Household air conditioning system heat recovery domestic hot water coupling assembly

Abstract

The invention provides a household air-conditioning system heat recovery domestic hot water coupling assembly which comprises an air-conditioning outdoor unit, an air-conditioning indoor unit, an air-conditioning indoor unit and an air-conditioning indoor unit, the first end of the air outlet pipeline communicates with the air outlet, and the second end communicates with the atmosphere; the exhaust fan is arranged in the air outlet pipeline; the heat exchange device is arranged in the air outlet pipeline; the first end of the first water supply pipe communicates with a water supply opening of the heat exchange device, and a first circulating pump and a first electric valve are installed on the first water supply pipe; the first end of the first water return pipe communicates with a water return port of the heat exchange device; the water tank is provided with a water inlet and a water outlet; the first heat exchange pipe is arranged in the water tank, and the two ends of the first heat exchange pipe are connected with the second end of the first water supply pipe and the second end of the first water return pipe correspondingly; the water inlet pipe is connected with the water inlet and is provided with a water inlet valve; the water outlet pipe is connected with the water outlet and provided with a water outlet valve and a first hot water pump. By the adoption of the air conditioner, waste heat discharged by the air conditioner outdoor unit can be prevented from being accumulated around the air conditioner outdoor unit, and domestic water can be heated through the waste heat.

Description

Technical Field

[0001] The invention relates to the technical field of air-conditioning heat recovery and utilization, and in particular to a household air-conditioning system heat recovery and domestic hot water coupling assembly. Background Art

[0002] In summer, household air conditioning systems have a lot of heat discharge from the outdoor unit, and most of the waste heat discharged by the air conditioning system is directly discharged to the outside without any recycling, resulting in heat waste. In addition, waste heat is easy to accumulate around the outdoor unit. The operation of the outdoor unit of the air conditioner depends on the ambient temperature. The higher the ambient temperature around the outdoor unit caused by heat accumulation, the lower the operating efficiency of the outdoor unit of the air conditioner, which is not conducive to the long-term stable operation of the outdoor unit of the air conditioner. Summary of the invention

[0003] In view of this, the present invention provides a household air conditioning system heat recovery domestic hot water coupling assembly to solve the above technical problems.

[0004] The heat recovery domestic hot water coupling assembly of the household air conditioning system provided by the present invention comprises:

[0005] An air conditioner outdoor unit, wherein the air conditioner outdoor unit is provided with an exhaust vent;

[0006] An air outlet duct, wherein a first end of the air outlet duct is connected to the air outlet, and a second end of the air outlet duct is connected to the atmosphere;

[0007] an exhaust fan, wherein the exhaust fan is arranged in the air outlet duct;

[0008] A heat exchange device, wherein the heat exchange device is arranged in the air outlet duct;

[0009] a first water supply pipe, a first end of which is connected to a water supply port of the heat exchange device, and a first circulation pump and a first electric valve are installed on the first water supply pipe;

[0010] a first water return pipe, wherein a first end of the first water return pipe is connected to a water return port of the heat exchange device;

[0011] A water tank, wherein the water tank is provided with a water inlet and a water outlet;

[0012] A first heat exchange tube, wherein the first heat exchange tube is disposed in the water tank, and two ends of the first heat exchange tube are respectively connected to the second end of the first water supply pipe and the second end of the first water return pipe;

[0013] A water inlet pipe, the water inlet pipe is connected to the water inlet, and a water inlet valve is installed on the water inlet pipe;

[0014] A water outlet pipe is connected to the water outlet, and a water outlet valve and a first hot water pump are installed on the water outlet pipe.

[0015] Optionally, the household air conditioning system heat recovery domestic hot water coupling assembly further includes: a filter, which is installed on the first water supply pipe.

[0016] Optionally, the household air conditioning system heat recovery domestic hot water coupling assembly further includes:

[0017] a first pressure sensor, the first pressure sensor being installed on the first water supply pipe and located at one end of the filter close to the heat exchange device;

[0018] a second pressure sensor, the second pressure sensor being installed on the first water supply pipe and located at an end of the filter away from the heat exchange device;

[0019] A controller, wherein an input end of the controller is communicatively connected to output ends of the first pressure sensor and the second pressure sensor, and an output end of the controller is communicatively connected to control ends of the first electric valve and the first circulating pump;

[0020] An alarm, wherein an input end of the alarm is communicatively connected with an output end of the controller.

[0021] Optionally, a first temperature sensor is installed on the first water supply pipe; a second temperature sensor is installed on the first water return pipe; and output ends of the first temperature sensor and the second temperature sensor are respectively communicatively connected to an input end of the controller.

[0022] Optionally, a third pressure sensor and a pressure relief valve are installed on the water tank, the output end of the third pressure sensor is communicatively connected to the input end of the controller, and the output end of the controller is communicatively connected to the control end of the pressure relief valve.

[0023] Optionally, the household air conditioning system heat recovery domestic hot water coupling assembly further includes:

[0024] A third temperature sensor, the third temperature sensor is installed in the water tank, and an output end of the third temperature sensor is communicatively connected with an input end of the controller;

[0025] Heating device;

[0026] a second water supply pipe, a first end of the second water supply pipe being connected to a water supply port of the heating device, and a second circulation pump and a second electric valve being installed on the second water supply pipe;

[0027] a second water return pipe, wherein a first end of the second water return pipe is connected to a water return port of the heating device;

[0028] A second heat exchange tube, wherein the second heat exchange tube is disposed in the water tank, and two ends of the second heat exchange tube are respectively connected to the second end of the second water supply pipe and the second end of the second water return pipe;

[0029] The output end of the controller is communicatively connected with the heating device, the second circulation pump and the control end of the second electric valve.

[0030] Optionally, the household air conditioning system heat recovery domestic hot water coupling assembly further includes:

[0031] A water supply pipe, on which a water supply valve is installed, a first end of the water supply pipe is used to connect to a water source, and a second end of the water supply pipe is connected to the water inlet pipe;

[0032] An auxiliary pipe is provided with an auxiliary valve, a first end of the auxiliary pipe is connected to the second end of the water supply pipe, and a second end of the auxiliary pipe is connected to the water outlet pipe and is located on a side of the water outlet valve away from the water tank.

[0033] Optionally, a check valve is installed on the water supply pipe.

[0034] Optionally, a first pump valve is installed on the water outlet pipe, and a spare pipeline is connected in parallel on both sides of the first pump valve and the first hot water pump, and a second pump valve and a second hot water pump are installed on the spare pipeline.

[0035] Optionally, a manual valve is installed on the first water supply pipe.

[0036] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0037] The heat recovery and domestic hot water coupling assembly of the household air conditioning system of the present invention is used to quickly extract the waste heat discharged from the air conditioner outdoor unit with the help of an exhaust fan, so that the waste heat cannot accumulate around the air conditioner outdoor unit to generate heat accumulation, prevent the ambient temperature around the air conditioner outdoor unit from being too high, and ensure that the air conditioner outdoor unit can operate stably for a long time. At the same time, the waste heat airflow flows through the heat exchange device and exchanges heat with the heat exchange medium flowing in the heat exchange device. After the heat exchange medium is heated up, it exchanges heat with the water flow in the water tank, and finally heats up the water flow in the water tank for use by the user end, making full use of the heat of the waste heat airflow discharged from the air conditioner outdoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a heat recovery domestic hot water coupling assembly for a household air conditioning system according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1: air conditioner outdoor unit; 2: air outlet duct; 3: exhaust fan; 4: heat exchange device; 5: first water supply pipe; 6: first water return pipe; 7: water tank; 8: first heat exchange pipe; 9: water inlet pipe; 10: water outlet pipe; 11: first circulation pump; 12: first electric valve; 13: water inlet valve; 14: water outlet valve; 15: first hot water pump; 16: filter; 17: first pressure sensor; 18: second pressure sensor; 19: first temperature sensor; 20: second temperature sensor device; 21: third pressure sensor; 22: pressure relief valve; 23: third temperature sensor; 24: heating device; 25: second water supply pipe; 26: second water return pipe; 27: second heat exchange pipe; 28: second circulation pump; 29: second electric valve; 30: water supply pipe; 31: auxiliary pipe; 32: water supply valve; 33: auxiliary valve; 34: check valve; 35: first pump valve; 36: spare pipeline; 37: second pump valve; 38: second hot water pump; 39: manual valve. DETAILED DESCRIPTION

[0041] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0042] Figure 1 This is a schematic diagram of a heat recovery and domestic hot water coupling assembly for a household air conditioning system according to an embodiment of the present invention. Figure 1 As shown, the heat recovery domestic hot water coupling assembly of the household air-conditioning system includes an air-conditioning outdoor unit 1, an air outlet duct 2, an exhaust fan 3, a heat exchange device 4, a first water supply pipe 5, a first water return pipe 6, a water tank 7, a first heat exchange pipe 8, a water inlet pipe 9 and a water outlet pipe 10.

[0043] The air conditioner outdoor unit 1 is provided with an exhaust outlet; the first end of the air outlet duct 2 is connected to the exhaust outlet, and the second end of the air outlet duct 2 is connected to the atmosphere; the exhaust fan 3 is arranged in the air outlet duct 2; the heat exchange device 4 is arranged in the air outlet duct 2; the first end of the first water supply pipe 5 is connected to the water supply port of the heat exchange device 4, and the first water supply pipe 5 is installed with a first circulation pump 11 and a first electric valve 12; the first end of the first return water pipe 6 is connected to the return water port of the heat exchange device 4; the water tank 7 is provided with a water inlet and a water outlet; the first heat exchange pipe 8 is arranged in the water tank 7, and the two ends of the first heat exchange pipe 8 are respectively connected to the second end of the first water supply pipe 5 and the second end of the first return water pipe 6; the water inlet pipe 9 is connected to the water inlet, and the water inlet pipe 9 is installed with a water inlet valve 13; the water outlet pipe 10 is connected to the water outlet, and the water outlet pipe 10 is installed with a water outlet valve 14 and a first hot water pump 15.

[0044] When in use, the water inlet valve 13 is opened, and after the water tank 7 is filled with water through the water inlet pipe 9, the water inlet valve 13 is closed. The air conditioner outdoor unit 1 is connected to the air conditioner indoor unit. After the air conditioning system is turned on, the exhaust fan 3, the first circulation pump 11 and the first electric valve 12 are turned on. Then, under the exhaust effect of the exhaust fan 3, the waste heat gas flows through the exhaust port of the air conditioner outdoor unit 1 and is discharged to the air outlet duct 2, and flows rapidly along the air outlet duct 2. When the waste heat gas flows through the heat exchange device 4, it exchanges heat with the heat exchange medium in the heat exchange device 4. After the heat exchange, the waste heat gas flow releases heat and the temperature decreases, and is discharged to the atmosphere through the air outlet duct 2. After the heat exchange medium absorbs the heat in the waste heat gas flow and heats up, it flows through the first water supply pipe 5 to the first heat exchange pipe 8 in the water tank 7, and exchanges heat with the water flow in the water tank 7 in the first heat exchange pipe 8. After the heat exchange, the water in the water tank 7 absorbs heat and heats up, and the heat exchange medium releases heat and lowers its temperature, and flows back to the heat exchange device 4 through the first return water pipe 6, and exchanges heat with the waste heat gas flow flowing through the heat exchange device 4 again. In this cycle, the heat exchange medium and the water in the water tank 7 are repeatedly heat exchanged. The water outlet pipe 10 is connected to the user's hot water usage end. When hot water is needed, the first hot water pump 15 and the water outlet valve 14 are turned on. Under the extraction action of the first hot water pump 15, the hot water heated by heat exchange in the water tank 7 is discharged through the water outlet pipe 10 to provide domestic hot water for the user.

[0045] The heat recovery domestic hot water coupling assembly of the household air conditioning system of the present invention is adopted, and the waste heat discharged from the air conditioner outdoor unit 1 is quickly extracted by means of the exhaust fan 3, so that the waste heat cannot accumulate around the air conditioner outdoor unit 1 to generate heat accumulation, and the ambient temperature around the air conditioner outdoor unit 1 is prevented from being too high, so as to ensure that the air conditioner outdoor unit 1 can operate stably for a long time. At the same time, the waste heat air flow flows through the heat exchange device 4, and heat exchanges with the heat exchange medium flowing in the heat exchange device 4. After the heat exchange medium is heated, heat exchanges are performed with the water flow in the water tank 7, and finally the water flow in the water tank 7 is heated for use by the user end, and the heat of the waste heat air flow discharged from the air conditioner outdoor unit 1 is fully utilized.

[0046] like Figure 1As shown, in this embodiment, there are two air-conditioning outdoor units 1, and the air outlets of the two air-conditioning outdoor units 1 are connected to the air outlet duct 2. The heat exchange device 4 can be any device that can perform heat exchange with the waste heat air flow, such as a coil. The heat exchange device 4-the first water supply pipe 5-the first heat exchange pipe 8-the first return pipe 6-the heat exchange device 4 constitutes a circulation loop of the heat exchange medium. A water inlet is provided at the bottom end of the water tank 7, and the water inlet is connected to the water inlet pipe 9 to replenish water into the water tank 7. A water outlet is provided at the top, and the water outlet pipe 10 is connected to the water outlet and extends to the bottom of the water tank 7. According to the actual application situation, the number of air-conditioning outdoor units 1 can be adjusted, and the heat exchange device 4 can use other heat exchange structure forms other than the coil. In order to prevent rainwater impurities and the like from entering the air outlet duct 2, a rain cover can also be installed at one end of the air outlet duct 2 connected to the atmosphere, and the air outlet duct 2 is covered above.

[0047] Optionally, the heat recovery domestic hot water coupling assembly of the household air conditioning system further includes a filter 16, which is installed on the first water supply pipe 5. The filter 16 is provided to filter impurities in the heat exchange medium to prevent the impurities from flowing in the circulation loop and prevent the impurities from entering the first heat exchange pipe 8 to adversely affect the heat exchange process in the water tank 7. The filter 16 can be any commercially available specification model that meets the filtering requirements, such as a Y-type filter.

[0048] Optionally, the heat recovery domestic hot water coupling assembly of the household air conditioning system also includes a first pressure sensor 17, a second pressure sensor 18, a controller (not shown) and an alarm (not shown). The first pressure sensor 17 is installed on the first water supply pipe 5 and is located at the end of the filter 16 close to the heat exchange device 4; the second pressure sensor 18 is installed on the first water supply pipe 5 and is located at the end of the filter 16 away from the heat exchange device 4; the input end of the controller is communicatively connected with the output ends of the first pressure sensor 17 and the second pressure sensor 18, and the output end of the controller is communicatively connected with the control end of the first electric valve 12 and the first circulation pump 11; the input end of the alarm is communicatively connected with the output end of the controller. By obtaining the pressure difference on both sides of the filter 16, it can be determined whether the filter 16 is blocked so that it can be replaced in time.

[0049] like Figure 1As shown, a first pressure sensor 17 and a second pressure sensor 18 are installed on both sides of the upstream and downstream of the filter 16, respectively. The first pressure sensor 17 monitors the first pressure data in the first water supply pipe 5 upstream of the filter 16, and the second pressure sensor 18 monitors the second pressure data in the first water supply pipe 5 downstream of the filter 16, and transmits the first pressure data and the second pressure data to the controller in real time, respectively. The controller calculates and obtains the pressure difference between the two according to the first pressure data and the second pressure data. When the pressure difference is greater than the set difference pre-stored in the controller, it indicates that the pressure difference in the first water supply pipe 5 on both sides of the filter 16 is too large, and the filter 16 may be blocked, affecting the normal flow of the heat exchange medium. At this time, the controller controls the alarm to sound an alarm to remind the staff that the filter 16 needs to be replaced or repaired. At the same time, the first circulation pump 11 and the first electric valve 12 are controlled to be shut down to stop the circulation of the heat exchange medium in the circulation loop. The controller obtains the pressure difference based on the pressure data upstream and downstream of the monitored filter 16, and controls the alarm to sound an alarm according to the change of the pressure difference, as well as the control logic of controlling the shutdown of the first circulation pump 11 and the first electric valve 12. This can be achieved according to the existing mature algorithm, and its specific working principle will not be repeated here.

[0050] Optionally, a first temperature sensor 19 is installed on the first water supply pipe 5; a second temperature sensor 20 is installed on the first water return pipe 6; the output ends of the first temperature sensor 19 and the second temperature sensor 20 are respectively connected to the input end of the controller. With this arrangement, the heat exchange between the heat exchange medium in the circulation loop where the heat exchange device 4 is located and the water flow in the water tank 7 can be monitored in real time by means of the temperature data of the heat exchange medium in the first water supply pipe 5 and the first water return pipe 6 monitored by the temperature sensor.

[0051] The first temperature sensor 19 monitors the water supply temperature of the heat exchange medium in the first water supply pipe 5 in real time, and the second temperature sensor 20 monitors the return water temperature of the heat exchange medium in the first return water pipe 6 in real time, and transmits the water supply temperature and the return water temperature to the controller in real time, and then the controller transmits the water supply temperature and the return water temperature to the external display device for the staff to observe in real time. The data changes of the water supply temperature and the return water temperature indicate the degree of heat exchange between the heat exchange medium and the water flow in the water tank 7. Compared with the water supply temperature of the heat exchange medium, if the return water temperature of the heat exchange medium is lower, it indicates that the heat exchange medium has more sufficient heat exchange with the water in the water tank 7; if the return water temperature is closer to the water supply temperature, it indicates that the temperature of the water in the water tank 7 is closer to the temperature of the heat exchange medium.

[0052] Optionally, a third pressure sensor 21 and a pressure relief valve 22 are installed on the water tank 7. The output end of the third pressure sensor 21 is communicatively connected to the input end of the controller, and the output end of the controller is communicatively connected to the control end of the pressure relief valve 22. The third pressure sensor 21 monitors the pressure data in the water tank 7 in real time and transmits the pressure data to the controller. When the pressure data received by the controller is greater than the high pressure value pre-stored inside it, it indicates that the pressure in the water tank 7 is too high and there is an unsafe factor. At this time, the controller controls the pressure relief valve 22 to open, and under the action of the internal high pressure, releases part of the gas and water to reduce the pressure in the water tank 7. When the pressure data received by the controller is less than the low pressure value pre-stored inside it, it indicates that the pressure in the water tank 7 is restored. At this time, the controller controls the pressure relief valve 22 to close. The control logic of the controller controlling the opening and closing of the pressure relief valve 22 according to the pressure change in the water tank 7 can be realized according to the existing mature algorithm, and its specific working principle will not be repeated here.

[0053] Optionally, the heat recovery domestic hot water coupling assembly of the household air conditioning system further includes a third temperature sensor 23, a heating device 24, a second water supply pipe 25, a second water return pipe 26, and a second heat exchange pipe 27. The third temperature sensor 23 is installed in the water tank 7, and the output end of the third temperature sensor 23 is communicatively connected to the input end of the controller; the first end of the second water supply pipe 25 is connected to the water supply port of the heating device 24, and the second circulation pump 28 and the second electric valve 29 are installed on the second water supply pipe 25; the first end of the second water return pipe 26 is connected to the water return port of the heating device 24; the second heat exchange pipe 27 is arranged in the water tank 7, and the two ends of the second heat exchange pipe 27 are respectively connected to the second end of the second water supply pipe 25 and the second end of the second water return pipe 26; the output end of the controller is communicatively connected to the control ends of the heating device 24, the second circulation pump 28, and the second electric valve 29. The waste heat air flow discharged from the air-conditioning outdoor unit 1 is within a certain temperature range and the temperature will not be too high. When the temperature of the water in the water tank 7 is too low, the heat exchange medium that has been heated by heat exchange with the waste heat air flow cannot meet the heating demand of the low-temperature water flow when performing heat exchange with the water in the water tank 7. According to the above arrangement, when the temperature of the water in the water tank 7 is too low, the heating device 24 can be started, and the heat exchange medium flowing in the circulation loop composed of the heating device 24-the second water supply pipe 25-the second heat exchange pipe 27-the second return pipe 26-the heating device 24 can be used to perform heat exchange with the water in the water tank 7. That is, the heat exchange medium in the circulation loop where the heating device 24 is located and the heat exchange medium in the circulation loop where the heat exchange device 4 is located both heat the water in the water tank 7 to meet the heat exchange demand.

[0054] The third temperature sensor 23 monitors the water temperature data in the water tank 7 in real time, and transmits the water temperature data to the controller in real time. The controller has a preset heating temperature. When the water temperature data received by the controller is less than the set heating temperature, it indicates that the temperature of the water in the water tank 7 is too low. At this time, the controller controls the start of the heating device 24 and the second circulation pump 28, and controls the second electric valve 29 to open. The heat exchange medium in the circulation loop where the heating device 24 is located is heated and heated when flowing through the heating device 24. The heated heat exchange medium flows to the second heat exchange pipe 27 in the water tank 7 through the second water supply pipe 25, and exchanges heat with the water in the water tank 7 in the second heat exchange pipe 27. The water in the water tank 7 absorbs heat to heat up, and the heat exchange medium in the second heat exchange pipe 27 releases heat to cool down. The cooled heat exchange medium flows to the heating device 24 through the second return pipe 26, and is heated and heated again, and the cycle repeats. When the water temperature data received by the controller is greater than the preset low temperature value stored internally, it indicates that the water in the water tank 7 has been heated to a certain temperature, and the heat released by the heat exchange medium in the circulation loop where the heat exchange device 4 is located is sufficient to heat the water in the water tank 7. At this time, the controller controls the heating device 24 and the second circulation pump 28 to be shut down, and controls the second electric valve 29 to be closed. The controller controls the control logic of starting and stopping the heating device 24, the second circulation pump 28 and the second electric valve 29 according to the change of the water temperature data in the water tank 7, which can be realized according to the existing mature algorithm, and its specific working principle will not be repeated here. The heating device 24 can be any structural form that can heat the pipeline, such as a gas wall-mounted boiler, an electric heating device, etc.

[0055] A filter can also be installed on the second water supply pipe 25 to filter impurities in the circulation loop. Pressure sensors can also be installed on both sides of the filter to monitor the pressure data in the second water supply pipe 25 on both sides of the filter, and transmit the two pressure data to the controller. When the pressure difference between the two is too large, the control alarm will sound an alarm to prompt the staff to replace or repair the filter in time, and at the same time control the heating device 24 and the second circulation pump 28 to stop, and control the second electric valve to close. Temperature sensors can also be installed on the second water supply pipe 25 and the second return water pipe 26 to monitor the temperature of the heat exchange medium flowing into the second heat exchange pipe 27 and the temperature of the heat exchange medium flowing out of the second heat exchange pipe 27, so as to judge the heat exchange between the heat exchange medium in the second heat exchange pipe 27 and the water in the water tank 7. A temperature sensor can also be installed on the outlet pipe 10 to monitor the temperature of the water flowing out of the outlet pipe 10.

[0056] Optionally, the heat recovery domestic hot water coupling assembly of the household air-conditioning system also includes a water supply pipe 30 and an auxiliary pipe 31. A water supply valve 32 is installed on the water supply pipe 30, and the first end of the water supply pipe 30 is used to connect to the water source, and the second end of the water supply pipe 30 is connected to the water inlet pipe 9; an auxiliary valve 33 is installed on the auxiliary pipe 31, and the first end of the auxiliary pipe 31 is connected to the second end of the water supply pipe 30, and the second end of the auxiliary pipe 31 is connected to the outlet pipe 10, and is located on the side of the outlet valve 14 away from the water tank 7. After long-term use, the water tank 7 needs regular maintenance. With the above arrangement, during the maintenance of the water tank 7, the water tank 7 can be bypassed, and the water source can be drained to the auxiliary pipe 31 through the water supply pipe 30, and further drained to the outlet pipe 10, without affecting the normal water use at the user end.

[0057] like Figure 1 As shown, in this embodiment, the auxiliary pipe 31 is arranged on the left side of the water tank 7, the upper end is connected to the water outlet pipe 10, and the lower end is connected to the water supply pipe 30. When the water tank 7 is in normal use, the water supply valve 32 and the water inlet valve 13 are opened, and the auxiliary valve 33 is closed, and the water source is injected into the water tank 7 through the water supply pipe 30 and the water inlet pipe 9. When the user end needs water, the water outlet valve 14 is opened, and the water in the water tank 7 is output to the user end through the water outlet pipe 10. When the water tank 7 needs to be repaired, the water inlet valve 13 and the water outlet valve 14 are closed. When the user end needs water, the water supply valve 32 and the auxiliary valve 33 are opened, and the water source flows into the water outlet pipe 10 through the water supply pipe 30 and the auxiliary pipe 31, and is further output to the user end.

[0058] Optionally, a check valve 34 is installed on the water supply pipe 30. The check valve 34 is installed to prevent the water flow from flowing in the water supply pipe 30 in the reverse direction.

[0059] Optionally, a first pump valve 35 is installed on the water outlet pipe 10, a backup pipeline 36 is connected in parallel on both sides of the first pump valve 35 and the first hot water pump 15, and a second pump valve 37 and a second hot water pump 38 are installed on the backup pipeline 36. With this arrangement, when the first hot water pump 15 fails, water can be supplied normally with the help of the backup pipeline 36 without shutting down the entire device.

[0060] like Figure 1 As shown, the first pump valve 35 and the first hot water pump 15 are installed at intervals on the water outlet pipe 10, the left end of the standby pipeline 36 is connected to the water outlet pipe 10 on the left side of the first pump valve 35, and the right end of the standby pipeline 36 is connected to the water outlet pipe 10 on the right side of the first hot water pump 15. In normal use, the first pump valve 35 is opened, the first hot water pump 15 is started, the second pump valve 37 is closed, and the second hot water pump 38 is shut down, then the water in the water tank 7 is transported to the user end through the first hot water pump 15. When the first hot water pump 15 fails, the second pump valve 37 is opened, the second hot water pump 38 is started, the first pump valve 35 is closed, and the first hot water pump 15 is shut down, then the water in the water tank 7 is transported to the user end through the second hot water pump 38.

[0061] Optionally, a manual valve 39 is installed on the first water supply pipe 5. The manual valve 39 is set, and when the equipment is shut down, the first electric valve 12 and the manual valve 39 are closed at the same time, which plays a double protection role to prevent the first electric valve 12 from malfunctioning and causing the pipeline to be accidentally opened.

[0062] like Figure 1 As shown, in this embodiment, manual valves 39 are installed on the first water supply pipe 5, the first water return pipe 6, the second water supply pipe 25 and the second water return pipe 26. When the equipment is activated, each manual valve 39 is opened, and the first electric valve 12 and the second electric valve 29 are used to control whether the circulation loop is connected. When the equipment is stopped as a whole, each manual valve 39 is closed.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat recovery domestic hot water coupling assembly for a household air conditioning system, characterized in that: include: An air conditioner outdoor unit, wherein the air conditioner outdoor unit is provided with an exhaust vent; An air outlet duct, wherein a first end of the air outlet duct is connected to the air outlet, and a second end of the air outlet duct is connected to the atmosphere; an exhaust fan, wherein the exhaust fan is arranged in the air outlet duct; A heat exchange device, wherein the heat exchange device is arranged in the air outlet duct; a first water supply pipe, a first end of which is connected to a water supply port of the heat exchange device, and a first circulation pump and a first electric valve are installed on the first water supply pipe; a first water return pipe, wherein a first end of the first water return pipe is connected to a water return port of the heat exchange device; A water tank, wherein the water tank is provided with a water inlet and a water outlet; A first heat exchange tube, wherein the first heat exchange tube is disposed in the water tank, and two ends of the first heat exchange tube are respectively connected to the second end of the first water supply pipe and the second end of the first water return pipe; A water inlet pipe, the water inlet pipe is connected to the water inlet, and a water inlet valve is installed on the water inlet pipe; A water outlet pipe is connected to the water outlet, and a water outlet valve and a first hot water pump are installed on the water outlet pipe.

2. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 1 is characterized in that: Also includes: A filter is installed on the first water supply pipe.

3. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 2 is characterized in that: Also includes: a first pressure sensor, the first pressure sensor being installed on the first water supply pipe and located at one end of the filter close to the heat exchange device; a second pressure sensor, the second pressure sensor being installed on the first water supply pipe and located at an end of the filter away from the heat exchange device; A controller, wherein an input end of the controller is communicatively connected to output ends of the first pressure sensor and the second pressure sensor, and an output end of the controller is communicatively connected to control ends of the first electric valve and the first circulating pump; An alarm, wherein an input end of the alarm is communicatively connected with an output end of the controller.

4. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 3 is characterized in that: A first temperature sensor is installed on the first water supply pipe; A second temperature sensor is installed on the first water return pipe; The output ends of the first temperature sensor and the second temperature sensor are respectively communicatively connected to the input end of the controller.

5. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 3 or 4, characterized in that: A third pressure sensor and a pressure relief valve are installed on the water tank. The output end of the third pressure sensor is communicatively connected to the input end of the controller, and the output end of the controller is communicatively connected to the control end of the pressure relief valve.

6. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 3 or 4, characterized in that: Also includes: A third temperature sensor, the third temperature sensor is installed in the water tank, and an output end of the third temperature sensor is communicatively connected with an input end of the controller; Heating device; a second water supply pipe, a first end of the second water supply pipe being connected to a water supply port of the heating device, and a second circulation pump and a second electric valve being installed on the second water supply pipe; a second water return pipe, wherein a first end of the second water return pipe is connected to a water return port of the heating device; A second heat exchange tube, wherein the second heat exchange tube is disposed in the water tank, and two ends of the second heat exchange tube are respectively connected to the second end of the second water supply pipe and the second end of the second water return pipe; The output end of the controller is communicatively connected with the heating device, the second circulation pump and the control end of the second electric valve.

7. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to any one of claims 1 to 4, characterized in that: Also includes: A water supply pipe, on which a water supply valve is installed, a first end of the water supply pipe is used to connect to a water source, and a second end of the water supply pipe is connected to the water inlet pipe; An auxiliary pipe is provided with an auxiliary valve, a first end of the auxiliary pipe is connected to the second end of the water supply pipe, and a second end of the auxiliary pipe is connected to the water outlet pipe and is located on a side of the water outlet valve away from the water tank.

8. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to claim 7 is characterized in that: A check valve is installed on the water supply pipe.

9. The heat recovery domestic hot water coupling assembly of a household air conditioning system according to any one of claims 1 to 4, characterized in that: A first pump valve is installed on the water outlet pipe, and a spare pipeline is connected in parallel on both sides of the first pump valve and the first hot water pump, and a second pump valve and a second hot water pump are installed on the spare pipeline.

10. The heat recovery and domestic hot water coupling assembly of a household air conditioning system according to any one of claims 1 to 4, characterized in that: A manual valve is installed on the first water supply pipe.

Images