CN117704676A - Control method, device, equipment and medium of variable-frequency air source heat pump - Google Patents
Control method, device, equipment and medium of variable-frequency air source heat pump Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application provides a control method, a control device, control equipment and a storage medium of a variable-frequency air source heat pump. The method comprises the following steps: when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions; and controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level. The method not only improves the use safety of the variable frequency air source heat pump, but also realizes the personalized control of the variable frequency air source heat pump, and improves the intellectualization of the variable frequency air source heat pump.
Description
Technical Field
The application relates to the field of electromechanical control, in particular to a control method, a device, equipment and a medium of a variable-frequency air source heat pump.
Background
The air source heat pump is an energy-saving device which utilizes high potential energy to enable heat to flow from low-level heat source air to high-level heat source, and can convert low-level heat energy (such as heat contained in air, soil and water) which cannot be directly utilized into high-level heat energy which can be utilized, so that the aim of saving part of high potential energy (such as coal, fuel gas, oil, electric energy and the like) is achieved.
The variable frequency air source heat pump is one of the air source heat pumps, and is widely applied because the variable frequency air source heat pump is more energy-saving. In the related art, the control of the variable-frequency air source heat pump is simple and rough, and the matching degree with the actual application scene is not high.
Disclosure of Invention
In order to overcome the technical problems in the related art, the application provides a control method, a device, equipment and a medium of a variable-frequency air source heat pump.
In a first aspect, the present application provides a control method of a variable frequency air source heat pump, including:
when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions;
and controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level.
In a second aspect, the present application provides a control device for a variable frequency air source heat pump, including:
the determining module is used for determining a shutdown level corresponding to a preset shutdown condition when the variable-frequency air source heat pump meets the preset shutdown condition;
and the control module is used for controlling the shutdown of the compressor of the variable-frequency air source heat pump according to the shutdown level.
In a third aspect, the present application provides a variable frequency air source heat pump, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the control method of the variable frequency air source heat pump provided in the first aspect of the embodiment of the present application when executing the computer program.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for controlling a variable frequency air source heat pump provided in the first aspect of the present application.
According to the technical scheme, when the variable frequency air source heat pump meets the preset shutdown conditions, the shutdown level corresponding to the preset shutdown conditions is determined, and the compressor of the variable frequency air source heat pump is controlled to be shut down according to the shutdown level, namely, the shutdown scheme matched with the current shutdown level can be provided for the variable frequency air source heat pump, so that the safety of the use of the variable frequency air source heat pump is improved, the personalized control of the variable frequency air source heat pump is realized, and the intellectualization of the variable frequency air source heat pump is improved.
Drawings
Fig. 1 is a schematic flow chart of a control method of a variable frequency air source heat pump according to an embodiment of the present application;
fig. 2 is another flow chart of a control method of a variable frequency air source heat pump according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a control method of a variable frequency air source heat pump according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device of a variable frequency air source heat pump according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a variable frequency air source heat pump according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the present application are further described in detail by the following examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The method and the device can be applied to the scene of shutdown control of the variable-frequency air source heat pump, namely, how to shutdown after the variable-frequency air source heat pump reaches the set shutdown condition. In the traditional scheme, the shutdown scheme of the variable frequency air source heat pump is easy and rough, for example, when the variable frequency air source heat pump is operated at a higher working frequency, the variable frequency air source heat pump is directly shut down, so that the service life of the variable frequency air source heat pump is reduced. Therefore, the technical scheme provided by the application not only can ensure the use safety of the variable frequency air source heat pump, but also can improve the reliability of the variable frequency air source heat pump and realize the personalized control of the variable frequency air source heat pump.
Fig. 1 is a schematic flow chart of a control method of a variable frequency air source heat pump according to an embodiment of the present application. As shown in fig. 1, the method may include:
s101, when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions.
The shutdown scenario of the variable frequency air source heat pump may be a protection shutdown or a non-protection shutdown, and the protection shutdown is generally considered to be the safety of the variable frequency air source heat pump, for example, various protection measures such as overcurrent protection, high-voltage protection, sensor short-circuit protection and the like are involved in the use process of the variable frequency air source. The non-protection shutdown may be a shutdown scheme under other non-safety protection scenes, for example, a shutdown scheme based on temperature control may set a temperature for the variable frequency air source heat pump, and after the exhaust temperature of the variable frequency air source heat pump reaches the set temperature, the compressor of the variable frequency air source heat pump is controlled to stop.
Specifically, a plurality of sets of preset shutdown conditions may be set, and the preset shutdown conditions may be threshold ranges for different parameters, such as the exhaust temperature exceeding a certain threshold, the current or voltage exceeding a certain threshold, and the like. Further, corresponding shutdown levels may also be set for multiple sets of preset shutdown conditions. The shutdown level is used for reflecting the level of the variable frequency air source heat pump in the aspect of safety protection, and the higher the shutdown level is, the higher the safety requirement on the variable frequency air source heat pump is, namely the higher the shutdown aging requirement on the variable frequency air source heat pump is, and at the moment, a shutdown scheme capable of meeting the safety requirement can be selected; on the contrary, the lower the shutdown level is, the lower the safety requirement on the variable frequency air source heat pump is, and at the moment, the important point can be placed on the aspect of the reliability requirement of the variable frequency air source heat pump, and some shutdown schemes capable of meeting the reliability requirement are selected.
In one embodiment, preset parameters such as exhaust temperature, current, voltage, sensor operation state and the like may be set, monitored, and the monitored parameter values are compared with preset shutdown conditions to determine whether the variable frequency air source heat pump meets the preset shutdown conditions. After determining that the variable-frequency air source meets the preset shutdown condition, determining the shutdown level corresponding to the current preset shutdown condition based on the corresponding relation between the preset shutdown condition and the shutdown level.
S102, controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level.
After determining the shutdown level, a control mode matched with the shutdown level can be used for controlling the shutdown of the compressor of the variable-frequency air source heat pump. For example, when the determined shutdown level is higher, the priority of the safety is higher than the priority of the reliability, for example, in the scene of overcurrent protection, when the variable frequency air source heat pump meets the condition of overcurrent protection, the shutdown of the compressor of the variable frequency air source heat pump can be directly controlled due to the higher shutdown level of the condition of overcurrent protection and the shorter time response requirement on shutdown. When the determined shutdown level is lower, the reliability priority is higher than the safety priority, and shutdown schemes which can meet the reliability requirement can be selected, for example, the working frequency of the variable frequency air source heat pump is reduced to a preset frequency, then the compressor of the variable frequency air source heat pump is controlled to be shut down, and the service life of the variable frequency air source heat pump is prolonged.
The method includes the steps that when the current of the variable-frequency air source heat pump is monitored to be larger than the preset current and the overcurrent protection shutdown condition is met, the shutdown level corresponding to the overcurrent protection shutdown condition can be determined to be 1 level by inquiring a mapping relation table between the preset shutdown condition and the shutdown level, and then the compressor shutdown of the variable-frequency air source heat pump can be controlled according to a shutdown scheme corresponding to the shutdown level '1 level'.
According to the control method for the variable frequency air source heat pump, when the variable frequency air source heat pump meets the preset shutdown condition, the shutdown level corresponding to the preset shutdown condition is determined, and the compressor of the variable frequency air source heat pump is controlled to be shut down according to the shutdown level, namely, a shutdown scheme matched with the current shutdown level can be provided for the variable frequency air source heat pump, so that the safety of the use of the variable frequency air source heat pump is improved, personalized control of the variable frequency air source heat pump is realized, and the intellectualization of the variable frequency air source heat pump is improved.
In one embodiment, optionally, controlling compressor shutdown of the variable frequency air source heat pump according to the shutdown level comprises: and when the shutdown level is higher than the first level, controlling the compressor of the variable-frequency air source heat pump to be shut down.
Optionally, controlling the compressor shutdown of the variable frequency air source heat pump according to the shutdown level comprises: when the shutdown level is lower than the first level, acquiring the current working frequency of the compressor; and controlling the compressor of the variable-frequency air source heat pump to stop according to the working frequency and the stop level.
Optionally, controlling the compressor shutdown of the variable frequency air source heat pump according to the shutdown level comprises: and if the shutdown level is higher than the second level and lower than the first level and the working frequency is lower than the preset threshold, controlling the compressor of the variable-frequency air source heat pump to be shutdown.
Specifically, the higher the shutdown level is, the higher the safety requirement on the variable frequency air source heat pump is, and the shorter the shutdown response time of the variable frequency air source heat pump is required, so that when the shutdown level is higher than the first level, the highest priority of the safety of the variable frequency air source heat pump at the moment is indicated, the current working frequency of the variable frequency air source heat pump is not required to be considered, and the compressor of the variable frequency air source heat pump can be directly controlled to be stopped, so that the corresponding safety protection is met.
When the shutdown level is lower than the first level, the priority of the safety of the variable frequency air source heat pump is reduced, and the influence of shutdown on the reliability of the variable frequency air source heat pump can be considered. In general, the operating frequency of the compressor is related to the service life of the variable frequency air source heat pump when the variable frequency air source heat pump is shut down, i.e. when the variable frequency air source heat pump is shut down at a higher operating frequency, the service life of the variable frequency air source heat pump is affected. Therefore, when the shutdown level is lower than the first level, the current working frequency of the compressor of the variable frequency air source heat pump can be acquired, and the compressor of the variable frequency air source heat pump is controlled to be shutdown based on the working frequency and the shutdown level.
When the shutdown level is between the second level and the first level, it can be determined that the current requirement of the variable frequency air source heat pump on the safety is lower than the requirement of the first level on the safety and higher than the requirement of the second level on the safety, and the influence of shutdown on the reliability of the variable frequency air source heat pump is also needed to be considered. Therefore, it is still needed to determine whether the working frequency of the compressor is smaller than a preset threshold, if the working frequency of the compressor is smaller than or equal to the preset threshold, it is indicated that the variable frequency air source heat pump is operated at a lower working frequency, and the direct shutdown has little influence on the service life of the variable frequency air source heat pump, so that the compressor shutdown of the variable frequency air source heat pump can be directly controlled in order to meet the requirement of safety protection. If the working frequency of the compressor is larger than a preset threshold value, the direct shutdown has a larger influence on the service life of the variable-frequency air source heat pump, and the requirements of safety protection and reliability can be comprehensively considered, so that the working frequency of the variable-frequency air source heat pump is reduced to the preset frequency, and then the variable-frequency air source heat pump is controlled to stop. Wherein, a plurality of preset frequencies can be set, the selection of the preset frequencies is related to the shutdown level, and the higher the shutdown level is, the higher the preset frequency can be selected, so as to shorten the time for the down adjustment of the working frequency; conversely, the lower the shutdown level is, the lower preset frequency can be selected, so that the variable-frequency air source heat pump is reduced to a lower working frequency and then is stopped, and the service life of the variable-frequency air source heat pump is prolonged.
That is, in this embodiment, a matched shutdown scheme may be selected based on the shutdown level of the variable frequency air source heat pump, and when the shutdown level is higher than the first level, the requirement on reliability is ignored, the compressor of the variable frequency air source heat pump is directly controlled to shutdown, and the shutdown response time is shortest, so that the requirement of the variable frequency air source heat pump on safety protection can be satisfied; when the shutdown level is higher than the second level and lower than the first level and the working frequency is lower than a preset threshold, comprehensively considering the requirements on reliability and safety protection, and directly controlling the shutdown of the compressor of the variable-frequency air source heat pump; in addition, when the shutdown level is lower than the first level, the demands in the aspects of reliability and safety protection are comprehensively considered, and a matched shutdown scheme can be selected based on the current working frequency and the shutdown level of the compressor, so that the service life of the variable-frequency air source heat pump is prolonged.
In one embodiment, as shown in FIG. 2, controlling the compressor shutdown of the variable frequency air source heat pump according to the operating frequency and the shutdown level comprises:
s201, determining the frequency reduction rate of the compressor of the variable frequency air source heat pump according to the shutdown level.
S202, the working frequency of the compressor is adjusted down to a corresponding preset frequency according to the frequency-reducing rate, and then the compressor is controlled to stop.
Specifically, when the shutdown level is lower than the first level, the priority of the safety of the variable frequency air source heat pump is reduced, and at this time, the safety protection requirement and the influence of shutdown on the reliability of the variable frequency air source heat pump can be comprehensively considered. Therefore, when the operating frequency of the variable frequency air source heat pump is high, the operating frequency of the compressor of the variable frequency air source heat pump needs to be reduced to a preset frequency and then stopped. However, the frequency-reducing rate is also one of the parameters influencing the service life of the variable-frequency air source heat pump, and the larger the frequency-reducing rate is, the more aggressive the working frequency adjustment of the variable-frequency air source heat pump is, and the larger the influence on the service life of the variable-frequency air source heat pump is; conversely, the smaller the frequency-reducing rate is, the more gentle the working frequency of the variable-frequency air source heat pump is adjusted, and the smaller the influence on the service life of the variable-frequency air source heat pump is. Meanwhile, the larger the frequency-reducing rate is, the shorter the time spent on reducing the working frequency of the variable-frequency air source heat pump to the preset frequency is, namely, the shorter the shutdown response time is, and the more the safety protection requirement can be met; conversely, the smaller the frequency-reducing rate, the longer the time it takes to reduce the operating frequency of the variable-frequency air source heat pump to the preset frequency, i.e. the longer the shutdown response time becomes, and the requirement of safety protection is difficult to meet. Thus, considering the safety protection and reliability requirements in combination, the corresponding down rate may be selected according to the shutdown level.
Optionally, the rate of frequency reduction of the compressor of the variable frequency air source heat pump varies in proportion to the level of shutdown. That is, when the shutdown level is higher, a larger frequency-reducing rate can be selected, so that the variable-frequency air source heat pump is quickly reduced to a preset frequency according to the larger frequency-reducing rate and then is shutdown, and the shutdown response time is shortened, so that the safety protection requirement is met; when the shutdown level is lower, the importance can be placed on the requirement of reliability, so that a smaller frequency-reducing rate can be selected, the working frequency of the compressor is reduced to a preset frequency according to the smaller frequency-reducing rate, the whole frequency-reducing process is gentle, the influence on the service life of the variable-frequency air source heat pump is reduced, and the reliability of the variable-frequency air source heat pump is improved.
For example, a plurality of different down rates, such as 5 Hz/sec, 4 Hz/sec, 3 Hz/sec, and 2 Hz/sec, may be preset, with different down rates corresponding to different shutdown levels, with higher down rates resulting in a shorter shutdown response time, but aggressive down rates resulting in a relatively longer shutdown response time, but slow down. After obtaining the shutdown level, a down-conversion speed corresponding to the shutdown level can be determined from the plurality of down-conversion speeds based on the shutdown level, and the compressor is controlled to be shutdown after the working frequency of the compressor is reduced to a preset frequency based on the down-conversion speed. For example, when the shutdown level is higher, the maximum down-conversion rate (such as 5 Hz/second) can be selected, so that the working frequency of the compressor can be quickly reduced to a preset frequency and then shutdown is performed, and the safety protection requirement is met; when the shutdown level is low, the minimum frequency-reducing rate (such as 2 Hz/second) can be selected, so that the whole frequency-reducing process is gentle, and the influence on the service life of the compressor is reduced.
In one embodiment, as shown in fig. 3, optionally, after the operating frequency of the compressor is adjusted down to a corresponding preset frequency according to the frequency-reducing rate, the step of controlling the compressor to stop includes:
s301, determining the target frequency after the down-regulation based on the shutdown level.
S302, the working frequency of the compressor is adjusted down to the target frequency according to the frequency-reducing rate, and then the compressor is controlled to stop.
Specifically, in order to reduce the influence on the service life of the variable frequency air source heat pump, before the compressor of the variable frequency air source heat pump is controlled to stop, the working frequency of the compressor is reduced according to the frequency reduction rate matched with the stop level, and the compressor is stopped after the working frequency of the compressor reaches the target frequency. Here, the target frequency is also one of the parameters affecting the service life of the variable frequency air source heat pump, and the smaller the target frequency is, the smaller the effect of stopping at the target frequency on the service life of the variable frequency air source heat pump is, but the longer the time taken to lower the operating frequency of the variable frequency air source heat pump to the target frequency is; conversely, the greater the target frequency, the greater the impact of a shutdown at that target frequency on the service life of the variable frequency air source heat pump, but the shorter the length of time it takes to reduce the operating frequency of the variable frequency air source heat pump to the target frequency. Thus, considering the safety protection and reliability requirements in combination, the corresponding target frequency may be selected based on the shutdown level.
Optionally, the determining the target frequency after the down-regulation based on the shutdown level includes: if the shutdown level is higher than a second level, determining the target frequency as a first frequency; if the shutdown level is lower than the second level, determining the target frequency as a second frequency; wherein the second level is lower than the first level and the first frequency is greater than the second frequency.
Specifically, the target frequency may vary in proportion to the level of shutdown. That is, when the shutdown level is higher than the second level, i.e. the shutdown level is higher, a higher target frequency can be selected, so that the time spent by the variable frequency air source heat pump for reducing the current working frequency to the target frequency is shortened, the rapid shutdown is realized, the target frequency during the shutdown is reduced to some extent, and the influence on the service life of the variable frequency air source heat pump is reduced; when the shutdown level is lower than the second level, a lower target frequency can be selected, and the shutdown level is lower at the moment, so that the importance of the requirement on reliability can be placed, and the variable-frequency air source heat pump is selected to be a smaller target frequency, so that the compressor is stopped at a smaller working frequency, the influence on the service life of the variable-frequency air source heat pump is reduced, and the reliability of the variable-frequency air source heat pump is improved.
For example, a plurality of different compressor frequencies, such as 50Hz, 40Hz and 30Hz, may be preset, different target frequencies correspond to different shutdown levels, after the shutdown levels are obtained, the target frequency corresponding to the shutdown level may be determined from the plurality of compressor frequencies based on the shutdown levels, and the compressor may be controlled to be shutdown after the working frequency of the compressor is reduced to the target frequency according to a certain frequency reduction rate. For example, a maximum target frequency (e.g., 50 Hz) may be selected when the shutdown level is high, and a minimum target frequency (e.g., 30 Hz) may be selected when the shutdown level is low.
In this embodiment, the down-conversion rate or the down-regulated target frequency can be determined based on the down-conversion rate, and the down-conversion rate is reduced to the target frequency according to the down-conversion rate, so that the determined down-conversion rate is adapted to the target frequency and the down-conversion level, thereby not only meeting the requirement of safety protection, but also reducing the influence on the service life of the variable-frequency air source heat pump and improving the reliability of the variable-frequency air source heat pump.
Fig. 4 is a schematic structural diagram of a control device of a variable frequency air source heat pump according to an embodiment of the present application. As shown in fig. 4, the apparatus may include: a determination module 401 and a control module 402.
Specifically, the determining module 401 is configured to determine a shutdown level corresponding to a preset shutdown condition when the variable frequency air source heat pump meets the preset shutdown condition;
the control module 402 is configured to control a compressor shutdown of the variable frequency air source heat pump based on the shutdown level.
According to the control device of the variable frequency air source heat pump, when the variable frequency air source heat pump meets the preset shutdown condition, the shutdown level corresponding to the preset shutdown condition is determined, and the compressor of the variable frequency air source heat pump is controlled to be shut down according to the shutdown level, namely, a shutdown scheme matched with the current shutdown level can be provided for the variable frequency air source heat pump, so that the safety of the use of the variable frequency air source heat pump is improved, the personalized control of the variable frequency air source heat pump is realized, and the intellectualization of the variable frequency air source heat pump is improved.
Based on the above embodiments, optionally, the control module 402 is specifically configured to control the compressor of the variable frequency air source heat pump to stop when the stop level is higher than the first level.
On the basis of the above embodiment, optionally, the control module 402 is further specifically configured to obtain the current operating frequency of the compressor when the shutdown level is lower than the first level; and controlling the compressor of the variable-frequency air source heat pump to stop according to the working frequency and the stop level.
Optionally, based on the above embodiment, the control module 402 is further specifically configured to determine a frequency-reducing rate of the compressor of the variable frequency air source heat pump according to the shutdown level; and the working frequency of the compressor is adjusted down to a corresponding preset frequency according to the frequency-reducing rate, and then the compressor is controlled to stop.
Optionally, the frequency reduction rate of the compressor of the variable frequency air source heat pump varies in proportion to the shutdown level.
Based on the above embodiments, optionally, the control module 402 is further specifically configured to determine the target frequency after the down-regulation based on the shutdown level; and controlling the compressor to stop after the working frequency of the compressor is adjusted down to the target frequency according to the frequency reduction rate.
On the basis of the above embodiment, optionally, the control module 402 is further specifically configured to determine the target frequency as the first frequency if the shutdown level is higher than the second level; if the shutdown level is lower than the second level, determining the target frequency as a second frequency; wherein the second level is lower than the first level and the first frequency is greater than the second frequency.
In one embodiment, a variable frequency air source heat pump is provided, the internal structure of which may be as shown in FIG. 5. The variable frequency air source heat pump includes a processor, memory and network interface (not shown) connected by a system bus. Wherein the processor of the variable frequency air source heat pump is configured to provide computing and control capabilities. The network interface of the variable-frequency air source heat pump is used for communicating with an external terminal through network connection. The memory of the variable frequency air source heat pump is used for storing a computer program which, when executed by a processor, implements the steps of a method of controlling the variable frequency air source heat pump.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of some of the structures associated with the present application and is not limiting of the variable frequency air source heat pump to which the present application is applied, and that a particular variable frequency air source heat pump may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a variable frequency air source heat pump is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor, when executing the computer program, performing the steps of:
when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions;
and controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions;
and controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level.
The control device of the variable frequency air source heat pump, the variable frequency air source heat pump and the storage medium provided in the above embodiments can execute the control method of the variable frequency air source heat pump provided in any embodiment, and have the corresponding functional modules and beneficial effects of executing the method. Technical details not described in detail in the above embodiments may be found in the control method of the variable frequency air source heat pump provided in any of the above embodiments.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. The control method of the variable frequency air source heat pump is characterized by comprising the following steps of:
when the variable-frequency air source heat pump meets preset shutdown conditions, determining shutdown levels corresponding to the preset shutdown conditions;
and controlling the compressor of the variable-frequency air source heat pump to stop according to the stop level.
2. The method of claim 1, wherein said controlling a compressor shutdown of said variable frequency air source heat pump in accordance with said shutdown level comprises:
and when the shutdown level is higher than the first level, controlling the compressor of the variable-frequency air source heat pump to be shutdown.
3. The method of claim 1, wherein said controlling a compressor shutdown of said variable frequency air source heat pump in accordance with said shutdown level comprises:
when the shutdown level is lower than a first level, acquiring the current working frequency of the compressor;
and controlling the compressor of the variable-frequency air source heat pump to stop according to the working frequency and the stop level.
4. A method according to claim 3, wherein said controlling the compressor of said variable frequency air source heat pump to be shut down in accordance with said operating frequency and said shut down level comprises:
determining the frequency-reducing rate of the compressor of the variable-frequency air source heat pump according to the shutdown level;
and the working frequency of the compressor is adjusted down to a corresponding preset frequency according to the frequency-reducing rate, and then the compressor is controlled to stop.
5. The method of claim 4, wherein a rate of frequency reduction of a compressor of the variable frequency air source heat pump varies in proportion to the level of shutdown.
6. The method of claim 4, wherein said controlling the compressor to stop after said down-regulating the operating frequency of the compressor to the corresponding preset frequency according to the down-regulating rate comprises:
determining a target frequency after the down-regulation based on the shutdown level;
and controlling the compressor to stop after the working frequency of the compressor is adjusted down to the target frequency according to the frequency reduction rate.
7. The method of claim 6, wherein determining the down-regulated target frequency based on the shutdown level comprises:
if the shutdown level is higher than a second level, determining the target frequency as a first frequency;
if the shutdown level is lower than the second level, determining the target frequency as a second frequency; wherein the second level is lower than the first level and the first frequency is greater than the second frequency.
8. A control device of a variable frequency air source heat pump, comprising:
the determining module is used for determining a shutdown level corresponding to a preset shutdown condition when the variable-frequency air source heat pump meets the preset shutdown condition;
and the control module is used for controlling the shutdown of the compressor of the variable-frequency air source heat pump according to the shutdown level.
9. A variable frequency air source heat pump, comprising: a memory storing a computer program and a processor implementing the steps of the method of any one of claims 1 to 7 when the computer program is executed by the processor.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211082388.5A CN117704676A (en) | 2022-09-06 | 2022-09-06 | Control method, device, equipment and medium of variable-frequency air source heat pump |
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| CN202211082388.5A CN117704676A (en) | 2022-09-06 | 2022-09-06 | Control method, device, equipment and medium of variable-frequency air source heat pump |
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