Refrigerator with water heater function

Abstract

The invention relates to the technical field of refrigerator heat pump application, in particular to a refrigerator with a water heater function. The refrigerator with the water heater function comprises an MCU microprocessor control circuit, a composite refrigerator and a condensation water heater, and the composite refrigerator and the condensation water heater form a left-right structure; the composite refrigerator and the condensation water heater are connected through a thin heat preservation pipe, a thick heat preservation pipe and a circuit. The MCU microprocessor control circuit comprehensively manages all work of the refrigerator with the water heater function; the refrigerator with the water heater function has the beneficial effects that the refrigerator with the water heater function has the water heater function and the refrigerator function, the manufacturing cost is low, and equivalently, the cost for buying refrigerators is that one refrigerator and one water heater are bought; an electric heating tube of the electric water heater is replaced by the condenser, hot water is produced by heat release of the condenser, the heating efficiency is 4.5, and the electric leakage risk of the electric water heater is also eradicated; tap water is adopted to release heat, the refrigerating efficiency of the refrigerator reaches up to 3.5, the total electric efficiency is close to 8, and energy conservation and high efficiency of household appliances are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator and heat pump application, in particular to a refrigerator with water heater function. Background Art

[0002] Refrigerators and electric water heaters are two essential household appliances, and they are also two major household electricity consumers. Refrigerators use compressors to drive the circulation and phase change process of refrigerants to transfer heat, commonly known as heat pump technology, to transfer heat from low-temperature objects to high-temperature objects to achieve cooling or heating. The circulation of refrigerants is roughly divided into four processes: compression process, condensation phase change process, throttling process and evaporation phase change process. The evaporation process is the cooling and cooling process of the refrigerant liquid absorbing heat to change into gas. The refrigerator absorbs heat and cools down inside, showing the refrigerator's refrigeration and freezing functions, but ignores the condensation phase change heat release process. The condensation heat release of the refrigerator refrigerant gas to liquid is concentrated on the refrigerator shell. If you touch the refrigerator shell with your hand and feel it is slightly hot, it is condensation heat release. The heat of the refrigerator shell is lost in vain, which not only increases the indoor temperature, but also increases the loss of refrigerator electricity. The working principle of the electric water heater is to use the electric heating tube to convert electrical energy into thermal energy. The electric heating tube has high power and electric power efficiency is less than 1. The water temperature is automatically controlled by the thermostat to achieve heating and insulation of water in a closed container. Another obvious drawback of electric water heaters is that the electric heating tube directly contacts the hot water for bathing, which may cause leakage risk. The inventors combined the refrigerator with the electric water heater, and replaced the electric heating tube of the water heater with the condensation heat release of the refrigerant gas phase change liquid, that is, using the waste heat generated by the refrigerator to produce hot water, while retaining the refrigerant evaporation heat absorption and cooling function inside the refrigerator, eliminating the risk of leakage and further improving the power utilization rate of the refrigerator. Summary of the invention

[0003] In view of the wasteful heat dissipation of refrigerator casings, high power consumption and leakage risks of electric water heaters, combining refrigerators with electric water heaters can kill two birds with one stone and create a refrigerator with water heater function.

[0004] The technical solution of the present invention: A refrigerator with a water heater function, comprising an MCU microprocessor control circuit, a compound refrigerator and a condensing water storage type water heater, wherein the compound refrigerator and the condensing water storage type water heater constitute a left-right split structure refrigerator with a water heater function; The composite refrigerator includes a heat-insulating shell, a compressor, a three-position three-way solenoid valve, an expansion valve, an evaporation pipe network 1, a temperature sensor 1, an evaporation pipe network 2, a temperature sensor 2, an evaporation pipe network 3, a temperature sensor 3, a refrigerant return pipe and a gas-liquid separation tank; the difference between the composite refrigerator and a common refrigerator is that the composite refrigerator has no condensation heat release components; The shape of the insulation shell is a long cube, and the height of the long cube is greater than the other side lengths; the long cube is divided into four layers from bottom to top, namely the equipment room, the freezing room, the micro-freezing room and the cold storage room. Compared with the freezing room, the micro-freezing room and the cold storage room, the height of the equipment room is the smallest, and the length and thickness of the three rooms are the same; the freezing room, the micro-freezing room and the cold storage room are independently provided with front doors, namely the front door of the freezing room, the front door of the micro-freezing room and the front door of the cold storage room; an inspection door is provided at the back of the equipment room; A DC power supply module, a compressor starter, a protection module, a gas-liquid separation tank and a refrigerant return pipe are installed in the equipment room. The refrigerant return pipe is connected to the gas-liquid separation tank, the gas-liquid separation tank pipe is connected to the compressor inlet, and the compressor outlet is connected to the right interface of the three-way valve outside the composite refrigerator. At this time, the left and middle interfaces of the three-way valve are connected; A temperature sensor 1, an expansion valve 1 and an evaporation pipe network 1 are installed inside the freezer compartment, the external two-way valve of the composite refrigerator is closed, the external two-way valve of the composite refrigerator is connected to the inlet of the three-position three-way solenoid valve inside the refrigerator compartment through a thin tube embedded inside the refrigerator insulation layer, the outlet 1 of the three-position three-way solenoid valve is connected to the expansion valve 1, the expansion valve 1 pipeline is connected to the evaporation pipe network 1, the evaporation pipe network 1 pipeline is connected to the refrigerant return pipeline, and the refrigerant return pipeline is embedded inside the refrigerator insulation layer; the temperature sensor 1 circuit is connected to the MCU microprocessor control circuit, and the MCU microprocessor control circuit is connected to the three-position three-way solenoid valve; The micro-freezing chamber is equipped with a temperature sensor 2, an expansion valve 2 and an evaporation pipe network 2. The circuit of the temperature sensor 2 is connected to the MCU microprocessor control circuit. The outlet 2 of the three-position three-way solenoid valve is connected to the expansion valve 2. The expansion valve 2 is connected to the evaporation pipe network 2. The evaporation pipe network 2 is connected to the refrigerant return pipe. The refrigerant return pipe is embedded in the insulation layer of the refrigerator. A lighting lamp is installed on the top of the cold storage room, a door light switch is installed on one side of the cold storage room, a temperature sensor 3, a three-position three-way solenoid valve, an expansion valve 3 and an evaporation pipe network 3 are installed inside the cold storage room, the lighting lamp circuit is connected to the door light switch, the door light switch and the temperature sensor 3 circuit are connected to the MCU microprocessor control circuit, the outlet 3 of the three-position three-way solenoid valve is connected to the expansion valve 3, the expansion valve 3 is connected to the evaporation pipe network 3, the evaporation pipe network 3 pipeline is connected to the refrigerant return pipeline, the refrigerant return pipeline is embedded in the insulation layer of the refrigerator, passes downward through the micro-freezing room and the freezing room, enters the equipment room pipeline to connect to the gas-liquid separation tank, the gas-liquid separation tank is connected to the compressor, and a refrigerant cycle is formed; The condensing water storage type water heater comprises an oil barrel-shaped shell, an oil barrel-shaped water storage liner, a condenser pipe network, a base, a tap water inlet pipe, a hot water outlet pipe, and a water temperature sensor. The oil barrel-shaped shell is erected, the oil barrel-shaped water storage liner is installed in the oil barrel-shaped shell, the oil barrel-shaped water storage liner is coaxial with the oil barrel-shaped shell, and a heat-insulating material is filled between the oil barrel-shaped water storage liner and the oil barrel-shaped shell; through holes are arranged on the upper and lower ends of the side surfaces of the oil barrel-shaped shell and the oil barrel-shaped water storage liner, a tap water inlet pipe is arranged in the lower through hole, a hot water outlet pipe is arranged in the upper through hole, and the tap water inlet pipe, the hot water outlet pipe and the through hole are sealed; a through hole is arranged on the lower side of the hot water outlet pipe, a water temperature sensor 1 is arranged inside the through hole, the water temperature sensor 1 and the through hole are sealed, a through hole is arranged on the upper side of the tap water inlet pipe at the lower end, a water temperature sensor 2 is installed in the through hole, and the circuits of the water temperature sensor 1 and the water temperature sensor 2 are connected to the MCU microprocessor control circuit; A flange hatch cover is arranged at the center of the lower side of the oil barrel-shaped water storage liner, and two through holes are arranged at the center of the flange hatch cover. The condenser pipe network is a spiral metal tube, and high-temperature refrigerant gas flows inside the spiral metal tube. The length of the spiral metal tube is adapted to the length of the oil barrel-shaped water storage liner; the spiral metal tube passes through the two condenser through holes of the flange hatch cover and is welded and fixed, and the through holes and the metal tube are sealed; the flange hatch cover is covered, and the condenser pipe network is inserted into the oil barrel-shaped water storage liner, and the flange hatch cover and the oil barrel-shaped water storage liner are sealed to maintain the inside of the oil barrel-shaped water storage liner sealed; the oil barrel-shaped water storage liner is fixed to the oil barrel-shaped outer shell and then installed on the oil barrel-shaped base; copper tubes are preferably used for the condenser pipe network; One of the two interfaces on the outside of the flange hatch cover at the lower end of the oil barrel-shaped water storage tank is connected to a thick insulation pipe, which is a thick pipe covered with an insulation sleeve; the thick insulation pipe is bent 90 degrees and connected to the left interface of the three-way valve outside the composite refrigerator; the other interface on the outside of the flange hatch cover is connected to a thin insulation pipe; the thin insulation pipe is a thin pipe covered with an insulation sleeve; the thin insulation pipe is bent 90 degrees and connected to the two-way valve outside the composite refrigerator.

[0005] After the insulation thick tube and the insulation thin tube are connected, connect the vacuum pump to the middle interface of the three-way valve, turn on the vacuum pump, open the left and middle interfaces of the three-way valve, and evacuate the spiral metal tube, i.e., the condenser pipe network; After the spiral metal tube, i.e. the condenser network, is evacuated, the left and middle interfaces of the three-way valve are closed, the left and right interfaces of the three-way valve are connected, and the two-way valve is opened. The high-temperature and high-pressure refrigerant gas of the compressor enters the condenser network, and after phase change and heat release, enters the insulation thin tube, the three-position three-way solenoid valve, and the expansion valve, and then enters the evaporation network, phase change and heat absorption, and enters the gas-liquid separation tank through the refrigerant return pipeline, and enters the compressor again from the gas-liquid separation tank, forming a refrigerant cycle; the water temperature sensor 1 and the water temperature sensor 2 circuit are connected to the MCU microprocessor control circuit; the compound refrigerator and the condensing water storage water heater are connected with insulation thin tubes, insulation thick tubes and circuits, the MCU microprocessor control circuit contains MCU microprocessor module, DC power supply module, display module and compressor start-up and protection circuit module, and the external AC power is connected to the MCU microprocessor control circuit; the MCU microprocessor control circuit accepts comprehensive management of all the work of the refrigerator with water heater function.

[0006] An introduction to the working principle of a refrigerator with water heater function A refrigerator with a water heater function, comprising an MCU microprocessor control circuit, a compound refrigerator and a condensing water storage type water heater, wherein the compound refrigerator and the condensing water storage type water heater constitute a split structure refrigerator with a water heater function, the MCU microprocessor is connected to the mains to control and manage all operations of the refrigerator with a water heater function, the compound refrigerator is responsible for refrigeration, and the condensing water storage type water heater is responsible for water heater function, thus constituting the refrigerator with a water heater function; The design idea of ​​the present invention is to use the refrigerator function as the main function and the water heater as the auxiliary function; the condensing water storage water heater is the heat load of the refrigerator, and the refrigerator with the water heater function can only be used after it is filled with water.

[0007] First, the condensing water storage water heater is filled with water; first, the hot water outlet pipe switch is turned on, and then the tap water inlet pipe switch is turned on, until the tap water fills the oil barrel-shaped water storage tank and the tap water flows out from the hot water outlet pipe, and then the hot water outlet pipe switch is turned off, and the tap water inlet pipe switch remains turned on; the power supply of the refrigerator with water heater function is turned on; the MCU microprocessor control circuit starts to work, monitors the internal water temperature 1 and water temperature 2 of the condensing water storage water heater, the temperature of the refrigerator compartment, the temperature of the micro-freezing compartment and the temperature of the freezing compartment, controls the three-position three-way solenoid valve to refrigerate the freezing compartment, the micro-freezing compartment and the refrigerating compartment, and the display shows the upper and lower water temperatures inside the condensing water storage water heater, the temperature of the refrigerator compartment, the temperature of the micro-freezing compartment and the temperature of the freezing compartment; initially, the upper and lower water temperatures inside the condensing water storage water heater, that is, water temperature 1 and water temperature 2 are the same; The MCU microprocessor control circuit starts the compressor; the compressor sucks in low-temperature and low-pressure refrigerant gas and pumps out high-temperature and high-pressure refrigerant gas, which passes through the three-way valve switch and the insulation thick pipe into the condenser pipe network; the high-temperature and high-pressure refrigerant gas changes phase and releases heat in the condenser pipe network, and the condenser pipe network heats the condensation storage water heater and fills the water; the hot water has a light specific gravity and automatically floats up; at this time, the water temperature 1 starts to rise, and the water temperature 2 remains unchanged; the high-temperature and high-pressure refrigerant gas at the back pushes the medium-temperature and medium-pressure refrigerant liquid at the front forward to the three-position three-way solenoid valve; The MCU microprocessor control circuit opens the outlet of the three-position three-way solenoid valve, and the medium-temperature and medium-pressure refrigerant liquid flowing out of the condenser pipe network passes through the insulation capillary, the two-way valve switch, the outlet 1 of the three-position three-way solenoid valve, and the expansion valve 1; it comes out of the expansion valve 1 and enters the evaporation pipe network 1, and the pressure drops suddenly. The medium-temperature and medium-pressure refrigerant liquid absorbs heat and changes into a low-temperature and low-pressure refrigerant gas, and the temperature of the freezer around the evaporation pipe network 1 drops suddenly; when the temperature of the freezer drops to the set temperature, the MCU microprocessor control circuit closes the outlet 1 of the three-position three-way solenoid valve; The MCU microprocessor control circuit opens the three-position three-way solenoid valve, and the medium-temperature medium-pressure refrigerant liquid flowing out of the condenser pipe network passes through the insulation capillary, the two-way valve switch, the three-position three-way solenoid valve outlet 2, and the expansion valve 2 into the evaporation pipe network 2. The medium-temperature medium-pressure refrigerant liquid absorbs heat and changes into a low-temperature and low-pressure refrigerant gas, and the temperature of the micro-freezing chamber around the evaporation pipe network 2 also drops suddenly; when the temperature of the quick-freezing chamber drops to the set temperature, the MCU microprocessor control circuit closes the three-position three-way solenoid valve outlet 2; The MCU microprocessor control circuit opens the three-position three-way solenoid valve, and the medium-temperature medium-pressure refrigerant liquid flowing out of the condenser pipe network enters the evaporation pipe network 3 through the insulation capillary, the two-way valve switch, the three-position three-way solenoid valve outlet 3, and the expansion valve 3. The medium-temperature medium-pressure refrigerant liquid enters the evaporation pipe network 3 along the pipeline, and the medium-temperature medium-pressure refrigerant liquid absorbs heat and changes into low-temperature and low-pressure refrigerant gas, and the temperature of the cold storage room around the evaporation pipe network 3 also drops; when the temperature of the cold storage room drops to the set temperature, the MCU microprocessor control circuit closes the three-position three-way solenoid valve outlet 3; when the three outlets of the three-position three-way solenoid valve are all closed, the MCU microprocessor control circuit shuts down the compressor; Then the low-temperature and low-pressure refrigerant gas enters the gas-liquid separation tank along the refrigerant return pipe, and the low-temperature and low-pressure refrigerant gas from the outlet of the gas-liquid separation tank enters the compressor again and enters the cycle process. The temperature inside the composite refrigerator continues to drop until it reaches the set temperature; the temperature inside the condenser water heater rises and approaches 55 degrees; when the water temperature sensor indicates that the temperature of the hot water at the bottom of the condenser water heater rises to nearly 55 degrees, the MCU microprocessor control circuit issues a prompt that some hot water needs to be discharged, and the MCU microprocessor control circuit shuts down the compressor and waits for some hot water to be discharged before working again.

[0008] The advantages of the present invention are that the refrigerator with water heater function has the dual functions of a water heater and a refrigerator, and has a low cost; it is equivalent to using the money for buying a refrigerator to buy a refrigerator and a water heater; the composite refrigerator condenser is used to replace the electric heating tube of the electric water heater, and the condenser is used to release heat to produce hot water, the heating efficiency is 4.5, and the risk of electric leakage of the electric water heater is eliminated; tap water is used to absorb phase change heat release, the refrigerator refrigeration efficiency is as high as 3.5, and the total electric power efficiency is close to 8, achieving zero loss of household appliances and energy saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The present invention is a schematic diagram showing the connection of left and right split structural modules of a refrigerator having the function of a water heater.

[0010] Figure 2 The present invention is a schematic diagram of the connection of the upper and lower integrated structural modules of a refrigerator with the function of a water heater.

[0011] Figure 3 It is a circuit diagram of a refrigerator which also functions as a water heater.

[0012] In the figure: 100, MCU microprocessor control circuit including MCU microprocessor module, DC power supply module and compressor start and protection circuit module, 101, display module, 200, compound refrigerator, 201, insulation shell, 201.1, equipment room, 201.2, freezing room, 201.3, micro-freezing room, 201.4, cold storage room, 201.5, condensing water storage water heater room, 202, compressor, 203, thin tube embedded in the insulation layer of the refrigerator, 204, evaporation pipe network 1, 205, temperature sensor 1, 206, evaporation pipe network 2, 207, temperature sensor 2, 208, evaporation pipe network 3, 209, temperature sensor 3, 210, refrigerant return pipeline, 211, gas-liquid separation tank, 212, three-way valve, 213, two-way valve, 214, expansion valve 1, 215, three-position three-way solenoid valve, 216, expansion valve 2, 217. Expansion valve 3, 300. Condensing water storage water heater, 301. Base, 302. Tap water inlet pipe, 303. Water temperature sensor 2, 304. Condenser pipe network, 305. Water temperature sensor 1, 306. Hot water outlet pipe, 307. Insulated thin pipe, 308. Insulated thick pipe, 309. Oil drum-shaped outer shell, 310. Oil drum-shaped water storage liner, 311. Cube water storage liner. DETAILED DESCRIPTION

[0013] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0014] Embodiment 1 of the present invention, as Figure 1As shown, a refrigerator having a water heater function composed of a left-right split composite refrigerator and a condensing water storage type water heater is used as an example to illustrate: a refrigerator having a water heater function, the refrigerator having a water heater function comprises an MCU microprocessor control circuit (100), a composite refrigerator (200) and a condensing water storage type water heater (300), wherein the composite refrigerator (200) and the condensing water storage type water heater (300) constitute a left-right split structure; The composite refrigerator (200) comprises a heat-insulating shell (201), a compressor (202), an expansion valve (203), an evaporation pipe network 1 (204), a temperature sensor 1 (205), an evaporation pipe network 2 (206), a temperature sensor 2 (207), an evaporation pipe network 3 (208), a temperature sensor 3 (209), a refrigerant return pipeline (210), a gas-liquid separation tank (211), a three-way valve (212), a two-way valve (213), an expansion valve 1 (214), a three-position three-way solenoid valve (215), an expansion valve 2 (216) and an expansion valve 3 (217); the length of the evaporation pipe network 1 (204) is greater than the length of the evaporation pipe network 2 (206), and the length of the evaporation pipe network 2 (206) is greater than the length of the evaporation pipe network 3 (208); The heat-insulating shell (201) of the composite refrigerator is in the shape of a long cube, wherein the height of the long cube is greater than the other sides; the long cube is divided into four layers from bottom to top, namely, an equipment room (201.1), a freezing room (201.2), a micro-freezing room (201.3) and a refrigerating room (201.4); the width and thickness of the equipment room (201.1), the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4) are the same; compared with the freezing room (201.2), the micro-freezing room (201.3) and The height of the cold storage room (201.4) and the equipment room (201.1) is the smallest; the freezer room (201.2), the micro-freezer room (201.3) and the cold storage room (201.4) are independently provided with front doors, namely the front door of the freezer room, the front door of the micro-freezer room and the front door of the cold storage room; an embedded dark grid display window is provided at the upper middle of the front door of the cold storage room, and the display window has a built-in display module (101); an instrument compartment with a thickness of 3 cm is provided at the rear side of the cold storage room, and an MCU microprocessor module is installed in the instrument compartment; an inspection door is provided at the rear of the equipment room (201.1); A DC power supply module, a compressor (202) start, protection, and stop module, a gas-liquid separation tank (211), and a refrigerant return pipe (210) are installed in the equipment room (201.1); the refrigerant return pipe (210) is connected to the gas-liquid separation tank (211); the gas-liquid separation tank (211) pipe is connected to the compressor (202) inlet; the compressor (202) outlet is connected to the right interface of the three-way valve outside the composite refrigerator (200); at this time, the left interface and the middle interface of the three-way valve are connected, and the right interface is closed; A temperature sensor 1 (205), an expansion valve 1 (214) and an evaporation pipe network 1 (204) are installed inside the freezer (201.2); the two-way valve (213) outside the composite refrigerator (200) is closed; the two-way valve (213) is connected to the inlet of a three-position three-way solenoid valve (215) through a thin tube (203) embedded inside the refrigerator insulation layer; the outlet 1 of the three-position three-way solenoid valve (215) is connected to the expansion valve 1 (214) through a thin tube embedded inside the refrigerator insulation layer; the expansion valve 1 (214) pipeline is connected to the evaporation pipe network 1 (204); the evaporation pipe network 1 (204) is installed and connected in layers; the evaporation pipe network 1 (204) pipeline is connected to the refrigerant return pipe (210); the refrigerant return pipe (210) is embedded inside the refrigerator insulation layer; the temperature sensor 1 (205) circuit is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); The micro-freezing chamber is equipped with a temperature sensor 2 (207), an expansion valve 2 (216) and an evaporation pipe network 2 (206); the circuit of the temperature sensor 2 (207) is connected to the MCU microprocessor control circuit (100); the circuit of the MCU microprocessor control circuit (100) is connected to a three-position three-way solenoid valve (215); an outlet 2 of the three-position three-way solenoid valve (215) is connected to the expansion valve 2 (216) through a thin tube embedded in the heat preservation layer of the refrigerator; the expansion valve 2 (216) is connected to the evaporation pipe network 2 (206); the pipe of the evaporation pipe network 2 (206) is connected to a refrigerant return pipe (210); and the refrigerant return pipe (210) is embedded in the heat preservation layer of the refrigerator; A lighting lamp is installed on the top of the cold storage room (201.4), a door light switch is installed on one side of the cold storage room (201.4) near the front, a temperature sensor 3 (209), a three-position three-way solenoid valve (215), an expansion valve 3 (217) and an evaporation pipe network 3 (208) are installed inside the cold storage room (201.4), the lighting lamp circuit is connected to the door light switch, the door light switch and the temperature sensor 3 (209) circuit are connected to the MCU microprocessor control circuit (100), and the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); the three-position The outlet 3 of the three-way solenoid valve (215) is connected to the expansion valve 3 (217) through a thin tube embedded in the refrigerator insulation layer, the expansion valve 3 (217) is connected to the evaporation pipe network 3 (208), the evaporation pipe network 3 (208) pipe is connected to the refrigerant return pipe (210), the refrigerant return pipe (210) is embedded in the refrigerator insulation layer and passes downward through the micro-freezing chamber and the freezing chamber (201.2), enters the equipment room (201.1) and is connected to the gas-liquid separation tank (211), and the gas-liquid separation tank (211) is connected to the compressor (202), thereby forming a refrigerant cycle; The condensing water storage type water heater (300) comprises an oil barrel-shaped outer shell (309), an oil barrel-shaped water storage inner tank (310), a condenser pipe network (304), a base (301), a tap water inlet pipe (302), a hot water outlet pipe (306), a water temperature sensor 1 (305) and a water temperature sensor 2 (303); the oil barrel-shaped outer shell (309) is bottomless and vertical; the oil barrel-shaped water storage inner tank (310) is installed in the oil barrel-shaped outer shell (309); the oil barrel-shaped water storage inner tank (310) is coaxial with the oil barrel-shaped outer shell (309); and a heat insulating material is filled between the oil barrel-shaped water storage inner tank (310) and the oil barrel-shaped outer shell (309); Through holes are provided at the upper and lower ends of the side of the inner tank (310); a tap water inlet pipe (302) is provided in the lower through hole; a hot water outlet pipe (306) is provided in the upper through hole; the tap water inlet pipe (302), the hot water outlet pipe (306) and the through hole are sealed; a through hole is provided under the hot water outlet pipe (306); a water temperature sensor 1 (305) is provided inside the through hole; the water temperature sensor 1 (305) and the corresponding through hole are sealed; a through hole is provided on the tap water inlet pipe (302); a water temperature sensor 2 (303) is installed in the through hole; the water temperature sensor 1 (305) and the water temperature sensor 2 (303) are circuit-connected to the MCU microprocessor control circuit (100); A flange hatch cover is provided at the lower side of the oil barrel-shaped water storage liner, and two condenser through holes are provided at the lower side of the flange hatch cover. The condenser pipe network (304) is a group of spiral metal tubes, and high-temperature refrigerant gas flows inside the spiral metal tubes. The length of the spiral metal tubes is adapted to the length of the oil barrel-shaped water storage liner. The spiral metal tubes pass through the two condenser through holes of the flange hatch cover and are welded and fixed, and the through holes are sealed. The flange hatch cover is covered, and the condenser pipe network (304) is inserted into the oil barrel-shaped water storage liner. The flange hatch cover and the oil barrel-shaped water storage liner are sealed to maintain the inside of the oil barrel-shaped water storage liner airtight. The oil barrel-shaped water storage liner (310) is fixed to the oil barrel-shaped outer shell (309) and then installed on the oil barrel-shaped base (301). The condenser pipe network (304) is preferably a copper tube. The lower end of the oil barrel-shaped water storage liner (310) has two interfaces on the outside of the flange hatch cover, and the inside is connected to the condenser pipe network (304); one interface on the outside of the flange hatch cover is connected to the insulation thick pipe, which is a thick pipe covered with an insulation sleeve, and the insulation thick pipe is bent 90 degrees and connected to the left interface of the three-way valve outside the composite refrigerator (200); the other interface on the outside of the flange hatch cover is connected to the insulation thin pipe, which is a thin pipe covered with an insulation sleeve, and the insulation thin pipe (307) is bent 90 degrees and connected to the two-way valve (213) outside the composite refrigerator (200), and the two-way valve (213) is closed.

[0015] The two-way valve (213) and the three-way valve (212) are two-way valves and three-way valves of air conditioners; the left and middle interfaces of the three-way valve are connected; the thick insulation tube (308) is connected to the left interface of the three-way valve, and the thin insulation tube (307) is connected to the two-way valve (213); a vacuum pump is connected to the middle interface of the three-way valve (212), and the vacuum pump is turned on to evacuate the inside of the spiral metal tube, i.e., the condenser pipe network (304); After the spiral metal tube, i.e., the condenser pipe network (304), is evacuated, the left and middle interfaces of the three-way valve are closed, the left and right interfaces of the three-way valve are connected, and the two-way valve (213) is opened to enter the working state; the compressor (202) is started, and the high-temperature and high-pressure refrigerant gas enters the condenser pipe network (304) from the insulation thick pipe (308), and after phase change and heat release, enters the insulation thin pipe (307), the two-way valve (213), the thin pipe (203) embedded in the insulation layer of the refrigerator, the three-position three-way solenoid valve (215), and the expansion valve 1 (214), and enters the evaporation pipe network 1 from the expansion valve (214), after phase change and heat absorption, enters the refrigerant return pipe; the refrigerant return pipe (210) is embedded in the insulation layer of the refrigerator; the refrigerant return pipe (210), the gas-liquid separation pipe (210) and the gas-liquid separation pipe (214) are connected to the evaporation pipe network 1, and the gas-liquid separation pipe (210) are connected to the evaporation pipe network 1, ...4) are connected to the evaporation pipe network 1, and the gas-liquid separation pipe (214) are connected to the evaporation pipe network 1, and the gas-liquid separation pipe (210) are connected to the evaporation pipe network 1, and the gas-liquid separation pipe (214) are The tank (211) enters the compressor again to form a refrigerant cycle; the water temperature sensor 1 (305) and the water temperature sensor 2 (303) are connected to the MCU microprocessor control circuit (100); the composite refrigerator (200) and the condensing water storage type water heater (300) are connected by a heat-insulating thin tube (307), a heat-insulating thick tube (308) and a circuit; the MCU microprocessor control circuit (100) includes an MCU microprocessor module, a DC power supply module, a display module (101) and a compressor start, protection or stop circuit module; the external AC power is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) receives temperature information and comprehensively manages all operations of the refrigerator with water heater function.

[0016] Embodiment 1 of the present invention uses a composite refrigerator that is split into left and right parts and a condensing water storage type water heater as examples to illustrate the scope of patent protection; based on the same principle, a refrigerator that has water heater functions and is composed of a composite refrigerator (200) that is split into upper and lower parts or front and back parts and a condensing water storage type water heater (300) is also within the scope of protection.

[0017] like Figure 2 As shown, in Example 2, a refrigerator having a water heater function and composed of a composite refrigerator and a condensing water storage water heater in one body is taken as an example to explain as follows: A refrigerator with a water heater function, the refrigerator with a water heater function comprising an MCU microprocessor control circuit (100), a heat-insulating shell (201), a compressor (202), an expansion valve 1 (214), a three-position three-way solenoid valve (215), a cubic water storage tank (311), a tap water inlet pipe (302), a water temperature sensor 1 (303), a water temperature sensor 2 (305), a hot water outlet pipe (306), a condenser pipe network (304), an evaporation pipe network 1 (204), a temperature sensor 1 (205), an expansion valve 2 (216), an evaporation pipe network 2 (2 06), temperature sensor 2 (207), expansion valve 3 (217), evaporation pipe network 3 (208), temperature sensor 3 (209), refrigerant return pipe (210) and gas-liquid separation tank (211); the insulation shell (201), compressor (202), expansion valve (203), evaporation pipe network 1 (204), temperature sensor 1 (205), evaporation pipe network 2 (206), temperature sensor 2 (207), evaporation pipe network 3 (208), temperature sensor 3 (209), refrigerant return pipe (210) and gas-liquid separation tank (211) constitute a composite refrigerator; A condensing water storage type water heater consisting of a cubic water storage tank (311), a tap water inlet pipe (302), a water temperature sensor 1 (303), a water temperature sensor 2 (305), a hot water outlet pipe (306) and a condenser pipe network (304); The MCU microprocessor control circuit (100) includes an MCU microprocessor module, a DC power supply module, a display module and a compressor (202) start, protection and shutdown circuit module, and the external AC power is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) is responsible for comprehensively managing all operations of the refrigerator with a water heater function; The thermal insulation shell (201) is in the shape of a long cube, the height of which is greater than the other sides; the thermal insulation shell (201) is divided into five layers from bottom to top, namely, an equipment room (201.1), a condensing water storage water heater room (201.5), a freezing room (201.2), a micro-freezing room (201.3) and a cold storage room (201.4). Compared with the condensing water storage water heater room, the freezing room (201.2), the micro-freezing room (201.3) and the cold storage room (201.4), the thermal insulation shell (201) is divided into five layers from bottom to top, namely, an equipment room (201.1), a condensing water storage water heater room (201.5), a freezing room (201.2), a micro-freezing room (201.3) and a cold storage room (201.4). ), the height of the equipment room is the smallest, and the length and thickness of each room are the same; the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4) are independently provided with front doors, namely the freezing room front door, the micro-freezing room front door and the refrigerating room front door; the water heater room (201.5) and the equipment room (201.1) are provided with maintenance doors at the back; the condensing water storage water heater (300) is installed on the second layer of the composite refrigerator, forming a refrigerator with a top-to-bottom integrated structure and a water heater function; A DC power supply module, a compressor (202) start-up and protection module, a gas-liquid separation tank (211) and a refrigerant return pipe (210) are installed in the equipment room, the refrigerant return pipe (210) is connected to the gas-liquid separation tank (211), the gas-liquid separation tank (211) pipe is connected to the compressor (202) inlet, and the compressor (202) high-pressure outlet is connected to the insulation thick pipe (308); A cubic water storage tank (311) is installed in the water heater chamber, and the size of the cubic water storage tank (311) is adapted to the size of the interior of the condensing water storage type water heater chamber; through holes are provided at the upper and lower ends of the sides of the heat-insulating shell (201) and the cubic water storage tank (311); a tap water inlet pipe (302) is provided in the lower through hole, and a hot water outlet pipe (306) is provided in the upper through hole; a through hole is provided on the tap water inlet pipe (302) on the side of the cubic water storage tank (311), and a water temperature sensor 1 (303) is provided in the through hole; a through hole is provided under the hot water outlet pipe (306) on the side of the cubic water storage tank (311), and a water temperature sensor 2 (305) is provided in the through hole; and the tap water inlet pipe (302), the water temperature sensor 1 (303), the water temperature sensor 2 (305) and the hot water outlet pipe (306) and their through holes are sealed; The circuits of water temperature sensor 1 (303) and water temperature sensor 2 (305) are connected to the MCU microprocessor control circuit (100); a flange hatch cover is provided on the other side of the cubic water storage liner (311), and two condenser through holes are provided in the middle of the flange hatch cover; the condenser pipe network (304) is a group of spiral metal tubes, and high-temperature refrigerant gas flows inside the spiral metal tubes, and the length of the spiral metal tubes is adapted to the length of the cubic water storage liner (311); the spiral metal tubes pass through the two condenser through holes of the flange hatch cover and are welded and fixed, and the spiral metal tubes and the through holes are sealed; the flange hatch cover is covered, and the condenser pipe network (304) is inserted into the cubic water storage liner (311), and the flange hatch cover and the cubic water storage liner (311) are sealed to maintain the interior of the cubic water storage liner (311) sealed; the condenser pipe network (304) is preferably a copper tube; The cubic water storage liner (311) has two interfaces on the outside of the flange hatch cover on the side, one interface on the outside of the flange hatch cover is connected to the thick insulation tube (308); the other interface on the outside of the flange hatch cover is connected to the thin insulation tube (307); the thick insulation tube is a thick tube covered with an insulation sleeve, and the thin insulation tube is a thin tube covered with an insulation sleeve; the thin insulation tube (307) is embedded in the insulation layer of the refrigerator; the thin insulation tube (307) is connected to the inlet of the three-position three-way solenoid valve (215) of the refrigerating chamber through the thin tube (203) embedded in the insulation layer of the refrigerator; A temperature sensor 1 (205), an expansion valve 1 (214) and an evaporation pipe network 1 (204) are installed inside the freezer compartment; the insulation capillary (307) is connected to the inlet of the three-position three-way solenoid valve (215) of the refrigeration compartment through a capillary (203) embedded inside the insulation layer of the refrigerator; the outlet 1 of the three-position three-way solenoid valve (215) is connected to the expansion valve 1 (214); the expansion valve 1 (214) pipe is connected to the evaporation pipe network 1 (204); the evaporation pipe network 1 (204) pipe is connected to the refrigerant return pipe (210); the refrigerant return pipe (210) is embedded inside the insulation layer of the refrigerator; the temperature sensor 1 (205) circuit is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); The micro-freezing chamber is equipped with a temperature sensor 2 (207), an expansion valve 2 (216) and an evaporation pipe network 2 (206); the circuit of the temperature sensor 2 (207) is connected to the MCU microprocessor control circuit (100); the circuit of the MCU microprocessor control circuit (100) is connected to a three-position three-way solenoid valve (215); an outlet 2 of the three-position three-way solenoid valve (215) is connected to the expansion valve 2 (216); the expansion valve 2 (216) is connected to the evaporation pipe network 2 (206); the pipe of the evaporation pipe network 2 (206) is connected to a refrigerant return pipe (210); and the refrigerant return pipe (210) is embedded in the heat preservation layer of the refrigerator; A lighting lamp is installed on the top of the cold storage room, a door light switch is installed at the front of one side of the cold storage room, a temperature sensor 3 (209), a three-position three-way solenoid valve (215), an expansion valve 3 (217) and an evaporation pipe network 3 (208) are installed inside the cold storage room, the lighting lamp circuit is connected to the door light switch, the door light switch and the temperature sensor 3 (209) circuit are connected to the MCU microprocessor control circuit (100), and the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); the three-position three-way solenoid valve (2 15) The outlet 3 is connected to the expansion valve 3 (217), the expansion valve 3 (217) is connected to the evaporation network 3 (208), the evaporation network 3 (208) is connected to the refrigerant return pipe (210), the refrigerant return pipe (210) is embedded in the insulation layer of the refrigerator, the refrigerant return pipe (210) passes downward through the micro-freezing room, the freezing room and the condensing water storage water heater room, enters the equipment room and is connected to the gas-liquid separation tank (211), and the gas-liquid separation tank (211) is connected to the compressor (202), thereby forming a refrigerant circulation.

[0018] Embodiment 2 of the present invention uses a composite refrigerator that is split into two parts, and a condensing water storage type water heater, as an example to illustrate the scope of patent protection; based on the same principle, a refrigerator that has water heater function and is composed of a composite refrigerator (200) that is integrated left and right or front and back, and a condensing water storage type water heater (300) is also within the scope of protection.

[0019] An introduction to the working principle of a refrigerator with water heater function A refrigerator with a water heater function comprises an MCU microprocessor control circuit (100), a composite refrigerator (200) and a condensing water storage type water heater (300); the MCU microprocessor control circuit (100) controls and manages all operations of the refrigerator with a water heater function; the composite refrigerator (200) is responsible for refrigerator refrigeration, and the condensing water storage type water heater (300) is responsible for water heating; the condensing water storage type water heater (300) must be filled with water and have a condensing load before the refrigerator with a water heater function can be used; First, the condensing water storage water heater (300) is filled with water; first, the hot water outlet pipe (306) switch is turned on, and then the tap water inlet pipe (302) switch is turned on until the tap water fills the oil barrel-shaped water storage tank (310), and the tap water flows out from the hot water outlet pipe (306), and then the hot water outlet pipe (306) switch is turned off, and the tap water inlet pipe (302) switch remains turned on, and the oil barrel-shaped water storage tank (310) remains filled; The power supply of the refrigerator with water heater function is turned on; the MCU microprocessor control circuit (100) starts to work, monitors the water temperature inside the condensing water storage water heater (300), the temperature of the cold storage chamber (201.4), the temperature of the micro-freezing chamber (201.3) and the temperature of the freezing chamber (201.2), and the display module displays the upper and lower water temperatures inside the condensing water storage water heater (300), the temperature of the cold storage chamber (201.4), the temperature of the micro-freezing chamber (201.3) and the temperature of the freezing chamber (201.2); the MCU microprocessor control circuit (100) opens the three outlets of the three-position three-way solenoid valve (215); initially, the upper and lower water temperatures inside the condensing water storage water heater (300) are the same, that is, water temperature 1 and water temperature 2 are the same; The MCU microprocessor control circuit (100) starts the compressor (202) to work; the compressor (202) sucks in low-temperature and low-pressure refrigerant gas and pumps out high-temperature and high-pressure refrigerant gas, and the high-temperature and high-pressure refrigerant gas passes through the three-way valve (212) and the insulation thick pipe (308) and enters the condenser pipe network (304) that has been evacuated; the high-temperature and high-pressure refrigerant gas undergoes phase change and releases heat in the condenser pipe network (304), and the condenser pipe network (304) heats the water inside the condensing water storage water heater (300); at this time, the water temperature 2 starts to rise; The MCU microprocessor control circuit (100) receives the temperature signals of each chamber from the temperature sensor 1, the temperature sensor 2 and the temperature sensor 3, and starts the three-position three-way solenoid valve (215) to open the corresponding outlet; The medium-temperature medium-pressure refrigerant liquid enters the expansion valve 1 (214) through the insulating capillary (307), the two-way valve (213) switch, the capillary (203) embedded in the refrigerator insulation layer, and the three-position three-way solenoid valve outlet 1; it exits the expansion valve 1 (214) and enters the evaporation pipe network 1 (204), where the pressure suddenly decreases, and part of the medium-temperature medium-pressure refrigerant liquid absorbs heat and changes into low-temperature and low-pressure refrigerant gas, causing the internal temperature of the freezing chamber (201.2) around the evaporation pipe network 1 (204) to drop suddenly; the low-temperature and low-pressure refrigerant gas enters the refrigerant return pipe; The medium-temperature medium-pressure refrigerant liquid enters the expansion valve 2 (216) through the outlet 2 of the three-position three-way solenoid valve; it exits the expansion valve 2 (216) and enters the evaporation pipe network 2 (206), and the medium-temperature medium-pressure refrigerant liquid enters the evaporation pipe network 2 (206) along the pipe. Part of the medium-temperature medium-pressure refrigerant liquid continues to absorb heat and changes into low-temperature and low-pressure refrigerant gas, and the temperature of the micro-freezing chamber around the evaporation pipe network 2 (206) also drops suddenly; the low-temperature and low-pressure refrigerant gas enters the refrigerant return pipe; The medium-temperature medium-pressure refrigerant liquid enters the expansion valve 3 (217) through the outlet 3 of the three-position three-way solenoid valve; it exits the expansion valve 3 (217) and enters the evaporation pipe network 3 (208); in the evaporation pipe network 3 (208), most of the medium-temperature medium-pressure refrigerant liquid absorbs heat and changes into low-temperature and low-pressure refrigerant gas, and the temperature of the cold storage room (201.4) around the evaporation pipe network 3 (208) also drops; the low-temperature and low-pressure refrigerant gas enters the refrigerant return pipe; Subsequently, the low-temperature and low-pressure refrigerant gas enters the gas-liquid separation tank (211) along the refrigerant return pipe (210), and the low-temperature and low-pressure refrigerant gas exiting the outlet of the gas-liquid separation tank (211) enters the compressor (202) again, entering the refrigerant circulation process.

[0020] The temperature of each chamber inside the composite refrigerator (200) continues to drop until reaching a set temperature; the MCU microprocessor control circuit (100) receives the temperature signals of each chamber from the temperature sensor 1, the temperature sensor 2 and the temperature sensor 3, and closes the corresponding outlets of the three-position three-way solenoid valve; if all outlets of the three-position three-way solenoid valve are closed, the MCU microprocessor control circuit (100) turns off the compressor (202) and enters a standby state.

[0021] The temperature inside the condenser water heater rises and the water temperature approaches 55 degrees. The MCU microprocessor control circuit (100) issues a prompt to release some hot water, and turns off the compressor (202) to enter a standby state. After releasing some hot water and replenishing tap water, the temperature inside the condenser water heater drops, and the MCU microprocessor control circuit (100) starts the compressor (202) again.

[0022] Calculate the quality of hot water according to the principle of conservation of energy: one kilowatt-hour of electricity is equal to 3,600,000 joules. The initial temperature of tap water is 20 degrees, the temperature difference is 35, and the specific heat capacity of water is 4,200 joules; one kilowatt-hour of electricity can heat, M=3,600,000 / (4,200*35)=24.48 kilograms. One kilowatt-hour of electricity can heat 24.48 kilograms of water to 55 degrees. The heating efficiency of the heat pump is 4.5, 24.48*4.5=110 kilograms. A refrigerator that also functions as a water heater consumes 1 kilowatt-hour of electricity per day and can produce 110 kilograms of 55-degree hot water. A double-door refrigerator consumes 3 kilowatt-hours of electricity per day and can produce 330 kilograms of 55-degree hot water, a total of 330 liters of hot water, enough for a family of four to cook, wash vegetables and take a bath.

[0023] The advantage of the present invention is that the refrigerator with water heater function has the functions of both a water heater and a refrigerator, and has a low cost, which is equivalent to buying a refrigerator and a water heater with the money for buying a refrigerator; the composite refrigerator condenser is used to replace the electric heating tube of the electric water heater, and the condenser is used to release heat to produce hot water, the heating efficiency is 4.5, and the risk of electric water heater leakage is also eliminated; tap water is used to release heat, the refrigerator refrigeration efficiency is as high as 3.5, and the total electric power efficiency is close to 8, realizing energy saving and high efficiency of household appliances.

Claims

1. A refrigerator with water heater function, characterized in that: The refrigerator with water heater function comprises an MCU microprocessor control circuit (100), a composite refrigerator (200) and a condensing water storage type water heater (300); the composite refrigerator (200) and the condensing water storage type water heater (300) form a left-right split structure; the composite refrigerator (200) comprises a heat-insulating shell (201), a compressor (202), an expansion valve (203), an evaporation pipe network 1 (204), a temperature sensor 1 (205), an evaporation pipe network 2 (206), a temperature sensor 2 (207), an evaporation pipe network 3 (208), a temperature sensor 3 (209), a refrigerant return pipe (210), and a gas-liquid separation tank. (211), a three-way valve (212), a two-way valve (213), an expansion valve 1 (214), a three-position three-way solenoid valve (215), an expansion valve 2 (216) and an expansion valve 3 (217); the length of the evaporation pipe network 1 (204) is greater than the length of the evaporation pipe network 2 (206), and the length of the evaporation pipe network 2 (206) is greater than the length of the evaporation pipe network 3 (208); the shape of the heat-insulating shell (201) of the composite refrigerator is a long cube, and the height of the long cube is greater than the length of the other sides; the long cube is divided into four layers from bottom to top, namely, the equipment room (201.1), the freezing room (201.2), the micro-freezing room (201.3) and the refrigeration room The equipment room (201.1), the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4) are of the same width and thickness; compared with the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4), the equipment room (201.1) is of the smallest height; the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4) are independently provided with front doors, namely, the freezing room front door, the micro-freezing room front door and the refrigerating room front door; an embedded dark grid display window is provided in the middle upper part of the refrigerating room front door, and the display window has a built-in display module (101); the rear of the refrigerating room An instrument compartment with a thickness of 3 cm is arranged on the side, and an MCU microprocessor module is installed in the instrument compartment; an inspection door is arranged at the back of the equipment room (201.1); a DC power supply module, a compressor (202) start, protection, and stop module, a gas-liquid separation tank (211), and a refrigerant return pipeline (210) are installed in the equipment room (201.1); the refrigerant return pipeline (210) is connected to the gas-liquid separation tank (211), the gas-liquid separation tank (211) pipeline is connected to the compressor (202) inlet, and the compressor (202) outlet is connected to the right interface of the three-way valve outside the composite refrigerator (200); at this time, the left interface and the middle interface of the three-way valve are connected, and the right interface is closed;A temperature sensor 1 (205), an expansion valve 1 (214) and an evaporation pipe network 1 (204) are installed inside the freezer (201.2); the two-way valve (213) outside the composite refrigerator (200) is closed; the two-way valve (213) is connected to the inlet of a three-position three-way solenoid valve (215) through a thin tube (203) embedded inside the refrigerator insulation layer; the outlet 1 of the three-position three-way solenoid valve (215) is connected to the expansion valve 1 (214) through a thin tube embedded inside the refrigerator insulation layer; the expansion valve 1 (214) is connected to the evaporation pipe network 1 (204) through a pipeline; the evaporation pipe network 1 (204) is connected in layers; and the evaporation pipe network 1 (204) is connected to the refrigerant return pipe (210) through a pipeline. ; The refrigerant return pipe (210) is embedded in the refrigerator insulation layer; the temperature sensor 1 (205) circuit is connected to the MCU microprocessor control circuit (100), and the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); the micro-freezing chamber is equipped with a temperature sensor 2 (207), an expansion valve 2 (216) and an evaporation pipe network 2 (206), the temperature sensor 2 (207) circuit is connected to the MCU microprocessor control circuit (100), and the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); the outlet 2 of the three-position three-way solenoid valve (215) is connected to the refrigerator insulation layer through a thin tube embedded in the refrigerator insulation layer. An expansion valve 2 (216) is connected to an evaporation pipe network 2 (206), and the evaporation pipe network 2 (206) is connected to a refrigerant return pipe (210), and the refrigerant return pipe (210) is embedded in the insulation layer of the refrigerator; a lighting lamp is installed on the top of the refrigeration chamber (201.4), a door light switch is installed on one side of the refrigeration chamber (201.4), and a temperature sensor 3 (209), a three-position three-way solenoid valve (215), an expansion valve 3 (217) and an evaporation pipe network 3 (208) are installed inside the refrigeration chamber (201.4); the lighting lamp circuit is connected to the door light switch, and the door light switch and the temperature sensor 3 (209) circuit are connected to an MCU microprocessor control circuit ( 100), the MCU microprocessor control circuit (100) is connected to a three-position three-way solenoid valve (215); the outlet 3 of the three-position three-way solenoid valve (215) is connected to an expansion valve 3 (217) through a thin tube embedded in the refrigerator insulation layer, the expansion valve 3 (217) is connected to an evaporation pipe network 3 (208), the evaporation pipe network 3 (208) is connected to a refrigerant return pipe (210), the refrigerant return pipe (210) is embedded in the refrigerator insulation layer and passes downward through a micro-freezing chamber and a freezing chamber (201.2), enters the equipment room (201.1), and is connected to a gas-liquid separation tank (211), and the gas-liquid separation tank (211) is connected to a compressor (202), thereby forming a refrigerant cycle;The condensing water storage type water heater (300) comprises an oil barrel-shaped outer shell (309), an oil barrel-shaped water storage inner tank (310), a condenser pipe network (304), a base (301), a tap water inlet pipe (302), a hot water outlet pipe (306), a water temperature sensor 1 (305) and a water temperature sensor 2 (303); the oil barrel-shaped outer shell (309) is bottomless and vertical; the oil barrel-shaped water storage inner tank (310) is installed in the oil barrel-shaped outer shell (309); the oil barrel-shaped water storage inner tank (310) is coaxial with the oil barrel-shaped outer shell (309); a heat insulating material is filled between the oil barrel-shaped water storage inner tank (310) and the oil barrel-shaped outer shell (309); and a heat insulating material is provided at the upper and lower ends of the sides of the oil barrel-shaped outer shell (309) and the oil barrel-shaped water storage inner tank (310). A through hole is provided, a tap water inlet pipe (302) is arranged in the lower through hole, a hot water outlet pipe (306) is arranged in the upper through hole, and the tap water inlet pipe (302), the hot water outlet pipe (306) and the through hole are sealed; a through hole is provided under the hot water outlet pipe (306), a water temperature sensor 1 (305) is provided inside the through hole, and the water temperature sensor 1 (305) and the corresponding through hole are sealed; a through hole is provided on the tap water inlet pipe (302), a water temperature sensor 2 (303) is installed in the through hole, and the circuits of the water temperature sensor 1 (305) and the water temperature sensor 2 (303) are connected to the MCU microprocessor control circuit (100); a flange hatch cover is provided on the lower side of the oil barrel-shaped water storage liner, and two The condenser through hole, the condenser pipe network (304) is a group of spiral metal pipes, high-temperature refrigerant gas flows inside the spiral metal pipes, and the length of the spiral metal pipes is adapted to the length of the oil barrel-shaped water storage liner; the spiral metal pipes pass through the two condenser through holes of the flange cover and are welded and fixed, and the through holes are sealed; the flange cover is covered, and the condenser pipe network (304) is inserted into the oil barrel-shaped water storage liner, and the flange cover and the oil barrel-shaped water storage liner are sealed to maintain the inside of the oil barrel-shaped water storage liner airtight; the oil barrel-shaped water storage liner (310) is fixed to the oil barrel-shaped outer shell (309) and then installed on the oil barrel-shaped base (301); the condenser pipe network (304) is preferably a copper pipe; the oil barrel-shaped water storage liner (310) has two interfaces on the outer side of the flange cover at the lower end, The condenser pipe network (304) is connected internally; an interface on the outside of the flange cover is connected to a thick insulation pipe, which is a thick pipe covered with an insulation sleeve, and the thick insulation pipe is bent 90 degrees and connected to the left interface of the three-way valve outside the composite refrigerator (200); another interface on the outside of the flange cover is connected to a thin insulation pipe, which is a thin pipe covered with an insulation sleeve, and the thin insulation pipe (307) is bent 90 degrees and connected to the two-way valve (213) outside the composite refrigerator (200), and the two-way valve (213) is closed; the two-way valve (213) and the three-way valve (212) adopt the two-way valve and three-way valve of the air conditioner; the left and middle interfaces of the three-way valve are connected; the thick insulation pipe (308) is connected to the left interface of the three-way valve, and the thin insulation pipe (307) is connected to the two-way valve (213);A vacuum pump is connected to the middle interface of the three-way valve (212), and the vacuum pump is turned on to evacuate the inside of the spiral metal tube, i.e., the condenser pipe network (304); after the inside of the spiral metal tube, i.e., the condenser pipe network (304), is evacuated, the left and middle interfaces of the three-way valve are closed, the left and right interfaces of the three-way valve are connected, and the two-way valve (213) is opened to enter the working state; the compressor (202) is started, and the high-temperature and high-pressure refrigerant gas enters the condenser pipe network (304) from the insulation thick pipe (308), undergoes phase change and releases heat, and then enters the insulation thin pipe (307), the two-way valve (213), the thin pipe (203) embedded in the insulation layer of the refrigerator, the three-position three-way solenoid valve (215), and the expansion valve 1 (214), and then enters the evaporation pipe network 1 from the expansion valve (214), undergoes phase change and absorbs heat, and then enters the refrigerant return pipe; the refrigerant return pipe (210) is embedded in the insulation layer of the refrigerator; the refrigerant gas enters the refrigerant return pipe (210), the gas-liquid separation tank (211 ) enters the compressor again to form a refrigerant cycle; the water temperature sensor 1 (305) and the water temperature sensor 2 (303) are connected to the MCU microprocessor control circuit (100); the composite refrigerator (200) and the condensing water storage water heater (300) are connected by a heat preservation thin tube (307), a heat preservation thick tube (308) and a circuit; the MCU microprocessor control circuit (100) includes an MCU microprocessor module, a DC power supply module, a display module (101) and a compressor start, protection or stop circuit module; the external mains is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) receives temperature information and comprehensively manages all operations of the refrigerator with water heater function; by the same principle, a refrigerator with water heater function composed of a composite refrigerator (200) separated from top to bottom or from front to back and a condensing water heater (300) is also within the protection scope of the present invention. ; 2. A refrigerator with water heater function as claimed in claim 1, characterized in that: The refrigerator with water heater function comprises an MCU microprocessor control circuit (100), a heat-insulating shell (201), a compressor (202), an expansion valve 1 (214), a three-position three-way solenoid valve (215), a cubic water storage tank (311), a tap water inlet pipe (302), a water temperature sensor 1 (303), a water temperature sensor 2 (305), a hot water outlet pipe (306), a condenser pipe network (304), an evaporation pipe network 1 (204), a temperature sensor 1 (205), an expansion valve 2 (216), an evaporation pipe network 2 (206), a temperature sensor 2 (207), an expansion valve 3 (217), an evaporation pipe network 3 (208), a temperature sensor a composite refrigerator comprising a cubic water storage tank (311), a tap water inlet pipe (302), a water temperature sensor 1 (303), a water temperature sensor 2 (305), a hot water outlet pipe (306), and a condenser pipe network (307). 4) composed of a condensing water storage water heater; the MCU microprocessor control circuit (100) includes an MCU microprocessor module, a DC power supply module, a display module and a compressor (202) start, protection and shutdown circuit module, and the external AC power is connected to the MCU microprocessor control circuit (100); the MCU microprocessor control circuit (100) accepts comprehensive management of all operations of the refrigerator with water heater function; the shape of the insulation shell (201) is a long cube, and the height of the long cube is greater than the other side lengths; the insulation shell (201) is divided into five layers from bottom to top, namely, an equipment room (201.1), a condensing water storage water heater room (201.5), a freezer room (201.2 ), a micro-freezing room (201.3) and a refrigerating room (201.4). Compared with the condensing water storage water heater room, the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4), the equipment room has the smallest height, and the length and thickness of each room are the same; the freezing room (201.2), the micro-freezing room (201.3) and the refrigerating room (201.4) are independently provided with front doors, namely, the front door of the freezing room, the front door of the micro-freezing room and the front door of the refrigerating room; an inspection door is provided at the back of the water heater room (201.5) and the equipment room (201.1); the condensing water storage water heater (300) is installed on the second layer of the composite refrigerator, forming a refrigerator with an upper and lower integrated structure and a water heater function;A DC power supply module, a compressor (202) start-up and protection module, a gas-liquid separation tank (211) and a refrigerant return pipe (210) are installed in the equipment room, the refrigerant return pipe (210) is connected to the gas-liquid separation tank (211), the gas-liquid separation tank (211) pipe is connected to the compressor (202) inlet, and the compressor (202) high-pressure outlet is connected to the insulation thick pipe (308); a cubic water storage tank (311) is installed in the water heater room, and the size of the cubic water storage tank (311) is adapted to the internal size of the condensing water storage water heater room; through holes are provided at the upper and lower ends of the sides of the insulation shell (201) and the cubic water storage tank (311), and a through hole is provided at the lower end. A tap water inlet pipe (302) is arranged in the hole, and a hot water outlet pipe (306) is arranged in the upper through hole; a through hole is arranged on the tap water inlet pipe (302) on the side of the cubic water storage inner tank (311), and a water temperature sensor 1 (303) is arranged in the through hole; a through hole is arranged under the hot water outlet pipe (306) on the side of the cubic water storage inner tank (311), and a water temperature sensor 2 (305) is arranged in the through hole; the tap water inlet pipe (302), the water temperature sensor 1 (303), the water temperature sensor 2 (305) and the hot water outlet pipe (306) and their through holes are sealed; the water temperature sensor 1 (303) and the water temperature sensor 2 (305) are connected to the circuit The MCU microprocessor control circuit (100) is connected; a flange hatch cover is provided on the other side of the cubic water storage liner (311), and two condenser through holes are provided in the middle of the flange hatch cover; the condenser pipe network (304) is a group of spiral metal pipes, and high-temperature refrigerant gas flows inside the spiral metal pipes. The length of the spiral metal pipes is adapted to the length of the cubic water storage liner (311); the spiral metal pipes pass through the two condenser through holes of the flange hatch cover and are welded and fixed, and the spiral metal pipes and the through holes are sealed; the flange hatch cover is covered, and the condenser pipe network (304) is inserted into the cubic water storage liner (311), and the flange hatch cover and the cubic water storage liner (311) are connected. Sealed, maintaining the interior of the cubic water storage tank (311) sealed; the condenser pipe network (304) is preferably a copper tube; the cubic water storage tank (311) has two interfaces on the outside of the flange hatch cover, one interface on the outside of the flange hatch cover is connected to the insulation thick tube (308); the other interface on the outside of the flange hatch cover is connected to the insulation thin tube (307); the insulation thick tube is a thick tube covered with an insulation sleeve, and the insulation thin tube is a thin tube covered with an insulation sleeve; the insulation thin tube (307) is embedded in the insulation layer of the refrigerator; the insulation thin tube (307) is connected to the inlet of the three-position three-way solenoid valve (215) of the refrigeration chamber through the thin tube (203) embedded in the insulation layer of the refrigerator;A temperature sensor 1 (205), an expansion valve 1 (214) and an evaporation pipe network 1 (204) are installed inside the freezer compartment; a thermal insulation capillary (307) is connected to an inlet of a three-position three-way solenoid valve (215) of the refrigerator compartment through a capillary (203) embedded inside the thermal insulation layer of the refrigerator; an outlet 1 of the three-position three-way solenoid valve (215) is connected to the expansion valve 1 (214); a pipe of the expansion valve 1 (214) is connected to the evaporation pipe network 1 (204); a pipe of the evaporation pipe network 1 (204) is connected to a refrigerant return pipe (210); the refrigerant return pipe (210) is embedded inside the thermal insulation layer of the refrigerator; a circuit of the temperature sensor 1 (205) is connected to an MCU microprocessor control circuit The circuit (100) of the MCU microprocessor control circuit (100) is connected to a three-position three-way solenoid valve (215); a temperature sensor 2 (207), an expansion valve 2 (216) and an evaporation pipe network 2 (206) are installed in the micro-freezing chamber; the circuit of the temperature sensor 2 (207) is connected to the MCU microprocessor control circuit (100); the circuit of the MCU microprocessor control circuit (100) is connected to the three-position three-way solenoid valve (215); an outlet 2 of the three-position three-way solenoid valve (215) is connected to the expansion valve 2 (216); the expansion valve 2 (216) is connected to the evaporation pipe network 2 (206); the pipe of the evaporation pipe network 2 (206) is connected to the refrigerant return pipe (21 0); a refrigerant return pipe (210) is embedded in the insulation layer of the refrigerator; a lighting lamp is installed on the top of the refrigerator compartment, a door light switch is installed on the front side of the refrigerator compartment, a temperature sensor 3 (209), a three-position three-way solenoid valve (215), an expansion valve 3 (217) and an evaporation pipe network 3 (208) are installed inside the refrigerator compartment, the lighting lamp circuit is connected to the door light switch, the door light switch and the temperature sensor 3 (209) circuit are connected to the MCU microprocessor control circuit (100), the MCU microprocessor control circuit (100) circuit is connected to the three-position three-way solenoid valve (215); the outlet 3 of the three-position three-way solenoid valve (215) is connected to the expansion valve 3 (217), the expansion valve 3 (217) is connected to the evaporation pipe network 3 (208), and the evaporation pipe network 3 (208) pipe is connected to the refrigerant return pipe (210), and the refrigerant return pipe (210) is embedded in the refrigerator insulation layer. The refrigerant return pipe (210) passes downward through the micro-freezing chamber, the freezing chamber and the condensing water storage type water heater chamber, and enters the equipment chamber. The pipe is connected to the gas-liquid separation tank (211), and the gas-liquid separation tank (211) is connected to the compressor (202), forming a refrigerant cycle; the same principle, a refrigerator with water heater function composed of a left-right integrated or upper-lower integrated or front-back integrated composite refrigerator (200) and a condensing water heater (300) is also within the protection scope of the present invention. ;

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