Hot water supply system

Abstract

The utility model discloses a hot water supply system which comprises a cold water replenishing pipeline, a heating water tank, a medium-temperature heating assembly, a hot water conveying pipeline, a high-temperature heat storage water tank, a high-temperature heating assembly and a hot water supply pipeline, the cold water replenishing pipeline is connected with a cold water inlet of the heating water tank, and the medium-temperature heating assembly is connected with the heating water tank. The hot water conveying pipeline is located between the heating water tank and the high-temperature heat storage water tank, the other end of the hot water conveying pipeline is connected with the high-temperature heat storage water tank, the high-temperature heating assembly is connected with the high-temperature heat storage water tank, and the hot water supply pipeline is connected with a high-temperature hot water outlet of the high-temperature heat storage water tank. The hot water supply system is provided with the air source medium-temperature heat pump, the air source high-temperature heat pump, the heating water tank and the high-temperature heat storage water tank, water in the heating water tank can be heated to a high-temperature state, the requirement for domestic water can be met, high-temperature water can be provided for industrial factory buildings and workshops, the hot water supply range is widened, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, in particular to a hot water supply system. Background Art

[0002] Heat pump water heating technology is commonly used in hotels, hospitals, office buildings and other places. In the existing technology, a heat pump system is usually used to generate hot water. The existing heat pump system is mainly composed of an air-to-water heater, a water tank, a hot water pipeline, and a variable frequency water supply pump. The air-to-water heater absorbs the low-temperature heat in the air, vaporizes the refrigerant medium, and then compresses it through a compressor to increase the temperature and pressure. The cold water in the water tank is then heated through a heat exchanger. The compressed high-temperature heat energy is used to heat the cold water to increase its temperature, thereby producing hot water. The hot water is then delivered to each user terminal through a constant pressure variable frequency water supply pump.

[0003] The air energy water heaters of the existing heat pump heating system are usually air source medium temperature heat pumps. The maximum temperature that an air source medium temperature heat pump can usually heat is 60°C. Such hot water temperature can meet the requirements of domestic water use. However, for industry, some factories and workshops sometimes require hot water temperatures higher than 60°C during the processing and production process. The hot water produced by the existing heat pump heating system cannot meet the high temperature requirements and cannot meet the hot water supply needs of factories and workshops. Utility Model Content

[0004] In response to the problems existing in the existing technology, the technical problem to be solved by the utility model is to provide a hot water supply system equipped with an air source medium-temperature heat pump, an air source high-temperature heat pump, a heating water tank, and a high-temperature water storage tank, which can heat 55°C hot water to a high-temperature state, not only to meet the domestic water demand, but also to provide high-temperature water for industrial plants and workshops, thereby increasing the range of hot water supply and improving practicality.

[0005] In order to solve the above technical problems, the utility model provides a hot water supply system, which includes a cold water replenishment pipeline, a heating water tank, a medium-temperature heating component, a hot water delivery pipeline, a high-temperature water storage tank, a high-temperature heating component, and a hot water supply pipeline. The cold water replenishment pipeline is connected to the cold water inlet of the heating water tank, the medium-temperature heating component is connected to the heating water tank, the hot water delivery pipeline is located between the heating water tank and the high-temperature water storage tank, one end of the hot water delivery pipeline is connected to the medium-temperature hot water outlet of the heating water tank, and the other end of the hot water delivery pipeline is connected to the high-temperature water storage tank, the high-temperature heating component is connected to the high-temperature water storage tank, and the hot water supply pipeline is connected to the high-temperature hot water outlet of the high-temperature water storage tank.

[0006] Furthermore, the medium-temperature heating component includes an air-source medium-temperature heat pump, a first heating circulation water pump, a medium-temperature heat pump outlet pipe, and a medium-temperature heat pump inlet pipe, one end of the medium-temperature heat pump outlet pipe is connected to the cold water outlet of the heating water tank, and the other end of the medium-temperature heat pump outlet pipe is connected to the air-source medium-temperature heat pump, the first heating circulation water pump is installed on the medium-temperature heat pump outlet pipe, one end of the medium-temperature heat pump inlet pipe is connected to the air-source medium-temperature heat pump, and the other end of the medium-temperature heat pump inlet pipe is connected to the medium-temperature hot water inlet of the heating water tank;

[0007] The high-temperature heating component includes an air-source high-temperature heat pump, a second heating circulation water pump, a high-temperature heat pump outlet pipe, and a high-temperature heat pump inlet pipe. One end of the high-temperature heat pump outlet pipe is connected to the medium-temperature hot water outlet of the high-temperature water storage tank, and the other end of the high-temperature heat pump outlet pipe is connected to the air-source high-temperature heat pump. The second heating circulation water pump is installed in the pipeline where the high-temperature heat pump outlet pipe is located. One end of the high-temperature heat pump inlet pipe is connected to the air-source high-temperature heat pump, and the other end of the high-temperature heat pump inlet pipe is connected to the high-temperature hot water inlet of the high-temperature water storage tank.

[0008] Furthermore, a first temperature sensor is installed on the side wall of the heating water tank, and a first liquid level sensor and a second liquid level sensor are installed inside the heating water tank.

[0009] Furthermore, the hot water delivery pipeline includes a hot water delivery pipe, a heat pump, and a check valve. One end of the hot water delivery pipe is connected to the heating water tank, and the other end of the hot water delivery pipe is connected to the high-temperature water storage tank. The heat pump and the check valve are installed on the hot water delivery pipe, and the check valve is located on one side of the heat pump.

[0010] Furthermore, the cold water make-up pipeline includes a make-up pipe, a Y-type filter, and a make-up solenoid valve. The front end of the make-up pipe is used to connect to the cold water network. The Y-type filter is installed at the front end of the make-up pipe. The rear end of the make-up pipe is connected to the heating water tank. The make-up solenoid valve is installed on the make-up pipe and is located between the make-up pipe and the heating water tank.

[0011] Furthermore, the hot water supply pipeline includes a high-zone hot water supply pipeline and a low-zone hot water supply pipeline, and the high-zone hot water supply pipeline and the low-zone hot water supply pipeline are connected in parallel to the high-temperature water storage tank.

[0012] Furthermore, the high-area hot water supply pipeline includes a first domestic water tank, a first high-temperature water delivery pipe, a first hot water variable frequency pump, and a high-area variable frequency boosted hot water supply pipe. One end of the first high-temperature water delivery pipe is connected to the high-temperature water storage tank, and the other end of the first high-temperature water delivery pipe is connected to the first domestic water tank. The first hot water variable frequency pump is installed on the first high-temperature water delivery pipe, and the water outlet of the first domestic water tank is connected to the high-area variable frequency boosted hot water supply pipe.

[0013] Furthermore, the low-zone hot water supply pipeline includes a second domestic water tank, a second high-temperature water delivery pipe, a second hot water variable frequency pump, and a low-zone variable frequency boosted hot water supply pipe. One end of the second high-temperature water delivery pipe is connected to the high-temperature water storage tank, and the other end of the second high-temperature water delivery pipe is connected to the second domestic water tank. The second hot water variable frequency pump is installed on the second high-temperature water delivery pipe, and the water outlet of the second domestic water tank is connected to the low-zone variable frequency boosted hot water supply pipe.

[0014] Compared with the prior art, the solution of the present invention has at least the following beneficial effects:

[0015] (1) The hot water supply system of the present invention includes a cold water supply pipeline, a heating water tank, a medium-temperature heating component, a hot water delivery pipeline, a high-temperature water storage tank, a high-temperature heating component, and a hot water supply pipeline. The cold water supply pipeline is connected to the cold water inlet of the heating water tank, the medium-temperature heating component is connected to the heating water tank, the hot water delivery pipeline is located between the heating water tank and the high-temperature water storage tank, one end of the hot water delivery pipeline is connected to the medium-temperature hot water outlet of the heating water tank, the other end of the hot water delivery pipeline is connected to the high-temperature water storage tank, the high-temperature heating component is connected to the high-temperature water storage tank, and the hot water supply pipeline is connected to the high-temperature hot water outlet of the high-temperature water storage tank. The hot water supply system of the present invention is provided with an air-source medium-temperature heat pump, an air-source high-temperature heat pump, a heating water tank, and a high-temperature water storage tank. It can heat 55°C hot water to a high-temperature state, which can not only meet the demand for domestic water, but also provide high-temperature water for industrial plants and workshops, thereby increasing the scope of hot water supply and improving practicality.

[0016] (2) The cold water supply pipeline provided by the present invention includes a supply pipe, a Y-type filter, and a supply solenoid valve. The front end of the supply pipe is used to connect to the cold water network. The Y-type filter is installed at the front end of the supply pipe. The rear end of the supply pipe is connected to the heating water tank. The supply solenoid valve is installed on the supply pipe and is located between the supply pipe and the heating water tank. The cold water is filtered by the Y-type filter to prevent impurities in the cold water from entering the heating water tank through the supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments are briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the entire system of the hot water supply system of the present utility model;

[0019] Figure 2 This is a detailed schematic diagram of the connection between the cold water supply pipeline, the heating water tank, and the medium-temperature heating component of the utility model;

[0020] Figure 3 This utility model Figure 2 A detailed enlarged diagram of part A in the middle;

[0021] Figure 4 It is a detailed schematic diagram of the connection between the hot water delivery pipeline, the high-temperature heating component, and the hot water supply pipeline evaporator of the utility model.

[0022] In the figure, cold water supply pipeline 1, supply pipe 11, Y-type filter 12, supply water solenoid valve 13, heating water tank 2, first temperature sensor 21, first liquid level sensor 22, second liquid level sensor 23, medium temperature heating component 3, air source medium temperature heat pump 31, first heating circulation water pump 32, medium temperature heat pump outlet pipe 33, medium temperature heat pump inlet pipe 34, hot water delivery pipeline 4, hot water delivery pipeline 41, hot water pump 42, check valve 43, high temperature water storage tank 5, second temperature sensor 51, third liquid level sensor 52, fourth liquid level sensor 53, high temperature heating component 6, air source high temperature heat pump 61, second heating circulation water pump 62, high temperature heat pump outlet pipe 63, High-temperature heat pump water inlet pipe 64, hot water supply pipeline 7, high-zone hot water supply pipeline 71, first domestic water tank 711, first high-temperature water delivery pipe 712, first hot water variable frequency pump 713, high-zone variable frequency boosting hot water supply pipe 714, first expansion tank 715, first pressure gauge 716, low-zone hot water supply pipeline 72, second domestic water tank 721, second high-temperature water delivery pipe 722, second hot water variable frequency pump 723, low-zone variable frequency boosting hot water supply pipe 724, second expansion tank 725, second pressure gauge 726, low-pressure zone return water pipeline 8, low-pressure return water pipe 81, low-pressure return water solenoid valve 82, high-pressure zone return water pipeline 9, high-pressure return water pipe 91, high-pressure return water solenoid valve 92. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figure 1-Figure 2As shown, the utility model provides a hot water supply system, which includes a cold water feed pipe 1, a heating water tank 2, a medium-temperature heating component 3, a hot water delivery pipe 4, a high-temperature water storage tank 5, a high-temperature heating component 6, and a hot water supply pipe 7. The cold water feed pipe 1 is connected to the cold water inlet of the heating water tank 2, the medium-temperature heating component 3 is connected to the heating water tank 2, the hot water delivery pipe 4 is located between the heating water tank 2 and the high-temperature water storage tank 5, one end of the hot water delivery pipe 4 is connected to the medium-temperature hot water outlet of the heating water tank 2, the other end of the hot water delivery pipe 4 is connected to the high-temperature water storage tank 5, the high-temperature heating component 6 is connected to the high-temperature water storage tank 5, and the hot water supply pipe 7 is connected to the high-temperature hot water outlet of the high-temperature water storage tank 5. The cold water in the heating water tank 2 is heated by the medium-temperature heating component 3 and then sent to the heating water tank 2. The medium-temperature water in the heating water tank 2 is pumped to the high-temperature water storage tank 5 through the hot water delivery pipeline 4. The medium-temperature water in the high-temperature water storage tank 5 is then heated to high temperature by the high-temperature heating component 6. The high-temperature water is sent to the user end through the hot water supply pipeline 7, which can meet the supply of high-temperature hot water and is widely used in the domestic hot water supply of residents and commercial users and industrial factories and workshops, and the hot water supply range is wider.

[0026] In the embodiment of the present utility model, the medium-temperature heating component 3 includes an air-source medium-temperature heat pump 31, a first heating circulation water pump 32, a medium-temperature heat pump outlet pipe 33, and a medium-temperature heat pump inlet pipe 34. One end of the medium-temperature heat pump outlet pipe 33 is connected to the cold water outlet of the heating water tank 2, and the other end of the medium-temperature heat pump outlet pipe 33 is connected to the air-source medium-temperature heat pump 31. The first heating circulation water pump 32 is installed on the medium-temperature heat pump outlet pipe 33, one end of the medium-temperature heat pump inlet pipe 34 is connected to the air-source medium-temperature heat pump 31, and the other end of the medium-temperature heat pump inlet pipe 34 is connected to the medium-temperature hot water inlet of the heating water tank 2. connected; the high-temperature heating component 6 includes an air source high-temperature heat pump 61, a second heating circulation water pump 62, a high-temperature heat pump outlet pipe 63, and a high-temperature heat pump inlet pipe 64, one end of the high-temperature heat pump outlet pipe 63 is connected to the medium-temperature hot water outlet of the high-temperature water storage tank 5, the other end of the high-temperature heat pump outlet pipe 63 is connected to the air source high-temperature heat pump 61, the second heating circulation water pump 62 is installed in the pipeline where the high-temperature heat pump outlet pipe 63 is located, one end of the high-temperature heat pump inlet pipe 64 is connected to the air source high-temperature heat pump 61, and the other end of the high-temperature heat pump inlet pipe 64 is connected to the high-temperature hot water inlet of the high-temperature water storage tank 5. The first heating circulation water pump 32 is used to pump out the cold water from the heating water tank 2 and send it to the air source medium-temperature heat pump 31. The air source medium-temperature heat pump 31 heats the water and sends it to the heating water tank 2. The medium-temperature water in the heating water tank 2 is pumped to the high-temperature water storage tank 5 through the hot water delivery pipeline 4. The air source high-temperature heat pump 61 is then used to heat the medium-temperature water in the high-temperature water storage tank 5 to a high temperature state. The high-temperature water is sent to the user end through the hot water supply pipeline 7 to realize the supply of high-temperature hot water. The air source medium-temperature heat pump 31 is used to first heat the cold water to the high-temperature water storage tank 5, and then the air source high-temperature heat pump 61 is used to heat the medium-temperature water in the high-temperature water storage tank 5 to a high temperature, thereby avoiding the manufacture of a larger high-temperature water storage tank 5, thereby effectively reducing the production cost of the high-temperature water storage tank 5.

[0027] In specific implementation, the maximum water outlet temperature of the air source medium-temperature heat pump 31 adopted in the utility model is 60°C, the input power is 9.52kw, and the maximum water outlet temperature of the air source high-temperature heat pump 61 is 85°C, the input power is 15.52kw. In specific implementation, the air source medium-temperature heat pump 31 can be set to heat the water in the heating water tank 2 at 55°C, that is, the temperature of the medium-temperature water is 55°C, and the air source high-temperature heat pump 61 can heat the medium-temperature water in the high-temperature water storage tank 5 at 80°C, that is, the temperature of the high-temperature water is 80°C. When the water in the heating water tank 2 is heated to 55°C medium-temperature water, the hot water delivery pipeline 4 delivers 55°C water to the high-temperature water storage tank 5, turns on the second heating circulation water pump 62, and then starts the air source high-temperature heat pump 61 to heat the 55°C water.

[0028] In specific implementation, the upper part of the heating water tank 2 of the utility model is provided with a cold water inlet and a cold water outlet, and the cold water inlet is located on one side of the cold water outlet. The lower part of the heating water tank 2 is provided with a medium-temperature hot water inlet and a medium-temperature hot water outlet, and the medium-temperature hot water inlet is located on one side of the medium-temperature hot water outlet. The medium-temperature hot water outlet at the lower part of the heating water tank 2 is connected to the high-temperature water storage tank 5 through the hot water delivery pipeline 4.

[0029] In an embodiment of the present utility model, the high-temperature water storage tank 5 is also connected to a low-pressure area return water pipe 8 and a high-pressure area return water pipe 9. The low-pressure area return water pipe 8 is located on one side of the high-pressure area return water pipe 9. The low-pressure area return water pipe 8 includes a low-pressure return water pipe 81 and a low-pressure return water solenoid valve 82. One end of the low-pressure return water pipe 81 is connected to the high-temperature water storage tank 5, and the low-pressure return water solenoid valve 82 is installed on the low-pressure return water pipe 81; the high-pressure area return water pipe 9 includes a high-pressure return water pipe 91 and a high-pressure return water solenoid valve 92. One end of the high-pressure return water pipe 91 is connected to the high-temperature water storage tank 5, and the high-pressure return water solenoid valve 92 is installed on the high-pressure return water pipe 91; the low-pressure area self-pressure hot water supply, the high-pressure boosted hot water supply, the low-pressure return water solenoid valve 82 and the high-pressure return water solenoid valve 92 of the hot water supply system are independently controlled to open without affecting each other.

[0030] The utility model has a first temperature sensor 21 installed on the side wall of the heating water tank 2, and a first liquid level sensor 22 and a second liquid level sensor 23 installed inside the heating water tank 2. The first liquid level sensor 22 can be used to measure the replenishing water level inside the heating water tank 2, the second liquid level sensor 23 is used to measure the liquid level of the medium-temperature hot water inside the heating water tank 2, and the first temperature sensor 21 is used to measure the water temperature inside the heating water tank 2.

[0031] In a specific implementation, the present invention includes a second temperature sensor 51 mounted on the side wall of the high-temperature water storage tank 5, and a third liquid level sensor 52 and a fourth liquid level sensor 53 mounted inside the high-temperature water storage tank 5. The third liquid level sensor 52 measures the medium-temperature water level inside the high-temperature water storage tank 5, the fourth liquid level sensor 53 measures the level of the high-temperature hot water inside the high-temperature water storage tank 5, and the second temperature sensor 51 measures the water temperature inside the high-temperature water storage tank 5.

[0032] In the embodiment of the present invention, the hot water delivery pipeline 4 includes a hot water delivery pipe 41, a heat pump 42, and a check valve 43. One end of the hot water delivery pipe 41 is connected to the heating water tank 2, and the other end of the hot water delivery pipe 41 is connected to the high-temperature water storage tank 5. The heat pump 42 and the check valve 43 are installed on the hot water delivery pipe 41, and the check valve 43 is located on one side of the heat pump 42. When the water temperature in the heating water tank 2 reaches the set medium temperature of 55°C, the heat pump 42 is started to deliver the medium-temperature water in the heating water tank 2 to the high-temperature water storage tank 5 through the hot water delivery pipe 41, so that the air source high-temperature heat pump 61 heats the medium-temperature water to a high temperature. The check valve 43 is provided to prevent the medium-temperature hot water delivered by the hot water delivery pipe 41 from flowing back into the heating water tank 2.

[0033] like Figure 3 As shown, the cold water supply pipeline 1 of the present invention includes a supply pipe 11, a Y-type filter 12, and a supply solenoid valve 13. The front end of the supply pipe 11 is used to connect to the cold water network. The Y-type filter 12 is installed at the front end of the supply pipe 11. The rear end of the supply pipe 11 is connected to the heating water tank 2. The supply solenoid valve 13 is installed on the supply pipe 11 and is located between the supply pipe 11 and the heating water tank 2. When the supply solenoid valve 13 is activated, cold water is sent to the heating water tank 2 through the supply pipe 11. The cold water is filtered by the Y-type filter 12 to prevent impurities in the cold water from entering the heating water tank 2 through the supply pipe 11.

[0034] like Figure 4As shown, in a specific implementation, the hot water supply pipeline 7 of the utility model includes a high-zone hot water supply pipeline 71 and a low-zone hot water supply pipeline 72, and the high-zone hot water supply pipeline 71 and the low-zone hot water supply pipeline 72 are connected in parallel to the high-temperature water storage tank 5, wherein the high-zone hot water supply pipeline 71 includes a first domestic water tank 711, a first high-temperature water delivery pipe 712, a first hot water variable frequency pump 713, and a high-zone variable frequency booster hot water supply pipe 714, one end of the first high-temperature water delivery pipe 712 is connected to the high-temperature water storage tank 5, and the other end of the first high-temperature water delivery pipe 712 is connected to the first domestic water tank 711, and the first hot water variable frequency pump 713 is installed on the first high-temperature water storage tank 5. On the warm water delivery pipe 712, the outlet of the first domestic water tank 711 is connected to the high-zone variable-frequency boosted hot water supply pipe 714; the low-zone hot water supply pipeline 72 includes a second domestic water tank 721, a second high-temperature water delivery pipe 722, a second hot water variable-frequency pump 723, and a low-zone variable-frequency boosted hot water supply pipe 724. One end of the second high-temperature water delivery pipe 722 is connected to the high-temperature water storage tank 5, and the other end of the second high-temperature water delivery pipe 722 is connected to the second domestic water tank 721. The second hot water variable-frequency pump 723 is installed on the second high-temperature water delivery pipe 722, and the outlet of the second domestic water tank 721 is connected to the low-zone variable-frequency boosted hot water supply pipe 724. The high-zone hot water supply pipeline 71 includes a first expansion tank 715 and a first pressure gauge 716. The first pressure gauge 716 and the first expansion tank 715 are installed on the first high-temperature water delivery pipe 712. The first expansion tank 715 is located on one side of the first hot water variable frequency pump 713. The first pressure gauge 716 is located on one side of the first expansion tank 715. Start the first hot water variable frequency pump 713 to transport the high-temperature water in the high-temperature water storage tank 5 to the first domestic water tank 711 through the first high-temperature water delivery pipe 712, so that the high-zone variable frequency boost hot water supply pipe 714 can deliver the high-temperature water to the user end; the low-zone hot water supply pipeline 72 includes a second expansion tank 725 and a second pressure gauge 726. The second pressure gauge 726 and the second The expansion tank 725 is installed on the second high-temperature water delivery pipe 722. The second expansion tank 725 is located on one side of the second hot water variable frequency pump 723. The second pressure gauge 726 is located on one side of the second expansion tank 725. Start the second hot water variable frequency pump 723 to transport the high-temperature water in the high-temperature water storage tank 5 to the second domestic water tank 721 through the second high-temperature water delivery pipe 722, so that the low-zone variable frequency boost hot water supply pipe 724 can deliver the high-temperature water to the user end; the water pressure of the first high-temperature water delivery pipe 712 and the second high-temperature water delivery pipe 722 can be detected by the first pressure gauge 716 and the second pressure gauge 726 to ensure the normal operation of the first high-temperature water delivery pipe 712 and the second high-temperature water delivery pipe 722.

[0035] The working process of the hot water supply system of the utility model includes:

[0036] Step 1) Starting stage: When the first liquid level sensor 22 detects that the water level of the heating water tank 2 drops to the water supply level, the water supply solenoid valve 13 on the cold water supply pipeline 1 is started to replenish cold water into the heating water tank 2. When the second liquid level sensor 23 detects that the water level of the heating water tank 2 reaches the lower limit water level, the first heating circulation water pump 32 is turned on, and the air source medium temperature heat pump 31 is started to heat the cold water in the heating water tank 2. When the water level of the heating water tank 2 reaches the upper limit water level, the water supply solenoid valve 13 on the cold water supply pipeline 1 is closed; when the water in the heating water tank 2 is heated to 55°C, the air source medium temperature heat pump 31 stops running;

[0037] Step 2) Heating water tank 2 draining stage: When the water temperature in the heating water tank 2 reaches 55°C, the heat pump 42 is turned on to deliver the 55°C medium-temperature hot water in the heating water tank 2 to the high-temperature water storage tank 5; when the water level in the high-temperature water storage tank 5 reaches the upper limit or the water level in the heating water tank 2 reaches the lower limit, the heat pump 42 is turned off;

[0038] Step 3) Heating stage of the high-temperature water storage tank 5: Turn on the second heating circulation water pump 62, and then start the air-source high-temperature heat pump 61 to heat the water in the high-temperature water storage tank 5. When the water temperature in the high-temperature water storage tank 5 rises to 80°C, the air-source high-temperature heat pump 61 stops running;

[0039] Step 4) Hot water supply stage: Start the first hot water variable frequency pump 713, so that the high temperature water in the high temperature water storage tank 5 is transported to the first domestic water tank 711 through the first high temperature water delivery pipe 712, and the high temperature water can be delivered to the high pressure area user end through the high area variable frequency boost hot water supply pipe 714; start the second hot water variable frequency pump 723, so that the high temperature water in the high temperature water storage tank 5 is transported to the second domestic water tank 721 through the second high temperature water delivery pipe 722, and the high temperature water can be delivered to the low pressure area user end through the low area variable frequency boost hot water supply pipe 724.

[0040] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A hot water supply system, characterized in that: The hot water supply system includes a cold water replenishment pipeline, a heating water tank, a medium-temperature heating component, a hot water delivery pipeline, a high-temperature water storage tank, a high-temperature heating component, and a hot water supply pipeline. The cold water replenishment pipeline is connected to the cold water inlet of the heating water tank, the medium-temperature heating component is connected to the heating water tank, the hot water delivery pipeline is located between the heating water tank and the high-temperature water storage tank, one end of the hot water delivery pipeline is connected to the medium-temperature hot water outlet of the heating water tank, and the other end of the hot water delivery pipeline is connected to the high-temperature water storage tank, the high-temperature heating component is connected to the high-temperature water storage tank, and the hot water supply pipeline is connected to the high-temperature hot water outlet of the high-temperature water storage tank.

2. The hot water supply system according to claim 1, characterized in that: The medium-temperature heating component includes an air-source medium-temperature heat pump, a first heating circulation water pump, a medium-temperature heat pump outlet pipe, and a medium-temperature heat pump inlet pipe, one end of the medium-temperature heat pump outlet pipe is connected to the cold water outlet of the heating water tank, and the other end of the medium-temperature heat pump outlet pipe is connected to the air-source medium-temperature heat pump, the first heating circulation water pump is installed on the medium-temperature heat pump outlet pipe, one end of the medium-temperature heat pump inlet pipe is connected to the air-source medium-temperature heat pump, and the other end of the medium-temperature heat pump inlet pipe is connected to the medium-temperature hot water inlet of the heating water tank; The high-temperature heating component includes an air-source high-temperature heat pump, a second heating circulation water pump, a high-temperature heat pump outlet pipe, and a high-temperature heat pump inlet pipe. One end of the high-temperature heat pump outlet pipe is connected to the medium-temperature hot water outlet of the high-temperature water storage tank, and the other end of the high-temperature heat pump outlet pipe is connected to the air-source high-temperature heat pump. The second heating circulation water pump is installed in the pipeline where the high-temperature heat pump outlet pipe is located. One end of the high-temperature heat pump inlet pipe is connected to the air-source high-temperature heat pump, and the other end of the high-temperature heat pump inlet pipe is connected to the high-temperature hot water inlet of the high-temperature water storage tank.

3. The hot water supply system according to claim 1, characterized in that: A first temperature sensor is installed on the side wall of the heating water tank, and a first liquid level sensor and a second liquid level sensor are installed inside the heating water tank.

4. The hot water supply system according to claim 1, characterized in that: The hot water delivery pipeline includes a hot water delivery pipe, a heat pump, and a check valve. One end of the hot water delivery pipe is connected to the heating water tank, and the other end of the hot water delivery pipe is connected to the high-temperature water storage tank. The heat pump and the check valve are installed on the hot water delivery pipe, and the check valve is located on one side of the heat pump.

5. The hot water supply system according to claim 1, characterized in that: The cold water supply pipeline includes a supply pipe, a Y-type filter, and a supply solenoid valve. The front end of the supply pipe is used to connect to the cold water network. The Y-type filter is installed at the front end of the supply pipe. The rear end of the supply pipe is connected to the heating water tank. The supply solenoid valve is installed on the supply pipe and is located between the supply pipe and the heating water tank.

6. The hot water supply system according to claim 1, characterized in that: The hot water supply pipeline includes a high-zone hot water supply pipeline and a low-zone hot water supply pipeline, and the high-zone hot water supply pipeline and the low-zone hot water supply pipeline are connected in parallel to the high-temperature water storage tank.

7. The hot water supply system according to claim 6, characterized in that: The high-area hot water supply pipeline includes a first domestic water tank, a first high-temperature water delivery pipe, a first hot water variable frequency pump, and a high-area variable frequency boosted hot water supply pipe. One end of the first high-temperature water delivery pipe is connected to the high-temperature water storage tank, and the other end of the first high-temperature water delivery pipe is connected to the first domestic water tank. The first hot water variable frequency pump is installed on the first high-temperature water delivery pipe, and the water outlet of the first domestic water tank is connected to the high-area variable frequency boosted hot water supply pipe.

8. The hot water supply system according to claim 6, characterized in that: The low-zone hot water supply pipeline includes a second domestic water tank, a second high-temperature water delivery pipe, a second hot water variable frequency pump, and a low-zone variable frequency boosted hot water supply pipe. One end of the second high-temperature water delivery pipe is connected to the high-temperature water storage tank, and the other end of the second high-temperature water delivery pipe is connected to the second domestic water tank. The second hot water variable frequency pump is installed on the second high-temperature water delivery pipe, and the water outlet of the second domestic water tank is connected to the low-zone variable frequency boosted hot water supply pipe.

Images