CN111059700A - Air conditioner defrosting control method and device and air conditioner - Google Patents
Air conditioner defrosting control method and device and air conditioner Download PDFInfo
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- CN111059700A CN111059700A CN201911343091.8A CN201911343091A CN111059700A CN 111059700 A CN111059700 A CN 111059700A CN 201911343091 A CN201911343091 A CN 201911343091A CN 111059700 A CN111059700 A CN 111059700A
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- 238000010257 thawing Methods 0.000 title claims abstract description 271
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 49
- 230000002159 abnormal effect Effects 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- General Engineering & Computer Science (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The application relates to an air conditioner defrosting control method and device and an air conditioner, and belongs to the technical field of air conditioner defrosting. The application includes: when the defrosting condition is met, a non-stop defrosting mode is switched in and operated, and the operation of the non-stop defrosting mode comprises the following steps: the refrigerant main loop continues to run the heating cycle, and the defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into the outdoor heat exchanger so as to defrost the outdoor heat exchanger; acquiring operation parameters under the operation of the non-stop defrosting mode; judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters; when judging that the abnormity occurs, switching the defrosting of the air conditioner into a reverse defrosting mode, wherein the reverse defrosting mode comprises the following operation steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized. Through the air conditioner, the reliability of the operation of the air conditioner is guaranteed, and the normal heating operation of the air conditioner is guaranteed.
Description
Technical Field
The application belongs to the technical field of air conditioner defrosting, and particularly relates to an air conditioner defrosting control method and device and an air conditioner.
Background
The frosting problem of the outdoor heat exchanger has great influence on normal heating of the air conditioner in winter, and the frosting of the outdoor heat exchanger can weaken the heat transfer coefficient of the outdoor unit, so that the heating capacity of the air conditioning system is greatly reduced.
As a method of defrosting, for example: an air conditioner and a control method thereof are disclosed in a patent with the application number of CN2018111341417, and a non-stop defrosting mode is provided, which is specifically embodied as follows: when the air conditioner judges that defrosting is carried out, the compressor is not stopped, and the four-way valve is not reversed, the electromagnetic valve on the defrosting bypass branch is controlled to be opened, so that the defrosting bypass branch is conducted, and defrosting refrigerants are introduced from a refrigerant main loop of the air conditioner to enter the outdoor heat exchanger by using the defrosting bypass branch (in the above-mentioned patent publication, the defrosting refrigerants can be compressor exhaust refrigerants before entering the indoor heat exchanger, and can also be refrigerants which come out from the indoor heat exchanger and are not throttled), so that the outdoor heat exchanger is defrosted.
When the air conditioner uses the non-stop defrosting mode provided by the above patent to defrost, if the defrosting bypass branch is abnormal, for example, the electromagnetic valve on the defrosting bypass branch cannot be opened or is not opened in place, the defrosting refrigerant cannot enter or cannot smoothly enter the outdoor heat exchanger, so that the outdoor heat exchanger cannot defrost or cannot defrost smoothly, the reliability of the air conditioner operation is reduced, and further the subsequent normal heating operation can be affected, so that the subsequent normal heating operation cannot be realized, or the heating effect is rapidly deteriorated.
Disclosure of Invention
In order to overcome the problems in the related art at least to a certain extent, the application provides the air conditioner defrosting control method, the air conditioner defrosting control device and the air conditioner, which are beneficial to guaranteeing the reliability of the operation of the air conditioner so as to guarantee the normal heating operation of the air conditioner.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect,
the application provides an air conditioner defrosting control method, which comprises the following steps:
when the defrosting condition is met, switching into an operation non-stop defrosting mode, wherein the operation of the non-stop defrosting mode comprises the following steps: the refrigerant main loop continues to run a heating cycle, and a defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into an outdoor heat exchanger so as to defrost the outdoor heat exchanger;
acquiring operation parameters under the non-stop defrosting mode operation;
judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters;
when the abnormal condition is judged, the air conditioner defrosting is switched into a reverse defrosting mode, and the reverse defrosting mode is operated and comprises the following steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
Further, the acquiring the operation parameters of the non-stop defrosting mode operation includes:
and acquiring the running frequency and the running current of the compressor under the running of the non-stop defrosting mode.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: if | f-f '| is more than or equal to delta f and I is more than or equal to I', judging that the operation of the non-stop defrosting mode is abnormal;
wherein f is the compressor operating frequency, f 'is a preset comparison frequency, Δ f is a frequency threshold difference, I is the compressor operating current, and I' is a preset comparison current.
Further, the acquiring the operation parameters of the non-stop defrosting mode operation includes:
and acquiring the defrosting operation time length under the non-stop defrosting mode operation.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: if t is more than or equal to t', judging that the operation in the non-stop defrosting mode is abnormal;
wherein t is the defrosting operation time length under the non-stop defrosting mode operation, and t' is the preset comparison time length.
Further, the operation in the non-stop defrost mode further comprises: after the non-stop defrosting mode is switched on, the indoor fan stops running, and the indoor fan is controlled to be switched on and off according to the temperature of the indoor heat exchanger;
the obtaining of the operation parameters in the non-stop defrosting mode operation further comprises:
and acquiring the starting times of the indoor fan under the non-stop defrosting mode operation.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: n is more than or equal to n', the abnormal operation of the non-stop defrosting mode is judged;
wherein n is the starting times of the indoor fan in the non-stop defrosting mode, and t' is the preset comparison times.
Further, the acquiring the operation parameters of the non-stop defrosting mode operation includes:
and when the defrosting mode without stopping is switched in, stopping the indoor fan and starting to acquire the running parameters under the operation of the defrosting mode without stopping.
Further, the method further comprises:
and after the air conditioner defrosting is switched into the reverse defrosting mode for defrosting, directly switching into the reverse defrosting mode when the defrosting condition is judged to be met.
In a second aspect of the present invention,
the application provides an air conditioner defrosting control device, the device includes:
a first cut-in module for cutting in to operate an un-stop defrost mode when a defrost condition is satisfied, the operation of the un-stop defrost mode comprising: the refrigerant main loop continues to run a heating cycle, and a defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into an outdoor heat exchanger so as to defrost the outdoor heat exchanger;
the acquisition module is used for acquiring the operation parameters under the non-stop defrosting mode operation;
the judging module is used for judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters;
the second cut-in module is used for cutting in the air conditioner defrosting to operate a reverse defrosting mode when the abnormity occurs, and the operation of the reverse defrosting mode comprises the following steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
In a third aspect,
the application provides an air conditioner, its characterized in that includes:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of any of the above methods.
This application adopts above technical scheme, possesses following beneficial effect at least:
this application is when satisfying the defrosting condition, cut into the operation and do not shut down the defrosting mode to the defrosting mode comes to the outdoor unit heat exchanger defrosting of not shutting down, and obtain the operating parameter under the mode operation of defrosting of not shutting down, judge whether the mode operation of defrosting takes place unusually, when judging out to take place unusually, cut into the reverse defrosting mode of operation with the air conditioner defrosting, guarantee the defrosting to outdoor heat exchanger, and then guarantee the reliability of air conditioner operation, in order to guarantee the normal operation of heating of air conditioner.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart illustrating a method of controlling defrosting of an air conditioner according to an exemplary embodiment;
fig. 2 is a block diagram illustrating a structure of an air conditioner defrosting control apparatus according to an exemplary embodiment;
fig. 3 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart illustrating an air conditioner defrost control method according to an exemplary embodiment, the air conditioner defrost control method including the steps of, as shown in fig. 1:
step S101, when the defrosting condition is met, a non-stop defrosting mode is switched in to operate, and the operation of the non-stop defrosting mode comprises the following steps: and the refrigerant main loop continues to operate a heating cycle, and the defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into the outdoor heat exchanger so as to defrost the outdoor heat exchanger.
Specifically, for example, in the process of heating by the air conditioner in winter, the air conditioner performs defrosting judgment through preset defrosting conditions, for the defrosting conditions, for example, one or more of outdoor temperature, humidity, and outdoor heat exchanger temperature may be preset to form the defrosting conditions for judgment, and the specific method may refer to the disclosure in the related defrosting technology. When the defrosting condition is met, the air conditioner is in a non-stop defrosting mode by default, and for the non-stop defrosting mode, reference can be made to an air conditioner and a control method thereof disclosed in the patent with the application number of CN 2018111341417. For the refrigerant main loop, the refrigerant main loop comprises a compressor, a four-way valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger and the like, and the refrigerant circulating flow direction under the heating cycle is as follows: compressor → four-way valve → indoor heat exchanger → throttling element → outdoor heat exchanger → compressor, during normal heating, the air conditioner operates in the refrigerant circulation flow direction under the heating cycle, and when the air conditioner is switched into a non-stop defrosting mode to defrost, the air conditioner continues to run the heating cycle to realize non-stop and control the conduction of the defrosting bypass branch, for introducing the defrosting refrigerant by using the defrosting bypass branch, in the above-mentioned patent, the defrosting refrigerant may be the compressor exhaust refrigerant before entering the indoor heat exchanger, or the refrigerant which is not throttled and comes out from the indoor heat exchanger, the refrigerants in the above two cases have the temperature enough to defrost the outdoor heat exchanger, after the defrosting bypass branch is led into the outdoor heat exchanger, the defrosting of the outdoor heat exchanger can be realized.
Through the explanation of the non-stop defrosting mode, the temperature of the indoor temperature is guaranteed in the non-stop defrosting mode during the operation of the air conditioner, and the heating comfort experience of a user is further improved.
Under the normal condition, this non-stop defrosting mode of air conditioner operation, can realize that the user enjoys the heating experience effect of travelling comfort, however, it also can happen that, when the non-stop defrosting mode is operated, the defrosting bypass branch road takes place unusually, for example, the solenoid valve on the defrosting bypass branch road can't be opened or is opened not in place, can make the defrosting refrigerant can not get into or can not get into outdoor heat exchanger smoothly, cause outdoor heat exchanger can not change the frost or can not change the frost smoothly, lead to the reliability reduction of air conditioner operation, and then can influence subsequent normal heating operation, make subsequent normal heating operation can not realize, or, the effect of heating sharply worsens.
Therefore, it is necessary to further secure the reliability of the operation of the air conditioner through the following related steps to secure the normal heating operation of the air conditioner.
And S102, acquiring the running parameters under the running of the non-stop defrosting mode.
Specifically, the operation parameters of the air conditioner in the non-stop defrosting mode may include: in practical application, one or more of the compressor running frequency, the compressor running current, the defrosting running time, the opening times of the indoor fan and the like under the non-stop defrosting mode running can be acquired in real time, so that whether the running of the air conditioner in the non-stop defrosting mode is abnormal or not can be monitored.
And S103, judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters.
Specifically, whether the non-stop defrosting mode operation is abnormal or not can be determined by one or more of the above listed operation parameters and the preset determination conditions corresponding to each of the operation parameters, and the determination of the abnormality of this part will be specifically described below.
Step S104, when the abnormity is judged, switching the defrosting of the air conditioner into a reverse defrosting mode, wherein the reverse defrosting mode comprises the following operation steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
Specifically, when it is determined that the operation in the non-stop defrosting mode is abnormal, in order to ensure the reliability of the operation of the air conditioner, effective defrosting needs to be realized, and the subsequent normal heating operation of the air conditioner is ensured. Under the reverse defrosting mode, the compressor firstly executes the shutdown operation and controls the four-way valve to change the direction, so that the refrigerant main loop runs the refrigeration cycle, and the refrigerant circulation flow direction under the refrigeration cycle is as follows: compressor → four-way valve → outdoor heat exchanger → throttling element → indoor heat exchanger → compressor, and in the refrigeration cycle, the outdoor heat exchanger is used as a condenser to dissipate heat to air to defrost.
To sum up, through the above embodiment scheme, when the defrosting condition is met, the non-stop defrosting mode is switched in to operate, the outdoor unit heat exchanger is defrosted in the non-stop defrosting mode, the operating parameters in the non-stop defrosting mode are obtained to judge whether the non-stop defrosting mode is abnormal or not, and when the judgment result shows that the non-stop defrosting mode is abnormal, the defrosting of the outdoor heat exchanger is switched in to operate the reverse defrosting mode to guarantee the defrosting of the outdoor heat exchanger, so that the operation reliability of the air conditioner is guaranteed, and the normal heating operation of the air conditioner is guaranteed.
In the following, the following description will be further made by using a specific embodiment to determine whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters in step S103.
In one embodiment, the step S103 of obtaining the operation parameters in the non-stop defrosting mode includes:
and acquiring the running frequency and the running current of the compressor under the running of the non-stop defrosting mode.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: if | f-f '| is more than or equal to delta f and I is more than or equal to I', judging that the operation of the non-stop defrosting mode is abnormal;
wherein f is the compressor operating frequency, f 'is a preset comparison frequency, Δ f is a frequency threshold difference, I is the compressor operating current, and I' is a preset comparison current.
According to the embodiment, when the air conditioner defrosts in the non-stop defrosting mode, in a specific application scene, if the compressor has the frequency reduction operation, the frequency is reduced to satisfy | f-f '| is not less than Δ f, and the frequency reduction operation causes the current to satisfy I not less than I', so that the defrosting abnormality under the non-stop defrosting mode operation can be fully judged, the operation reliability of the air conditioner cannot be ensured, and even the compressor can be damaged if the compressor is continuously operated according to the frequency reduction operation, therefore, in order to ensure the operation reliability of the air conditioner and ensure the subsequent normal heating, the non-stop defrosting mode needs to be quitted, and the reverse defrosting mode is switched in for defrosting.
In one embodiment, the frequency threshold difference may be set to 4Hz, and the preset comparison current may be specifically set according to the model, for example, the preset comparison current of an air conditioner with 70 cooling capacities may be set to 17A, and the preset comparison current of an air conditioner with 50 cooling capacities may be set to 11A.
In one embodiment, the obtaining the operation parameters in the non-stop defrosting mode operation includes:
and acquiring the defrosting operation time length under the non-stop defrosting mode operation.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: if t is more than or equal to t', judging that the operation in the non-stop defrosting mode is abnormal;
wherein t is the defrosting operation time length under the non-stop defrosting mode operation, and t' is the preset comparison time length.
Specifically, in practical applications, the abnormal judgment according to the defrosting operation duration in the non-stop defrosting mode operation may be applied alone, or may be applied together with the above abnormal judgment according to the compressor operation frequency and the compressor operation current in the non-stop defrosting mode operation, so that when each condition is satisfied, the abnormal judgment is made. When the air conditioner defrosts in the defrosting mode without stopping, the defrosting operation time is too long, which may be caused by the fact that the air conditioner cannot defrost, and may also be caused by the fact that the defrosting effect is poor and the defrosting is always incomplete. In one embodiment, the preset comparison period may be set to 12 minutes. The longer defrosting operation time is defined by comparing with the preset comparison time, and the predicament that the air conditioner continuously performs defrosting operation under the non-stop defrosting mode is cut off, so that the reliability of the operation of the air conditioner is ensured, and the follow-up normal heating is ensured.
In one embodiment, the operation in the non-stop defrost mode further comprises: after the non-stop defrosting mode is switched on, the indoor fan stops running, and the indoor fan is controlled to be switched on and off according to the temperature of the indoor heat exchanger;
the obtaining of the operation parameters in the non-stop defrosting mode operation further comprises:
and acquiring the starting times of the indoor fan under the non-stop defrosting mode operation.
Further, the determining whether the operation in the non-stop defrosting mode is abnormal according to the operation parameters includes:
if the following conditions are met: n is more than or equal to n', the abnormal operation of the non-stop defrosting mode is judged;
wherein n is the starting times of the indoor fan in the non-stop defrosting mode, and t' is the preset comparison times.
Specifically, under the operation of the non-stop defrosting mode, the indoor fan can be stopped to operate, the heat exchange efficiency of the indoor heat exchanger is reduced, the temperature of a refrigerant entering the outdoor heat exchanger is increased, and defrosting is accelerated. If the defrosting bypass branch is abnormal, for example, the solenoid valve of the defrosting bypass branch fails to open or is not opened in place, so that the defrosting refrigerant cannot be introduced or cannot be introduced smoothly, and the outdoor heat exchanger is not defrosted or is not defrosted all the time. The outdoor heat exchanger has very low heat exchange efficiency, the circulation flow of a system refrigerant is reduced when defrosting is caused, the load of the system is increased, the running current of a compressor is too large, the running pressure is too high, and the reliability is reduced.
Through the scheme of the embodiment, under the condition of running in the non-stop defrosting mode, when the starting times of the indoor fan reach the preset comparison times, the abnormity is judged. In the context of a particular application, the term,
the abnormity judgment according to the opening times of the indoor fan running in the non-stop defrosting mode can be applied independently, and can also be combined with the running frequency of the compressor, the running current of the compressor and the running time of defrosting under the non-stop defrosting mode to be applied together, so that when all conditions are met, the abnormity judgment is carried out.
In one embodiment, the preset number of comparisons may be set to 5.
In one embodiment, the obtaining the operation parameters in the non-stop defrosting mode operation includes:
and when the defrosting mode without stopping is switched in, stopping the indoor fan and starting to acquire the running parameters under the operation of the defrosting mode without stopping.
Specifically, when the air conditioner is switched into a non-stop defrosting mode for defrosting, the operation of the indoor fan is stopped, and the operation frequency of the compressor, the operation current of the compressor, the defrosting operation time, the opening times of the indoor fan and the like are obtained, so that the abnormity is judged.
As shown in fig. 1, in one embodiment, the method further comprises:
and S105, directly switching into the reverse defrosting mode when judging that the defrosting condition is met after switching the air conditioner defrosting into the reverse defrosting mode for defrosting.
Specifically, according to the scheme of the embodiment, when the shutdown defrosting mode of the air conditioner is abnormal in operation, the reverse defrosting mode is switched in for defrosting, and in the subsequent heating process, when the defrosting condition is judged to be met, the reverse defrosting mode is directly switched in, and the shutdown defrosting mode is not operated. The embodiment can avoid that after the non-stop defrosting mode is abnormal, the non-stop defrosting mode with abnormal conditions is still operated in each defrosting operation, and then the abnormal judgment is carried out to switch into the reverse defrosting mode, so that the defrosting efficiency is reduced and the operation reliability of the air conditioner is reduced.
Fig. 2 is a block diagram illustrating a structure of an air conditioner defrost control apparatus according to an exemplary embodiment, and as shown in fig. 2, the air conditioner defrost control apparatus 2 includes:
a first cut-in module 201, configured to cut in an operation of an uninterruptible defrost mode when a defrost condition is satisfied, where the operation of the uninterruptible defrost mode includes: the refrigerant main loop continues to run a heating cycle, and a defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into an outdoor heat exchanger so as to defrost the outdoor heat exchanger;
an obtaining module 202, configured to obtain an operation parameter in the non-stop defrosting mode;
the judging module 203 is used for judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters;
a second switching-in module 204, configured to switch in an air conditioner defrosting mode to a reverse defrosting mode when it is determined that an abnormality occurs, where the reverse defrosting mode includes: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
Further, the obtaining module 202 is specifically configured to:
and acquiring the running frequency and the running current of the compressor under the running of the non-stop defrosting mode.
Further, the determining module 203 is specifically configured to:
if the following conditions are met: if | f-f '| is more than or equal to delta f and I is more than or equal to I', judging that the operation of the non-stop defrosting mode is abnormal;
wherein f is the compressor operating frequency, f 'is a preset comparison frequency, Δ f is a frequency threshold difference, I is the compressor operating current, and I' is a preset comparison current.
Further, the obtaining module 202 is specifically configured to:
and acquiring the defrosting operation time length under the non-stop defrosting mode operation.
Further, the determining module 203 is specifically configured to:
if the following conditions are met: if t is more than or equal to t', judging that the operation in the non-stop defrosting mode is abnormal;
wherein t is the defrosting operation time length under the non-stop defrosting mode operation, and t' is the preset comparison time length.
Further, the operation in the non-stop defrost mode further comprises: after the non-stop defrosting mode is switched on, the indoor fan stops running, and the indoor fan is controlled to be switched on and off according to the temperature of the indoor heat exchanger;
the obtaining module 202 is specifically configured to: and acquiring the starting times of the indoor fan under the non-stop defrosting mode operation.
Further, the determining module 203 is specifically configured to:
if the following conditions are met: n is more than or equal to n', the abnormal operation of the non-stop defrosting mode is judged;
wherein n is the starting times of the indoor fan in the non-stop defrosting mode, and t' is the preset comparison times.
Further, the obtaining module 202 is specifically configured to: and when the defrosting mode without stopping is switched in, stopping the indoor fan and starting to acquire the running parameters under the operation of the defrosting mode without stopping.
Further, the air conditioner defrosting control device 2 includes:
and a third switching-in module 205, configured to directly switch in to operate the reverse defrosting mode when it is determined that the defrosting condition is met after the air conditioner defrosting is switched in to the reverse defrosting mode for defrosting.
With regard to the air conditioner defrosting control apparatus 2 in the above-described related embodiment, the specific manner in which the respective modules perform operations has been described in detail in the embodiment related to the method, and will not be described in detail here.
Fig. 3 is a block diagram illustrating a structure of an air conditioner according to an exemplary embodiment, and as shown in fig. 3, the air conditioner 3 includes:
a memory 301 having an executable program stored thereon;
a processor 302 for executing the executable program in the memory 301 to implement the steps of any of the above methods.
With regard to the air conditioner 3 in the above-described embodiment, the specific manner in which the processor 302 thereof executes the program in the memory 301 has been described in detail in the embodiment related to the method, and will not be described in detail here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. Further, "connected" as used herein may include wirelessly connected. The term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: represents modules, segments or portions of code which include one or more executable instructions for implementing specific logical functions or steps of a process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. An air conditioner defrosting control method is characterized by comprising the following steps:
when the defrosting condition is met, switching into an operation non-stop defrosting mode, wherein the operation of the non-stop defrosting mode comprises the following steps: the refrigerant main loop continues to run a heating cycle, and a defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into an outdoor heat exchanger so as to defrost the outdoor heat exchanger;
acquiring operation parameters under the non-stop defrosting mode operation;
judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters;
when the abnormal condition is judged, the air conditioner defrosting is switched into a reverse defrosting mode, and the reverse defrosting mode is operated and comprises the following steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
2. The method of claim 1, wherein said obtaining operating parameters for said non-stop defrost mode operation comprises:
and acquiring the running frequency and the running current of the compressor under the running of the non-stop defrosting mode.
3. The method of claim 2, wherein said determining whether said non-stop defrost mode operation is abnormal based on said operational parameters comprises:
if the following conditions are met: if | f-f '| is more than or equal to delta f and I is more than or equal to I', judging that the operation of the non-stop defrosting mode is abnormal;
wherein f is the compressor operating frequency, f 'is a preset comparison frequency, Δ f is a frequency threshold difference, I is the compressor operating current, and I' is a preset comparison current.
4. The method of claim 1, wherein said obtaining operating parameters for said non-stop defrost mode operation comprises:
and acquiring the defrosting operation time length under the non-stop defrosting mode operation.
5. The method of claim 4, wherein said determining whether said non-stop defrost mode operation is abnormal based on said operational parameters comprises:
if the following conditions are met: if t is more than or equal to t', judging that the operation in the non-stop defrosting mode is abnormal;
wherein t is the defrosting operation time length under the non-stop defrosting mode operation, and t' is the preset comparison time length.
6. The method of any of claims 1-5, wherein the operation in the non-stop defrost mode further comprises: after the non-stop defrosting mode is switched on, the indoor fan stops running, and the indoor fan is controlled to be switched on and off according to the temperature of the indoor heat exchanger;
the obtaining of the operation parameters in the non-stop defrosting mode operation further comprises:
and acquiring the starting times of the indoor fan under the non-stop defrosting mode operation.
7. The method of claim 6, wherein said determining whether said non-stop defrost mode operation is abnormal based on said operational parameters comprises:
if the following conditions are met: n is more than or equal to n', the abnormal operation of the non-stop defrosting mode is judged;
wherein n is the starting times of the indoor fan in the non-stop defrosting mode, and t' is the preset comparison times.
8. The method of claim 6, wherein said obtaining operating parameters for said non-stop defrost mode operation comprises:
and when the defrosting mode without stopping is switched in, stopping the indoor fan and starting to acquire the running parameters under the operation of the defrosting mode without stopping.
9. The method of claim 1, further comprising:
and after the air conditioner defrosting is switched into the reverse defrosting mode for defrosting, directly switching into the reverse defrosting mode when the defrosting condition is judged to be met.
10. An air conditioner defrost control apparatus, the apparatus comprising:
a first cut-in module for cutting in to operate an un-stop defrost mode when a defrost condition is satisfied, the operation of the un-stop defrost mode comprising: the refrigerant main loop continues to run a heating cycle, and a defrosting bypass branch is utilized to introduce defrosting refrigerant from the refrigerant main loop into an outdoor heat exchanger so as to defrost the outdoor heat exchanger;
the acquisition module is used for acquiring the operation parameters under the non-stop defrosting mode operation;
the judging module is used for judging whether the operation of the non-stop defrosting mode is abnormal or not according to the operation parameters;
the second cut-in module is used for cutting in the air conditioner defrosting to operate a reverse defrosting mode when the abnormity occurs, and the operation of the reverse defrosting mode comprises the following steps: the refrigerant main loop operates a refrigeration cycle, and the defrosting bypass branch is not utilized.
11. An air conditioner, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-9.
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