Heat pump water heater, starting control method of heat pump water heater, controller and medium

Abstract

The embodiment of the invention provides a heat pump water heater and a starting control method thereof, a controller and a medium. The starting control method comprises the steps that in response to a starting instruction, the target frequency of a compressor is obtained; then, at least one target operation platform is determined according to the target frequency, the frequency of the compressor is sequentially increased to all the target operation platforms, and the compressor is controlled to keep operating for the corresponding preset duration on all the target operation platforms; and then, when the operation duration of the compressor on the last target operation platform reaches the preset duration, the operation frequency of the compressor is adjusted to the target frequency. When the heat pump water heater is started after being frozen for a long time in the low-temperature environment, the situation that a refrigerant boils rapidly and takes away a large amount of engine oil can be avoided through control over the compressor starting platform and throttling, and therefore the requirement for lubrication of compressor refrigerating machine oil can be met, and the reliability of a unit used by a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump water heaters, and in particular to a heat pump water heater and a startup control method, a controller and a medium thereof. Background Art

[0002] In the related art, when the heat pump water heater is frozen in a low-temperature environment for a long time, the refrigerant will be deposited in the refrigeration oil of the compressor. Therefore, when the heat pump water heater is started again after being frozen in a low-temperature environment for a long time, the refrigerant will boil quickly, thereby taking away a large amount of oil and causing the compressor lubrication to fail, so it is difficult to meet the lubrication needs of the compressor. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a heat pump water heater and a startup control method, a controller and a medium thereof, aiming to meet the refrigeration oil lubrication requirements of the compressor when it is started in a long-term low temperature environment.

[0004] In a first aspect, an embodiment of the present application provides a startup control method for a heat pump water heater, the method comprising:

[0005] In response to the start command, obtaining a target frequency of the compressor;

[0006] Determine at least one target operating platform according to the target frequency, increase the frequency of the compressor to each of the target operating platforms in sequence, and control the compressor to maintain operation at each of the target operating platforms for a corresponding preset time;

[0007] When the operation time of the compressor at the last target operation platform reaches a preset time, the operation frequency of the compressor is adjusted to the target frequency.

[0008] According to some embodiments of the present application, determining at least one target operating platform according to the target frequency includes one of the following:

[0009] When the target frequency is less than the first platform and the target frequency is not determined by the current ambient temperature and the temperature at the bottom of the water tank, determining the first platform as the target operating platform;

[0010] When the target frequency is greater than or equal to the first platform, all operating platforms less than or equal to the target frequency are used as the target operating platforms.

[0011] According to some embodiments of the present application, taking all operating platforms with a frequency less than or equal to the target frequency as the target operating platform includes one of the following:

[0012] When the target frequency is greater than or equal to the first platform and less than the second platform, determining the first platform as the target operating platform;

[0013] When the target frequency is greater than or equal to the second platform and less than the third platform, determining the first platform and the second platform as the target operating platforms;

[0014] When the target frequency is greater than or equal to the third platform and less than the fourth platform, determining the first platform, the second platform and the third platform as the target operating platforms;

[0015] When the target frequency is greater than or equal to the fourth platform and less than the fifth platform, determining the first platform, the second platform, the third platform and the fourth platform as the target operating platforms;

[0016] When the target frequency is greater than or equal to the fifth platform, the first platform, the second platform, the third platform, the fourth platform and the fifth platform are determined as the target operating platforms.

[0017] According to some embodiments of the present application, after responding to the start instruction, the method further includes:

[0018] During startup of the compressor, when a first frequency limiting signal is received and the target frequency after frequency limiting is less than the first platform, the operation of the compressor to the first platform is cancelled, and the frequency of the compressor is directly increased to the target frequency after frequency limiting.

[0019] According to some embodiments of the present application, it further includes:

[0020] In the case where the compressor is running at the target operating platform, when a second frequency limiting signal is received and the target frequency after frequency limiting is less than the current operating platform, the compressor is controlled to exit the current operating platform.

[0021] According to some embodiments of the present application, after responding to the start instruction, the method further includes one of the following:

[0022] When the heat pump water heater is in the capacity test mode, the compressor is stopped from running on the first platform, the second platform, the third platform, the fourth platform and the fifth platform;

[0023] When the heat pump water heater is in defrosting mode, the compressor is controlled to operate on the first platform and the second platform in sequence, and the compressor is cancelled from operating on the third platform, the fourth platform and the fifth platform.

[0024] According to some embodiments of the present application, after obtaining the target frequency of the compressor, the method further includes:

[0025] When the target frequency is less than the first platform and the target frequency is determined by the current ambient temperature and the lower temperature of the water tank, the compressor is cancelled from running to the first platform, and the frequency of the compressor is directly increased to the target frequency after frequency limiting.

[0026] According to some embodiments of the present application, one operating platform corresponds to one platform frequency and one platform operation duration; the method further includes:

[0027] Get the current ambient temperature;

[0028] The platform frequency and platform operation duration of the operating platform are adjusted according to the current ambient temperature.

[0029] According to some embodiments of the present application, adjusting the platform frequency and platform operation duration of the operating platform according to the current ambient temperature includes one of the following:

[0030] When the current ambient temperature is lower than a first preset temperature, reducing the platform frequency of the operating platform and extending the platform operation time of the operating platform;

[0031] When the current ambient temperature is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, the platform frequency and the platform operation time of the operating platform are kept unchanged;

[0032] When the current ambient temperature is greater than a second preset temperature, the platform frequency of the operating platform is increased, and the platform operation time of the operating platform is shortened.

[0033] According to some embodiments of the present application, the heat pump water heater is provided with an electronic expansion valve; after adjusting the platform frequency and platform operation duration of the operating platform according to the current ambient temperature, the method further includes:

[0034] Obtaining the platform frequency after adjustment of the operating platform;

[0035] The opening degree of the electronic expansion valve is controlled according to the adjusted platform frequency.

[0036] In a second aspect, an embodiment of the present application provides a controller comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the startup control method of the heat pump water heater of the first aspect mentioned above when running the computer program.

[0037] In a third aspect, an embodiment of the present application provides a heat pump water heater, comprising the controller of the second aspect described above.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the startup control method of the heat pump water heater according to the first aspect.

[0039] In a fifth aspect, an embodiment of the present application provides a computer program product, comprising a computer program or computer instructions, characterized in that the computer program or the computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes the computer program or the computer instructions, so that the computer device executes the startup control method of the heat pump water heater as described in the first aspect above.

[0040] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: first, the embodiment of the present application will respond to the start-up instruction and obtain the target frequency of the compressor; then, at least one target operating platform is determined according to the target frequency, the frequency of the compressor is increased to each target operating platform in turn, and the compressor is controlled to maintain operation at each target operating platform for a preset time; then, when the operation time of the compressor at the last target operating platform reaches the preset time, the operating frequency of the compressor is adjusted to the target frequency. When the heat pump water heater of the embodiment of the present application is started after being frozen for a long time in a low-temperature environment, the refrigerant can be prevented from boiling rapidly and taking away a large amount of oil through the control of the compressor start-up platform and throttling, thereby meeting the requirements of the compressor refrigeration oil lubrication and improving the reliability of the unit used by users.

[0041] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0043] Figure 1 is a system structure diagram of a heat pump water heater provided by an embodiment of the present application;

[0044] Figure 2 is a flow chart of a startup control method of a heat pump water heater provided by an embodiment of the present application;

[0045] Figure 3 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0046] Figure 4is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0047] Figure 5 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0048] Figure 6 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0049] Figure 7 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0050] Figure 8 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0051] Fig. 9 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0052] Fig.10 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0053] Fig.11 is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application;

[0054] Fig.12 This is a schematic diagram of frequency changes during the startup of a heat pump water heater provided by an embodiment of the present application;

[0055] Fig.13 It is a schematic diagram of a controller for executing a startup control method of a heat pump water heater provided in one embodiment of the present application. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0057] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0059] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0060] In some cases, after the heat pump water heater has been frozen in a low-temperature environment for a long time, the refrigerant will be deposited in the refrigeration oil of the compressor. Therefore, when the heat pump water heater is started again after being frozen in a low-temperature environment for a long time, the refrigerant will boil quickly, taking away a large amount of oil and causing the compressor lubrication to fail, so it is difficult to meet the lubrication needs of the compressor.

[0061] Based on the above situation, the embodiment of the present application proposes a heat pump water heater and its startup control method, controller and medium, which are intended to meet the refrigeration oil lubrication requirements when the compressor is started in a long-term low-temperature environment.

[0062] The various embodiments of the heat pump water heater of the present application are further described below in conjunction with the accompanying drawings.

[0063] like Figure 1 As shown, Figure 1 This is a system structure diagram of a heat pump water heater provided in one embodiment of the present application.

[0064] In one embodiment, the heat pump water heater of the embodiment of the present application is provided with a compressor 110, an outdoor heat exchanger 120, a water tank heat exchange coil 130 and a water tank 200, wherein the compressor 110, the outdoor heat exchanger 120 and the water tank heat exchange coil 130 are interconnected, and a refrigerant circulation loop is formed between the compressor 110, the outdoor heat exchanger 120 and the water tank heat exchange coil 130, and in addition, the water tank heat exchange coil 130 is arranged in the water tank 200 and is used to heat the domestic water in the water tank 200.

[0065] In one embodiment, the heat pump water heater of the embodiment of the present application is further provided with an electronic expansion valve 140 , and the electronic expansion valve 140 is arranged between the water tank heat exchange coil 130 and the outdoor heat exchanger 120 .

[0066] In one embodiment, the heat pump water heater of the embodiment of the present application is also provided with a four-way valve 150, wherein the four-way valve 150 is respectively connected to the exhaust port of the compressor 110, the return air port of the compressor 110, the water tank heat exchange coil 130 and the outdoor heat exchanger 120.

[0067] In one embodiment, an electric heating device 210 is further disposed in the water tank 200 , and the electric heating device 210 can heat the domestic water in the water tank 200 when powered on.

[0068] It should be noted that the heat pump water heater is an energy-efficient device that heats water by absorbing heat from the air or other low-temperature heat sources. In some cases, such as when the ambient temperature is very low, the heat pump water heater can be equipped with an electric heating device 210 as an auxiliary heating means to ensure that sufficient hot water can be provided even under extreme weather conditions.

[0069] It is understood that the electric heating device 210 can be spiral, U-shaped or other shapes, and its material can be stainless steel, high-grade nickel alloy, copper or other materials. These components can be customized according to customer requirements or market demand to adapt to different heating performance and heat transfer media.

[0070] In one embodiment, a water inlet pipe 220 and a water outlet pipe 230 are further disposed in the water tank 200 , wherein the water inlet pipe 220 is connected to the lower part of the water tank 200 , and the water outlet pipe 230 is connected to the upper part of the water tank 200 .

[0071] Among them, since the density of hot water is less than that of cold water, when the electric heating device 210 is turned on, the hot water in the lower part of the water tank 200 will naturally rise, while the cold water in the upper part of the water tank 200 will naturally fall, thereby forming a thermal convection phenomenon. Therefore, the embodiment of the present application designs the water inlet at the bottom so that the cold water can naturally sink after entering, while the hot water flows out from the upper water outlet, so that the user can use water with a higher temperature.

[0072] In addition, if the water inlet and the water outlet are both located at the same horizontal position, the incoming cold water may mix with the hot water in the water tank 200, resulting in a decrease in the outlet water temperature. Therefore, the embodiment of the present application can reduce the mixing of cold water and hot water by placing the water inlet at the lower position of the water tank 200, thereby maintaining the temperature of the hot water.

[0073] In addition, since the efficiency of hot water use is very important, the embodiment of the present application designs the water outlet at the upper position of the water tank 200. When only the upper electric heating device 210 is started, the mixing of the upper hot water with the lower cold water before being used can be greatly reduced, thereby improving the utilization efficiency of hot water.

[0074] In addition, for some water tanks 200 for storing drinking water, sediment may accumulate at the bottom of the water tank 200. Therefore, the water inlet is designed at the lower part of the water tank 200 in the embodiment of the present application, which helps to keep these sediments at the bottom of the water tank 200 instead of flowing out through the water outlet, so as to ensure the cleanliness of the water quality.

[0075] Based on the hardware structure of the heat pump water heater in each of the above embodiments, various embodiments of the startup control method of the heat pump water heater of the present application are respectively proposed below.

[0076] like Figure 2 As shown, Figure 2 It is a flow chart of a startup control method of a heat pump water heater provided by an embodiment of the present application; the startup control method may include but is not limited to step S210, step S220 and step S230.

[0077] Step S210, in response to the start instruction, obtaining the target frequency of the compressor;

[0078] Step S220, determining at least one target operating platform according to the target frequency, increasing the frequency of the compressor to each target operating platform in sequence, and controlling the compressor to maintain operation at each target operating platform for a corresponding preset time;

[0079] Step S230: When the operation time of the compressor at the last target operation platform reaches a preset time, the operation frequency of the compressor is adjusted to the target frequency.

[0080] In one embodiment, after receiving the start-up instruction, the heat pump water heater will obtain the target frequency of the compressor, and then, the heat pump water heater will determine one or more target operating platforms for the compressor to operate according to the size of the target frequency; then, if there is only one target operating platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the target operating platform, and operate at the target operating platform for a corresponding preset time, and then adjust the operating frequency of the compressor to the target frequency; if there are multiple target operating platforms, the heat pump water heater will control the frequency of the compressor to gradually increase from low to high to each target operating platform, and maintain the corresponding preset time at each target operating platform. When the compressor has run all the target operating platforms, the operating frequency of the compressor is adjusted to the target frequency.

[0081] It should be noted that one operating platform corresponds to one platform frequency, and different operating platforms correspond to different platform frequencies. The compressor operates on the operating platform, that is, the compressor works at the platform frequency of the operating platform.

[0082] In addition, an operating platform may also correspond to a platform operating duration, that is, the preset duration mentioned above; wherein, different operating platforms may correspond to different platform operating durations, or may correspond to the same platform operating duration, and the embodiments of the present application do not make specific limitations on this.

[0083] It should be noted that the above-mentioned platform frequency and platform operation time may be preset or adjusted appropriately according to the ambient temperature, and the embodiments of the present application do not specifically limit this.

[0084] It is worth noting that when the heat pump water heater of the embodiment of the present application is started after being frozen for a long time in a low-temperature environment, the compressor starting platform and throttling control can be used to prevent the refrigerant from boiling rapidly and carrying away a large amount of oil, thereby meeting the compressor refrigeration oil lubrication requirements and improving the reliability of the unit used by users.

[0085] It should be noted that the above step S220 of determining at least one target operating platform according to the target frequency may include but is not limited to: Figure 3 or Figure 4 There are two implementation situations, as follows:

[0086] like Figure 3 As shown, Figure 3 It is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application; the process of determining the above-mentioned target operating platform may include but is not limited to step S310 and step S320.

[0087] Step S310: when the target frequency is less than the first platform and the target frequency is not determined by the current ambient temperature and the lower temperature of the water tank;

[0088] Step S320: Determine the first platform as the target operating platform.

[0089] In one embodiment, if the target frequency of the compressor is lower than the platform frequency of the first platform, and the target frequency is not obtained by looking up the table based on the current ambient temperature and the lower temperature of the water tank, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform at a first increasing speed. After the compressor has been running at the first platform for the first platform operating time, the heat pump water heater will gradually reduce the operating frequency of the compressor and finally adjust the operating frequency of the compressor to the target frequency.

[0090] like Figure 4 As shown, Figure 4 It is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application; the process of determining the above-mentioned target operating platform may include but is not limited to step S410 and step S420.

[0091] Step S410: when the target frequency is greater than or equal to the first platform;

[0092] Step S420: All operating platforms with a frequency less than or equal to the target frequency are taken as target operating platforms.

[0093] In one embodiment, if the target frequency of the compressor is higher than the platform frequency of the first platform, the heat pump water heater will control the frequency of the compressor to gradually increase to all operating platforms lower than the target frequency, and run for the corresponding platform operating time at each platform operating time. When the compressor has run for the corresponding platform operating time at the last operating platform, the heat pump water heater will directly adjust the operating frequency of the compressor to the target frequency.

[0094] Specifically, regarding the above Figure 4 , which may include the following situations:

[0095] The first case: when the target frequency is greater than or equal to the first platform and less than the second platform, the first platform is determined as the target operating platform. Specifically, if the target frequency of the compressor is between the first platform and the second platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform at the first increase speed. After the compressor has been running at the first platform for the first platform operation time, the heat pump water heater will adjust the operating frequency of the compressor from the first platform to the target frequency.

[0096] The second case: when the target frequency is greater than or equal to the second platform and less than the third platform, the first platform and the second platform are determined as the target operating platforms. Specifically, if the target frequency of the compressor is between the second platform and the third platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform at the first increasing speed, and operate on the first platform for the first platform operation time, then control the frequency of the compressor to gradually increase from the first platform to the second platform at the second increasing speed, and after operating on the second platform for the second platform operation time, adjust the operating frequency of the compressor from the second platform to the target frequency.

[0097] The third case: when the target frequency is greater than or equal to the third platform and less than the fourth platform, the first platform, the second platform and the third platform are determined as the target operating platforms. Specifically: if the target frequency of the compressor is between the third platform and the fourth platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform at the first boosting speed, and operate on the first platform for the first platform operation time, then control the frequency of the compressor to gradually increase from the first platform to the second platform at the second boosting speed, and operate on the second platform for the second platform operation time, then control the frequency of the compressor to gradually increase from the second platform to the third platform at the third boosting speed, and after operating on the third platform for the third platform operation time, adjust the operating frequency of the compressor from the third platform to the target frequency.

[0098] The fourth case: when the target frequency is greater than or equal to the fourth platform and less than the fifth platform, the first platform, the second platform, the third platform and the fourth platform are determined as the target operating platforms. Specifically: if the target frequency of the compressor is between the fourth platform and the fifth platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform according to the first boosting speed, and operate on the first platform for the first platform operation time, then control the frequency of the compressor to gradually increase from the first platform to the second platform according to the second boosting speed, and operate on the second platform for the second platform operation time, then control the frequency of the compressor to gradually increase from the second platform to the third platform according to the third boosting speed, and operate on the third platform for the third platform operation time, then control the frequency of the compressor to gradually increase from the third platform to the fourth platform according to the fourth boosting speed, and operate on the fourth platform for the fourth platform operation time, then adjust the operating frequency of the compressor from the fourth platform to the target frequency.

[0099] The fifth situation: when the target frequency is greater than or equal to the fifth platform, the first platform, the second platform, the third platform, the fourth platform and the fifth platform are determined as the target operating platforms. Specifically: if the target frequency of the compressor is greater than or equal to the fifth platform, the heat pump water heater will control the frequency of the compressor to gradually increase to the first platform according to the first boosting speed, and operate on the first platform for the first platform operation time, then control the frequency of the compressor to gradually increase from the first platform to the second platform according to the second boosting speed, and operate on the second platform for the second platform operation time, then control the frequency of the compressor to gradually increase from the second platform to the third platform according to the third boosting speed, and operate on the third platform for the third platform operation time, then control the frequency of the compressor to gradually increase from the third platform to the fourth platform according to the fourth boosting speed, and operate on the fourth platform for the fourth platform operation time, then control the frequency of the compressor to gradually increase from the fourth platform to the fifth platform according to the fifth boosting speed, and operate on the fifth platform for the fifth platform operation time, then adjust the operating frequency of the compressor from the fifth platform to the target frequency.

[0100] In addition, if Figure 5 As shown, Figure 5 It is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application; after responding to the startup instruction, the startup control method of the embodiment of the present application may also include but is not limited to step S510 and step S520.

[0101] Step S510: During the start-up of the compressor, a first frequency limiting signal is received and the target frequency after frequency limiting is less than a first platform;

[0102] Step S520, cancel the compressor running to the first platform, and directly increase the frequency of the compressor to the target frequency after frequency limiting.

[0103] In one embodiment, after receiving the start command, if a first frequency limiting signal is received, such as low evaporation temperature frequency limiting, current frequency limiting, voltage frequency limiting or exhaust frequency limiting, and the frequency limiting frequency is lower than the platform frequency of the first platform, then the first platform will be cancelled, that is, the compressor will no longer be operated on the first platform and then lowered, but the frequency of the compressor will be directly increased to the target frequency after frequency limiting.

[0104] It should be noted that the above-mentioned first frequency limiting signal may be a frequency limiting signal generated when the evaporation temperature is too low, a frequency limiting signal generated when the current is too high, a frequency limiting signal generated when the voltage is too high, a frequency limiting signal generated when the exhaust temperature or pressure is too high, or other types of frequency limiting signals, and the embodiments of the present application do not make specific limitations on this.

[0105] In addition, if Figure 6 As shown, Figure 6 It is a flow chart of a startup control method of a heat pump water heater provided in another embodiment of the present application; the startup control method of the embodiment of the present application may also include but is not limited to step S610 and step S620.

[0106] Step S610: When the compressor is running at the target operating platform, a second frequency limiting signal is received and the target frequency after frequency limiting is less than the current operating platform;

[0107] Step S620: Control the compressor to exit the current operation platform.

[0108] In one embodiment, when the compressor is running on the target operating platform, if it receives a second frequency limiting signal, such as low evaporation temperature frequency limiting, current frequency limiting, voltage frequency limiting or exhaust frequency limiting, and the frequency limiting frequency is lower than the platform frequency of the current operating platform, then the compressor will be controlled to exit the current operating platform and the operating frequency of the compressor will be lowered.

[0109] It should be noted that the above-mentioned first frequency limiting signal may be a frequency limiting signal generated when the evaporation temperature is too low, a frequency limiting signal generated when the current is too high, a frequency limiting signal generated when the voltage is too high, a frequency limiting signal generated when the exhaust temperature or pressure is too high, or other types of frequency limiting signals, and the embodiments of the present application do not make specific limitations on this.

[0110] It should be noted that the embodiment of the present application also obtains the current operating mode of the heat pump water heater and selects the target operating platform according to the current operating mode, which may include but is not limited to Figure 7 or Figure 8 There are two implementation scenarios, as follows:

[0111] like Figure 7 As shown, Figure 7 It is a flow chart of a startup control method of a heat pump water heater provided in another embodiment of the present application; the startup control method of the embodiment of the present application may also include but is not limited to step S710 and step S720.

[0112] Step S710, when the heat pump water heater is in the capacity test mode;

[0113] Step S720, canceling the compressor running on the first platform, the second platform, the third platform, the fourth platform and the fifth platform.

[0114] In one embodiment, when the heat pump water heater is undergoing a capacity test, in order to detect various capacity parameters of the heat pump water heater, it is necessary to control the heat pump water heater to run to each operating platform in turn, so that the state parameters of the compressor at each operating platform can be obtained.

[0115] like Figure 8 As shown, Figure 8 It is a flow chart of a startup control method of a heat pump water heater provided in another embodiment of the present application; the startup control method of the embodiment of the present application may also include but is not limited to step S810 and step S820.

[0116] Step S810, when the heat pump water heater is in defrosting mode;

[0117] Step S820, control the compressor to operate on the first platform and the second platform in sequence, and cancel the compressor operating on the third platform, the fourth platform and the fifth platform.

[0118] In one embodiment, if the heat pump water heater is defrosted normally, the compressor will only run on the first platform and the second platform after starting, and will not run on the third platform, the fourth platform and the fifth platform. In this way, the compressor is controlled to run at a low frequency during the defrost period, which can achieve the defrost effect while achieving the purpose of energy saving.

[0119] In addition, if Fig. 9 As shown, Fig. 9 It is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application; after obtaining the target frequency of the compressor, the startup control method of the embodiment of the present application may also include but is not limited to step S910 and step S920.

[0120] Step S910: when the target frequency is less than the first platform and the target frequency is determined by the current ambient temperature and the lower temperature of the water tank;

[0121] Step S920, cancel the operation of the compressor to the first platform, and directly increase the frequency of the compressor to the target frequency after frequency limiting.

[0122] In one embodiment, if the target frequency of the compressor is lower than the platform frequency of the first platform, and the target frequency is obtained by looking up the table based on the current ambient temperature and the lower temperature of the water tank, the heat pump water heater will cancel the compressor running to the first platform, but directly increase the frequency of the compressor to the target frequency after frequency limiting.

[0123] In addition, if Fig.10 As shown, Fig.10 It is a flow chart of a start-up control method for a heat pump water heater provided in another embodiment of the present application; one operating platform corresponds to one platform frequency and one platform operation time; the adjustment process of the platform frequency and the platform operation time may include but is not limited to step S1010 and step S1020.

[0124] Step S1010, obtaining the current ambient temperature;

[0125] Step S1020: adjusting the platform frequency and platform operation duration of the operating platform according to the current ambient temperature.

[0126] In one embodiment, for the platform frequency and platform operation time of each operating platform, the embodiment of the present application will also be adjusted according to the current ambient temperature. Specifically, if the current ambient temperature is less than the first preset temperature, it means that the compressor is started in an extremely low temperature environment. At this time, in order to start smoothly, the platform frequency of the operating platform can be appropriately reduced, and the platform operation time of the operating platform can be extended; if the current ambient temperature is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, the platform frequency and platform operation time of the operating platform are kept unchanged; if the current ambient temperature is greater than the second preset temperature, it means that the compressor is started in a relatively high temperature environment. At this time, the lubrication problem caused by the startup is relatively small, so the platform frequency of the operating platform can be appropriately increased, and the platform operation time of the operating platform can be shortened.

[0127] In addition, if Fig.11 As shown, Fig.11 It is a flow chart of a startup control method of a heat pump water heater provided by another embodiment of the present application; regarding the opening adjustment logic of the electronic expansion valve, it may include but is not limited to step S1110 and step S1120.

[0128] Step S1110, obtaining the platform frequency after the operation platform is adjusted;

[0129] Step S1120: Control the opening of the electronic expansion valve according to the adjusted platform frequency.

[0130] In one embodiment, for the opening of the electronic expansion valve during the startup process, the embodiment of the present application can obtain the current ambient temperature, adjust the platform frequency of the operating platform according to the current ambient temperature, and then control the opening of the electronic expansion valve according to the adjusted platform frequency.

[0131] Based on the startup control method of the heat pump water heater of each of the above-mentioned embodiments, overall embodiments of the startup control method of the heat pump water heater of the present application are respectively proposed below.

[0132] like Fig.12 As shown, Fig.12 This is a schematic diagram of the frequency change of a heat pump water heater during startup provided by an embodiment of the present application. The specific scheme of the heat pump system startup operation mode in a low temperature environment proposed by the embodiment of the present application is as follows:

[0133] (1) When the compressor switches from off to on, it must remain on the five platforms of PLAT_FREQ1_ADD, PLAT_FREQ2_ADD, PLAT_FREQ3_ADD, PLAT_FREQ4_ADD, and PLAT_FREQ5_ADD for a period of time.

[0134] (2) PLAT_FREQ1_ADD platform keeps running PLAT_TIME1_ADD, PLAT_FREQ2_ADD platform keeps running PLAT_TIME2_ADD, PLAT_FREQ3_ADD platform keeps running PLAT_TIME3_ADD, PLAT_FREQ4_ADD platform keeps running PLAT_TIME4_ADD, LAT_FREQ5_ADD platform keeps running PLAT_TIME5_ADD.

[0135] (3) When the starting target frequency is ≤ PLAT_FREQ1_ADD, first increase the frequency to PLAT_FREQ1_ADD at a speed of FREQ_UP_SPD1_ADD, such as 1Hz / s, and keep PLAT_FREQ1_ADD running for PLAT_TIME1_ADD, and then reduce the frequency to the target frequency at a speed of FREQ_DW_SPD1_ADD, such as 1Hz / s. If the target frequency of the subsequent operation is greater than PLAT_FREQ1_ADD, when the frequency increases, it is still necessary to run PLAT_TIME1_ADD at PLAT_FREQ1_ADD before increasing to the target frequency.

[0136] (4) Every time when the target frequency is greater than PLAT_FREQ2_ADD and the actual operating frequency reaches PLAT_FREQ2_ADD, it is necessary to keep running on the PLAT_FREQ2_ADD platform for PLAT_TIME2_ADD time. If the frequency drops during the operation of the PLAT_FREQ2_ADD platform due to the decrease in target frequency, protection or frequency limiting, it is no longer necessary to keep running on the PLAT_FREQ2_ADD platform for PLAT_TIME2_ADD and the frequency will drop to the target frequency immediately.

[0137] (5) The processing of the third, fourth and fifth platforms is the same as that of the second platform.

[0138] (6) If the evaporation temperature is too low to limit the frequency, current limit the frequency, voltage limit the frequency or exhaust limit the frequency during startup, and the limit frequency is lower than the PLAT_FREQ1_ADD platform, the PLAT_FREQ1_ADD platform operation is canceled.

[0139] (7) When the platform is running, if the evaporation temperature is too low to limit the frequency, current limit the frequency, voltage limit the frequency or exhaust limit the frequency, and the limit frequency is lower than the platform frequency, the current platform operation will be exited.

[0140] (8) During the capacity test, the compressor will not run on the first, second, third, fourth and fifth platforms after starting. During normal defrosting, it is not necessary to run on the third, fourth and fifth platforms, but it is necessary to run on the first and second platforms.

[0141] (9) If the target frequency obtained by looking up the table of the current ambient temperature T4 and the lower temperature of the water tank T5L is lower than the first platform, there is no need to run the first platform.

[0142] (10) Ambient temperature T4<T4_FrqPlat_ADD, for example, when T4_FrqPlat_ADD=0℃;

[0143] PLAT_FREQ1_ADD=FrqPlat1_ADD1; PLAT_TIME1_ADD=TimePlat1_ADD1;

[0144] PLAT_FREQ2_ADD=FrqPlat2_ADD1; PLAT_TIME2_ADD=TimePlat2_ADD1;

[0145] PLAT_FREQ3_ADD=FrqPlat3_ADD1; PLAT_TIME3_ADD=TimePlat3_ADD1;

[0146] PLAT_FREQ4_ADD=FrqPlat4_ADD1; PLAT_TIME4_ADD=TimePlat4_ADD1;

[0147] PLAT_FREQ5_ADD=FrqPlat5_ADD1; PLAT_TIME5_ADD=TimePlat5_ADD1 s.

[0148] Among them, the platform operation frequency is 15-60 Hz, and the operation frequency gradually increases from platform one to platform five; the platform operation time is 120-300s.

[0149] (11) Ambient temperature T4 ≥ (T4_FrqPlat_ADD + 3°C), for example, when T4_FrqPlat_ADD = 0°C;

[0150] PLAT_FREQ1_ADD=FrqPlat1_ADD2; PLAT_TIME1_ADD=TimePlat1_ADD2;

[0151] PLAT_FREQ2_ADD=FrqPlat2_ADD2; PLAT_TIME2_ADD=TimePlat2_ADD2;

[0152] PLAT_FREQ3_ADD=FrqPlat3_ADD2; PLAT_TIME3_ADD=TimePlat3_ADD2;

[0153] PLAT_FREQ4_ADD=FrqPlat4_ADD2; PLAT_TIME4_ADD=TimePlat4_ADD2;

[0154] PLAT_FREQ5_ADD=FrqPlat5_ADD2; PLAT_TIME5_ADD=TimePlat5_ADD2.

[0155] Among them, the platform operation frequency is 50-120 Hz, and the operation frequency gradually increases from platform one to platform five; the platform operation time is 40-140s.

[0156] (12) T4_FrqPlat_ADD≤T4<(T4_FrqPlat_ADD+3°C), for example, when T4_FrqPlat_ADD=0°C, the current platform frequency is maintained unchanged.

[0157] (13) Frequency rising speed: In one embodiment, the frequency rising speed of the compressor from zero to the frequency of the first platform can be greater than the frequency rising speed between other platforms. Additionally, the frequency rising speed of the compressor from the first platform to the second platform, from the second platform to the third platform, from the third platform to the fourth platform, and from the fourth platform to the fifth platform can be equal.

[0158] ① When the frequency < PLAT_FREQ1_ADD, the frequency rising speed is FREQ_UP_SPD1_ADD, for example, 1 Hz / s.

[0159] ② When PLAT_FREQ2_ADD > frequency ≥ PLAT_FREQ1_ADD, the frequency rising speed is FREQ_UP_SPD2_ADD, for example, 0.5 Hz / s.

[0160] ③ When PLAT_FREQ3_ADD > frequency ≥ PLAT_FREQ2_ADD, the frequency rising speed is FREQ_UP_SPD2_ADD, for example, 0.5 Hz / s.

[0161] ④ When the frequency ≥ PLAT_FREQ3_ADD, the frequency rising speed is FREQ_UP_SPD3_ADD, for example, 0.5 Hz / s.

[0162] ⑤ When the frequency ≥ PLAT_FREQ4_ADD, the frequency rising speed is FREQ_UP_SPD4_ADD, for example, 0.5 Hz / s.

[0163] ⑥ When the frequency ≥ PLAT_FREQ5_ADD, the frequency rising speed is FREQ_UP_SPD5_ADD, for example, 0.5 Hz / s.

[0164] (14) Frequency falling speed: In one embodiment, the frequency falling speed of the compressor when adjusting down from the first platform can be greater than the frequency falling speed between other platforms. Additionally, the frequency falling speed of the compressor when adjusting down from the second platform, from the third platform, from the fourth platform, and from the fifth platform can be equal.

[0165] ① When PLAT_FREQ1_ADD ≥ frequency ≥ CHANG_SPD_FREQ_ADD, for example, 20 Hz, the frequency falling speed is FREQ_DW_SPD1_ADD, for example, 1 Hz / s.

[0166] ②When the frequency <CHANG_SPD_FREQ_ADD, for example, 20 Hz, the frequency decrease rate is FREQ_DW_SPD0_ADD, for example, 0.05 Hz / s.

[0167] ③When PLAT_FREQ2_ADD > frequency ≥ PLAT_FREQ1_ADD, the frequency decrease rate is FREQ_DW_SPD2_ADD, for example, 0.5 Hz / s.

[0168] ④When PLAT_FREQ3_ADD > frequency ≥ PLAT_FREQ2_ADD, the frequency decrease rate is FREQ_DW_SPD2_ADD, for example, 0.5 Hz / s.

[0169] ⑤When the frequency ≥ PLAT_FREQ3_ADD, the frequency decrease rate is FREQ_DW_SPD3_ADD, for example, 0.5 Hz / s.

[0170] ⑥When the frequency ≥ PLAT_FREQ4_ADD, the frequency decrease rate is FREQ_DW_SPD4_ADD, for example, 0.5 Hz / s.

[0171] ⑦When the frequency ≥ PLAT_FREQ5_ADD, the frequency decrease rate is FREQ_DW_SPD5_ADD, for example, 0.5 Hz / s.

[0172] (14) Opening control of the electronic expansion valve during the startup process: In the embodiment of the present application, the difference between the preset frequency value and the adjusted platform frequency can be calculated, then the product value of the difference and the preset magnification is calculated, and finally the sum of the product value and the preset compensation value is calculated, and this sum is used as the target opening of the electronic expansion valve, specifically as follows:

[0173] ①When the ambient temperature T4 < T4_FrqPlat_ADD, for example, 0 °C;

[0174] PLSQD = (FrqPlat1_ADDX - FrqPlat1_ADD1) * a + b1

[0175] ②When the ambient temperature T4 ≥ T4_FrqPlat_ADD, for example, 0 °C:

[0176] PLSQD = (FrqPlat1_ADDX - FrqPlat1_ADD2) * a + b2

[0177] Among them, FrqPlat1_ADDX can be a preset frequency value, a is a preset multiplier, such as 2, and the embodiment of the present application does not make any specific limitations on this; in addition, b1 and b2 are preset compensation values, such as 50 or 150, or can be other values, and the embodiment of the present application does not make any specific limitations on this; in addition, PLSQD needs to be within the allowable range, that is, PLSQD∈[DeltaPDMin, DeltaPDMax].

[0178] Based on the startup control method of the heat pump water heater in each of the above-mentioned embodiments, various embodiments of the controller, heat pump water heater, computer-readable storage medium and computer program product of the present application are respectively proposed below.

[0179] like Fig.13 As shown, Fig.13 300 is a schematic diagram of a controller for executing a startup control method provided by an embodiment of the present application. The controller 300 implemented in the present application includes: a processor 310, a memory 320, and a computer program stored in the memory 320 and executable on the processor 310, wherein: Fig.13 In the figure, a processor 310 and a memory 320 are taken as an example.

[0180] The processor 310 and the memory 320 may be connected via a bus or other means. Fig.13 The example of connecting through bus is taken in the following.

[0181] The memory 320, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 320 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 320 may optionally include a memory 320 remotely arranged relative to the processor 310, and these remote memories 320 may be connected to the controller 300 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0182] Those skilled in the art will understand that Fig.13 The device structure shown in the figure does not constitute a limitation on the controller 300, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0183] exist Fig.13In the controller 300 shown, the processor 310 can be used to call the control program stored in the memory 320, so as to implement the above-mentioned startup control method. Specifically, the non-transient software program and instructions required to implement the startup control method of the above-mentioned embodiment are stored in the memory 320, and when executed by the processor 310, the startup control method of the above-mentioned embodiment is executed.

[0184] It is worth noting that since the controller 300 of the embodiment of the present application can execute the startup control method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the controller 300 of the embodiment of the present application can refer to the specific implementation methods and technical effects of the startup control method of any of the above-mentioned embodiments.

[0185] In addition, an embodiment of the present application further provides a heat pump water heater, which includes the controller of the above embodiment.

[0186] It is worth noting that since the heat pump water heater of the embodiment of the present application includes the controller of the above embodiment, and the controller of the above embodiment can execute the startup control method of any of the above embodiments, the specific implementation manner and technical effects of the heat pump water heater of the embodiment of the present application can refer to the specific implementation manner and technical effects of the startup control method of any of the above embodiments.

[0187] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-described startup control method. Figures 2 to 11 The method steps in .

[0188] It is worth noting that since the computer-readable storage medium of the embodiments of the present application can execute the startup control method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the computer-readable storage medium of the embodiments of the present application can refer to the specific implementation methods and technical effects of the startup control method of any of the above-mentioned embodiments.

[0189] In addition, an embodiment of the present application further provides a computer program product, including a computer program or a computer instruction, the computer program or the computer instruction is stored in a computer-readable storage medium, the processor of the computer device reads the computer program or the computer instruction from the computer-readable storage medium, and the processor executes the computer program or the computer instruction, so that the computer device executes the above-described startup control method. Figures 2 to 11 The method steps in .

[0190] It is worth noting that since the computer program product of the embodiments of the present application can execute the startup control method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the computer program product of the embodiments of the present application can refer to the specific implementation methods and technical effects of the startup control method of any of the above-mentioned embodiments.

[0191] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0192] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A startup control method for a heat pump water heater, characterized in that: The method comprises: In response to the start command, obtaining a target frequency of the compressor; Determine at least one target operating platform according to the target frequency, increase the frequency of the compressor to each of the target operating platforms in sequence, and control the compressor to maintain operation at each of the target operating platforms for a corresponding preset time; When the operation time of the compressor at the last target operation platform reaches a preset time, the operation frequency of the compressor is adjusted to the target frequency.

2. The method according to claim 1, characterized in that The determining at least one target operating platform according to the target frequency includes one of the following: When the target frequency is less than the first platform and the target frequency is not determined by the current ambient temperature and the temperature at the bottom of the water tank, determining the first platform as the target operating platform; When the target frequency is greater than or equal to the first platform, all operating platforms less than or equal to the target frequency are used as the target operating platforms.

3. The method according to claim 2, characterized in that The taking all operating platforms with a frequency less than or equal to the target frequency as the target operating platform includes one of the following: When the target frequency is greater than or equal to the first platform and less than the second platform, determining the first platform as the target operating platform; When the target frequency is greater than or equal to the second platform and less than the third platform, determining the first platform and the second platform as the target operating platforms; When the target frequency is greater than or equal to the third platform and less than the fourth platform, determining the first platform, the second platform and the third platform as the target operating platforms; When the target frequency is greater than or equal to the fourth platform and less than the fifth platform, determining the first platform, the second platform, the third platform and the fourth platform as the target operating platforms; When the target frequency is greater than or equal to the fifth platform, the first platform, the second platform, the third platform, the fourth platform and the fifth platform are determined as the target operating platforms.

4. The method according to claim 2, characterized in that: After responding to the start instruction, the method further includes: During startup of the compressor, when a first frequency limiting signal is received and the target frequency after frequency limiting is less than the first platform, the operation of the compressor to the first platform is cancelled, and the frequency of the compressor is directly increased to the target frequency after frequency limiting.

5. The method according to claim 2, characterized in that: Also includes: In the case where the compressor is running at the target operating platform, when a second frequency limiting signal is received and the target frequency after frequency limiting is less than the current operating platform, the compressor is controlled to exit the current operating platform.

6. The method according to claim 3, characterized in that After responding to the start instruction, the method further includes one of the following: When the heat pump water heater is in the capacity test mode, the compressor is stopped from running on the first platform, the second platform, the third platform, the fourth platform and the fifth platform; When the heat pump water heater is in defrosting mode, the compressor is controlled to operate on the first platform and the second platform in sequence, and the compressor is cancelled from operating on the third platform, the fourth platform and the fifth platform.

7. The method according to claim 2, characterized in that After obtaining the target frequency of the compressor, the method further includes: When the target frequency is less than the first platform and the target frequency is determined by the current ambient temperature and the lower temperature of the water tank, the compressor is cancelled from running to the first platform, and the frequency of the compressor is directly increased to the target frequency after frequency limiting.

8. The method according to claim 2, characterized in that: One operating platform corresponds to one platform frequency and one platform operation duration; the method further includes: Get the current ambient temperature; The platform frequency and platform operation duration of the operating platform are adjusted according to the current ambient temperature.

9. The method according to claim 8, characterized in that The adjusting the platform frequency and platform operation duration of the operating platform according to the current ambient temperature includes one of the following: When the current ambient temperature is lower than a first preset temperature, reducing the platform frequency of the operating platform and extending the platform operation time of the operating platform; When the current ambient temperature is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, the platform frequency and the platform operation time of the operating platform are kept unchanged; When the current ambient temperature is greater than a second preset temperature, the platform frequency of the operating platform is increased, and the platform operation time of the operating platform is shortened.

10. The method according to claim 8, characterized in that The heat pump water heater is provided with an electronic expansion valve; after adjusting the platform frequency and platform operation duration of the operating platform according to the current ambient temperature, the method further includes: Obtaining the platform frequency after adjustment of the operating platform; The opening degree of the electronic expansion valve is controlled according to the adjusted platform frequency.

11. A controller, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the startup control method for a heat pump water heater as claimed in any one of claims 1 to 10 when executing the computer program.

12. A heat pump water heater, characterized in that: Comprising a controller as claimed in claim 11.

13. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the startup control method of the heat pump water heater according to any one of claims 1 to 10.

14. A computer program product comprising a computer program or computer instructions, characterized in that The computer program or the computer instruction is stored in a computer-readable storage medium, and a processor of a computer device reads the computer program or the computer instruction from the computer-readable storage medium. The processor executes the computer program or the computer instruction, so that the computer device executes the startup control method of the heat pump water heater as described in any one of claims 1 to 10.

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