Closed energy-saving air energy central hot water system

Abstract

The utility model discloses a closed type energy-saving air energy central hot water system, which relates to the technical field of water heaters, and comprises a water storage component and a heat pump main machine, the water storage component comprises a heating water tank, a heat storage water tank and a water replenishing water tank, and a water inlet at the top end of the heating water tank is fixedly connected with a hot water outlet pipe; and the other end of the hot water outlet pipe is fixedly connected with the heat pump host. According to the closed type energy-saving air energy central hot water system, the water storage assembly is formed by connecting the heating water tank, the heat storage water tank and the water supplementing water tank in series and in parallel, cold water and hot water are stored separately, the water mixing phenomenon is avoided, after water in the heating water tank is heated, the hot water can move towards the heat storage water tank till the water supplementing water tank is filled with the hot water, and the water supplementing water tank is not filled with the hot water. During use, hot water flows from the hot water supply pipe to the water utilization equipment and the water replenishing tank for water replenishing operation, so that the condition of serious water mixing of an open system is avoided, the water temperature can be kept constant, the heating efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and more specifically to a closed energy-saving air-energy central water heating system. Background Art

[0002] A water heater is a device that uses various physical principles to increase the temperature of cold water into hot water within a certain period of time. According to different principles, it can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic water heaters, air water heaters, heating water heaters, etc. The existing air water heater is a host with a water tank, and the host directly circulates and heats the water in the water tank.

[0003] A water heater assembly and a water heater are disclosed in the Chinese utility model patent application number: CN219222850U, the structure of which includes a water tank and a partition, the partition is arranged in the water tank, and the partition divides the water tank into a first accommodating chamber and a second accommodating chamber that are interconnected, the volume of the first accommodating chamber is smaller than the volume of the second accommodating chamber; a water use unit, the water use unit has a first connecting pipe and a return pipe, the first connecting pipe and the return pipe are both connected to the first accommodating chamber. In this water heater assembly and water heater, when the first accommodating chamber uses a part of the water, the water in the second accommodating chamber will be supplemented to the first accommodating chamber, and cold water will be added to the second accommodating chamber. At this time, the second accommodating chamber will produce mixed water. When the first accommodating chamber continues to use water, the mixed water inside the second accommodating chamber will flow to the first accommodating chamber, causing the first accommodating chamber to also have mixed water, and the water temperature will immediately drop, and the temperature will fluctuate between hot and cold, and the temperature will also be unstable.

[0004] The current air-to-water hot water system also has the following problems:

[0005] The conversion efficiency of air energy for heating cold water is the highest, while the conversion efficiency for heating warm water is relatively low. The traditional hot water system mainly heats a box of warm water most of the time, with low conversion efficiency, which also affects the end-user water experience. Once the water tank is filled with cold water, the water mixing is particularly serious, the water temperature will drop immediately, and it will be hot and cold, the temperature is unstable, and the energy consumption is high. Moreover, the air-energy water heaters in the north will produce a lot of scale after heating. The air-energy water heater box is basically closed and very difficult to clean. Scaling will cause corrosion damage under the scale, causing perforation and leakage of the equipment, shortening the service life of the equipment, and bringing a lot of inconvenience to users. Incidents of water heaters exploding due to scale are often seen in the news, which poses a safety hazard. Long-term use will also lead to blockage of the shower head, resulting in poor water flow and affecting the user experience.

[0006] Therefore, it is necessary to propose a closed energy-saving air-energy central hot water system to solve the above problems. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The purpose of the utility model is to solve the problems raised in the above background technology and provide a closed energy-saving air-energy central water heating system.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0011] A closed energy-saving air-energy central hot water system, comprising a water storage component and a heat pump host, wherein the water storage component comprises a heating water tank, a hot water storage tank, and a water replenishment tank, wherein a water inlet at the top of the heating water tank is fixedly connected to a hot water outlet pipe, and the other end of the hot water outlet pipe is fixedly connected to the heat pump host;

[0012] The tops of the heating water tank and the hot water storage tank are provided with a water inlet and a water outlet, the top of the water replenishment water tank is provided with a water inlet, and the bottom of the water replenishment water tank is provided with a water replenishment inlet and a cold water outlet;

[0013] A circulation port is provided at the bottom of the heating water tank, a circulation pipe is fixedly connected to the circulation port of the heating water tank, the circulation pipe is connected to the water inlet of the heat pump host, a heat pump circulation pump is installed on the circulation pipe, a hot water overflow pipe located at the bottom of the cylinder is fixedly connected to the water outlet end of the heating water tank, and the other end of the hot water overflow pipe is connected to the hot water storage tank;

[0014] The hot water storage tank and the top of the water supply tank are fixedly connected with a connecting pipe, and the hot water storage tank can be provided in multiple numbers, and the multiple hot water storage tanks are connected with the water supply tank through the connecting pipe, and the water inlet at one end of the connecting pipe is located at the bottom of the water tank, and the water outlet at the other end of the connecting pipe is located at the top of the water tank;

[0015] The cold water outlet of the water replenishment tank is fixedly connected with a cold water inlet pipe, and the other end of the cold water inlet pipe is connected with a circulation pipe.

[0016] Preferably, an electric three-way valve is fixedly connected to the circulation pipe, and one end of the cold water inlet pipe is fixedly connected to the electric three-way valve.

[0017] Preferably, the hot water overflow pipe is fixedly connected to the water inlet of the hot water storage tank, the water outlet of the hot water storage tank is fixedly connected to a connecting pipe located at the bottom of the cylinder, and one end of the connecting pipe is fixedly connected to the water inlet of the water replenishment tank.

[0018] Preferably, a hot water supply pipe is fixedly connected to the middle of the hot water overflow pipe, one end of the hot water supply pipe is connected to the water inlet of an external water-using device, and an automatic exhaust valve is fixedly connected to the middle of the hot water supply pipe.

[0019] Preferably, the water replenishment inlet of the water replenishment tank is fixedly connected with a water replenishment pipeline, one end of the water replenishment pipeline is connected to the external water inlet pipe, and the middle part of the water replenishment pipeline is fixedly connected with a hot water return pipe, an expansion tank and a backflow preventer.

[0020] Preferably, a return water circulation pump, a return water temperature sensor and an electric two-way valve are fixedly connected to the hot water return pipe, and the hot water return pipe is connected to a return water pipe of an external water-using device.

[0021] Preferably, temperature sensors are installed on the heating water tank, the hot water storage tank and the water replenishment tank, and the temperature sensors and the return water temperature sensors are connected to the electric three-way valve signal.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The water storage component consists of a heating water tank, a hot water storage tank, and a make-up water tank connected in series and in parallel. The cold and hot water are stored separately, and there will be no water mixing. When the water in the heating water tank is heated, the hot water will move to the hot water storage tank until the make-up water tank is also filled with hot water. When in use, the hot water flows from the hot water supply pipe to the water-using equipment, the make-up water tank performs the water replenishment operation, and is heated by the heat pump host and put into use, avoiding the serious water mixing in the open system and being able to keep the water temperature constant.

[0024] 2. An electric two-way valve, a return water circulation pump, an expansion tank, a backflow preventer and a return water temperature sensor are added to the water supply pipeline, which can detect and control the water flow after circulation, improve the control ability of the return water during use, and can heat it autonomously when the water temperature is too low, thereby improving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main equipment in the utility model;

[0026] Figure 2 It is a schematic diagram of the pipeline structure in the utility model.

[0027] Reference numerals:

[0028] 101. Water storage assembly; 102. Heating water tank; 103. Hot water storage tank; 104. Make-up water tank; 105. Electric three-way valve; 106. Heat pump circulation pump; 107. Heat pump main unit; 108. Automatic exhaust valve; 109. Electric two-way valve; 110. Return water circulation pump; 111. Expansion tank; 112. Backflow preventer; 113. Return water temperature sensor; 201. Hot water outlet pipe; 202. Hot water overflow pipe; 203. Connecting pipe; 204. Cold water inlet pipe; 205. Circulation pipe; 206. Hot water supply pipe; 207. Hot water return pipe; 208. Make-up water pipeline. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 and Figure 2 A closed energy-saving air-energy central hot water system comprises a water storage component 101 and a heat pump host 107. The water storage component 101 comprises a heating water tank 102, a hot water storage tank 103 and a water supply tank 104. The heating water tank 102, the hot water storage tank 103 and the water supply tank 104 are connected in series. The heated hot water will flow from the hot water tank to the hot water storage tank 103 until the water supply tank 104 is filled with hot water. A temperature detection device is installed on the tank body. The temperature detection device is connected to the electric three-way valve 105 by signal. A hot water outlet pipe 201 is fixedly connected to the water inlet at the top of the heating water tank 102. The other end of the hot water outlet pipe 201 is fixedly connected to the heat pump host 107.

[0031] The tops of the heating water tank 102 and the hot water storage tank 103 are provided with a water inlet and a water outlet. The top of the water supply tank 104 is provided with a water inlet. The pipe of the water inlet is located at the top of the tank body. The pipe on the water outlet goes deep into the tank body. The bottom of the water supply tank 104 is provided with a water supply inlet and a cold water outlet. The incoming cold water will first enter the water supply tank 104, and then reach the heat pump host 107 through the cold water inlet pipe 204;

[0032] A circulation port is provided at the bottom of the heating water tank 102, and a circulation pipe 205 is fixedly connected to the circulation port of the heating water tank 102, and the circulation pipe 205 is connected to the water inlet of the heat pump host 107. A heat pump circulation pump 106 is installed on the circulation pipe 205. The hot water outlet pipe 201 and the circulation pipe 205 connect the heating water tank 102 and the heat pump host 107 to form an annular loop, and the water in the heating water tank 102 can be heated by the heat pump circulation pump 106. The water outlet end of the heating water tank 102 is fixedly connected to a hot water overflow pipe 202 located at the bottom of the cylinder, and the other end of the hot water overflow pipe 202 is connected to the hot water storage tank 103;

[0033] A connecting pipe 203 is fixedly connected to the top of the hot water storage tank 103 and the water supply tank 104. The hot water storage tank 103 can be provided in multiple numbers. The multiple hot water storage tanks 103 are connected to the water supply tank 104 through the connecting pipe 203. The water inlet at one end of the connecting pipe 203 is located at the bottom of the water tank, and the water outlet at the other end of the connecting pipe 203 is located at the top of the water tank.

[0034] The cold water outlet of the water supply tank 104 is fixedly connected to a cold water inlet pipe 204, and the other end of the cold water inlet pipe 204 is connected to a circulation pipe 205. Figure 1 and Figure 2 The hot water overflow pipe 202 and the connecting pipe 203 are used to connect the heating water tank 102, the hot water storage tank 103 and the water replenishment tank 104, and the water inlet ends of the hot water overflow pipe 202 and the connecting pipe 203 extend to the bottom of the cylinder. When the electric three-way valve 105 is used, the heating water tank 102, the heat pump circulation pump 106, the circulation pipe 205, the heat pump host 107, the filter component and the hot water outlet pipe 201 form a loop, and the heating water tank 102 is transported to the heat pump host 107 by the push of the heat pump circulation pump 106, and returns to the heating water tank 102 after heating; when the electric three-way valve 105 is switched, the water storage component 101, the cold water inlet pipe 204, the heat pump circulation pump 106, the heat pump host 107, the filter component, and the hot water outlet pipe 201 form a water flow loop. When the heat pump circulation pump 106 is started, the water in the water storage component 101 can be heated in turn through the heat pump host 107.

[0035] Specifically, the circulation pipe 205 is fixedly connected to the electric three-way valve 105 , and one end of the cold water inlet pipe 204 is fixedly connected to the electric three-way valve 105 .

[0036] Specifically, the hot water overflow pipe 202 is fixedly connected to the water inlet of the hot water storage tank 103, and the water outlet of the hot water storage tank 103 is fixedly connected to the connecting pipe 203 located at the bottom of the cylinder. The connecting pipe 203 is a series connection of multiple hot water storage tanks 103. The number of hot water storage tanks 103 can be increased according to usage to increase the storage capacity of hot water. One end of the connecting pipe 203 is fixedly connected to the water inlet of the replenishment tank 104.

[0037] Specifically, a hot water supply pipe 206 is fixedly connected to the middle of the hot water overflow pipe 202, one end of the hot water supply pipe 206 is connected to the water inlet of an external water-using device, and an automatic exhaust valve 108 is fixedly connected to the middle of the hot water supply pipe 206. The hot water supply pipe 206 is connected to the external water-using device, and is connected to the hot water return pipe 207 after passing through the water-using device to form a ring-shaped loop. The automatic exhaust valve 108 is used to discharge the air in the pipeline.

[0038] Specifically, the water replenishment inlet of the water replenishment tank 104 is fixedly connected to the water replenishment pipeline 208, one end of the water replenishment pipeline 208 is connected to the external water inlet pipe, and the middle part of the water replenishment pipeline 208 is fixedly connected to the hot water return pipe 207, the expansion tank 111 and the backflow preventer 112. The expansion tank 111 and the backflow preventer 112 have the function of preventing backflow and enhancing the stability of water flow.

[0039] Specifically, the hot water return pipe 207 is fixedly connected with a return water circulation pump 110, a return water temperature sensor 113 and an electric two-way valve 109. The hot water return pipe 207 is installed with a return water temperature sensor 113, which can detect the water in the pipe and is connected to the electric three-way valve 105 signal. According to the water temperature in the pipe, the return water circulation pump 110 and the electric two-way valve 109 are used to control the on and off of the hot water return pipe 207, and heat the water according to the water temperature in the pipe. The hot water return pipe 207 is connected to the return pipe of the external water-using equipment.

[0040] Specifically, temperature sensors are installed on the heating water tank 102, the hot water storage tank 103, and the water replenishment tank 104, and the temperature sensors and the return water temperature sensor 113 are connected to the electric three-way valve 105 signal. The electric three-way valve 105 is connected to the temperature detector signal on the heating water tank 102 and the return water temperature sensor 113 signal. When it is detected that the water temperature inside the heating water tank 102 is too low, the heating water tank 102 is connected to the heat pump host 107 for circulation heating. When it is detected that the water temperature in the hot water return pipe 207 is too low, the cold water inlet pipe 204 is connected to the heat pump host 107 to circulate and heat the water in the external water user.

[0041] In this embodiment, the heating water tank 102, the hot water storage tank 103 and the water supply tank 104 are connected in series, the water supply pipe 208 is connected to the water supply port of the water supply tank 104, and is used to supplement cold water. The water supply pipe 208 is connected to a hot water return pipe 207, and the hot water supply pipe 206 is connected to an external water-using device, and is connected to the hot water return pipe 207 after passing through the water-using device to form a hot water loop. A temperature detector is installed on the hot water return pipe 207;

[0042] When the hot water tank, the hot water storage tank 103 and the water supply tank 104 are all filled with cold water, the electric three-way valve 105 connects the heating water tank 102 and the heat pump host 107, and the heat pump circulation pump 106 delivers the water in the heating water tank 102 to the heating water tank 102, and after heating, it flows to the heating water tank 102 through the filter assembly until all the water in the heating water tank 102 is heated. When the temperature detector on the heating water tank 102 detects that the temperature is appropriate, the electric three-way valve 1 05 Connect the cold water inlet pipe 204 with the heat pump main unit 107, and the heat pump circulation pump 106 delivers the cold water in the water supply tank 104 to the heat pump main unit 107. After being heated by the heat pump main unit 107, the hot water flows to the heating water tank 102, and the hot water in the heating water tank 102 flows to the hot water storage tank 103. The water in the hot water storage tank 103 moves to the water supply tank 104 until the water in the heating water tank 102, the hot water storage tank 103 and the water supply tank 104 are all heated;

[0043] During use, hot water will flow from the hot water supply pipe 206 to external water-using equipment. When the temperature detector on the hot water return pipe 207 detects that the water temperature in the hot water return pipe 207 is too low, the electric two-way valve 109 is connected, and the electric three-way valve 105 connects the cold water inlet pipe 204 with the heat pump main unit 107. The return water circulation pump 110 and the heat pump circulation pump 106 are started, and the cold water flows through the make-up water tank 104 to the heat pump main unit 107. After being heated by the heat pump main unit 107, it is stored in the heating water tank 102. The hot water in the heating water tank 102 will flow through the hot water supply pipe 206 to external water-using equipment and be stored in the water-using equipment for convenience of next use.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed energy-saving air-energy central hot water system, comprising a water storage component (101) and a heat pump host (107), characterized in that: The water storage component (101) comprises a heating water tank (102), a hot water storage tank (103), and a water replenishment tank (104); a water inlet at the top of the heating water tank (102) is fixedly connected to a hot water outlet pipe (201); and the other end of the hot water outlet pipe (201) is fixedly connected to a heat pump host (107); The tops of the heating water tank (102) and the hot water storage tank (103) are provided with a water inlet and a water outlet, the top of the water replenishment water tank (104) is provided with a water inlet, and the bottom of the water replenishment water tank (104) is provided with a water replenishment inlet and a cold water outlet; A circulation port is provided at the bottom of the heating water tank (102), a circulation pipe (205) is fixedly connected to the circulation port of the heating water tank (102), the circulation pipe (205) is connected to the water inlet of the heat pump host (107), a heat pump circulation pump (106) is installed on the circulation pipe (205), a hot water overflow pipe (202) located at the bottom of the cylinder is fixedly connected to the water outlet end of the heating water tank (102), and the other end of the hot water overflow pipe (202) is connected to the hot water storage tank (103); A connecting pipe (203) is fixedly connected to the top of the water storage tank (103) and the water replenishment tank (104); the water storage tank (103) can be provided in plurality; the plurality of water storage tanks (103) and the water replenishment tank (104) are connected via the connecting pipe (203); a water inlet at one end of the connecting pipe (203) is located at the bottom of the water tank, and a water outlet at the other end of the connecting pipe (203) is located at the top of the water tank; The cold water outlet of the water replenishment tank (104) is fixedly connected to a cold water inlet pipe (204), and the other end of the cold water inlet pipe (204) is connected to a circulation pipe (205).

2. A closed energy-saving air-energy central hot water system according to claim 1, characterized in that: The circulation pipe (205) is fixedly connected to an electric three-way valve (105), and one end of the cold water inlet pipe (204) is fixedly connected to the electric three-way valve (105).

3. A closed energy-saving air-energy central hot water system according to claim 1, characterized in that: The hot water overflow pipe (202) is fixedly connected to the water inlet of the hot water storage tank (103), the water outlet of the hot water storage tank (103) is fixedly connected to a connecting pipe (203) located at the bottom of the cylinder, and one end of the connecting pipe (203) is fixedly connected to the water inlet of the water replenishment tank (104).

4. A closed energy-saving air-energy central hot water system according to claim 1, characterized in that: A hot water supply pipe (206) is fixedly connected to the middle of the hot water overflow pipe (202), one end of the hot water supply pipe (206) is connected to the water inlet of an external water-using device, and an automatic exhaust valve (108) is fixedly connected to the middle of the hot water supply pipe (206).

5. A closed energy-saving air-energy central hot water system according to claim 2, characterized in that: The water supply inlet of the water supply tank (104) is fixedly connected to a water supply pipeline (208), one end of which is connected to an external water inlet pipe, and the middle of the water supply pipeline (208) is fixedly connected to a hot water return pipe (207), an expansion tank (111) and a backflow preventer (112).

6. A closed energy-saving air-energy central hot water system according to claim 5, characterized in that: The hot water return pipe (207) is fixedly connected to a return water circulation pump (110), a return water temperature sensor (113) and an electric two-way valve (109). The hot water return pipe (207) is connected to a return water pipe of an external water-using device.

7. A closed energy-saving air-energy central hot water system according to claim 6, characterized in that: The heating water tank (102), the hot water storage tank (103) and the water replenishment tank (104) are equipped with temperature sensors, and the temperature sensors and the return water temperature sensor (113) are signal-connected to the electric three-way valve (105).

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