A method and device for heating and controlling instantaneous water storage for air conditioning and water heater

Abstract

The present invention provides an air-conditioning refrigeration and water heater instant water storage heating control method, including: S1. Air-conditioning refrigeration control step: refrigerant passes through a first valve passage through a main unit heat exchanger for condensation, and then evaporates through an air-conditioning evaporator to form an air-conditioning refrigeration circuit, wherein the main unit heat exchanger is a condenser; S2. Water heater heating control step: refrigerant passes through a second valve passage through a hot water heat exchanger for condensation, and then evaporates through a main unit heat exchanger to form a water heater heating circuit; including steps S21 and S22, wherein the main unit heat exchanger is an evaporator, and the hot water heat exchanger includes a water tank shell and tube heat exchanger and an external water supply shell connected to the water tank shell and tube heat exchanger, and the water tank shell and tube heat exchanger is also provided with an internal water supply shell; the present invention gives full play to the advantages of instant water heaters and storage water heaters, combines the instantaneous and storage types to achieve a major breakthrough, and has great economic value and use value.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning refrigeration and water heater heating, and in particular to an air conditioning refrigeration and water heater instant hot water storage heating and control method and device. Background Art

[0002] The development of water heaters in China spans over 50 years. From the first generation of gas water heaters, to the second generation of electric water heaters, to the third generation of solar water heaters, to the fourth generation of air-energy water heaters, the market share of the first, second, and fourth generations of water heaters was approximately 41%, 39%, 7%, and 3%, respectively. Clearly, the market share of each of these four generations of water heaters has decreased with each passing year, a phenomenon that is inconsistent with the rapid advancements in science, technology, and the socio-economic landscape. Among these, air-energy water heaters once held a niche due to their high energy consumption. However, over the years, their high cost, limited user base, long winter wait times, insufficient hot water supply, large storage tanks requiring significant space, the high temperature at which water is stored, the tendency for bacteria to grow, and the need for manual drainage have all remained unaddressed, resulting in the lowest market share.

[0003] People's expectations for water heaters are: safe and hygienic, fast and convenient, cost-effective and durable, intelligently controlled, multi-purpose, high-capacity, suitable for serving an unlimited number of people, cost-effective, compact and easy to install, and free from various installation restrictions. While each generation of water heaters has its advantages, it's difficult to achieve perfection.

[0004] The advantages of the first generation of gas water heaters are: sanitation, convenience, no restrictions on the number of users, small size and easy installation; the disadvantages are: poor safety, high cost of use, and the inconvenience of needing to change gas.

[0005] The advantages of the second-generation electric water heater are: relatively safe and cost-effective, reducing the trouble of changing gas, and being small and easy to install. The disadvantages are: poor safety, high cost of use, poor hot water hygiene, the hot water supply is limited by the number of users, and long waiting times.

[0006] The advantages of third-generation solar water heaters are: they provide free hot water when the sun is shining; their disadvantages are: high water temperatures can cause injuries, long pipes consume a lot of water, the amount of hot water is limited by the number of users, and there are long waiting times. They are also unhygienic and require frequent drainage, are large and take up space, and are vulnerable to natural disasters such as lightning strikes, hail, and typhoons.

[0007] The advantages of fourth-generation air-energy water heaters are safety, high energy efficiency, and cost savings. However, their disadvantages include low energy efficiency due to high-temperature heating, the need to drain hot water, high bacterial counts, and undrinkable water. Their head-mounted design cannot meet the requirements for hot water supply, leading to long wait times. High-temperature insulation consumes a lot of power, resulting in a short service life. They are bulky and require professional installation, taking up space.

[0008] Water heaters are categorized as either instantaneous or storage types. Existing water heaters consistently have numerous shortcomings in addressing users' hot water needs. Especially when multiple people are using hot water continuously, traditional water heaters either rely on ultra-high-power heating methods (such as gas water heaters and instant electric water heaters) or on lower-power, longer-term heating methods (such as storage electric water heaters and air-energy water heaters). These methods share a common characteristic: they fail to integrate user demand for hot water with the inherent characteristics of the supply system to create a unified solution.

[0009] Prior to the fourth-generation air-energy water heater, there were air-conditioning water heaters. Traditional air-conditioning water heaters utilize a compressor, hot water heat exchanger, condenser, and evaporator in series. Due to significant annual temperature fluctuations, the various heat exchangers operate intermittently, causing system refrigerant levels to fluctuate, and pressure to fluctuate. Existing trigeneration systems, which rely on larger storage tanks to balance refrigerant, have limited success and increase high-pressure bypass, reducing energy efficiency. Variable-frequency trigeneration systems, which rely on adjusting the speed to achieve refrigerant balance, also have limited success and can easily damage the compressor, a key component. Summary of the Invention

[0010] In response to the deficiencies of the above-mentioned prior art, the present invention provides an air conditioning refrigeration and water heater instant water storage heating and control method and device. This application solves the characteristics of users' demand for hot water, such as the heat collection method, water mixing method, heating mode, system structure and control, and other aspects are improved. The advantage of the heat pump energy efficiency being a variable is brought into play. The instant heating type is used when high energy efficiency is high, and the instant heating water storage type is used when low energy efficiency is low. The low-temperature and high-efficiency technology is effectively used to solve the current problems caused by high temperature and low efficiency.

[0011] The technical solution adopted by the present invention to solve the above problems is:

[0012] The present invention provides an air conditioning refrigeration and water heater instant hot water storage and heating control device, comprising a compressor, a four-way valve, a host heat exchanger, an air conditioning evaporator and a hot water heat exchanger, wherein the hot water heat exchanger comprises a water tank casing heat exchanger and an external water supply casing;

[0013] The compressor is connected to the host heat exchanger and the air conditioning evaporator in sequence through the first valve passage of the four-way valve to form an air conditioning refrigeration circuit;

[0014] The compressor is connected to the hot water heat exchanger and the main unit heat exchanger in sequence through the second valve passage of the four-way valve to form a water heater heating circuit;

[0015] Cold water enters the water tank through the flow stabilizing pipe and enters the bottom of the water tank, then enters the water tank through the internal water supply sleeve, and then is connected to the hot water outlet of the water tank through the connecting pipe. The hot water outlet is then connected to the external water supply sleeve, and finally connected to the water flow switch, and then to the user.

[0016] The water tank shell and tube heat exchanger includes a water tank, and also includes a heat collecting coil for heating higher temperature hot water located above the water tank inner tank and a uniform heating coil for heating lower temperature hot water located below the water tank inner tank, the circular tube diameter of the heat collecting coil is smaller than the circular tube diameter of the uniform heating coil; the upper end of the heat collecting coil is a refrigerant input port, which is connected to the refrigerant output port of the inner water supply shell, the lower end of the heat collecting coil is a refrigerant output port, which is connected to the refrigerant input port of the uniform heating coil, the refrigerant output port at the bottom end of the uniform heating coil is connected to the connecting copper pipe of the water tank, and then connected to the main heat exchanger, the inner water supply shell is set inside or outside the disk from the top of the heat collecting coil to the bottom end of the uniform heating coil, the bottom end of the inner water supply shell is the refrigerant input port, and is connected to the refrigerant output port of the outer water supply shell, one end of the inner water supply shell is at the top end of the water tank inner tank, and is used for hot water Water is inletted from the top, and the other end of the inner water supply sleeve is at the bottom end of the water tank inner tank, and is provided with a lower water inlet. Cold water enters from the bottom end of the water tank and flows out from the top end of the water tank. The refrigerant enters from the top end of the heat collecting coil at the upper end of the water tank and is output through the bottom end of the uniform heating coil at the bottom end of the water tank. The water flow direction is opposite to the refrigerant flow direction, so as to form convection heating. Hot water is output through the hot water connecting pipe. The diameter of the lower water inlet at the bottom end of the inner water supply sleeve is not larger than the top end of the inner water supply sleeve. The diameter of the upper water inlet is , an external water supply sleeve for conveying refrigerant and heating water supply is arranged outside the water tank sleeve heat exchanger, one end of the external water supply sleeve is connected to the four-way valve, which is the refrigerant input end and the hot water output end, and the hot water outlet of the external water supply sleeve is also connected to a thermoelectric heating device, the other end of the external water supply sleeve is the refrigerant output end connected to the refrigerant input port of the internal water supply sleeve, and the hot water input port of the external water supply sleeve is connected to the hot water supply port of the water tank.

[0017] Furthermore, the four interfaces of the four-way valve include a first interface, a second interface, a third interface and a fourth interface;

[0018] The first valve passage is: the first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the third interface, the third interface is connected to the refrigerant inlet of the host heat exchanger, the refrigerant outlet of the host heat exchanger is connected to the refrigerant inlet of the air-conditioning evaporator, the refrigerant outlet of the air-conditioning evaporator is connected to the second interface, the second interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a first throttle valve and a first stop valve are connected between the air-conditioning evaporator and the host heat exchanger; a first check valve and a second stop valve are connected between the refrigerant outlet of the air-conditioning evaporator and the second interface of the four-way valve.

[0019] Furthermore, the second valve passage is: the first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the second interface, the second interface is connected to the refrigerant inlet of the hot water heating heat exchanger, the refrigerant outlet of the water tank shell and tube heat exchanger is connected to the refrigerant inlet of the main heat exchanger, the refrigerant outlet of the main heat exchanger is connected to the third interface, the third interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a third stop valve and an external water supply shell are connected between the second interface and the refrigerant inlet of the water tank shell and tube heat exchanger; a second check valve, a second throttle valve and a fourth stop valve are connected between the refrigerant outlet of the water tank shell and tube heat exchanger and the refrigerant inlet of the main heat exchanger.

[0020] Furthermore, the air conditioning refrigeration and water heater instant hot water storage and heating control device according to claim 5 is characterized in that: when cold water is introduced, the cold water inlet of the water tank is connected to a negative pressure tee, one end of the negative pressure tee is connected to a check valve with a pressure relief function, the other end of the negative pressure tee is connected to a bypass tee, one end of the bypass tee is connected to a bypass solenoid valve, and the other end is connected to a return water tee, one end of the return water tee is connected to a return water check valve, and the other end of the return water tee is connected to the cold water inlet, supplying When hot water is flowing, cold water enters the water tank, and hot water flows through the upper and lower water inlets of the inner water supply sleeve, and then is connected to the hot water outlet of the water tank through a connecting pipe. The hot water outlet is connected to the input end of the outer water supply sleeve through a connecting pipe, and the hot water output end of the outer water supply sleeve is connected to a water pump. The other end of the water pump is connected to a thermoelectric heating device, and the other end of the thermoelectric heating device is connected to a water flow tee. One end of the water flow tee is connected to a bypass solenoid valve, and the other end of the water flow tee is connected to a water flow switch. The water flow switch is connected to the user for water use, and return water is connected to a return water check valve.

[0021] Furthermore, a controller is included, which is used to control the start and stop of the compressor, the path switching water pump of the four-way valve, that is, the thermoelectric heating and the opening and closing of the solenoid valve. The controller is also connected to an ambient temperature probe, a water flow switch and a water tank temperature probe. The control process includes:

[0022] (1) Hot water storage start:

[0023] When the instant hot water storage type heats hot water, when the water temperature in the water tank is lower than the set temperature and the threshold, the controller controls the compressor to work. When the user uses hot water, the water flow switch is turned on, and the controller controls the compressor to work to complete instant heating.

[0024] (2) Heating pressure balance:

[0025] Balancing process: before the compressor is started or shut down, the controller controls the four-way valve to work, and the refrigerant passes through the first and third interfaces of the four-way valve, the refrigerant with higher pressure in the first interface is depressurized by the heat exchanger of the host with lower pressure, the second and fourth interfaces of the four-way valve are connected, and the water tank shell and pipe heat exchanger with higher refrigerant pressure releases pressure to the compressor air storage tank to complete the balancing process. After the pressure is balanced, the controller controls the four-way valve to disconnect, the compressor is turned on, and the opening of the electronic expansion valve is always maintained at the optimal state, so that the temperature rises quickly to achieve the purpose of instant heating;

[0026] (3) Temperature control:

[0027] The instantaneous water storage type water supply method is to heat the water tank temperature with an instantaneous heat exchanger or electric heating to heat the water. The water tank can be filled with cold water, warm water or hot water. The adjustment range is wide. In order to facilitate control and energy saving and reduce the tediousness of adjustment, the hot water temperature of the water tank is controlled by the set temperature and the ambient temperature. The set temperature is automatically adjusted as the ambient temperature changes.

[0028] (4) Backwater control:

[0029] The instant storage air energy water heater controls the return water pump through the water flow switch and the controller. When return water is needed, the return water pump is installed and the water pump pressurization return water time is set according to the length of the return water pipe to complete the return water; when the user needs water, the water flow switch is turned on and the controller controls the return water pump to work. After the return water is completed, the water pump stops working. The second return water is during the period when the water flow switch is not turned on. The return water interruption time can be set to the time it takes for hot water to become warm water in the return water pipe, and the return water is started again;

[0030] (5) Instant electric heating:

[0031] In summer, the energy efficiency is high, the water tank is filled with cold water or warm water, and it is heated immediately after it is turned on. Only the heat pump needs to heat it to meet the needs of hot showers. In winter, the energy efficiency is low, the water tank is filled with warm water or hot water, and the hot water temperature is the water tank temperature plus the instant heat exchanger temperature. When the ambient temperature or the water tank temperature is lower than the adjustable 15℃, the water flow switch is turned on, and the controller first controls the compressor to work, and then controls the instant electric heating to work. The instant electric heating can also complete the return water with the heating solenoid valve, and can also complete high-temperature sterilization and temperature-differential heating with the return water pump;

[0032] (6) Heating mode:

[0033] The energy efficiency of the air-conditioning instant hot water storage water heater changes with the change of the water tank temperature. The higher the water temperature, the lower the energy efficiency, and vice versa. Take full advantage of the low temperature and high efficiency of the air-conditioning instant hot water storage water heater. Use the air-conditioning instant hot water storage water heater for heating at low water temperature, and use the instant electric heating or electromagnetic energy with constant calorific value to heat the hot water at higher water temperature.

[0034] (7) Temperature separation heating:

[0035] In cold seasons, the temperature difference is large and the hot water consumption varies greatly. The water tank temperature needs to be adjusted to ensure hot water supply. When the hot water temperature is lower than the adjustable 45℃, it is heated by a single air-conditioning instantaneous storage water heater. When the medium temperature is adjustable at 45-55℃, the air-conditioning instantaneous storage water heater and instantaneous electric heating work together to complete the work. When the high temperature is adjustable at 55-75℃, it is completed by a single instantaneous electric heating.

[0036] (8) High temperature sterilization:

[0037] Because cold water enters the water tank from the lower end and hot water flows out from the higher end, sewage is deposited and water nutrient is formed. In addition, the water temperature is relatively low, which is suitable for bacterial reproduction. Regular sterilization is required. When the water temperature is lower than the adjustable 55℃, it is heated by the air-conditioning instantaneous storage water heater. When it is higher than or equal to the adjustable 55℃, the water pump is started, the bypass solenoid valve is opened, and the instantaneous electric heating is started to form a circulating heating device to an adjustable 75℃ for high-temperature sterilization.

[0038] (9) Priority procedures:

[0039] When the water tank temperature is higher than the set temperature, in order to protect the equipment and save energy, when it is 5℃ higher than the set temperature, the cooling or water flow switch will not switch to hot water when it is turned on. When the water tank temperature is lower than or equal to the set temperature, the cooling will switch to hot water or start the equipment to heat hot water when the water flow switch is turned on.

[0040] A method for controlling air conditioning refrigeration and water heater instantaneous storage water heating, comprising: S1. an air conditioning refrigeration control step: refrigerant passes through a first valve path, is condensed by a main unit heat exchanger, and is evaporated by an air conditioning evaporator, thereby forming an air conditioning refrigeration circuit, wherein the main unit heat exchanger is a condenser;

[0041] S2. Water heater heating control step: refrigerant passes through a second valve path, condenses through the hot water heat exchanger, and evaporates through the main unit heat exchanger, forming a water heater heating circuit; comprising steps S21 and S22, wherein the main unit heat exchanger is an evaporator, and the hot water heat exchanger includes a water tank shell and tube heat exchanger and an external water supply shell connected to the water tank shell and tube heat exchanger, and the water tank shell and tube heat exchanger is also provided with an internal water supply shell;

[0042] S21. Water heater storage water heating control step: When the water temperature in the water heater tank is lower than the set temperature threshold, the controller controls the compressor to operate, and the refrigerant passes through the second valve path through the water tank shell and tube heat exchanger to condense and evaporate through the main unit heat exchanger to form a water heater storage water heating circuit;

[0043] S22. Control steps for instantaneous water storage heating of water heater: When water is used, the water flow switch is turned on, and the controller controls the operation of the compressor, which is heated through the water tank casing heat exchanger, and then heated and heated through the water supply casing, and then heated and heated through the instantaneous electric heating device. The refrigerant passes through the second valve path, condenses through the water tank casing heat exchanger and the water supply casing, and evaporates through the main heat exchanger, forming an instantaneous heating circuit for the water heater.

[0044] Furthermore, in step S2, the water tank shell and tube heat exchanger includes a water tank, and also includes a heat collecting coil for heating higher temperature hot water located above the water tank inner tank and a uniform heating coil for heating lower temperature hot water located below the water tank inner tank, which are vertically arranged in the water tank for fluorine water circulation. The disk diameter of the heat collecting coil is smaller than the disk diameter of the uniform heating coil; the upper end of the heat collecting coil is a refrigerant input port, which is connected to the refrigerant output port of the inner water supply shell, the lower end of the heat collecting coil is a refrigerant output port, which is connected to the refrigerant input port of the uniform heating coil, the refrigerant output port at the bottom end of the uniform heating coil is connected to the connecting copper pipe of the water tank, and then connected to the main heat exchanger, the inner water supply shell is arranged inside or outside the disk from the top of the heat collecting coil to the bottom end of the uniform heating coil, the bottom end of the inner water supply shell is a refrigerant input port, and is connected to the refrigerant output port of the outer water supply shell, and one end of the inner water supply shell is at the top of the water tank inner tank, And used for the upper water inlet of hot water, the other end of the inner water supply sleeve is at the bottom end of the water tank inner tank, and is provided with a lower water inlet, cold water enters from the bottom end of the water tank and flows out from the top end of the water tank, the refrigerant enters from the top end of the heat collecting coil at the upper end of the water tank, and is output through the bottom end of the uniform heating coil at the bottom end of the water tank, the water flow direction is opposite to the refrigerant flow direction, so as to form convection heating, and hot water is output through the hot water connecting pipe, and the diameter of the lower water inlet at the bottom end of the inner water supply sleeve is not larger than that of the inner water supply sleeve The diameter of the upper water inlet at the top of the tube, an external water supply sleeve for conveying refrigerant and heating water during water supply is arranged outside the water tank sleeve heat exchanger, one end of the external water supply sleeve is connected to the four-way valve, which is the refrigerant input end and the hot water output end, and the hot water outlet of the external water supply sleeve is also connected to a thermoelectric heating device, the other end of the external water supply sleeve is the refrigerant output end connected to the refrigerant input port of the internal water supply sleeve, and the hot water input port of the external water supply sleeve is connected to the hot water supply port of the water tank.

[0045] Furthermore, the water heater heating process is that the uniform heating coil can heat the hot water alone, or the uniform heating coil and one or more of the heat collecting coil, inner water supply sleeve, outer water supply sleeve, i.e., thermoelectric heating device, heat the hot water simultaneously.

[0046] Furthermore, the water tank includes an inner tank, an insulation layer and an outer shell, the insulation layer is arranged between the inner tank and the outer shell, the outer water supply sleeve is arranged outside the inner tank, and the inner water supply sleeve is arranged inside the inner tank. The S21 heating process is static heating, the water tank is vertically erected, and the inlet temperature of the refrigerant at the top of the heat collecting coil at the top of the water tank is much higher than the temperature of the refrigerant outlet of the uniform heating coil at the bottom of the water tank. According to the principle of cold sinking and heat rising in the water tank, the temperature difference of the water temperature in the water tank inner tank is increased. The S22 heating process is flow heating, cold water enters from the water inlet at the bottom of the water tank, and hot water flows out from the water outlet at the high end of the water tank. The refrigerant enters from the high temperature of the water tank and flows out from the low temperature of the water tank, forming convection heat exchange.

[0047] The air conditioning refrigeration and water heater instant hot water storage heating and control method and device provided by the present invention achieve the following beneficial effects:

[0048] 1. The instant water storage water heater of the present invention is different from the traditional air-conditioning water heater. The hot water heat exchanger and evaporator are first connected in parallel, and then in series with the compressor and condenser. The hot water heat exchanger and evaporator can work separately. When not working, they are like low-pressure gas storage tanks. There is no intermittent operation with more or less refrigerant, which completely solves the refrigerant balance problem. The water heater will also be integrated with the air conditioner.

[0049] 2. This invention fully leverages the advantages of both instantaneous and storage water heaters. Industry-recognized data from air-energy water heater test chambers indicates an energy efficiency of 2.0 at a water tank temperature of 50-55°C, 4.0 at 40-45°C, and 6.0 at 30-35°C. For every degree the water temperature decreases, the energy efficiency decreases by 10%. This invention minimizes the water tank temperature, ensuring that as long as the water is hot enough for a shower, the tank is preferably filled with cold or warm water. This maximizes instant heating, utilizing a multi-stage (heat-collecting coil, inner water supply casing, outer water supply casing, and thermoelectric heating) instant heating stack. Alternatively, a single or multi-stage instant heating combination can be employed based on user needs, enabling the device to operate in a low-temperature, high-efficiency range for extended periods.

[0050] 3. The present invention combines the instant heating type and the water storage type to achieve a major breakthrough: from the law of conservation of energy in the pressurized water tank, it can be concluded that the instant heating temperature rises by one degree faster than the water storage temperature rise, and the amount of hot water is nearly 5 times more.

[0051] When the temperature of an instant heater rises by one degree, the amount of hot water increases by nearly 20%. When the temperature of an instant heater rises by ten degrees, the amount of hot water increases by nearly 400%. Therefore, the heating rate of an instant heater should be improved as much as possible. A small water tank can be used instead of a large water tank, and a pressurized water tank can be used instead of a non-pressurized water tank.

[0052] 4. This invention combines the fluorine cycle and the water cycle into a fluorine-water cycle, leveraging the simplicity, stability, and durability of the fluorine cycle and the compact, densely packed heat collector coils, allowing for layered heat accumulation and instantaneous heating. It also leverages the high energy efficiency and rapid heating characteristics of the water cycle, utilizing tap water pressure to heat the water cycle. This approach is simple, stable, and durable, reducing the need for vulnerable pumps and water mixing associated with the water cycle heating system.

[0053] 5. The present invention adopts a combination of an instant water storage air energy water heater and an instant electric heating, giving full play to the advantages of low temperature and high efficiency of the air energy water heater, heating the low temperature end of the hot water, and giving full play to the characteristic of the constant calorific value of electric heating, heating the high temperature end of the hot water. At the same time, the instant electric heating is controlled by the ambient temperature and the water tank temperature. When the water temperature is low and the hot water volume is insufficient, the instant electric heating is started.

[0054] 6. The external water supply sleeve of the present invention acts as a copper pipe connecting the main unit and the water tank when hot water is not in use. It only functions as a heating sleeve when hot water is in use. It can be used to reheat hot water outside the water tank, and can also be used to heat hot water in a storage-type air energy water heater.

[0055] 7. The internal water supply sleeve of the present invention, in addition to instantaneous heating, also allows for a large volume of hot water to be supplied from the top of the water tank. Hot water is also introduced to the bottom of the water tank at the other end of the sleeve, and is simultaneously discharged from both ends. This ensures that the bottom of the water tank is filled with flowing hot water, preventing the formation of wastewater. This also eliminates the nutrient requirements of water, a condition that fosters bacterial growth, thereby inhibiting or killing bacteria. The hot water is also flowing water that can be replaced as it is used, preventing the formation of dense water and thus meeting daily needs.

[0056] 8. The heat collecting coil of the present invention has a small diameter and a high winding density. It is vertically erected on the top of the water tank and connected to a uniform heating coil in the middle of the water tank. The temperature of the coil inside the circle of the heat collecting coil is higher than the temperature outside the circle. The heat collecting coil is composed of dozens of layers of circular coils stacked together. According to the principle of heat rising and cold falling, temperature stratification is formed. The water tank temperature is higher than that of a simple uniform heating coil, which meets the demand for instant heating. At the same time, the heat collecting coil is always heating hot water, which is economical and stable.

[0057] 9. The installation method of the water inlet end of the present invention is different. Traditional water tanks are equipped with a check valve with a pressure-loading function at the cold water inlet, which is the main reason for the water tank to burst. Now a tee is installed at the water inlet to make the water tank pressure the same as the tap water pressure. A check valve with a pressure-loading function is installed at one end, and the one-way valve becomes a negative pressure valve. The pressure-loading valve imitates some users who install a one-way valve in front of the water meter for protection, and also reduces the installation of negative pressure valve devices in the water tank.

[0058] 10. The present invention is an instantaneous water storage device and needs to be started at any time. The air conditioning system is a pressure vessel. Before starting the compressor, the high and low pressures need to be balanced. Therefore, the four-way valve needs to be connected for a few seconds after stopping the compressor or before starting the compressor to connect the high and low pressures and balance the pressures.

[0059] 11. This invention uses ambient temperature to control the water tank temperature. Conventional water tank temperature adjustment requires manual adjustment. Adjusting it too low results in insufficient hot water, while adjusting it too high wastes electricity and is time-consuming and labor-intensive. The instantaneous water storage system, however, expands the adjustment range, saves energy, and conveniently uses ambient temperature to control the water temperature.

[0060] 12. The present invention adopts a rapid heating balance system. Because it is an instant water storage type, it needs to be heated quickly when started. Usually, the return air temperature is used as the benchmark, but now it is changed to the exhaust gas temperature as the benchmark, which can quickly reach balance and is more suitable for hot water production.

[0061] 13. The controller of this application has a return water function. It only needs to install a return water pump. When the user uses water, the water flow switch works, the host starts, and the return water pump also works. The return water pump goes through the water flow switch to the user end, connects the check valve through the return water pipe, and then enters the water tank to complete the return water. The water pump return time is controlled by the length of the return water pipe and can be set to 1-5 minutes. The return water pump needs to be turned off for more than 5 minutes (adjustable) when the water flow switch is turned off to start again.

[0062] 14. The present invention can be heated at different temperatures. The low-temperature end can be heated by air energy alone, the medium-temperature end can be heated by air energy and instant electric heating, and the high-temperature end can be heated by instant electric heating alone. During the electric heating process, the return water pump and heating solenoid valve are first opened, and then the instant electric heating is activated. The hot water flows from the water tank outlet to the cold water inlet, forming a circulating electric heating system.

[0063] 15. This invention can activate a high-temperature sterilization function. Although the water tank is sterile without sewage, filling it with cold water in the summer can reduce bacterial growth. As long as the water tank temperature exceeds 30 degrees, the water tank temperature can be raised to above the set high-temperature sterilization temperature to perform high-temperature sterilization. The heating process is performed by electric heating.

[0064] 16. The startup of the device of the present invention is controlled by the water tank temperature. When the water tank temperature is 5 degrees higher than the set temperature and the water flow switch is turned on, the device does not operate and does not switch to hot water during cooling. Only when the water tank temperature is 5 degrees lower than or equal to the set temperature and the water flow switch is turned on does the device operate and switch to hot water during cooling. Therefore, this application has great economic and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 This is a structural diagram of an instant hot water storage and heating control device for air conditioning refrigeration and water heater of the present invention;

[0066] Figure 2 1. It is a schematic structural diagram of the water tank shell and tube heat exchanger of the present invention;

[0067] Figure 3 Schematic diagram of the connection structure of the heat collecting coil and the uniform heating coil of the present invention;

[0068] Figure 4 It is a structural schematic diagram of the inner water supply sleeve of the present invention;

[0069] Figure 5 It is a structural schematic diagram of the external water supply sleeve of the present invention. DETAILED DESCRIPTION

[0070] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings, which are for reference and illustration only and do not limit the scope of patent protection of the present invention.

[0071] like Figure 1-5 As shown, this embodiment provides a method for controlling air conditioning refrigeration and water heater instant hot water storage heating, including:

[0072] S1 air conditioning refrigeration control step: the refrigerant passes through the first valve path through the host heat exchanger condensed, and then evaporated by the air conditioning evaporator to form an air conditioning refrigeration circuit, the host heat exchanger is the condenser;

[0073] S2. Water heater heating control step: The refrigerant passes through the second valve path through the hot water heat exchanger condensing, and then evaporates through the host heat exchanger to form a water heater heating circuit; including steps S21 and S22, the host heat exchanger is an evaporator, the hot water heat exchanger (such as Figure 2 ) includes a water tank shell and tube heat exchanger and an external water supply shell connected to the water tank shell and tube heat exchanger (such as Figure 5 ), the water tank shell and tube heat exchanger is also provided with an inner water supply shell (such as Figure 4 );

[0074] S21. Water heater storage water heating control step: When the water temperature in the water heater tank is lower than the set temperature threshold, the controller controls the compressor to operate, and the refrigerant passes through the second valve path through the water tank shell and tube heat exchanger to condense and evaporate through the main unit heat exchanger to form a water heater storage water heating circuit;

[0075] S22. Control steps for instantaneous water storage heating of water heater: When water is used, the water flow switch is turned on, and the controller controls the operation of the compressor, which is heated through the water tank casing heat exchanger, and then heated and heated through the water supply casing, and then heated and heated through the instantaneous electric heating device. The refrigerant passes through the second valve path, condenses through the water tank casing heat exchanger and the water supply casing, and evaporates through the main heat exchanger, forming an instantaneous heating circuit for the water heater.

[0076] In this embodiment, in step S2, the water tank shell and tube heat exchanger includes a water tank, and also includes a heat collecting coil ( Figure 3 ) and a uniform heating coil located below the water tank that heats lower temperature hot water ( Figure 3), the diameter of the circular tube of the heat collecting coil is smaller than that of the circular tube of the uniform heating coil; the upper end of the heat collecting coil is the refrigerant input port, which is connected to the refrigerant output port of the inner water supply sleeve; the lower end of the heat collecting coil is the refrigerant output port, which is connected to the refrigerant input port of the uniform heating coil; the refrigerant output port at the bottom end of the uniform heating coil is connected to the connecting copper pipe of the water tank, and then connected to the host heat exchanger; the inner water supply sleeve is set inside or outside the circular disk from the top of the heat collecting coil to the bottom end of the uniform heating coil ( Figure 4 ), the bottom end of the inner water supply sleeve is the refrigerant input port, and is connected to the refrigerant output port of the outer water supply sleeve. One end of the inner water supply sleeve is at the top of the water tank inner tank and is used for the upper water inlet of hot water. The other end of the inner water supply sleeve is at the bottom of the water tank inner tank and is provided with a lower water inlet. Cold water enters from the bottom of the water tank and flows out from the top of the water tank. The refrigerant enters from the top of the heat collecting coil at the upper end of the water tank and is output through the bottom end of the uniform heating coil at the bottom end of the water tank. The water flow direction is opposite to the refrigerant flow direction, so as to form convection heating, just like the water tank sleeve ( Figure 1 and Figure 2 ), hot water is output through the hot water connecting pipe, the diameter of the lower water inlet at the bottom end of the inner water supply sleeve is not larger than the diameter of the upper water inlet at the top end of the inner water supply sleeve, and an external water supply sleeve is provided outside the water tank sleeve heat exchanger for conveying refrigerant and heating water during water supply ( Figure 5 ), one end of the external water supply sleeve is connected to the four-way valve, which is the refrigerant input end and the hot water output end, and the external water supply sleeve ( Figure 5 )'s hot water outlet is also connected to a thermoelectric heating device, the other end of the outer water supply sleeve is a refrigerant output end connected to the refrigerant input port of the inner water supply sleeve, and the hot water input port of the outer water supply sleeve is connected to the hot water supply port of the water tank.

[0077] In this embodiment, the water heater heating process is that the uniform heating coil can heat the hot water alone, or the uniform heating coil and one or more of the heat collecting coil, inner water supply sleeve, outer water supply sleeve, i.e., thermoelectric heating device, heat the hot water simultaneously.

[0078] In this embodiment, the water tank includes an inner tank, an insulation layer and an outer shell ( Figure 2), the insulation layer is arranged between the inner tank and the outer shell, the outer water supply sleeve is arranged outside the inner tank, and the inner water supply sleeve is arranged inside the inner tank. The S21 heating process is static heating, the water tank is vertically erected, and the inlet temperature of the refrigerant at the top of the heat collecting coil at the top of the water tank is much higher than the temperature of the refrigerant outlet of the uniform heating coil at the bottom of the water tank. According to the principle of cold sinking and heat rising in the water tank, the temperature difference of the water temperature in the water tank inner tank is increased. The S22 heating process is flow heating, cold water enters from the water inlet at the bottom of the water tank, and hot water flows out from the water outlet at the high end of the water tank. The refrigerant enters from the high temperature of the water tank and flows out from the low temperature of the water tank, forming convection heat exchange.

[0079] An instant hot water storage and heating control device for air conditioning refrigeration and water heater, characterized by:

[0080] It includes a compressor, a four-way valve, a main engine heat exchanger, an air-conditioning evaporator and a hot water heat exchanger. The hot water heat exchanger includes a water tank casing heat exchanger and an external water supply casing;

[0081] The compressor is connected to the host heat exchanger and the air conditioning evaporator in sequence through the first valve passage of the four-way valve to form an air conditioning refrigeration circuit;

[0082] The compressor is connected to the hot water heat exchanger and the main unit heat exchanger in sequence through the second valve passage of the four-way valve to form a water heater heating circuit;

[0083] Cold water enters the water tank through the flow stabilizing pipe and enters the bottom of the water tank, then flows in through the internal water supply sleeve, and is connected to the hot water supply outlet of the water tank through the connecting pipe. The hot water supply outlet is then connected to the external water supply sleeve, and finally connected to the water flow switch, and then reaches the user.

[0084] In this embodiment, the four interfaces of the four-way valve include a first interface, a second interface, a third interface and a fourth interface;

[0085] The first valve path is:

[0086] The first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the third interface, the third interface is connected to the refrigerant inlet of the host heat exchanger, the refrigerant outlet of the host heat exchanger is connected to the refrigerant inlet of the air conditioner evaporator, the refrigerant outlet of the air conditioner evaporator is connected to the second interface, the second interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a first throttle valve and a first stop valve are connected between the air conditioner evaporator and the host heat exchanger; a first check valve and a second stop valve are connected between the refrigerant outlet of the air conditioner evaporator and the second interface of the four-way valve;

[0087] In this embodiment, the second valve passage is:

[0088] The first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the second interface, the second interface is connected to the refrigerant inlet of the hot water heating heat exchanger, the refrigerant outlet of the hot water heat exchanger is connected to the refrigerant inlet of the main heat exchanger, the refrigerant outlet of the main heat exchanger is connected to the third interface, the third interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a third stop valve and an external water supply sleeve are connected between the second interface and the refrigerant inlet of the hot water heat exchanger; a second check valve, a second throttle valve and a fourth stop valve are connected between the refrigerant outlet of the hot water heat exchanger and the refrigerant inlet of the main heat exchanger.

[0089] In this embodiment, when cold water is introduced, the cold water inlet of the water tank is connected to a negative pressure tee, one end of the negative pressure tee is connected to a check valve with a pressure relief function, the other end of the negative pressure tee is connected to a bypass tee, one end of the bypass tee is connected to a bypass solenoid valve, and the other end is connected to a return water tee, one end of the return water tee is connected to a return water check valve, and the other end of the return water tee is connected to the cold water inlet.

[0090] In this embodiment, when supplying hot water, cold water enters the water tank, and hot water passes through the upper and lower water inlets of the inner water supply sleeve, and is then connected to the hot water outlet of the water tank through a connecting pipe. The hot water outlet is connected to the input end of the outer water supply sleeve through a connecting pipe, and the hot water output end of the outer water supply sleeve is connected to a water pump. The other end of the water pump is connected to a thermoelectric heating device, and the other end of the thermoelectric heating device is connected to a water flow tee. One end of the water flow tee is connected to a bypass solenoid valve, and the other end of the water flow tee is connected to a water flow switch. The water flow switch is connected to the user for water use, and return water is connected to a return water check valve.

[0091] In this embodiment, a controller is further included, which is used to control the start and stop of the compressor, the path switching water pump of the four-way valve, that is, the thermoelectric heating and the opening and closing of the solenoid valve. The controller is also connected to an ambient temperature probe, a water flow switch and a water tank temperature probe. The control process includes:

[0092] (1) Hot water storage start:

[0093] When the instant hot water storage type heats hot water, when the water temperature in the water tank is lower than the set temperature and the threshold, the controller controls the compressor to work. When the user uses hot water, the water flow switch is turned on, and the controller controls the compressor to work to complete instant heating.

[0094] (2) Heating pressure balance:

[0095] Balancing process: before the compressor is started or shut down, the controller controls the four-way valve to work, and the refrigerant passes through the first and third interfaces of the four-way valve, and the refrigerant with higher pressure in the first interface is depressurized by the host heat exchanger with lower pressure. The second and fourth interfaces of the four-way valve are connected, and the water tank shell and pipe heat exchanger with higher refrigerant pressure releases pressure to the compressor air tank to complete the balancing process. After the pressure is balanced, the controller controls the four-way valve to disconnect, and the compressor is started. The opening of the electronic expansion valve is always maintained at the optimal state, and the temperature rises quickly to achieve the purpose of instant heating.

[0096] (3) Temperature control:

[0097] The instantaneous heating storage water supply method is to heat the water tank temperature with an instantaneous heat exchanger or electric heating to supply hot water. The water tank can be filled with cold water, warm water or hot water, and the adjustment range is wide. In order to facilitate control and energy saving and reduce the complexity of adjustment, the hot water temperature of the water tank is controlled by the set temperature and the ambient temperature, and the set temperature is automatically adjusted as the ambient temperature changes.

[0098] (4) Backwater control:

[0099] When the instantaneous storage air energy water heater needs to return water through the water flow switch and the controller controls the return water pump, the return water pump is installed and the water pump pressurization return water time is set according to the length of the return water pipe to complete the return water; when the user needs water, the water flow switch is turned on and the controller controls the return water pump to work. After the return water is completed, the water pump stops working. The second return water is during the period when the water flow switch is not turned on. The return water interruption time can be set based on the time it takes for hot water to become warm water in the return water pipe, and the return water is started again.

[0100] (5) Instant electric heating:

[0101] In summer, the energy efficiency is high, the water tank is filled with cold water or warm water, and it is heated immediately after it is turned on. Only heat pump heating is needed to meet the needs of hot showers. In winter, the energy efficiency is low, the water tank is filled with warm water or hot water, and the hot water temperature is the water tank temperature plus the instant heat exchanger temperature. When the ambient temperature or the water tank temperature is lower than 15℃ (adjustable), the water flow switch is turned on, and the controller first controls the compressor to work, and then controls the instant electric heating to work. The instant electric heating can also complete the return water with the heating solenoid valve, and can also complete high-temperature sterilization and temperature-differential heating with the return water pump.

[0102] (6) Heating mode:

[0103] The energy efficiency of the air-conditioning instant thermal storage water heater changes with the change of the water tank temperature. The higher the water temperature, the lower the energy efficiency, and vice versa. Make full use of the advantages of low temperature and high efficiency of the air-conditioning instant thermal storage water heater. Use the air-conditioning instant thermal storage water heater for heating at low water temperature, and use instant electric heating (or electromagnetic energy) with constant calorific value to heat the hot water at higher water temperature.

[0104] (7) Heating by temperature division:

[0105] In cold seasons, the temperature difference is large and the hot water consumption changes greatly. The water tank temperature needs to be adjusted to ensure the hot water supply. When the hot water temperature is lower than the adjustable 45℃, it is heated by a single air-conditioning instantaneous storage water heater. When the medium temperature is adjustable at 45-55℃, the air-conditioning instantaneous storage water heater and instant electric heating work simultaneously. When the high temperature is adjustable at 55-75℃, it is heated by a single instant electric heating.

[0106] (8) High temperature sterilization:

[0107] Because cold water enters the water tank from the low end and hot water flows out from the high end, sewage is deposited and water nutrientization is formed. In addition, the water temperature is low, which is suitable for bacterial reproduction and needs to be sterilized regularly. When the water temperature is lower than the adjustable 55℃, it is heated by the air-conditioning instantaneous storage water heater. When it is higher than or equal to the adjustable 55℃, the water pump is started, the bypass solenoid valve is opened, and the instantaneous electric heating is started to form a circulating heating device to an adjustable 75℃ high temperature sterilization.

[0108] (9) Priority procedures:

[0109] When the water tank temperature is higher than the set temperature, in order to protect the equipment and save energy, when it is 5℃ higher than the set temperature (adjustable), the cooling mode will not be switched to hot water when the water flow switch is turned on. When the water tank temperature is lower than or equal to the set temperature (adjustable) by 5℃, the cooling mode will be switched to hot water or the equipment will be started to heat hot water when the water flow switch is turned on.

[0110] The air conditioning refrigeration and water heater instant hot water storage heating and control method and device provided by the present invention achieve the following beneficial effects:

[0111] 1. The instant water storage water heater of the present invention is different from the traditional air-conditioning water heater. The hot water heat exchanger and evaporator are first connected in parallel, and then in series with the compressor and condenser. The hot water heat exchanger and evaporator can work separately. When not working, they are like low-pressure gas storage tanks. There is no intermittent operation with more or less refrigerant, which completely solves the refrigerant balance problem. The water heater will also be integrated with the air conditioner.

[0112] 2. This invention fully leverages the advantages of both instantaneous and storage water heaters. Industry-recognized data from air-energy water heater test chambers indicates an energy efficiency of 2.0 at a water tank temperature of 50-55°C, 4.0 at 40-45°C, and 6.0 at 30-35°C. For every degree the water temperature decreases, the energy efficiency decreases by 10%. This invention minimizes the water tank temperature, ensuring that as long as the water is hot enough for a shower, the tank is preferably filled with cold or warm water. This maximizes instant heating, utilizing a multi-stage (heat-collecting coil, inner water supply casing, outer water supply casing, and thermoelectric heating) instant heating stack. Alternatively, a single or multi-stage instant heating combination can be employed based on user needs, enabling the device to operate in a low-temperature, high-efficiency range for extended periods.

[0113] 3. The present invention combines the instant heating type and the water storage type to achieve a major breakthrough: from the law of conservation of energy in the pressurized water tank, it can be concluded that the instant heating temperature rises by one degree faster than the water storage temperature rise, and the amount of hot water is nearly 5 times more.

[0114] When the temperature of an instant heater rises by one degree, the amount of hot water increases by nearly 20%. When the temperature of an instant heater rises by ten degrees, the amount of hot water increases by nearly 400%. Therefore, the heating rate of an instant heater should be improved as much as possible. A small water tank can be used instead of a large water tank, and a pressurized water tank can be used instead of a non-pressurized water tank.

[0115] 4. This invention combines the fluorine cycle and the water cycle into a fluorine-water cycle, leveraging the simplicity, stability, and durability of the fluorine cycle and the compact, densely packed heat collector coils, allowing for layered heat accumulation and instantaneous heating. It also leverages the high energy efficiency and rapid heating characteristics of the water cycle, utilizing tap water pressure to heat the water cycle. This approach is simple, stable, and durable, reducing the need for vulnerable pumps and water mixing associated with the water cycle heating system.

[0116] 5. The present invention adopts a combination of an instant water storage air energy water heater and an instant electric heating, giving full play to the advantages of low temperature and high efficiency of the air energy water heater, heating the low temperature end of the hot water, and giving full play to the characteristic of the constant calorific value of electric heating, heating the high temperature end of the hot water. At the same time, the instant electric heating is controlled by the ambient temperature and the water tank temperature. When the water temperature is low and the hot water volume is insufficient, the instant electric heating is started.

[0117] 6. The external water supply sleeve of the present invention acts as a copper pipe connecting the main unit and the water tank when hot water is not in use. It only functions as a heating sleeve when hot water is in use. It can be used to reheat hot water outside the water tank, and can also be used to heat hot water in a storage-type air energy water heater.

[0118] 7. The internal water supply sleeve of the present invention, in addition to instantaneous heating, also allows for a large volume of hot water to be supplied from the top of the water tank. Hot water is also introduced to the bottom of the water tank at the other end of the sleeve, and is simultaneously discharged from both ends. This ensures that the bottom of the water tank is filled with flowing hot water, preventing the formation of wastewater. This also eliminates the nutrient requirements of water, a condition that fosters bacterial growth, thereby inhibiting or killing bacteria. The hot water is also flowing water that can be replaced as it is used, preventing the formation of dense water and thus meeting daily needs.

[0119] 8. The heat collecting coil of the present invention has a small diameter and a high winding density. It is vertically erected on the top of the water tank and connected to a uniform heating coil in the middle of the water tank. The temperature of the coil inside the circle of the heat collecting coil is higher than the temperature outside the circle. The heat collecting coil is composed of dozens of layers of circular coils stacked together. According to the principle of heat rising and cold falling, temperature stratification is formed. The water tank temperature is higher than that of a simple uniform heating coil, which meets the demand for instant heating. At the same time, the heat collecting coil is always heating hot water, which is economical and stable.

[0120] 9. The installation method of the water inlet end of the present invention is different. Traditional water tanks are equipped with a check valve with a pressure-loading function at the cold water inlet, which is the main reason for the water tank to burst. Now a tee is installed at the water inlet to make the water tank pressure the same as the tap water pressure. A check valve with a pressure-loading function is installed at one end, and the one-way valve becomes a negative pressure valve. The pressure-loading valve imitates some users who install a one-way valve in front of the water meter for protection, and also reduces the installation of negative pressure valve devices in the water tank.

[0121] 10. The present invention is an instantaneous water storage device and needs to be started at any time. The air conditioning system is a pressure vessel. Before starting the compressor, the high and low pressures need to be balanced. Therefore, the four-way valve needs to be connected for a few seconds after stopping the compressor or before starting the compressor to connect the high and low pressures and balance the pressures.

[0122] 11. This invention uses ambient temperature to control the water tank temperature. Conventional water tank temperature adjustment requires manual adjustment. Adjusting it too low results in insufficient hot water, while adjusting it too high wastes electricity and is time-consuming and labor-intensive. The instantaneous water storage system, however, expands the adjustment range, saves energy, and conveniently uses ambient temperature to control the water temperature.

[0123] 12. The present invention adopts a rapid heating balance system. Because it is an instant water storage type, it needs to be heated quickly when started. Usually, the return air temperature is used as the benchmark, but now it is changed to the exhaust gas temperature as the benchmark, which can quickly reach balance and is more suitable for hot water production.

[0124] 13. The controller of this application has a return water function. It only needs to install a return water pump. When the user uses water, the water flow switch works, the host starts, and the return water pump also works. The return water pump goes through the water flow switch to the user end, connects the check valve through the return water pipe, and then enters the water tank to complete the return water. The water pump return time is controlled by the length of the return water pipe and can be set to 1-5 minutes. The return water pump needs to be turned off for more than 5 minutes (adjustable) when the water flow switch is turned off to start again.

[0125] 14. The present invention can be heated at different temperatures. The low-temperature end can be heated by air energy alone, the medium-temperature end can be heated by air energy and instant electric heating, and the high-temperature end can be heated by instant electric heating alone. During the electric heating process, the return water pump and heating solenoid valve are first opened, and then the instant electric heating is activated. The hot water flows from the water tank outlet to the cold water inlet, forming a circulating electric heating system.

[0126] 15. This invention can activate a high-temperature sterilization function. Although the water tank is sterile without sewage, filling it with cold water in the summer can reduce bacterial growth. As long as the water tank temperature exceeds 30 degrees, the water tank temperature can be raised to above the set high-temperature sterilization temperature to perform high-temperature sterilization. The heating process is performed by electric heating.

[0127] 16. The startup of the device of the present invention is controlled by the water tank temperature. When the water tank temperature is 5 degrees higher than the set temperature and the water flow switch is turned on, the device does not operate and does not switch to hot water during cooling. Only when the water tank temperature is 5 degrees lower than or equal to the set temperature and the water flow switch is turned on does the device operate and switch to hot water during cooling. Therefore, this application has great economic and practical value.

[0128] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. An air conditioning refrigeration and water heater instant water storage and heating control device, characterized by: It includes a compressor, a four-way valve, a main engine heat exchanger, an air-conditioning evaporator and a hot water heat exchanger. The hot water heat exchanger includes a water tank casing heat exchanger and an external water supply casing; The compressor is connected to the host heat exchanger and the air conditioning evaporator in sequence through the first valve passage of the four-way valve to form an air conditioning refrigeration circuit; The compressor is connected to the hot water heat exchanger and the main unit heat exchanger in sequence through the second valve passage of the four-way valve to form a water heater heating circuit; The water tank shell and tube heat exchanger includes a water tank, and also includes a heat collecting coil for heating higher temperature hot water located above the water tank inner tank and a uniform heating coil located below the water tank inner tank for heating lower temperature hot water, which is vertically arranged in the water tank for fluorine water circulation. The circular tube diameter of the heat collecting coil is smaller than that of the uniform heating coil; the upper end of the heat collecting coil is a refrigerant input port, which is connected to the refrigerant output port of the inner water supply shell, and the lower end of the heat collecting coil is a refrigerant output port, which is connected to the refrigerant output port of the uniform heating coil. The refrigerant input port is connected, the refrigerant output port at the bottom of the uniform heating coil is connected to the connecting copper pipe of the water tank, and then connected to the host heat exchanger. The inner water supply sleeve is set inside the disc or outside the disc from the top of the heat collecting coil to the bottom of the uniform heating coil. The bottom end of the inner water supply sleeve is the refrigerant input port and is connected to the refrigerant output port of the outer water supply sleeve. One end of the inner water supply sleeve is at the top of the water tank liner and is used for the upper water inlet of hot water. The other end of the inner water supply sleeve is at the bottom of the water tank liner and is provided with a lower water inlet. The cold water Entering from the bottom of the water tank and flowing out from the top of the water tank, the refrigerant enters from the top of the heat collecting coil at the top of the water tank and is output through the bottom of the uniform heating coil at the bottom of the water tank. The water flow direction is opposite to the refrigerant flow direction to form convection heating. Hot water is output through the hot water connecting pipe. The diameter of the lower water inlet at the bottom end of the inner water supply sleeve is not larger than the diameter of the upper water inlet at the top end of the inner water supply sleeve. An external water supply sleeve for conveying refrigerant and heating water is provided outside the water tank sleeve heat exchanger. One end of the external water supply sleeve is connected to The four-way valve is a refrigerant input end and a hot water output end. The hot water outlet of the external water supply sleeve is also connected to a thermoelectric heating device. The other end of the external water supply sleeve is a refrigerant output end connected to the refrigerant input end of the internal water supply sleeve. The hot water input end of the external water supply sleeve is connected to the hot water supply end of the water tank. Cold water enters the water tank and enters the bottom of the water tank through the flow stabilizing pipe. It enters the water from the upper and lower parts of the internal water supply sleeve and is then connected to the hot water supply end of the water tank through a connecting pipe. The hot water supply end is then connected to the external water supply sleeve and finally connected to the water flow switch before reaching the user.

2. The instant hot water storage and heating control device for air conditioning refrigeration and water heater according to claim 1, characterized in that: The four interfaces of the four-way valve include a first interface, a second interface, a third interface and a fourth interface; The first valve path is: The first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the third interface, the third interface is connected to the refrigerant inlet of the host heat exchanger, the refrigerant outlet of the host heat exchanger is connected to the refrigerant inlet of the air-conditioning evaporator, the refrigerant outlet of the air-conditioning evaporator is connected to the second interface, the second interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a first throttle valve and a first stop valve are connected between the air-conditioning evaporator and the host heat exchanger; a first check valve and a second stop valve are connected between the refrigerant outlet of the air-conditioning evaporator and the second interface of the four-way valve.

3. The instant hot water storage and heating control device for air conditioning refrigeration and water heater according to claim 2, characterized in that: The second valve path is: The first interface is connected to the refrigerant outlet of the compressor, the first interface is communicated with the second interface, the second interface is connected to the refrigerant inlet of the hot water heating heat exchanger, the refrigerant outlet of the water tank shell and tube heat exchanger is connected to the refrigerant inlet of the main heat exchanger, the refrigerant outlet of the main heat exchanger is connected to the third interface, the third interface is communicated with the fourth interface, and the fourth interface is connected to the refrigerant inlet of the compressor; a third stop valve and an external water supply sleeve are connected between the second interface and the refrigerant inlet of the water tank shell and tube heat exchanger; a second check valve, a second throttle valve and a fourth stop valve are connected between the refrigerant outlet of the water tank shell and tube heat exchanger and the refrigerant inlet of the main heat exchanger.

4. The instant hot water storage and heating control device for air conditioning refrigeration and water heater according to claim 1, characterized in that: When cold water is introduced, the cold water input port of the water tank is connected to a negative pressure tee, one end of the negative pressure tee is connected to a check valve with a pressure relief function, the other end of the negative pressure tee is connected to a bypass tee, one end of the bypass tee is connected to a bypass solenoid valve, and the other end is connected to a return water tee, one end of the return water tee is connected to a return water check valve, and the other end of the return water tee is connected to the cold water inlet. When hot water is supplied, cold water enters the water tank, and hot water passes through the upper and lower water inlets of the inner water supply sleeve, and is then connected to the hot water supply outlet of the water tank through a connecting pipe. The hot water outlet is connected to the input end of the external water supply sleeve through a connecting pipe, and the hot water output end of the external water supply sleeve is connected to a water pump. The other end of the water pump is connected to a thermoelectric heating device, and the other end of the thermoelectric heating device is connected to a water flow tee. One end of the water flow tee is connected to a bypass solenoid valve, and the other end of the water flow tee is connected to a water flow switch. The water flow switch is connected to the user for water use, and the return water is connected to the return water check valve. The system also includes a controller for controlling the start and stop of the compressor, the path switching water pump of the four-way valve, the thermoelectric heating, and the opening and closing of the solenoid valve. The controller is also connected to an ambient temperature probe, a water flow switch, and a water tank temperature probe. The control process includes: (1) Hot water storage start: When the instant hot water storage type heats hot water, when the water temperature in the water tank is lower than the set temperature and the threshold, the controller controls the compressor to work. When the user uses hot water, the water flow switch is turned on, and the controller controls the compressor to work to complete instant heating. (2) Heating pressure balance: Balancing process: before the compressor is started or shut down, the controller controls the four-way valve to work, and the refrigerant passes through the first and third interfaces of the four-way valve, the refrigerant with higher pressure in the first interface is depressurized by the heat exchanger of the host with lower pressure, the second and fourth interfaces of the four-way valve are connected, and the water tank shell and pipe heat exchanger with higher refrigerant pressure releases pressure to the compressor air storage tank to complete the balancing process. After the pressure is balanced, the controller controls the four-way valve to disconnect, the compressor is turned on, and the opening of the electronic expansion valve is always maintained at the optimal state, so that the temperature rises quickly to achieve the purpose of instant heating; (3) Temperature control: The instantaneous water storage type water supply method is to heat the water tank temperature with an instantaneous heat exchanger or electric heating to heat the water. The water tank can be filled with cold water, warm water or hot water. The adjustment range is wide. In order to facilitate control and energy saving and reduce the tediousness of adjustment, the hot water temperature of the water tank is controlled by the set temperature and the ambient temperature. The set temperature is automatically adjusted as the ambient temperature changes. (4) Backwater control: The instant storage air energy water heater controls the return water pump through the water flow switch and the controller. When return water is needed, the return water pump is installed and the water pump pressurization return water time is set according to the length of the return water pipe to complete the return water; when the user needs water, the water flow switch is turned on and the controller controls the return water pump to work. After the return water is completed, the water pump stops working. The second return water is during the period when the water flow switch is not turned on. The return water interruption time can be set to the time it takes for hot water to become warm water in the return water pipe, and the return water is started again; (5) Instant electric heating: In summer, the energy efficiency is high, the water tank is filled with cold water or warm water, and it is heated immediately after it is turned on. Only the heat pump needs to heat it to meet the needs of hot showers. In winter, the energy efficiency is low, the water tank is filled with warm water or hot water, and the hot water temperature is the water tank temperature plus the instant heat exchanger temperature. When the ambient temperature or the water tank temperature is lower than the adjustable 15℃, the water flow switch is turned on, and the controller first controls the compressor to work, and then controls the instant electric heating to work. The instant electric heating can also complete the return water with the heating solenoid valve, and can also complete high-temperature sterilization and temperature-differential heating with the return water pump; (6) Heating mode: The energy efficiency of the air-conditioning instant hot water storage water heater changes with the change of the water tank temperature. The higher the water temperature, the lower the energy efficiency, and vice versa. Take full advantage of the low temperature and high efficiency of the air-conditioning instant hot water storage water heater. Use the air-conditioning instant hot water storage water heater for heating at low water temperature, and use the instant electric heating or electromagnetic energy with constant calorific value to heat the hot water at higher water temperature. (7) Temperature separation heating: In cold seasons, the temperature difference is large and the hot water consumption varies greatly. The water tank temperature needs to be adjusted to ensure hot water supply. When the hot water temperature is lower than the adjustable 45℃, it is heated by a single air-conditioning instantaneous storage water heater. When the medium temperature is adjustable at 45-55℃, the air-conditioning instantaneous storage water heater and instantaneous electric heating work together to complete the work. When the high temperature is adjustable at 55-75℃, it is completed by a single instantaneous electric heating. (8) High temperature sterilization: Because cold water enters the water tank from the lower end and hot water flows out from the higher end, sewage is deposited and water nutrient is formed. In addition, the water temperature is relatively low, which is suitable for bacterial reproduction. Regular sterilization is required. When the water temperature is lower than the adjustable 55℃, it is heated by the air-conditioning instantaneous storage water heater. When it is higher than or equal to the adjustable 55℃, the water pump is started, the bypass solenoid valve is opened, and the instantaneous electric heating is started to form a circulating heating device to an adjustable 75℃ for high-temperature sterilization. (9) Priority procedures: When the water tank temperature is higher than the set temperature, in order to protect the equipment and save energy, when it is 5℃ higher than the set temperature, the cooling or water flow switch will not switch to hot water when it is turned on. When the water tank temperature is lower than or equal to the set temperature, the cooling will switch to hot water or start the equipment to heat hot water when the water flow switch is turned on.

5. A control method for the instantaneous hot water storage and heating control device for air conditioning refrigeration and water heater according to claim 1, characterized in that: include: S1 air conditioning refrigeration control step: the refrigerant passes through the first valve path through the host heat exchanger condensed, and then evaporated by the air conditioning evaporator to form an air conditioning refrigeration circuit, the host heat exchanger is the condenser; S2. Water heater heating control step: refrigerant passes through a second valve path, condenses through the hot water heat exchanger, and evaporates through the main unit heat exchanger, forming a water heater heating circuit; comprising steps S21 and S22, wherein the main unit heat exchanger is an evaporator, and the hot water heat exchanger includes a water tank shell and tube heat exchanger and an external water supply shell connected to the water tank shell and tube heat exchanger, and the water tank shell and tube heat exchanger is also provided with an internal water supply shell; S21. Water heater storage water heating control step: When the water temperature in the water heater tank is lower than the set temperature threshold, the controller controls the compressor to operate, and the refrigerant passes through the second valve path through the water tank shell and tube heat exchanger to condense and evaporate through the main unit heat exchanger to form a water heater storage water heating circuit; S22. Control steps for instantaneous water storage heating of water heater: When water is used, the water flow switch is turned on, and the controller controls the operation of the compressor, which is heated through the water tank casing heat exchanger, and then heated and heated through the water supply casing, and then heated and heated through the instantaneous electric heating device. The refrigerant passes through the second valve path, condenses through the water tank casing heat exchanger and the water supply casing, and evaporates through the main heat exchanger, forming an instantaneous heating circuit for the water heater.

6. The method for controlling instantaneous water storage and heating of an air conditioner refrigeration and water heater according to claim 5, characterized in that: In step S2, the water tank shell and tube heat exchanger includes a water tank, and also includes a heat collecting coil for heating higher temperature hot water located above the water tank inner tank and a uniform heating coil for heating lower temperature hot water located below the water tank inner tank for fluorine water circulation. The disc diameter of the heat collecting coil is smaller than the disc diameter of the uniform heating coil; the upper end of the heat collecting coil is a refrigerant input port, which is connected to the refrigerant output port of the inner water supply sleeve, the lower end of the heat collecting coil is a refrigerant output port, which is connected to the refrigerant input port of the uniform heating coil, the refrigerant output port at the bottom end of the uniform heating coil is connected to the connecting copper pipe of the water tank, and then connected to the main heat exchanger, the inner water supply sleeve is arranged inside or outside the disc from the top of the heat collecting coil to the bottom end of the uniform heating coil, the bottom end of the inner water supply sleeve is the refrigerant input port, and is connected to the refrigerant output port of the outer water supply sleeve, one end of the inner water supply sleeve is at the top of the water tank inner tank, and is used The hot water is fed from the top, and the other end of the inner water supply sleeve is at the bottom of the water tank inner tank, and is provided with a lower water inlet. Cold water enters from the bottom of the water tank and flows out from the top of the water tank. The refrigerant enters from the top of the heat collecting coil at the upper end of the water tank and is output through the bottom end of the uniform heating coil at the bottom end of the water tank. The water flow direction is opposite to the refrigerant flow direction, so as to form convection heating. Hot water is output through the hot water connecting pipe. The diameter of the lower water inlet at the bottom end of the inner water supply sleeve is not larger than the diameter of the inner water supply sleeve top. The diameter of the upper water inlet at the end is set, and an external water supply sleeve for conveying refrigerant and heating during water supply is arranged outside the water tank sleeve heat exchanger. One end of the external water supply sleeve is connected to the four-way valve, which is the refrigerant input end and the hot water output end. The hot water outlet of the external water supply sleeve is also connected to a thermoelectric heating device. The other end of the external water supply sleeve is the refrigerant output end connected to the refrigerant input port of the internal water supply sleeve, and the hot water input port of the external water supply sleeve is connected to the hot water supply port of the water tank.

7. The method for controlling instantaneous water storage and heating of an air conditioner refrigeration and water heater according to claim 5, characterized in that: The heating process of the water heater is that the uniform heating coil can heat the hot water alone, or the uniform heating coil and one or more of the heat collecting coil, the inner water supply sleeve, the outer water supply sleeve, or the thermoelectric heating device can heat the hot water simultaneously.

8. The method for controlling instantaneous water storage and heating of an air conditioner refrigeration and water heater according to claim 5, characterized in that: The water tank includes an inner tank, an insulation layer and an outer shell, the insulation layer is arranged between the inner tank and the outer shell, the outer water supply sleeve is arranged outside the inner tank, and the inner water supply sleeve is arranged inside the inner tank. The S21 heating process is static heating, the water tank is vertically erected, and the inlet temperature of the refrigerant at the top of the heat collecting coil at the top of the water tank is much higher than the temperature of the refrigerant outlet of the uniform heating coil at the bottom of the water tank. According to the principle of cold sinking and heat rising in the water tank, the temperature difference of the water temperature in the water tank inner tank is increased. The S22 heating process is flow heating, cold water enters from the water inlet at the bottom of the water tank, and hot water flows out from the water outlet at the high end of the water tank. The refrigerant enters from the high temperature of the water tank and flows out from the low temperature of the water tank, forming convection heat exchange.

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