CN114061186B

CN114061186B - Operating frequency control method and device of air source heat pump water heater

Info

Publication number: CN114061186B
Application number: CN202111428639.6A
Authority: CN
Inventors: 李思佳; 尚瑞; 陈志杰; 李天阳
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-11-11
Anticipated expiration: 2041-11-26
Also published as: CN114061186A

Abstract

The embodiment of the disclosure relates to an operation frequency control method and device of an air source heat pump water heater, wherein the method comprises the following steps: monitoring operation parameter information of the air source heat pump water heater, wherein the operation parameter information comprises at least one of the following items: the heating operation time, the target control temperature and the actual control temperature of the air source heat pump water heater are prolonged; determining whether the operating parameter information meets a predetermined temperature acquisition condition; under the condition that the operation parameter information meets the temperature obtaining condition, determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater; and if the difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is smaller than the preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater. By the method, the frosting on the surface of the outdoor heat exchanger of the air source heat pump water heater can be avoided.

Description

Operating frequency control method and device of air source heat pump water heater

Technical Field

The embodiment of the disclosure relates to the field of control, in particular to an operation frequency control method and device of an air source heat pump water heater.

Background

The principle of the air source heat pump water heater is as follows: the heat of the refrigerant is transferred to the circulating water through the heat exchanger, and the heated circulating water is sent to a user room through the water pump.

However, since the heat storage capacity of the water system is large, the water temperature of the air source heat pump water heater rises slowly when the air source heat pump water heater is started, and in order to enable the water temperature to rise quickly, the frequency of the compressor is directly increased to a high frequency when the air source heat pump water heater is started until a frequency reduction condition is triggered, and frequency reduction is carried out. However, in a low-temperature environment, because the air source heat pump water heater is rapidly operated in an up-conversion stage, the circulation amount of a refrigerant in the system is low, the evaporation pressure is rapidly reduced, the evaporation temperature corresponding to the evaporation pressure is also rapidly reduced, when the evaporation temperature is lower than the dew point temperature, condensation is generated on an evaporator at the outdoor side, and if the outdoor temperature is lower than 0 ℃, the surface of the evaporator is easily frosted.

Disclosure of Invention

In view of this, in order to solve some or all of the above technical problems, embodiments of the present disclosure provide a method and an apparatus for controlling an operating frequency of an air source heat pump water heater.

In a first aspect, an embodiment of the present disclosure provides a method for controlling an operating frequency of an air-source heat pump water heater, where the method includes:

monitoring the operation parameter information of the air source heat pump water heater, wherein the operation parameter information comprises at least one of the following items: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

determining whether the operating parameter information meets a predetermined temperature acquisition condition;

under the condition that the operation parameter information meets the temperature obtaining condition, determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater;

and if the difference between the surface temperature and the dew point temperature is smaller than a preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater.

Optionally, in the method according to any embodiment of the present disclosure, the operation parameter information includes a heating operation duration of the air source heat pump water heater, and the temperature obtaining condition includes that the heating operation duration is less than a preset first duration threshold; and

the determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of the outdoor heat exchanger of the air source heat pump water heater under the condition that the operation parameter information meets the temperature obtaining condition includes:

and under the condition that the heating operation time length is less than a preset first time length threshold value, determining a first dew point temperature of the position of the air source heat pump water heater and a first surface temperature of an outdoor heat exchanger of the air source heat pump water heater.

Optionally, in the method according to any embodiment of the present disclosure, the operation parameter information further includes: the target control temperature is set for the air source heat pump water heater, and the actual control temperature of the air source heat pump water heater is set for the air source heat pump water heater; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

the method further comprises the following steps:

determining a second dew point temperature of the position of the air source heat pump water heater and a second surface temperature of an outdoor heat exchanger of the air source heat pump water heater under the condition that the heating operation time is longer than the preset first time threshold value and the difference between the target control temperature and the actual control temperature is smaller than or equal to a preset second temperature difference value;

and if the difference between the second surface temperature and the second dew point temperature is smaller than the preset first temperature difference, reducing the operating frequency of the air source heat pump water heater.

Optionally, in a method of any embodiment of the present disclosure, the method further includes:

if the difference between the second surface temperature and the second dew point temperature is greater than or equal to the preset first temperature difference, controlling the air source heat pump water heater to operate according to the current operating frequency; and/or

If the difference between the target control temperature and the actual control temperature is larger than a preset second temperature difference value, the operation frequency of the air source heat pump water heater is determined again based on the actual control temperature; and controlling the air source heat pump water heater to operate according to the determined operation frequency.

Optionally, in the method according to any embodiment of the present disclosure, if a difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value, the method further includes:

monitoring the frequency modulation operation time length of the air source heat pump water heater operating according to the determined operation frequency;

after the frequency modulation operation time reaches a preset second time threshold, acquiring the actual control temperature of the air source heat pump water heater again;

and determining the operating frequency of the air source heat pump water heater based on the obtained actual control temperature, the obtained target control temperature and the preset second temperature difference.

Optionally, in the method of any embodiment of the present disclosure, the method further includes:

if the difference between the first surface temperature and the first dew point temperature is greater than or equal to the preset first temperature difference, the operation frequency of the air source heat pump water heater is determined again based on the actual control temperature;

and controlling the air source heat pump water heater to operate according to the determined operation frequency.

monitoring the current frequency operation time length of the air source heat pump water heater operating according to the current operation frequency;

determining the current heating operation time length of the air source heat pump water heater after the current frequency operation time length reaches a preset third time length threshold value;

and re-determining the operating frequency of the air source heat pump water heater based on the current heating operation time.

In a second aspect, an embodiment of the present disclosure provides an operation frequency control device for an air source heat pump water heater, where the device includes:

a first monitoring unit configured to monitor operation parameter information of the air source heat pump water heater, wherein the operation parameter information includes at least one of: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

a first determination unit configured to determine whether the operation parameter information satisfies a predetermined temperature acquisition condition;

a second determining unit configured to determine a dew point temperature of a location where the air source heat pump water heater is located and a surface temperature of an outdoor heat exchanger of the air source heat pump water heater, in a case where the operation parameter information satisfies the temperature obtaining condition;

a first frequency adjustment unit configured to decrease the operating frequency of the air source heat pump water heater if the difference between the surface temperature and the dew point temperature is less than a preset first temperature difference value.

Optionally, in the apparatus according to any embodiment of the present disclosure, the operation parameter information includes a heating operation duration of the air source heat pump water heater, and the temperature obtaining condition includes that the heating operation duration is less than a preset first time threshold; and

Optionally, in an apparatus according to any embodiment of the present disclosure, the operation parameter information further includes: the target control temperature is set for the air source heat pump water heater, and the actual control temperature of the air source heat pump water heater is set for the air source heat pump water heater; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

the above-mentioned device still includes:

a third determining unit, configured to determine a second dew point temperature of a location where the air source heat pump water heater is located and a second surface temperature of an outdoor heat exchanger of the air source heat pump water heater when the heating operation time length is greater than the preset first time length threshold value and a difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value;

and the second frequency adjusting unit is configured to reduce the operating frequency of the air source heat pump water heater if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is less than the preset first temperature difference value.

Optionally, in an apparatus according to any embodiment of the present disclosure, the apparatus further includes:

a first control unit configured to control the air source heat pump water heater to operate according to a current operating frequency if a difference between a second surface temperature of an outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is greater than or equal to the preset first temperature difference value; and/or

A fourth determination unit configured to re-determine an operating frequency of the air source heat pump water heater based on the actual control temperature if a difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value; and controlling the air source heat pump water heater to operate according to the determined operation frequency.

Optionally, in an apparatus according to any embodiment of the present disclosure, if a difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value, the apparatus further includes:

the second monitoring unit is configured to monitor the frequency modulation operation time length of the air source heat pump water heater operating according to the re-determined operation frequency;

the obtaining unit is configured to obtain the actual control temperature of the air source heat pump water heater again after the frequency modulation operation time reaches a preset second time threshold;

a fifth determining unit configured to determine an operating frequency of the air-source heat pump water heater based on the re-acquired actual control temperature, the target control temperature, and the preset second temperature difference.

a sixth determining unit configured to re-determine the operating frequency of the air source heat pump water heater based on the actual control temperature if a difference between a first surface temperature of an outdoor heat exchanger of the air source heat pump water heater and the first dew point temperature is greater than or equal to the preset first temperature difference value;

and the second control unit is configured to control the air source heat pump water heater to operate according to the determined operation frequency.

the third monitoring unit is configured to monitor the current frequency operation time length of the air source heat pump water heater operating according to the current operation frequency;

a seventh determining unit, configured to determine a current heating operation time length of the air source heat pump water heater after the current frequency operation time length reaches a preset third time length threshold;

and an eighth determining unit configured to re-determine the operating frequency of the air-source heat pump water heater based on the current heating operation time period.

In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

a memory for storing a computer program;

and a processor for executing the computer program stored in the memory, and when the computer program is executed, implementing the method of any one of the embodiments of the method for controlling the operating frequency of the air source heat pump water heater of the first aspect of the present disclosure.

In a fourth aspect, embodiments of the present disclosure provide a computer readable medium, where a computer program, when executed by a processor, implements the method of any of the embodiments of the method for controlling the operating frequency of an air-source heat pump water heater as described in the first aspect above.

In a fifth aspect, embodiments of the present disclosure provide a computer program comprising computer readable code which, when run on an apparatus, causes a processor in the apparatus to execute instructions for implementing the steps in the method according to any one of the embodiments of the method for controlling the operating frequency of an air source heat pump water heater according to the first aspect.

According to the control scheme provided by the embodiment of the disclosure, the operation parameter information of the air source heat pump water heater is monitored, wherein the operation parameter information comprises at least one of the following items: the method comprises the steps of setting the air source heat pump water heater, setting the target control temperature of the air source heat pump water heater and the actual control temperature of the air source heat pump water heater, determining whether the operation parameter information meets a predetermined temperature obtaining condition, determining the dew point temperature of the position where the air source heat pump water heater is located and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater under the condition that the operation parameter information meets the temperature obtaining condition, and finally reducing the operation frequency of the air source heat pump water heater if the difference between the surface temperature and the dew point temperature is smaller than a preset first temperature difference value. According to the method, the operation frequency of the air source heat pump water heater is determined through at least one of the heating operation time length, the target control temperature and the actual control temperature of the air source heat pump water heater, and the occurrence of the frosting condition of the surface of the outdoor heat exchanger of the air source heat pump water heater is avoided.

Drawings

Fig. 1 is a schematic flowchart of an operation frequency control method of an air source heat pump water heater according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of another method for controlling the operating frequency of an air source heat pump water heater according to an embodiment of the present disclosure;

fig. 3A is a schematic flowchart of another operation frequency control method of an air-source heat pump water heater according to an embodiment of the disclosure;

fig. 3B is a schematic structural diagram of an air source heat pump water heater provided in the embodiment of the disclosure;

fig. 3C is a schematic flow chart of an application scenario of the operation frequency control method of the air source heat pump water heater according to the embodiment of the disclosure;

fig. 4 is a schematic structural diagram of an operation frequency control device of an air source heat pump water heater according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

It will be understood by those within the art that the terms "first," "second," and the like in the embodiments of the present disclosure are used only for distinguishing between different steps, devices, or modules, and do not denote any particular technical meaning or order therebetween.

It is also understood that in embodiments of the present disclosure, "a plurality" may refer to two or more and "at least one" may refer to one, two or more.

It is also to be understood that any reference to any component, data, or structure in the embodiments of the disclosure, may be generally understood as one or more, unless explicitly defined otherwise or stated otherwise.

In addition, the term "and/or" in the present disclosure is only one kind of association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B, may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in the present disclosure generally indicates that the former and latter associated objects are in an "or" relationship.

It should also be understood that the description of the embodiments in the present disclosure emphasizes the differences between the embodiments, and the same or similar parts may be referred to each other, and are not repeated for brevity.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that, in the present disclosure, the embodiments and features of the embodiments may be combined with each other without conflict. For the purpose of facilitating an understanding of the embodiments of the present disclosure, the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with the embodiments. It is to be understood that the described embodiments are only a few, and not all, of the disclosed embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Fig. 1 is a schematic flow chart of an operation frequency control method of an air source heat pump water heater according to an embodiment of the present disclosure, and as shown in fig. 1, the method specifically includes:

101. and monitoring the operation parameter information of the air source heat pump water heater.

In this embodiment, an execution main body of the operation frequency control method of the air source heat pump water heater (for example, the air source heat pump water heater, a control unit disposed in the air source heat pump water heater, an operation frequency control device of the air source heat pump water heater, an electronic device (for example, a server) communicatively connected to the air source heat pump water heater, and the like) may monitor the operation parameter information of the air source heat pump water heater.

Wherein the operation parameter information includes at least one of: the air source heat pump water heater comprises the following components of heating operation time of the air source heat pump water heater, target control temperature set for the air source heat pump water heater and actual control temperature of the air source heat pump water heater.

As an example, the execution main body may periodically obtain the operation parameter information of the air source heat pump water heater, or may obtain the operation parameter information of the air source heat pump water heater only when a certain condition is satisfied.

102. And determining whether the operating parameter information meets a predetermined temperature acquisition condition.

In this embodiment, the executing body may determine whether the operating parameter information satisfies a predetermined temperature acquiring condition.

The temperature obtaining condition may be configured to determine whether to obtain a dew point temperature of a location of the air source heat pump water heater and a surface temperature of an outdoor heat exchanger of the air source heat pump water heater based on the operation parameter information.

As an example, if the above-mentioned operation parameter information includes: the heating operation time of the air source heat pump water heater is long, and then the temperature obtaining condition may include: the heating operation time length is less than a preset first time length threshold value.

As another example, if the above-mentioned operation parameter information includes: the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater may be obtained by: the heating operation time period is less than a preset first time period threshold (e.g., 30 minutes), and a difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference (e.g., 5 degrees celsius).

103. And under the condition that the operation parameter information meets the temperature obtaining condition, determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater.

In this embodiment, when the operation parameter information satisfies the temperature obtaining condition, the execution main body may determine a dew point temperature of a location of the air-source heat pump water heater and a surface temperature of an outdoor heat exchanger of the air-source heat pump water heater.

In practice, the outdoor dry bulb temperature of the installation area of the air source heat pump water heater, namely the surface temperature of an outdoor heat exchanger of the air source heat pump water heater, can be obtained according to a positioning module of the air source heat pump water heater; in addition, the relative humidity of the installation area of the air source heat pump water heater is obtained according to the positioning module, and the dew point temperature can be calculated according to the obtained outdoor dry bulb temperature and the relative humidity.

Here, the positioning module may be connected with the control unit of the air source heat pump water heater through a communication line.

104. And if the difference between the surface temperature and the dew point temperature is smaller than a preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater.

In this embodiment, if the difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is smaller than a preset first temperature difference value, the execution main body may decrease the operating frequency of the air source heat pump water heater.

As an example, the execution body may decrease the current operating frequency of the air source heat pump water heater by a preset frequency threshold, or divide the current operating frequency of the air source heat pump water heater by a preset positive integer, so as to decrease the operating frequency of the air source heat pump water heater.

In some optional implementation manners of this embodiment, the execution main body may further perform the following steps:

firstly, monitoring the current frequency operation duration of the air source heat pump water heater operating according to the current operation frequency.

And then, after the current frequency operation time reaches a preset third time threshold (for example, 30 seconds), determining the current heating operation time of the air source heat pump water heater.

In some cases, the current heating operation time may be the air source heat pump water heater

And then, based on the current heating operation time length, the operation frequency of the air source heat pump water heater is determined again.

As an example, the executing body may re-determine the operating frequency of the air-source heat pump water heater based on the current heating operation duration in the following manner:

firstly, under the condition that the current heating operation time length is less than the preset first time length threshold value, determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater.

And then, if the difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is smaller than the preset first temperature difference, reducing the operating frequency of the air source heat pump water heater.

Here, the specific implementation manner of the above steps may refer to the above related description, and is not described herein again.

The operation frequency control method of the air source heat pump water heater provided by the embodiment of the disclosure monitors the operation parameter information of the air source heat pump water heater, wherein the operation parameter information includes at least one of the following items: the method comprises the steps of prolonging the heating operation time of the air source heat pump water heater, setting a target control temperature aiming at the air source heat pump water heater and an actual control temperature of the air source heat pump water heater, then determining whether the operation parameter information meets a predetermined temperature obtaining condition, then determining the dew point temperature of the position where the air source heat pump water heater is located and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater under the condition that the operation parameter information meets the temperature obtaining condition, and finally reducing the operation frequency of the air source heat pump water heater if the difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is smaller than a preset first temperature difference value. According to the method, the operation frequency of the air source heat pump water heater is determined through at least one of the heating operation time length, the target control temperature and the actual control temperature of the air source heat pump water heater, and the occurrence of the frosting condition of the surface of the outdoor heat exchanger of the air source heat pump water heater is avoided.

Fig. 2 is a schematic flow chart of another method for controlling the operating frequency of an air source heat pump water heater according to an embodiment of the present disclosure, and as shown in fig. 2, the method specifically includes:

201. and monitoring the heating operation time of the air source heat pump water heater.

In this embodiment, an execution main body of the operation frequency control method of the air-source heat pump water heater (for example, the air-source heat pump water heater, a control unit disposed in the air-source heat pump water heater, an operation frequency control device of the air-source heat pump water heater, an electronic device (for example, a server) communicatively connected to the air-source heat pump water heater, and the like) may monitor a heating operation duration of the air-source heat pump water heater.

202. And determining that the heating operation time length is smaller than a preset first time length threshold value.

In this embodiment, the execution main body may determine that the heating operation time period is less than a preset first time period threshold.

The time length corresponding to the first time length threshold value is preset and is the time length corresponding to the time length from starting to frosting failure of the air source heat pump water heater.

203. And under the condition that the heating operation time length is less than a preset first time length threshold value, determining a first dew point temperature of the position of the air source heat pump water heater and a first surface temperature of an outdoor heat exchanger of the air source heat pump water heater.

In this embodiment, when the heating operation time length is less than a preset first time length threshold, the execution main body may determine a dew point temperature of a location where the air source heat pump water heater is located as a first dew point temperature, and determine a surface temperature of an outdoor heat exchanger of the air source heat pump water heater as a first surface temperature.

204. And if the difference between the first surface temperature and the first dew point temperature is smaller than a preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater.

In this embodiment, if a difference between the first surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the first dew point temperature is smaller than a preset first temperature difference value, the executing body may decrease the operating frequency of the air source heat pump water heater.

In some optional implementation manners of this embodiment, the operation parameter information further includes: the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater. The temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value.

On this basis, the execution main body can also execute the following steps:

firstly, when the heating operation time length is greater than the preset first time length threshold value, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value, determining the dew point temperature of the position where the air source heat pump water heater is located as a second dew point temperature, and determining the surface temperature of the outdoor heat exchanger of the air source heat pump water heater as a second surface temperature.

And then, if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is smaller than the preset first temperature difference, reducing the operating frequency of the air source heat pump water heater.

In some application scenarios in the above optional implementation manners, if a difference between a second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is greater than or equal to the preset first temperature difference, the execution main body may further control the air source heat pump water heater to operate according to the current operating frequency.

In some application scenarios in the above-mentioned alternative implementation, if the difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value, the execution main body may further re-determine the operating frequency of the air source heat pump water heater based on the actual control temperature, and control the air source heat pump water heater to operate according to the re-determined operating frequency.

In some cases, if the difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value, the executing body may further perform the following steps to re-determine the operating frequency of the air source heat pump water heater:

firstly, monitoring the frequency modulation operation time length of the air source heat pump water heater operating according to the redetermined operation frequency.

And then, after the frequency modulation operation time reaches a preset second time threshold (for example, 30 seconds), acquiring the actual control temperature of the air source heat pump water heater again.

And finally, determining the operating frequency of the air source heat pump water heater based on the actual control temperature, the target control temperature and the preset second temperature difference which are obtained again.

As an example, if the operation parameter information further includes: a target control temperature set for the air source heat pump water heater and an actual control temperature of the air source heat pump water heater; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value. Then, the executing body may further re-determine the operating frequency of the air source heat pump water heater based on the actual control temperature in the following manner:

firstly, under the condition that the heating operation time length is longer than the preset first time length threshold value, and the difference between the target control temperature and the actual control temperature is smaller than or equal to a preset second temperature difference value, determining the dew point temperature of the position where the air source heat pump water heater is located as a second dew point temperature, and determining the surface temperature of the outdoor heat exchanger of the air source heat pump water heater as a second surface temperature.

In some optional implementations of this embodiment, if a difference between the first surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the first dew point temperature is greater than or equal to the preset first temperature difference, the executing main body may further perform the following steps:

firstly, the operation frequency of the air source heat pump water heater is determined again based on the actual control temperature.

It should be noted that, in addition to the contents described above, this embodiment may also be performed in a manner described in the embodiment corresponding to fig. 1, so as to include the features described in the embodiment corresponding to fig. 1, and generate the effects described in the embodiment corresponding to fig. 1, which is not described again here.

According to the operation frequency control method of the air source heat pump water heater provided by the embodiment of the disclosure, under the condition that the heating operation time is less than the preset first time threshold, the dew point temperature of the position where the air source heat pump water heater is located and the surface temperature of the outdoor heat exchanger of the air source heat pump water heater are determined, and then whether the operation frequency of the air source heat pump water heater is reduced or not is determined. Therefore, the frosting on the surface of the outdoor heat exchanger of the air source heat pump water heater is further avoided.

Fig. 3A is a schematic flowchart of another method for controlling an operating frequency of an air source heat pump water heater according to an embodiment of the present disclosure, where the method may be applied to an application scenario of the air source heat pump water heater. The method can be applied to electronic equipment such as an air source heat pump water heater, a control unit arranged in the air source heat pump water heater, an operation frequency control device of the air source heat pump water heater, electronic equipment (such as a server) in communication connection with the air source heat pump water heater and the like.

As further shown in fig. 3A, the method specifically includes:

referring to fig. 3B, fig. 3B is a schematic structural diagram of an air source heat pump water heater according to an embodiment of the disclosure. In fig. 3B, the air source heat pump water heater includes a water outlet temperature sensing bulb 1, a gas-liquid separator 2, an indoor heat exchanger 3, a water pump 4, an outdoor heat exchanger 5, a liquid storage 6, a compressor 7, an electronic expansion valve 8, a defrosting temperature sensing bulb 9, a four-way reversing valve 10, a water inlet temperature sensing bulb 11, an air source heat pump water heater control unit 12, a positioning module 13, and a communication line 14.

The air source heat pump water heater may obtain the temperature T1 of the surface of the outdoor heat exchanger 5 (that is, the surface temperature of the outdoor heat exchanger of the air source heat pump water heater, the first surface temperature of the outdoor heat exchanger of the air source heat pump water heater, and the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater) according to the defrosting bulb 9 on the outdoor heat exchanger 5. In addition, the air source heat pump water heater can obtain the control target temperature T of the air source heat pump water heater according to the water outlet temperature sensing bulb 1 or the water inlet temperature sensing bulb 11 _{Water (W)} (i.e., the actual control temperature described above). The specific temperature bulb used to measure the temperature may depend on the control objective of the air source heat pump water heater.

The air source heat pump water heater can obtain the outdoor dry bulb temperature T2 and the relative humidity of the installation area of the air source heat pump water heater according to the positioning module 13

According to the obtained outdoor dry bulb temperature T2 and the relative humidity

The dew point temperature Td may be calculated. In addition, the positioning module 13 is connected with the control unit 12 through a communication line 14, and the control unit 12 is connected with the defrosting bulb 9 of the outdoor heat exchanger 5.

When heating is started, high-temperature and high-pressure refrigerant gas discharged by the compressor 7 enters the indoor heat exchanger 3 through the four-way reversing valve 10 to exchange heat with circulating water. The refrigerant is condensed into refrigerant liquid, and the circulating water sends the part of heat to the tail end for heating. Refrigerant liquid enters the liquid storage device 6 after being throttled by the electronic expansion valve 8, then enters the outdoor heat exchanger 5, exchanges heat in the outdoor heat exchanger, absorbs heat of outdoor environment, is evaporated into refrigerant gas, returns to the four-way reversing valve 10, enters the gas-liquid separator 2 for gas-liquid separation, and then returns to the compressor 7, so that one cycle is completed.

The air source heat pump water heater is in heating operation, the operation frequency of the compressor 7 is increased, the evaporation pressure is reduced, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

Based on the outdoor dry bulb temperature T2 and the relative humidity

The dew point Td (i.e. the above dew point temperature, the first dew point temperature, the second dew point temperature) of the current air, i.e. the temperature at which the water vapor in the air is saturated, is calculated. Reading the temperature T1 of the defrosting bulb 9 on the outdoor heat exchanger 5, reading the heating operation time T (namely the heating operation time), and judging whether the heating operation time T is more than or equal to delta T (delta T can be 30 minutes). Wherein Δ t is the preset first duration threshold.

If the condition is not satisfied, comparing the temperature T1 of the surface of the outdoor heat exchanger 5 with the dew point temperature Td: if T1 is greater than or equal to Td + Δ T (Δ T may be 2 degrees celsius, i.e., the preset first temperature difference), the compressor 7 automatically adjusts the compressor frequency based on the target water temperature (i.e., the target control temperature), i.e., it is determined that the frost is not easily formed. After Δ T1 (Δ T is much greater than Δ T1, Δ T1 may be 30 seconds, and Δ T1 is the second duration threshold), the cycle is re-entered, and the outdoor dry bulb temperature T2 and the relative humidity are obtained by the positioning module 13

And reading the temperature T1 of the defrosting bulb on the outdoor heat exchanger and the heating running time T for judgment until the T is more than or equal to delta T, and entering the next logic judgment. If T1 ≧ Td + Δ T is not satisfied, the compressor frequency is limited and the compressor frequency is reduced by Δ F1 (Δ F1 can be 5 Hz). After the time delta T1, the circulation is re-entered, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

And reading the temperature T1 of the defrosting bulb on the outdoor heat exchanger and the heating running time T for judgment until the T is more than or equal to delta T, and entering the next logic judgment.

If T is larger than or equal to delta T, acquiring the temperature T of the control target of the air source heat pump water heater according to the control target of the air source heat pump water heater _{Water (W)} (i.e., the above-mentioned actual control temperature), the target water temperature T is judged _Target (i.e. the target control temperature) and the control target temperature T of the air source heat pump water heater _{Water (I)} : if T is satisfied _Target -T _{Water (W)} Δ X (Δ X can be 5 degrees centigrade, namely the preset second temperature difference value) is equal to or less than Δ X, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

Comparing the temperature T1 and the dew point temperature Td of the outdoor heat exchanger surface: and if T1 is more than or equal to Td + delta T, keeping the current frequency of the air source heat pump water heater. After the time delta T1, the circulation is re-entered, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

Reading the temperature T1 of a defrosting temperature sensing bulb 9 on the outdoor heat exchanger 5 and the heating running time T for judgment; if T1 is not more than or equal to Td + delta T, limiting the frequency of the compressor, and reducing the frequency of the compressor by delta F1. After the time delta T1, the outdoor dry bulb temperature T2 and the relative humidity are obtained again through the positioning module

And reading the temperature T1 of the defrosting bulb on the outdoor heat exchanger and the heating running time T for judgment, and entering circulation.

If T is not satisfied _Target -T _{Water (W)} Δ X, the compressor 7 may automatically adjust the compressor frequency based on the target water temperature. After delta T2 time, the control target temperature T of the air source heat pump water heater is obtained again _{Water (W)} Continuously judging whether T is satisfied _Target -T _{Water (W)} Less than or equal to delta X, entering circulation.

As an example, please refer to fig. 3C, and fig. 3C is a schematic flowchart of an application scenario of the operation frequency control method of the air source heat pump water heater according to the embodiment of the present disclosure.

In fig. 3C, taking the actual operation state of a certain air source heat pump water heater in a certain day as an example, the air source heat pump water heater performs heating operation, the frequency of the compressor 7 is increased, the evaporation pressure is reduced, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

Calculating the dew point temperature as Td, reading the surface temperature T1 of the outdoor heat exchanger and the running time T of the air source heat pump water heater, judging that the running time does not meet T is not less than delta T, continuously judging the sizes of the surface temperature T1 of the heat exchanger and the dew point temperature Td, meeting the condition that T1 is not less than Td + delta T, and automatically adjusting the frequency of the compressor 7 based on the target water temperature according to the original control logic of the air source heat pump water heater.

After the time delta T1, the outdoor dry bulb temperature T2 and the relative humidity are acquired again

Calculating the dew point temperature Td, reading the surface temperature T1 of the outdoor heat exchanger and the running time T of the air source heat pump water heater, judging that the running time does not meet T and delta T, continuously judging the sizes of the surface temperature T1 of the heat exchanger and the dew point temperature Td, and if the running time does not meet T1 and delta T, limiting the frequency of the compressor and reducing the frequency of the compressor by delta F1. After delta T1 time, obtaining the outdoor dry bulb temperature T2 and the relative humidity through a positioning module

Calculating the dew point temperature as Td, reading the surface temperature T1 of the outdoor heat exchanger and the running time T of the air source heat pump water heater, judging that the running time meets T is more than or equal to delta T, and obtaining the control target temperature T of the air source heat pump water heater _{Water (I)} Judging the target water temperature T _Target Controlling target temperature T with air source heat pump water heater _{Water (I)} Difference of (d) not satisfying T _Target -T _{Water (W)} And the frequency of the compressor 7 is automatically adjusted based on the target water temperature according to the original control logic of the air source heat pump water heater.

After delta T2 time, acquiring the control target temperature T of the air source heat pump water heater _{Water (W)} Continuously judging whether T is satisfied _Target -T _{Water (W)} Less than or equal to delta X, the condition is judged to be met, and the outdoor dry bulb temperature T2 and the relative humidity are obtained through the positioning module 13

Calculating the dew point temperature Td, reading the surface temperature T1 of the outdoor heat exchanger, comparing the surface temperature T1 of the outdoor heat exchanger with the dew point temperature Td, and limiting the frequency of the compressor when the temperature T1 is not more than or equal to Td + delta T and the frequency of the compressor is reduced by delta F1.

Calculating the dew point temperature Td, reading the surface temperature T1 of the outdoor heat exchanger and the running time T of the air source heat pump water heater, judging whether the running time T is larger than or equal to delta T, and judging the target water temperature T _Target Controlling target temperature T with air source heat pump water heater _{Water (W)} Difference of (d) not satisfying T _Target -T _{Water (W)} And when the temperature is less than or equal to delta X, the compressor automatically adjusts the frequency of the compressor based on the target water temperature according to the original control logic of the air source heat pump water heater.

After delta T2 time, acquiring the control target temperature T of the air source heat pump water heater _{Water (W)} Judging whether T is satisfied _Target -T _{Water (I)} Less than or equal to delta X, judging that the condition is met, and obtaining the outdoor dry-bulb temperature T2 and the relative humidity through a positioning module

And calculating the dew point temperature Td, reading the surface temperature T1 of the outdoor heat exchanger, comparing the outdoor environment temperature T1 with the dew point temperature Td, satisfying that T1 is more than or equal to Td + delta T, and keeping the current frequency.

According to the operation frequency control method of the air source heat pump water heater, a new control mode and an interaction mode are adopted, the air source heat pump water heater is controlled in different time periods according to the operation time of the air source heat pump water heater, the environmental temperature and the relative humidity of the installation position of the heat pump water heater can be obtained through the positioning module, and the dew point temperature of air is calculated in real time. According to the running state of the air source heat pump water heater, the frequency of the compressor is controlled, so that the evaporating temperature is kept higher than the dew point temperature when the air source heat pump water heater is started, and the condition that the evaporating temperature is too low and frosting occurs due to the fact that the air source heat pump water heater is started and runs at high frequency is avoided. After the air source heat pump water heater is stable, the frequency of the compressor is controlled under the condition that the normal operation of the air source heat pump water heater is ensured, and the possibility of frosting is reduced.

Fig. 4 is a schematic structural diagram of an operation frequency control device of an air source heat pump water heater according to an embodiment of the present disclosure, specifically including:

a first monitoring unit 401 configured to monitor operation parameter information of the air source heat pump water heater, wherein the operation parameter information includes at least one of: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

a first determination unit 402 configured to determine whether the operation parameter information satisfies a predetermined temperature acquisition condition;

a second determining unit 403, configured to determine a dew point temperature of a location where the air source heat pump water heater is located and a surface temperature of an outdoor heat exchanger of the air source heat pump water heater when the operation parameter information satisfies the temperature obtaining condition;

a first frequency adjustment unit 404 configured to decrease the operating frequency of the air source heat pump water heater if a difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is less than a preset first temperature difference value.

Optionally, in an apparatus according to any embodiment of the present disclosure, the operating parameter information further includes: the target control temperature is set for the air source heat pump water heater, and the actual control temperature of the air source heat pump water heater is set for the air source heat pump water heater; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

the above-mentioned device still includes:

a third determining unit (not shown in the figure), configured to determine a second dew point temperature of the position where the air source heat pump water heater is located and a second surface temperature of an outdoor heat exchanger of the air source heat pump water heater in a case that the heating operation time length is greater than the preset first time length threshold value, and a difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value;

and a second frequency adjustment unit (not shown in the figure) configured to reduce the operating frequency of the air source heat pump water heater if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is less than the preset first temperature difference value.

a first control unit (not shown in the figure) configured to control the air source heat pump water heater to operate according to the current operating frequency if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is greater than or equal to the preset first temperature difference value; and/or

A fourth determining unit (not shown in the figures) configured to re-determine the operating frequency of the air source heat pump water heater based on the actual control temperature if the difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value; and controlling the air source heat pump water heater to operate according to the determined operation frequency.

a second monitoring unit (not shown in the figure) configured to monitor a frequency modulation operation time length for the air source heat pump water heater to operate according to the re-determined operation frequency;

the obtaining unit (not shown in the figure) is configured to obtain the actual control temperature of the air source heat pump water heater again after the frequency modulation operation time reaches a preset second time threshold;

and a fifth determining unit (not shown in the figures) configured to determine the operating frequency of the air source heat pump water heater based on the re-acquired actual control temperature, the target control temperature and the preset second temperature difference.

a sixth determining unit (not shown in the figures) configured to, if a difference between the first surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the first dew point temperature is greater than or equal to the preset first temperature difference, re-determine the operating frequency of the air source heat pump water heater based on the actual control temperature;

and a second control unit (not shown) configured to control the air source heat pump water heater to operate according to the determined operation frequency.

a third monitoring unit (not shown in the figure) configured to monitor a current frequency operation duration of the air source heat pump water heater operating according to the current operation frequency;

a seventh determining unit (not shown in the figures) configured to determine a current heating operation time length of the air source heat pump water heater after the current frequency operation time length reaches a preset third time length threshold;

an eighth determining unit (not shown in the figures) configured to re-determine the operating frequency of the air-source heat pump water heater based on the current heating operation time period.

The operation frequency control device of the air source heat pump water heater provided in this embodiment may be the operation frequency control device of the air source heat pump water heater shown in fig. 4, and may perform all steps of the operation frequency control method of the air source heat pump water heater shown in fig. 1 to 3C, so as to achieve the technical effect of the operation frequency control method of the air source heat pump water heater shown in fig. 1 to 3C, and refer to the related description of fig. 1 to 3C specifically, for brevity, no further description is given here.

Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device 500 shown in fig. 5 includes: at least one processor 501, memory 502, at least one network interface 504, and other user interfaces 503. The various components in the electronic device 500 are coupled together by a bus system 505. It is understood that the bus system 505 is used to enable connection communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 505 in FIG. 5.

The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 502 in embodiments of the present disclosure may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 502 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 502 stores elements, executable units or data structures, or a subset thereof, or an expanded set thereof as follows: an operating system 5021 and application programs 5022.

The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 5022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of the embodiments of the present disclosure may be included in the application program 5022.

In the embodiment of the present disclosure, by calling a program or an instruction stored in the memory 502, specifically, a program or an instruction stored in the application 5022, the processor 501 is configured to execute the method steps provided by the method embodiments, for example, including:

monitoring operation parameter information of the air source heat pump water heater, wherein the operation parameter information comprises at least one of the following items: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

and if the difference between the surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the dew point temperature is smaller than a preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater.

Optionally, in a method according to any embodiment of the present disclosure, the operation parameter information further includes: the target control temperature is set for the air source heat pump water heater, and the actual control temperature of the air source heat pump water heater is set for the air source heat pump water heater; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

the method further comprises the following steps:

and if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is smaller than the preset first temperature difference, reducing the operating frequency of the air source heat pump water heater.

if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is greater than or equal to the preset first temperature difference value, controlling the air source heat pump water heater to operate according to the current operating frequency; and/or

if the difference between the first surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the first dew point temperature is greater than or equal to the preset first temperature difference value, the operation frequency of the air source heat pump water heater is determined again based on the actual control temperature;

and re-determining the operation frequency of the air source heat pump water heater based on the current heating operation time.

The method disclosed by the embodiment of the present disclosure can be applied to the processor 501, or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 501. The Processor 501 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present disclosure may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present disclosure may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software elements in the decoding processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the method in combination with the hardware.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the Processing units may be implemented in one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, remote controllers, micro-remote controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented by means of units performing the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The electronic device provided in this embodiment may be the electronic device shown in fig. 5, and may execute all steps of the operation frequency control method of the air source heat pump water heater shown in fig. 1 to 3C, so as to achieve the technical effect of the operation frequency control method of the air source heat pump water heater shown in fig. 1 to 3C, which is described with reference to fig. 1 to 3C for brevity, and is not described herein again.

The disclosed embodiments also provide a storage medium (computer-readable storage medium). The storage medium herein stores one or more programs. Among others, the storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of the above kinds of memories.

When the one or more programs in the storage medium are executed by the one or more processors, the method for controlling the operating frequency of the air-source heat pump water heater implemented on the electronic device side is implemented.

The processor is used for executing the control program stored in the memory so as to realize the following steps of the operation frequency control method of the air source heat pump water heater executed on the electronic equipment side:

the method further comprises the following steps:

if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is larger than or equal to the preset first temperature difference, controlling the air source heat pump water heater to operate according to the current operating frequency; and/or

after the frequency modulation operation time length reaches a preset second time length threshold value, acquiring the actual control temperature of the air source heat pump water heater again;

and determining the operating frequency of the air source heat pump water heater based on the actual control temperature, the target control temperature and the preset second temperature difference which are obtained again.

monitoring the current frequency operation duration of the air source heat pump water heater operating according to the current operation frequency;

determining the current heating operation time of the air source heat pump water heater after the current frequency operation time reaches a preset third time threshold;

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above-mentioned embodiments, objects, technical solutions and advantages of the present disclosure are described in further detail, it should be understood that the above-mentioned embodiments are merely illustrative of the present disclosure and are not intended to limit the scope of the present disclosure, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims

1. An operation frequency control method of an air source heat pump water heater is characterized by comprising the following steps:

monitoring operating parameter information of the air source heat pump water heater, wherein the operating parameter information comprises at least one of: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

if the difference between the surface temperature and the dew point temperature is smaller than a preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater;

wherein the operating parameter information includes: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

determining the dew point temperature of the position of the air source heat pump water heater and the surface temperature of an outdoor heat exchanger of the air source heat pump water heater under the condition that the operation parameter information meets the temperature obtaining condition, wherein the determining comprises the following steps:

and if the difference between the second surface temperature of the outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is smaller than the preset first temperature difference value, reducing the operating frequency of the air source heat pump water heater.

2. The method according to claim 1, wherein the operation parameter information includes a heating operation duration of the air source heat pump water heater, and the temperature obtaining condition includes that the heating operation duration is less than a preset first time threshold; and

3. The method of claim 1, further comprising:

if the difference between the second surface temperature and the second dew point temperature is greater than or equal to the preset second temperature difference, controlling the air source heat pump water heater to operate according to the current operating frequency; and/or

4. The method of claim 3, wherein if the difference between the target control temperature and the actual control temperature is greater than a preset second temperature difference value, the method further comprises:

and determining the operating frequency of the air source heat pump water heater based on the obtained actual control temperature, the obtained target control temperature and the preset second temperature difference value.

5. The method of claim 2, further comprising:

if the difference between the first surface temperature and the first dew point temperature is larger than or equal to the preset second temperature difference value, re-determining the operating frequency of the air source heat pump water heater based on the actual control temperature;

6. The method according to one of claims 1 to 5, characterized in that the method further comprises:

and re-determining the operating frequency of the air source heat pump water heater based on the current heating operation time length.

7. An operation frequency control device of an air source heat pump water heater, characterized in that the device comprises:

a first monitoring unit configured to monitor operational parameter information of the air-source heat pump water heater, wherein the operational parameter information includes at least one of: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged;

a first frequency adjustment unit configured to reduce the operating frequency of the air source heat pump water heater if the difference between the surface temperature and the dew point temperature is less than a preset first temperature difference value;

the operating parameter information includes: the heating operation time of the air source heat pump water heater, the target control temperature set for the air source heat pump water heater and the actual control temperature of the air source heat pump water heater are prolonged; the temperature acquisition conditions include: the heating operation time length is less than a preset first time length threshold, and the difference between the target control temperature and the actual control temperature is less than or equal to a preset second temperature difference value; and

the device further comprises:

a second frequency adjustment unit configured to reduce the operating frequency of the air source heat pump water heater if a difference between a second surface temperature of an outdoor heat exchanger of the air source heat pump water heater and the second dew point temperature is less than the preset first temperature difference value.

8. An electronic device, comprising:

a memory for storing a computer program;

a processor for executing a computer program stored in the memory, and when executed, implementing the method of any of the preceding claims 1-6.

9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of the preceding claims 1 to 6.