Integrated multifunctional machine for cooling, heating and water heating

Abstract

The utility model relates to an integrated multifunctional machine for cooling, heating and water heating, which is characterized by cooling and heating water in summer, dehumidifying and supplementing heat in plum rain, heating and humidifying hot water in winter and heating water in spring and autumn through heat pump circulation; according to the composition and connection mode of the fluorine path, an outlet of the compressor is connected with the four-way valve and the first hot water heat exchanger; an outlet of the first hot water heat exchanger is respectively connected with liquid inlets of the outdoor heat exchanger and the second hot water heat exchanger through a first throttler and a second throttler, and the two liquid inlets are mutually connected through a third bidirectional throttler and a fourth bidirectional throttler; a second interface, a third interface and a fourth interface of the four-way valve are respectively connected with the outdoor, an air inlet of the second hot water heat exchanger and the gas-liquid separator; a fluorine path four-circulation loop is formed; a hot air humidifying heat exchanger is additionally arranged; two water pumps and a three-way valve organize three circulating waterways, six functions are achieved, and hot water, refrigeration, heating, dehumidification and automatic operation modes are set. Circulation of four-season hot water making, cold water feeding for refrigeration and dehumidification and hot water heating and humidifying is achieved; welding an integrated fluorine path connecting pipe; the device is multifunctional, easy to control, simple and energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of an air-conditioning heat pump heating hot water system and a room environment. Background Art

[0002] As people's living standards improve, they require suitable temperature, humidity, cleanliness, and hot water in all seasons in their homes. They also require energy conservation, environmental protection, material saving, simple installation, and easy use. However, the existing technology is: using cold and warm air conditioners, which cannot produce hot water. While cooling the indoor air in summer, a large amount of hot air is discharged to the outdoors, which not only fails to utilize its heat energy, but also causes environmental thermal pollution; it is a waste of equipment to be idle for a long time in spring and autumn; to solve the problem of domestic hot water, electric water heaters are generally used. Electric energy is high-quality energy, and using it to heat water is a waste of energy quality; using air-energy heat pump water heaters can save more than 70% energy than electric water heaters, which is a good way to save energy scientifically, but due to its single function, it has limited effect; solar water heaters are affected by site and climate factors and are gradually shrinking in use , residents of high-rise buildings cannot use them; gas water heaters are not energy-saving and are more restricted by resource pipelines; in winter, homes are heated by the central heating in the north. Although the indoor temperature is very warm, it is too dry and the indoor humidity is too low, which makes it easy to get tracheal respiratory problems; currently, air source heat pump hot water floor heating is promoted. Although the indoor temperature is gentle and the comfort is increased, the floor heating project is huge, and the material and labor hours are more than twice that of the heat pump host; in the southern region, it is humid and cold in spring, and the indoor temperature is only a dozen degrees, but it is damp and sticky. Carpets, corners, and wall foundations are all moldy and spotted. Wardrobe clothes and stockpiled food are moldy and spoiled, and moisture is very harmful; currently, the dehumidification of indoor air conditioners uses a refrigeration cycle to reduce the wall temperature of the indoor fluorine-air heat exchanger to below the dew point temperature, and moisture condenses on the wall of the indoor fluorine-air heat exchanger. Therefore, the indoor fluorine-wind heat exchanger has to blow cold air into the room. When it is rainy, the room temperature is not high, so people feel uncomfortable. In addition, due to the decrease in indoor temperature, it is difficult for moisture in the corners with high humidity to obtain heat for evaporation. Therefore, the defect of the dehumidification method of the existing air conditioner is that it cannot add heat to the room during the dehumidification process. In addition, the indoor air is polluted by carbon dioxide and sweat emitted by people's breathing, formaldehyde emitted by furniture, and influenza, etc., and the purification of indoor air is an important issue related to people's health. The current air conditioner does not have this ability. In addition, the biggest obstacle to using air source heat pumps for heating in winter is the defrosting problem, which is the lack of heat source. Defrosting depends solely on the compression work of the compressor, and the energy for defrosting is not economical, and the defrosting speed is slow. Insufficient energy and long defrosting time seriously reduce the heating capacity of the heat pump. In severe weather, frequent defrosting will cause the heat pump to fail to work normally. Since the indoor fluorine-air heat exchanger cannot obtain heat to evaporate the refrigerant liquid, there may be a risk of compressor liquid hammer. In addition, the split-type heating and cooling air conditioners currently in use have a wall separating the indoor and outdoor units, and the fluorine circuit must be connected on site with a detachable movable connecting pipe. The mechanical seal of the connecting joint is bound to have a slight leakage, so fluorine refilling is often required. In addition, the fluorine in the fluorine circuit of the factory-made machine is filled in the outdoor unit at the factory, while the indoor unit and the external hot water heat exchanger are not filled with fluorine. The fluorine in the outdoor unit must be used on site to blow air into the indoor unit heat exchange pipeline and then refill it with fluorine. This cannot guarantee the accuracy of the Freon amount and affects the efficiency of the air conditioner. Summary of the invention

[0003] In view of the fact that the energy-saving space of existing air conditioners has not been fully explored, the functions of heat pump water heaters are single, dehumidification reduces the room temperature, heating makes the room too dry, air source heat pump defrosts but lacks energy source, floor heating has stable temperature but too high cost, too complicated construction, split air conditioners are difficult to connect, and the refrigerant of the outdoor unit is used to purge the indoor unit pipeline during installation, resulting in the loss of fluorine. The utility model proposes an integrated cold, warm and hot water multifunctional machine, which has the functions of cooling water air conditioning and hot water in summer, and hot water is free; in spring and autumn, it absorbs outdoor air heat energy to produce domestic hot water, which saves more than 70% energy than electric water heaters; in winter, it produces hot water for Heating, and independently providing domestic hot water; can provide heat for homemade hot water for defrosting cycle, and has heating and humidification, spring dehumidification and heating, a total of six functions, simplified structure, closed fluorine circuit circulation system; the integrated cold, warm and hot water multifunctional machine described in the utility model, its fluorine circuit only uses one four-way valve, can organize four functional cycles; its cold and warm water circuit organizes three cycles, and undertakes six functions; the advanced integrated cold, warm and hot water multifunctional machine, the domestic hot water system heats the tap water separately, which is safe and hygienic; the integrated cold, warm and hot water multifunctional machine of the utility model is energy-saving and material-saving, has complete functions, is easy to install, does not leak fluorine, and is safe and comfortable.

[0004] The utility model discloses an integrated cooling and heating hot water multifunctional machine, which is a multifunctional, highly efficient and energy-saving cooling and heating air-conditioning and four-season hot water machine, and is characterized in that: the integrated cooling and heating hot water multifunctional machine is composed of an integrated fluorine cycle cooling and heating hot water machine, a water circulation heat exchange system and a hot water supply water circuit, as well as a signal detection and control system; it has the functions of cooling water air conditioning and hot water production in summer, hot water heating production in winter, dehumidification and heat supplementation, drying and humidification, and energy-saving hot water production in four seasons; the integrated fluorine cycle cooling and heating hot water machine comprises: a compressor, a four-way valve, an outdoor air heat exchanger, the first and second hot water heat exchangers, the first, second, third and fourth throttles, a gas-liquid separator, which is also used as a liquid storage device; an outdoor fan is configured; its connection method is: the air outlet of the compressor is divided into two paths, the first path is connected to the fluorine path air inlet of the first hot water heat exchanger, and the second path is connected to the first interface of the four-way valve; the first heat The fluorine circuit liquid outlet of the water heat exchanger is connected with the inlet of the first and second throttles; the outlets of the first and second throttles are respectively connected with the second interfaces of the outdoor air heat exchanger and the second hot water heat exchanger; the second interface of the outdoor air heat exchanger and the second interface of the second hot water heat exchanger are also interconnected by the fourth throttle of the refrigeration cycle and the third throttle of the heating cycle whose flow direction is determined by a one-way valve; the second, third and fourth interfaces of the four-way valve are respectively connected with the first interface of the outdoor air heat exchanger, the first interface of the second hot water heat exchanger and the air inlet of the gas-liquid separator; the air outlet of the gas-liquid separator is connected with the air inlet of the compressor; the connected circulation loop is filled with refrigerant; the interfaces are all welded, and there is no external connection pipeline with mechanical connection, forming an integrated fluorine cycle cold and hot water machine; four fluorine circuit cycles can be organized to complete three functions: making cold water for air conditioning, making hot water for heating and making hot water for daily use.

[0005] The integrated cold and hot water multifunctional machine described in the utility model is characterized in that: the water circulation heat exchange system and the hot water supply waterway include: the first and second hot water heat exchangers, the hot water tank, the first and second water pumps, the water-air heat exchanger, the hot air humidification heat exchanger, the electric three-way valve, the first and second water inlet valves, the water inlet safety pressure relief valve, and the connecting water pipe; the hot water tank is provided with the circulating water inlet and outlet interfaces and the domestic hot water inlet and outlet interfaces;

[0006] The connection mode of the water circulation heat exchange system is as follows: the outlet of the first water pump is connected to the water inlet of the first hot water heat exchanger; the outlet of the first hot water heat exchanger is connected to the circulating water inlet of the hot water tank; the circulating water outlet of the hot water tank is connected to the inlet of the electric three-way valve; the first outlet of the electric three-way valve is connected to the inlet of the first water pump and the outlet of the hot air humidification heat exchanger, and the second outlet is connected to the water inlet of the hot air humidification heat exchanger; the outlet of the second water pump is connected to the water inlet of the second hot water heat exchanger; the outlet of the second hot water heat exchanger is connected in parallel with the water inlets of several water-to-air heat exchangers by a water-to-air heat exchanger connecting pipe; the parallel pipelines of the outlets of several water-to-air heat exchangers are connected to the water inlet port of the return pipe; the outlet end of the return pipe is connected to the inlet of the second water pump; the connected circulating water exchange circuit can form three circulating water circuits to complete six functional cycles: domestic hot water cycle, air conditioning cold water cycle, heating hot water cycle, defrosting heating cycle, humidification heat exchange cycle, dehumidification and heat supplement cycle;

[0007] The hot water supply water connection and hot water supply method are: a tap water pipe, a first water inlet valve, a water inlet safety pressure relief valve, an inlet of domestic hot water connected to the bottom of the hot water tank, and a domestic hot water outlet on the top of the hot water tank connected to a hot water supply pipe. A number of hot water taps are installed on the hot water supply pipe, and hot water is supplied by tap water top pressure.

[0008] The integrated cold and hot water multifunctional machine is characterized in that the four fluorine circuit cycles organized by the integrated fluorine cycle cold and hot water machine are:

[0009] The first fluorine circuit cycle for domestic hot water: its function is to produce hot water in spring and autumn. Its fluorine circuit process is: compressor, first hot water heat exchanger to produce hot water, first throttle, outdoor air heat exchanger to absorb heat, four-way valve in heating position (②④ passage), gas-liquid separator, back to the compressor, completing the fluorine circuit cycle;

[0010] The second fluorine circuit circulation of cooling water and hot water; its function is to produce domestic hot water in summer and dehumidified cold water and supplementary hot water during dehumidification. Its fluorine circuit process is: compressor, first hot water heat exchanger, second throttle, second hot water heat exchanger, four-way valve in cooling position, (①② passage), gas-liquid separator, back to the compressor;

[0011] The third fluorine circuit cycle for making cold water for air conditioning is used to make cold water for air conditioning. Its fluorine circuit process is: compressor, four-way valve in cooling position (①② passage), outdoor air heat exchanger, fourth throttle, one-way valve D, second hot water heat exchanger, four-way valve (③④ passage), gas-liquid separator, and back to the compressor;

[0012] The fourth fluorine circuit circulation for producing heating hot water has the function of producing heating hot water, and its fluorine process is: compressor, four-way valve in heating position (①③ passages), second hot water heat exchanger, third throttle, outdoor air heat exchanger, four-way valve (②④ passages), gas-liquid separator, and returns to the compressor.

[0013] The integrated cold, warm and hot water multifunctional machine is characterized in that the three water flow paths and their functions of the water circulation heat exchange system are:

[0014] The first circulating water circuit is used for the first hot water heat exchanger and the hot water tank circulating water circuit when hot water is produced in spring and autumn. The process is: the first water pump, the first hot water heat exchanger, the hot water tank, the first outlet of the electric three-way valve, the coil of which is energized, the first water pump; cooperates with the open water circuit of domestic hot water, and is pressurized by tap water, and the hot water tank produces domestic hot water;

[0015] The second circulating water circuit has the functions of cooling water of the second hot water heat exchanger in summer and heating water of the second hot water heat exchanger in winter to provide cooling or heating to the water-air heat exchanger, and providing heating and defrosting to the second hot water heat exchanger during defrosting; its flow is: second water pump, second hot water heat exchanger, water-air heat exchanger connecting pipe, multiple water-air heat exchangers, return pipe, and flows back to the inlet of the second water pump;

[0016] The third circulating water circuit has the function of supplying hot water to the hot air humidifying heat exchanger by the first hot water heat exchanger, or supplementing the hot air humidifying heat exchanger with heat during dehumidification. Its flow is: the first water pump, the first hot water heat exchanger, the hot water tank, the second outlet of the electric three-way valve, the coil of which has no electricity, the hot water heating pipe, the hot air humidifying heat exchanger, and the inlet of the first water pump;

[0017] The water flow of domestic hot water is: tap water passes through the first water inlet valve, the water inlet safety pressure relief valve, the hot water tank, the hot water supply pipe, and the hot water faucet; or tap water passes through the first water inlet valve, the water inlet safety pressure relief valve, the domestic hot water heat exchanger coil in the hot water tank, the hot water supply pipe, and the hot water faucet; the first water inlet valve is normally open, and the tap water is discharged by top pressure.

[0018] The integrated cold and hot water multifunctional machine is characterized in that: the intelligent operation control system of the integrated cold and hot water multifunctional machine is provided with: indoor and outdoor air temperatures, compressor suction and exhaust pipe temperatures, outlet water temperature of the first hot water heat exchanger, upper hot water temperature in the hot water tank, inlet and outlet water temperatures of the second hot water heat exchanger, temperature signal detection of outlet air temperature of the water-to-air heat exchanger, indoor humidity detection, compressor current signal detection; compressor overcurrent protection and overheating protection are provided;

[0019] The described integrated multi-functional machine for heating, cooling and hot water has four operating modes according to functional requirements: hot water production, refrigeration, heating, and dehumidification. The corresponding fluorine circuit cycles, circulating water circuits, on / off conditions of electrical components, and start / stop control conditions for each mode are as follows:

[0020] The hot water production mode is an independent hot water production mode in spring and autumn. It executes the fluorine circuit cycle for the first production of domestic hot water. The four-way valve is in the heating position, and its coil is energized (connected inside ①③ and ②④). The compressor operates, and the outdoor fan operates. The water circuit executes the first circulating water circuit operation. The first water pump operates, the second water pump stops, the electric three-way valve is in the first outlet position, and its coil is energized. The fans of the hot air humidifying heat exchanger and the water-air heat exchanger stop.

[0021] Control of the hot water production mode: Automatic control is carried out based on the difference ΔTw between the water temperature Tw in the hot water tank and the set water temperature Tw0. By default, Tw0 = 45°C, the default maximum allowable deviation of water temperature fluctuation ΔTa0 = 5°C, and the safety maximum water temperature Tw,max is set. When the user manually presses a button or uses voice control to specify the "hot water" mode, first confirm or modify the value of the set water temperature Tw0, preferably within the range of 40 - 45°C. When Tw ≤ Tw0, the hot water production operation is automatically started. When Tw ≥ Tw0 + ΔTw0, the hot water production operation is automatically stopped, and the unit returns to the standby state of the hot water mode. To exit the hot water mode, an artificial intervention method is adopted, that is, press the "shutdown" button.

[0022] The refrigeration mode is a mode for producing chilled water and hot water in summer. It executes the fluorine circuit cycle for the third production of air-conditioning chilled water and the fluorine circuit cycle for the second production of chilled water and hot water. The four-way valve is in the refrigeration position, and its coil is not energized (connected inside ①② and ③④). The compressor operates, and the outdoor fan operates. The water circuit executes the first and second circulating water circuit operations. The first and second water pumps operate, the electric three-way valve is in the first outlet position, and its coil is energized. The fan of the hot air humidifying heat exchanger stops, and the fan of the water-air heat exchanger rotates. The first hot water heat exchanger produces domestic hot water. The second hot water heat exchanger produces chilled water, supplies cold water to the water-air heat exchanger, and transfers cold air.

[0023] Control of the refrigeration mode: Control is carried out based on the comparison difference between the indoor temperature Ta and the set room temperature Ta0. The water temperature in the hot water tank is not used as a control parameter. By default, Ta0 = 26°C, and adjustment is allowed. When the user manually presses a button or uses voice control to specify the "refrigeration" mode, the user first confirms or modifies the value of the set room temperature Ta0, preferably within the range of 22 - 28°C. When the room temperature Ta ≥ Ta0, the refrigeration mode operation is automatically started. The start sequence is the first and second water pumps, then the compressor, and then when the outlet water temperature of the second hot water heat exchanger drops to 12°C, the fan of the water-air heat exchanger is started. During the operation of the refrigeration mode, the water temperature in the hot water tank may exceed the maximum water temperature limit due to receiving the heat of the superheated gas, and it is left as it is. When the room temperature Ta < Ta0, the refrigeration is automatically stopped, and it is in the refrigeration standby state.

[0024] In order to obtain the best cooling effect, it is necessary to continuously detect the outlet and return water temperatures of the second hot water heat exchanger, the fan speed of the water-to-air heat exchanger, and the room temperature, and use AI learning methods to accumulate the best control methods; when the compressor and fan used are variable frequency machines, the speed of the compressor and outdoor fan is the maximum value Vmax at the beginning, and the speed gradually decreases as the room temperature drops, and runs at the minimum maintenance speed close to Ta0;

[0025] The heating mode is a winter hot water heating and air mode, which can humidify at the same time; the fourth system of heating hot water fluorine circuit circulation and the first system of domestic hot water fluorine circuit circulation are executed, the four-way valve is in the heating position, its coil is energized, (①③, ②④ are connected), the compressor is running, and the outdoor fan is running; the water circuit executes the second and third circulation water circuits, the first and second water pumps are running, the electric three-way valve is in the second outlet position, and its coil is not powered; the fans of the hot air humidification heat exchanger and the water-to-air heat exchanger are rotating; the second circulation water circuit is the heating circulation water circuit for the water-to-air heat exchanger; the third circulation water circuit is heating and humidifying for the hot air humidification heat exchanger;

[0026] Control of heating mode: control by comparing the difference between the indoor temperature Ta and the set room temperature Ta0; start-up method: user manually presses the button, or voice control specifies the "heating" mode; when the heating mode is running, first confirm or modify the set room temperature Ta0 value, it is recommended to set the room temperature Ta0 = 22℃±3℃;

[0027] When the room temperature Ta≤Ta0, the unit automatically starts the heating mode operation; the startup sequence is the first and second water pumps, the second compressor, and the second hot water heat exchanger. When the outlet water temperature is higher than 45℃, the heating fans of the water-to-air heat exchanger and the hot air humidification heat exchanger are turned on and run at medium speed; or manual intervention is adopted to start and stop the heating fan and the speed. The recommended output hot air temperature is 8℃ higher than the room temperature as the indicator for adjusting the heating fan speed; when Ta>Ta0, the heating stops automatically, the compressor and outdoor fan, water pump, and heating fan are all stopped, and it is in the heating standby state; to exit the heating mode, manual "shutdown" is adopted;

[0028] When the compressor and fan are variable frequency machines, the speed of the compressor and outdoor fan is the maximum value Vmax at the beginning, and the speed gradually decreases as the room temperature rises, and runs at the minimum maintenance speed close to Ta0;

[0029] The dehumidification mode is the dehumidification mode in the rainy season in late spring and early summer. The second refrigeration water and hot water fluorine circuit circulation is executed. The four-way valve is in the cooling position, its coil is without electricity, the compressor is running, and the outdoor fan is stopped; the water circuit executes the second and third circulation water circuits, the first and second water pumps are running, the electric three-way valve is in the second outlet position, its coil is without electricity, the fan of the water-to-air heat exchanger rotates at a low speed, and the fan of the hot air humidification heat exchanger rotates; the second circulation water circuit is to send cold water to the water-to-air heat exchanger for dehumidification; the third circulation water circuit is a circulation water circuit that supplements heat to the hot air humidification heat exchanger during dehumidification;

[0030] Dehumidification mode control, manually specify dehumidification mode operation, the default refrigeration setting temperature is lower than 22℃, it will automatically switch to dehumidification mode operation, and it will stop when human intervention; the advanced type can detect the humidity of the indoor air, when the temperature is lower than 26℃ and the relative humidity is greater than 60%, it will start the dehumidification mode; when the relative humidity is less than 50%, it will stop automatically;

[0031] In the defrost mode, when frost forms on the outdoor air heat exchanger during the winter heating cycle, a reverse heating cycle is used to execute the fluorine circuit cycle of the third air-conditioning cold water and the fluorine circuit cycle of the second cooling water and hot water. The four-way valve is in the cooling position, the compressor is running, and the outdoor fan is stopped; the water circuit executes the second and third water circuits, the first and second water pumps are running, the electric three-way valve is at the second outlet, and its coil is without electricity; the fans of the hot air humidification heat exchanger and the water-to-air heat exchanger are stopped; during the defrost cycle, the exhaust gas entering the outdoor air heat exchanger is condensed due to defrosting;

[0032] Control of defrost mode: Startup conditions: During heating mode operation, when the outdoor air heat exchanger is severely frosted, that is, the temperature difference between the outdoor temperature and the outdoor air heat exchanger tube wall temperature suddenly exceeds the set value, the control system issues a defrost command and the unit enters the defrost mode; when the coil temperature of the outdoor air heat exchanger is greater than or equal to 8°C, the defrost mode operation is automatically stopped, and the unit is shut down for 1-3 minutes to wait for the pressure of the fluorine refrigerant circuit to be balanced, and then the heating mode operation is restarted;

[0033] Control of fully automatic mode: implement the principle of hot water priority, followed by temperature, and then humidity, that is, among the four modes of hot water, cooling, heating, and dehumidification, the hot water mode is implemented first; then, the cooling or heating mode is selected according to the comparison value between the room temperature and the default room temperature setting; in the temperature range of the heating default setting temperature of 22℃ and the cooling default setting temperature of 26℃, when the relative humidity is greater than 60%, the dehumidification mode is started; when the relative humidity is less than 50%, it is stopped. During the dehumidification period, the room temperature is allowed to fluctuate between 22℃-26℃ without control.

[0034] The integrated cold and hot water multifunctional machine is characterized in that: the hot air humidifying heat exchanger is a hot air humidifying heat exchanger modified from a water-to-air heat exchanger, and a wet mesh cloth, a water storage tank and a water supply pipeline are added to the thin rectangular box air duct of the water-to-air heat exchanger; the humidification principle is to use the hot water pipe of the water-to-air heat exchanger to heat the wet cloth and the hot air to blow through the wet mesh or wet cloth to bring water vapor into the room; when the indoor relative humidity φ<50%, the humidification is started, and when the relative humidity φ≥50%, the humidification is stopped; according to the indoor relative humidity φ and the set value of the relative humidity φ 0 The size of the difference △φ is adjusted by adjusting the opening frequency of the water replenishment valve to control the humidification water replenishment amount.

[0035] The integrated cooling and heating hot water multifunctional machine is characterized in that: the compressor, four-way valve, outdoor air heat exchanger, first and second hot water heat exchangers, first, second, third and fourth throttles, gas-liquid separator, also used as a liquid storage device, of the integrated fluorine cycle cooling and heating hot water machine are all installed in the outdoor machine body, and the joints of each pipeline are welded, the fluorine circuit is a closed integrated type, and there is no detachable connecting pipe of the indoor and outdoor units of the traditional cooling and heating air conditioner; the first and second hot water heat exchangers are plate heat exchangers or sleeve heat exchangers; the first and second water pumps and the electric three-way valve of the water circulation heat exchange system are also installed in the outdoor machine body; the outdoor machine body only has three sets of circulating water circuit external interfaces, which are respectively connected to the hot water tank, indoor The installed water-to-air heat exchanger and hot air humidification heat exchanger are connected with the water inlet and outlet interfaces, specifically: the water outlet of the first hot water heat exchanger of the first circulating water circuit and the water inlet interface of the electric three-way valve are connected with the circulating water inlet and outlet interfaces of the hot water tank; the water inlet interface of the second water pump of the second circulating water circuit and the water outlet interface of the second hot water heat exchanger are connected with the inlet and outlet ports of the water-to-air heat exchanger inlet and outlet main pipes; the second outlet of the electric three-way valve of the third circulating water circuit and the three-way interface of the first outlet of the electric three-way valve connected to the inlet of the first water pump are connected with the water inlet and outlet interfaces of the hot air humidification heat exchanger; the hot water tank is arranged outdoors or indoors according to the specific situation of the customer, and the water-to-air heat exchanger and the hot air humidification heat exchanger are arranged indoors.

[0036] The integrated cold, warm and hot water multifunctional machine is characterized in that: when the compressor of the integrated cold, warm and hot water multifunctional machine is a variable frequency compressor, the third throttle is an electronic expansion valve, a domestic hot water heat exchanger coil is added in the hot water tank, the control method is equipped with voice control and remote intelligent control system, and the integrated cold, warm and hot water multifunctional machine with AI full-automatic control is named as the top-level integrated cold, warm and hot water multifunctional machine; when the compressor is a fixed frequency compressor, the first, second, third and fourth throttles are all capillary throttles, a domestic hot water heat exchanger coil is added in the hot water tank, and the integrated cold, warm and hot water multifunctional machine with manual and semi-automatic control is adopted. machine, it is called an advanced integrated cold, heating and hot water multifunctional machine; when the hot water tank of the advanced integrated cold, heating and hot water multifunctional machine is not equipped with a domestic hot water heat exchanger coil, it is a universal integrated cold, heating and hot water multifunctional machine; when the universal integrated cold, heating and hot water multifunctional machine is not equipped with a hot air humidification heat exchanger, and the hot air humidification heat exchanger and the dehumidification and heat supplement system are cancelled, it is downgraded to a simple integrated cold, heating and hot water multifunctional machine; the top-level, advanced, universal and simple integrated cold, heating and hot water multifunctional machines all have the three functions of cooling water air conditioning and hot water production in summer, hot water heating in winter, and energy-saving and hot water production in all seasons.

[0037] The innovative features of this utility model mainly include:

[0038] 1. The integrated cooling and heating hot water multifunctional machine described in the utility model is a multifunctional, highly efficient and energy-saving cooling and heating air-conditioning four-season hot water machine, and its core part is an integrated fluorine cycle cooling and heating hot water machine; the integrated fluorine cycle cooling and heating hot water machine has three heat exchangers: an outdoor air heat exchanger and a first and a second hot water heat exchanger. Only one four-way valve and four throttles are used to organize four cycles and realize three functions: cooling water and making hot water in summer, absorbing heat from outdoor air to make hot water in spring and autumn, and making hot water for heating and domestic hot water in winter; the four fluorine circuit cycles with three functions are: two independent hot water making cycles with the first hot water heat exchanger as condenser and the outdoor air heat exchanger and the second hot water heat exchanger as evaporators, and two cycles of cooling water and hot water with the outdoor air heat exchanger and the second hot water heat exchanger as evaporators and condensers respectively; the design innovation is that the air outlet of the compressor is divided into two routes, which are respectively connected to the air outlet of the compressor and the air outlet of the compressor. The newly added air inlet of the first hot water heat exchanger is connected to the inlet of the four-way valve, and the liquid outlet at the bottom of the first hot water heat exchanger is connected to the second interface of the outdoor air heat exchanger and the second hot water heat exchanger through the first and second throttles, respectively, producing three unexpected effects: (1) The condensate of the first hot water heat exchanger passes through the two throttles and automatically selects the throttling path by virtue of the pressure difference between the compressor outlet and the outdoor air heat exchanger and the second hot water heat exchanger used as evaporators, cleverly forming a hot water circulation in which the second hot water heat exchanger or the outdoor air heat exchanger is the evaporator and the first hot water heat exchanger is the condenser, without the need for additional valve control; (2) Regardless of whether the integrated fluorine cycle cold and hot water machine performs the circulation of cooling water or heating hot water, it can produce domestic hot water; (3) The compressor outlet remains connected to the first interface of the four-way valve, thus maintaining the cooling and heating functions of the original cold and heating air conditioner.

[0039] 2. The integrated cooling, heating and hot water multifunctional machine described in the utility model adopts an integrated design and a fluorine circuit circulation loop system, and has no additional movable connecting pipes to connect to the indoor fluorine-air heat exchanger, thereby avoiding fluorine leakage from the separate connecting valves of the indoor and outdoor units of traditional cooling and heating air conditioners, reducing the maintenance of cooling and heating air conditioners, and can achieve no fluorine leakage for more than ten years; in addition, the closed fluorine circuit circulation system can be filled with optimized fluorine dosage in the factory, and the product quality is guaranteed.

[0040] 3. The integrated cold and hot water multifunctional machine described in the utility model is designed with a water circulation heat exchange system, which realizes six functions through three circulation water circuits: the first circulation water circuit is the first hot water heat exchanger and the hot water tank circulating to make hot water, which can make hot water in various modes, ensuring the heat source of hot water for life in all seasons is one of the core technologies of the utility model; the second circulation water circuit can realize the two functions of the second hot water heat exchanger cooling water or making hot water to the water-air heat exchanger for cooling cycle or heating cycle, and the defrosting cycle for heating the second hot water heat exchanger; the third circulation water circuit is the first hot water heat exchanger making hot water, and the hot water tank and The hot air humidification heat exchanger provides hot water circulation, and has two functions: providing heat and humidification during heating and supplementing heat during dehumidification. These new functions are all dependent on the addition of a first hot water heat exchanger, a water-to-air heat exchanger and a hot air humidification heat exchanger. The combination of the four circulations of the fluorine circuit and the three water circuits produces the following special functions: (1) The first hot water heat exchanger can produce hot water in a heat pump energy-saving manner in all operating modes, saving 75% energy and providing domestic hot water for use in all seasons; (2) In spring, dehumidification is carried out by replenishing the heat generated by dehumidification to the heat lost during dehumidification in the room; (3) In summer, cooling is carried out by using the cold water generated by the second hot water heat exchanger to deliver the cold water to the water-to-air heat exchanger in each room. (4) For heating in winter, the hot water generated by the second hot water heat exchanger is sent to the water-to-air heat exchanger in each room to blow warm air, which spreads the heating range and evens out the indoor temperature; (5) In winter, the air humidity in the heated room in the north is too low, which is not good for health. The first hot water heat exchanger circulates hot water for the hot air humidification heat exchanger to humidify the room with the hot air; (6) During defrosting, the hot water in the water circulation heat exchange system is used to heat the second hot water heat exchanger used as an evaporator in the defrosting circulation loop, providing defrosting heat, which completely solves the defrosting problem of the heating and cooling air conditioner and overcomes the problem of traditional air conditioners in winter. The problem of not being able to absorb heat from the indoor room during the defrost cycle is solved, which is energy-saving and safe. The reverse cycle defrosting method commonly used in traditional air source heat pumps cannot obtain heat for the liquid refrigerant entering the indoor fluorine-air heat exchanger, so it can only be defrosted by the heat generated by the compression work of the rapid operation of the compressor. The utility model uses the second hot water heat exchanger to serve as an evaporator during defrosting, and uses the heat of hot water in the hot water tank to defrost, which is equivalent to energy storage defrosting. The energy cost is only 1 / 3 of the electrical energy (compression work), and the defrosting speed is fast, which is a guarantee breakthrough for the safe and efficient operation of the heat pump in winter. The above 6 points are original and great contributions in the field of air-conditioning heat pump water heaters.

[0041] 4. The integrated cold, warm and hot water multifunctional machine described in the utility model has a distinctive feature that it can cool water and heat water at the same time, that is, by utilizing the first hot water heat exchanger as a condenser and the second hot water heat exchanger as an evaporator, it can cool water and hot water. The cold water produced by the second hot water heat exchanger can be used as cold water for air conditioning and as a cold source for dehumidification, while the hot water produced by the first hot water heat exchanger can be used for bathing and can replenish the damp and cold room during dehumidification. This is a wonderful energy matching use.

[0042] 5. The integrated hot and cold water multifunctional machine described in the utility model adopts a hot water heating method using a water-to-air heat exchanger with a wind wheel for forced heat dissipation. It has four contributions: (1) It ensures that the heat transfer temperature zone of the water-to-air heat exchanger matches the hot water temperature zone of the air source heat pump. The hot water is 50°C and the return water is 42°C, so that a new heating method of the air source heat pump that replaces the floor heating method can be realized. Compared with floor heating, the water-to-air heat exchanger heating is much simpler, and the cost and installation fee are less than 1 / 4 of that of floor heating; (2) It changes the heating method of the traditional hot air blowing ceiling in the fixed area of ​​the air conditioner, and extends the water-to-air heating system to multiple rooms. Heat exchanger heating, the water-to-air heat exchanger is installed like a radiator, with the air outlet less than 1 meter from the ground. It uses a centrifugal fan to dissipate heat, has low noise, and its heat transfer capacity is several times stronger than that of a radiator, and has the advantage of centrally transferring heat to different places where it is needed; (3) The hot water-water-to-air heat exchanger heating method has a moderate heat capacity and can adjust the heating time according to a humanized time, which is more energy-saving than the long-term operation of floor heating; (4) Compared with the one-machine-multiple-drag fluorine-path heating method and the floor heating method, the heating method of the integrated hot and cold water multifunctional machine of the utility model is simple, low-cost, easy to control, and comfortable.

[0043] 6. The integrated cold, hot and water multifunctional machine described in the utility model includes top-level, advanced, general and simple integrated cold, hot and water multifunctional machines, which can meet the needs of different consumer groups; placing a domestic hot water heat exchanger coil in the hot water tank isolates the water in the circulating heat exchange pipeline from the domestic hot water, which can ensure that the domestic hot water is always fresh, clean and hygienic; the water circulation heat exchange system is filled with softened water or purified water, which prevents scaling on the surface of the heat exchanger of the water circulation heat exchange system, thereby ensuring a longer working life of the heat exchanger.

[0044] 7. The most outstanding advantage of the integrated cold, warm and hot water multifunctional machine described in the utility model is that it has obvious energy-saving effect. In summer, it can perform cooling and hot water production at the same time. The obtained hot water is completely free. The longer the summer, the more benefits the area will get. In spring and autumn, the water-heating mode using outdoor heat can save 70-75% of electricity compared with electric water heaters. It has multi-mode energy-saving operation, and the defrosting mode in winter is effective and energy-saving. The annual average COP of the unit for hot water production is greater than 5.5. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1This is the integrated cold, warm and hot water multifunctional machine described in the utility model, embodiment 1, the basic structure of a universal integrated cold, warm and hot water multifunctional machine and an illustration of the fluorine circuit circulation and water circuit circulation for executing the hot water mode.

[0046] Figure 2 This is an illustration of embodiment 1 of the utility model, a universal integrated cold, warm and hot water multifunctional machine, which executes the fluorine circuit circulation and water circuit circulation in the cooling mode.

[0047] Figure 3 This is an illustration of embodiment 1 of the utility model, a universal integrated cold, warm and hot water multifunctional machine, which executes the fluorine circuit circulation and water circuit circulation in the heating mode.

[0048] Figure 4 This is an illustration of the fluorine circuit circulation and water circuit circulation of the universal integrated hot and cold water multifunctional machine in the dehumidification mode according to the first embodiment of the utility model.

[0049] Figure 5 Embodiment 1 of the present invention is a universal integrated cold, warm and hot water multifunctional machine, which is an illustration of the fluorine circuit circulation and water circuit circulation in the defrost mode.

[0050] Figure 6 This is Example 2 of the utility model, an illustration of the basic structure of an advanced all-in-one cold, warm and hot water multifunctional machine and the fluorine circuit circulation and water circuit circulation for executing the cooling mode. Compared with Example 1, a domestic hot water heat exchanger coil in the hot water tank is added.

[0051] Figure 7 This is the basic structure of the top-level integrated cold, warm and hot water multifunctional machine of the utility model, and the illustration of the fluorine circuit circulation and water circuit circulation in the refrigeration mode. Compared with the high-level type of the embodiment 2, Figure 7 The visible difference is that the third throttle in the fluorine circuit is an electronic expansion valve.

[0052] Figure 8 This is a diagram showing the basic structure of a simple integrated cold, warm and hot water multifunctional machine and the fluorine circuit circulation and water circuit circulation in the refrigeration mode. Compared with the general type in the first embodiment, Figure 8 The hot air humidification heat exchanger is removed, and the hot air humidification heat exchanger and the dehumidification and heating system are cancelled.

[0053] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings, but the present invention is not limited thereto. DETAILED DESCRIPTION

[0054] The integrated cold and warm hot water multifunctional machine described in the utility model is a multifunctional, highly efficient and energy-saving cold and warm air-conditioning and four-season hot water machine, which has the three functions of cooling water air conditioning and hot water production in summer, hot water production for heating in winter, and energy-saving hot water production in four seasons; the following introduces four types of integrated cold and warm hot water multifunctional machines, namely, general type, advanced type, top type and simple type. The fluorine circuit structure and connection method of the integrated fluorine cycle cold and warm hot water machines of the four types of integrated cold and warm hot water multifunctional machines are the same, and the difference mainly lies in the different configurations of the water circulation heat exchange systems; the basic structure and connection method of the integrated fluorine cycle cold and warm hot water machine of the integrated cold and warm hot water multifunctional machine of the utility model, as well as the fluorine circuit circulation circuit process of its hot water production, cooling, heating, dehumidification and defrosting modes, are described by the general type of integrated cold and warm hot water multifunctional machine of Example 1, see Figure 1 , 2 , 3, 4, 5.

[0055] See also Figure 1 The integrated fluorine cycle cold and hot water machine of the integrated cold and hot water multifunctional machine of embodiment 1 comprises: a compressor 1, a four-way valve 2, an outdoor air heat exchanger 3, a first and a second hot water heat exchanger 4, 5, a first, a second, a third, and a fourth throttle J1, J2, J3, and J4, and a gas-liquid separator 6, which is also used as a liquid storage device; its connection method is: the air outlet of the compressor 1 is divided into two paths, the first path is connected to the fluorine path air inlet of the first hot water heat exchanger 4, and the second path is connected to the first interface of the four-way valve 2 ( Figure 1 The fluorine liquid outlet of the first hot water heat exchanger 4 is connected to the inlet of the first and second throttles J1 and J2; the outlet of the first throttle J1 is connected to the second interface of the outdoor air heat exchanger 3; the outlet of the second throttle J2 is connected to the second interface of the fluorine circuit of the second hot water heat exchanger 5, and the inlet of the third throttle J3, and the outlet of the fourth throttle J4 is connected to each other through the one-way valve D; the second, third and fourth interfaces of the four-way valve 2, ( Figure 1 The interfaces ②, ③, and ④ marked in the figure are respectively connected to the first interface of the outdoor air heat exchanger, the first interface of the fluorine circuit of the second hot water heat exchanger 5, and the air inlet of the gas-liquid separator 6; the outlet of the third throttle J3 and the inlet of the fourth throttle J4 are connected to the second interface of the outdoor air heat exchanger 3; the air outlet of the gas-liquid separator 6 is connected to the air inlet of the compressor; the connected circuit is filled with refrigerant; the interfaces are all welded, and there is no mechanically connected external pipeline to form an integrated fluorine cycle cold and warm water heater; the four fluorine circuit cycles that can complete three functions: making cold water for air conditioning, making hot water for heating, and making domestic hot water are:

[0056] Fluorine circuit circulation for the first domestic hot water system, see Figure 1, the function is to make hot water in spring and autumn, and the fluorine circuit process is: compression, 1, the first hot water heat exchanger 4 makes hot water, the first throttle J1, the outdoor air heat exchanger 3 absorbs heat, the four-way valve 2 is in the heating position (②④ passage), the gas-liquid separator 5, returns to the compressor 1, and completes the fluorine circuit cycle;

[0057] Second fluorine circuit circulation of cooling water and hot water; see Figure 2 The function is to produce domestic hot water in summer and dehumidified cold water and supplementary hot water during dehumidification. The fluorine circuit process is: compressor 1, the first hot water heat exchanger 4 to make hot water, the second throttle J2, the second hot water heat exchanger 5 to cool water, the four-way valve 2 is in the cooling position (①② passage), the gas-liquid separator 6, and returns to the compressor 1;

[0058] For the fluorine circuit circulation of the third air conditioning cold water, see Figure 2 , the function is to make cold water for air conditioning, and the fluorine circuit process is: compressor 1, four-way valve 2 in the cooling position (①② passage), outdoor air heat exchanger 3 releases heat, the fourth throttle J4, the one-way valve D, the second hot water heat exchanger 5 cools water, the four-way valve 2 (③④ passage), the gas-liquid separator 6, and returns to the compressor 1;

[0059] The fourth system of heating hot water fluorine circuit circulation, see Figure 3 , its function is to produce hot water for heating, and its fluorine process is: compressor 1, four-way valve 2 (heating position, ①③ passages), the second hot water heat exchanger 5, the third throttle J3, the outdoor air heat exchanger 3, four-way valve 2 (②④ passages), gas-liquid separator 6, and back to compressor 1.

[0060] The water circulation heat exchange system and domestic hot water system of the universal integrated cold and hot water multifunctional machine are composed of the embodiment 1 Figure 1-5 Description, its composition includes: the water circuit of the first and second hot water heat exchangers 4 and 5, the hot water tank 7, the first and second water pumps 8 and 9, the electric three-way valve 10, the hot air humidifying heat exchanger 11, the water-air heat exchanger 12, 13, 14, the hot water circulation pipe L1, the water-air heat exchanger connecting pipe L2, the hot water heating pipe L3, the return pipe L4, the hot water supply pipe L5, the domestic hot water inlet valve Z1, the water inlet safety pressure relief valve 15, the second inlet valve Z2, the inlet pipe, the drain pipe valve 16, and the hot water tap 17; the hot water tank 7 is provided with the inlet and outlet interfaces of the circulating water and the inlet and outlet interfaces of the domestic hot water; the inlet interface of the circulating water is in the middle and upper part of the hot water tank, and the outlet interface is in the middle and lower part of the hot water tank; the inlet of the domestic hot water is at the bottom of the hot water tank, and the outlet is at a height of 10-20 cm from the top of the hot water tank;

[0061] For connection methods, see Figure 1-5: The outlet of the first water pump 8 is connected to the water inlet of the first hot water heat exchanger 4; the water outlet of the first hot water heat exchanger is connected to the circulating water inlet of the hot water tank 7; the circulating water outlet of the hot water tank is connected to the inlet of the electric three-way valve 10; the first and second outlets (①, ②) of the electric three-way valve are respectively connected to the inlet of the first water pump 8 through the hot water circulation pipe L1 and the water inlet of the hot air humidification heat exchanger 11 through the hot water heating pipe L3; the water outlet of the hot air humidification heat exchanger 11 is connected to the inlet of the first water pump 8; the outlet of the second water pump 9 is connected to the water inlet of the second hot water heat exchanger 5; the water outlet of the second hot water heat exchanger is connected to the water inlet of the second hot water heat exchanger 5 through the water-air heat exchanger connecting pipe L2 The water inlets of the water-to-air heat exchangers 12, 13, and 14 are connected in parallel; the parallel pipelines of the water outlets of the water-to-air heat exchangers are connected to the water inlet port of the return pipe L4; the outlet end of the return pipe is connected to the inlet of the second water pump 9; the inlet and outlet pipes of the hot air humidification heat exchanger and the water-to-air heat exchanger are equipped with manual stop valves 11a, 11b and 12a, 12b, 13a, 13b, 14a, 14b for easy maintenance; the branch of the return pipe L4 at the inlet of the second water pump is connected to the second water inlet valve Z2, and the inlet of the second water inlet valve Z2 is reserved for filling with softened water; the drain valve 16 of the water circulation heat exchange system is connected to the branch drain pipe of the return pipe L4;

[0062] The hot water supply water connection and hot water supply method are: a tap water pipe, a first water inlet valve Z1, a water inlet safety pressure relief valve 15, connected to the domestic hot water inlet at the bottom of the hot water tank 7, and the domestic hot water outlet at the top of the hot water tank is connected to the hot water supply pipe. Several hot water faucets are installed on the hot water supply pipe, and hot water is supplied by tap water top pressure.

[0063] The connected water circulation heat exchange system, the connected circulating water exchange circuit can form three circulating water circuits, completing six functional cycles: domestic hot water cycle, air conditioning cold water cycle, heating hot water cycle, defrosting heating cycle, humidification heat exchange cycle, dehumidification heat supplement cycle; the processes and functions of the three circulating water circuits are:

[0064] The first water circuit is used to make hot water in spring and autumn. Figure 1 The process is as follows: the first water pump 8, the first hot water heat exchanger 4 makes hot water, the hot water tank 7, the first outlet of the electric three-way valve 10, the coil of which is energized, the first water pump 8; cooperates with the open water channel of domestic hot water, is pressurized by tap water, and the hot water tank 7 outputs domestic hot water;

[0065] The second circulating water circuit has the function of cooling water for the second hot water heat exchanger in summer and heating water for the second hot water heat exchanger 5 in winter to provide cooling or heating for the water-air heat exchanger, and also provides heating and defrosting for the second hot water heat exchanger during defrosting; see Figure 2 , 3, 5, the process is: the second water pump 9, the second hot water heat exchanger 5 cools the water or hot water, the water-air heat exchanger connecting pipe L2, the multiple water-air heat exchangers 12, 13, 14 cool the air or warm the air, the return pipe L4, flows back to the inlet of the second water pump 9;

[0066] The third circulating water circuit is used to supply hot water to the hot air humidification heat exchanger by using the hot water produced by the first hot water heat exchanger, or to supplement the heat to the hot air humidification heat exchanger during dehumidification. Figure 3 , 4 , the process is: first water pump 8, first hot water heat exchanger 4 to make hot water, hot water tank 7, second outlet of electric three-way valve 10, its coil is without electricity, hot water heating pipe L3, hot air humidification heat exchanger 11, first water pump 8 inlet;

[0067] The components and connection sequence of the domestic hot water system are: a tap water pipe, a first water inlet valve Z1, a water inlet safety pressure relief valve 15, a hot water tank 7, a hot water supply pipe L5 and a plurality of hot water taps 17 installed thereon; the hot water in the hot water tank is pushed out by the tap water top pressure water discharge method;

[0068] Figure 1 The small circle "○" on the intermediate water circuit is the location where the three circulating water circuits installed on the outdoor unit connect with the hot water tank, water-to-air heat exchanger, and hot air humidification heat exchanger, namely: the outlet of the first hot water heat exchanger, the inlet of the first and second water pumps, the inlet and second outlet of the electric three-way valve, and the outlet of the second hot water heat exchanger, a total of 6 interfaces.

[0069] The integrated hot and cold water multifunctional machine is provided with the following temperature signal detections: indoor and outdoor air temperatures T1 and T2, compressor suction and exhaust pipe temperatures T3 and T4, outlet water temperature T5 of the first hot water heat exchanger, water temperature T6 of the upper hot water tank, inlet and outlet water temperatures T7 and T8 of the second hot water heat exchanger, outlet air temperature T9 of the water-to-air heat exchanger, see Example 1 Figure 1-5 ; The indoor humidity detector is arranged at the air inlet of the water-to-air heat exchanger and is equipped with compressor current signal detection, air conditioner overcurrent protection and overheating protection;

[0070] The integrated hot and cold water multifunctional machine is provided with four operation modes according to functional requirements: hot water making, cooling, heating, and dehumidification mode. The fluorine circuit circulation, circulating water circuit, and start and stop conditions of the electrical components corresponding to the several operation modes, and the start and stop control conditions of the modes are shown in Example 1. Figure 1-5 , respectively:

[0071] Figure 1It is the hot water making mode of embodiment 1, which is an independent hot water making mode in spring and autumn; it executes the first fluorine circuit cycle for making domestic hot water, and its fluorine circuit process is: compressor 1, first hot water heat exchanger 4 makes hot water, first throttle J1, outdoor air heat exchanger 3 absorbs heat, four-way valve 2 is in the heating position (②④ passage), gas-liquid separator 6, returns to the compressor, and completes the fluorine circuit cycle; the start and stop conditions of the fluorine circuit electrical components: the four-way valve is in the heating position, and its coil is energized (①③, ②④ are connected); the compressor 1 is running, and the outdoor fan 3a is running; the water circuit executes the first circulating water circuit operation, and its process is: the first water pump 8, the first hot water heat exchanger 4 makes hot water, the hot water tank 7, the first outlet of the electric three-way valve 10, its coil is energized, and flows back to the first water pump; the start and stop conditions of the water circuit electrical components: the first water pump is running, the second water pump is stopped, and the fans of the hot air humidification heat exchanger and the water-air heat exchanger are stopped;

[0072] When executing the hot water mode, although the outlet of the compressor 1 is connected to the inlet (①) of the four-way valve 2, the high-pressure refrigerant can enter the fluorine path of the second hot water heat exchanger 5 through the (①③) path of the four-way valve 2, but because the second water pump 9 is stopped, the second hot water heat exchanger 5 does not exchange heat, and the third throttle J3 capillary tube blocks the gas refrigerant, so this path is blocked; in the hot water mode, the first hot water heat exchanger collects all the heat pump heating capacity;

[0073] Control of hot water mode: automatic control based on the difference △Tw between the water temperature Tw of the heat box and the set water temperature Tw0; default Tw0=45℃, default maximum allowable deviation of water temperature fluctuation △Ta0=5℃, default maximum safe water temperature Tw,max=55℃; user manually presses button or voice control to specify "hot water" mode, first confirm or modify the set water temperature Tw0 value, recommended within the range of 40-45℃; when Tw≤Tw0, hot water operation starts automatically; when Tw≥Tw0+△Tw0, hot water operation stops automatically and the unit resumes the standby state of hot water mode; to exit hot water mode, human intervention is adopted, that is, touching the "shutdown" button.

[0074] Figure 2It is an explanatory diagram of the refrigeration mode of Embodiment 1, which is the summer refrigeration water and hot water production mode; it executes the fluorine circuit cycle for producing air-conditioning cold water in the third stage and the fluorine circuit cycle for producing refrigeration water and hot water in the second stage; the fluorine circuit process for producing air-conditioning cold water is as follows: compressor 1, four-way valve 2 in the refrigeration position (①② passage), outdoor air heat exchanger 3 releases heat, fourth throttle valve J4, check valve D, second hot water heat exchanger 5 for refrigeration water, four-way valve 2 (③④ passage), gas-liquid separator 6, and returns to the compressor; the fluorine circuit process for producing domestic hot water in the second stage is as follows: compressor, first hot water heat exchanger 4 for producing hot water, second throttle valve J2, second hot water heat exchanger 5 for refrigeration water, four-way valve 2 in the refrigeration position (①② passage), gas-liquid separator, and returns to the compressor; the on-off situation of fluorine circuit electrical components: four-way valve 2 is in the refrigeration position, its coil is de-energized, (①② and ③④ are internally connected), compressor 1 operates, outdoor fan 3a operates; the water circuit executes the first and second circulating water circuit operations; the first circulating water circuit process is as follows: first water pump 8, first hot water heat exchanger 4 for producing hot water, hot water tank 7, first outlet of electric three-way valve 10, its coil is energized, first water pump; the second circulating water circuit process is as follows: second water pump 9, second hot water heat exchanger 5 for refrigeration water or hot water, water-air heat exchanger connecting pipe L2, multiple water-air heat exchangers 12, 13, 14 for refrigerating gas or warm air, return pipe L4, and flows back to the inlet of second water pump 9; the on-off situation of water circuit electrical components: first and second water pumps 8, 9 operate, electric three-way valve 10 is in the first outlet position, its coil is energized; the fan of hot air humidifying heat exchanger 11 stops, and the fans of water-air heat exchangers 12, 13, 14 rotate; first hot water heat exchanger 4 produces domestic hot water; second hot water heat exchanger 5 produces refrigeration water, supplies cold water to the water-air heat exchanger, and transfers cold air.

[0075] Control of the refrigeration mode: It is controlled by the comparison difference between the indoor temperature Ta and the set room temperature Ta0, and the water temperature of the hot water tank is not used as a control parameter; by default, Ta0 = 26 °C, and adjustment is allowed; the user can use the manual button or voice control to specify the "refrigeration" mode; the user first confirms or modifies the value of the set room temperature Ta0, and it is recommended to be within the range of 22 - 28 °C; when the room temperature Ta ≥ Ta0, the refrigeration mode is automatically started; the startup sequence is the first and second water pumps, then the compressor, and when the outlet water temperature of the second hot water heat exchanger drops to 12 °C, the fan of the water-air heat exchanger is started; during the operation of the refrigeration mode, the water temperature of the hot water tank will exceed the maximum water temperature limit due to receiving the heat of the superheated gas, and let it be natural; when the room temperature Ta < Ta0, the refrigeration is automatically stopped and it is in the refrigeration standby state.

[0076] In order to obtain the best refrigeration effect, it is necessary to continuously detect the outlet and return water temperatures of the second hot water heat exchanger, the fan speed of the water-air heat exchanger, and the room temperature, and use the AI learning method to accumulate the best control methods; when the compressor and fan used are variable frequency machines, the rotational speeds of the compressor and the outdoor fan are at the maximum value Vmax initially, and gradually decrease as the room temperature drops, and operate at the minimum maintenance speed when approaching Ta0.

[0077] Figure 3 It is an explanatory diagram of the heating mode of Example 1, which is a winter heating air and hot water heating air mode, and can be operated in a humidifying state at the same time, executing the fluorine circuit cycle of the fourth heating hot water system and the fluorine circuit cycle of the first domestic hot water system; the fluorine circuit process of the fourth heating hot water system is: compressor 1, four-way valve 2 is in the heating position (①③ passage), the second hot water heat exchanger 5 heats the hot water, the third throttle J3, the outdoor air heat exchanger 3 absorbs heat, the four-way valve 2 (②④ passage), the gas-liquid separator 6, returns to the compressor 1; the fluorine circuit process of the first domestic hot water system is: compressor 1, the first hot water heat exchanger 4 makes hot water, the first throttle J1, the outdoor air heat exchanger 3 absorbs heat, the four-way valve 2 is in the heating position (②④ passage), the gas-liquid separator 6, returns to the compressor, and the fluorine circuit cycle is completed; the start and stop conditions of the fluorine circuit electrical components: the four-way valve 2 is in the heating position, the coil is energized (①③, ②④ are connected), the compressor 1 is running, The outdoor fan 3a is running; the water circuit executes the second and third circulation water circuits; the second circulation water circuit is: the second water pump 9, the second hot water heat exchanger 5 cools water or hot water, the water-to-air heat exchanger connecting pipe L2, multiple water-to-air heat exchangers 12, 13, 14 cool air or warm air, the return pipe L4, and flows back to the inlet of the second water pump 9; the third circulation water circuit is: the first water pump 8, the first hot water heat exchanger 4 makes hot water, the hot water tank 7, the second outlet of the electric three-way valve 10, its coil has no electricity, the hot water heating pipe, the hot air humidification heat exchanger, and the first water pump inlet; the start and stop of the water circuit electrical components: the first and second water pumps 8 and 9 are running, the electric three-way valve 10 is at the second outlet position, and its coil has no electricity; the fans of the hot air humidification heat exchanger 11 and the water-to-air heat exchangers 12, 13, 14 are rotating; the second circulation water circuit is a heating circulation water circuit for the water-to-air heat exchanger; the third circulation water circuit is a heating and humidification circulation water circuit for the hot air humidification heat exchanger;

[0078] Control of heating mode: control by comparing the difference between the indoor temperature Ta and the set room temperature Ta0; start-up method: user manually presses the button, or voice control specifies the "heating" mode; when the heating mode is running, first confirm or modify the set room temperature Ta0 value, it is recommended to set the room temperature Ta0 = 22℃±3℃;

[0079] When the room temperature Ta≤Ta0, the unit automatically starts the heating mode; the startup sequence is the first and second water pumps, the second compressor, and the second hot water heat exchanger. When the outlet water temperature is higher than 45℃, the heating fan of the water-to-air heat exchanger and the hot air humidification heat exchanger is turned on and runs at medium speed; or manual intervention is adopted to start and stop the indoor fan and the heating fan and the speed. The recommended output hot air temperature is 8℃ higher than the room temperature as the indicator for adjusting the fan speed; when Ta>Ta0, the heating stops automatically, the compressor and outdoor fan, water pump, and heating fan are all stopped, and it is in the heating standby state; to exit the heating mode, manual "shutdown" is adopted;

[0080] When the compressor and fan are variable frequency machines, the speed of the compressor and indoor and outdoor fans is initially at the maximum value Vmax. As the room temperature rises, the speed gradually decreases and runs at the minimum maintenance speed close to Ta0.

[0081] The universal integrated cold and hot water multifunctional machine of embodiment 1 is equipped with a hot air humidification heat exchanger 11; the hot air humidification heat exchanger is a hot air humidification heat exchanger modified from a water-to-air heat exchanger, in which a wet mesh cloth, a water storage tank and a water supply pipeline are added to the thin rectangular box air duct of the water-to-air heat exchanger; the humidification principle is to use the hot water pipe of the water-to-air heat exchanger to heat the wet cloth and the hot air to blow through the wet mesh or wet cloth to bring water vapor into the room; when the indoor relative humidity φ<50%, the humidification is started, and when the relative humidity φ≥50%, the humidification is stopped; according to the indoor relative humidity φ and the set value φ of the relative humidity 0 The size of the difference △φ is adjusted by adjusting the opening frequency of the water supply valve on the water supply pipe to control the humidification water supply amount.

[0082] Figure 4 It is an illustration of the dehumidification mode of Example 1, which is the dehumidification mode in the rainy season in late spring and early summer, and executes the second fluorine circuit circulation of cooling water and hot water; the second fluorine circuit process for domestic hot water is: compressor 1, first hot water heat exchanger 4 for hot water, second throttle J2, second hot water heat exchanger 5 for cooling water, four-way valve 2 in the cooling position (①② passage), gas-liquid separator 6, back to compressor 1; the third fluorine circuit process for air-conditioning cold water does not run because the outdoor fan is stopped; the start and stop conditions of the fluorine circuit electrical components: the four-way valve 2 is in the cooling position and the coil has no electricity, the compressor 1 is running, and the outdoor fan 3a is stopped; the water circuit executes the second and third circulation water circuits; the second circulation water circuit is: the second water pump 9, the second hot water heat exchanger 5 for cooling water or hot water, the water-air heat exchanger connecting pipe L2 , multiple water-to-air heat exchangers 12, 13, 14 cool or warm air, return pipe L4, flow back to the inlet of the second water pump 9; the third circulating water circuit is: the first water pump 8, the first hot water heat exchanger 4 makes hot water, the hot water tank 7, the second outlet of the electric three-way valve 10, its coil has no electricity, the hot water heating pipe L3, the hot air humidification heat exchanger 11, the inlet of the first water pump 8; the start and stop status of the electrical components of the water circuit: the first and second water pumps 8, 9 are running, the coil at the second outlet of the electric three-way 10 has no electricity, the fans of the water-to-air heat exchangers 12, 13, 14 rotate at a low speed, and the fan of the hot air humidification heat exchanger 11 rotates; the second circulating water circuit is to send cold water to the water-to-air heat exchanger for dehumidification; the third circulating water circuit is a circulating water circuit that replenishes heat when dehumidifying the hot air humidification heat exchanger;

[0083] Dehumidification mode control, manually specify dehumidification mode operation, the default refrigeration setting temperature is lower than 22℃, it will automatically switch to dehumidification mode operation, and it will stop when human intervention; the advanced type can detect the humidity of the indoor air, when the temperature is lower than 26℃ and the relative humidity is greater than 60%, it will start the dehumidification mode; when the relative humidity is less than 50%, it will stop automatically;

[0084] The dehumidification mode is manually specified. When the default cooling setting temperature is lower than 22℃, it will automatically switch to the dehumidification mode and stop when manually intervened. The advanced model can detect the humidity of the indoor air. When the temperature is lower than 26℃ and the relative humidity is greater than 60%, the dehumidification mode will be started; when the relative humidity is less than 50%, it will stop automatically.

[0085] Figure 5 This is an illustration of the defrosting mode of Example 1. In winter, when frost forms on the outdoor air heat exchanger during the heating cycle, a reverse heating cycle is adopted to execute the third air conditioning cold water fluorine circuit cycle and the second refrigeration water hot water fluorine circuit cycle. The start and stop conditions of the fluorine circuit electrical components are as follows: the four-way valve 2 is in the cooling position, the compressor 2 is running, and the outdoor fan is stopped; the water circuit executes the second and third water circuit operations, and the start and stop conditions of the water circuit electrical components are as follows: the first and second water pumps 8 and 9 are running, the electric three-way valve 10 is at the second outlet, and its coil is without electricity; the fans of the hot air humidifying heat exchanger 11 and the water-to-air heat exchangers 12, 13, and 14 are stopped; during the defrosting cycle, the exhaust gas entering the outdoor air heat exchanger 3 is condensed due to defrosting;

[0086] Control of defrost mode: Start-up conditions: During heating mode operation, when the outdoor air heat exchanger is severely frosted, that is, the temperature difference between the outdoor temperature and the outdoor air heat exchanger tube wall temperature suddenly exceeds the set value, the control system issues a defrost command and the unit enters the defrost mode; when the coil temperature of the outdoor air heat exchanger is greater than or equal to 8°C, the defrost mode is automatically stopped, and the unit is shut down for 1-3 minutes to wait for the pressure of the fluorine refrigerant circuit to be balanced, and then the heating mode is restarted.

[0087] The hot air humidifying heat exchanger described in Example 1 is a hot air humidifying heat exchanger modified from a water-to-air heat exchanger. A wet mesh cloth, a water storage tank, and a water supply pipeline are added to the thin rectangular box air duct of the water-to-air heat exchanger. The humidification principle is to use the hot water pipe of the water-to-air heat exchanger to heat the wet cloth and blow hot air through the wet mesh or wet cloth to bring water vapor into the room. When the indoor relative humidity φ<50%, humidification is started, and when the relative humidity φ≥50%, humidification is stopped. According to the indoor relative humidity φ and the set value of the relative humidity φ 0 The size of the difference △φ is adjusted by adjusting the opening frequency of the water replenishment valve to control the humidification water replenishment amount.

[0088] Figure 6 This is Example 2, the basic structure of the advanced integrated cold, warm and hot water multifunctional machine of the utility model and the fluorine circuit circulation and water circuit circulation illustration diagram for executing the cooling mode; compared with the general integrated cold, warm and hot water multifunctional machine of Example 1, the advanced type of Example 2 is shown in FIG. Figure 2The difference is that: a domestic hot water heat exchanger coil 7a is added to the hot water tank 7, and the domestic hot water is discharged by tap water top pressure. Its open process is: tap water is sent to each hot water tap 17 through the first water inlet valve Z1, the water inlet safety pressure relief valve 15, the domestic hot water heat exchanger coil in the hot water tank, and the hot water supply pipe L5; an inlet pipe equipped with a third water inlet valve Z3 is connected to the water inlet pipe of the hot water tank circulating water in the first circulating water circuit to replenish water for the first and second circulating water circuits.

[0089] Figure 7 This is Example 3, the basic structure of the top-level integrated cold, warm and hot water multifunctional machine of the utility model and the fluorine circuit circulation and water circuit circulation illustration diagram for executing the cooling mode; the top-level model of Example 3 is compared with the high-level integrated cold, warm and hot water multifunctional machine of Example 2, see Figure 6 The difference is that the third throttle J3 of the top-level integrated cold, warm and hot water multifunctional machine is an electronic expansion valve, and the compressor 1 is a variable frequency compressor.

[0090] Figure 8 This is the fourth embodiment of the utility model, a simple integrated cold, warm and hot water multifunctional machine, its basic structure and the fluorine circuit cycle and water circuit cycle illustration diagram for executing the cooling mode; the simple embodiment of the fourth embodiment is compared with the general-purpose integrated cold, warm and hot water multifunctional machine of the first embodiment, see Figure 2 , the dehumidification and heating and drying and humidification functions are cancelled, so the electric three-way valve 10 and the hot air humidification heat exchanger 11 of the water circuit are cancelled, that is, the third water circuit is cancelled, and the connection mode and process of the first circulating water circuit are changed to: the first water pump 8, the hot water tank 7, and the hot water outlet of the hot water tank are directly connected to the inlet of the first water pump 8 by the hot water connecting pipe L1; the rest are the same as in Example 1 and Figure 2 Same, no further elaboration.

Claims

1. The integrated cold and hot water multifunctional machine is a multifunctional, efficient and energy-saving cold and hot air conditioning four-season water heater, which is characterized by: The integrated cold and hot water multifunctional machine is composed of an integrated fluorine cycle cold and hot water machine, a water cycle heat exchange system and a hot water supply circuit, as well as a signal detection control system; the integrated fluorine cycle cold and hot water machine includes: a compressor, a four-way valve, an outdoor air heat exchanger, a first and a second hot water heat exchanger, a first, a second, a third and a fourth throttle, a gas-liquid separator, and also a liquid storage device; an outdoor fan is configured; the connection method is: the air outlet of the compressor is divided into two paths, the first path is connected to the fluorine path air inlet of the first hot water heat exchanger, and the second path is connected to the first interface of the four-way valve; the fluorine path liquid outlet of the first hot water heat exchanger is connected to the inlet of the first and the second throttles; the outlets of the first and the second throttles are respectively connected to the indoor The outdoor air heat exchanger is connected to the second interface of the second hot water heat exchanger; the second interface of the outdoor air heat exchanger and the second interface of the second hot water heat exchanger are also interconnected by the fourth throttle of the refrigeration cycle and the third throttle of the heating cycle whose flow direction is determined by a one-way valve; the second, third and fourth interfaces of the four-way valve are respectively connected to the first interface of the outdoor air heat exchanger, the first interface of the second hot water heat exchanger and the air inlet of the gas-liquid separator; the air outlet of the gas-liquid separator is connected to the air inlet of the compressor; the connected circulation loop is filled with refrigerant; the interfaces are all welded, and there is no mechanically connected external pipeline, forming an integrated fluorine cycle cold and hot water machine; four fluorine circuit cycles for producing cold water for air conditioning, hot water for heating and two types of domestic hot water can be organized.

2. The integrated cold, warm and hot water multifunctional machine according to claim 1 is characterized in that: The water circulation heat exchange system and hot water supply water circuit include: first and second hot water heat exchangers, a hot water tank, first and second water pumps, a water-air heat exchanger, a hot air humidification heat exchanger, an electric three-way valve, first and second water inlet valves, a water inlet safety pressure relief valve, and a connecting water pipe; the hot water tank is provided with a circulating water inlet and outlet interface and a domestic hot water inlet and outlet interface, and a domestic hot water heat exchanger coil may be added in the hot water tank; The connection mode of the water circulation heat exchange system is as follows: the outlet of the first water pump is connected to the water inlet of the first hot water heat exchanger; the water outlet of the first hot water heat exchanger is connected to the circulating water inlet of the hot water tank; the circulating water outlet of the hot water tank is connected to the inlet of the electric three-way valve; the first outlet of the electric three-way valve is connected to the inlet of the first water pump and the water outlet of the hot air humidification heat exchanger, and the second outlet is connected to the water inlet of the hot air humidification heat exchanger; the outlet of the second water pump is connected to the water inlet of the second hot water heat exchanger; the water outlet of the second hot water heat exchanger is connected to several water-to-air heat exchangers by a water-to-air heat exchanger connecting pipe. The water inlets are connected in parallel; the parallel pipes of the water outlets of several water-to-air heat exchangers are connected to the water inlet port of the return pipe; the outlet end of the return pipe is connected to the inlet of the second water pump; the water replenishment of the circulating water exchange circuit is injected with softened water through the second water inlet valve on the return pipe connected to the inlet of the second water pump; the circulating water exchange circuit is equipped with a drain valve; the inlet and outlet pipes of the water-to-air heat exchanger and the hot air humidification heat exchanger are equipped with manual stop valves for easy maintenance; the connected circulating water exchange circuit can be composed of three types of circulating water circuits: a circulating water circuit for making domestic hot water, a circulating water circuit for making cold water for air conditioning, and a circulating water circuit for making hot water for heating; The hot water supply water connection and hot water supply method are: a tap water pipe, a first water inlet valve, a water inlet safety pressure relief valve, an inlet of domestic hot water connected to the bottom of the hot water tank, and a domestic hot water outlet on the top of the hot water tank connected to a hot water supply pipe. A number of hot water taps are installed on the hot water supply pipe, and hot water is supplied by tap water top pressure.

3. The integrated cold, warm and hot water multifunctional machine according to claim 1 is characterized in that: The hot air humidification heat exchanger is a hot air humidification heat exchanger modified from a water-to-air heat exchanger. A wet mesh cloth, a water storage tank and a water supply pipeline are added to the thin rectangular box air duct of the water-to-air heat exchanger.

4. The integrated cold, warm and hot water multifunctional machine according to claim 1 is characterized in that: A domestic hot water heat exchanger coil may be added to the hot water tank; an inlet pipe equipped with a third water inlet valve is connected to the hot water tank circulating water inlet pipeline of the first circulating water circuit.

5. The integrated cold, warm and hot water multifunctional machine according to claim 1 is characterized in that: The compressor, four-way valve, outdoor air heat exchanger, first and second hot water heat exchangers, first, second, third and fourth throttles, and gas-liquid separators also used as liquid storage devices of the integrated fluorine cycle cold and hot water machine are all installed in the outdoor machine body, and the joints of each pipeline are welded, and the fluorine circuit is a closed integrated type; the first and second hot water heat exchangers are plate heat exchangers or sleeve heat exchangers; the first and second water pumps and electric three-way valves of the water circulation heat exchange system are also installed in the outdoor machine body; the outdoor machine body only has three sets of circulating water circuit external interfaces, which are respectively connected to the hot water tank, indoor The installed water-to-air heat exchanger and hot air humidification heat exchanger are connected with the water inlet and outlet interfaces, specifically: the water outlet of the first hot water heat exchanger and the water inlet interface of the electric three-way valve are connected with the circulating water inlet and outlet interfaces of the hot water tank; the water inlet interface of the second water pump and the water outlet interface of the second hot water heat exchanger are connected with the inlet and outlet ports of the water-to-air heat exchanger's inlet and outlet main pipes; the second outlet of the electric three-way valve and the three-way interface of the electric three-way valve connected with the first outlet of the electric three-way valve and the inlet of the first water pump are connected with the water inlet and outlet interfaces of the hot air humidification heat exchanger; the water-to-air heat exchanger and the hot air humidification heat exchanger are arranged indoors.

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