-frost protection.
8. freezing protection control device according to claim 6, is characterized in that, described freezing protection control device also comprises:
3rd detecting unit, for detecting it is after described air-conditioner set meets antifreeze unlocking condition, detects described multiple compressor whether fault respectively;
Second acquisition unit, if for detecting that described multiple compressor is all normal, then obtain the accumulated running time of described multiple compressor respectively; If detect that described multiple compressor exists fault, then obtain the accumulated running time of normal compressor in described multiple compressor respectively,
Wherein, described determining unit comprises: the first determination module, for the compressor determining that in described multiple compressor, accumulated running time is minimum, or, determine the compressor that accumulated running time in described normal compressor is minimum.
9. freezing protection control device according to claim 6, is characterized in that, described multiple compressor comprises the first compressor and the second compressor, wherein,
Described determining unit comprises: the second determination module, for the accumulated running time of more described first compressor and the accumulated running time of described second compressor;
Described first control unit comprises: control module, if be less than the accumulated running time of described second compressor for accumulated running time of described first compressor, then control described first compressor start and enters anti-frost protection; If the accumulated running time of described first compressor is greater than the accumulated running time of described second compressor, then controls described second compressor start and enter anti-frost protection.
10. freezing protection control device according to claim 9, is characterized in that, described first compressor belongs to the first coolant circulating system, and described second compressor belongs to the second coolant circulating system, and wherein, described freezing protection control device also comprises:
4th detecting unit, for detecting it is after described air-conditioner set meets antifreeze unlocking condition, detects described first coolant circulating system and described second coolant circulating system whether fault respectively;
3rd acquiring unit, if for detecting that described first coolant circulating system and described second coolant circulating system are all normal, then obtain the accumulated running time of described first compressor and the accumulated running time of described second compressor respectively;
3rd control unit, if for detecting described first coolant circulating system fault, then control described second coolant circulating system and enter anti-frost protection, start described second compressor; If detect described second coolant circulating system fault, then control described first coolant circulating system and enter anti-frost protection, start described first compressor.
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