[0035] Example 1
[0036] The basic structure of the heat pump heating, air conditioning, hot water dehumidification combined system of the present invention is as follows figure 1 As shown, the system includes: two heat pump refrigeration systems, the A system and the B system in the dashed box; the front-stage hot water radiator 8a and the rear-stage hot water radiator 8b, the water-air heat exchanger 10, and the auxiliary electric water heater 7. Hot water tank 11, circulating water pump 9a, solenoid valve, manual valve, temperature sensor, pressure sensor, electrical control system; heat pump refrigeration system includes: compressor 1, four-way valve 2, water heat exchanger 3a and 3b, air Heat exchanger 5, throttle 4, gas-liquid separator 6, temperature and pressure sensor; wind heat exchanger with fan; the exhaust port of the compressor is connected with the inlet of the four-way valve, and the inlet of the four-way valve Three ports are arranged on the opposite side of the air port: left port, middle port and right port; the left port of the four-way valve is connected to the inlet of the refrigerant passage of the water heat exchanger, and the outlet of the refrigerant passage of the water heat exchanger is connected to the capillary tube section. One end of the flow device is connected; the other end of the capillary tube restrictor is connected to the lower port of the refrigerant passage of the wind heat exchanger, and the upper port of the refrigerant passage of the wind heat exchanger is connected to the right port of the four-way valve; the four-way valve The middle port is connected with the inlet of the gas-liquid separator; the outlet of the gas-liquid separator is connected with the inlet of the compressor; the connected heat pump refrigeration circuit is filled with refrigerant;
[0037] Two heat pump refrigeration systems, the water heat exchangers 3a and 3b of the A system and the B system are connected in series, the inlet of the water heat exchanger is connected to the outlet of the return water main of the heating water, and the outlet of the water heat exchanger is connected in series. It is connected to the water inlet of the auxiliary electric water heater 7. The outlet of the auxiliary electric water heater is divided into two interfaces. The first interface is connected to the inlet of the water inlet main of the heating water pipe. The first solenoid valve Df1 is installed in the water inlet main; Several sets of combined water heating radiators are connected in parallel between the inlet water main and the return water main according to the heating requirements of the room, and they are arranged on the wall. figure 1 Only 2 groups are drawn in the middle, and water valves F2 are installed on the inlet and outlet branch pipes of each group; the combined water heating radiator is composed of the front-stage water heating radiator 8a and the back-stage water heating radiator 8b in series, that is, the front-stage water heating radiator The outlet of the radiator is connected with the inlet of the subsequent water heating radiator with a pipeline, the inlet of the previous water heating radiator is connected to the sub-interface of the inlet mains of the heating water circuit, and the outlet of the subsequent water heating radiator is connected to the sub-interface of the return water main The plumbing radiator is composed of several unit radiating fins in parallel, and each group of plumbing radiators is equipped with an exhaust valve Gf at the end of the upper connecting pipe, and the exhaust valve of similar shape in the example picture is marked with Gf only; A hot water circulating pump 9a is installed on the return water main pipe of the heating waterway; the second port of the water outlet of the auxiliary electric water heater 7 is connected to the water main pipe of the water-air heat exchanger, and the water-air heat exchanger 10 The return water main pipe of the heat pump refrigeration system is connected to the water inlet of the water heat exchanger 3a of the system A of the heat pump refrigeration system, and the second circulating water pump 9b is installed on the return water main pipe; between the water-air heat exchanger’s water inlet main and return water main Install one or several water-air heat exchangers 10 in parallel according to requirements, install a branch solenoid valve Df5 in each branch pipeline of the water-air heat exchanger, and the auxiliary fan of the water-air heat exchanger can be controlled according to demand Different wind speeds; the hot water tank 11 stores and provides domestic hot water. The hot water tank has three interfaces, upper, middle, and lower. The upper interface is the hot water outlet, which is connected to the outlet pipe, and the outlet valve is installed on the outlet pipe. F4, where the interface is the circulating water inlet, which is connected to the water outlet of the water heat exchanger 3b of the B system of the heat pump refrigeration system, and a second solenoid valve Df2 dedicated for living water is installed on the connecting pipe, and the lower interface is connected in parallel with two interfaces , One interface is the circulating water outlet, which is connected to the water inlet of the water heat exchanger 3a of the B system. The connecting pipe is equipped with a check valve Dx and a circulating water pump 9a. The second half of the connecting pipe behind the check valve outlet And the circulating water pump can be shared with the return water main of the heating waterway and its circulating water pump. The other interface is the tap water inlet, and the tap water inlet valve F1 is installed; the water heat exchanger of the A system and the B system is installed in the middle of the series waterway. Three solenoid valves Df3, in order to separate the domestic hot water cycle and the refrigeration and air conditioning water cycle when the A system is cooling and the B system is making hot water; in the heat pump heating, air conditioning, hot water dehumidification combined system, an auxiliary heating pipe for dehumidification is added Road L, one end of the pipe L is connected to the upper sub-interface of the pipe section between the second and third solenoid valves Df2 and Df3 of the water outlet pipe of the water heat exchanger 3b of the B system, and the other end of the pipe is connected to the heating water circuit On the sub-interface on the pipe section after the first solenoid valve DF1 of the inlet main pipe, a fourth solenoid valve Df4 is installed on the auxiliary heating pipe during dehumidification;
[0038] On the inlet pipe of system B, on the outlet pipe of the water heat exchangers of system B and A, the outlet of the auxiliary electric water heater, the outlet of the hot water tank and the return water of the water-air heat exchanger The first, second, third, fourth, fifth and sixth temperature sensors T1, T2, T3, T4, T5 and T6 are respectively arranged on the main pipe;
[0039] figure 1 Shown is the heat pump heating, air conditioning, hot water and dehumidification combined system of embodiment 1, a schematic flow diagram of the operation mode of hot water heating, hot water and hot air combined heating. When this mode is running, the A and B systems of the heat pump refrigeration system execute a heat pump cycle, such as A Or the refrigerant circulation route of B system is: compressor 1→four-way valve 2→water heat exchanger 3a or 3b→throttle 4→wind heat exchanger 5→four-way valve 2→gas-liquid separator 6→compression The hot water circulation route is: B system water heat exchanger 3b → A system water heat exchanger 3a → auxiliary electric water heater 7 → divided into two branches → the first branch through the first solenoid valve Df1 → combined plumbing Radiator 8a+8b→hot water circulating pump 9a→B system water heat exchanger 3a; the second branch passes through water-air heat exchanger 10→the second circulating water pump 9b→B system water heat exchanger 3a; control The method is: when hot water and hot air are running together, the first solenoid valve Df1, the branch solenoid valve Df5 on the branch pipe of the water-air heat exchanger, and the water valves F2 and F3 on the inlet and outlet branch pipes of the combined water heating radiator are all open ; When part of the hot water or part of the hot air heating operation is selected, close the valve of the non-operating heat exchanger branch, keep the valve of the heat exchanger branch that needs to be operated in an open state, and start the hot water circulating pump and the second circulating water pump.
[0040] figure 2 Shown is the heat pump heating, air conditioning and hot water dehumidification combined system of embodiment 1, which executes the operation mode of system A refrigeration and air conditioning and system B heat pump cycle to produce domestic hot water, and the schematic flow diagram; when this mode is running, the system A of the heat pump refrigeration system executes the refrigeration cycle, The refrigerant circulation route is: compressor 1→four-way valve 2→wind heat exchanger 5→throttle 4→water heat exchanger 3a→four-way valve 2→gas-liquid separator 6→compressor; its chilled water cycle The route is: water heat exchanger 3a of system A→water-air heat exchanger 10→second circulating water pump 9b→water heat exchanger 3a of system A; the control method is: the first and third solenoid valves Df1 and Df3 are closed, The branch solenoid valve Df5 on the branch pipeline of the water-air heat exchanger is turned on, and the second circulating water pump 9b is turned on; the B system executes the domestic hot water operation mode of heat pump circulation, and the refrigerant circulation route is: compressor 1→four-way valve 2 → Water heat exchanger 3b → Throttle 4 → Wind heat exchanger 5 → Four-way valve 2 → Gas-liquid separator 6 → Compressor 1; the hot water circulation route is: Water heat exchanger 3b of system B → No. Two solenoid valve 2→hot water tank 11→check valve Dx→hot water circulating pump 9a→water heat exchanger 3b of B system; control mode is: the second solenoid valve Df2 is opened, the first, third, and fourth solenoid valves Df1 , Df3, Df4 are closed, and the hot water circulating pump 9a is started; when hot water is taken, the tap water inlet valve F1 and the outlet valve F4 are opened.
[0041] image 3 It is a schematic diagram of the operation mode of refrigeration and dehumidification of system A and heat pump circulation hot water supplementary heating of system B in embodiment 1 of the present invention. This mode operation is performed by the refrigeration and air conditioning cycle of system A and the heat pump cycle of system B; dehumidification and refrigeration When the chilled water circulation route is the same as that of refrigeration and air conditioning; in the dehumidification auxiliary heating cycle, the hot water circulation route is: B system water heat exchanger 3a → fourth solenoid valve Df4 → combined water heating radiator 8a+8b → hot water Circulating pump 9a→B system water heat exchanger 3a; the control method is: the first, second, and third solenoid valves Df1, Df2, Df3 are closed, the fourth solenoid valve Df4 is opened, and the combined water heating radiator is on each inlet and outlet branch pipes. The water valves F2 and F3 are opened, and the hot water circulation pump 9a is started;
[0042] Figure 4 It is a schematic diagram of the first embodiment of the present invention in the cooling and defrosting of system A and the heat pump cycle hot water heating operation mode of system B. When this mode is running, the refrigerant of system A executes the refrigeration cycle, and the refrigerant of system A exchanges heat from the water flowing through The hot water in the device 3a absorbs heat and dissipates the heat in the wind heat exchanger 5, so that the frost on the fins of the wind heat exchanger is melted; while the refrigerant of the B system continues to perform the heat pump cycle, and the refrigerant passes through the wind exchange The heat exchange between the heat exchanger and the ambient air, absorbs air energy, compresses it through the compressor, and releases the sum of the compressor input work and the absorbed air energy in the water heat exchanger 3b to heat the water; the hot water circulation route of the B system is : Water heat exchanger 3b of system B→water heat exchanger 3a of system A→auxiliary electric water heater 7→first solenoid valve Df1→combined water heating radiator 8a+8b→hot water circulating pump 9a→water heat exchange of B system The control method is that the water-air heat exchanger stops running, and the branch solenoid valve Df5 on the branch pipeline is closed; the first and third solenoid valves Df1 and Df3 are opened, and the second and fourth solenoid valves are closed; hot water circulation pump Start and stop the second circulating water pump.
[0043] Figure 5 It is a schematic diagram of the operation mode of the refrigeration and defrosting of the B system and the heat pump circulation hot water heating of the A system in the embodiment 1 of the present invention. When this mode is running, the refrigerant of the B system executes the refrigeration cycle, and the refrigerant of the B system exchanges heat from the water flowing through The hot water of the device 3b absorbs heat and releases heat in the wind heat exchanger 5, so that the frost on the fins of the wind heat exchanger coil is melted; while the refrigerant of the A system continues to perform the heat pump cycle to heat the water; The hot water circulation route is: A system water heat exchanger 3a → auxiliary electric water heater 7 → first solenoid valve Df1 → combined water heating radiator 8a+8b → hot water circulation pump 9a → B system water heat exchanger 3a → The water heat exchanger 3a of system A; the control method is that the water-air heat exchanger stops running, and the branch solenoid valve Df5 on its branch pipeline is closed; the first and third solenoid valves Df1 and Df3 are open, the second and fourth solenoid valves Closed; the hot water circulating pump starts, and the second circulating water pump stops.
