Control method of heat pump water heater, heat pump water heater and readable storage medium

Abstract

The application discloses a control method of a heat pump water heater, the heat pump water heater and a readable storage medium. The heat pump water heater comprises a shell, a heat exchange circulating system and a water tank arranged in the shell, the shell is provided with a first air inlet and a second air inlet, a heat exchange air duct is formed between the first air inlet and the second air inlet, and a fan is arranged in the heat exchange air duct; the heat exchange circulating system comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is located in the water tank, and the second heat exchanger is located in the heat exchange air duct; the first air inlet is communicated with an indoor room of the heat pump water heater, and the second air inlet is communicated with an outdoor room through an air pipe; the method comprises the following steps: when a trigger signal is received, it is determined whether the trigger signal is a preset trigger signal; if yes, and a compressor of the heat pump water heater is in a non-running state, then the fan is controlled to rotate. The method of the application can realize that the heat pump water heater does not generate heat, the fan in the heat pump water heater is controlled to rotate to draw indoor air to the outdoor room to realize ventilation, and the use function of the heat pump water heater is increased.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and in particular to a control method for a heat pump water heater, a heat pump water heater, and a readable storage medium. Background Technology

[0002] In systems formed by heat pump water heaters, such as air source heat pump water heaters, the fan in the heat pump water heater is controlled to rotate when heating is required, and the fan is turned off or put into standby mode when heating is not needed. Currently, the fan in heat pump water heaters is only turned on, operated, and turned off according to the heating capacity of the heat pump water heater, which is a single function.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is related technology. Summary of the Invention

[0004] The main objective of this invention is to provide a control method for a heat pump water heater, a heat pump water heater, and a readable storage medium, aiming to solve the problem that the fan in a heat pump water heater only needs to be turned on, run, and turned off according to the heating capacity of the heat pump water heater, resulting in a single function.

[0005] To achieve the above objectives, the present invention provides a control method for a heat pump water heater. The heat pump water heater includes: a shell, a heat exchange circulation system and a water tank disposed within the shell, the shell having a first air outlet and a second air outlet, a heat exchange duct forming between the first air outlet and the second air outlet, and a fan disposed within the heat exchange duct; the heat exchange circulation system includes a first heat exchanger and a second heat exchanger, the first heat exchanger being located within the water tank, and the second heat exchanger being located within the heat exchange duct; the first air outlet is connected to the indoor unit where the heat pump water heater is located, and the second air outlet is connected to the outdoor unit via a duct; the control method for the heat pump water heater includes:

[0006] Upon receiving a trigger signal, determine whether the trigger signal is a preset trigger signal;

[0007] If so, and the compressor of the heat pump water heater is not running, then the fan is controlled to rotate.

[0008] Optionally, the triggering conditions of the preset trigger signal include at least one of the following:

[0009] The indoor air parameters where the heat pump water heater is located are greater than or equal to the preset pollution parameters.

[0010] Receives a command to activate the ventilation mode from the target home appliance in the room where the heat pump water heater is located;

[0011] The current time point has reached the preset time point.

[0012] Optionally, before the step of controlling the rotation of the fan, the method further includes:

[0013] The trigger signal activates the exhaust mode of the heat pump water heater when a preset exhaust control is triggered.

[0014] Obtain the indoor air parameters where the heat pump water heater is located and / or the operating status of the target home appliances in the room;

[0015] When the indoor air parameters are greater than or equal to the preset pollution parameters, the step of controlling the fan rotation is executed, and / or, when the operating state is the powered-on working state, the step of controlling the fan rotation is executed.

[0016] Optionally, the step of controlling the rotation of the fan includes:

[0017] Obtain the indoor air parameters where the heat pump water heater is located and / or the operating status of the target home appliances in the room;

[0018] Based on the indoor air parameters and / or the operating status, determine the fan speed of the fan in the heat pump water heater, and control the fan to rotate at the specified fan speed.

[0019] Optionally, before the step of obtaining the indoor air parameters where the heat pump water heater is located and / or the operating status of the target household appliances in the room, the method further includes:

[0020] Obtain the ambient temperature of the space where the heat pump water heater is located;

[0021] The initial fan speed is determined based on the ambient temperature, wherein the lower the ambient temperature, the lower the initial fan speed.

[0022] The fan is controlled to operate at the initial fan speed.

[0023] Optionally, after determining whether the trigger signal is a preset trigger signal upon receiving the trigger signal, the method further includes:

[0024] If so, and the compressor of the heat pump water heater is running, the fan is kept rotating at the current speed;

[0025] When the compressor is detected to have stopped running, the fan is controlled to rotate at the fan speed corresponding to the ventilation mode.

[0026] Optionally, after the step of controlling the rotation of the fan, the method further includes:

[0027] Upon receiving a fan speed adjustment command from the heat pump water heater, the fan in the heat pump water heater is controlled to rotate at the fan speed corresponding to the fan speed adjustment command.

[0028] Furthermore, to achieve the above objectives, the present invention also provides a heat pump water heater, comprising: a shell, a heat exchange circulation system and a water tank disposed within the shell, the shell having a first air vent and a second air vent, a heat exchange duct forming between the first air vent and the second air vent, and a fan disposed within the heat exchange duct; the heat exchange circulation system comprising a first heat exchanger and a second heat exchanger, the first heat exchanger being located within the water tank and the second heat exchanger being located within the heat exchange duct; the first air vent communicating with the indoor space where the heat pump water heater is located, and the second air vent communicating with the outdoor space via a duct; the heat pump water heater comprising: a memory, a processor, and a control program for the heat pump water heater stored in the memory and executable on the processor, wherein when the control program for the heat pump water heater is executed by the processor, it implements the various steps of the control method for the heat pump water heater described above.

[0029] Optionally, the duct is provided with a third air outlet, which is connected to the indoor environment. A baffle is provided at the third air outlet, which is configured to close the third air outlet when it is in a first position; and to open the third air outlet when it is in a second position, thereby closing the duct connecting the second air outlet to the outside.

[0030] In addition, to achieve the above objectives, the present invention also provides a readable storage medium storing a control program for a heat pump water heater, wherein the control program for the heat pump water heater, when executed by the processor, implements the various steps of the control method for the heat pump water heater as described above.

[0031] The present invention proposes a control method for a heat pump water heater, a heat pump water heater, and a readable storage medium. When the compressor of the heat pump water heater is not running, it indicates that the heat pump water heater is currently in a shutdown or standby mode, and the heat pump water heater is not heating. The fan is not rotating, but the fan in the heat pump water heater can still draw indoor air to the outside, increasing the functionality of the heat pump water heater. Upon receiving a trigger signal, if the trigger signal is determined to be a preset trigger signal, it indicates that the conditions for the heat pump water heater to draw air and exchange are met. The fan is then controlled to rotate, drawing indoor air from the space where the heat pump water heater is located into the heat exchange duct through the first air vent, and expelling the indoor air to the outside through the second air vent. This achieves the effect of ventilation by controlling the rotation of the fan in the heat pump water heater to draw indoor air to the outside even when the heat pump water heater is not heating. It uses the heat pump water heater as an "exhaust fan," increasing its functionality, improving its cost-effectiveness, and enhancing user comfort. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the hardware operating environment involved in various embodiments of the control method for the heat pump water heater of the present invention;

[0033] Figure 2 This is a schematic diagram of the installation of a heat pump water heater.

[0034] Figure 3 This is a diagram illustrating the heat exchange principle of a heat pump water heater.

[0035] Figure 4 This is a flowchart illustrating the first embodiment of the control method for a heat pump water heater according to the present invention.

[0036] Explanation of icon numbers:

[0037] label name label name 1 compressor 2 First heat exchanger 3 Throttling device 4 Second heat exchanger 5 Four-way valve 6 water tank 7 Fan 100 case 101 First Opportunity 102 Second Opportunity 103 air duct 104 The third opportunity

[0038] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0040] This invention provides a control method for a heat pump water heater. The heat pump water heater includes: a shell, a heat exchange circulation system and a water tank disposed within the shell, the shell having a first air outlet and a second air outlet, a heat exchange duct forming between the first air outlet and the second air outlet, and a fan disposed within the heat exchange duct; the heat exchange circulation system includes a first heat exchanger and a second heat exchanger, the first heat exchanger being located within the water tank, and the second heat exchanger being located within the heat exchange duct; the first air outlet is connected to the indoor unit where the heat pump water heater is located, and the second air outlet is connected to the outdoor unit via a duct.

[0041] The control method for the heat pump water heater includes:

[0042] Upon receiving a trigger signal, determine whether the trigger signal is a preset trigger signal;

[0043] If so, and the compressor of the heat pump water heater is not running, then the fan is controlled to rotate.

[0044] The control method for a heat pump water heater of the present invention, when the compressor of the heat pump water heater is not running, indicates that the heat pump water heater is currently in a shutdown or standby mode, and the heat pump water heater is not heating. The fan is not rotating, but the fan in the heat pump water heater can still draw air from the room to the outside, increasing the functionality of the heat pump water heater. Upon receiving a trigger signal, if the trigger signal is determined to be a preset trigger signal, it indicates that the conditions for ventilation of the heat pump water heater are met. The fan is then controlled to rotate, drawing indoor air from the space where the heat pump water heater is located into the heat exchange duct through a first air vent, and expelling the indoor air to the outside through a second air vent. This achieves the effect of ventilation even when the heat pump water heater is not heating, by controlling the rotation of the fan in the heat pump water heater to draw indoor air to the outside, effectively using the heat pump water heater as an "exhaust fan," increasing its functionality, improving its cost-effectiveness, and enhancing user comfort.

[0045] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the hardware operating environment involved in various embodiments of the control method for the heat pump water heater of the present invention.

[0046] The subject of the embodiment of the control method for a heat pump water heater of the present invention is a heat pump water heater.

[0047] like Figure 1 As shown, the heat pump water heater may include: a processor 101, a communication bus 102, and a memory 103. Those skilled in the art will understand that... Figure 1 The structural block diagram of the heat pump water heater shown does not constitute a limitation on the heat pump water heater. A heat pump water heater may include more or fewer components than shown, or combine certain components, or have different component arrangements. The processor 101 is the control center of the heat pump water heater, the communication bus 102 is used to realize communication between the various components of the heat pump water heater, and the memory 103 stores the central control system and the control program of the heat pump water heater. The processor 101 executes the control program of the heat pump water heater stored in the memory 103 to implement the steps of the various embodiments of the heat pump water heater control method of the present invention.

[0048] Optionally, the heat pump water heater may also include a display unit 104, which includes a display panel. The display panel may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like, to output and display the user's browsing interface.

[0049] Optionally, the heat pump water heater also includes a communication unit 105. The communication unit 105 establishes data communication with the home appliance via a network protocol (this data communication can be IP communication or Bluetooth channel) to realize data transmission with the home appliance. For example, when the home appliance in the kitchen, such as the range hood, is started and running, it sends a command to the heat pump water heater to turn on the ventilation mode. When the heat pump water heater receives the preset trigger signal triggered by the command to turn on the ventilation mode, and the compressor of the heat pump water heater is not running, it controls the fan to rotate.

[0050] It should be noted that, please refer to Figure 2 as well as Figure 3 , Figure 2 This is a schematic diagram of the installation of a heat pump water heater. Figure 3 This is a schematic diagram of the heat exchange principle of a heat pump water heater. The heat pump water heater includes: a shell 100, a heat exchange circulation system and a water tank 2 disposed within the shell 100. The shell 100 is provided with a first air outlet 101 and a second air outlet 102, forming a heat exchange air duct between the first air outlet 101 and the second air outlet 102. A fan 7 is disposed within the heat exchange air duct. The heat exchange circulation system includes a first heat exchanger 2 and a second heat exchanger 4. The first heat exchanger 2 is located within the water tank 6, and the second heat exchanger 4 is located within the heat exchange air duct. The first air outlet 101 is connected to the indoor unit where the heat pump water heater is located, and the second air outlet 102 is connected to the outdoor unit through an air duct 103.

[0051] Alternatively, please refer to Figure 2 The duct 103 is provided with a third air outlet 104, which is connected to the indoor environment. A baffle is provided at the third air outlet 104. The baffle is configured to close the third air outlet 104 when it is in the first position, and the second air outlet 102 is connected to the outdoor environment through the duct 103. Alternatively, the baffle is configured to open the third air outlet 104 when it is in the second position, and close the duct connecting the second air outlet to the outdoor environment.

[0052] It should be noted that when the baffle is in the first position and the third air vent 104 is closed, the fan 7 is controlled to rotate, which can draw indoor air from the space where the heat pump water heater is located into the heat exchange duct from the first air vent 101. The air flows through the fan 7 in the heat exchange duct and is discharged to the outside from the second air vent 102, so as to achieve the effect of drawing indoor air from the space where the heat pump water heater is located to the outside and achieving ventilation.

[0053] When the baffle is in the second position and the air duct connecting the second air vent 102 to the outside is closed, the fan 7 is controlled to rotate, which can draw indoor air from the space where the heat pump water heater is located into the heat exchange air duct from the first air vent 101. The air flows through the fan 7 in the heat exchange air duct and is introduced into the room from the third air vent 104, so as to realize the indoor air circulation of the space where the heat pump water heater is located.

[0054] Optionally, the baffle can be set in the first position or the second position according to actual needs.

[0055] Optionally, the heat exchange cycle system includes a heating cycle loop formed by a compressor 1, a four-way valve 5, a first heat exchanger 2, a throttling device 3, and a second heat exchanger 4. The first heat exchanger 2 is located inside the water tank 6, and the refrigerant in the second heat exchanger 2 exchanges heat with the water in the water tank 6.

[0056] When using a heat exchange circulation system for heating, please refer to... Figure 3 The black arrow in the middle indicates that the refrigerant is pressurized in the compressor 1 to form a high-temperature and high-pressure gas, which passes through the four-way valve 5 and the first heat exchanger 2 in sequence. The high-temperature and high-pressure gas refrigerant dissipates heat in the first heat exchanger 2, and condenses and liquefies to release heat to heat the water in the water tank 6 in the first heat exchanger 2. After condensation and liquefaction, the refrigerant is depressurized through the throttling device 3 and enters the second heat exchanger 4, where it absorbs heat from the air and evaporates into gas, and then enters the compressor 1 for circulation.

[0057] Optionally, when heating is performed through the heat exchange circulation system, the fan 7 is controlled to rotate according to the heating demand of the heat pump water heater. When the baffle is in the first position and the third air outlet 104 is closed, when the fan 7 rotates, the indoor air in the space where the heat pump water heater is located can be drawn into the heat exchange duct from the first air outlet 101, and the indoor air is discharged to the outside from the second air outlet 102. When the heat exchange circulation system is heating, the refrigerant absorbs heat from the air at the second heat exchanger 4 and evaporates into gas. When the fan 7 rotates, the cold air at the second heat exchanger 4 and the indoor air are drawn into the heat exchange duct from the first air outlet 101, and the cold air and the indoor air are discharged to the outside from the second air outlet 102. Thus, while the heat pump water heater is heating, it is also used to draw the indoor air in the space where the heat pump water heater is located to the outside, achieving the effect of ventilation.

[0058] Optionally, when heating is performed through the heat exchange circulation system, the fan 7 is controlled to rotate according to the heating demand of the heat pump water heater. When the baffle is in the second position and the air duct connecting the second air outlet 102 to the outside is closed, when the fan 7 rotates, indoor air in the space where the heat pump water heater is located can be drawn into the heat exchange air duct from the first air outlet 101, and indoor air can be introduced into the room from the third air outlet 104. When the heat exchange circulation system is heating, the refrigerant absorbs heat from the air at the second heat exchanger 4 and evaporates into gas. When the fan 7 rotates, the cold air at the second heat exchanger 4 and indoor air are drawn into the heat exchange air duct from the first air outlet 101 and introduced into the room from the third air outlet 104 to reduce the indoor ambient temperature. Thus, while the heat pump water heater is heating, it also circulates the indoor air in the space where the heat pump water heater is located to reduce the indoor ambient temperature.

[0059] Understandably, when defrosting via a heat exchange circulation system, please refer to... Figure 3 The white arrow indicates that the refrigerant is pressurized in compressor 1 to form a high-temperature, high-pressure gas. This gas then passes through a four-way valve 5 and the second heat exchanger 4. In the second heat exchanger 4, the high-temperature, high-pressure refrigerant dissipates heat and condenses, releasing heat for defrosting. The condensed refrigerant then passes through a throttling device 3 to reduce pressure and enters the first heat exchanger 2. There, it absorbs heat from the water, evaporates, and becomes gas again before re-entering compressor 1 for circulation. The water in the water tank can be heated electrically.

[0060] Based on the above structural block diagram of the heat pump water heater, various embodiments of the control method of the heat pump water heater of the present invention are proposed.

[0061] In the first embodiment, the present invention provides a control method for a heat pump water heater, please refer to... Figure 4 , Figure 4 This is a flowchart illustrating a first embodiment of the control method for a heat pump water heater according to the present invention. In this embodiment, the control method for the heat pump water heater includes the following steps:

[0062] Step S10: When a trigger signal is received, determine whether the trigger signal is a preset trigger signal;

[0063] The trigger signal is a signal used to trigger changes in the operating state of the heat pump water heater or the state of a target component in the heat pump water heater.

[0064] Optionally, the target component includes, but is not limited to, at least one of a compressor, a fan, a four-way valve, and a throttling device.

[0065] Optionally, the operating state includes at least one of the following: shutdown or off state, standby state, and working state. For example, when the operating state of the heat pump water heater is changed, such as upon receiving a trigger signal triggered by a shutdown command, the operating state of the heat pump water heater is controlled to switch from the working state to the shutdown or off state.

[0066] Optionally, when the target component is a compressor or a fan, the state of the target component includes at least one of a shutdown or off state, a standby state, and an operating state; when the target component is a four-way valve or a throttling device, the state of the target component includes a closed state or an open state.

[0067] Optionally, the triggering methods for the trigger signal include, but are not limited to, triggering based on data collected by various types of detection devices such as sensors, and linkage triggering based on feedback information from home appliances. Among these, the data collected by various types of detection devices includes, for example, temperature, CO2 concentration, and formaldehyde concentration.

[0068] It is understandable that the triggering conditions for the preset trigger signal can be either manual or automatic.

[0069] Optionally, when the triggering condition of the preset trigger signal is manual triggering, the triggering condition of the preset trigger signal can be triggered by receiving a preset ventilation control operation, such as pressing the MODE button, or receiving a preset ventilation control operation and the preset ventilation control operation lasts for a preset duration to avoid accidental triggering, such as pressing the MODE button for 3 seconds, or receiving a preset combination operation to avoid accidental triggering while increasing the selectivity of the triggering condition of the preset trigger signal, such as pressing (MODE button + ENTER button) at the same time, or pressing (MODE button + ENTER button) at the same time for a preset duration of 3 seconds.

[0070] Optionally, when the preset trigger signal is triggered manually, the fan can be controlled to rotate as needed according to the user's actual needs when the compressor of the heat pump water heater is not running, so as to draw the air in the space where the heat pump water heater is located to the outside and achieve the purpose of ventilation.

[0071] As an optional implementation, when the triggering condition of the preset trigger signal is automatic triggering, the triggering condition of the preset trigger signal includes at least one of the following:

[0072] The indoor air parameters where the heat pump water heater is located are greater than or equal to the preset pollution parameters;

[0073] Receives a command to activate the ventilation mode from the target home appliance in the room where the heat pump water heater is located;

[0074] The current time point has reached the preset time point.

[0075] It should be noted that the indoor air parameters of the space where the heat pump water heater is located include, but are not limited to, at least one of CO2 concentration and formaldehyde concentration. Target home appliances include, but are not limited to, at least one of range hoods, induction cookers, and rice cookers.

[0076] Step S20: If yes, and the compressor of the heat pump water heater is not running, then control the fan to rotate.

[0077] It should be noted that when the compressor of a heat pump water heater is not running, it indicates that the heat pump water heater is not producing heat and is in a shutdown or standby state. Optionally, when the heat pump water heater is in a shutdown or standby state, the power supply of the heat pump water heater can provide power to components such as the fan within the heat pump water heater.

[0078] If the trigger condition of the preset trigger signal is that the indoor air parameters of the space where the heat pump water heater is located are greater than or equal to the preset pollution parameters, it indicates that the environment of the space where the heat pump water heater is located may pose a threat to the user's health. The fan is controlled to rotate to draw the air in the space where the heat pump water heater is located from the first air outlet into the heat exchange duct. The air flows through the fan in the heat exchange duct and is discharged to the outside from the second air outlet to reduce the concentration of indoor air parameters that are harmful to the user's health, such as CO2 concentration and formaldehyde concentration, in the space where the heat pump water heater is located. When the indoor air parameters of the space where the heat pump water heater is located are less than the preset pollution parameters, it indicates that the air is harmless to the user's health, and the fan can be controlled to stop rotating to stop drawing the air in the space where the heat pump water heater is located to the outside.

[0079] Optionally, when the CO2 concentration is greater than or equal to the preset CO2 concentration, it indicates that the indoor air parameters of the space where the heat pump water heater is located are greater than or equal to the preset pollution parameters; or, when the formaldehyde concentration is greater than or equal to the preset formaldehyde concentration, it indicates that the indoor air parameters of the space where the heat pump water heater is located are greater than or equal to the preset pollution parameters; when the CO2 concentration is less than the preset CO2 concentration and the formaldehyde concentration is less than or equal to the preset formaldehyde concentration, it indicates that the indoor air parameters of the space where the heat pump water heater is located are less than or equal to the preset pollution parameters.

[0080] Optionally, the preset CO2 concentration or preset formaldehyde concentration is a critical concentration threshold for indoor air parameters that are harmful to user health. When the CO2 concentration is greater than or equal to the preset CO2 concentration, or the formaldehyde concentration is greater than or equal to the preset formaldehyde concentration, it indicates that the air is harmful to user health.

[0081] Optionally, the preset CO2 concentration is 550 PPM.

[0082] Optionally, the CO2 concentration can be obtained by a carbon dioxide detection device installed in the space where the heat pump water heater is located or by a carbon dioxide detection device installed in the heat pump water heater. Similarly, the formaldehyde concentration can be obtained by a formaldehyde detection device installed in the space where the heat pump water heater is located or by a formaldehyde detection device installed in the heat pump water heater.

[0083] The preset trigger signal is triggered when a command to activate the ventilation mode is received from the target household appliance in the room where the heat pump water heater is located.

[0084] Optionally, the target household appliance includes, but is not limited to, at least one of a range hood, an induction cooker, and a rice cooker.

[0085] In one specific embodiment, the heat pump water heater is installed indoors, such as in the kitchen or in an indoor environment connected to the kitchen. When cooking in the kitchen, heat, odors, smoke, and steam are generated. When the compressor of the heat pump water heater is not running, that is, when the heat pump water heater is not heating, it receives a command to activate the ventilation mode from a target home appliance in the room where the heat pump water heater is located. According to the command to activate the ventilation mode, the fan in the heat pump water heater is controlled to rotate, thereby drawing indoor air from the space where the heat pump water heater is located to the outside, reducing the heat contained in the indoor air, and discharging the odors, smoke, and steam contained in the indoor air to the outside. This enables the heat pump water heater to activate its ventilation function through linkage with home appliances when cooking in the kitchen, improving the comfort of using the heat pump water heater.

[0086] Optionally, upon receiving a command to activate the ventilation mode from a target household appliance in the room where the heat pump water heater is located, the target household appliance, such as a range hood or induction cooker, can send a command to activate the ventilation mode to the heat pump water heater when the target household appliance is powered on and in use, indicating that cooking is being done in the kitchen. This command will then control the fan to rotate when the heat pump water heater receives a preset trigger signal triggered by the command to activate the ventilation mode and when the heat pump water heater is not heating.

[0087] Optionally, upon receiving a command to turn off the exhaust mode from the target home appliance, the fan can be controlled to stop rotating. For example, if the target home appliance, such as a range hood or induction cooker, is powered off, indicating that cooking has been completed, a command to turn off the exhaust mode can be sent to the heat pump water heater. Upon receiving the trigger signal from the command to turn off the exhaust mode, the heat pump water heater will control the fan to stop rotating, thus saving energy. Alternatively, in conjunction with situations where the indoor air parameters in the area where the heat pump water heater is located are lower than preset pollution parameters, the fan can be controlled to stop rotating, thereby reducing indoor air parameters through ventilation and ensuring that the indoor air is harmless to the user's health.

[0088] The trigger condition for the preset trigger signal is that the current time point reaches the preset time point.

[0089] Optionally, the time points for exhaust or ventilation can be preset according to actual needs. When the preset time point is reached, the fan in the heat pump water heater will extract the air from the space where the heat pump water heater is located to the outside, achieving a ventilation effect. This allows for air extraction and ventilation of the space where the heat pump water heater is located according to user needs, thereby improving the air quality of the space. The better the air quality, the less harm the space where the heat pump water heater is located poses to the user's health.

[0090] Optionally, a time cycle for exhaust or ventilation can be set, and a preset time point can be determined based on the time cycle. When the preset time point is reached at the current time point, the air in the space where the heat pump water heater is located is extracted to the outside by the fan in the heat pump water heater according to the time cycle, so as to achieve the effect of ventilation according to the time cycle, realize intermittent exhaust and air exchange, and improve the air quality of the space where the heat pump water heater is located.

[0091] Optionally, the triggering condition of the preset trigger signal is that the current time point reaches the preset time point, which can control the fan to rotate for a preset rotation duration. It can be understood that the preset rotation duration is less than the duration corresponding to the time cycle.

[0092] It should be noted that when the trigger signal is a preset trigger signal and the compressor of the heat pump water heater is not running, the fan is controlled to rotate. This allows the air in the space where the heat pump water heater is located to be drawn to the outside by controlling the fan in the heat pump water heater when the heat pump water heater is not heating, thus achieving a ventilation effect. The heat pump water heater can be used as an "exhaust fan", which increases the functionality of the heat pump water heater, improves its cost performance, and enhances the comfort of using the heat pump water heater.

[0093] Optionally, after step S10, the following steps are also included:

[0094] If so, and the compressor of the heat pump water heater is in operation, then the current operating state of the fan is maintained;

[0095] When the compressor is detected to have stopped running, the control fan is made to rotate at the fan speed corresponding to the ventilation mode.

[0096] In one embodiment, the compressor of the heat pump water heater is in operation, indicating that the heat pump water heater is heating or defrosting. To ensure the heating demand of the heat pump water heater, the current operating state of the fan can be maintained. The fan rotation is controlled based on the heating demand of the heat pump heat exchanger. The received preset trigger signal is not responded to immediately. When the compressor is detected to have stopped running, it indicates that the heat pump water heater has completed heating or defrosting. Then, the preset trigger signal is responded to, and the fan is controlled to rotate at the fan speed corresponding to the exhaust mode, so that the heat pump water heater can be used for exhaust ventilation when it is not heating.

[0097] Optionally, when the compressor stops running and only the electric heating is running, the fan can be adjusted according to the ventilation mode.

[0098] Optionally, the fan speed corresponding to the exhaust mode can be the system's default fan speed, such as the fan speed set by the user, the fan speed recorded when the exhaust mode was last turned off, the initial fan speed determined based on the indoor ambient temperature, or the fan speed of the heat pump water heater determined based on indoor air parameters and / or operating status. It can be set according to actual needs and there are no restrictions on this.

[0099] Optionally, if the trigger signal is not a preset trigger signal, no operation is performed, or the operation corresponding to the trigger signal is performed.

[0100] Optionally, step S20 includes: controlling the fan to rotate at the system default fan speed, wherein the system default fan speed can be set by the user in advance or set at the factory.

[0101] As an optional implementation, step S20 includes:

[0102] Obtain the indoor air parameters where the heat pump water heater is located and / or the operating status of the target home appliances in the room;

[0103] Based on the indoor air parameters and / or the operating status, determine the fan speed of the fan in the heat pump water heater, and control the fan to rotate at the specified fan speed.

[0104] Optionally, the fan speed in the heat pump water heater can be determined based on indoor air parameters. This can be achieved by obtaining the difference between the indoor air parameters and preset pollution parameters, and then determining the fan speed based on this difference. Specifically, the larger the difference, the higher the fan speed. A difference greater than 0 and a larger difference indicates worse indoor air quality and greater health risks. In such cases, a higher fan speed can be used to quickly draw indoor air to the outside, thereby improving indoor air quality.

[0105] Optionally, the fan speed of the heat pump water heater can be determined based on the indoor air parameters. The fan speed corresponding to the indoor air parameters can be obtained based on the mapping relationship between the indoor air parameters and the fan speed, without any limitation.

[0106] Optionally, the fan speed in the heat pump water heater can be determined based on the operating status. This can be done when the target appliance is powered on, by determining the fan speed corresponding to that appliance. Different appliances have different impacts on the indoor environment. The fan speed can be set based on the heat generated by the appliance when it is powered on. The greater the heat generated by the appliance, the higher the corresponding fan speed, thus using a higher fan speed to extract the heat generated by the appliance from the room to the outside.

[0107] Optionally, the fan speed of the heat pump water heater can be determined based on the indoor air parameters and the operating status. The first fan speed can be determined based on the indoor air parameters, the second fan speed can be determined based on the operating status, and the fan speed of the heat pump water heater can be determined based on the first fan speed and the second fan speed.

[0108] Optionally, the speed of the first fan can be determined based on indoor air parameters, or the speed of the second fan can be determined based on the operating status, as can be seen in the specific implementation of the above method.

[0109] Optionally, the fan speed of the heat pump water heater is determined based on the speed of the first fan and the speed of the second fan, wherein the fan speed of the heat pump water heater is determined to be greater than the speed of the first fan and the fan speed of the heat pump water heater is determined to be greater than the speed of the second fan.

[0110] Optionally, before the step of obtaining the indoor air parameters where the heat pump water heater is located and / or the operating status of the target household appliances in the room, the method further includes:

[0111] Obtain the ambient temperature of the space where the heat pump water heater is located;

[0112] The initial fan speed is determined based on the ambient temperature, wherein the lower the ambient temperature, the lower the initial fan speed.

[0113] The fan is controlled to operate at the initial fan speed.

[0114] For a detailed implementation, please refer to the second embodiment. In this embodiment, no further details will be provided.

[0115] Optionally, controlling the fan rotation in step S20 includes:

[0116] Obtain the ambient temperature of the space where the heat pump water heater is located;

[0117] The initial fan speed is determined based on the ambient temperature, wherein the lower the ambient temperature, the lower the initial fan speed.

[0118] The fan is controlled to operate at the initial fan speed.

[0119] For a detailed implementation, please refer to the second embodiment. In this embodiment, no further details will be provided.

[0120] As an optional implementation, after step S20, the method further includes:

[0121] Upon receiving a fan speed adjustment command from the heat pump water heater, the fan in the heat pump water heater is controlled to rotate at the fan speed corresponding to the fan speed adjustment command.

[0122] Optionally, the windshield adjustment command can be triggered based on the windshield adjustment control or based on the windshield selection command detected in the windshield selection interface; there is no limitation on this.

[0123] When a fan speed adjustment command is received from the heat pump water heater, the corresponding fan speed is obtained, and then the fan in the heat pump water heater is controlled to rotate according to the fan speed corresponding to the fan speed adjustment command. The fan speed can be adjusted according to the user's needs. For example, by increasing the fan speed, the suction power can be increased to increase the volume of indoor air discharged to the outside per unit time, such as 5 seconds. Alternatively, by decreasing the fan speed, the suction power can be weakened to reduce the volume of indoor air discharged to the outside per unit time, such as 5 seconds.

[0124] As an optional implementation, after step S20, the method further includes:

[0125] The output shows the fan speed corresponding to the operation of the fan in the heat pump water heater, so that the user can know the current fan speed.

[0126] In the technical solution disclosed in this embodiment, when the compressor of the heat pump water heater is not running, it indicates that the heat pump water heater is currently in a shutdown or standby mode. The heat pump water heater is not currently heating, and the fan is not rotating. However, the fan in the heat pump water heater can still draw air from the room to the outside, increasing the functionality of the heat pump water heater. Upon receiving a trigger signal, if the trigger signal is determined to be a preset trigger signal, it indicates that the conditions for the heat pump water heater to perform ventilation are met. The fan is then controlled to rotate, drawing indoor air from the space where the heat pump water heater is located into the heat exchange duct through the first air vent, and expelling the indoor air to the outside through the second air vent. This achieves the effect of ventilation even when the heat pump water heater is not heating, by controlling the rotation of the fan in the heat pump water heater to draw indoor air to the outside. The heat pump water heater is used as an "exhaust fan," increasing its functionality, improving its cost-effectiveness, and enhancing user comfort.

[0127] In the second embodiment proposed based on the first embodiment, before controlling the fan to rotate in step S20, the method further includes:

[0128] The trigger signal activates the exhaust mode of the heat pump water heater when a preset exhaust control is triggered.

[0129] Obtain the indoor air parameters where the heat pump water heater is located and / or the operating status of the target home appliances in the room;

[0130] When the indoor air parameters are greater than or equal to the preset pollution parameters, the step of controlling the fan rotation is executed, and / or, when the operating state is the powered-on working state, the step of controlling the fan rotation is executed.

[0131] In this embodiment, the trigger signal indicates that the heat pump water heater's exhaust mode is activated when the preset exhaust control is triggered, but it does not immediately control the fan in the heat pump system to rotate for ventilation. When the indoor air parameters are greater than or equal to the preset pollution parameters, the step of controlling the fan to rotate is executed, and / or when the operating state is the powered-on working state, the step of controlling the fan to rotate is executed. This allows the fan to rotate when there is a need for exhaust ventilation in the indoor environment, thereby saving energy.

[0132] As an optional implementation, the step of controlling the rotation of the fan includes:

[0133] Based on the indoor air parameters and / or the operating status, the fan speed of the heat pump water heater is determined, and the fan is controlled to rotate at the specified fan speed. For specific implementation, please refer to the first embodiment, which will not be repeated here.

[0134] As an optional implementation, controlling the rotation of the fan in step S20 includes:

[0135] Obtain the ambient temperature of the space where the heat pump water heater is located;

[0136] The initial fan speed is determined based on the ambient temperature, wherein the lower the ambient temperature, the lower the initial fan speed.

[0137] The fan is controlled to operate at the initial fan speed.

[0138] Optionally, the ambient temperature of the space where the heat pump water heater is located can be obtained by a temperature detection device, such as a temperature sensor, installed in the heat pump water heater.

[0139] Optionally, a mapping relationship between ambient temperature and the initial fan speed can be preset, wherein the smaller the ambient temperature value, the smaller the initial fan speed.

[0140] For example, when the ambient temperature is lower than the first preset temperature, the initial fan speed is set to level 1;

[0141] When the ambient temperature is greater than or equal to the first preset temperature and less than the second preset temperature, the initial fan speed is set to level 2.

[0142] When the ambient temperature is greater than or equal to the second preset temperature, the initial fan speed is set to level 3.

[0143] Among them, the fan speed corresponding to the fan speed of the first gear is less than the fan speed corresponding to the second gear, and the fan speed corresponding to the second gear is less than the fan speed corresponding to the third gear.

[0144] Optionally, the first preset temperature is lower than the second preset temperature, and the second preset temperature is lower than the third preset temperature.

[0145] Optionally, the first preset temperature is 5℃ and the second preset temperature is 25℃.

[0146] Understandably, when a heat pump water heater uses a fan for ventilation, in low indoor temperatures, to prevent the initial fan speed from being too high and rapidly drawing heat from the indoor air to the outside, thus lowering the indoor temperature and causing discomfort to users, the initial fan speed is selected according to different ambient temperatures. For example, the lower the ambient temperature, the lower the initial fan speed is used. This avoids the problem of the heat pump water heater rapidly drawing heat from the indoor air to the outside, lowering the indoor temperature and causing user discomfort, while still achieving the effect of ventilation. This improves the cost-effectiveness of the heat pump water heater, enhances its user comfort and convenience, and eliminates the need for manual adjustment by the user.

[0147] The present invention also proposes a heat pump water heater, comprising: a shell, a heat exchange circulation system and a water tank disposed within the shell, the shell having a first air vent and a second air vent, a heat exchange duct forming between the first air vent and the second air vent, and a fan disposed within the heat exchange duct; the heat exchange circulation system comprising a first heat exchanger and a second heat exchanger, the first heat exchanger being located within the water tank and the second heat exchanger being located within the heat exchange duct; the first air vent communicating with the indoor space where the heat pump water heater is located, and the second air vent communicating with the outdoor space via a duct; the heat pump water heater comprising: a memory, a processor, and a control program for the heat pump water heater stored in the memory and executable on the processor, wherein when the control program for the heat pump water heater is executed by the processor, the steps of the control method for the heat pump water heater in any of the above embodiments are implemented.

[0148] The present invention also proposes a readable storage medium storing a control program for a heat pump water heater, wherein when the control program is executed by a processor, it implements the steps of the control method for the heat pump water heater as described in any of the above embodiments.

[0149] The embodiments of the heat pump water heater and readable storage medium provided by the present invention include all the technical features of the various embodiments of the control method of the heat pump water heater described above. The extended and explanatory contents of the specification are basically the same as those of the various embodiments of the control method of the heat pump water heater described above, and will not be repeated here.

[0150] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0151] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0152] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a mobile terminal (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) to execute the methods of each embodiment of the present invention.

[0153] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control method of a heat pump water heater, characterized by, The heat pump water heater comprises a shell, a heat exchange circulating system and a water tank arranged in the shell, the shell is provided with a first air inlet and a second air inlet, a heat exchange air duct is formed between the first air inlet and the second air inlet, and a fan is arranged in the heat exchange air duct; the heat exchange circulating system comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is located in the water tank, and the second heat exchanger is located in the heat exchange air duct; the first air inlet is communicated with an indoor space of the heat pump water heater, the second air inlet is communicated with an outdoor space through a duct, and a third air inlet is arranged on the duct, the third air inlet is communicated with the indoor space, and a baffle is arranged at the third air inlet, the baffle is configured to close the third air inlet when being located at a first position, and the second air inlet is communicated with the outdoor space through the duct, or the baffle is configured to open the third air inlet and close the second air inlet when being located at a second position. The control method of the heat pump water heater comprises: When a trigger signal is received, it is determined whether the trigger signal is a preset trigger signal; If yes, and the compressor of the heat pump water heater is in a non-running state, then the fan is controlled to rotate; If yes, and the compressor of the heat pump water heater is in a running state, the fan is kept rotating at a current rotating speed, and when it is detected that the compressor stops running, the fan is controlled to rotate at a fan rotating speed corresponding to an air extraction mode; The step of controlling the fan to rotate comprises: Obtaining an indoor air parameter of the heat pump water heater and / or an operating state of a target household electrical appliance in an indoor space of the heat pump water heater, the target household electrical appliance comprises at least one of a range hood, an induction cooker and a rice cooker; According to the indoor air parameter and / or the operating state, a fan rotating speed of the fan in the heat pump water heater is determined, and the fan is controlled to rotate at the fan rotating speed; Before the step of obtaining the indoor air parameter of the heat pump water heater and / or the operating state of the target household electrical appliance in the indoor space of the heat pump water heater, the following steps are further included: Obtaining an environmental temperature in a space environment of the heat pump water heater; According to the environmental temperature, an initial fan rotating speed of the fan is determined, wherein the smaller the temperature value corresponding to the environmental temperature is, the smaller the initial fan rotating speed is; The fan is controlled to operate at the initial fan rotating speed.

2. The control method of the heat pump water heater according to claim 1, wherein The trigger condition of the preset trigger signal comprises at least one of the following modes: The indoor air parameter of the heat pump water heater is greater than or equal to a preset pollution parameter; An opening air extraction mode instruction sent by a target household electrical appliance in an indoor space of the heat pump water heater is received; A current time point reaches a preset time point.

3. The control method of the heat pump water heater according to claim 1, wherein Before the step of controlling the fan to rotate, the following steps are further included: When the trigger signal is triggered based on a preset air extraction control, the air extraction mode of the heat pump water heater is opened; The indoor air parameter of the heat pump water heater and / or the operating state of the target household electrical appliance in the indoor space of the heat pump water heater are obtained; When the indoor air parameter is greater than or equal to a preset pollution parameter, the step of controlling the fan to rotate is executed, and / or when the operating state is a powered-on working state, the step of controlling the fan to rotate is executed.

4. The control method of a heat pump water heater as claimed in claim 1, wherein, The step of controlling the rotation of the fan further comprises: receiving a wind speed regulation instruction of the fan in the heat pump water heater, and controlling the fan in the heat pump water heater to rotate at a rotation speed corresponding to the wind speed regulation instruction.

5. A heat pump water heater characterized by, The heat pump water heater comprises a shell, a heat exchange circulation system and a water tank arranged in the shell, the shell is provided with a first air outlet and a second air outlet, a heat exchange air duct is formed between the first air outlet and the second air outlet, and a fan is arranged in the heat exchange air duct; the heat exchange circulation system comprises a first heat exchanger and a second heat exchanger, the first heat exchanger is arranged in the water tank, and the second heat exchanger is arranged in the heat exchange air duct; the first air outlet is in communication with an indoor space of the heat pump water heater, the second air outlet is in communication with an outdoor space through an air pipe, the air pipe is provided with a third air outlet, the third air outlet is in communication with the indoor space, a baffle is arranged at the third air outlet, the baffle is configured to close the third air outlet when being arranged at a first position, and the baffle is configured to open the third air outlet and close an air duct in communication with the outdoor space when being arranged at a second position. The heat pump water heater further comprises a memory, a processor and a control program of the heat pump water heater stored in the memory and executable on the processor, and the control program of the heat pump water heater is executed by the processor to realize the steps of the control method of the heat pump water heater according to any one of claims 1-4.

6. A readable storage medium, characterized by, The readable storage medium stores a control program of the heat pump water heater, and the control program of the heat pump water heater is executed by the processor to realize the steps of the control method of the heat pump water heater according to any one of claims 1-4.

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