Air source water heater control method and device, storage medium and air source water heater

Abstract

The invention discloses an air source water heater control method and device, a storage medium and an air source water heater, and relates to the technical field of water heaters, the method comprises the steps that when the opening degree of an electronic expansion valve is not in a preset opening degree interval, it is determined that the air source water heater enters a heat exchange amount adjusting mode; controlling the fan to increase or decrease the rotating speed of the fan so as to adjust the exhaust temperature of the compressor; and when the difference value of the exhaust temperature and the temperature of the hot water in the water tank is within a preset superheat degree interval, the fan is controlled to maintain the current rotating speed, and the heat exchange amount adjusting mode is quitted. The accuracy of compensating the heat exchange amount by adjusting the rotating speed of the draught fan in the air source water heater can be improved, and the use experience of a user is improved.

Description

Technical Field

[0001] This application relates to the technical field of water heaters, and particularly to a control method, device, storage medium and air source water heater for an air source water heater. Background Art

[0002] Currently, during the use of an air source water heater (i.e., an air source heat pump water heater), due to the use of the device, static pressure changes may occur due to factors such as device aging and dust accumulation on the fin heat exchanger. The change in static pressure will cause the air source water heater to absorb less air heat. In current solutions, static pressure is judged by factors such as fan current, and then the fan speed is adjusted to compensate for the heat exchange amount, but there is a problem of large error. Summary of the Invention

[0003] An embodiment of this application provides a control solution for an air source water heater, which can improve the accuracy of compensating the heat exchange amount by adjusting the fan speed in the air source water heater and enhance the user experience.

[0004] The embodiments of this application provide the following technical solutions:

[0005] According to an embodiment of this application, a control method for an air source water heater, wherein the method includes: when the opening degree of the electronic expansion valve is not within a preset opening degree range, determining that the air source water heater enters a heat exchange amount adjustment mode; controlling the fan to increase or decrease the fan speed to adjust the exhaust temperature of the compressor; when the difference between the exhaust temperature and the hot water temperature in the water tank is within a preset superheat range, controlling the fan to maintain the current speed and exiting the heat exchange amount adjustment mode.

[0006] In some embodiments of this application, the controlling the fan to increase or decrease the fan speed to adjust the exhaust temperature of the compressor includes: if the difference between the exhaust temperature and the hot water temperature is less than the lower limit value of the preset superheat range, adjusting the opening degree of the electronic expansion valve to the preset opening degree range; and controlling the fan to increase the fan speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value.

[0007] In some embodiments of this application, the controlling the fan to increase the fan speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value includes: determining a first target speed according to the exhaust temperature and the hot water temperature; raising the fan speed to the first target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is greater than or equal to the lower limit value.

[0008] In some embodiments of the present application, determining the first target speed according to the exhaust temperature and the hot water temperature includes: obtaining a first speed adjustment table; querying the first target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the first speed adjustment table.

[0009] In some embodiments of the present application, controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor includes: if the difference between the exhaust temperature and the hot water temperature is greater than the upper limit value of the preset superheat interval, adjusting the opening degree of the electronic expansion valve to the preset opening degree interval; and controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value of the interval.

[0010] In some embodiments of the present application, controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value of the interval includes: determining a second target speed according to the exhaust temperature and the hot water temperature; decreasing the blower speed to the second target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is less than or equal to the upper limit value of the interval.

[0011] In some embodiments of the present application, determining the second target speed according to the exhaust temperature and the hot water temperature includes: obtaining a second speed adjustment table; querying the second target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the second speed adjustment table.

[0012] According to an embodiment of the present application, an air source water heater control device includes: a memory storing a computer program; a processor reading the computer program stored in the memory to execute the method described in the embodiments of the present application.

[0013] According to another embodiment of the present application, a storage medium stores a computer program, and when the computer program is executed by a processor of an air source water heater control device, the computer is made to execute the method described in the embodiments of the present application.

[0014] According to another embodiment of the present application, an air source water heater may include an air source water heater control device.

[0015] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of the air source water heater control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to enable the air source water heater control device to execute the methods provided in the various alternative implementations described in the embodiments of the present application.

[0016] In the embodiments of the present application, when the opening degree of the electronic expansion valve is not within the preset opening degree range, it is determined that the air source water heater enters the heat exchange amount adjustment mode; the blower is controlled to increase or decrease the blower speed to adjust the exhaust temperature of the compressor; when the difference between the exhaust temperature and the hot water temperature in the water tank is within the preset superheat range, the blower is controlled to maintain the current speed and exit the heat exchange amount adjustment mode.

[0017] In the manner of the embodiments of the present application, first, it is judged to enter the heat exchange amount adjustment mode when the opening degree of the electronic expansion valve is not within the preset opening degree range, and then when it is judged that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank (i.e., the exhaust superheat) satisfies the preset superheat range, the heat exchange amount adjustment mode is exited, and the judgment accuracy will be higher, thereby improving the accuracy of compensating the heat exchange amount by adjusting the blower speed in the air source water heater and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0019] Figure 1 Shows a flowchart of an air source water heater control method according to an embodiment of the present application.

[0020] Figure 2 Shows a flowchart of blower speed adjustment according to an embodiment of the present application.

[0021] Figure 3 Shows a flowchart of blower speed adjustment according to another embodiment of the present application.

[0022] Figure 4 Shows a block diagram of an air source water heater control device according to an embodiment of the present application.

[0023] Figure 5 Shows a block diagram of a water heater according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not used to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than all embodiments for implementing the present disclosure. Without conflict, the technical solutions described in the embodiments of the present disclosure can be implemented in any combined manner.

[0025] It should be noted that in the embodiments of the present disclosure, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that a method or device including a series of elements not only includes the elements clearly recited, but also includes other elements not explicitly listed, or further includes elements inherent to the implementation of the method or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of other related elements in the method or device including the element (such as steps in the method or units in the device, and the units can be partial circuits, partial processors, partial programs or software, etc.).

[0026] For example, the air source water heater control method provided in the embodiments of the present disclosure includes a series of steps, but the air source water heater control method provided in the embodiments of the present disclosure is not limited to the recited steps. Similarly, the air source water heater control device provided in the embodiments of the present disclosure includes a series of units, but the device provided in the embodiments of the present disclosure is not limited to including the explicitly recited units, and may further include units required for obtaining relevant information or processing based on information.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0028] It can be understood that in the specific implementation of this application, when it comes to relevant data, when the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use, and processing of relevant data need to comply with relevant laws, regulations, and standards of relevant countries and regions.

[0029] Figure 1 The flowchart of the air source water heater control method according to an embodiment of the present application is schematically shown. The execution subject of the air source water heater control method can be an air source water heater control device with processing capabilities, and the air source water heater control device can be set in devices such as air source water heaters, mobile phones, computers, smart watches, and other household appliances. The air source water heater control device can at least include a memory and a processor.

[0030] In a specific embodiment of the present application, the air source water heater control device, which is the execution subject of the air source water heater control method, is specifically arranged in the air source water heater. The air source water heater control device may include a processor and a memory. A computer program is stored in the memory, and the processor can read the computer program stored in the memory to execute the methods of the embodiments of the present application.

[0031] As Figure 1 shown, the air source water heater control method may include steps S110 to S130.

[0032] Step S110, when the opening degree of the electronic expansion valve is not within the preset opening degree range, it is determined that the air source water heater enters the heat exchange capacity adjustment mode;

[0033] Step S120, control the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor;

[0034] Step S130, when the difference between the exhaust temperature and the hot water temperature in the water tank is within the preset superheat range, control the blower to maintain the current speed and exit the heat exchange capacity adjustment mode.

[0035] During the free operation of the air source water heater, the opening degree of the electronic expansion valve will be adjusted automatically according to the target superheat. Under the same working conditions, when the opening degree of the electronic expansion valve is fixed, if the air volume is low (i.e., the heat exchange capacity is low), the exhaust temperature of the compressor will also be low. When the actual air volume (i.e., when the heat exchange capacity is insufficient) is insufficient, in order to reach the target exhaust temperature of the compressor, the air source water heater usually reduces the opening degree of the electronic expansion valve. However, if the opening degree of the electronic expansion valve is reduced excessively, the capacity of the unit will be low, and under frosting conditions, frosting will occur relatively quickly, which has a negative impact on the operating performance of the unit.

[0036] In the embodiments of the present application, a preset opening degree range [P0, P1] is preset in advance. When it is monitored that the opening degree P of the electronic expansion valve is not within [P0, P1], it is confirmed that the air source water heater enters the heat exchange capacity adjustment mode. The heat exchange capacity adjustment mode is used to adjust the blower speed of the air source water heater to compensate for the heat exchange capacity. In the heat exchange capacity adjustment mode, the blower in the air source water heater can be controlled to increase or decrease the blower speed to adjust the exhaust temperature of the compressor, so as to achieve heat exchange capacity compensation.

[0037] Further, a preset superheat range [△T 排气过热度0 , △T 排气过热度1 is preset in advance. When it is monitored that "the difference between the exhaust temperature T p and the hot water temperature T 热水温度 in the water tank" is within the preset superheat range, that is, △T 排气过热度0 < T p - T热水温度 <△T 排气过热度1 When, the control fan maintains the current rotation speed (i.e., the rotation speed of the fan when △T 排气过热度0 <T p -T 热水温度 <△T 排气过热度1 ), exits the heat exchange amount adjustment mode, thereby ending the adjustment of the fan speed compensation heat exchange amount of the air source water heater.

[0038] Since when the static pressure changes in the air source water heater, it will affect the heat absorbed by the air source water heater, thereby affecting the exhaust temperature of the compressor in the air source water heater. In order to maintain system parameters (such as the exhaust superheat degree, etc.), the opening of the electronic expansion valve will be adjusted. Therefore, in the manner of the embodiment of the present application, first, it is judged to enter the heat exchange amount adjustment mode when the opening of the electronic expansion valve is not within the preset opening range, and then when it is judged that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank (i.e., the exhaust superheat degree) satisfies the preset superheat range, the heat exchange amount adjustment mode is exited, and the judgment accuracy will be higher, thereby improving the accuracy of compensating the heat exchange amount by adjusting the fan speed in the air source water heater and enhancing the user experience.

[0039] The following describes Figure 1 Specific embodiments that are further optional under each step when controlling the air source water heater in the embodiment.

[0040] In one embodiment, referring to Figure 2 , controlling the fan to increase or decrease the fan speed to adjust the exhaust temperature of the compressor may include:

[0041] Step S210, if the difference between the exhaust temperature and the hot water temperature is less than the lower limit value of the preset superheat range, then adjust the opening of the electronic expansion valve to the preset opening range;

[0042] And, step S220, control the fan to increase the fan speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value.

[0043] In this embodiment, if the difference between the exhaust temperature and the hot water temperature is less than the lower limit value of the preset superheat range (i.e., T p -T 热水温度 <△T 排气过热度0 ), then adjust the opening P of the electronic expansion valve to within the preset opening range [P0, P1]. And, control the fan to increase the fan speed until the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is greater than or equal to the lower limit value. At this time, the difference between the exhaust temperature and the hot water temperature in the water tank is also within the preset superheat range, and the fan will be controlled to maintain the current speed and exit the heat exchange amount adjustment mode.

[0044] In the manner of this embodiment, after the air source water heater enters the heat exchange capacity adjustment mode, when the difference between the exhaust gas temperature and the hot water temperature is less than the lower limit value of the preset superheat interval, by adjusting the opening degree of the electronic expansion valve to the preset opening degree interval and controlling the blower to increase the blower speed, it is possible to effectively adjust the blower speed to compensate for the heat exchange capacity in this embodiment.

[0045] Further, in one embodiment, controlling the blower to increase the blower speed until the difference between the exhaust gas temperature and the hot water temperature is greater than or equal to the lower limit value may include: determining a first target speed according to the exhaust gas temperature and the hot water temperature; increasing the blower speed to the first target speed so that the difference between the exhaust gas temperature of the compressor and the hot water temperature in the water tank is greater than or equal to the lower limit value.

[0046] When controlling the blower to increase the blower speed, determining the first target speed according to the exhaust gas temperature and the hot water temperature, and then increasing the blower speed to the first target speed can quickly and accurately make the difference between the exhaust gas temperature of the compressor and the hot water temperature in the water tank greater than or equal to the lower limit value, that is, it can quickly and accurately achieve heat exchange capacity compensation by controlling the blower speed.

[0047] Among them, in one implementation manner, determining the first target speed according to the exhaust gas temperature and the hot water temperature may include: obtaining a first speed adjustment table; querying the first target speed corresponding to the difference between the exhaust gas temperature and the hot water temperature from the first speed adjustment table.

[0048] The first speed adjustment table is pre-configured, and the first target speeds corresponding to different difference ranges can be stored in the first speed adjustment table. The difference range where the "difference between the exhaust gas temperature and the hot water temperature" is located can be queried in the first speed adjustment table, and the first target speed corresponding to this difference range is the first target speed corresponding to the "difference between the exhaust gas temperature and the hot water temperature". In this implementation manner, the first target speed can be quickly and accurately determined according to the "difference between the exhaust gas temperature and the hot water temperature".

[0049] Optionally, in other implementation manners, determining the first target speed according to the exhaust gas temperature and the hot water temperature may include: calculating the first target speed based on the exhaust gas temperature and the hot water temperature according to a first preset formula.

[0050] Optionally, in other embodiments, controlling the blower to increase the blower speed until the difference between the exhaust gas temperature and the hot water temperature is greater than or equal to the lower limit value may include: controlling the blower to gradually increase the blower speed according to a predetermined number of speed increase steps until the difference between the exhaust gas temperature and the hot water temperature is greater than or equal to the lower limit value.

[0051] In one embodiment, referring to Figure 3 , controlling the blower to increase or decrease the blower speed to adjust the exhaust gas temperature of the compressor may include:

[0052] Step S310, if the difference between the exhaust gas temperature and the hot water temperature is greater than the upper limit value of the preset superheat interval, adjust the opening degree of the electronic expansion valve to the preset opening degree interval;

[0053] And, step S320, control the blower to reduce the blower speed until the difference between the exhaust gas temperature and the hot water temperature is less than or equal to the upper limit value of the interval.

[0054] In this embodiment, if the difference between the exhaust gas temperature and the hot water temperature is greater than the upper limit value of the preset superheat interval (i.e., △T 排气过热度1 <T p -T 热水温度 ), adjust the opening degree P of the electronic expansion valve to within the preset opening degree interval [P0, P1]. And, control the blower to reduce the blower speed until the difference between the exhaust gas temperature of the compressor and the hot water temperature in the water tank is less than or equal to the upper limit value of the interval. At this time, the difference between the exhaust gas temperature and the hot water temperature in the water tank, that is, within the preset superheat interval, will control the blower to maintain the current speed and exit the heat exchange capacity adjustment mode.

[0055] In the way of this embodiment, after the air source water heater enters the heat exchange capacity adjustment mode, when the difference between the exhaust gas temperature and the hot water temperature is greater than the upper limit value of the preset superheat interval, by adjusting the opening degree of the electronic expansion valve to the preset opening degree interval and controlling the blower to reduce the blower speed, it is possible to effectively adjust the blower speed to compensate for the heat exchange capacity in this embodiment.

[0056] Further, in one embodiment, controlling the blower to reduce the blower speed until the difference between the exhaust gas temperature and the hot water temperature is less than or equal to the upper limit value of the interval may include: determining a second target speed according to the exhaust gas temperature and the hot water temperature; reducing the blower speed to the second target speed so that the difference between the exhaust gas temperature of the compressor and the hot water temperature in the water tank is less than or equal to the upper limit value of the interval.

[0057] When controlling the blower to reduce the blower speed, determining the second target speed according to the exhaust gas temperature and the hot water temperature, and then reducing the blower speed to the second target speed can quickly and accurately make the difference between the exhaust gas temperature of the compressor and the hot water temperature in the water tank less than or equal to the upper limit value of the interval, that is, can quickly and accurately achieve heat exchange capacity compensation by controlling the blower speed.

[0058] Wherein, in one implementation manner, determining the second target speed according to the exhaust gas temperature and the hot water temperature may include: obtaining a second speed adjustment table; querying the second target speed corresponding to the difference between the exhaust gas temperature and the hot water temperature from the second speed adjustment table.

[0059] Pre-configure a second rotational speed adjustment table, in which different second target rotational speeds corresponding to different difference ranges can be stored. In this second rotational speed adjustment table, the difference range where the "difference between the exhaust gas temperature and the hot water temperature" is located can be queried, and the second target rotational speed corresponding to this difference range is the second target rotational speed corresponding to the "difference between the exhaust gas temperature and the hot water temperature". In this implementation manner, the second target rotational speed can be quickly and accurately determined according to the "difference between the exhaust gas temperature and the hot water temperature".

[0060] Optionally, in other embodiments, determining the second target rotational speed according to the exhaust gas temperature and the hot water temperature may include: calculating the second target rotational speed based on the exhaust gas temperature and the hot water temperature according to a second preset formula.

[0061] Optionally, in other embodiments, controlling the blower to reduce the blower rotational speed until the difference between the exhaust gas temperature and the hot water temperature is less than or equal to the upper limit value of the interval may include: controlling the blower to gradually reduce the blower rotational speed according to a predetermined number of rotational speed reduction steps until the difference between the exhaust gas temperature and the hot water temperature is less than or equal to the upper limit value of the interval.

[0062] In addition, the embodiments of the present application further provide an air source water heater control device, and the air source water heater control device can be applied to a control device. As Figure 4 shown, Figure 4 The block diagram of the air source water heater control device according to an embodiment of the present application is shown. Specifically: The air source water heater control device 400 may include a processor 401 with one or more processing cores and a memory 402 with one or more computer-readable storage media.

[0063] The processor 401 can load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to instructions, and the processor 401 runs the computer programs stored in the memory 402, so as to implement various functions in the embodiments of the air source water heater control method described above in the present application.

[0064] For example, the processor 401 may execute the following steps:

[0065] When the opening degree of the electronic expansion valve is not within the preset opening degree interval, it is determined that the air source water heater enters the heat exchange amount adjustment mode; the blower is controlled to increase or decrease the blower rotational speed to adjust the exhaust gas temperature of the compressor; when the difference between the exhaust gas temperature and the hot water temperature in the water tank is within the preset superheat interval, the blower is controlled to maintain the current rotational speed and exit the heat exchange amount adjustment mode.

[0066] In some embodiments of the present application, controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor includes: if the difference between the exhaust temperature and the hot water temperature is less than the lower limit value of the preset superheat interval, adjusting the opening degree of the electronic expansion valve to the preset opening degree interval; and controlling the blower to increase the blower speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value of the interval.

[0067] In some embodiments of the present application, controlling the blower to increase the blower speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value of the interval includes: determining a first target speed according to the exhaust temperature and the hot water temperature; increasing the blower speed to the first target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is greater than or equal to the lower limit value of the interval.

[0068] In some embodiments of the present application, determining the first target speed according to the exhaust temperature and the hot water temperature includes: obtaining a first speed adjustment table; querying the first target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the first speed adjustment table.

[0069] In some embodiments of the present application, controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor includes: if the difference between the exhaust temperature and the hot water temperature is greater than the upper limit value of the preset superheat interval, adjusting the opening degree of the electronic expansion valve to the preset opening degree interval; and controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value of the interval.

[0070] In some embodiments of the present application, controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value of the interval includes: determining a second target speed according to the exhaust temperature and the hot water temperature; decreasing the blower speed to the second target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is less than or equal to the upper limit value of the interval.

[0071] In some embodiments of the present application, determining the second target speed according to the exhaust temperature and the hot water temperature includes: obtaining a second speed adjustment table; querying the second target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the second speed adjustment table.

[0072] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a computer program or by controlling relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0073] Therefore, an embodiment of the present application further provides a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps in any one of the methods provided by the embodiments of the present application.

[0074] Among them, the storage medium may be a computer-readable storage medium, and the storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), a magnetic disk or an optical disc, etc.

[0075] Since the computer program stored in the storage medium can execute the steps in any one of the methods provided by the embodiments of the present application, the beneficial effects achievable by the methods provided by the embodiments of the present application can be realized. For details, refer to the previous embodiments and will not be elaborated here.

[0076] In addition, referring to Figure 5 , an embodiment of the present application further provides an air source water heater, and the air source water heater 500 may include an air source water heater control device 400 as shown in Figure 4 and other air source water heater modules 600 (such as a fan, a water tank, etc.).

[0077] According to another embodiment of the present application, a computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the air source water heater control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the air source water heater control device executes the methods provided in the various optional implementation manners described in the embodiments of the present application.

[0078] Those skilled in the art will readily think of other implementation manners of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, and these variations, uses, or adaptations follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in the present application.

[0079] It should be understood that the present application is not limited to the embodiments already described and shown in the drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. An air source water heater control method, characterized in that, Including: When the opening degree of the electronic expansion valve is not within the preset opening degree range, it is determined that the air source water heater enters the heat exchange capacity adjustment mode; Controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor; When the difference between the exhaust temperature and the hot water temperature in the water tank is within the preset superheat range, controlling the blower to maintain the current speed and exiting the heat exchange capacity adjustment mode.

2. The method according to claim 1, wherein The controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor includes: If the difference between the exhaust temperature and the hot water temperature is less than the lower limit value of the preset superheat range, adjusting the opening degree of the electronic expansion valve to the preset opening degree range; And controlling the blower to increase the blower speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value.

3. The method according to claim 2, wherein The controlling the blower to increase the blower speed until the difference between the exhaust temperature and the hot water temperature is greater than or equal to the lower limit value includes: Determining a first target speed according to the exhaust temperature and the hot water temperature; Increasing the blower speed to the first target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is greater than or equal to the lower limit value.

4. The method according to claim 3, wherein The determining the first target speed according to the exhaust temperature and the hot water temperature includes: Obtaining a first speed adjustment table; Querying the first target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the first speed adjustment table.

5. The method according to claim 1, wherein The controlling the blower to increase or decrease the blower speed to adjust the exhaust temperature of the compressor includes: If the difference between the exhaust temperature and the hot water temperature is greater than the upper limit value of the preset superheat range, adjusting the opening degree of the electronic expansion valve to the preset opening degree range; And controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value.

6. The method according to claim 5, characterized in that, The controlling the blower to decrease the blower speed until the difference between the exhaust temperature and the hot water temperature is less than or equal to the upper limit value includes: Determining a second target speed according to the exhaust temperature and the hot water temperature; Decreasing the blower speed to the second target speed so that the difference between the exhaust temperature of the compressor and the hot water temperature in the water tank is less than or equal to the upper limit value.

7. The method according to claim 6, wherein The determining the second target speed according to the exhaust temperature and the hot water temperature includes: Obtaining a second speed adjustment table; Querying the second target speed corresponding to the difference between the exhaust temperature and the hot water temperature from the second speed adjustment table.

8. An air source water heater control device, characterized in that, The air source water heater control device includes a memory and a processor. The memory stores a computer program, and the processor is used to read the computer program stored in the memory to execute the method according to any one of claims 1 to 7.

9. A storage medium, characterized in that, A computer program is stored thereon. When the computer program is executed by the processor of the air source water heater control device, the computer is made to execute the method according to any one of claims 1 to 7.

10. An air source water heater, characterized in that, Including the air source water heater control device according to claim 8.

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