CN110260466B - Air conditioner defrosting control method and device - Google Patents
Air conditioner defrosting control method and device Download PDFInfo
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- CN110260466B CN110260466B CN201910512614.0A CN201910512614A CN110260466B CN 110260466 B CN110260466 B CN 110260466B CN 201910512614 A CN201910512614 A CN 201910512614A CN 110260466 B CN110260466 B CN 110260466B
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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
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides an air conditioner defrosting control method and device, wherein the method comprises the following steps: determining whether the air conditioning unit meets a preset defrosting entering condition; acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met; determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition; and under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group for defrosting mode. By means of the scheme, the phenomenon that the existing air conditioning unit needs to be defrosted only by determining the defrosting requirement through some operation parameters is avoided, the technical effect that whether the air conditioner needs to enter a defrosting mode is accurately and efficiently determined, and the energy efficiency of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to an air conditioner defrosting control method and device.
Background
When the air conditioner actually operates, when the air conditioner heats and operates under certain environmental parameters, the heat exchanger of the unit can frost, and the occurrence of the frosting condition can influence the heat exchange efficiency of the air conditioner, so that the heating capacity of the air conditioner is reduced, and the comfort of a user is low. When the frosting reaches a certain degree, the flow direction of the refrigerant of the unit is required to be adjusted through the four-way valve so as to carry out defrosting treatment on the heat exchanger.
However, the existing air conditioner generally judges whether the unit frosts according to the ambient temperature, the low pressure and some empirical parameters, and because the air conditioner has more uncertain factors in the actual engineering, the existing frosting judgment mode cannot accurately and efficiently determine whether the air conditioner frosts, so that the air conditioner has the phenomenon of frostless defrosting, the comfort level of a user is affected, and meanwhile, the energy waste is also caused.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a defrosting control method and device for an air conditioner, which aim to accurately and efficiently determine whether the air conditioner frosts.
In one aspect, an air conditioner defrosting control method is provided, and includes:
determining whether the air conditioning unit meets a preset defrosting entering condition;
acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met;
determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition;
and under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group for defrosting mode.
In one embodiment, the acquiring temperature data inside the heat exchanger includes:
and detecting to obtain the temperature data inside the heat exchanger through a temperature sensing device arranged inside the heat exchanger.
In one embodiment, determining whether the temperature data inside the heat exchanger meets a preset trigger condition comprises:
taking the time point which is determined to meet the preset defrosting entering condition as a first time point;
acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value;
acquiring a lowest temperature value of the interior of the heat exchanger before the first time point for a preset time period, and taking the lowest temperature value as a second temperature value;
determining whether a difference between the first temperature value and the second temperature value exceeds a preset threshold;
and under the condition that the temperature data exceeds the preset threshold value, determining that the temperature data in the heat exchanger meets a preset trigger condition.
In one embodiment, in the case that a defrosting process exists after the air conditioning unit is started, the predetermined time period is an operation time period from the end of one defrosting to the start of the next defrosting; and under the condition that the defrosting process does not exist after the air conditioning unit is started, the preset time length is a preset time length value.
In one embodiment, the determining whether the air conditioning unit meets a preset defrosting entry condition comprises the following steps:
obtaining operation parameters of the air conditioning unit, wherein the operation parameters comprise at least one of the following: ambient temperature, coil temperature and continuous run length;
and determining whether the air conditioning unit meets a preset defrosting entering condition or not according to the operation parameters.
In another aspect, an air conditioner defrosting control apparatus is provided, including:
the first determining module is used for determining whether the air conditioning unit meets a preset defrosting entering condition;
the acquisition module is used for acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met;
the second determining module is used for determining whether the temperature data in the heat exchanger meets a preset triggering condition or not;
and the control module is used for controlling the air conditioner to enter the group to carry out a defrosting mode under the condition that the preset triggering condition is determined to be met.
In one embodiment, the obtaining module is specifically configured to obtain temperature data inside the heat exchanger through detection by a temperature sensing device disposed inside the heat exchanger.
In one embodiment, the second determining module comprises:
the generating unit is used for taking the time point which is determined to meet the preset defrosting entering condition as a first time point;
the first acquiring unit is used for acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value;
the second acquiring unit is used for acquiring a lowest temperature value of the heat exchanger as a second temperature value, wherein the lowest temperature value is a preset time before the first time point;
a first determining unit, configured to determine whether a difference between the first temperature value and the second temperature value exceeds a preset threshold;
and the second determining unit is used for determining that the temperature data inside the heat exchanger meets a preset triggering condition under the condition that the preset threshold value is determined to be exceeded.
In still another aspect, there is provided an air conditioner including: the air conditioner defrosting control device is described above.
In yet another aspect, a network device is provided, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method when executing the computer program:
determining whether the air conditioning unit meets a preset defrosting entering condition;
acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met;
determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition;
and under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group for defrosting mode.
In yet another aspect, a non-transitory computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, performs the steps of the method of:
determining whether the air conditioning unit meets a preset defrosting entering condition;
acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met;
determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition;
and under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group for defrosting mode.
In the above embodiment, under the condition that the air conditioner is determined to meet the defrosting condition, the judgment on the internal temperature of the heat exchanger is added, and the defrosting is determined to be needed only under the condition that the temperature change in the heat exchanger meets the preset condition, so that the phenomenon of 'frostless defrosting' caused by determining whether the defrosting is needed only through some operation parameters of the air conditioning unit is avoided, the technical effect of accurately and efficiently determining whether the air conditioner needs to enter the defrosting mode is achieved, and the effect of the air conditioner is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method of a defrosting control method of an air conditioner according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an internal temperature sensing device of a heat exchanger according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the temperature change inside a heat exchanger during frosting according to an embodiment of the present invention;
fig. 4 is a block diagram of an air conditioner defrosting control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In order to solve the problem that the existing defrosting condition is easy to generate a frostless defrosting phenomenon, the air conditioner defrosting control method is provided in the embodiment, whether defrosting is needed or not is determined by combining temperature data in the heat exchanger, and the frostless defrosting condition can be avoided. Specifically, in this example, an air conditioner defrosting control method is provided, as shown in fig. 1, may include the following steps:
step 101: determining whether the air conditioning unit meets a preset defrosting entering condition;
specifically, the defrosting condition may be set according to an operation parameter of the air conditioner, that is, determining whether the air conditioning unit meets a preset defrosting entering condition may include: obtaining an operating parameter of the air conditioning unit, wherein the operating parameter may include but is not limited to at least one of the following: ambient temperature, coil temperature and continuous run length; and determining whether the air conditioning unit meets a preset defrosting entering condition or not according to the operation parameters.
The operation parameters may further include empirical parameters, for example, values of comparison values of the ambient temperature, the coil temperature, and the continuous operation time period, which may be set empirically. For example, if the indoor coil temperature is less than 48 degrees and it is desired to enter the defrost mode, the value of 48 degrees is an empirical parameter that the designer or equipment developer has empirically determined, rather than actually measured.
For example, the defrosting condition may be:
1) when the heating mode is started for about 5 minutes, the maximum difference value between the outdoor unit coil temperature and the indoor environment temperature within three minutes is larger than a preset value;
2) when the difference between the indoor coil temperature and the indoor ambient temperature is reduced by more than 5 degrees and lasts for more than 3 minutes;
3) the accumulated working time of the compressor exceeds 45 minutes;
4) the indoor coil temperature is less than 48 degrees.
If four or part of the conditions are simultaneously satisfied, the preset defrosting entry condition can be considered to be satisfied.
It should be noted, however, that the above-listed conditions for entering defrosting are only an exemplary description, and other conditions for entering defrosting can be set according to actual needs and situations when the conditions are actually implemented.
Step 102: acquiring temperature data inside the heat exchanger under the condition that the preset defrosting entering condition is met;
the temperature data can be detected by a temperature sensing device arranged in the heat exchanger, and particularly, when the temperature data is realized, the system can continuously detect and record the temperature value of the inner side of the heat exchanger when the air conditioner is in heating operation.
Step 103: determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition;
step 104: and under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group for defrosting mode.
In step 103, determining whether the change of the temperature data inside the heat exchanger meets a preset trigger condition may include:
s1: taking the time point which is determined to meet the preset defrosting entering condition as a first time point;
s2: acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value;
s4: acquiring a lowest temperature value of the interior of the heat exchanger before the first time point for a preset time period, and taking the lowest temperature value as a second temperature value;
s5: determining whether a difference between the first temperature value and the second temperature value exceeds a preset threshold;
s6: and under the condition that the preset threshold value is determined to be exceeded, determining that the change of the temperature data inside the heat exchanger meets a preset trigger condition.
For example: when the unit judges that defrosting needs to be carried out, the current time is taken as T, the currently detected temperature value of the inner side of the heat exchanger is T1, and the lowest temperature T2 detected by the temperature sensing device in A minutes before T is screened out. And determining whether T1-T2 is greater than or equal to T3, if so, determining that the unit is frosted, and if not, determining that the unit is not frosted and not defrosting. T3 may be related to environmental temperature, unit load, unit operating condition, and other factors, and may be determined through experiments. For example, T3 can take on a value of 10-20 deg.C.
When the defrosting is implemented, under the condition that a defrosting process exists after the air conditioning unit is started, the preset time length can be the running time length from the end of one defrosting to the start of the next defrosting; in the case that there is no defrosting process after the air conditioning unit is turned on, the predetermined time period may be a preset time period value. For example: when the unit is operated for heating for the first time, the preset time A is 60min, then if the unit has a defrosting process, the time t1 from the end of defrosting to the operation of starting the unit for another time is recorded, A is t1, and if the unit does not have the defrosting process, A is 60 min.
In the above example, under the condition that the air conditioner meets the defrosting condition, the judgment on the internal temperature of the heat exchanger is added, and the defrosting is determined to be needed only under the condition that the temperature change in the heat exchanger meets the preset condition, so that the phenomenon of 'frostless defrosting' caused by the fact that whether the defrosting is needed or not is determined only through some operation parameters of the air conditioning unit in the prior art is avoided, the technical effect of accurately and efficiently determining whether the air conditioner needs to enter the defrosting mode is achieved, and the effect of the air conditioner is improved.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
The phenomenon of 'frostless defrosting' can occur in the existing method for judging whether the air conditioner frosts, so that the comfort level of a user is low when the air conditioner operates in heating.
For this reason, in this example, a method for determining whether frosting is generated is provided, and whether frosting is generated in the air conditioning unit is determined by detecting the internal temperature of the air conditioning heat exchanger.
Specifically, as shown in fig. 2, a temperature sensing device is disposed inside a heat exchanger of the air conditioner external unit, wherein the inside of the heat exchanger refers to a direction in which the heat exchanger faces the inside of the casing as shown in fig. 2. The temperature sensing device can detect the internal temperature of the heat exchanger and feed detected temperature information back to the unit. Wherein, the temperature sensing device can be arranged at the position where frost is most likely to be formed, so that whether frost is formed can be determined more effectively.
Specifically, when the temperature sensing device is actually arranged, one temperature sensing bulb can be arranged, a plurality of temperature sensing bulbs can also be arranged at intervals, if the plurality of temperature sensing bulbs are arranged, the temperature inside the heat exchanger can be determined by taking the average value of the plurality of temperature sensing bulbs, and therefore the determined temperature inside the heat exchanger can be ensured to be more accurate.
However, it should be noted that the above-mentioned setting manner of the temperature sensing device is only an exemplary description, and other setting manners may be selected according to needs in practical implementation, which is not limited in the present application.
When the air conditioner is stably operated during heating, if the heat exchanger is not frosted, the low pressure of the system is less in fluctuation, the temperature of a copper pipe in the heat exchanger cannot be greatly fluctuated, therefore, the heat exchange quantity is stable, and the temperature fluctuation detected by the temperature sensing device is less.
When the air conditioner is in heating operation, after the heat exchanger begins to frost, the temperature of the copper pipe at the frosting position is reduced due to the fact that the heat absorption capacity of the heat exchanger is reduced, the temperature detected by the temperature sensing device on the inner side of the heat exchanger is reduced, the low pressure of the system is continuously reduced due to the fact that the frost layer is gradually thickened, and the temperature value on the inner side of the detected heat exchanger is also continuously reduced. When the thickness of the frost layer reaches a certain point, the air at the outer side is not easy to pass through the heat exchanger due to the blocking of the frost layer, the heat absorption ratio of the air detected by the temperature sensing device through the heat exchanger is gradually reduced, and the temperature of the temperature sensing device tends to rise. Through multiple groups of experiments, the curve relation of the heating capacity of the air conditioner along with the temperature value detected by the temperature sensing device arranged on the inner side of the heat exchanger in the frosting process is shown in figure 3.
If the heat exchanger frosts, the process that the temperature of the inner side of the heat exchanger is gradually reduced and then gradually increased inevitably occurs, and after testing, the temperature difference between the lowest temperature point and the temperature of the inner side of the heat exchanger detected when the system is defrosted can reach 10-20 ℃, so that the condition can be used as one of necessary conditions for whether the unit is frosted or not.
Specifically, based on the above principle, whether the defrosting state needs to be entered or not can be determined as follows to avoid the phenomenon of "no defrosting" from occurring:
s1: when the air conditioner is in heating operation, the system continuously detects and records the temperature value of the inner side of the heat exchanger;
s2: according to the existing control method, when the unit judges that defrosting needs to be started, the current time is taken as T, the currently detected temperature value of the inner side of the heat exchanger is T1, and the lowest temperature T2 detected by the temperature sensing device in A minutes before T is screened out, wherein when the unit is operated for heating for the first time, A is taken for 60min, then if the defrosting process of the unit exists, the time T1 from the end of defrosting to the operation of another defrosting starting unit is recorded for one time, A is taken for T1, and if the unit does not have the defrosting process, A is taken for 60 min.
S3: and determining whether T1-T2 is greater than or equal to T3, if so, determining that the unit is frosted, and if not, determining that the unit is not frosted and not defrosting. T3 may be related to environmental temperature, unit load, unit operating condition, and other factors, and may be determined through experiments. For example, T3 can take on a value of 10-20 deg.C.
For example, the existing control method may be:
for example, the defrosting condition may be:
1) when the heating mode is started for about 5 minutes, the maximum difference value between the outdoor unit coil temperature and the indoor environment temperature within three minutes is larger than a preset value;
2) when the difference between the indoor coil temperature and the indoor ambient temperature is reduced by more than 5 degrees and lasts for more than 3 minutes;
3) the accumulated working time of the compressor exceeds 45 minutes;
4) the indoor coil temperature is less than 48 degrees.
If these 4 conditions are simultaneously met, defrosting is started.
Based on the same inventive concept, the embodiment of the invention also provides an air conditioner defrosting control device, which is described in the following embodiments. Because the principle of the air conditioner defrosting control device for solving the problems is similar to that of the air conditioner defrosting control method, the implementation of the air conditioner defrosting control device can refer to the implementation of the air conditioner defrosting control method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 4 is a block diagram of a structure of an air conditioner defrosting control device according to an embodiment of the present invention, and as shown in fig. 4, the air conditioner defrosting control device may include: a first determining module 401, an obtaining module 402, a second determining module 403, and a control module 404, and the structure thereof will be described below.
A first determining module 401, configured to determine whether the air conditioning unit meets a preset defrosting entry condition;
an obtaining module 402, configured to obtain temperature data inside the heat exchanger when it is determined that the preset defrosting entry condition is met;
a second determining module 403, configured to determine whether a change in temperature data inside the heat exchanger meets a preset trigger condition;
and the control module 404 is configured to control the air conditioners to enter a defrosting mode when it is determined that the preset trigger condition is met.
In an embodiment, the obtaining module 402 may specifically obtain the temperature data inside the heat exchanger by detecting through a temperature sensing device disposed inside the heat exchanger.
In an embodiment, the second determining module 403 may specifically determine a time point at which the preset defrosting entry condition is satisfied as a first time point; acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value; acquiring a lowest temperature value of the interior of the heat exchanger before the first time point for a preset time period, and taking the lowest temperature value as a second temperature value; determining whether a difference between the first temperature value and the second temperature value exceeds a preset threshold; and under the condition that the preset threshold value is determined to be exceeded, determining that the change of the temperature data inside the heat exchanger meets a preset trigger condition.
In one embodiment, in the case that a defrosting process exists after the air conditioning unit is started, the predetermined time period is an operation time period from the end of one defrosting to the start of the next defrosting; and under the condition that the defrosting process does not exist after the air conditioning unit is started, the preset time length is a preset time length value.
In an embodiment, the first determining module 401 may specifically obtain an operating parameter of the air conditioning unit, where the operating parameter includes at least one of: ambient temperature, coil temperature and continuous run length; and determining whether the air conditioning unit meets a preset defrosting entering condition or not according to the operation parameters.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: under the condition that the air conditioner meets the defrosting condition, the judgment on the internal temperature of the heat exchanger is added, and the defrosting is determined to be needed only under the condition that the temperature change in the heat exchanger meets the preset condition, so that the phenomenon of 'frostless defrosting' caused by the fact that whether defrosting is needed or not is determined only through some running parameters of an air conditioning unit in the prior art is avoided, the technical effect of accurately and efficiently determining whether the air conditioner needs to enter a defrosting mode is achieved, and the effect of the air conditioner is improved.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (7)
1. An air conditioner defrosting control method is characterized by comprising the following steps:
determining whether the air conditioning unit meets a preset defrosting entering condition;
acquiring temperature data inside the outdoor heat exchanger under the condition that the preset defrosting entering condition is met;
determining whether the change of the temperature data in the heat exchanger meets a preset trigger condition;
under the condition that the preset triggering condition is determined to be met, controlling the air conditioners to enter the group to perform a defrosting mode; the temperature data is acquired by a temperature sensing device arranged on the inner side of the heat exchanger, the inner side of the heat exchanger refers to the direction of the heat exchanger facing the inside of the shell, and the temperature sensing device keeps a preset distance from the shell of the heat exchanger;
wherein, whether the change of the temperature data in the heat exchanger meets the preset trigger condition or not is determined, and the method comprises the following steps:
taking the time point which is determined to meet the preset defrosting entering condition as a first time point;
acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value;
acquiring a lowest temperature value of the interior of the heat exchanger before the first time point for a preset time period, and taking the lowest temperature value as a second temperature value;
determining whether a difference between the first temperature value and the second temperature value exceeds a preset threshold;
determining that the change of the temperature data inside the heat exchanger meets a preset trigger condition under the condition that the preset threshold value is determined to be exceeded;
and in the frosting process of the heat exchanger, the temperature data in the heat exchanger is in a trend of gradually decreasing and then gradually increasing.
2. The method according to claim 1, wherein in the case that a defrosting process exists after the air conditioning unit is started, the predetermined time period is an operation time period from the end of one defrosting to the start of the next defrosting; and under the condition that the defrosting process does not exist after the air conditioning unit is started, the preset time length is a preset time length value.
3. The method according to any one of claims 1 to 2, wherein determining whether the air conditioning unit meets a preset defrosting entry condition comprises:
obtaining operation parameters of the air conditioning unit, wherein the operation parameters comprise at least one of the following: ambient temperature, coil temperature and continuous run length;
and determining whether the air conditioning unit meets a preset defrosting entering condition or not according to the operation parameters.
4. An air conditioner defrosting control device is characterized by comprising:
the first determining module is used for determining whether the air conditioning unit meets a preset defrosting entering condition;
the acquisition module is used for acquiring temperature data inside the outdoor heat exchanger under the condition that the preset defrosting entering condition is met;
the second determining module is used for determining whether the change of the temperature data in the heat exchanger meets a preset triggering condition or not;
the control module is used for controlling the air conditioners to enter the group to carry out a defrosting mode under the condition that the preset triggering condition is determined to be met; the temperature data is acquired by a temperature sensing device arranged on the inner side of the heat exchanger, and the inner side of the heat exchanger refers to the direction of the heat exchanger facing the inside of the shell; the temperature sensing device keeps a preset distance from the heat exchanger shell;
the second determining module includes:
the generating unit is used for taking the time point which is determined to meet the preset defrosting entering condition as a first time point;
the first acquiring unit is used for acquiring a temperature value of the interior of the heat exchanger at a first time point as a first temperature value;
the second acquiring unit is used for acquiring a lowest temperature value of the heat exchanger as a second temperature value, wherein the lowest temperature value is a preset time before the first time point;
a first determining unit, configured to determine whether a difference between the first temperature value and the second temperature value exceeds a preset threshold;
the second determining unit is used for determining that the change of the temperature data inside the heat exchanger meets a preset trigger condition under the condition that the preset threshold value is determined to be exceeded;
and in the frosting process of the heat exchanger, the temperature data in the heat exchanger is in a trend of gradually decreasing and then gradually increasing.
5. An air conditioner, comprising: the air conditioning defrosting control unit of claim 4.
6. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 3 when executing the computer program.
7. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 3.
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Families Citing this family (6)
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| CN110736202B (en) * | 2019-09-25 | 2022-04-19 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110925954A (en) * | 2019-11-15 | 2020-03-27 | 浙江中广电器股份有限公司 | Defrosting mode starting or not judging method, processor, air conditioner and heat pump water heater |
| CN111174371B (en) * | 2019-12-31 | 2021-03-19 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and air conditioner |
| CN112161378B (en) * | 2020-09-07 | 2022-06-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Outdoor unit defrosting control method and device and air conditioner |
| CN112413819A (en) * | 2020-10-22 | 2021-02-26 | 珠海格力电器股份有限公司 | Defrosting control method, controller, air conditioner, storage medium and terminal |
| CN114135976A (en) * | 2021-11-22 | 2022-03-04 | 珠海格力电器股份有限公司 | Method, device and equipment for detecting entering defrosting and air conditioning unit |
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