CN113531776A - Defrosting control method and device for air conditioning unit, storage medium and air conditioning unit - Google Patents
Defrosting control method and device for air conditioning unit, storage medium and air conditioning unit Download PDFInfo
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- CN113531776A CN113531776A CN202110844010.3A CN202110844010A CN113531776A CN 113531776 A CN113531776 A CN 113531776A CN 202110844010 A CN202110844010 A CN 202110844010A CN 113531776 A CN113531776 A CN 113531776A
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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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Abstract
The invention provides a defrosting control method and device for an air conditioning unit, a storage medium and the air conditioning unit, wherein the air conditioning unit comprises more than two systems, the more than two systems share a fan, and the defrosting control method comprises the following steps: when the system needs defrosting, controlling the system to enter a defrosting mode and executing a first defrosting control logic; and when other systems in the more than two systems need defrosting and the system does not need defrosting, controlling the system to enter a defrosting mode and executing a second defrosting control logic. The scheme provided by the invention can prevent the problem that the heating capacity of the unit is greatly reduced, and simultaneously reduces the starting and stopping times of the compressor.
Description
Technical Field
The invention relates to the field of control, in particular to a defrosting control method and device for an air conditioning unit, a storage medium and the air conditioning unit.
Background
When the fans used by the systems in the unit of the multiple systems are independently controlled, the systems can independently enter or exit defrosting control. However, when the units of the multiple systems share the fan, and any system has a defrosting requirement, the multiple systems need to be defrosted simultaneously. In this case, the heating capacity of the unit is greatly reduced.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a defrosting control method and device for an air conditioning unit, a storage medium and the air conditioning unit so as to solve the problem that in the prior art, when a fan is shared by units of a plurality of systems, the plurality of systems need to be defrosted simultaneously, so that the heating capacity of the units is greatly reduced.
The invention provides a defrosting control method of an air conditioning unit, wherein the air conditioning unit comprises more than two systems, the more than two systems share a fan, and the defrosting control method comprises the following steps: when the system needs defrosting, controlling the system to enter a defrosting mode and executing a first defrosting control logic; and when other systems in the more than two systems need defrosting and the system does not need defrosting, controlling the system to enter a defrosting mode and executing a second defrosting control logic.
Optionally, a first defrost control logic is executed comprising: controlling a compressor of the system to operate according to a first preset frequency; and/or, executing second frost control logic comprising: controlling a compressor of the system to operate according to a second preset frequency; wherein the first preset frequency is greater than the second preset frequency; and when the first defrosting control logic or the second defrosting control logic is executed, the fan shared by a plurality of systems is closed, and the four-way valve is controlled to change direction.
Optionally, executing the second frost control logic further comprises: before controlling a compressor of the system to operate according to a second preset frequency, judging whether the system meets a condition of quitting defrosting; when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
Optionally, when the other system of the two or more systems needs defrosting, and the system does not need defrosting, the method further includes: when the system needing defrosting finishes defrosting, the system is controlled to exit the defrosting mode.
In another aspect, the present invention provides a defrosting control device for an air conditioning unit, where the air conditioning unit includes two or more systems, and the two or more systems share a fan, the defrosting control device includes: the first control unit is used for controlling the system to enter a defrosting mode and executing a first defrosting control logic when the system needs defrosting; and the second control unit is used for controlling the affiliated system to enter a defrosting mode and executing a second defrosting control logic when other systems in the more than two systems need defrosting and the affiliated system does not need defrosting.
Optionally, a first defrost control logic is executed comprising: controlling a compressor of the system to operate according to a first preset frequency; and/or, executing second frost control logic comprising: controlling a compressor of the system to operate according to a second preset frequency; wherein the first preset frequency is greater than the second preset frequency; and when the first defrosting control logic or the second defrosting control logic is executed, the fan shared by a plurality of systems is closed, and the four-way valve is controlled to change direction.
Optionally, executing the second frost control logic further comprises: before controlling a compressor of the system to operate according to a second preset frequency, judging whether the system meets a condition of quitting defrosting; when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
Optionally, the method further comprises: and the third control unit is used for controlling the system to exit the defrosting mode when other systems in the more than two systems need defrosting and the system does not need defrosting and the system needing defrosting finishes defrosting.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
In yet another aspect, the present invention provides an air conditioning unit, including a processor, a memory, and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the steps of any of the methods described above.
The invention further provides an air conditioning unit, which comprises the defrosting control device of the air conditioning unit.
According to the technical scheme of the invention, when the unit with more than two systems shares the fan, the more than two systems carry out defrosting together. The unit frosting conditions of different systems are distinguished, defrosting is carried out according to needs, a frosted system is enabled to be quickly defrosted, a unit with little frost or no frost runs at a low frequency for waiting after meeting a defrosting exit condition, and after defrosting is finished, frequency is quickly increased for heating. The defrosting device can quickly defrost, the problem that the heating capacity of the unit is greatly reduced is solved, the number of starting and stopping times of the compressor is reduced, and the service life of the unit is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, 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 schematic method diagram of an embodiment of a defrosting control method of an air conditioning unit provided by the invention;
FIG. 2 is a schematic method diagram illustrating an embodiment of a defrosting control method for an air conditioning unit according to the present invention;
fig. 3 is a block diagram of an embodiment of a defrosting control device of an air conditioning unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a defrosting control method of an air conditioning unit. The air conditioning unit comprises more than two systems, and the more than two systems share the fan. The defrosting control method is implemented in each of the systems.
Fig. 1 is a method schematic diagram of an embodiment of a defrosting control method of an air conditioning unit provided by the invention.
As shown in fig. 1, according to an embodiment of the present invention, the defrosting control method includes at least step S110 and step S120.
And step S110, when the system needs defrosting, controlling the system to enter a defrosting mode and executing a first defrosting control logic.
Specifically, when the air conditioning unit operates in the heating mode, when the system meets a defrosting condition (for example, the heating operation time reaches a first preset time, and the temperature of the outdoor heat exchanger is less than a first preset temperature value), the system needs to be defrosted, the system is controlled to enter the defrosting mode, and a first defrosting control logic is executed. And if the other systems in the multiple systems do not need defrosting, entering a defrosting mode and executing a second defrosting control logic.
And step S120, when other systems in the more than two systems need defrosting and the affiliated system does not need defrosting, controlling the affiliated system to enter a defrosting mode and executing a second defrosting control logic.
Specifically, when other systems of the two or more systems meet a defrosting condition (for example, the heating operation time reaches a first preset time, and the temperature of the outdoor heat exchanger is less than a first preset temperature value), and the system does not meet the defrosting condition, that is, the system does not need to be defrosted, the system and the other systems are controlled to simultaneously enter a defrosting mode, and a second defrosting control logic is executed. And the other systems enter a defrosting mode and execute a first defrosting control logic because the other systems need to be defrosted.
That is to say, after the multi-system units sharing the fan are powered on and started, if any system meets the defrosting condition and needs to enter the defrosting operation, all the systems execute the defrosting control together. The system which needs to be defrosted executes a first defrosting control logic, and the system which does not need to be defrosted executes a second defrosting control logic. And when the first defrosting control logic or the second defrosting control logic is executed, the fans shared by a plurality of systems are closed, and the four-way valve is controlled to change direction so as to switch from a heating mode to a cooling mode, thereby defrosting. When the fan is turned on during defrosting, heat is lost, and defrosting is slow, so that the fan shared by more than two systems is turned off.
In one embodiment, a first defrosting control logic is executed, comprising: controlling a compressor of the system to operate according to a first preset frequency; executing second frost control logic comprising: and controlling the compressor of the system to operate according to a second preset frequency. Wherein the first preset frequency is greater than the second preset frequency. The first preset frequency may specifically be a preset defrosting frequency, that is, a preset compressor operating frequency during defrosting. The second preset frequency may be a minimum frequency of the compressor, that is, a minimum operating frequency that can be reached by the compressor.
That is, a system for defrosting is required to perform a higher frequency operation for defrosting, and a system (compressor) for defrosting is not required to operate at a lower frequency, thereby preventing a heating capacity of a unit from being greatly reduced.
Preferably, when the second defrosting control logic is executed, before the compressor of the system is controlled to operate according to a second preset frequency, whether the system meets the condition of quitting defrosting is judged; when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
That is, the defrosting system is not required, if the defrosting exit condition is met (for example, the defrosting time reaches the second preset time, and the temperature of the outdoor heat exchanger is greater than the second preset temperature value), the frequency is decreased to the second preset frequency for operation, and if the defrosting exit condition is not met, the first defrosting logic is executed, that is, the compressor operates according to the first preset frequency, and until the defrosting exit condition is met, the frequency is decreased to the second preset frequency for operation.
Further, the method further comprises: when other systems in the more than two systems need defrosting and the system does not need defrosting, and when the system needing defrosting finishes defrosting, the system is controlled to exit the defrosting mode. That is, when the system that needs to perform defrosting completes defrosting, all systems exit the defrosting mode.
In order to clearly illustrate the technical solution of the present invention, an execution flow of the defrosting control method of the air conditioning unit provided by the present invention is described below with a specific embodiment.
Fig. 2 is a schematic method diagram of a defrosting control method for an air conditioning unit according to an embodiment of the present invention. As shown in fig. 2, after the unit is powered on and started, if there is a system which needs to enter into defrosting to meet the defrosting condition, all the systems execute defrosting control together. Under the condition that the current system needs to be defrosted, carry out the defrosting control, carry out first defrosting control logic promptly, under the condition that the current system need not be defrosted, according to minimum frequency operation, the system that needs to be defrosted is defrosted and is accomplished the back, and all systems withdraw from the defrosting, and the compressor carries out the raising frequency action according to temperature control fast, resumes the heating capacity operation.
The technical solution of the present invention is further described below by specific examples.
In the case where the air conditioning unit is a unit in which two systems share a fan, the air conditioning unit includes, for example, a system one and a system two. When the first system needs defrosting, the second system is judged whether defrosting is needed. And if the second system also needs defrosting, the two systems simultaneously enter defrosting control (execute a first defrosting control logic), a shared fan is closed in the defrosting process, and four-way valves of the two systems execute reversing action.
If the system I needs defrosting, the system II does not need defrosting, and after the two systems simultaneously enter a defrosting mode, the system I executes defrosting control (executes a first defrosting control logic and runs according to a first preset frequency). In the defrosting process, judging whether the second system meets a defrosting exit condition, if so, executing a second defrosting control logic by the second system, reducing the frequency to a second preset frequency (such as a minimum frequency) for operation, and after the first system finishes defrosting (meets the defrosting exit condition), simultaneously exiting the defrosting by the two systems; in the defrosting process, if the second system does not meet the defrosting exit condition, the second system also executes defrosting control (executes the first defrosting control logic and runs according to the first preset frequency) until the defrosting exit condition is met, then the second system reduces the frequency to a second preset frequency (such as the minimum frequency) to run, and after the first system finishes defrosting (meets the defrosting exit condition), the two systems simultaneously exit defrosting. In the defrosting process, the shared fan is closed, and the four-way valves of the two systems execute reversing actions.
When the air conditioning unit is a unit with a plurality of systems (including three or more systems) sharing a fan, when any system needs defrosting, whether other systems need defrosting is judged. If systems needing defrosting exist in other systems, the systems needing defrosting simultaneously enter defrosting control to execute a first defrosting control logic, a common fan is closed in the defrosting process, and four-way valves of all the systems execute reversing action.
When any system needs defrosting, a system which does not need defrosting exists, and after all the systems simultaneously enter defrosting control, the system which needs defrosting executes the defrosting control. Judging whether other systems which do not need to be defrosted meet defrosting exit conditions or not, if the other systems which do not need to be defrosted meet the defrosting exit conditions, reducing the frequency of the systems which do not need to be defrosted (do not meet the defrosting conditions) to the minimum frequency for operation, and after the systems which need to be defrosted finish defrosting, simultaneously exiting defrosting by all the systems; if the system needing defrosting does not meet the defrosting exit condition in the defrosting process, other systems execute the same action according to defrosting (namely, execute a first defrosting control logic, and the compressor operates according to a first preset frequency), and execute a second defrosting control logic until the defrosting exit condition is met, and reduce the frequency to a second preset frequency (such as a minimum frequency) to operate, and after the system needing defrosting finishes defrosting, all the systems simultaneously execute defrosting exit. In the defrosting process, the shared fan is closed, and four-way valves of all systems perform reversing actions.
In the related technical scheme, multiple system units of the fan are shared, when any system has a defrosting requirement, the system needing defrosting enters defrosting control, and other systems wait in a standby mode. And after the frosted system finishes frosting, the system quits the defrosting control, and other standby systems judge whether to be restarted according to the temperature. In this case, since there is a minimum shutdown time for the compressor to be turned on again after shutdown, and a certain time is also required for compressor initialization when the compressor is turned on again, the heating capacity of the unit is significantly reduced in this time period.
According to the embodiment of the invention, in the defrosting process, the systems meeting or not meeting the defrosting condition only carry out the frequency raising and lowering operation without stopping. After all the systems quit defrosting, the compressor quickly executes frequency increasing action according to temperature control, the heating capacity operation is recovered, the initial holding stage that the compressor is restarted after standby can be shortened, and quick heating frequency increasing is realized.
The invention provides a defrosting control device of an air conditioning unit, wherein the air conditioning unit comprises more than two systems, and the more than two systems share a fan. The defrosting control method is implemented in each of the systems.
Fig. 3 is a schematic structural diagram of an embodiment of a defrosting control device of an air conditioning unit according to the present invention. As shown in fig. 3, the defrosting control apparatus 100 of the air conditioning unit includes a first control unit 110 and a second control unit 120.
The first control unit 110 is configured to control the belonging system to enter a defrosting mode and execute a first defrosting control logic when the belonging system needs defrosting.
Specifically, when the air conditioning unit operates in the heating mode, and when the system meets a defrosting condition (for example, the heating operation time reaches a first preset time, and the temperature of the outdoor heat exchanger is less than a first preset temperature value), that is, the system needs to be defrosted, the first control unit 110 controls the system to enter the defrosting mode, and executes a first defrosting control logic. And if the other systems in the multiple systems do not need defrosting, entering a defrosting mode and executing a second defrosting control logic.
The second control unit 120 is configured to, when other systems of the two or more systems need to be defrosted and the belonging system does not need to be defrosted, control the belonging system to enter a defrosting mode and execute a second defrosting control logic.
Specifically, when the other systems of the two or more systems satisfy the defrosting condition (for example, the heating operation time reaches a first preset time, and the temperature of the outdoor heat exchanger is less than a first preset temperature value), and the system does not satisfy the defrosting condition, that is, the system does not need to be defrosted, the second control unit 120 controls the system to enter the defrosting mode with the other systems at the same time, and executes a second defrosting control logic. And the other systems enter a defrosting mode and execute a first defrosting control logic because the other systems need to be defrosted.
That is to say, after the multi-system units sharing the fan are powered on and started, if any system meets the defrosting condition and needs to enter the defrosting operation, all the systems execute the defrosting control together. The system which needs to be defrosted executes a first defrosting control logic, and the system which does not need to be defrosted executes a second defrosting control logic. And when the first defrosting control logic or the second defrosting control logic is executed, the fans shared by a plurality of systems are closed, and the four-way valve is controlled to change direction so as to switch from a heating mode to a cooling mode, thereby defrosting. When the fan is turned on during defrosting, heat is lost, and defrosting is slow, so that the fan shared by more than two systems is turned off.
In one embodiment, the first control unit 110 executes a first defrosting control logic, including: controlling a compressor of the system to operate according to a first preset frequency; the second control unit 120 executes second frost control logic including: and controlling the compressor of the system to operate according to a second preset frequency. Wherein the first preset frequency is greater than the second preset frequency. The first preset frequency may specifically be a preset defrosting frequency, that is, a preset compressor operating frequency during defrosting. The second preset frequency may be a minimum frequency of the compressor, that is, a minimum operating frequency that can be reached by the compressor.
That is, a system for defrosting is required to perform a higher frequency operation for defrosting, and a system (compressor) for defrosting is not required to operate at a lower frequency, thereby preventing a heating capacity of a unit from being greatly reduced.
Preferably, when executing the second defrosting control logic, the second control unit 120 determines whether the system meets the condition of exiting defrosting before controlling the compressor of the system to operate according to the second preset frequency; when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
That is, the defrosting system is not required, if the defrosting exit condition is met (for example, the defrosting time reaches the second preset time, and the temperature of the outdoor heat exchanger is greater than the second preset temperature value), the frequency is decreased to the second preset frequency for operation, and if the defrosting exit condition is not met, the first defrosting logic is executed, that is, the compressor operates according to the first preset frequency, and until the defrosting exit condition is met, the frequency is decreased to the second preset frequency for operation.
Further, the device 100 further comprises a third control unit (not shown).
And the third control unit is used for controlling the system to exit the defrosting mode when other systems in the more than two systems need defrosting and the system does not need defrosting and the system needing defrosting finishes defrosting. That is, when the system that needs to perform defrosting completes defrosting, all systems exit the defrosting mode.
The invention also provides a storage medium corresponding to the defrosting control method of the air conditioning unit, and a computer program is stored on the storage medium, and when the program is executed by a processor, the program realizes the steps of any one of the methods.
The invention also provides an air conditioning unit corresponding to the defrosting control method of the air conditioning unit, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.
The invention also provides an air conditioning unit corresponding to the defrosting control device of the air conditioning unit, which comprises the defrosting control device of any one of the air conditioning units.
According to the scheme provided by the invention, when the unit with more than two systems shares the fan, the more than two systems carry out defrosting together, defrosting is carried out as required by distinguishing the frosting conditions of the units of different systems, so that the frosted system carries out defrosting quickly, the unit with little or no frost runs at low frequency for waiting after meeting the defrosting exit condition, and heating is carried out at high frequency after defrosting is finished. The defrosting device can quickly defrost, the problem that the heating capacity of the unit is greatly reduced is solved, the number of starting and stopping times of the compressor is reduced, and the service life of the unit is prolonged.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A defrosting control method of an air conditioning unit is characterized in that the air conditioning unit comprises more than two systems, the more than two systems share a fan, and the defrosting control method comprises the following steps:
when the system needs defrosting, controlling the system to enter a defrosting mode and executing a first defrosting control logic;
and when other systems in the more than two systems need defrosting and the system does not need defrosting, controlling the system to enter a defrosting mode and executing a second defrosting control logic.
2. The method of claim 1,
executing first defrost control logic comprising: controlling a compressor of the system to operate according to a first preset frequency;
and/or the presence of a gas in the gas,
executing second frost control logic comprising: controlling a compressor of the system to operate according to a second preset frequency;
wherein the first preset frequency is greater than the second preset frequency; and when the first defrosting control logic or the second defrosting control logic is executed, the fan shared by a plurality of systems is closed, and the four-way valve is controlled to change direction.
3. The method of claim 2, wherein executing second frost control logic further comprises:
before controlling a compressor of the system to operate according to a second preset frequency, judging whether the system meets a condition of quitting defrosting;
when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
4. The method according to any one of claims 1-3, wherein when the other system of the two or more systems requires defrosting, the system does not require defrosting, further comprising:
when the system needing defrosting finishes defrosting, the system is controlled to exit the defrosting mode.
5. The utility model provides an air conditioning unit's defrosting control device, its characterized in that, air conditioning unit includes two above systems, the fan is shared to two above systems, defrosting control device includes:
the first control unit is used for controlling the system to enter a defrosting mode and executing a first defrosting control logic when the system needs defrosting;
and the second control unit is used for controlling the affiliated system to enter a defrosting mode and executing a second defrosting control logic when other systems in the more than two systems need defrosting and the affiliated system does not need defrosting.
6. The apparatus of claim 5,
executing first defrost control logic comprising: controlling a compressor of the system to operate according to a first preset frequency;
and/or the presence of a gas in the gas,
executing second frost control logic comprising: controlling a compressor of the system to operate according to a second preset frequency;
wherein the first preset frequency is greater than the second preset frequency; and when the first defrosting control logic or the second defrosting control logic is executed, the fan shared by a plurality of systems is closed, and the four-way valve is controlled to change direction.
7. The apparatus of claim 6, wherein executing second frost control logic further comprises:
before controlling a compressor of the system to operate according to a second preset frequency, judging whether the system meets a condition of quitting defrosting;
when the condition of quitting defrosting is judged not to be met, controlling a compressor of the system to operate according to a first preset frequency; and when judging that the defrosting exiting condition is met, controlling the compressor of the system to operate according to a second preset frequency.
8. The apparatus of any one of claims 5-7, further comprising:
and the third control unit is used for controlling the system to exit the defrosting mode when other systems in the more than two systems need defrosting and the system does not need defrosting and the system needing defrosting finishes defrosting.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. An air conditioning assembly comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the steps of the method of any one of claims 1 to 4 when executing the program, or comprising the defrosting control means of the air conditioning assembly of any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844010.3A CN113531776B (en) | 2021-07-26 | 2021-07-26 | Defrosting control method and device for air conditioning unit, storage medium and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844010.3A CN113531776B (en) | 2021-07-26 | 2021-07-26 | Defrosting control method and device for air conditioning unit, storage medium and air conditioning unit |
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| CN113531776B (en) | 2022-05-10 |
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