Water heater and operation control method thereof

Abstract

The invention belongs to the technical field of heat pump water heaters, and particularly relates to a water heater and an operation control method thereof. The device comprises a water tank, an evaporator, a fan, a compressor and a reversible valve, the reversing valve is provided with four connectors, two connectors of the reversing valve are communicated with two connectors of the compressor through refrigerant pipelines, and the remaining two connectors of the reversing valve are communicated with the water tank and the evaporator through refrigerant pipelines respectively. The electric heater is used for heating water in the water tank; the temperature detector, the compressor, the fan, the reversing valve and the electric heater are all in communication connection with the controller; the temperature detector is used for detecting the indoor initial temperature when the water heater is started and periodically detecting the indoor instantaneous temperature when the water heater operates. The controller is used for periodically controlling the water heater to be in a normal mode, an adjusting mode or a forced mode according to the difference value between the indoor initial temperature and the indoor instantaneous temperature. While the stability of the water temperature is ensured, the indoor temperature fluctuation is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of heat pump water heaters, and specifically relates to a water heater and an operation control method thereof. Background Art

[0002] Currently, many users place the all-in-one household heat pump water heaters indoors. When users turn on the water heaters in winter, the evaporator is indoors and when working normally, the fan blows cold air, causing indoor temperature fluctuations, resulting in poor user experience and many after-sales complaints. Summary of the invention

[0003] In order to solve the above-mentioned problems in the prior art, in order to reduce indoor temperature fluctuations when turning on and using a heat pump water heater placed indoors, the present application provides a water heater and an operation control method thereof, which can reduce indoor temperature fluctuations while ensuring water temperature stability, thereby improving user experience.

[0004] In a first aspect, an embodiment of the present application provides a water heater, comprising: a water tank for storing water; an evaporator connected to the water tank through a refrigerant pipe; a fan for blowing air to the evaporator to improve the operating efficiency of the evaporator; a compressor; and also comprising: a reversible valve, wherein the reversible valve has four interfaces, two interfaces of the reversible valve are connected to two interfaces of the compressor through a refrigerant pipe, and the remaining two interfaces of the reversible valve are respectively connected to the water tank and the evaporator through the refrigerant pipe; a controller, wherein the compressor, the fan, the reversible valve and the electric heater are all communicatively connected to the controller ; A temperature detector is communicatively connected with the controller, and the temperature detector is used to detect the indoor initial temperature when the water heater is turned on, and periodically detect the indoor instantaneous temperature when the water heater is running; the controller is also used to control the water heater to be in an adjustment mode when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a first preset temperature difference, and in the adjustment mode, reduce the operating frequency of the water heater's compressor and reduce the fan speed of the water heater; when the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference, control the water heater to be in a normal mode.

[0005] By adopting the above technical solution, when the water heater is in normal mode, if the difference between the indoor initial temperature and the indoor instantaneous temperature is large, the controller switches the water heater to the adjustment mode. During this stage, the operating frequency of the water heater's compressor is reduced, and the fan speed of the water heater is reduced, so that the difference between the indoor initial temperature and the indoor instantaneous temperature is continuously reduced until it is reduced to zero. Subsequently, the controller switches the water heater to the normal mode, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0006] In the preferred technical scheme of the above-mentioned water heater, it also includes an electric heater for auxiliary heating of the water in the water tank, and the electric heater is a fluid explosion-proof electric heater; after the periodic control reduces the operating frequency of the compressor of the water heater and reduces the speed of the fan of the water heater, it also includes: when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the second preset temperature difference, the water heater is controlled to be in a forced mode, and in the forced mode, the reversible valve of the water heater is forced to reverse, the compressor operates at the rated operating frequency, the fan operates at the maximum speed, and the electric heater of the water heater heats the water in the water tank of the water heater, wherein the second preset temperature difference is greater than the first preset temperature difference.

[0007] By adopting the above technical solution, when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the second preset temperature difference, the indoor temperature fluctuation is more obvious at this time, the controller controls the water heater to switch to the forced mode, the reversible valve of the water heater is forced to reverse, the compressor operates at the rated operating frequency, the fan operates at the maximum speed, and the electric heater of the water heater heats the water in the water tank to avoid causing the water temperature fluctuation in the water tank during the indoor heating process. When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than or equal to the third preset temperature difference, the controller controls the water heater to switch from the forced mode back to the normal mode, which can quickly increase the indoor temperature and improve the user experience. The fluid explosion-proof electric heater consumes electrical energy and converts it into heat energy to heat the material to be heated. During work, the low-temperature fluid medium enters its input port through the pipeline under pressure, along the specific heat exchange flow channel inside the electric heating container, and takes away the high-temperature heat energy generated by the electric heating element during work, so that the temperature of the heated medium is increased, and the high-temperature medium required by the process is obtained at the outlet of the electric heater. The internal control system of the electric heater automatically adjusts the output power of the electric heater according to the temperature sensor signal at the output port to make the medium temperature at the output port uniform; when the heating element is over-temperature, the independent overheating protection device of the heating element immediately cuts off the heating power supply to avoid coking, deterioration and carbonization caused by over-temperature of the heated material, which may cause the heating element to burn out in severe cases, effectively extending the service life of the electric heater.

[0008] In the preferred technical solution of the above water heater, the reversible valve is a two-position four-way electromagnetic reversing valve.

[0009] By adopting the above technical solution, the two-position four-way electromagnetic reversing valve is a zero-start direct-acting electromagnetic slide valve. In the working system, the electromagnet receives the electrical signal, pushes the valve core to change direction, and changes the flow direction of the medium. After the electrical signal disappears, the valve core automatically resets by the spring to achieve the purpose of automatic control, and it is equipped with a manual device. It has the advantages of simple structure, reliable action, convenient maintenance, good sealing performance, pollution resistance, vibration resistance, and long service life.

[0010] In the preferred technical solution of the above water heater, it also includes a throttle valve, and the throttle valve is arranged on the refrigerant pipeline connecting the water tank and the evaporator.

[0011] By adopting the above technical solution, the flow rate of the refrigerant in the refrigerant pipeline can be adjusted by using a throttle valve to adjust the heating efficiency of the water heater.

[0012] In a second aspect, an embodiment of the present application provides a water heater operation control method, comprising the following steps: operating the water heater in a normal mode, detecting the indoor initial temperature when the water heater is turned on, and periodically detecting the indoor instantaneous temperature when the water heater is running; when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a first preset temperature difference, controlling the water heater to be in an adjustment mode, and in the adjustment mode, reducing the operating frequency of the water heater's compressor and reducing the fan speed of the water heater; when the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference, controlling the water heater to be in a normal mode.

[0013] By adopting the above technical solution, when the water heater is in normal mode, if the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the first preset temperature difference, the controller switches the water heater to the adjustment mode. In this stage, the operating frequency of the water heater compressor is reduced, and the fan speed of the water heater is reduced to continuously reduce the difference between the indoor initial temperature and the indoor instantaneous temperature. When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference, the controller switches the water heater back to the normal mode, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0014] In the preferred technical solution of the above-mentioned water heater operation control method, reducing the operating frequency of the water heater compressor and reducing the fan speed of the water heater include: reducing the operating frequency of the water heater compressor by 4Hz-6Hz and reducing the fan speed of the water heater by 40 rpm-60 rpm.

[0015] By adopting the above technical solution and after a large number of experimental verifications, the operating frequency of the water heater's compressor is reduced by 4Hz-6Hz, and the fan speed of the water heater is reduced by 40 rpm-60 rpm. The difference between the indoor initial temperature and the indoor instantaneous temperature can be quickly made less than the first preset temperature difference, effectively reducing the fluctuation of the indoor temperature and improving the user experience.

[0016] In the preferred technical solution of the above-mentioned water heater operation control method, after the control reduces the operating frequency of the compressor of the water heater and reduces the speed of the fan of the water heater, it also includes: when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the second preset temperature difference, controlling the water heater to be in a forced mode, in which the reversible valve of the water heater is forced to reverse, the compressor operates at the rated operating frequency, the fan operates at the maximum speed, and the electric heater of the water heater heats the water in the water tank of the water heater, wherein the second preset temperature difference is greater than the first preset temperature difference; when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than the third preset temperature difference, controlling the water heater to maintain the forced mode, wherein the first preset temperature difference is greater than the third preset temperature difference and less than the second preset temperature difference; when the difference between the indoor initial temperature and the indoor instantaneous temperature is less than or equal to the third preset temperature difference, the water heater is switched from the forced mode to the normal mode.

[0017] By adopting the above technical solution, when the difference between the initial indoor temperature and the instantaneous indoor temperature is greater than or equal to the second preset temperature difference, the fluctuation of the indoor temperature is more obvious. The controller controls the water heater to switch to the forced mode, the reversible valve of the water heater is forced to reverse, the compressor operates at the rated operating frequency, the fan operates at the maximum speed, and the electric heater of the water heater heats the water in the water tank to avoid fluctuations in the water temperature in the water tank during the indoor heating process. When the difference between the initial indoor temperature and the instantaneous indoor temperature is less than or equal to the third preset temperature difference, the controller controls the water heater to switch from the forced mode back to the normal mode, which can quickly increase the indoor temperature and improve the user experience.

[0018] In a third aspect, an embodiment of the present application provides a water heater, comprising: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory to implement the water heater operation control method.

[0019] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by the processor, they are used to implement the water heater operation control method.

[0020] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, and when the computer program is executed by the processor, the water heater operation control method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic cross-sectional structural diagram of a water heater tank provided in an embodiment of the present application;

[0023] Figure 2 is a refrigerant circulation system diagram of a water heater provided in an embodiment of the present application;

[0024] Figure 3 It is a flow chart related to the adjustment mode in the water heater operation control method provided in the embodiment of the present application;

[0025] Figure 4 It is a flow chart related to the forced mode in the water heater operation control method provided in the embodiment of the present application.

[0026] Reference numerals:

[0027] 100-water tank;

[0028] 200-evaporator;

[0029] 300- fan;

[0030] 400-compressor;

[0031] 500- reversible valve;

[0032] 600-Electric heater;

[0033] 700 - Throttle valve.

[0034] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0037] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0038] As mentioned in the background technology, many users currently place the all-in-one units in household heat pump water heaters indoors. When users turn on the units in winter, since the evaporator is indoors and operates normally, the fan blows cold air, causing indoor temperature fluctuations, resulting in poor user experience and many after-sales complaints.

[0039] Therefore, in order to improve or solve the above-mentioned technical problems, the embodiment of the present application provides a water heater and an operation control method thereof. In the technical solution provided by the embodiment of the present application, a temperature detector is used to detect the indoor initial temperature when the water heater is turned on, and the indoor instantaneous temperature when the water heater is running is periodically detected. The temperature detector transmits the temperature signal to the controller. The controller periodically controls the water heater to be in normal mode, adjustment mode or forced mode according to the difference between the indoor initial temperature and the indoor instantaneous temperature, so that the difference between the indoor initial temperature and the indoor instantaneous temperature is continuously reduced until it is reduced to zero, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0040] Reference below Figure 1-Figure 4 The water heater and the operation control method thereof provided in the embodiments of the present application are described in detail.

[0041] Figure 1 It is a schematic cross-sectional structural diagram of a water heater tank provided in an embodiment of the present application; Figure 2 is a refrigerant circulation system diagram of a water heater provided in an embodiment of the present application; Figure 3 It is a flow chart related to the adjustment mode in the water heater operation control method provided in the embodiment of the present application; Figure 4 It is a flow chart related to the forced mode in the water heater operation control method provided in the embodiment of the present application.

[0042] First, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present application provides a water heater, comprising: a water tank 100 for storing water; an evaporator 200, which is connected to the water tank 100 through a refrigerant pipeline; a fan 300, which is used to blow air to the evaporator 200 to improve the operating efficiency of the evaporator 200; a compressor 400; and further comprising: a reversible valve 500, the reversible valve 500 having four interfaces, two interfaces of the reversible valve 500 being connected to two interfaces of the compressor 400 through a refrigerant pipeline, and the remaining two interfaces of the reversible valve 500 being connected to the water tank 100 and the compressor 400 through a refrigerant pipeline. The evaporator 200 is connected; the electric heater 600 is used to assist in heating the water in the water tank 100; the controller, the compressor 400, the fan 300, the reversible valve 500 and the electric heater 600 are all connected to the controller in communication; the temperature detector is connected to the controller in communication, and the temperature detector is used to detect the indoor initial temperature when the water heater is turned on, and periodically detect the indoor instantaneous temperature when the water heater is running; the controller is also used to periodically control the water heater to be in normal mode, adjustment mode or forced mode according to the difference between the indoor initial temperature and the indoor instantaneous temperature.

[0043] Specifically, when the water heater is in normal mode, if the difference between the indoor initial temperature and the indoor instantaneous temperature is large, the controller switches the water heater to the adjustment mode. During this stage, the operating frequency of the water heater's compressor 400 is reduced, and the speed of the water heater's fan 300 is reduced to reduce the difference between the indoor initial temperature and the indoor instantaneous temperature until it is reduced to zero. Subsequently, the controller switches the water heater to normal mode, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0044] If the difference between the indoor initial temperature and the indoor instantaneous temperature is larger, the controller switches the water heater to the forced mode. In this stage, the reversible valve 500 of the water heater is forced to reverse, the compressor 400 operates at the rated operating frequency, the fan 300 operates at the maximum speed, and the electric heater 600 of the water heater heats the water in the water tank 100, so that the difference between the indoor initial temperature and the indoor instantaneous temperature is continuously reduced until it is reduced to zero. Subsequently, the controller switches the water heater to the normal mode, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0045] Please refer to Figure 1In some embodiments provided in the present application, the electric heater 600 is exemplarily a fluid explosion-proof electric heater 600. Specifically, the fluid explosion-proof electric heater 600 consumes electrical energy and converts it into thermal energy to heat the material to be heated. During operation, the low-temperature fluid medium enters its input port through a pipeline under pressure, and along a specific heat exchange flow channel inside the electric heating container, the path designed using the principles of fluid thermodynamics is used to take away the high-temperature heat energy generated by the operation of the electric heating element, so that the temperature of the heated medium is increased, and the high-temperature medium required by the process is obtained at the outlet of the electric heater 600. The internal control system of the electric heater 600 automatically adjusts the output power of the electric heater 600 according to the temperature sensor signal of the output port, so that the medium temperature at the output port is uniform; when the heating element is over-temperature, the independent overheating protection device of the heating element immediately cuts off the heating power supply to avoid coking, deterioration, and carbonization caused by over-temperature of the heated material, which may cause the heating element to burn out in severe cases, effectively extending the service life of the electric heater 600.

[0046] Please refer to Figure 1 In some embodiments provided in the present application, the reversible valve 500 is exemplarily a two-position four-way electromagnetic reversing valve. Specifically, the two-position four-way electromagnetic reversing valve is a zero-start direct-acting electromagnetic slide valve. In the working system, the electromagnet receives an electrical signal to push the valve core to change direction and change the flow direction of the medium. After the electrical signal disappears, the valve core automatically resets by a spring to achieve the purpose of automatic control, and is equipped with a manual device. It has the advantages of simple structure, reliable action, convenient maintenance, good sealing performance, pollution resistance, vibration resistance, and long service life.

[0047] Please refer to Figure 1 and Figure 2 In some embodiments provided in the present application, the water heater further comprises a throttle valve 700, which is fixedly connected to the refrigerant pipe connecting the water tank 100 and the evaporator 200. Specifically, the flow rate of the refrigerant in the refrigerant pipe can be adjusted by using the throttle valve 700 to adjust the heating efficiency of the water heater.

[0048] Second, please refer to Figure 1 , Figure 2 and Figure 3 The embodiment of the present application provides a water heater operation control method, comprising the following steps: operating the water heater in a normal mode, detecting the indoor initial temperature when the water heater is turned on, and periodically detecting the indoor instantaneous temperature when the water heater is running; when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a first preset temperature difference, controlling the water heater to be in an adjustment mode, and when the water heater is in the adjustment mode, reducing the operating frequency of the water heater compressor 400 by 4Hz-6Hz, and reducing the speed of the water heater fan 300 by 40 rpm-60 rpm, so that the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference. In this embodiment, the first preset temperature difference is set to 3°C.

[0049] Specifically, when the water heater is in normal mode, if the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the first preset temperature difference, the controller switches the water heater to the adjustment mode. In this stage, the operating frequency of the water heater's compressor 400 is reduced, and the speed of the water heater's fan 300 is reduced to continuously reduce the difference between the indoor initial temperature and the indoor instantaneous temperature. When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference, the controller switches the water heater back to normal mode, which can reduce the fluctuation of the indoor temperature and improve the user experience.

[0050] Please refer to Figure 1 , Figure 2 and Figure 4 In some embodiments provided in the present application, exemplarily, after controlling to reduce the operating frequency of the compressor 400 of the water heater and reducing the speed of the fan 300 of the water heater, it also includes: when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the second preset temperature difference, controlling the water heater to be in a forced mode, in which the reversible valve 500 of the water heater is forced to reverse, the compressor 400 operates at the rated operating frequency, the fan 300 operates at the maximum speed, and the electric heater 600 of the water heater heats the water in the water tank 100 of the water heater, wherein the second preset temperature difference is greater than the first preset temperature difference. In this embodiment, the second preset temperature difference is set to 5°C.

[0051] When the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than the third preset temperature difference, the water heater is controlled to maintain the forced mode, wherein the first preset temperature difference is greater than the third preset temperature difference and less than the second preset temperature difference. In this embodiment, the third preset temperature difference is set to 0°C; when the difference between the indoor initial temperature and the indoor instantaneous temperature is less than or equal to the third preset temperature difference, the water heater switches from the forced mode to the normal mode.

[0052] Specifically, when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to the second preset temperature difference, the indoor temperature fluctuation is more obvious. The controller controls the water heater to switch to the forced mode, the reversible valve 500 of the water heater is forced to reverse, the compressor 400 operates at the rated operating frequency, the fan 300 operates at the maximum speed, and the electric heater 600 of the water heater heats the water in the water tank 100 to avoid fluctuations in the water temperature in the water tank 100 during the indoor heating process. When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than or equal to the third preset temperature difference, the controller controls the water heater to switch from the forced mode back to the normal mode, which can quickly increase the indoor temperature and improve the user experience.

[0053] In a third aspect, an embodiment of the present application provides a water heater, comprising: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory to implement a water heater operation control method.

[0054] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement a water heater operation control method.

[0055] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements a water heater operation control method.

[0056] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0057] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0058] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0059] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0060] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water heater, characterized in that: include: Water tank, used to store water; an evaporator, connected to the water tank through a refrigerant pipeline; A fan, used for blowing air to the evaporator to improve the operating efficiency of the evaporator; compressor; Also includes: A reversible valve, wherein the reversible valve has four interfaces, two interfaces of the reversible valve are connected to two interfaces of the compressor through a refrigerant pipeline, and the remaining two interfaces of the reversible valve are respectively connected to the water tank and the evaporator through a refrigerant pipeline; A controller, wherein the compressor, the fan, the reversible valve and the electric heater are all communicatively connected to the controller; A temperature detector is connected to the controller for detecting the initial indoor temperature when the water heater is turned on and periodically detecting the instantaneous indoor temperature when the water heater is running; The controller is also used to control the water heater to be in an adjustment mode when the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a first preset temperature difference. In the adjustment mode, the operating frequency of the water heater's compressor is reduced and the fan speed of the water heater is reduced; when the difference between the indoor initial temperature and the indoor instantaneous temperature is less than the first preset temperature difference, the water heater is controlled to be in a normal mode.

2. The water heater according to claim 1, characterized in that: It also includes an electric heater for auxiliary heating of water in the water tank, wherein the electric heater is a fluid explosion-proof electric heater; After the periodic control reduces the operating frequency of the compressor of the water heater and reduces the speed of the fan of the water heater, the method further includes: When the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a second preset temperature difference, the water heater is controlled to be in a forced mode. In the forced mode, the reversible valve of the water heater is forced to reverse, the compressor operates at the rated operating frequency, the fan operates at the maximum speed, and the electric heater of the water heater heats the water in the water tank of the water heater, wherein the second preset temperature difference is greater than the first preset temperature difference.

3. The water heater according to claim 1, characterized in that: The reversible valve is a two-position four-way electromagnetic reversing valve.

4. The water heater according to claim 1, characterized in that: It also includes a throttle valve, which is arranged on the refrigerant pipeline connecting the water tank and the evaporator.

5. A water heater operation control method according to any one of claims 1 to 4, characterized in that: The following steps are involved: operating the water heater in a normal mode, detecting an initial indoor temperature when the water heater is turned on, and periodically detecting an instantaneous indoor temperature when the water heater is running; When the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a first preset temperature difference, the water heater is controlled to be in an adjustment mode, and in the adjustment mode, the operating frequency of the compressor of the water heater is reduced, and the fan speed of the water heater is reduced; When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than a first preset temperature difference, the water heater is controlled to be in a normal mode.

6. The water heater operation control method according to claim 5, characterized in that: The step of reducing the operating frequency of the compressor of the water heater and reducing the fan speed of the water heater comprises: The operating frequency of the compressor of the water heater is reduced by 4 Hz-6 Hz, and the speed of the fan of the water heater is reduced by 40 rpm-60 rpm.

7. The water heater operation control method according to claim 6, characterized in that: After the control reduces the operating frequency of the compressor of the water heater and reduces the speed of the fan of the water heater, the control further includes: When the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than or equal to a second preset temperature difference, the water heater is controlled to be in a forced mode, in which the reversible valve of the water heater is forced to reverse, the compressor operates at a rated operating frequency, the fan operates at a maximum speed, and the electric heater of the water heater heats the water in the water tank of the water heater, wherein the second preset temperature difference is greater than the first preset temperature difference; When the difference between the indoor initial temperature and the indoor instantaneous temperature is greater than a third preset temperature difference, controlling the water heater to maintain the forced mode, wherein the first preset temperature difference is greater than the third preset temperature difference and less than the second preset temperature difference; When the difference between the indoor initial temperature and the indoor instantaneous temperature is less than or equal to the third preset temperature difference, the water heater is switched from the forced mode to the normal mode.

8. A water heater, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory to implement the water heater operation control method as described in any one of claims 5 to 7.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the water heater operation control method described in any one of claims 5 to 7.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the water heater operation control method as claimed in any one of claims 5 to 7 is implemented.

Images