CN105157290B - Air conditioner and its defrosting control method - Google Patents
Air conditioner and its defrosting control method Download PDFInfo
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- CN105157290B CN105157290B CN201410226350.XA CN201410226350A CN105157290B CN 105157290 B CN105157290 B CN 105157290B CN 201410226350 A CN201410226350 A CN 201410226350A CN 105157290 B CN105157290 B CN 105157290B
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Abstract
The present invention proposes a kind of air conditioner and its defrosting control method, wherein, air conditioner defrosting control method comprises the following steps：S1, when receiving shutdown control signal, detects the outlet temperature and outdoor environment temperature of the outdoor heat converter of air conditioner；S2, whether air conditioner is run with heating mode when judgement receives shutdown control signal；S3, if air conditioner is run with heating mode, judges whether the outlet temperature of outdoor heat converter meets frosting condition；S4, if the outlet temperature of outdoor heat converter meets frosting condition, judges whether outdoor environment temperature is less than or equal to default environment temperature；S5, if outdoor environment temperature is less than or equal to default environment temperature, control air conditioner is defrosted.The air conditioner and its defrosting control method of the present invention, the judgement to the frosting situation on outdoor heat converter surface is more accurate, and control is more intelligent, and considers the temperature control air conditioner defrosting of outdoor environment, can avoid unnecessary waste of energy.
Description
Technical field
The present invention relates to electrical equipment manufacturing technology field, more particularly to a kind of air conditioner and its defrosting control method.
Background technology
With air conditioner use it is more prevalent, user to air conditioner require more and more higher.Traditional air conditioner is with system
When heat pattern is run, when receiving shutdown command, if the frosting of the surface of outdoor heat converter, in outdoor environment temperature
Under conditions of degree is relatively low, the frosting on outdoor heat converter surface can not automatically be melted by the heat of external environment, or even can
Can in high humility, have wind in the case of build-up ice.Thus when lower secondary control air conditioner is run with heating mode, because outdoor
Heat exchanger has frosting and hinders heat exchange, while can also aggravate the frosting velocity of outdoor heat converter, causes heating capacity to reduce
And air conditioner is in anti-cold wind state for a long time.
The scheme having in correlation technique solves above mentioned problem to a certain extent, such as before air conditioner shutdown, control
Air conditioner processed carries out defrosting operation, still, is generally also defrosted in the case where outdoor heat converter surface is without frost.Separately
Outside, sometimes, even if there is frosting on outdoor heat converter surface, but outdoor environment temperature is higher to be greater than judging temperature,
By the heat of outdoor environment temperature frosting can be made to melt automatically, still carry out pressure defrosting, cause unnecessary electricity
It can waste.
The content of the invention
The purpose of the present invention is intended at least solve above-mentioned technical problem to a certain extent.
Therefore, it is an object of the present invention to propose a kind of air conditioner defrosting control method, air conditioner defrosting control
Judgement of the method to the frosting situation on outdoor heat converter surface is more accurate, and control is more intelligent, and considers outdoor ring
The temperature control air conditioner defrosting in border, can avoid unnecessary waste of energy.
It is another object of the present invention to propose a kind of air conditioner.
To reach above-mentioned purpose, an aspect of of the present present invention embodiment proposes a kind of air conditioner defrosting control method, the defrosting
Control method comprises the following steps：S1, when receiving shutdown control signal, detects the outlet of the outdoor heat converter of air conditioner
Temperature and outdoor environment temperature；S2, whether the air conditioner is run with heating mode when judgement receives shutdown control signal；
S3, if the air conditioner is run with heating mode, determines whether whether the outlet temperature of the outdoor heat converter is full
Sufficient frosting condition；S4, if the outlet temperature of the outdoor heat converter meets frosting condition, determines whether the outdoor
Whether environment temperature is less than or equal to default environment temperature；S5, if the outdoor environment temperature is less than or equal to the default environment
Temperature, then control the air conditioner to be defrosted.
Air conditioner defrosting control method according to embodiments of the present invention, is shut down in air conditioner with heating mode end of run
When, by judging the outlet temperature of outdoor heat converter and the relation of frosting condition, and consider outdoor environment temperature, control
Air conditioner is defrosted, and the frosting situation to the outdoor heat converter of air conditioner judges more accurate, is generally not in frostless
Defrost and there is the problem of frost can't check, also, by considering outdoor environment temperature, in outdoor heat converter frosting, but can lead to
When crossing environment temperature and melting, no longer air conditioner is controlled to be defrosted, control is more intelligent, can avoid unnecessary electric energy
Waste.
Further, in some embodiments of the invention, judging to receive shutdown control signal foregoing description air-conditioning
Device also includes after being run with heating mode：Judge whether the air conditioner has carried out Defrost operation；If the air conditioner
Defrost operation has been carried out, then has controlled the air conditioner to shut down after defrosting is completed；If the air conditioner is not defrosted
Operation, then judge whether the run time of the air conditioner is more than or equal to preset time；If the run time of the air conditioner
More than or equal to the preset time, then step S3 is performed.
Wherein, in some embodiments of the invention, judge whether the outlet temperature of the outdoor heat converter meets knot
Ice-lolly part is specifically included；Judge whether the outlet temperature of the outdoor heat converter meets the first frosting condition；If the room
The outlet temperature of outer heat-exchanger meets the first frosting condition, then performs step S4；If the outlet of the outdoor heat converter
Temperature is unsatisfactory for the first frosting condition, then determines whether whether the outlet temperature of the outdoor heat converter meets the second frosting
Condition；If the outlet temperature of the outdoor heat converter meets the second frosting condition, step S4 is performed.
Specifically, in some embodiments of the invention, first frosting condition is met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, TA
The minimum value of the outlet temperature of outdoor heat converter in preset time period is run with heating mode for the air conditioner, TC is first
Preset temperature is poor.
Specifically, in some embodiments of the invention, second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, institute
The second preset temperature is stated less than first preset temperature, TA is that the air conditioner runs preset time period interior room with heating mode
The minimum value of the outlet temperature of outer heat-exchanger, TE is that the second preset temperature is poor, and second preset temperature difference is less than described the
One preset temperature is poor.
Further, in some embodiments of the invention, above-mentioned air conditioner defrosting control method also includes working as the room
When the outlet temperature of outer heat-exchanger is unsatisfactory for the second frosting condition, the outlet temperature of the outdoor heat converter is determined whether
Whether threeth frosting condition is met；If the outlet temperature of the outdoor heat converter meets the 3rd frosting condition, step is performed
Rapid S4；If the outlet temperature of the outdoor heat converter is unsatisfactory for the 3rd frosting condition, the air conditioner is controlled to shut down.
Specifically, in some embodiments of the invention, the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, institute
The 3rd preset temperature is stated less than second preset temperature.
To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of air conditioner, and the air conditioner includes temperature
Detector, when receiving shutdown control signal, the outlet of the outdoor heat converter of the temperature detecting module detection air conditioner
Temperature and outdoor environment temperature；Controller, the air conditioner is when the controller receives shutdown control signal for judgement
It is no to be run with heating mode, and when the air conditioner is run with heating mode, determine whether the outdoor heat converter
Whether outlet temperature meets frosting condition, and when the outlet temperature of the outdoor heat converter meets frosting condition, enters one
Step judges whether the outdoor environment temperature is less than or equal to default environment temperature, and is less than or equal to institute in the outdoor environment temperature
Default environment temperature is stated, controls the air conditioner to be defrosted.
Air conditioner according to embodiments of the present invention, when air conditioner is shut down with heating mode end of run, passes through controller
Judge the outlet temperature of outdoor heat converter and the relation of frosting condition, and consider outdoor environment temperature, control air conditioner
Defrosted, the frosting situation to the outdoor heat converter of air conditioner judges more accurate, be generally not in frostless defrost and
There is the problem of frost can't check, also, by considering outdoor environment temperature, in outdoor heat converter frosting, but environment can be passed through
When temperature is melted, no longer air conditioner is controlled to be defrosted, control is more intelligent, can avoid unnecessary waste of energy.
In some embodiments of the invention, the controller is additionally operable to judge whether the air conditioner has been defrosted
Operation, Defrost operation has been carried out in the air conditioner, then controls the air conditioner to shut down after defrosting is completed, and in institute
State air conditioner and do not start Defrost operation, then determine whether whether the run time of the air conditioner is more than or equal to preset time.
In some embodiments of the invention, the controller is additionally operable to judge the outlet temperature of the outdoor heat converter
The first frosting condition whether is met, and when the outdoor heat converter is unsatisfactory for the first frosting condition, is determined whether described
Whether outdoor heat converter meets the second frosting condition.
Specifically, in some embodiments of the invention, first frosting condition is met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, TA
The minimum value of the outlet temperature of outdoor heat converter in preset time period is run with heating mode for the air conditioner, TC is first
Preset temperature is poor.
Specifically, in some embodiments of the invention, second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, institute
The second preset temperature is stated less than first preset temperature, TA is that the air conditioner runs preset time period interior room with heating mode
The minimum value of the outlet temperature of outer heat-exchanger, TE is that the second preset temperature is poor, and second preset temperature difference is less than described the
One preset temperature is poor.
In some embodiments of the invention, the controller be additionally operable to the outdoor heat converter outlet temperature not
When meeting the second frosting condition, determine whether whether the outlet temperature of the outdoor heat converter meets the 3rd frosting condition.
Specifically, in some embodiments of the invention, the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, institute
The 3rd preset temperature is stated less than second preset temperature.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the flow chart of the air conditioner defrosting control method according to one embodiment of the present of invention；
Fig. 2 is the flow chart of the air conditioner defrosting control method according to an alternative embodiment of the invention；
Fig. 3 is the flow chart of the air conditioner defrosting control method of another embodiment according to the present invention；
Fig. 4 is the air conditioner defrosting control method for the first frosting condition of a specific embodiment according to the present invention
Flow chart；
Fig. 5 is the air conditioner defrosting controlling party for the second frosting condition of another specific embodiment according to the present invention
The flow chart of method；
Fig. 6 is the air conditioner defrosting controlling party for the 3rd frosting condition of another specific embodiment according to the present invention
The flow chart of method；And
Fig. 7 is the block diagram of the air conditioner according to one embodiment of the present of invention.
Reference
Air conditioner 100, temperature detector 10 and controller 20.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
Purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This
Outside, the invention provides various specific techniques and material example, but those of ordinary skill in the art can be appreciated that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
" on " structure can include the first and second features and be formed as the embodiment that directly contacts, other feature shape can also be included
Into the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection or the connection of two element internals, can
To be to be joined directly together, it can also be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to following description and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.In these descriptions
In accompanying drawing, some particular implementations in embodiments of the invention are specifically disclosed, to represent the implementation for implementing the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen into the range of the spirit and intension of attached claims.
The air conditioner and its defrosting control method proposed according to embodiments of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the air conditioner defrosting control method according to one embodiment of the invention.As shown in figure 1, this hair
The air conditioner defrosting control method of bright embodiment comprises the following steps：
S1, when receiving shutdown control signal, detects the outlet temperature and outdoor ring of the outdoor heat converter of air conditioner
Border temperature.
Wherein, the shutdown control signal of reception can be sent by remote controller key, or pass through air-conditioner panel
Operation is sent, and then obtains the outlet temperature of now outdoor heat converter, and now outdoor environment temperature.
S2, whether air conditioner is run with heating mode when judgement receives shutdown control signal.
Specifically, after air conditioner receives the shutdown control signal exported by remote control or control panel, air-conditioning
Device carries out the judgement of present mode of operation first, and when judging to receive shutdown control signal, air conditioner is transported with non-heating mode
OK, for example now air conditioner is run in a chiller mode, then outdoor heat converter temperature is higher, it is impossible to frosting, then can be controlled
Air conditioner is directly shut down.If it is determined that air conditioner is run with heating mode, then step S3 is performed.
S3, judges whether the outlet temperature of outdoor heat converter meets frosting condition.
If receive shutdown control signal, judge that air conditioner is run with heating mode, outdoor heat converter temperature compared with
It is low, just shut down without timely processing, it is possible to outdoor exchanger surfaces frosting, so in order to keep air conditioner when next time starts shooting
Heating effect, prevent the frosting of outdoor heat converter surface, can determine whether outdoor heat converter outlet temperature whether
Meet and be described in detail below frosting condition, specific judgment step.If the outlet temperature of outdoor heat converter is unsatisfactory for frosting
Condition, then it is considered that the surface of outdoor heat converter does not have frosting or frosting seldom, can melt automatically.If outdoor
The outlet temperature of heat exchanger meets frosting condition, carries out step S4.
S4, if the outlet temperature of outdoor heat converter meets frosting condition, determines whether that outdoor environment temperature is
It is no to be less than or equal to default environment temperature.
Specifically, if the outlet temperature of outdoor heat converter meets frosting condition, you can be initially believed that before being powered off
Need to be defrosted, further consider whether outdoor environment temperature can melt frosting automatically, for example, judging outdoor environment
Whether temperature T1, which is less than or equal to defrosting, judges that temperature for example presets environment temperature TG, if meeting T1≤TG, performs step S5,
If T1>TG, it is believed that can be melted the frosting on outdoor heat converter surface automatically by outdoor environment temperature, then control empty
Device is adjusted directly to shut down.Wherein, preset environment temperature TG and can be set as 0~3 DEG C, preferably may range from 1~2 DEG C.For example,
There is a certain degree of frosting when the outlet temperature for judging outdoor heat converter meets frosting condition, i.e. outdoor heat converter surface
When, pressure defrosting is not necessarily carried out, such as when outdoor environment temperature is more than such as 0 DEG C of default environment temperature, even if room
There is frosting on outer heat-exchanger surface, as outdoor environment temperature and melt automatically, if still carried out in the case
Defrosting is forced, unnecessary electric energy can be consumed.
S5, if outdoor environment temperature is less than or equal to default environment temperature, control air conditioner is defrosted.
Specifically, when outdoor environment temperature is less than or equal to default environment temperature, then the frosting on outdoor heat converter surface
It can not automatically be melted by outdoor environment temperature, then control air conditioner to carry out defrosting operation.Removed in control air conditioner
It is identical automatically into defrosting action process with air conditioner when white, repeat no more.In addition, during control air conditioner defrosting, can
To be reminded by the display board of air conditioner display defrosting information, to facilitate user to recognize, air conditioner is receiving shutdown control
The reason for still being run after signal processed, and can not shut down, it is to avoid user misunderstands.
In one embodiment of the invention, as shown in Fig. 2 air conditioner is to make when judging to receive shutdown control signal
After heat pattern operation, it can also include：
S201, judges whether air conditioner carries out Defrost operation.
If it is, into step S202, otherwise into step S203.
S202, if air conditioner carries out Defrost operation, the control air conditioner shutdown after defrosting is completed.
If it is determined that air conditioner is carrying out defrosting action without out of service immediately, but defrosting action is continued executing with
Air conditioner is controlled to shut down again afterwards, because now can consider that the frosting of outdoor heat converter surface, than more serious, continued executing with and removed
Frost action, it is ensured that during air conditioner unlatching next time heating mode, outdoor heat converter surface does not have frosting, improves air conditioner
Heating capacity.
S203, if air conditioner does not carry out Defrost operation, judges whether the run time of air conditioner is more than or equal to and presets
Time.
Specifically, outdoor heat converter frosting generally occurs to run such as more than 12 minutes certain time in air conditioner, empty
Adjust device run 12 minutes in outdoor heat converter generally will not frosting, also can be seldom even if frosting, control air conditioner shut down it
It is easy to fall frost melts because of the balance of system pressure afterwards, therefore when the run time for judging air conditioner is less than default
Between such as 12 minutes when, it is not necessary that carry out pressure defrosting, air conditioner can be controlled directly to shut down.Otherwise, if air conditioner
Run time is more than or equal to the preset time, and such as air conditioner continuously runs preset time such as more than 12 minutes, then performed
Step S3.
If it is determined that the run time of air conditioner is more than or equal to preset time such as 12 minutes, air conditioner can be now obtained
The minimum value that the outlet temperature of outdoor heat converter in preset time period is continuously run with heating mode is for example set to TA, thinks and holds
Row step S3 prepares, for example, obtain air conditioner and 7 minutes are continuously operated in heating mode to outdoor heat in 12 minutes section
The minimum value of exchanger outlet temperature.
Specifically, in one embodiment of the invention, as shown in figure 3, judging the outlet temperature of outdoor heat converter is
The no frosting condition that meets is specifically included：
S301, judges whether the outlet temperature of outdoor heat converter meets the first frosting condition.
If the outlet temperature of outdoor heat converter meets the first frosting condition, step S4 is performed, if outdoor heat is handed over
The outlet temperature of parallel operation is unsatisfactory for the first frosting condition, then performs step S302.Continuously run with heating mode in air conditioner pre-
If in such as 7 minutes to 12 minutes period, the outlet temperature T of outdoor heat converter reflects outdoor heat converter in non-frosting
When steady temperature, therefore on the basis of TA, air conditioner was continued to run with after a period of time, if outdoor heat converter surface occurs
A certain degree of frosting, the outlet temperature T of outdoor heat converter can decline on the basis of TA, therefore, be come with TA and T difference
Reflect frosting situation, while T size is taken into account, if larger such as 2 DEG C of T, now thinks that outdoor heat converter does not have frosting, in order to
The accuracy of judgement can further perform step S302.Be, for example, less than -7 DEG C if T is relatively low, at the same TA and T difference also compared with
It is greater than 3 DEG C greatly, then it is assumed that there is frosting on outdoor heat converter surface, then determines whether outdoor environment temperature situation, that is, hold
Row step S4.
Wherein, in one embodiment of the invention, the first frosting condition can be met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, and TA is sky
Device is adjusted continuously to run the minimum value of the outlet temperature of outdoor heat converter in preset time period with heating mode, TC is first default
Temperature difference.Specifically, such as TB can be 0--7 DEG C, it is preferable that TB can be -3--5 DEG C；TC can be 0.5-3 DEG C, preferably
Ground, TC can be 1-2 DEG C.For example, set TB as -4 DEG C, TC is 1.5 DEG C, if air conditioner continuously run with heating mode it is default
The minimum value TA of the outlet temperature of outdoor heat converter is -3 DEG C in period, the room detected when receiving shutdown control signal
The outlet temperature of outer heat-exchanger is -3.5 DEG C, is unsatisfactory for the first above-mentioned frosting condition, it is believed that outdoor heat converter does not have
There is frosting；In addition, if the outlet temperature of the outdoor heat converter detected when receiving shutdown control signal is -7 DEG C, meet
The first above-mentioned frosting condition, then it is considered that there is frosting on outdoor heat converter surface, then perform step S4, further consider room
Whether external environment temperature enables to frosting to melt automatically, and the specific judgement such as step S4 of outdoor environment temperature is described.
S302, judges whether the outlet temperature of outdoor heat converter meets the second frosting condition.
When the outlet temperature for judging outdoor heat converter is unsatisfactory for above-mentioned first frosting condition, for the accuracy of judgement
It can determine whether whether the outlet temperature of outdoor heat converter meets the second frosting condition.If outdoor heat converter goes out
Mouth temperature meets the second frosting condition, then performs step S4.
Wherein, in one embodiment of the invention, the second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, and second is pre-
If temperature is less than the first preset temperature, TA is that air conditioner continuously runs outdoor heat converter in preset time period with heating mode
The minimum value of outlet temperature, TE is that the second preset temperature is poor, and generally at the shutdown moment, the outlet temperature T of outdoor heat converter is got over
When low, the surface also easier frosting of outdoor heat converter, if keeping TE equal with TC, can cause outdoor heat converter
Frosting degree is more serious, therefore the second preset temperature difference is poor less than the first preset temperature, i.e. TC>TE.Specifically, for example TD can
Think -3--10 DEG C, it is preferable that TD can be -5--8 DEG C；TE can be 0.1-2.5 DEG C, it is preferable that TE can be 0.5-1.0
℃.For example, setting TD as -7 DEG C, TE is 0.8 DEG C, if air conditioner continuously runs outdoor heat in preset time period with heating mode
The minimum value TA of the outlet temperature of exchanger is -5 DEG C, and the outdoor heat converter detected when receiving shutdown control signal goes out
Mouth temperature is -5.5 DEG C, is unsatisfactory for the second above-mentioned frosting condition, it is believed that outdoor heat converter does not have frosting；In addition, such as
The outlet temperature for the outdoor heat converter that fruit detects when receiving shutdown control signal is -9 DEG C, meets the second above-mentioned frosting
Condition, then it is considered that there is frosting on outdoor heat converter surface, then perform step S4, further whether consider outdoor environment temperature
Enable to frosting to melt automatically, the specific judgement such as step S4 of outdoor environment temperature is described.
Specifically, in one embodiment of the invention, as shown in figure 4, when judging to receive shutdown control signal outside room
The detailed process whether outlet temperature of heat exchanger meets the first frosting condition includes：
S401, starts.
S402, the outlet temperature T of outdoor heat converter when detection receives shutdown control signal.
S403, judges whether to meet TA-T >=TC.
Step S404 is performed if meeting, step S408 is otherwise performed
S404, judges whether to meet T≤TB.
Step S405 is performed if meeting, step S408 is otherwise performed
S405, judges whether outdoor environment temperature meets T1≤TG.
Step S406 is performed if meeting, step S408 is otherwise performed
S406, forces defrosting.
S407, judges whether the defrosting action of outdoor heat converter completes.
Step S408 is performed if defrosting action is completed, otherwise return to step S406.
S408, shutdown.
In addition, in another specific embodiment of the present invention, as shown in figure 5, when judging to receive shutdown control signal
The detailed process whether outlet temperature of outdoor heat converter meets the second frosting condition includes：
S501, starts.
S502, the outlet temperature T of outdoor heat converter when detection receives shutdown control signal.
S503, judges whether to meet TA-T >=TE.
Step S504 is performed if meeting, step S508 is otherwise performed
S504, judges whether to meet T≤TD.
Step S505 is performed if meeting, step S508 is otherwise performed
S505, judges whether outdoor environment temperature meets T1≤TG.
Step S506 is performed if meeting, step S508 is otherwise performed
S506, forces defrosting.
S507, judges whether the defrosting action of outdoor heat converter completes.
Step S508 is performed if defrosting action is completed, otherwise return to step S506.
S508, shutdown.
Further, in an embodiment of the present invention, it is generally the case that the first frosting condition and the second frosting condition can be with
The all situations of air conditioner operation are met, still, very low such as -20 DEG C in outdoor environment temperature, the relative humidity of air is usual
Also very low, now outdoor heat converter also will not be too many even if frosting, although shutdown moment outdoor heat converter outlet temperature T is very
It is low, but T is than TA drop-out value very littles, it is impossible to the first frosting condition and the second frosting condition are met, but frosting now can not
Automatically melt, therefore in one embodiment of the invention, as shown in figure 3, can also comprise the following steps：
S303, when the outlet temperature of outdoor heat converter is unsatisfactory for the second frosting condition, determines whether that outdoor heat is handed over
Whether the outlet temperature of parallel operation meets the 3rd frosting condition.
Specifically, if the outlet temperature of outdoor heat converter meets the 3rd frosting condition, step S4 is performed；If room
The outlet temperature of outer heat-exchanger is unsatisfactory for the 3rd frosting condition, then controls air conditioner shutdown.
Wherein, in one embodiment of the invention, the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, and the 3rd is pre-
If temperature is less than the second preset temperature.Specifically, such as TF can be -10--25 DEG C, it is preferable that TF can be -15--18 DEG C.
For example, set TF as -17 DEG C, if the outlet temperature of the outdoor heat converter detected when receiving shutdown control signal for -
10 DEG C, be unsatisfactory for the 3rd above-mentioned frosting condition, it is believed that outdoor heat converter does not have a frosting, or frosting is less, then can be with
Directly control air conditioner shutdown, even if there is frosting to melt automatically；In addition, if being examined when receiving shutdown control signal
The outlet temperature of the outdoor heat converter of survey is -20 DEG C, meets the 3rd above-mentioned frosting condition, then it is considered that outdoor heat exchange
Device has a frosting, but in this case, generally frosting will not be melted automatically after air conditioner shutdown, in order to prevent erroneous judgement, can be with
Further consider outdoor environment temperature, that is, perform step S4, it is considered to which whether outdoor environment temperature enables to frosting to melt automatically
Fall, the specific judgement such as step S4 of outdoor environment temperature is described.
In one particular embodiment of the present invention, as shown in fig. 6, judging to judge outdoor when receiving shutdown control signal
Whether the outlet temperature of heat exchanger, which meets the 3rd frosting condition detailed process, includes：
S601, starts.
S602, the outlet temperature T of outdoor heat converter when detection receives to receive shutdown control signal.
S603, judges whether outlet temperature meets T≤TF.
Step S604 is performed if meeting, step S607 is otherwise performed.
S604, judges whether outdoor environment temperature meets T1≤TG
If it is step S605 is performed, step S607 is otherwise performed.
S605, control air conditioner forces defrosting.
S606, judges whether the defrosting action of outdoor heat converter completes.
Step S607 is performed if defrosting action is completed, otherwise return to step S605.
S607, shutdown.
With reference to the air conditioner defrosting control process of the embodiments of the present invention, remote control or control can be received in air conditioner
During the shutdown control signal that panel processed is sent, whether air conditioner is heating mode before automatic decision shutdown；If heating mode,
It can then judge whether the shutdown moment carries out defrosting action, if carrying out defrosting action, may proceed to complete to defrost to move
Shut down again after work, if without defrosting action is carried out, the frosting situation of outdoor heat converter can be judged.When outdoor heat is handed over
When parallel operation does not have frosting, meeting automatic shutdown if outdoor heat converter has a certain degree of frosting, can determine whether outdoor
Environment temperature.If outdoor environment temperature is unsatisfactory for forcing defrosting condition, directly shut down, if outdoor environment temperature meets pressure and removed
During ice-lolly part, pressure defrosting is carried out, forces to shut down after the completion of defrosting.Using the air conditioner defrosting controlling party of the embodiment of the present invention
Method, can make air conditioner after with heating mode operation shutdown, if there is a certain degree of frosting on outdoor heat converter, and
When this frosting can not be melted automatically, pressure defrosting action is taken, the frost melts on outdoor heat converter are fallen, so that
Ensure, when start is heated next time, there is no the influence of frosting on outdoor heat converter, improve heating capacity and accelerate hot blast
Speed.
In summary, air conditioner defrosting control method according to embodiments of the present invention, is run in air conditioner with heating mode
When terminating shutdown, by judging the outlet temperature of outdoor heat converter and the relation of frosting condition, and outdoor environment is considered
Temperature, control air conditioner is defrosted, and the frosting situation to the outdoor heat converter of air conditioner judges more accurate, is not in
Frostless defrost and there is the problem of frost can't check, also, by considering outdoor environment temperature, in outdoor heat converter frosting, but can
During being melted by environment temperature, no longer air conditioner is controlled to be defrosted, control is more intelligent, and it is unnecessary to avoid
Waste of energy.
A kind of air conditioner that embodiment is proposed according to another aspect of the present invention is described with reference to the accompanying drawings.
Fig. 7 is the block diagram of the air conditioner according to one embodiment of the present of invention.As shown in fig. 7, the sky of the embodiment of the present invention
Device 100 is adjusted to include temperature detector 10 and controller 20.When receiving shutdown control signal, the detection air-conditioning of temperature detector 10
The outlet temperature and outdoor environment temperature of the outdoor heat converter of device 100；Controller 20 receives shutdown control letter for judgement
Number when air conditioner 100 whether run with heating mode, and when air conditioner 100 is run with heating mode, determine whether outdoor
Whether the outlet temperature of heat exchanger meets frosting condition, and meets frosting condition in the outlet temperature of outdoor heat converter
When, determine whether whether outdoor environment temperature is less than or equal to default environment temperature, and be less than or equal in advance in outdoor environment temperature
If during environment temperature, control air conditioner 100 is defrosted.
Specifically, wherein, the shutdown control signal of reception can be sent by remote controller key, or pass through air-conditioning
The panel operation of device 100 is sent, and then temperature detector 10 obtains the outlet temperature of now outdoor heat converter, and now outdoor
Environment temperature.Air conditioner 100 is received after the shutdown control signal exported by remote control or control panel, air conditioner
100 carry out the judgement of present mode of operation first, and when judging to receive shutdown control signal, air conditioner 100 is with non-heating mode
Operation, for example now air conditioner 100 is run in a chiller mode, then outdoor heat converter temperature is higher, it is impossible to frosting, then can be with
Directly control air conditioner 100 is directly shut down.
If controller 20 judges that air conditioner 100 is run with heating mode, outdoor exchanger temperature is relatively low, without timely
Processing is just shut down, it is possible to outdoor exchanger surfaces frosting, so keeping air conditioner 100 to heat effect during for start next time
Really, prevent the frosting of outdoor heat converter surface, controller 20 can determine whether outdoor heat converter outlet temperature whether
Meet and be described in detail below frosting condition, specific judgment step.If the outlet temperature of outdoor heat converter is unsatisfactory for frosting
Condition, then it is considered that the surface of outdoor heat converter does not have frosting or frosting seldom, can melt automatically.
If the outlet temperature of outdoor heat converter meets frosting condition, you can need to carry out before being powered off to be initially believed that
Defrosting, further considers whether outdoor environment temperature can melt frosting automatically, for example, judging that outdoor environment temperature T1 is
The no defrosting judgement temperature that is less than or equal to for example presets environment temperature TG, if meeting T1≤TG, step S5 is performed, if T1>
TG, it is believed that can be melted the frosting on outdoor heat converter surface automatically by outdoor environment temperature, then control air conditioner 100
Directly shut down.Wherein, preset environment temperature TG and can be set as -1~3 DEG C, preferably may range from 1~2 DEG C.For example, working as
Judge that the outlet temperature of outdoor heat converter meets frosting condition, i.e., when there is a certain degree of frosting on outdoor heat converter surface,
Pressure defrosting is not necessarily carried out, such as when outdoor environment temperature is more than such as 0 DEG C of default environment temperature, even if outdoor heat
Exchanger surfaces have frosting, as outdoor environment temperature and melt automatically, if still carrying out pressure in the case
Defrosting, can consume unnecessary electric energy.
When outdoor environment temperature is less than or equal to default environment temperature, then the frosting on outdoor heat converter surface can not lead to
Cross outdoor environment temperature to melt automatically, then control air conditioner 100 to carry out defrosting operation.Defrosted in control air conditioner 100
When, it is identical automatically into defrosting action process with air conditioner 100, repeat no more.In addition, in the control defrosting process of air conditioner 100
In, it can be reminded by the display board display defrosting information of air conditioner 100, to facilitate user to recognize, air conditioner 100 exists
The reason for still being run after shutdown control signal is received, and can not be shut down, it is to avoid user misunderstands.
In one embodiment of the invention, controller 20 is additionally operable to judge whether air conditioner 100 carries out Defrost operation,
When air conditioner 100 carries out Defrost operation, then control air conditioner 100 shuts down after defrosting is completed, because now it is considered that room
The frosting of outer heat-exchanger surface continues executing with defrosting action than more serious, it is ensured that air conditioner 100 opens heating mode next time
When, outdoor heat converter surface does not have frosting, improves the heating capacity of air conditioner 100.
Do not start Defrost operation in air conditioner 100, then determine whether whether the run time of air conditioner 100 is more than or equal to
Preset time.Specifically, outdoor heat converter frosting generally occur air conditioner 100 run such as 12 minutes certain time with
On, air conditioner 100 run 12 minutes in outdoor heat converter generally will not frosting, also can be seldom even if frosting, control air-conditioning
Device 100 is easy to fall frost melts because of the balance of system pressure after shutting down, therefore in the operation for judging air conditioner 100
When time is less than preset time such as 12 minutes, it is not necessary that carry out pressure defrosting, the directly shutdown of air conditioner 100 can be controlled.
Otherwise, air conditioner 100 continuously runs preset time such as more than 12 minutes, can now obtain air conditioner 100 with heating mode
The minimum value of the outlet temperature of outdoor heat converter is for example set to TA in continuous operation preset time period, thinks and judges whether to meet
Frosting condition is prepared, for example, obtain air conditioner 100 and 7 minutes are continuously operated in heating mode to outdoor in 12 minutes section
The minimum value of heat exchanger outlet temperature.
Frosting condition can include the first frosting condition and the second frosting condition.In one embodiment of the invention, control
Device 20 processed is additionally operable to judge whether the outlet temperature of outdoor heat converter meets the first frosting condition, and in outdoor heat converter not
When meeting the first frosting condition, determine whether whether outdoor heat converter meets the second frosting condition.Specifically, in air conditioner
100 are continuously run with heating mode in preset time period such as 7 minutes to 12 minutes, and the outlet temperature T of outdoor heat converter is anti-
Steady temperature of the outdoor heat converter in non-frosting has been reflected, therefore on the basis of TA, air conditioner 100 continues to run with a period of time
Afterwards, if a certain degree of frosting occurs in outdoor heat converter surface, the outlet temperature T of outdoor heat converter can be on TA basis
It is upper to decline, therefore, frosting situation is reflected with TA and T difference, while T size is taken into account, if larger such as 2 DEG C of T, now recognizes
There is no frosting for outdoor heat converter, judge whether to meet the second frosting condition in order to which the accuracy of judgement can further be held.
It it is, for example, less than -7 DEG C if T is relatively low, while TA and T difference is also larger to be greater than 3 DEG C, then it is assumed that outdoor heat converter table
There is frosting in face, then determines whether outdoor environment temperature situation.
Wherein, in one embodiment of the invention, the first frosting condition can be met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, and TA is sky
Device 100 is adjusted continuously to run the minimum value of the outlet temperature of outdoor heat converter in preset time period with heating mode, TC is first
Preset temperature is poor.Specifically, such as TB can be 0--7 DEG C, it is preferable that TB can be -3--5 DEG C；TC can be 0.5-3 DEG C,
Preferably, TC can be 1-2 DEG C.For example, setting TB as -4 DEG C, TC is 1.5 DEG C, if air conditioner 100 is continuous with heating mode
The minimum value TA for running the outlet temperature of outdoor heat converter in preset time period is -3 DEG C, when receiving shutdown control signal
The outlet temperature of the outdoor heat converter of detection is -4 DEG C, is unsatisfactory for the first above-mentioned frosting condition, it is believed that outdoor heat is handed over
Parallel operation does not have frosting；In addition, if the outlet temperature of the outdoor heat converter detected when receiving shutdown control signal is -7
DEG C, the first above-mentioned frosting condition is met, then it is considered that there is frosting on outdoor heat converter surface, then further considers outdoor ring
Whether border temperature enables to frosting to melt automatically, and the specific judgement to outdoor environment temperature is as described above.
When controller 20 judges that the outlet temperature of outdoor heat converter is unsatisfactory for above-mentioned first frosting condition, in order to judge
Accuracy can determine whether whether the outlet temperature of outdoor heat converter meets the second frosting condition.If outdoor heat is handed over
The outlet temperature of parallel operation meets the second frosting condition, further considers whether outdoor environment temperature enables to frosting to melt automatically
Fall.
Wherein, in one embodiment of the invention, the second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, and second is pre-
If temperature is less than the first preset temperature, TA is that air conditioner 100 continuously runs outdoor heat exchange in preset time period with heating mode
The minimum value of the outlet temperature of device, TE is that the second preset temperature is poor, generally at shutdown moment, the outlet temperature of outdoor heat converter
When T is lower, the surface also easier frosting of outdoor heat converter, if keeping TE equal with TC, can cause outdoor heat exchange
The frosting degree of device is more serious, therefore the second preset temperature difference is poor less than the first preset temperature, i.e. TC>TE.Specifically, for example
TD can be -3--10 DEG C, it is preferable that TD can be -5--8 DEG C；TE can be 0.1-2.5 DEG C, it is preferable that TE can be 0.5-
1.0℃.For example, setting TD as -7 DEG C, TE is 0.8 DEG C, if air conditioner 100 is continuously run in preset time period with heating mode
The minimum value TA of the outlet temperature of outdoor heat converter is -5 DEG C, the outdoor heat exchange detected when receiving shutdown control signal
The outlet temperature of device is -6 DEG C, is unsatisfactory for the second above-mentioned frosting condition, it is believed that outdoor heat converter does not have frosting；Separately
Outside, if the outlet temperature of outdoor heat converter detected when receiving shutdown control signal is -9 DEG C, above-mentioned the is met
Two frosting conditions, then it is considered that there is frosting on outdoor heat converter surface, then further consider that outdoor environment temperature whether can
So that frosting is melted automatically, the specific judgement to outdoor environment temperature is as described above.
Further, in an embodiment of the present invention, it is generally the case that the first frosting condition and the second frosting condition can be with
The all situations of the operation of air conditioner 100 are met, still, very low such as -20 DEG C in outdoor environment temperature, the relative humidity of air is led to
Normal also very low, now outdoor heat converter also will not be too many even if frosting, although shutdown moment outdoor heat converter outlet temperature T
It is very low, but T is than TA drop-out value very littles, it is impossible to the first frosting condition and the second frosting condition are met, therefore at one of the present invention
In embodiment, controller 20 is additionally operable to, when the outlet temperature of outdoor heat converter is unsatisfactory for the second frosting condition, further sentence
Whether the outlet temperature of disconnected outdoor heat converter meets the 3rd frosting condition.
Specifically, if the outlet temperature of outdoor heat converter meets the 3rd frosting condition, outdoor ring is further considered
The situation of border temperature；If the outlet temperature of outdoor heat converter is unsatisfactory for the 3rd frosting condition, control air conditioner 100 is closed
Machine.
Wherein, in one embodiment of the invention, the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, and the 3rd is pre-
If temperature is less than the second preset temperature.Specifically, such as TF can be -10--25 DEG C, it is preferable that TF can be -15--18 DEG C.
For example, set TF as -17 DEG C, if the outlet temperature of the outdoor heat converter detected when receiving shutdown control signal for -
10 DEG C, be unsatisfactory for the 3rd above-mentioned frosting condition, it is believed that outdoor heat converter does not have a frosting, or frosting is less, then can be with
Directly control air conditioner 100 shuts down, even if there is frosting to melt automatically；Shutdown control signal is received in addition, if working as
When the outlet temperature of outdoor heat converter that detects be -20 DEG C, meet the 3rd above-mentioned frosting condition, then it is considered that outdoor heat
Exchanger has frosting, but in this case, generally frosting will not be melted automatically after the shutdown of air conditioner 100, in order to prevent missing
Sentence, it is further contemplated that outdoor environment temperature, that is, consider whether outdoor environment temperature enables to frosting to melt automatically, it is right
The specific judgement of outdoor environment temperature is as above specifically described.
In summary, air conditioner according to embodiments of the present invention, when air conditioner is shut down with heating mode end of run, leads to
Cross controller and judge the outlet temperature of outdoor heat converter and the relation of frosting condition, and consider outdoor environment temperature, control
Air conditioner processed is defrosted, and the frosting situation to the outdoor heat converter of air conditioner judges more accurate, is not in frostlessization
Frost and there is the problem of frost can't check, also, by considering outdoor environment temperature, in outdoor heat converter frosting, but can pass through
When environment temperature is melted, no longer control air conditioner to be defrosted, control is more intelligent, unnecessary electric energy wave can be avoided
Take.
Any process described otherwise above or method description are construed as in flow chart or herein, represent to include
Module, fragment or the portion of the code of one or more executable instructions for the step of realizing specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list for the executable instruction for realizing logic function, it may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress for combining these instruction execution systems, device or equipment and using
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, can even is that can be in the paper of printing described program thereon or other are suitable for computer-readable medium
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
Rapid to can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is realized using in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (12)
1. a kind of air conditioner defrosting control method, it is characterised in that comprise the following steps：
S1, when receiving shutdown control signal, detects the outlet temperature and outdoor environment temperature of the outdoor heat converter of air conditioner
Degree；
S2, whether the air conditioner is run with heating mode when judgement receives shutdown control signal；
S3, if the air conditioner is run with heating mode, determining whether the outlet temperature of the outdoor heat converter is
The first frosting condition of no satisfaction, if the outlet temperature of the outdoor heat converter meets the first frosting condition, performs step
S4, first frosting condition is met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, and TA is institute
The minimum value that air conditioner continuously runs the outlet temperature of outdoor heat converter in preset time period with heating mode is stated, TC is first
Preset temperature is poor；
S4, if the outlet temperature of the outdoor heat converter meets the first frosting condition, determines whether the outdoor ring
Whether border temperature is less than or equal to default environment temperature；
S5, if the outdoor environment temperature is less than or equal to the default environment temperature, controls the air conditioner to be defrosted.
2. air conditioner defrosting control method as claimed in claim 1, it is characterised in that judging to receive shutdown control signal
Shi Suoshu air conditioners also include after being run with heating mode：
Judge whether the air conditioner carries out Defrost operation；
If the air conditioner carries out Defrost operation, the air conditioner is controlled to shut down after defrosting is completed；
If the air conditioner does not carry out Defrost operation, when judging whether the run time of the air conditioner is more than or equal to default
Between；
If the run time of the air conditioner is more than or equal to the preset time, step S3 is performed.
3. air conditioner defrosting control method as claimed in claim 1, it is characterised in that also include：
If the outlet temperature of the outdoor heat converter is unsatisfactory for the first frosting condition, determine whether that the outdoor heat is handed over
Whether the outlet temperature of parallel operation meets the second frosting condition；
If the outlet temperature of the outdoor heat converter meets the second frosting condition, step S4 is performed.
4. air conditioner defrosting control method as claimed in claim 3, it is characterised in that second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, described the
Two preset temperatures are less than first preset temperature, and TA is that the air conditioner continuously runs preset time period interior room with heating mode
The minimum value of the outlet temperature of outer heat-exchanger, TE is that the second preset temperature is poor, and second preset temperature difference is less than described the
One preset temperature is poor.
5. air conditioner defrosting control method as claimed in claim 4, it is characterised in that also include：
When the outlet temperature of the outdoor heat converter is unsatisfactory for the second frosting condition, the outdoor heat exchange is determined whether
Whether the outlet temperature of device meets the 3rd frosting condition；
If the outlet temperature of the outdoor heat converter meets the 3rd frosting condition, step S4 is performed；
If the outlet temperature of the outdoor heat converter is unsatisfactory for the 3rd frosting condition, the air conditioner is controlled to shut down.
6. air conditioner defrosting control method as claimed in claim 5, it is characterised in that the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, described the
Three preset temperatures are less than second preset temperature.
7. a kind of air conditioner, it is characterised in that including：
Temperature detector, when receiving shutdown control signal, the temperature detector detects the outdoor heat converter of air conditioner
Outlet temperature and outdoor environment temperature；
Controller, whether the air conditioner is transported with heating mode when the controller receives shutdown control signal for judgement
OK, and when the air conditioner is run with heating mode, determine whether whether the outlet temperature of the outdoor heat converter is full
The first frosting condition of foot, and, when the outlet temperature of the outdoor heat converter meets the first frosting condition, determine whether
Whether the outdoor environment temperature is less than or equal to default environment temperature, and is less than or equal to the default environment in outdoor environment temperature
Temperature, controls the air conditioner to be defrosted, and first frosting condition is met：
T≤TB and TA-T >=TC, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TB is the first preset temperature, and TA is institute
The minimum value that air conditioner continuously runs the outlet temperature of outdoor heat converter in preset time period with heating mode is stated, TC is first
Preset temperature is poor.
8. air conditioner as claimed in claim 7, it is characterised in that the controller is additionally operable to judge whether the air conditioner enters
Row Defrost operation, when the air conditioner carries out Defrost operation, then controls the air conditioner to shut down after defrosting is completed, and
Do not start Defrost operation in the air conditioner, then when determining whether whether the run time of the air conditioner is more than or equal to default
Between.
9. air conditioner as claimed in claim 7, it is characterised in that the controller is additionally operable in the outdoor heat converter not
When meeting the first frosting condition, determine whether whether the outdoor heat converter meets the second frosting condition.
10. air conditioner as claimed in claim 9, it is characterised in that second frosting condition is met：
T≤TD and TA-T >=TE, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TD is the second preset temperature, described the
Two preset temperatures are less than first preset temperature, and TA is that the air conditioner continuously runs preset time period interior room with heating mode
The minimum value of the outlet temperature of outer heat-exchanger, TE is that the second preset temperature is poor, and second preset temperature difference is less than described the
One preset temperature is poor.
11. air conditioner as claimed in claim 10, it is characterised in that the controller is additionally operable in the outdoor heat converter
Outlet temperature when being unsatisfactory for the second frosting condition, determine whether whether the outlet temperature of the outdoor heat converter meets
Three frosting conditions.
12. air conditioner as claimed in claim 11, it is characterised in that the 3rd frosting condition is met：
T≤TF, wherein,
T is the outlet temperature of outdoor heat converter when receiving shutdown control signal, and TF is the 3rd preset temperature, described the
Three preset temperatures are less than second preset temperature.
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| CN201410226350.XA CN105157290B (en) | 2014-05-26 | 2014-05-26 | Air conditioner and its defrosting control method |
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| CN201410226350.XA CN105157290B (en) | 2014-05-26 | 2014-05-26 | Air conditioner and its defrosting control method |
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| CN116194719A (en) * | 2020-09-24 | 2023-05-30 | 青岛海信日立空调***有限公司 | Air conditioner and defrosting method thereof |
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| CN112594868B (en) * | 2020-12-30 | 2021-11-23 | 广东积微科技有限公司 | Air conditioner and defrosting control method thereof |
| CN112594869A (en) * | 2020-12-30 | 2021-04-02 | 广东积微科技有限公司 | Air conditioner and defrosting control method thereof |
| CN112594870B (en) * | 2020-12-30 | 2022-03-08 | 广东积微科技有限公司 | Air conditioner and defrosting control method thereof |
| CN112594823A (en) * | 2021-01-25 | 2021-04-02 | 广东积微科技有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN112923517A (en) * | 2021-03-24 | 2021-06-08 | 广东积微科技有限公司 | Air conditioner defrosting control method and air conditioner |
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