Control method and device of air conditioner water heater, storage medium and electronic equipment

Abstract

The invention discloses a control method and device of an air conditioner water heater, a storage medium and electronic device.According to the control method and device of the air conditioner water heater, the outlet water temperature and the inlet water temperature of a heat exchanger of the air conditioner water heater are detected, the temperature of the environment where the air conditioner water heater is located is detected, and the air conditioner water heater is controlled based on the outlet water temperature, the inlet water temperature and the environment temperature; and determining that the air-conditioning water heater meets the anti-freezing water pump starting condition, and starting the water pump to perform anti-freezing treatment on the air-conditioning water heater. The air conditioner water heater is dynamically controlled to enter the anti-freezing working mode through the inlet and outlet water temperature of the heat exchanger and the environment temperature, the temperature in the water pipe can be effectively increased, the water pipe is prevented from freezing, and therefore the risk that the water pipe is broken is effectively avoided; it can be ensured that the air conditioning system keeps stable operation with the lowest energy consumption, and therefore energy is saved, and operation cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of HVAC technology, and in particular to a control method, device, storage medium and electronic device for an air-conditioning water heater. Background Art

[0002] In low temperature environments, especially in winter, air conditioning water heaters face serious anti-freezing problems. When the ambient temperature drops below freezing, if the water heater air conditioner is shut down or not running for a long time, its own anti-freezing function will fail, which may cause the water pipes and internal equipment to freeze or even be damaged.

[0003] At present, the common practice is to remind users that they need to drain the water in advance when not in use for a long time, or to use the machine's own temperature probe to detect the water temperature and determine whether to start electric heating or other heating methods to prevent freezing. However, in fact, there are always problems where users forget or the determination fails. In order to improve the user's convenience and the safety and reliability of the anti-freeze function, a more comprehensive, effective and low-cost anti-freeze solution for air-conditioning water heaters is needed. Summary of the invention

[0004] The embodiments of the present application provide a control method, device, storage medium and electronic device for an air-conditioning water heater, which can achieve comprehensive, effective and low-cost anti-freezing treatment for the air-conditioning water heater.

[0005] In a first aspect, an embodiment of the present application provides a control method for an air-conditioning water heater, comprising:

[0006] Detect the outlet water temperature and inlet water temperature of the heat exchanger of the air-conditioning water heater, and detect the ambient temperature of the air-conditioning water heater;

[0007] Based on the outlet water temperature, inlet water temperature and ambient temperature, it is determined that the air-conditioning water heater meets the anti-freeze water pump start-up conditions, and the water pump is started to perform anti-freeze treatment on the air-conditioning water heater.

[0008] In some embodiments, the anti-freeze water pump start-up condition includes the water pump first anti-freeze start-up condition and the water pump non-first anti-freeze start-up condition;

[0009] Based on the outlet water temperature, inlet water temperature and ambient temperature, determine that the air-conditioning water heater meets the anti-freeze water pump start-up conditions, and start the water pump to perform anti-freeze treatment on the air-conditioning water heater, including:

[0010] Detect the historical cumulative anti-freeze processing times of the water pump of the air-conditioning water heater entering the anti-freeze processing after the water pump is in the power-on standby state or the power-on shutdown state;

[0011] If the historical cumulative number of anti-freeze processing times is 0, based on the outlet water temperature, inlet water temperature and ambient temperature, check whether the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump; if the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump, start the water pump to perform anti-freeze processing on the air-conditioning water heater;

[0012] or,

[0013] If the historical cumulative number of anti-freeze processing times is greater than 0, the air-conditioning water heater is detected whether it meets the water pump non-first anti-freeze start-up conditions based on the outlet water temperature, inlet water temperature and ambient temperature; if the air-conditioning water heater meets the water pump non-first anti-freeze start-up conditions, the water pump is started to perform anti-freeze processing on the air-conditioning water heater.

[0014] In some embodiments, the first water pump anti-freezing start condition includes a first water pump start condition and a second water pump start condition;

[0015] If the air-conditioning water heater meets the first anti-freeze start condition of the water pump, before starting the water pump to perform anti-freeze treatment on the air-conditioning water heater, the method also includes:

[0016] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0017] If the water system reference water temperature is lower than the first preset water temperature and lasts for the first preset time, it is determined that the air conditioning water heater meets the first water pump start condition;

[0018] If the ambient temperature is lower than the first preset ambient temperature and lasts for a second preset time, and the water system reference water temperature is lower than the second preset water temperature and lasts for a third preset time, it is determined that the air conditioning water heater meets the second water pump start condition.

[0019] In some embodiments, the method further comprises:

[0020] When the water pump is in the starting state, if the air conditioning water heater meets the water pump shut-off condition, the water pump is shut off;

[0021] Among them, the water pump shutdown condition is that the temperature difference between the outlet water temperature and the inlet water temperature is less than or equal to the first preset temperature difference, the water pump operation time is greater than or equal to the first preset operation time, and the water system reference water temperature is greater than or equal to the third preset water temperature and lasts for a fourth preset time.

[0022] In some embodiments, the non-first anti-freeze start condition of the water pump includes a third water pump start condition and a fourth water pump start condition;

[0023] If the air-conditioning water heater meets the non-first anti-freeze start condition of the water pump, before starting the water pump to perform anti-freeze processing on the air-conditioning water heater, the method further includes:

[0024] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0025] If the water system reference water temperature is lower than the fourth preset water temperature and lasts for the fifth preset time, and the time since the last water pump shutdown is greater than the sixth preset time, it is determined that the air conditioning water heater meets the third water pump start condition;

[0026] If the ambient temperature is lower than the second preset ambient temperature and lasts for the seventh preset time, and the water system reference water temperature is lower than the fifth preset water temperature and lasts for the eighth preset time, it is determined that the air conditioning water heater meets the fourth water pump start condition.

[0027] In some embodiments, the method further comprises:

[0028] Get the reference shutdown duration T of the water pump when the water pump is shut down for the nth time n ′, where n∈[1, N], N is a positive integer greater than 1, and when n is 1, T 1 ' is the preset value;

[0029] If after the nth shut-down of the water pump, the duration of the nth shut-down of the water pump meets the reference shut-down duration T of the water pump n ', or the water pump is not started for the first time to prevent freezing when the water pump starts.

[0030] In some implementations, the reference shutdown duration T of the water pump when the water pump is shut down for the nth time is obtained. n ',include:

[0031] Record the duration of the pump shutdown history T for the n-1th time the pump is shut down n-1 ;

[0032] Record the historical circulating water temperature t of the water system when the water pump is shut down for the n-1th time n-1 , determine the historical circulating water temperature t of the water system according to the preset first mapping relationship n-1 The corresponding target first water pump off adjustment time A n-1 , the preset first mapping relationship includes a mapping relationship between the circulating water temperature of the water system and the first water pump shutdown adjustment time;

[0033] Record the temperature difference Δt of the circulating water in the water system between the nth and n-1th start of the water pump n-1 , determine the circulating water temperature difference Δt of the water system according to the preset second mapping relationship n-1 Corresponding target second water pump off adjustment time B n-1 The preset second mapping relationship includes the mapping relationship between the temperature difference of the circulating water temperature of the water system and the second water pump shutdown adjustment time, wherein, when n<3, Δt n-1 is 0;

[0034] The target third water pump shutdown adjustment time C is determined according to the current water pump startup times n and the preset third mapping relationship. n , the preset third mapping relationship includes a mapping relationship between the number of water pump startups and the third water pump shutdown adjustment time;

[0035] Determine the target fourth water pump shutdown adjustment time D according to the current ambient temperature and a preset fourth mapping relationship, wherein the preset fourth mapping relationship records the mapping relationship between the current ambient temperature and the fourth water pump shutdown adjustment time;

[0036] According to the historical shutdown duration T of the pump n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ′.

[0037] In some embodiments, the pump is turned off for a certain period of time according to its historical shutdown duration T. n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ',include:

[0038] The reference shut-off duration of the pump is calculated using the following formula:

[0039] T n ′=T n-1 +A n-1 +B n-1 +C n +D

[0040] In some embodiments, the method further comprises:

[0041] When the water pump is in the starting state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power;

[0042] Among them, the first water pump power adjustment condition is that the reference water temperature of the water system is less than or equal to the sixth preset water temperature and the duration is less than the ninth preset duration; the second water pump power adjustment condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the second preset temperature difference, and the water pump operation time is greater than or equal to the second preset operation time.

[0043] In some embodiments, after controlling the water pump to operate at the maximum output power, the method further includes:

[0044] If the air-conditioning water heater meets the first heating start condition or the second heating start condition, the air-conditioning water heater is controlled to start the electric heating / heating mode;

[0045] Among them, the first heating start condition is that the reference water temperature of the water system is less than the seventh preset water temperature and lasts for the tenth preset time; the second heating start condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the third preset temperature difference, and the water pump running time is greater than or equal to the third preset running time.

[0046] In some embodiments, the method further comprises:

[0047] When the water pump is in the starting state, if the air-conditioning water heater meets the first preset operation mode switching condition, the second preset operation mode switching condition, or the third preset operation mode switching condition, the air-conditioning water heater is switched to the preset operation mode;

[0048] Among them, the first preset operation mode switching condition is that the water system reference water temperature is greater than the eighth preset water temperature and lasts for the eleventh preset time; the second preset operation mode switching condition is that the ambient temperature is greater than the third preset ambient temperature and lasts for the twelfth preset time; the third preset operation mode switching condition is that the outlet water temperature is greater than or equal to the maximum outlet water temperature under the ambient temperature; the preset operation modes include the air conditioner water heater being in the power-on standby state or the power-on shutdown state;

[0049] and / or,

[0050] The method also includes: when the air-conditioning water heater is in a preset operation mode, executing the steps of detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

[0051] In a second aspect, the embodiment of the present application further provides a control device for an air-conditioning water heater, comprising:

[0052] A detection module is used to detect the outlet water temperature and inlet water temperature of the heat exchanger of the air-conditioning water heater, and to detect the ambient temperature of the air-conditioning water heater;

[0053] The anti-freeze processing module is used to determine whether the air-conditioning water heater meets the anti-freeze water pump starting conditions based on the outlet water temperature, the inlet water temperature and the ambient temperature, and start the water pump to perform anti-freeze processing on the air-conditioning water heater.

[0054] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program runs on a computer, the computer executes a control method for an air-conditioning water heater as provided in any embodiment of the present application.

[0055] In a fourth aspect, an embodiment of the present application further provides an electronic device, including a processor and a memory, the memory having a computer program, and the processor calls the computer program to execute a control method for an air-conditioning water heater as provided in any embodiment of the present application.

[0056] The technical solution provided by the embodiment of the present application is to detect the outlet water temperature and inlet water temperature of the heat exchanger of the air-conditioning water heater, and detect the ambient temperature of the air-conditioning water heater. Based on the outlet water temperature, inlet water temperature and ambient temperature, it is determined that the air-conditioning water heater meets the anti-freezing water pump start-up conditions, and the water pump is started to perform anti-freezing treatment on the air-conditioning water heater. Due to the cold weather conditions in winter, if the water pipes in the air-conditioning water heater are affected by low temperature and freeze, it may cause the water pipes to rupture, thereby causing serious problems such as leakage. In the present application, the air-conditioning water heater is dynamically controlled to enter the anti-freezing working mode by the inlet and outlet water temperature of the heat exchanger and the ambient temperature, which can effectively increase the temperature in the water pipes, prevent the water pipes from freezing, and thus avoid the risk of water pipe rupture. And in the present application, the air-conditioning water heater is dynamically controlled to enter the anti-freezing working mode, which can avoid energy waste caused by the freezing of the water pipes. Specifically, in the related art, in a low temperature environment, the air-conditioning system needs to start and stop frequently to deal with the freezing problem, which will consume a lot of energy. In the present application, by dynamically controlling to enter the anti-freezing working mode, it can ensure that the air-conditioning system maintains stable operation with the lowest energy consumption, thereby saving energy and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0058] Figure 1 A first flow chart of a method for controlling an air-conditioning water heater provided in an embodiment of the present application.

[0059] Figure 2 A second flow chart of the control method of the air-conditioning water heater provided in the embodiment of the present application.

[0060] Figure 3 A process example of the control method of the air-conditioning water heater provided in the embodiment of the present application in an actual application scenario.

[0061] Figure 4 A schematic diagram of the structure of a control device for an air-conditioning water heater provided in an embodiment of the present application.

[0062] Figure 5A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0063] Figure 6 A second structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0065] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0066] An air-conditioning water heater is an air-conditioning system that is connected to the indoor fan coil through pipes and uses hot and cold water to cool and heat the room. An air-conditioning water heater, also known as a cold (hot) water unit, is an important equipment in air-conditioning engineering.

[0067] Among them, in the air conditioning water heater, the heat exchanger is mainly responsible for the transfer of heat. Specifically, it can transfer heat from one fluid (such as water) to another fluid (such as air or another water) through heat conduction, convection and radiation, thereby adjusting the indoor temperature. During the cooling process, the heat exchanger absorbs the heat in the room and transfers it to the outside, lowering the indoor temperature; during the heating process, on the contrary, the heat exchanger transfers the heat outside to the room, raising the indoor temperature.

[0068] Among them, the water pump is the core component of the air conditioning water heater circulating water system. It is responsible for pumping water from the outdoor unit (or water source) to the indoor unit, and then transferring heat to the indoor air through the radiator (or absorbing the heat of the indoor air), thereby achieving indoor temperature regulation. Therefore, the existence of the water pump has an important impact on the efficiency and performance of the air conditioning water heater. Specifically, the water pump can provide a stable water flow, ensure the continuity and uniformity of heat transfer, and thus improve the cooling or heating effect of the air conditioner.

[0069] In low-temperature environments, especially in winter, air-conditioning water heaters face serious anti-freezing problems. When the ambient temperature drops below freezing, if the water-cooling air conditioner is shut down or not running for a long time, its own anti-freezing function will fail, which may cause the water pipes and internal equipment to freeze or even be damaged. For example, the water system pipelines will continue to leak heat due to the low-temperature environment, and the water temperature will drop to freezing point and freeze, which will cause the water pipes and heat exchangers to freeze and explode.

[0070] At present, the common practice is to remind users that they need to drain the water in advance when not in use for a long time, or to use the machine's own temperature probe to detect the water temperature and determine whether to start electric heating or other heating methods to prevent freezing. However, in fact, there are always problems where users forget or the determination fails. In order to improve the user's convenience and the safety and reliability of the anti-freeze function, a more comprehensive, effective and low-cost anti-freeze solution for air-conditioning water heaters is needed.

[0071] In order to solve the above problems, the embodiment of the present application provides a control method for an air-conditioning water heater, and the execution subject of the control method for an air-conditioning water heater can be the control device of the air-conditioning water heater provided in the embodiment of the present application, or an electronic device integrating the control device of the air-conditioning water heater, wherein the control device of the air-conditioning water heater can be implemented in hardware or software. Among them, the electronic device is an air-conditioning water heater.

[0072] See also Figure 1 , Figure 1 This is a schematic diagram of a first flow chart of the control method of the air-conditioning water heater provided in the embodiment of the present application. The specific flow chart of the control method of the air-conditioning water heater provided in the embodiment of the present application can be as follows:

[0073] S110, detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

[0074] The outlet water temperature refers to the temperature of the water leaving the heat exchanger after being heated (in heating mode) or cooled (in cooling mode) by the heat exchanger. This temperature reflects the heating or cooling effect of the heat exchanger on the water and is one of the key indicators for evaluating system performance.

[0075] The inlet water temperature refers to the initial temperature of the water entering the heat exchanger. This temperature is very important for understanding the amount of water temperature change that the system needs to handle and calculating parameters such as energy efficiency ratio.

[0076] Among them, the ambient temperature refers to the air temperature of the environment where the air conditioner water heater is located (usually the machine room or outdoors). This parameter helps to understand the impact of the system's external environment on the system's operation, especially when selecting an operating mode (such as heating, cooling or dehumidification) and adjusting the system output.

[0077] For example, when detecting the outlet water temperature of the heat exchanger in the air-conditioning water heater, a temperature sensor such as a thermistor, thermocouple or RTD sensor can be installed at the outlet of the heat exchanger, and the temperature sensor is connected to a data acquisition system or controller through a wire to collect the outlet water temperature in real time.

[0078] For example, when monitoring the water inlet temperature of the heat exchanger in the air-conditioning water heater, a temperature sensor such as a thermistor, thermocouple or RTD sensor can be installed at the water inlet of the heat exchanger, and the temperature sensor can be connected to a data acquisition system or controller through a wire to collect the water inlet temperature in real time.

[0079] For example, when monitoring the ambient temperature of the air-conditioning water heater, one or more ambient temperature sensors can be installed near the air-conditioning water heater (usually in the machine room or around the outdoor unit), and the temperature sensor can also be connected to the data acquisition system or controller through a wire to collect the ambient temperature in real time.

[0080] S120: Based on the water outlet temperature, the water inlet temperature and the ambient temperature, determine that the air-conditioning water heater meets the anti-freezing water pump start-up conditions, and start the water pump to perform anti-freezing treatment on the air-conditioning water heater.

[0081] In this application, based on the three temperature parameters of water outlet temperature, water inlet temperature and ambient temperature, the setting conditions that one or more of the three temperature parameters need to meet when the air-conditioning water heater enters the anti-freeze working mode are designed. It can be understood that the setting conditions include one or more. When the detected values ​​of the three temperature parameters meet the corresponding setting conditions, the system corresponding to the air-conditioning water heater will trigger the anti-freeze protection mechanism, automatically start the water pump to increase water circulation, thereby keeping the water temperature above the freezing point and preventing freezing.

[0082] In specific implementation, the present application is not limited by the execution order of the various steps described. If no conflict occurs, some steps can be performed in other orders or simultaneously.

[0083] As can be seen from the above, the control method of the air-conditioning water heater provided in the embodiment of the present application, by detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater, determines that the air-conditioning water heater meets the anti-freeze water pump start-up conditions based on the outlet water temperature, the inlet water temperature and the ambient temperature, and starts the water pump to perform anti-freeze treatment on the air-conditioning water heater. In the present application, the air-conditioning water heater is dynamically controlled to enter the anti-freeze working mode through the inlet and outlet water temperatures of the heat exchanger and the ambient temperature, which can effectively increase the temperature in the water pipe and prevent the water pipe from freezing, thereby effectively avoiding the risk of water pipe rupture, and the air-conditioning water heater is dynamically controlled to enter the anti-freeze working mode in the present application, which can ensure that the air-conditioning system maintains stable operation with the lowest energy consumption, thereby saving energy and reducing operating costs.

[0084] The method described in the above embodiments is further described in detail below with examples.

[0085] See also Figure 2 , Figure 2 A second flow chart of the control method of the air-conditioning water heater provided in the embodiment of the present application. The method comprises:

[0086] S210, detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

[0087] The content of step S210 is consistent with that of the above step S110 and will not be repeated here.

[0088] S220, detecting the historical cumulative number of times the water pump of the air-conditioning water heater enters the anti-freeze process after being in the power-on standby state or the power-on shutdown state.

[0089] Among them, power-on refers to the state where the air conditioner water heater is connected to a power source and starts to obtain power supply.

[0090] Among them, the historical cumulative anti-freeze processing times refers to the cumulative number of times the water pump enters the anti-freeze processing after the air-conditioning water heater is in the power-on standby state or the power-on shutdown state. After the air-conditioning water heater switches to the power-on standby state or the power-on shutdown state, the historical cumulative anti-freeze processing times are cleared.

[0091] In one example, when detecting the historical cumulative number of anti-freeze processing times of the water pump entering the anti-freeze processing after the air-conditioning water heater is in the power-on standby state or the power-on shutdown state, the working operation log of the water pump system can be obtained, and the historical cumulative number of anti-freeze processing times can be determined through this working operation log.

[0092] S230. If the historical cumulative number of anti-freeze processing times is 0, based on the water outlet temperature, water inlet temperature and ambient temperature, check whether the air-conditioning water heater meets the water pump's first anti-freeze start-up conditions; if the air-conditioning water heater meets the water pump's first anti-freeze start-up conditions, start the water pump to perform anti-freeze processing on the air-conditioning water heater.

[0093] Among them, the water pump first anti-freeze start condition is the condition that needs to be met when the water pump is started for the first time.

[0094] In this embodiment, if the historical cumulative number of anti-freezing processing times of the water pump is 0, it means that the water pump has not been started. At this time, the starting condition that the water pump needs to meet is the first starting condition.

[0095] In this embodiment, if the air-conditioning water heater meets the first start-up condition, the water pump is started to increase water circulation, thereby keeping the water temperature above the freezing point to prevent freezing, that is, the air-conditioning water heater is anti-freezing treated.

[0096] In the embodiment of the present application, the air-conditioning water heater meets the conditions for starting the water pump based on the outlet water temperature and inlet water temperature of the air-conditioning water heater heat exchanger and the ambient temperature of the air-conditioning water heater. Specifically:

[0097] The first water pump anti-freezing start condition includes the first water pump start condition and the second water pump start condition. Before step S230 "if the air-conditioning water heater meets the first water pump anti-freezing start condition, start the water pump to perform anti-freezing treatment on the air-conditioning water heater", the following steps S2301 to S2303 may be included:

[0098] S2301, determining a reference water temperature of a water system in an air-conditioning water heater according to an outlet water temperature and an inlet water temperature;

[0099] The water system reference water temperature refers to the water temperature standard or range used for evaluating, designing or optimizing the performance of the air conditioning water heater water system. In this application, the water system reference water temperature is determined by the outlet water temperature and the inlet water temperature.

[0100] In one example, the water system reference water temperature can take the smaller temperature value between the water temperature and the inlet water temperature as the water system reference water temperature, that is, the water system reference water temperature = min (Twout, Twin), where Twout is the outlet water temperature and Twin is the inlet water temperature.

[0101] In another example, the water system reference water temperature may be an average value of the water temperature and the inlet water temperature as the water system reference water temperature.

[0102] S2302: If the water system reference water temperature is lower than the first preset water temperature and lasts for the first preset time, it is determined that the air conditioning water heater meets the first water pump start condition;

[0103] S2303: If the ambient temperature is lower than the first preset ambient temperature and lasts for a second preset time, and the water system reference water temperature is lower than the second preset water temperature and lasts for a third preset time, it is determined that the air conditioning water heater meets the second water pump start condition.

[0104] It can be understood that when the air-conditioning water heater meets the first water pump starting condition or meets the second water pump starting condition, the water pump is started to perform anti-freezing treatment on the air-conditioning water heater.

[0105] Among them, the first preset water temperature, the first preset time, the first preset ambient temperature, the second preset time, the second preset water temperature, and the third preset time are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0106] Exemplarily, the first preset water temperature can be set to 2°C, the first preset time can be set to 10s, the first preset ambient temperature can be set to -3°C, the second preset time can be set to 1 minute, the second preset water temperature can be set to 8°C and the third preset time can be set to 10s.

[0107] S240. If the historical cumulative number of anti-freeze processing times is greater than 0, based on the water outlet temperature, water inlet temperature and ambient temperature, detect whether the air-conditioning water heater meets the water pump non-first anti-freeze start-up conditions; if the air-conditioning water heater meets the water pump non-first anti-freeze start-up conditions, start the water pump to perform anti-freeze processing on the air-conditioning water heater.

[0108] Among them, the non-first anti-freeze start condition of the water pump is a condition that needs to be met when the water pump is started again after it has been started once or multiple times.

[0109] In this embodiment, the fact that the historical cumulative number of anti-freeze processing times of the water pump is greater than 0 indicates that the water pump has been started once or more times, that is, when the water pump is started for the first time and then shut down and then started again, the starting condition that the water pump needs to meet at this time is the non-first start condition.

[0110] In some embodiments, the non-first anti-freeze start condition of the water pump includes a third water pump start condition and a fourth water pump start condition. Before step S240 "if the air-conditioning water heater meets the non-first anti-freeze start condition of the water pump, start the water pump to perform anti-freeze treatment on the air-conditioning water heater", steps S2401 to S2402 may also be included:

[0111] S2401: If the water system reference water temperature is lower than the fourth preset water temperature and lasts for the fifth preset time, and the time since the last water pump shutdown is greater than the sixth preset time, it is determined that the air conditioning water heater meets the third water pump start condition;

[0112] S2402: If the ambient temperature is lower than the second preset ambient temperature and lasts for a seventh preset time, and the water system reference water temperature is lower than the fifth preset water temperature and lasts for an eighth preset time, it is determined that the air conditioning water heater meets the fourth water pump start-up condition.

[0113] It can be understood that when the air-conditioning water heater meets the third water pump starting condition, or meets the fourth water pump starting condition, the water pump is started to perform anti-freezing treatment on the air-conditioning water heater.

[0114] Among them, the fourth preset water temperature, the fifth preset time, the sixth preset time, the second preset ambient temperature, the seventh preset time, the fifth preset water temperature, and the eighth preset time are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0115] Exemplarily, the fourth preset water temperature can be set to 2°C, the fifth preset time can be set to 10s, the sixth preset time can be set to 15 minutes, the second preset ambient temperature can be set to -3°C, the seventh preset time can be set to 1 minute, the fifth preset water temperature can be set to 8°C and the eighth preset time can be set to 10s.

[0116] In some implementations, the control method of the air-conditioning water heater provided in the embodiment of the present application further includes S250:

[0117] S250, when the water pump is in the start-up state, if the air conditioning water heater meets the water pump shut-off condition, shut down the water pump;

[0118] Among them, the water pump shutdown condition is that the temperature difference between the outlet water temperature and the inlet water temperature is less than or equal to the first preset temperature difference, the water pump operation time is greater than or equal to the first preset operation time, and the water system reference water temperature is greater than or equal to the third preset water temperature and lasts for a fourth preset time.

[0119] Among them, the first preset temperature difference, the first preset operating time, the third preset water temperature, and the fourth preset duration are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0120] Exemplarily, the first preset temperature difference may be set to 1° C., the first preset operating time may be set to 2 minutes, the third preset water temperature may be set to 8° C., and the fourth preset time may be set to 10 seconds.

[0121] In some implementations, the control method of the air-conditioning water heater provided in the embodiment of the present application further includes S260 to S270:

[0122] S260, obtaining the reference shutdown duration T′ of the water pump when the water pump is shut down for the nth time n , where n∈[1, N], N is a positive integer greater than 1, and when n is 1, T 1 ' is the preset value;

[0123] When n is 1, T 1 ' is a preset value, for example, the preset value may be 50 minutes, and the setting of the preset value may be determined by those skilled in the art based on the empirical value summarized according to the actual scenario.

[0124] It should be noted that T′ n Refers to the reference value, that is, each time the water pump is turned off, the duration of the water pump being turned off is recorded. If the duration of the water pump being turned off meets this reference value, the water pump is started to enter the anti-freeze process. In this application, if the air-conditioning water heater meets the non-first anti-freeze start-up condition of the water pump, the water pump will also be started to enter the anti-freeze process. Therefore, there is a situation where the duration of the water pump being turned off does not reach this reference value, but the air-conditioning water heater meets the non-first start-up condition. At this time, the duration of the water pump being turned off is shorter than the reference value. Here, the actual duration of the water pump being turned off after each water pump is turned off is recorded as T. n The actual shutdown duration of the water pump is also referred to as the historical shutdown duration of the water pump below.

[0125] S270: If after the water pump is shut down for the nth time, the duration of the water pump shutting down for the nth time satisfies the water pump reference shut-down duration T′ n , or if the water pump is not started for the first time to prevent freezing, the water pump will be turned on.

[0126] Specifically, step S260 "obtains the reference shutdown duration T' of the water pump when the water pump is shut down for the nth time n "include:

[0127] S2601, record the historical shutdown duration T of the water pump when the water pump is shut down for the n-1th time n-1 ;

[0128] Among them, T n-1 That is, the actual duration of the pump being shut down when the pump is shut down for the n-1th time.

[0129] S2602, record the historical circulating water temperature t of the water system when the water pump is shut down for the n-1th time n-1 , determine the historical circulating water temperature t of the water system according to the preset first mapping relationship n-1 The corresponding target first water pump off adjustment time A n-1 , the preset first mapping relationship includes a mapping relationship between the circulating water temperature of the water system and the first water pump shutdown adjustment time;

[0130] The preset first mapping relationship is an empirical value summarized by technicians in this field according to actual scenarios.

[0131] Exemplarily, the preset first mapping relationship may be as shown in the following Table 1:

[0132] Circulating water temperature (degrees Celsius) ≥14 12 10 8 6 5 First water pump shutdown adjustment time (minutes) 30 15 5 0 -10 -20

[0133] Table 1

[0134] S2603, record the temperature difference Δt of the circulating water in the water system between the nth and n-1th start of the water pump n-1 , determine the circulating water temperature difference Δt of the water system according to the preset second mapping relationship n-1 Corresponding target second water pump off adjustment time B n-1 The preset second mapping relationship includes the mapping relationship between the temperature difference of the circulating water temperature of the water system and the second water pump shutdown adjustment time, wherein, when n<3, Δt n-1 is 0;

[0135] The preset second mapping relationship is an empirical value summarized by technicians in this field according to actual scenarios.

[0136] Exemplarily, the preset second mapping relationship may be as shown in the following Table 2:

[0137] Water temperature difference (Celsius) ≤1 2 3 4 5 6 Second water pump shutdown adjustment time (minutes) 30 15 5 0 -10 -20

[0138] Table 2

[0139] S2604: Determine the target third water pump shutdown adjustment time C according to the current water pump startup times n and the preset third mapping relationship. n , the preset third mapping relationship includes a mapping relationship between the number of water pump startups and the third water pump shutdown adjustment time;

[0140] The preset third mapping relationship is an empirical value summarized by technicians in this field according to actual scenarios.

[0141] Exemplarily, the preset third mapping relationship may be as shown in the following Table 3:

[0142] Number of pump starts n 1 2 3 4 5 6 The third water pump shut-off adjustment time (minutes) 0 0 -2 -2 -4 -4

[0143] Table 3

[0144] S2605, determining a target fourth water pump shut-down adjustment time D according to the current ambient temperature and a preset fourth mapping relationship, wherein the preset fourth mapping relationship records a mapping relationship between the current ambient temperature and the fourth water pump shut-down adjustment time;

[0145] Among them, the preset fourth mapping relationship is an empirical value summarized by technical personnel in this field according to actual scenarios.

[0146] Exemplarily, the preset fourth mapping relationship may be as shown in the following Table 3:

[0147] Ambient temperature (Celsius) ≥-3 ≥-8 ≥-12 ≥-18 ≥-22 ≥-25 Fourth water pump shutdown adjustment time (minutes) 60 35 0 -5 -10 -20

[0148] Table 4

[0149] S2606, based on the historical shutdown duration of the water pump T n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ′.

[0150] Specifically, the reference shutdown duration of the water pump is calculated by the following formula:

[0151] T n ′=T n-1 +A n-1 +B n-1 +C n +D

[0152] In some implementations, the control method of the air-conditioning water heater provided in the embodiment of the present application further includes step S280:

[0153] S280: When the water pump is in the started state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power.

[0154] Among them, the first water pump power adjustment condition is that the reference water temperature of the water system is less than or equal to the sixth preset water temperature and the duration is less than the ninth preset duration; the second water pump power adjustment condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the second preset temperature difference, and the water pump operation time is greater than or equal to the second preset operation time.

[0155] Among them, the sixth preset water temperature, the ninth preset time, the second preset temperature difference, and the second preset operating time are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0156] Exemplarily, the sixth preset water temperature may be set to 4° C., the ninth preset time period may be set to 10 minutes, the second preset temperature difference may be set to 1.5° C., and the second preset operating time may be set to 5 minutes.

[0157] In some embodiments, after the step S280 of "controlling the water pump to operate at the maximum output power", the method further includes the step S290:

[0158] S290: If the air-conditioning water heater meets the first heating start condition or the second heating start condition, control the air-conditioning water heater to start the electric heating / heating mode;

[0159] Among them, the first heating start condition is that the reference water temperature of the water system is less than the seventh preset water temperature and lasts for the tenth preset time; the second heating start condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the third preset temperature difference, and the water pump running time is greater than or equal to the third preset running time.

[0160] Among them, the seventh preset water temperature, the tenth preset time, the third preset temperature difference, and the third preset operating time are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0161] Exemplarily, the seventh preset water temperature may be set to 4° C., the tenth preset time may be set to 30 seconds, the third preset temperature difference may be set to 1.5° C., and the third preset operating time may be set to 5 minutes.

[0162] In some embodiments, the control method of the air-conditioning water heater proposed in the embodiment of the present application also includes: when the water pump is in the started state, if the air-conditioning water heater meets the first preset operating mode switching condition or the second preset operating mode switching condition or the third preset operating mode switching condition, the air-conditioning water heater is switched to the preset operating mode.

[0163] Among them, the first preset operating mode switching condition is that the water system reference water temperature is greater than the eighth preset water temperature and lasts for the eleventh preset time period; the second preset operating mode switching condition is that the ambient temperature is greater than the third preset ambient temperature and lasts for the twelfth preset time period; the third preset operating mode switching condition is that the outlet water temperature is greater than or equal to the maximum outlet water temperature under the ambient temperature; the preset operating modes include the air conditioning water heater being in the power-on standby state or the power-on shutdown state.

[0164] Among them, the eighth preset water temperature, the eleventh preset time, the third preset ambient temperature, the twelfth preset time, and the maximum water outlet temperature under ambient temperature are all empirical values ​​summarized by technical personnel in this field based on actual scenarios.

[0165] It should be noted that the heat exchanger of the air-conditioning water heater (usually the condenser or evaporator, depending on whether it is in cooling or heating mode) has an upper limit on the outlet water temperature that can be produced at a specific ambient temperature. This upper limit is called the maximum outlet water temperature. This maximum outlet water temperature is not fixed, it will change with the change of ambient temperature. The maximum outlet water temperature value is also an empirical value summarized by technicians in this field based on actual scenarios.

[0166] Exemplarily, the eighth preset water temperature can be set to 15°C, the eleventh preset time can be set to 60s, the third preset ambient temperature can be set to 5°C, the twelfth preset time can be set to 1 minute, and the maximum water outlet temperature under the ambient temperature can be set to TstopH. TstopH is determined according to the maximum water outlet temperature corresponding to the ambient temperature of 5°C, specifically based on empirical values, and will not be repeated here.

[0167] In this embodiment, the control method of the air-conditioning water heater proposed in the embodiment of the present application also includes: when the air-conditioning water heater is in the preset operating mode, executing the steps of detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater, that is, executing step S210 to start a new round of anti-freeze treatment cycle for the air-conditioning water heater.

[0168] As can be seen from the above, the control method of the air-conditioning water heater proposed in the embodiment of the present application detects the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detects the ambient temperature of the air-conditioning water heater, detects the historical cumulative anti-freeze processing times of the water pump entering the anti-freeze processing after the air-conditioning water heater is in the power-on standby state or the power-on shutdown state, and if the historical cumulative anti-freeze processing times are 0, then based on the outlet water temperature, the inlet water temperature and the ambient temperature, detect whether the air-conditioning water heater meets the first anti-freeze starting condition of the water pump; if the air-conditioning water heater meets the first anti-freeze starting condition of the water pump, start the water pump to perform anti-freeze processing on the air-conditioning water heater; if the historical cumulative anti-freeze processing times are greater than 0, then based on the outlet water temperature, the inlet water temperature and the ambient temperature, detect whether the air-conditioning water heater meets the non-first anti-freeze starting condition of the water pump; if the air-conditioning water heater meets the non-first anti-freeze starting condition of the water pump, start the water pump to perform anti-freeze processing on the air-conditioning water heater. Due to the cold weather conditions in winter, if the water pipes in the air-conditioning water heater are affected by the low temperature and freeze, it may cause the water pipes to rupture, thereby causing serious problems such as water leakage. In the present application, the air conditioning water heater is dynamically controlled to enter the anti-freeze working mode through the inlet and outlet water temperatures of the heat exchanger and the ambient temperature, which can effectively increase the temperature in the water pipes to prevent the water pipes from freezing, thereby avoiding the risk of water pipe rupture. In addition, in the present application, the air conditioning water heater is dynamically controlled to enter the anti-freeze working mode, which can avoid energy waste caused by freezing of water pipes. Specifically, in the related art, in a low temperature environment, the air conditioning system needs to start and stop frequently to deal with the freezing problem, which consumes a lot of energy. In the present application, by dynamically controlling to enter the anti-freeze working mode, it can ensure that the air conditioning system maintains stable operation with the lowest energy consumption, thereby saving energy and reducing operating costs.

[0169] In order to more clearly explain the control method of the air-conditioning water heater provided in this application, the following provides a process example of applying the control method in a specific application scenario. Please refer to Figure 3 , Figure 3A process example of the control method of the air-conditioning water heater provided in the embodiment of the present application in an actual application scenario.

[0170] S1. The air conditioner water heater is in the power-on standby state or the power-on shutdown state.

[0171] In the case of step S1, if the air-conditioning water heater meets the first anti-freezing start condition of the water pump, go to step S2.

[0172] S2, the first water pump operation.

[0173] In the case of step S2, if the air-conditioning water heater meets the water pump shut-off condition, go to step S3.

[0174] S3, the first water pump is turned off.

[0175] In the case of step S3, if the air-conditioning water heater meets the non-first anti-freeze start-up condition for the water pump, go to step S4.

[0176] S4, the second water pump runs.

[0177] In the case of step S4, if the air-conditioning water heater meets the water pump shut-off condition, go to step S5.

[0178] S5, the second water pump is turned off.

[0179] In the case of step S5, if the air-conditioning water heater meets the non-first anti-freezing start condition of the water pump, the water pump is started, and so on, that is, go to step S6.

[0180] S6. The water pump runs for the nth time.

[0181] In the case of step S6, if the air-conditioning water heater meets the water pump shut-off condition, the water pump is shut off, that is, the process goes to step S7.

[0182] S7, the nth water pump is turned off.

[0183] It can be understood that the air conditioning water heater cyclically executes the above-mentioned water pump starting or shutting down steps based on the water pump first anti-freeze starting condition, the water pump non-first anti-freeze starting condition and the water pump shutting down condition.

[0184] S8, the air conditioning water heater controls the water pump to run at maximum output power.

[0185] When the water pump is in the started state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power, that is, go to step S8.

[0186] S9, the air conditioning water heater starts operating in electric heating / heating mode.

[0187] If the air-conditioning water heater meets the first heating start condition or the second heating start condition, the air-conditioning water heater is controlled to start the electric heating / heating mode, that is, go to step S9.

[0188] Furthermore, when the water pump is in the started state, if the air-conditioning water heater meets the first preset operation mode switching condition, the second preset operation mode switching condition, or the third preset operation mode switching condition, the process goes to step S1.

[0189] In one embodiment, a control device for an air-conditioning water heater is also provided. Figure 4 , Figure 4 The structure diagram of the control device 300 of the air-conditioning water heater provided in the embodiment of the present application is shown in FIG. The control device 300 of the air-conditioning water heater is applied to an electronic device, and the electronic device is an air-conditioning water heater. The control device 300 of the air-conditioning water heater includes a detection module 301 and an anti-freezing processing module 302, as follows:

[0190] The detection module 301 is used to detect the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and to detect the ambient temperature of the air-conditioning water heater;

[0191] The anti-freezing processing module 302 is used to determine whether the air-conditioning water heater meets the anti-freezing water pump starting conditions based on the outlet water temperature, the inlet water temperature and the ambient temperature, and start the water pump to perform anti-freezing processing on the air-conditioning water heater.

[0192] In some embodiments, the anti-freeze water pump start-up condition includes the first anti-freeze water pump start-up condition and the non-first anti-freeze water pump start-up condition; the anti-freeze processing module 302 is used to:

[0193] Detect the historical cumulative anti-freeze processing times of the water pump of the air-conditioning water heater entering the anti-freeze processing after the water pump is in the power-on standby state or the power-on shutdown state;

[0194] If the historical cumulative number of anti-freeze processing times is 0, based on the outlet water temperature, inlet water temperature and ambient temperature, check whether the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump; if the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump, start the water pump to perform anti-freeze processing on the air-conditioning water heater;

[0195] or,

[0196] If the historical cumulative number of anti-freeze processing times is greater than 0, the air-conditioning water heater is detected whether it meets the water pump non-first anti-freeze start-up conditions based on the outlet water temperature, inlet water temperature and ambient temperature; if the air-conditioning water heater meets the water pump non-first anti-freeze start-up conditions, the water pump is started to perform anti-freeze processing on the air-conditioning water heater.

[0197] In some embodiments, the first water pump anti-freezing start condition includes a first water pump start condition and a second water pump start condition; the anti-freezing processing module 302 is used to:

[0198] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0199] If the water system reference water temperature is lower than the first preset water temperature and lasts for the first preset time, it is determined that the air conditioning water heater meets the first water pump start condition;

[0200] If the ambient temperature is lower than the first preset ambient temperature and lasts for a second preset time, and the water system reference water temperature is lower than the second preset water temperature and lasts for a third preset time, it is determined that the air conditioning water heater meets the second water pump start condition.

[0201] In some embodiments, the anti-freeze processing module 302 is used to:

[0202] When the water pump is in the starting state, if the air conditioning water heater meets the water pump shut-off condition, the water pump is shut off;

[0203] Among them, the water pump shutdown condition is that the temperature difference between the outlet water temperature and the inlet water temperature is less than or equal to the first preset temperature difference, the water pump operation time is greater than or equal to the first preset operation time, and the water system reference water temperature is greater than or equal to the third preset water temperature and lasts for a fourth preset time.

[0204] In some embodiments, the anti-freeze processing module 302 is used to:

[0205] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0206] If the water system reference water temperature is lower than the fourth preset water temperature and lasts for the fifth preset time, and the time since the last water pump shutdown is greater than the sixth preset time, it is determined that the air conditioning water heater meets the third water pump start condition;

[0207] If the ambient temperature is lower than the second preset ambient temperature and lasts for the seventh preset time, and the water system reference water temperature is lower than the fifth preset water temperature and lasts for the eighth preset time, it is determined that the air conditioning water heater meets the fourth water pump start condition.

[0208] In some embodiments, the anti-freeze processing module 302 is used to:

[0209] Get the reference shutdown duration T of the water pump when the water pump is shut down for the nth time n ′, where n∈[1, N], N is a positive integer greater than 1, and when n is 1, T 1 ' is the preset value;

[0210] If after the nth shut-down of the water pump, the duration of the nth shut-down of the water pump meets the reference shut-down duration T of the water pumpn ', or the water pump is not started for the first time to prevent freezing when the water pump starts.

[0211] In some embodiments, the anti-freeze processing module 302 is used to:

[0212] Record the duration of the pump shutdown history T for the n-1th time the pump is shut down n-1 ;

[0213] Record the historical circulating water temperature t of the water system when the water pump is shut down for the n-1th time n-1 , determine the historical circulating water temperature t of the water system according to the preset first mapping relationship n-1 The corresponding target first water pump off adjustment time A n-1 , the preset first mapping relationship includes a mapping relationship between the circulating water temperature of the water system and the first water pump shutdown adjustment time;

[0214] Record the temperature difference Δt of the circulating water in the water system between the nth and n-1th start of the water pump n-1 , determine the circulating water temperature difference Δt of the water system according to the preset second mapping relationship n-1 Corresponding target second water pump off adjustment time B n-1 The preset second mapping relationship includes the mapping relationship between the temperature difference of the circulating water temperature of the water system and the second water pump shutdown adjustment time, wherein, when n<3, Δt n-1 is 0;

[0215] The target third water pump shutdown adjustment time C is determined according to the current water pump startup times n and the preset third mapping relationship. n , the preset third mapping relationship includes a mapping relationship between the number of water pump startups and the third water pump shutdown adjustment time;

[0216] Determine the target fourth water pump shutdown adjustment time D according to the current ambient temperature and a preset fourth mapping relationship, wherein the preset fourth mapping relationship records the mapping relationship between the current ambient temperature and the fourth water pump shutdown adjustment time;

[0217] According to the historical shutdown duration T of the pump n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ′.

[0218] In some embodiments, the anti-freeze processing module 302 is used to:

[0219] The reference shut-off duration of the pump is calculated using the following formula:

[0220] T n ′=T n-1 +A n-1 +B n-1 +C n +D

[0221] In some embodiments, the anti-freeze processing module 302 is used to:

[0222] When the water pump is in the starting state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power;

[0223] Among them, the first water pump power adjustment condition is that the reference water temperature of the water system is less than or equal to the sixth preset water temperature and the duration is less than the ninth preset duration; the second water pump power adjustment condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the second preset temperature difference, and the water pump operation time is greater than or equal to the second preset operation time.

[0224] In some embodiments, the anti-freeze processing module 302 is used to:

[0225] If the air-conditioning water heater meets the first heating start condition or the second heating start condition, the air-conditioning water heater is controlled to start the electric heating / heating mode;

[0226] Among them, the first heating start condition is that the reference water temperature of the water system is less than the seventh preset water temperature and lasts for the tenth preset time; the second heating start condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the third preset temperature difference, and the water pump running time is greater than or equal to the third preset running time.

[0227] In some embodiments, the anti-freeze processing module 302 is used to:

[0228] When the water pump is in the starting state, if the air-conditioning water heater meets the first preset operation mode switching condition, the second preset operation mode switching condition, or the third preset operation mode switching condition, the air-conditioning water heater is switched to the preset operation mode;

[0229] Among them, the first preset operation mode switching condition is that the water system reference water temperature is greater than the eighth preset water temperature and lasts for the eleventh preset time; the second preset operation mode switching condition is that the ambient temperature is greater than the third preset ambient temperature and lasts for the twelfth preset time; the third preset operation mode switching condition is that the outlet water temperature is greater than or equal to the maximum outlet water temperature under the ambient temperature; the preset operation modes include the air conditioner water heater being in the power-on standby state or the power-on shutdown state;

[0230] and / or,

[0231] The method also includes: when the air-conditioning water heater is in a preset operation mode, executing the steps of detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

[0232] It should be noted that the control device of the air-conditioning water heater provided in the embodiment of the present application belongs to the same concept as the control method of the air-conditioning water heater in the above embodiment. Any method provided in the control method embodiment of the air-conditioning water heater can be implemented through the control device of the air-conditioning water heater. The specific implementation process is detailed in the control method embodiment of the air-conditioning water heater, which will not be repeated here.

[0233] In addition, in order to better implement the control method of the air-conditioning water heater in the embodiment of the present application, based on the control method of the air-conditioning water heater, the present application also provides an electronic device, which can be an air-conditioning water heater. Figure 5 , Figure 5 The first structural diagram of the electronic device provided in the embodiment of the present application is as follows: The electronic device 400 includes a processor 401 and a memory 402. The processor 401 is electrically connected to the memory 402.

[0234] The processor 401 is the control center of the electronic device 400. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or calling the computer program stored in the memory 402, and calling the data stored in the memory 402, it executes various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Among them, the processor 401 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0235] The memory 402 can be used to store computer programs and data. The computer program stored in the memory 402 contains instructions that can be executed in the processor. The computer program can form various functional modules. The processor 401 executes various functional applications and data processing by calling the computer program stored in the memory 402. Among them, the memory 402 can mainly include a program storage area and a data storage area. The program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the electronic device 400 (such as audio data, video data, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart MediaCard, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0236] In this embodiment, the processor 401 in the electronic device 400 loads instructions corresponding to the processes of one or more computer programs into the memory 402 according to the following steps, and the processor 401 runs the computer programs stored in the memory 402 to implement various functions:

[0237] Detect the outlet water temperature and inlet water temperature of the heat exchanger of the air-conditioning water heater, and detect the ambient temperature of the air-conditioning water heater;

[0238] Based on the outlet water temperature, inlet water temperature and ambient temperature, it is determined that the air-conditioning water heater meets the anti-freeze water pump start-up conditions, and the water pump is started to perform anti-freeze treatment on the air-conditioning water heater.

[0239] In some embodiments, see Figure 6 , Figure 6 A second structural diagram of an electronic device provided in an embodiment of the present application. The electronic device 400 further includes: a radio frequency circuit 403, a display screen 404, a control circuit 405, an input unit 406, an audio circuit 407, a sensor 408, and a power supply 409. The processor 401 is electrically connected to the radio frequency circuit 403, the display screen 404, the control circuit 405, the input unit 406, the audio circuit 407, the sensor 408, and the power supply 409, respectively.

[0240] The radio frequency circuit 403 is used to send and receive radio frequency signals to communicate with network devices or other electronic devices through wireless communication.

[0241] The display screen 404 may be used to display information input by a user or information provided to a user and various graphical user interfaces of the electronic device. These graphical user interfaces may be composed of images, texts, icons, videos and any combination thereof.

[0242] The control circuit 405 is electrically connected to the display screen 404 and is used to control the display screen 404 to display information.

[0243] The input unit 406 can be used to receive input numbers, character information or user feature information (such as fingerprints), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. The input unit 406 can include a fingerprint recognition module.

[0244] The audio circuit 407 can provide an audio interface between the user and the electronic device through a speaker and a microphone. The audio circuit 407 includes a microphone. The microphone is electrically connected to the processor 401. The microphone is used to receive voice information input by the user.

[0245] The sensor 408 is used to collect external environment information. The sensor 408 may include one or more sensors such as an environment brightness sensor, an acceleration sensor, and a gyroscope.

[0246] The power supply 409 is used to supply power to various components of the electronic device 400. In some embodiments, the power supply 409 may be logically connected to the processor 401 through a power management system, so that the power management system can manage charging, discharging, power consumption, and other functions.

[0247] Although not shown in the figure, the electronic device 400 may also include a camera, a Bluetooth module, etc., which will not be described in detail here.

[0248] In this embodiment, the processor 401 in the electronic device 400 loads instructions corresponding to the processes of one or more computer programs into the memory 402 according to the following steps, and the processor 401 runs the computer programs stored in the memory 402 to implement various functions:

[0249] Detect the outlet water temperature and inlet water temperature of the heat exchanger of the air-conditioning water heater, and detect the ambient temperature of the air-conditioning water heater;

[0250] Based on the outlet water temperature, inlet water temperature and ambient temperature, it is determined that the air-conditioning water heater meets the anti-freeze water pump start-up conditions, and the water pump is started to perform anti-freeze treatment on the air-conditioning water heater.

[0251] In some embodiments, the anti-freezing water pump start condition includes the first anti-freezing start condition of the water pump and the non-first anti-freezing start condition of the water pump; when the processor 401 determines that the air-conditioning water heater meets the anti-freezing water pump start condition based on the outlet water temperature, the inlet water temperature and the ambient temperature, and starts the water pump to perform anti-freezing processing on the air-conditioning water heater, the processor 401 may execute:

[0252] Detect the historical cumulative anti-freeze processing times of the water pump of the air-conditioning water heater entering the anti-freeze processing after the water pump is in the power-on standby state or the power-on shutdown state;

[0253] If the historical cumulative number of anti-freeze processing times is 0, based on the outlet water temperature, inlet water temperature and ambient temperature, check whether the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump; if the air-conditioning water heater meets the first anti-freeze start-up conditions for the water pump, start the water pump to perform anti-freeze processing on the air-conditioning water heater;

[0254] or,

[0255] If the historical cumulative number of anti-freeze processing times is greater than 0, the air-conditioning water heater is detected whether it meets the water pump non-first anti-freeze start-up conditions based on the outlet water temperature, inlet water temperature and ambient temperature; if the air-conditioning water heater meets the water pump non-first anti-freeze start-up conditions, the water pump is started to perform anti-freeze processing on the air-conditioning water heater.

[0256] In some embodiments, the first water pump anti-freezing start condition includes a first water pump start condition and a second water pump start condition; before the processor 401 starts the water pump to perform anti-freezing processing on the air-conditioning water heater if the air-conditioning water heater meets the first water pump anti-freezing start condition, it may also execute:

[0257] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0258] If the water system reference water temperature is lower than the first preset water temperature and lasts for the first preset time, it is determined that the air conditioning water heater meets the first water pump start condition;

[0259] If the ambient temperature is lower than the first preset ambient temperature and lasts for a second preset time, and the water system reference water temperature is lower than the second preset water temperature and lasts for a third preset time, it is determined that the air conditioning water heater meets the second water pump start condition.

[0260] In some implementations, the processor 401 may further execute:

[0261] When the water pump is in the starting state, if the air conditioning water heater meets the water pump shut-off condition, the water pump is shut off;

[0262] Among them, the water pump shutdown condition is that the temperature difference between the outlet water temperature and the inlet water temperature is less than or equal to the first preset temperature difference, the water pump operation time is greater than or equal to the first preset operation time, and the water system reference water temperature is greater than or equal to the third preset water temperature and lasts for a fourth preset time.

[0263] In some embodiments, the non-first anti-freeze start condition of the water pump includes a third water pump start condition and a fourth water pump start condition. If the air-conditioning water heater meets the non-first anti-freeze start condition of the water pump, the processor 401 may further execute the following steps before starting the water pump to perform anti-freeze processing on the air-conditioning water heater:

[0264] Determine the reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature;

[0265] If the water system reference water temperature is lower than the fourth preset water temperature and lasts for the fifth preset time, and the time since the last water pump shutdown is greater than the sixth preset time, it is determined that the air conditioning water heater meets the third water pump start condition;

[0266] If the ambient temperature is lower than the second preset ambient temperature and lasts for the seventh preset time, and the water system reference water temperature is lower than the fifth preset water temperature and lasts for the eighth preset time, it is determined that the air conditioning water heater meets the fourth water pump start condition.

[0267] In some implementations, the processor 401 may further execute:

[0268] Get the reference shutdown duration T' of the water pump when the water pump is shut down for the nth time n , where n∈[1, N], N is a positive integer greater than 1, and when n is 1, T 1 ' is the preset value;

[0269] If after the nth shut-down of the water pump, the duration of the nth shut-down of the water pump meets the reference shut-down duration T′ of the water pump n , or if the water pump is not started for the first time to prevent freezing, the water pump will be turned on.

[0270] In some embodiments, the processor 401 executes the process of obtaining a reference water pump shutdown duration T′ when the water pump is shut down for the nth time. n When you execute:

[0271] Record the duration of the pump shutdown history T for the n-1th time the pump is shut down n-1 ;

[0272] Record the historical circulating water temperature t of the water system when the water pump is shut down for the n-1th time n-1 , determine the historical circulating water temperature t of the water system according to the preset first mapping relationship n-1 The corresponding target first water pump off adjustment time A n-1, the preset first mapping relationship includes a mapping relationship between the circulating water temperature of the water system and the first water pump shutdown adjustment time;

[0273] Record the temperature difference Δt of the circulating water in the water system between the nth and n-1th start of the water pump n-1 , determine the circulating water temperature difference Δt of the water system according to the preset second mapping relationship n-1 Corresponding target second water pump off adjustment time B n-1 The preset second mapping relationship includes the mapping relationship between the temperature difference of the circulating water temperature of the water system and the second water pump shutdown adjustment time, wherein, when n<3, Δt n-1 is 0;

[0274] The target third water pump shutdown adjustment time C is determined according to the current water pump startup times n and the preset third mapping relationship. n , the preset third mapping relationship includes a mapping relationship between the number of water pump startups and the third water pump shutdown adjustment time;

[0275] Determine the target fourth water pump shutdown adjustment time D according to the current ambient temperature and a preset fourth mapping relationship, wherein the preset fourth mapping relationship records the mapping relationship between the current ambient temperature and the fourth water pump shutdown adjustment time;

[0276] According to the historical shutdown duration T of the pump n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T' n .

[0277] In some embodiments, the processor 401 executes the process according to the historical shutdown duration T of the water pump. n-1 、Target first water pump shutdown adjustment time A n-1 、Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n And the target fourth water pump off adjustment time D, determine the water pump reference off duration T' n When you execute:

[0278] The reference shut-off duration of the pump is calculated using the following formula:

[0279] T′ n =T n-1 +A n-1 +B n-1 +C n +D

[0280] In some implementations, the processor 401 may further execute:

[0281] When the water pump is in the starting state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power;

[0282] Among them, the first water pump power adjustment condition is that the reference water temperature of the water system is less than or equal to the sixth preset water temperature and the duration is less than the ninth preset duration; the second water pump power adjustment condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the second preset temperature difference, and the water pump operation time is greater than or equal to the second preset operation time.

[0283] In some implementations, after executing the control of the water pump to operate at the maximum output power, the processor 401 may further execute:

[0284] If the air-conditioning water heater meets the first heating start condition or the second heating start condition, the air-conditioning water heater is controlled to start the electric heating / heating mode;

[0285] Among them, the first heating start condition is that the reference water temperature of the water system is less than the seventh preset water temperature and lasts for the tenth preset time; the second heating start condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the third preset temperature difference, and the water pump running time is greater than or equal to the third preset running time.

[0286] In some implementations, the processor 401 may further execute:

[0287] When the water pump is in the starting state, if the air-conditioning water heater meets the first preset operation mode switching condition, the second preset operation mode switching condition, or the third preset operation mode switching condition, the air-conditioning water heater is switched to the preset operation mode;

[0288] Among them, the first preset operation mode switching condition is that the water system reference water temperature is greater than the eighth preset water temperature and lasts for the eleventh preset time; the second preset operation mode switching condition is that the ambient temperature is greater than the third preset ambient temperature and lasts for the twelfth preset time; the third preset operation mode switching condition is that the outlet water temperature is greater than or equal to the maximum outlet water temperature under the ambient temperature; the preset operation modes include the air conditioner water heater being in the power-on standby state or the power-on shutdown state;

[0289] and / or,

[0290] The method also includes: when the air-conditioning water heater is in a preset operation mode, executing the steps of detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

[0291] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on a computer, the computer executes the control method of the air-conditioning water heater described in any of the above embodiments.

[0292] It should be noted that, a person skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the storage medium can include but is not limited to: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0293] In addition, the terms "first", "second", and "third" in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but some embodiments also include steps or modules that are not listed, or some embodiments also include other steps or modules inherent to these processes, methods, products, or devices.

[0294] The control method, device, storage medium and electronic device of the air-conditioning water heater provided in the embodiment of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application; at the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A control method for an air-conditioning water heater, characterized in that: include: Detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater; Based on the water outlet temperature, the water inlet temperature and the ambient temperature, it is determined that the air-conditioning water heater meets the anti-freezing water pump start-up condition, and the water pump is started to perform anti-freezing treatment on the air-conditioning water heater.

2. The method according to claim 1, characterized in that The anti-freezing water pump starting conditions include the first anti-freezing starting conditions for the water pump and the non-first anti-freezing starting conditions for the water pump; The determining, based on the outlet water temperature, the inlet water temperature and the ambient temperature, that the air-conditioning water heater meets the anti-freezing water pump start-up condition, and starting the water pump to perform anti-freezing processing on the air-conditioning water heater, comprises: Detecting the historical cumulative number of times the water pump enters the anti-freeze process after the air-conditioning water heater is in a power-on standby state or a power-on shutdown state; If the historical cumulative number of anti-freezing treatments is 0, based on the water outlet temperature, the water inlet temperature and the ambient temperature, it is detected whether the air-conditioning water heater meets the first anti-freezing start condition of the water pump; if the air-conditioning water heater meets the first anti-freezing start condition of the water pump, the water pump is started to perform anti-freezing treatment on the air-conditioning water heater; or, If the historical cumulative number of anti-freeze treatments is greater than 0, based on the water outlet temperature, the water inlet temperature and the ambient temperature, it is detected whether the air-conditioning water heater meets the non-first anti-freeze start-up conditions for the water pump; if the air-conditioning water heater meets the non-first anti-freeze start-up conditions for the water pump, the water pump is started to perform anti-freeze treatment on the air-conditioning water heater.

3. The method according to claim 2, characterized in that The water pump first anti-freezing start condition includes a first water pump start condition and a second water pump start condition; If the air-conditioning water heater meets the first anti-freezing start condition of the water pump, before starting the water pump to perform anti-freezing treatment on the air-conditioning water heater, the method further includes: Determine a reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature; If the water system reference water temperature is lower than the first preset water temperature and lasts for a first preset time, it is determined that the air-conditioning water heater meets the first water pump start-up condition; If the ambient temperature is lower than the first preset ambient temperature and lasts for a second preset time, and the water system reference water temperature is lower than the second preset water temperature and lasts for a third preset time, it is determined that the air conditioning water heater meets the second water pump start-up condition.

4. The method according to claim 2, characterized in that: The method further comprises: When the water pump is in the started state, if the air-conditioning water heater meets the water pump shut-off condition, shut down the water pump; Among them, the water pump shut-down condition is that the temperature difference between the water outlet temperature and the water inlet temperature is less than or equal to a first preset temperature difference, the running time of the water pump is greater than or equal to the first preset running time, and the water system reference water temperature is greater than or equal to a third preset water temperature and lasts for a fourth preset time.

5. The method according to claim 2, characterized in that: The non-first anti-freezing start condition of the water pump includes a third water pump start condition and a fourth water pump start condition; Before the water pump is started to perform anti-freeze processing on the air-conditioning water heater if the air-conditioning water heater meets the non-first anti-freeze start condition of the water pump, the method further includes: Determine a reference water temperature of the water system in the air-conditioning water heater according to the outlet water temperature and the inlet water temperature; If the water system reference water temperature is lower than the fourth preset water temperature and lasts for a fifth preset time, and the time since the last water pump shutdown is greater than a sixth preset time, it is determined that the air conditioning water heater meets the third water pump start condition; If the ambient temperature is lower than the second preset ambient temperature and lasts for a seventh preset time, and the water system reference water temperature is lower than the fifth preset water temperature and lasts for an eighth preset time, it is determined that the air conditioning water heater meets the fourth water pump start-up condition.

6. The method according to claim 2, characterized in that The method further comprises: Get the reference shutdown duration T of the water pump when the water pump is shut down for the nth time n ′, where n∈[1, N], N is a positive integer greater than 1, and when n is 1, T1′ is a preset value; If after the water pump is turned off for the nth time, the duration of the water pump turning off for the nth time satisfies the water pump reference turning off duration T n ', or if the water pump is not started for the first time to prevent freezing, the water pump is started.

7. The method according to claim 6, characterized in that The reference shutdown duration T of the water pump when the water pump is shut down for the nth time is obtained. n ',include: Record the duration of the pump shutdown history T for the n-1th time the pump is shut down n-1 ; Record the historical circulating water temperature t of the water system when the water pump is shut down for the n-1th time n-1 , determine the historical circulating water temperature t of the water system according to the preset first mapping relationship n-1 The corresponding target first water pump off adjustment time A n-1 , the preset first mapping relationship includes a mapping relationship between the circulating water temperature of the water system and the first water pump shutdown adjustment time; Record the temperature difference Δt of the circulating water in the water system between the nth and n-1th start of the water pump n-1 , determine the circulating water temperature difference Δt of the water system according to the preset second mapping relationship n-1 Corresponding target second water pump off adjustment time B n-1 The preset second mapping relationship includes the mapping relationship between the temperature difference of the circulating water temperature of the water system and the second water pump shutdown adjustment time, wherein, when n<3, Δt n-1 is 0; The target third water pump shutdown adjustment time C is determined according to the current water pump startup times n and the preset third mapping relationship. n , the preset third mapping relationship includes a mapping relationship between the number of water pump startups and the third water pump shutdown adjustment time; Determine a target fourth water pump shutdown adjustment time D according to the current ambient temperature and a preset fourth mapping relationship, wherein the preset fourth mapping relationship records a mapping relationship between the current ambient temperature and the fourth water pump shutdown adjustment time; According to the historical shutdown duration T of the water pump n-1 、Target first water pump shutdown adjustment time A n-1 , Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n and the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ′.

8. The method according to claim 7, characterized in that The duration T of the water pump shutdown history n-1 、Target first water pump shutdown adjustment time A n-1 , Target second water pump shutdown adjustment time B n-1 , Target third water pump shutdown adjustment time C n and the target fourth water pump off adjustment time D, determine the water pump reference off duration T n ',include: The reference shutdown duration of the water pump is calculated by the following formula: T n ′=T n-1 +A n-1 +B n-1 +C n +D。 9. The method according to any one of claims 1 to 8, characterized in that: The method further comprises: When the water pump is in the starting state, if the air-conditioning water heater meets the first water pump power adjustment condition or the second water pump power adjustment condition, the water pump is controlled to operate at the maximum output power; Among them, the first water pump power adjustment condition is that the reference water temperature of the water system is less than or equal to the sixth preset water temperature and the duration is less than the ninth preset duration; the second water pump power adjustment condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the second preset temperature difference, and the water pump operation time is greater than or equal to the second preset operation time.

10. The method according to claim 9, characterized in that After controlling the water pump to operate at the maximum output power, the method further includes: If the air-conditioning water heater meets the first heating start condition or the second heating start condition, the air-conditioning water heater is controlled to start the electric heating / heating mode; Among them, the first heating start condition is that the reference water temperature of the water system is less than the seventh preset water temperature and lasts for the tenth preset time; the second heating start condition is that the temperature difference between the outlet water temperature and the inlet water temperature is greater than or equal to the third preset temperature difference, and the water pump running time is greater than or equal to the third preset running time.

11. The method according to claim 10, characterized in that The method further comprises: When the water pump is in the starting state, if the air-conditioning water heater meets the first preset operation mode switching condition, the second preset operation mode switching condition, or the third preset operation mode switching condition, the air-conditioning water heater is switched to the preset operation mode; Among them, the first preset operation mode switching condition is that the water system reference water temperature is greater than the eighth preset water temperature and lasts for the eleventh preset time; the second preset operation mode switching condition is that the ambient temperature is greater than the third preset ambient temperature and lasts for the twelfth preset time; the third preset operation mode switching condition is that the outlet water temperature is greater than or equal to the maximum outlet water temperature under the ambient temperature; the preset operation modes include that the air conditioner water heater is in the power-on standby state or the power-on shutdown state; and / or, The method further includes: when the air-conditioning water heater is in the preset operation mode, executing the steps of detecting the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and detecting the ambient temperature of the air-conditioning water heater.

12. A control device for an air-conditioning water heater, characterized in that: include: A detection module, used to detect the outlet water temperature and the inlet water temperature of the heat exchanger of the air-conditioning water heater, and to detect the ambient temperature of the air-conditioning water heater; The anti-freezing processing module is used to determine whether the air-conditioning water heater meets the anti-freezing water pump starting condition based on the outlet water temperature, the inlet water temperature and the ambient temperature, and start the water pump to perform anti-freezing processing on the air-conditioning water heater.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed on a computer, the computer is enabled to execute the control method of the air-conditioning water heater according to any one of claims 1 to 11.

14. An electronic device comprising a processor and a memory, wherein the memory stores a computer program, characterized in that: The processor is used to execute the control method of the air-conditioning water heater according to any one of claims 1 to 11 by calling the computer program.

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