CN114413534B - Defrosting control method, device, equipment, computer equipment and electronic equipment - Google Patents
Defrosting control method, device, equipment, computer equipment and electronic equipment Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The application relates to a defrosting control method, a defrosting control device, defrosting control equipment, electronic equipment and computer program products, wherein the defrosting control method comprises the following steps of: acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data; comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently reached; the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state; and when the current defrosting triggering condition is determined to be reached, controlling the defrosting device to execute corresponding defrosting operation. The method is used for determining that defrosting time is more fit with actual conditions, so that resource waste is avoided, and normal operation of product equipment functions is ensured.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a defrosting control method, apparatus, device, computer device, electronic device, and computer program product.
Background
In recent years, air source heat pumps have been widely used in electronic devices such as floor heating, central air conditioning, and water heaters. The air source heat pump is used as one of heat pump technologies, has the reputation of 'carrying workers with natural energy', has multiple advantages of low use cost, easy operation, good heating effect, safety, cleanness and the like, takes the energy in ubiquitous air as main power, drives the compressor to operate through a small amount of electric energy, realizes energy transfer, does not need complex configuration, expensive water taking, recharging or soil heat exchange systems and special machine rooms, can gradually reduce the emission of a large amount of pollutants brought by traditional heating to the atmospheric environment, and ensures the purposes of energy conservation and environmental protection while ensuring the heating efficacy. However, for the air source heat pump product, the fin evaporator of the product is frosted continuously in the operation process, and the normal operation of the product equipment is affected when the frosting is too thick, so that the defrosting operation is required to be performed in time when the fin evaporator frosts.
In the traditional technical scheme, a detection reference value corresponding to an air source heat pump is generally set and stored before the electronic equipment leaves the factory; and acquiring current detection data in the running process of the air source heat pump, and comparing the current detection data with a detection reference value stored in advance to determine whether a defrosting triggering condition is currently reached or not, thereby determining whether to execute defrosting operation or not. However, due to the influence of factors such as ambient temperature and unit operation aging, the frosting condition of the fin evaporator of the air source heat pump is inconsistent, whether the defrosting triggering condition is reached is determined according to a prestored detection reference value according to the traditional technical scheme, when the defrosting time is determined, no frosting is likely to occur on the fin evaporator, and at the moment, the resource waste is caused by performing the defrosting operation; or when the defrosting triggering condition is determined to be reached, the frosting on the fin evaporator is too thick, and at the moment, the defrosting operation is performed, so that the heating attenuation is too large, and the normal operation of the air source heat pump function is affected.
How to determine defrosting time in the defrosting control process, avoiding wasting resources and guaranteeing normal operation of product equipment functions is a technical problem that needs to be solved by the skilled person at present.
Disclosure of Invention
Based on this, it is necessary to provide a defrosting control method, device, equipment, computer equipment, electronic equipment and computer program product, which can accurately determine the defrosting time, avoid wasting resources and ensure the normal operation of the functions of the product equipment.
In a first aspect, the present application provides a defrosting control method, including:
acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data;
comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently achieved; the target detection reference value is determined according to the reference operation data of the product equipment in a standard operation state;
and when the current defrosting triggering condition is determined to be reached, controlling the defrosting device to execute corresponding defrosting operation.
In one embodiment, the determining manner of the target detection reference value includes:
acquiring reference operation data in a preset time period after the product equipment is started for the first time or started after the product equipment exits from defrosting control and the compressor reaches full frequency operation for the first time;
And determining a corresponding target detection reference value according to the reference operation data.
In one embodiment, the target detection reference value includes a target fan current value, a target outlet water temperature difference, and a target evaporator heat exchange temperature difference.
In one embodiment, the process of determining the target fan current value includes:
and determining the fan current value of the product equipment in a standard running state as the target fan current value.
In one embodiment, the process of determining the target outlet water temperature difference comprises the following steps:
and determining the target water outlet and return temperature difference according to the water outlet temperature and the water return temperature of the product equipment in the standard running state.
In one embodiment, the process of determining the target evaporator heat exchange temperature difference includes:
determining the heat exchange temperature difference of the target evaporator according to the reference ambient temperature and the saturation temperature of the low-pressure sensor when the product equipment is in a standard running state; the reference ambient temperature is an ambient temperature of the product equipment in the standard operating state.
In one embodiment, determining that the defrost trigger condition is currently reached includes:
And determining that the defrosting triggering condition is currently achieved when the first difference value between the current fan current value and the target fan current value is larger than a first threshold value, the second difference value between the target outlet water temperature difference and the current outlet water temperature difference is larger than a second threshold value, and the third difference value between the current evaporator heat exchange temperature difference and the target evaporator heat exchange temperature difference is larger than a third threshold value.
In one embodiment, the method further comprises:
setting a corresponding relation between the reference ambient temperature and the target detection reference value according to the reference ambient temperature;
and determining a target detection reference value corresponding to the current environment temperature according to the current environment temperature of the product equipment in the current running state and the corresponding relation.
In one embodiment, the method further comprises:
and acquiring an environment temperature interval in which the reference environment temperature is located, and determining the corresponding relation between the reference environment temperature and the target detection reference value as the corresponding relation between the environment temperature interval and the target detection reference value.
In a second aspect, the present application further provides a defrosting control device, including:
the acquisition module is used for acquiring current operation data of the product equipment in a current operation state and determining current detection data according to the current operation data;
The comparison module is used for comparing the current detection data with a target detection reference value and determining whether the current defrosting triggering condition is reached or not; the target detection reference value is determined according to the reference operation data of the product equipment in a standard operation state;
and the execution module is used for controlling the defrosting device to execute corresponding defrosting operation when the current defrosting triggering condition is determined to be reached.
In a third aspect, the present application also provides a computer device comprising a memory storing a computer program and a processor implementing the steps of the above method when the processor executes the computer program.
In a fourth aspect, the present application further provides a defrosting control device, where the defrosting control device includes a computer device, an operation data acquisition device and a defrosting device that are respectively connected with the computer device in a communication manner; wherein,
the operation data acquisition device is used for acquiring operation data of the product equipment;
the computer equipment is used for determining a target detection reference value according to the reference operation data of the product equipment in the standard operation state; determining current detection data according to the current operation data of the product equipment in the current operation state; comparing the current detection data with the target detection reference value to determine whether a defrosting triggering condition is currently achieved; when the current defrosting triggering condition is determined to be reached, a defrosting control signal is sent to the defrosting device; the operation data comprises the reference operation data and the current operation data;
The defrosting device is used for executing corresponding defrosting operation according to the defrosting control signal.
In a fifth aspect, the present application further provides an electronic device, including an electronic device body, where the electronic device body includes a product device, and the electronic device further includes a defrosting control device as described above.
In a sixth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:
acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data;
comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently achieved; the target detection reference value is determined according to the reference operation data of the product equipment in a standard operation state;
and when the current defrosting triggering condition is determined to be reached, controlling the defrosting device to execute corresponding defrosting operation.
According to the defrosting control method, the device, the equipment, the computer equipment, the electronic equipment and the computer program product, the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state, and the target detection reference value is determined according to the actual standard operation state, so that the target detection reference value can adapt to the environment temperature of the product equipment and the equipment aging condition, whether the current defrosting triggering condition is reached or not is determined by utilizing the current detection data and the target detection reference value, the defrosting time is determined to be more in fit with the actual condition, the determined defrosting time is more timely and accurate, the condition that resources are wasted due to frostless defrosting is avoided, and the condition that the normal operation of the function of the product equipment is influenced due to the fact that the defrosting is too thick is avoided.
Drawings
FIG. 1 is a flow chart of a defrost control method according to one embodiment;
fig. 2 is a flowchart of setting a target detection reference value in another embodiment;
FIG. 3 is a flowchart illustrating a method for determining whether a defrost trigger condition is reached in another embodiment;
FIG. 4 is a block diagram of a defrost control apparatus in one embodiment;
FIG. 5 is an internal block diagram of a computer device in one embodiment;
fig. 6 is a schematic structural view of a defrost control apparatus in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. 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.
As shown in fig. 1, in the present embodiment, there is provided a defrosting control method including:
step 102, current operation data of the product equipment in the current operation state is obtained, and current detection data is determined according to the current operation data.
Specifically, the product device in this embodiment refers to a product that forms frost and needs defrosting operation during operation, and the specific type of the product device in this embodiment is not limited, and may be, for example, an air source heat pump. Specifically, the current operation data refers to operation data of the product equipment collected in the current operation state; the specific type of the operation data is not limited in this embodiment. In actual operation, the operation data acquisition device is arranged at the corresponding position of the product equipment or is in communication connection with the product equipment so as to acquire the operation data corresponding to the product equipment.
It should be noted that, the collected current operation data is actual operation data, and the operation data may include accumulated operation time of the compressor heating, continuous operation time of the compressor, fin temperature, fan current value, outlet water temperature, return water temperature, and the like; in actual operation, corresponding current detection data needs to be further calculated according to current operation data, such as corresponding temperature difference of water outlet and return according to water outlet temperature and return temperature.
And 104, comparing the current detection data with a target detection reference value, determining whether the defrosting triggering condition is met currently, and determining the target detection reference value according to the reference operation data of the product equipment in the standard operation state.
Specifically, the reference operation data refers to operation data collected when the product equipment is in a standard operation state; similarly, the collected reference operation data is actual operation data, and the corresponding target detection reference value needs to be calculated according to the reference operation data.
Specifically, on the basis of determining a corresponding target detection reference value according to the reference operation data, after determining the current detection data according to the current operation data, comparing the current detection data with the target detection reference value, and determining whether the current defrosting trigger condition is reached or not, namely whether the defrosting operation is required to be executed or not according to the comparison result of the current detection data and the target detection reference value.
And 106, controlling the defrosting device to execute corresponding defrosting operation when the current defrosting triggering condition is determined to be reached.
Specifically, when the current reaching of the defrosting triggering condition is determined according to the current detection data and the target detection reference value, generating a defrosting control signal, and sending the defrosting control signal to the defrosting device; the defrosting device performs a corresponding defrosting operation according to the defrosting control signal.
It should be noted that, according to the defrosting mode, the defrosting operation specifically performed by the defrosting device is correspondingly different. Specifically, the defrosting mode comprises an electric heating defrosting method and a four-way reversing defrosting method; the electric heating defrosting method is to provide defrosting heat by electric heating and to defrost by installing resistor with proper power on the heat exchanger; the four-way reversing defrosting method is to change the flow direction of the refrigerant in the pipeline so as to control the conversion between refrigeration and heating and achieve the aim of defrosting.
In addition, when it is determined that the defrosting triggering condition is not met, current operation data of the product equipment in the current operation state is continuously obtained, current detection data are determined according to the current operation data, and whether the product equipment meets the defrosting triggering condition is continuously monitored.
According to the defrosting control method, the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state, and the target detection reference value is determined according to the actual standard operation state, so that the target detection reference value can adapt to the environment temperature of the product equipment and the equipment aging condition, whether the current defrosting trigger condition is reached or not is determined by utilizing the current detection data and the target detection reference value, the fact that the defrosting time is more fit with the actual condition is determined, the determined defrosting time is more timely and accurate, the condition that resource waste is caused by frostless defrosting is avoided, and the condition that normal operation affecting the functions of the product equipment is caused by defrosting due to excessively thick frosting is avoided.
On the basis of the above embodiment, the present embodiment further describes and optimizes a technical solution, and specifically, in this embodiment, a determining manner of the target detection reference value includes:
acquiring reference operation data in a preset time period after the product equipment is started for the first time or the product equipment is started after being withdrawn from defrosting control and the compressor reaches full frequency operation for the first time;
and determining a corresponding target detection reference value according to the reference operation data.
Specifically, the first startup of the product device refers to the first startup operation after the product device is installed, the startup after the product device exits the defrosting control refers to the restarting after the product device is shut down, or the defrosting control is restarted after the product device exits the defrosting control only. The compressor frequency is the running frequency of the compressor, the temperature regulation effect is influenced by the change of the compressor frequency, and when the compressor runs at the full frequency, the corresponding temperature regulation effect is optimal.
In the embodiment, the product equipment is started for the first time or started after the product equipment exits the defrosting control, and the state when the compressor first reaches the full frequency operation is determined as the standard operation state of the product equipment; and determining the operation data in the preset time period in the standard operation state as reference operation data.
Specifically, in actual operation, when the product equipment reaches a standard running state, running data within 0 s-60 s can be collected according to a 1s collection period, and then the integral average of the collected running data is calculated to obtain reference running data.
After the reference operation data is obtained, the corresponding target detection reference value is determined according to a preset calculation mode. The specific calculation mode is determined according to the specific parameter type of the operation data, and the specific determination mode is not limited in this embodiment.
It can be seen that, in this embodiment, the product device is started up for the first time or started up after the product device exits the defrosting control, and after the compressor first reaches the full frequency operation, the operation data of the product device in the preset time period is determined as the reference operation data; therefore, the reference operation data in the embodiment is not only determined according to the actual operation state, but also represents the operation data corresponding to the optimal operation state of the product equipment, so that the reference operation data is determined more accurately according to the mode of the embodiment, and the accuracy of determining the target detection reference value according to the reference operation data can be improved.
On the basis of the above embodiment, the technical solution is further described and optimized in this embodiment, and specifically, in this embodiment, the target detection reference value includes a target fan current value, a target outlet water return temperature difference, and a target evaporator heat exchange temperature difference.
In this embodiment, the target detection reference value includes three parameters, specifically, a target fan current value, a target outlet water return temperature difference, and a target evaporator heat exchange temperature difference. The target fan current value refers to a fan current value of the product equipment in a standard running state, the target outlet backwater temperature difference refers to an outlet backwater temperature difference of the product equipment in the standard running state, and the target evaporator heat exchange temperature difference refers to an evaporator heat exchange temperature difference of the product equipment in the standard running state.
The fan current value refers to a current value corresponding to the fan of the product equipment when the fan runs, the outlet water return temperature difference refers to a difference value between the outlet water temperature and the return water temperature of the product equipment, and the evaporator heat exchange temperature difference refers to a difference value between the ambient temperature and the saturation temperature of a low-pressure sensor of the product equipment; the low-pressure sensor saturation temperature refers to the temperature of the liquid and gaseous refrigerant in a dynamic balance state, namely, in a saturation state. It should be noted that the number of the substrates,
the target fan current value refers to a fan current value of the product equipment in a standard operation state, the target outlet backwater temperature difference refers to an outlet backwater temperature difference of the product equipment in the standard operation state, and the target evaporator heat exchange temperature difference refers to an evaporator heat exchange temperature difference of the product equipment in the standard operation state.
According to the embodiment, whether the defrosting triggering condition is currently achieved or not is determined according to three parameter types of the current value of the fan, the temperature difference of the outlet water and the temperature difference of the heat exchange of the evaporator, the judging process is convenient, and the obtained judging result is accurate.
In one embodiment, the process of determining a target fan current value includes:
and determining the fan current value of the product equipment in the standard running state as a target fan current value.
In the embodiment, a current detection circuit is preset to collect a fan current value of product equipment; and when the product equipment is determined to be in the standard running state, collecting a fan current value of the product equipment, and determining the collected fan current value as a target fan current value.
In one embodiment, the process of determining the temperature difference of the target outlet backwater comprises the following steps:
and determining a target outlet backwater temperature difference according to the outlet water temperature and backwater temperature of the product equipment in the standard running state.
In the embodiment, the outlet water temperature of the product equipment is collected by a first temperature sensor in advance, and the return water temperature of the product equipment is collected by a second temperature sensor in advance; when the product equipment is determined to be in the standard running state, collecting the water outlet temperature and the water return temperature of the product equipment, calculating the difference value of the water outlet temperature and the water return temperature, and determining the calculated difference value as the target water outlet and water return temperature difference.
In one embodiment, the process of determining the target evaporator heat exchange temperature difference includes:
determining a heat exchange temperature difference of a target evaporator according to a reference ambient temperature and a low-pressure sensor saturation temperature of product equipment in a standard running state; the reference ambient temperature is the ambient temperature of the product equipment in a standard operating state.
In the embodiment, a third temperature sensor is preset to acquire the saturation temperature of the low-pressure sensor of the product equipment; and when the product equipment is determined to be in the standard running state, collecting the saturation temperature of the low-pressure sensor of the product equipment. In addition, the environment temperature of the product equipment in the standard running state is obtained through an environment temperature sensor or directly from a network, namely, the corresponding reference environment temperature is determined. And then calculating the difference between the reference ambient temperature and the saturation temperature of the low-pressure sensor, and determining the calculated difference as the heat exchange temperature difference of the target evaporator.
Therefore, the method for determining the target detection reference value in this embodiment is convenient, so that the convenience of defrosting control can be improved.
On the basis of the above embodiment, the present embodiment further describes and optimizes a technical solution, and specifically, in this embodiment, the determining a process of reaching a defrosting triggering condition currently includes:
and determining that the defrosting triggering condition is currently achieved when the first difference value between the current fan current value and the target fan current value is larger than a first threshold value, the second difference value between the target outlet backwater temperature difference and the current outlet backwater temperature difference is larger than a second threshold value, and the third difference value between the current evaporator heat exchange temperature difference and the target evaporator heat exchange temperature difference is larger than a third threshold value.
Specifically, a first threshold, a second threshold and a third threshold are firstly obtained; wherein, the first threshold is preset as DeltaAi 0 The second threshold is DeltaTwai 0 The third threshold is DeltaTti 0 The method comprises the steps of carrying out a first treatment on the surface of the The specific values of the first threshold, the second threshold and the third threshold may be set according to practical experience, which is not limited in this embodiment.
Then determining current detection data according to the current operation data; the current detection data comprise a current fan current value A, a current outlet backwater temperature difference DeltaTw and a current evaporator heat exchange temperature difference DeltaTt; the current value of the fan refers to the current value of the fan when the product equipment is in the current running state, the current temperature difference of the outgoing and the return water refers to the temperature difference of the outgoing and the return water when the product equipment is in the current running state, and the current temperature difference of the heat exchange of the evaporator refers to the temperature difference of the heat exchange of the evaporator when the product equipment is in the current running state.
Acquiring a target detection reference value; the target detection reference value comprises a target fan current value Ai, a target outlet water return temperature difference delta Twi and a target evaporator heat exchange temperature difference delta Tti.
Calculating a first difference value between the current fan current value A and the target fan current value Ai, and judging whether the first difference value is larger than a first threshold value delta Ai 0 The method comprises the steps of carrying out a first treatment on the surface of the Calculating a second difference value of the target backwater temperature difference delta Tw and the current backwater temperature difference delta Tw, and judging whether the second difference value is larger than a second threshold value delta Tw 0 The method comprises the steps of carrying out a first treatment on the surface of the Calculating a third difference value of the heat exchange temperature difference DeltaTt of the current evaporator and the heat exchange temperature difference DeltaTti of the target evaporator, and judging whether the third difference value is larger than a third threshold DeltaTti 0 。
It should be noted that, if frosting causes the fan to perform work to increase, the current fan current value a will increase, and the corresponding first difference value increases; if the heating amount is reduced due to frosting, under the condition that the water flow is unchanged, the temperature difference between the water outlet temperature and the water return temperature is reduced, namely the current water outlet and return temperature difference delta Tw is reduced, and the second difference is increased; if the frosting causes the increase of the thermal resistance, the heat exchange temperature difference of the current evaporator is increased, and the third difference value is increased.
Specifically, when the first difference is greater than the first threshold Δai 0 The second difference is greater than the secondThreshold DeltaTwai 0 And the third difference is greater than a third threshold ΔTti 0 And when the defrosting trigger condition is met, determining that the defrosting is currently performed and the frosting reaches the proper thickness. That is, whether or not the following three conditions are satisfied is determined based on the current detection data and the target detection reference value:
condition 1: a-Ai is not less than DeltaAi 0 ；
Condition 2: delta Twai-Delta Tw is not less than Delta Twai 0 ；
Condition 3: deltaTt-DeltaTi is not less than DeltaTti 0 ；
If the above conditions 1, 2 and 3 are satisfied at the same time, it indicates that the defrosting triggering condition is currently reached.
Therefore, according to the method, the current defrosting triggering condition is determined, and the judging method is accurate and convenient.
On the basis of the above embodiment, the technical solution is further described and optimized in this embodiment, and specifically, in this embodiment, the method further includes:
setting a corresponding relation between the reference environmental temperature and a target detection reference value according to the reference environmental temperature;
and determining a target detection reference value corresponding to the current environment temperature according to the current environment temperature and the corresponding relation of the product equipment in the current running state.
Specifically, in this embodiment, when the product device is in the standard operation state, the reference operation data and the corresponding reference environmental temperature of the product device are obtained, the corresponding target detection reference value is determined according to the reference operation data, and the corresponding relationship between the reference environmental temperature and the target detection reference value is set.
If the product equipment does not reach the standard running state after being started up for a certain time, the current environment temperature of the product equipment in the current running state can be obtained, and the target detection reference value corresponding to the current environment temperature, namely the target detection reference value corresponding to the current detection data, is determined according to the corresponding relation between the current environment temperature and the reference environment temperature and the target detection reference value determined in the historical operation process.
That is, in actual operation, the target detection reference value corresponding to the current detection data may be determined according to the correspondence between the reference environmental temperature and the target detection reference value determined in the previous day or earlier, so according to the manner of this embodiment, whether the product device reaches the standard operation state in the current operation process or not, the defrosting control can be performed with respect to the current detection data that is currently acquired, and the overall reliability of the defrosting control is ensured.
On the basis of the above embodiment, the technical solution is further described and optimized in this embodiment, and specifically, in this embodiment, the method further includes:
and acquiring an environment temperature interval in which the reference environment temperature is located, and determining the corresponding relation between the reference environment temperature and the target detection reference value as the corresponding relation between the environment temperature interval and the target detection reference value.
Specifically, in this embodiment, after the reference ambient temperature is obtained, an ambient temperature interval in which the reference ambient temperature is located is obtained, and then the corresponding relationship between the reference ambient temperature and the target detection reference value is determined as the corresponding relationship between the ambient temperature interval and the target detection reference value. For example, assuming that the reference environmental temperature is 3 ℃, the environmental temperature range in which the reference environmental temperature is located is 0 to 5 ℃, if it is determined that the target detection reference value corresponding to the reference environmental temperature of 3 ℃ is X, the target detection reference value X is set as the target detection reference value corresponding to the environmental temperature range of 0 to 5 ℃. In the subsequent defrosting control process, if the current ambient temperature is any temperature in the ambient temperature interval 0-5 ℃, the target detection reference value corresponding to the current ambient temperature is the target detection reference value X corresponding to the ambient temperature interval 0-5 ℃.
It can be seen that, in this embodiment, by setting the target detection reference value corresponding to the ambient temperature section according to the target detection reference value corresponding to the reference ambient temperature, the convenience of determining the target detection reference value can be improved.
In order to enable those skilled in the art to better understand the technical solutions in the present application, the following details are provided for the technical solutions in the embodiments of the present application in conjunction with a practical application scenario. In the embodiment of the application, an air source heat pump is taken as a product device for illustration, and the specific steps are as follows:
fig. 2 is a flowchart illustrating a process of setting the target detection reference value in the present embodiment. After the air source heat pump is started for the first time or after the air source heat pump exits defrosting control, acquiring the frequency of the compressor, and judging whether the compressor runs at full frequency; if the compressor does not reach the full frequency operation, continuing to read the frequency of the compressor and judging whether the compressor reaches the full frequency operation; if the compressor reaches full frequency operation, reading operation data, namely reference operation data, including a fan current value, a water outlet temperature, a water return temperature, a low-pressure sensor saturation temperature and a reference environment temperature, in 0-60 s after the compressor reaches full frequency operation, and determining a target detection reference value; the process of determining the target detection reference value includes: determining the collected fan current value as a target fan current value Ai; determining the difference value of the water outlet temperature and the water return temperature as a target water outlet and return temperature difference delta Twai; and determining the difference between the reference ambient temperature and the saturation temperature of the low-pressure sensor as the target evaporator heat exchange temperature difference delta Tti.
Setting the environment temperature range to-25-10 ℃, taking each 5 ℃ as a zone, and setting 7 environment temperature zones in total; acquiring an environment temperature interval in which a reference environment temperature is located, and updating a target detection reference value corresponding to the environment temperature interval by using the target detection reference value; setting the target detection reference value determined by history in the corresponding environment temperature interval for other environment temperature intervals; if the history does not determine the target detection reference value corresponding to a certain environmental temperature interval, the target detection reference value corresponding to the environmental temperature interval can be set by acquiring the target detection reference value input by the user.
Fig. 3 is a flow chart of determining whether a defrost trigger condition is reached in the present embodiment. The method comprises the steps of obtaining current operation data of the air source heat pump in a current operation state, and determining current detection data according to the current operation data, wherein the current detection data comprise a current fan current value A, a current water outlet and return temperature difference delta Tw and a current evaporator heat exchange temperature difference delta Tt.
If the corresponding target detection reference value is determined in the starting operation process, directly comparing the current detection data with the target detection reference value, and determining whether the current defrosting triggering condition is reached; if the corresponding target detection reference value is not determined in the starting operation process, after the current environment temperature is obtained, determining an environment temperature interval in which the current environment temperature is located, determining a target detection reference value corresponding to the current detection data according to the target detection reference value corresponding to the environment temperature interval, comparing the current detection data with the target detection reference value, and determining whether the current defrosting triggering condition is reached.
Specifically, a preset first threshold value is obtained as DeltaAi 0 The second threshold is DeltaTwai 0 The third threshold is DeltaTti 0 And determining whether a defrost trigger condition is currently reached by determining whether the following three conditions are simultaneously satisfied:
condition 1: a-Ai is not less than DeltaAi 0 ；
Condition 2: delta Twai-Delta Tw is not less than Delta Twai 0 ；
Condition 3: deltaTt-DeltaTi is not less than DeltaTti 0 ；
If the conditions 1, 2 and 3 are satisfied at the same time, it indicates that the frost is currently formed and reaches a proper thickness, and the defrosting trigger condition is currently reached, so that a defrosting control signal is generated and sent to the defrosting device; the defrosting device receives the defrosting control signal and executes corresponding defrosting operation; if only a part of the three conditions are reached, the current defrosting triggering condition is not reached, so that the current operation data are continuously acquired and continuously monitored.
According to the defrosting control method provided by the embodiment of the application, the target detection reference value is determined by acquiring the reference operation data of the air source heat pump in the standard operation state, and the target detection reference value is determined according to the actual standard operation state, so that the target detection reference value can adapt to the environment temperature of the air source heat pump and the equipment aging condition, whether the current defrosting triggering condition is reached or not is determined by utilizing the current detection data and the target detection reference value, the actual condition is more adhered to the defrosting moment is determined, the determined defrosting moment is more timely and accurate, the condition that resources are wasted due to frostless defrosting is avoided, and the condition that the normal operation of the air source heat pump function is influenced due to the fact that the frosting is too thick for defrosting is avoided; in addition, the process of determining the target detection reference value is convenient and quick, and the determined target detection reference value is more accurate; determining whether a defrosting triggering condition is met currently according to three parameter types of a fan current value, an outlet water temperature difference and an evaporator heat exchange temperature difference, wherein the judging process is convenient, and the obtained judging result is accurate; the defrosting control can be performed comprehensively and reliably.
It should be understood that, although the steps in the flowcharts related to the above embodiments are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a defrosting control device for realizing the defrosting control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in one or more embodiments of the defrosting control device provided below may refer to the limitation of the defrosting control method hereinabove, and will not be repeated here.
In one embodiment, as shown in fig. 4, there is provided a defrost control apparatus comprising: an acquisition module 402, a comparison module 404, and an execution module 406, wherein:
an obtaining module 402, configured to obtain current operation data of the product device in a current operation state, and determine current detection data according to the current operation data;
a comparison module 404, configured to compare the current detection data with a target detection reference value, and determine whether a defrosting trigger condition is currently reached; the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state;
and an execution module 406, configured to control the defrosting device to execute a corresponding defrosting operation when it is determined that the defrosting trigger condition is currently reached.
The defrosting control device provided by the embodiment of the invention has the same beneficial effects as the defrosting control method.
In one embodiment, the comparison module comprises:
the acquisition sub-module is used for acquiring reference operation data in a preset time period after the product equipment is started for the first time or started after the product equipment exits the defrosting control and the compressor reaches full frequency operation for the first time;
and the determining submodule is used for determining a corresponding target detection reference value according to the reference operation data.
In one embodiment, determining the sub-module includes:
and the first determining unit is used for determining the fan current value of the product equipment in the standard running state as a target fan current value.
In one embodiment, determining the sub-module includes:
and the second determining unit is used for determining the target outlet backwater temperature difference according to the outlet water temperature and backwater temperature of the product equipment in the standard running state.
In one embodiment, determining the sub-module includes:
the third determining unit is used for determining the heat exchange temperature difference of the target evaporator according to the reference ambient temperature and the saturation temperature of the low-pressure sensor when the product equipment is in the standard running state; the reference ambient temperature is the ambient temperature of the product equipment in a standard operating state.
In one embodiment, the comparison module comprises:
and the comparison submodule is used for determining that the defrosting triggering condition is currently achieved when the first difference value of the current fan current value and the target fan current value is larger than a first threshold value, the second difference value of the target outlet backwater temperature difference and the current outlet backwater temperature difference is larger than a second threshold value, and the third difference value of the current evaporator heat exchange temperature difference and the target evaporator heat exchange temperature difference is larger than a third threshold value.
In one embodiment, the defrost control apparatus further comprises:
the first setting module is used for setting the corresponding relation between the reference environmental temperature and the target detection reference value according to the reference environmental temperature;
and the second setting module is used for determining a target detection reference value corresponding to the current environment temperature according to the current environment temperature of the product equipment in the current running state and the corresponding relation.
In one embodiment, the defrost control apparatus further comprises:
and the third setting module is used for acquiring an environment temperature interval in which the reference environment temperature is located and determining the corresponding relation between the reference environment temperature and the target detection reference value as the corresponding relation between the environment temperature interval and the target detection reference value.
The respective modules in the above defrosting control device may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, the internal structure of which may be as shown in FIG. 5. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by a processor, implements a defrost control method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
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 computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device 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:
acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data;
comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently reached; the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state;
and when the current defrosting triggering condition is determined to be reached, controlling the defrosting device to execute corresponding defrosting operation.
The computer equipment provided by the embodiment of the invention has the same beneficial effects as the defrosting control method.
In one embodiment, as shown in fig. 6, there is provided a defrost control apparatus 600, the defrost control apparatus 600 comprising a computer apparatus 602, an operation data acquisition device 604 and a defrost device 606 in respective communication with the computer apparatus 602; wherein, the operation data acquisition device 604 is configured to acquire operation data of the product device 608;
a computer device 602 for determining a target detection reference value from reference operation data of the product device 608 in a standard operation state; determining current detection data according to the current operation data of the product device 608 in the current operation state; comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently reached; upon determining that the defrost trigger condition is currently reached, sending a defrost control signal to the defrost device 606; the operation data comprises reference operation data and current operation data;
and defrosting means 606 for performing a corresponding defrosting operation according to the defrosting control signal.
Specifically, when the product device 608 is turned on for operation, the type of the collected operation data is determined according to the operation state of the product device 608. The operation data comprises reference operation data and current operation data; the operation data of the product device 608 in the standard operation state is the reference operation data, and the operation data of the product device 608 in the current operation state is the current operation data. In one embodiment, the operational data includes a fan current value, a water outlet temperature, a water return temperature, and a low pressure sensor saturation temperature. In practice, the operation data corresponding to the product device 608 is collected by disposing the operation data collection device 604 at a corresponding location of the product device 608, or communicatively connecting the operation data collection device 604 with the product device 608. In this embodiment, the operation data acquisition device includes a current detection circuit for acquiring a current value of the fan, a first temperature sensor for acquiring a water outlet temperature of the product equipment, a second temperature sensor for acquiring a water return temperature of the product equipment, and a third temperature sensor for acquiring a saturation temperature of a low-pressure sensor of the product equipment; that is, in this embodiment, the current value of the wind turbine is collected by the current detection circuit, the outlet water temperature of the product equipment is collected by the first temperature sensor, the return water temperature of the product equipment is collected by the second temperature sensor, and the low-pressure sensor saturation temperature of the product equipment is collected by the third temperature sensor.
In addition, in this embodiment, an ambient temperature sensor communicatively connected to the computer device is further provided, where the ambient temperature sensor is configured to collect an ambient temperature and send the collected ambient temperature to the computer device 602; when the computer device 602 acquires the ambient temperature acquired by the ambient temperature sensor, determining the type of the acquired ambient temperature according to the operation state of the product device 608; the ambient temperature includes a reference ambient temperature and a current ambient temperature; the collected ambient temperature of the product device 608 in the standard operation state is set as the reference ambient temperature, and the ambient temperature of the product device 608 collected in the current operation state is set as the current ambient temperature.
It should be noted that, in this embodiment, the first temperature sensor, the second temperature sensor, the third temperature sensor, and the temperature sensor refer to sensors for collecting temperature data, and may be the same type of temperature sensor, or temperature sensors with different accuracy according to actual requirements, which is not limited in this embodiment.
Specifically, in this embodiment, the target detection reference value includes a target fan current value, a target outlet water temperature difference, and a target evaporator heat exchange temperature difference; determining a fan current value of the product device 608 in a standard operating state as a target fan current value; determining a target outlet backwater temperature difference according to the outlet water temperature and the backwater temperature of the product equipment 608 in the standard operation state; determining a target evaporator heat exchange temperature difference according to a reference ambient temperature and a low-pressure sensor saturation temperature of the product equipment 608 in a standard running state; the reference ambient temperature is the ambient temperature of the product equipment in a standard operating state.
Correspondingly, determining the fan current value of the product equipment 608 in the current running state as the current fan current value; determining the current temperature difference of the water outlet and the water return according to the water outlet temperature and the water return temperature of the product equipment 608 in the current running state; the current evaporator heat exchange temperature differential is determined based on the current ambient temperature and the low pressure sensor saturation temperature of the product device 608 in the current operating state.
Specifically, in actual operation, the corresponding defrosting device 606 is set according to the selected defrosting mode, and the defrosting modes include an electrothermal defrosting method and a four-way reversing defrosting method; the electric heating defrosting method is to provide defrosting heat by electric heating and to defrost by installing resistor with proper power on the heat exchanger; the four-way reversing defrosting method is to change the flow direction of the refrigerant in the pipeline so as to control the conversion between refrigeration and heating and achieve the aim of defrosting. The present embodiment is not limited to the specific type of the defrosting device 606.
It should be noted that, the specific explanation of each step in this embodiment may refer to the explanation in each embodiment of the defrosting control method described above, and will not be repeated here.
The defrosting control device provided by the embodiment of the application has the same beneficial effects as the defrosting control method.
In one embodiment, an electronic device is provided that includes an electronic device body including a product device, the electronic device further including a defrost control device as described above.
In this embodiment, the electronic device includes an electronic device body and a defrost control device, the electronic device body including a product device. For example, when the electronic device is a water heater, the water heater includes a water heater body and a defrost control device, the water heater body includes an air source heat pump, i.e., the water heater is an air source heat pump water heater (fixed frequency water pump unit); in other words, the electronic device is a device in which the air source heat pump water heater and the defrost control device are integrally provided. In addition, the electronic device may be a floor heating or air conditioning device, and the specific type of the electronic device is not limited in this embodiment.
The electronic equipment provided by the embodiment of the application has the same beneficial effects as the defrosting control method.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:
acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data;
Comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently reached; the target detection reference value is determined according to the reference operation data of the product equipment in the standard operation state;
and when the current defrosting triggering condition is determined to be reached, controlling the defrosting device to execute corresponding defrosting operation.
The computer program product provided by the embodiment of the invention has the same beneficial effects as the defrosting control method.
It should be noted that, user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above 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 shall be subject to the appended claims.
Claims (13)
1. A defrosting control method, characterized by comprising:
acquiring current operation data of the product equipment in a current operation state, and determining current detection data according to the current operation data;
comparing the current detection data with a target detection reference value, and determining whether a defrosting triggering condition is currently achieved; the target detection reference value is determined according to the reference operation data of the product equipment in a standard operation state;
When the current defrosting triggering condition is determined to be reached, controlling a defrosting device to execute corresponding defrosting operation;
the determining method of the target detection reference value comprises the following steps:
acquiring reference operation data in a preset time period after the product equipment is started for the first time or started after the product equipment exits from defrosting control and the compressor reaches full frequency operation for the first time; starting up after the product equipment exits the defrosting control means restarting after the product equipment is shut down or restarting the defrosting control after the product equipment exits the defrosting control;
and determining a corresponding target detection reference value according to the reference operation data.
2. The defrosting control method according to claim 1, characterized in that the target detection reference value includes a target fan current value, a target outlet water temperature difference, and a target evaporator heat exchange temperature difference.
3. The defrost control method of claim 2, wherein the process of determining the target fan current value comprises:
and determining the fan current value of the product equipment in a standard running state as the target fan current value.
4. The defrost control method of claim 2, wherein determining the target outlet water temperature difference comprises:
And determining the target water outlet and return temperature difference according to the water outlet temperature and the water return temperature of the product equipment in the standard running state.
5. The defrost control method of claim 2, wherein the process of determining the target evaporator heat exchange temperature difference comprises:
determining the heat exchange temperature difference of the target evaporator according to the reference ambient temperature and the saturation temperature of the low-pressure sensor when the product equipment is in a standard running state; the reference ambient temperature is an ambient temperature of the product equipment in the standard operating state.
6. The defrost control method of claim 2, wherein determining that the defrost trigger condition is currently reached comprises:
and determining that the defrosting triggering condition is currently achieved when the first difference value between the current fan current value and the target fan current value is larger than a first threshold value, the second difference value between the target outlet water temperature difference and the current outlet water temperature difference is larger than a second threshold value, and the third difference value between the current evaporator heat exchange temperature difference and the target evaporator heat exchange temperature difference is larger than a third threshold value.
7. The defrosting control method according to any one of claims 1 to 6, characterized in that the method further comprises:
Setting a corresponding relation between the reference ambient temperature and the target detection reference value according to the reference ambient temperature;
and determining a target detection reference value corresponding to the current environment temperature according to the current environment temperature of the product equipment in the current running state and the corresponding relation.
8. The defrost control method of claim 7, further comprising:
and acquiring an environment temperature interval in which the reference environment temperature is located, and determining the corresponding relation between the reference environment temperature and the target detection reference value as the corresponding relation between the environment temperature interval and the target detection reference value.
9. A defrost control apparatus, the apparatus comprising:
the acquisition module is used for acquiring current operation data of the product equipment in a current operation state and determining current detection data according to the current operation data;
the comparison module is used for comparing the current detection data with a target detection reference value and determining whether the current defrosting triggering condition is reached or not; the target detection reference value is determined according to the reference operation data of the product equipment in a standard operation state;
The execution module is used for controlling the defrosting device to execute corresponding defrosting operation when the current defrosting triggering condition is determined to be reached;
the comparison module comprises:
the acquisition sub-module is used for acquiring reference operation data in a preset time period after the product equipment is started for the first time or started after the product equipment exits from defrosting control and the compressor reaches full frequency operation for the first time; starting up after the product equipment exits the defrosting control means restarting after the product equipment is shut down or restarting the defrosting control after the product equipment exits the defrosting control;
and the determining submodule is used for determining a corresponding target detection reference value according to the reference operation data.
10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 8 when the computer program is executed.
11. The defrosting control equipment is characterized by comprising computer equipment, an operation data acquisition device and a defrosting device, wherein the operation data acquisition device and the defrosting device are respectively in communication connection with the computer equipment; wherein,
The operation data acquisition device is used for acquiring operation data of the product equipment;
the computer equipment is used for determining a target detection reference value according to the reference operation data of the product equipment in the standard operation state; determining current detection data according to the current operation data of the product equipment in the current operation state; comparing the current detection data with the target detection reference value to determine whether a defrosting triggering condition is currently achieved; when the current defrosting triggering condition is determined to be reached, a defrosting control signal is sent to the defrosting device; the operation data comprises the reference operation data and the current operation data;
the defrosting device is used for executing corresponding defrosting operation according to the defrosting control signal;
wherein, the determining the target detection reference value according to the reference operation data of the product equipment in the standard operation state comprises the following steps: acquiring reference operation data in a preset time period after the product equipment is started for the first time or started after the product equipment exits from defrosting control and the compressor reaches full frequency operation for the first time; starting up after the product equipment exits the defrosting control means restarting after the product equipment is shut down or restarting the defrosting control after the product equipment exits the defrosting control; and determining a corresponding target detection reference value according to the reference operation data.
12. An electronic device comprising an electronic device body including a product device, characterized in that the electronic device further comprises the defrost control device of claim 11.
13. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 8.
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| JP6072901B2 (en) * | 2013-04-18 | 2017-02-01 | 三菱電機株式会社 | Heat pump device and air conditioning system |
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| CN103175353B (en) * | 2011-12-23 | 2015-08-19 | 同方人工环境有限公司 | A kind of defrosting control method being applicable to air source hot pump water heater |
| JP6447742B2 (en) * | 2015-10-27 | 2019-01-09 | 株式会社デンソー | Refrigeration cycle equipment |
| CN105910174B (en) * | 2016-04-13 | 2019-06-25 | 珠海格力电器股份有限公司 | It is a kind of for determining the condensation prevention control method, device and air-conditioning system of frequency machine |
| US20190310004A1 (en) * | 2016-12-01 | 2019-10-10 | Nidec Global Appliance Germany Gmbh | Method for operating a rotational-speed-variable refrigerant compressor |
| CN107461874B (en) * | 2017-07-03 | 2020-10-20 | 青岛海尔空调电子有限公司 | Air conditioner defrosting control method and air conditioner |
| CN109059374B (en) * | 2018-06-14 | 2020-09-15 | 浙江正理生能科技有限公司 | Defrosting control method for air source heat pump |
| CN109386966A (en) * | 2018-09-21 | 2019-02-26 | 珠海格力电器股份有限公司 | Defrosting control method, device, storage medium and the heat pump unit of heat pump unit |
| CN110017593B (en) * | 2019-03-11 | 2022-05-20 | 青岛海尔空调电子有限公司 | Air source heat pump unit, control method and device thereof and storage medium |
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| TW522209B (en) * | 2001-06-29 | 2003-03-01 | Sanyo Electric Co | Defrosting operation method for air conditioner and air conditioner using the same |
| JP6072901B2 (en) * | 2013-04-18 | 2017-02-01 | 三菱電機株式会社 | Heat pump device and air conditioning system |
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