Pressure-bearing water outlet automatic circulation heat exchange device modified from non-pressure-bearing vacuum tube solar water heater

Abstract

The utility model provides a non-pressure-bearing vacuum tube solar water heater refitted pressure-bearing water outlet automatic circulation heat exchange device which comprises a water outlet assembly and a non-pressure-bearing solar water heater, the water outlet assembly is installed at one end of an indoor wall, and the non-pressure-bearing solar water heater is located on a roof. And one side of the non-pressure-bearing solar water heater is respectively provided with a water return port and a hot water outlet. Through the design of the exhaust port, the water outlet assembly and the circulating water pump, in the using process, the circulating water pump is started, hot water in the non-pressure-bearing solar water heater is pumped into the first water inlet of the heat exchanger through the hot water outlet pipe, and the hot water returns to the water heater from the first water outlet through the water return pipeline after releasing heat in the heat exchanger, so that one-time circulation is completed; and continuous flowing of hot water in the loop is ensured, a continuous water source is provided for subsequent heating and heat exchange, and therefore the stable hot water circulation efficiency is kept, the actual service life of the non-pressure-bearing water heater is prolonged, and the use experience of a user is improved.

Description

An automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet system. Technical Field

[0001] This utility model relates to the field of vacuum tube solar water heater technology, specifically to an automatic circulating heat exchange device for modifying a non-pressurized vacuum tube solar water heater to produce pressurized water. Background Technology

[0002] As a green and renewable energy source, solar energy is increasingly being used in the field of hot water supply. Non-pressurized vacuum tube solar water heaters, with their high heat collection efficiency, simple structure, and low cost, have a large user base in urban and rural areas of my country, especially in rural markets.

[0003] However, most existing vacuum tube solar water heaters are non-pressurized. The storage container of a non-pressurized solar water heater is directly connected to the solar collector tube. Therefore, users directly use the hot water heated by solar energy without any intermediate heat exchange process. Since there is no pressure in the storage container, there is a problem of low water pressure during use, and there is also a problem of unstable water temperature when used with cold water. Summary of the Invention

[0004] The present invention aims to solve the problems mentioned in the background art by providing an automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet device.

[0005] The specific technical solution is as follows:

[0006] An automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet includes: a water outlet component and a non-pressurized solar water heater. The water outlet component is installed on one end of an indoor wall, and the non-pressurized solar water heater is located on the roof. A return water inlet and a hot water outlet are respectively provided on one side of the non-pressurized solar water heater. A return water pipe and a hot water outlet pipe are respectively connected to one end of the return water inlet and the other end of the hot water outlet pipe. The other end of the return water pipe is connected to one end of the water outlet component. An exhaust port is provided on one end of the upper surface of the non-pressurized solar water heater, and the other end of the hot water outlet pipe is connected to the inlet of a circulating water pump.

[0007] The aforementioned non-pressurized vacuum tube solar water heater is modified into a pressurized water outlet automatic circulating heat exchange device, wherein the water outlet component includes a heat exchanger, and the upper half section of one side of the heat exchanger is provided with a first inlet and a first outlet. One end of the first inlet is connected to a hot water delivery pipe, and the other end of the hot water delivery pipe is connected to the outlet of the circulating water pump through a flange. The other end of the return water pipe is connected to the first outlet. The heat exchanger is bolted to one end of the indoor wall.

[0008] The aforementioned non-pressurized vacuum tube solar water heater is modified into an automatic circulating heat exchange device with pressurized water outlet. The lower half of one side of the heat exchanger is provided with a second water outlet and a second water inlet. A domestic hot water connection pipe is installed at one end of the second water outlet. The end of the domestic hot water connection pipe away from the second water outlet can be connected to domestic hot water equipment, a washbasin, a vegetable washing basin, or a shower head.

[0009] The above-mentioned non-pressurized vacuum tube solar water heater is modified into an automatic circulating heat exchange device with pressurized water outlet, wherein one end of the second water inlet is connected to a tap water pipe, and a water flow sensing switch is installed at one end of the tap water pipe.

[0010] The aforementioned non-pressurized vacuum tube solar water heater is modified into an automatic circulating heat exchange device with pressurized water outlet. In this device, the water flow sensing switch is connected to the controller via an external wire, and the controller is installed next to the water outlet assembly.

[0011] The above-mentioned non-pressurized vacuum tube solar water heater is modified into an automatic circulating heat exchange device with pressurized water output. The controller transmits start and stop signals to the circulating water pump through an RS485 communication cable. The controller model is STM32F103C8T6.

[0012] This utility model has the following beneficial effects:

[0013] 1. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet provided by this utility model, through the design of the exhaust port, water outlet component, and circulating water pump, allows the circulating water pump to start during use, pumping the hot water in the non-pressurized solar water heater into the first inlet of the heat exchanger through the hot water outlet pipe. After the hot water releases heat in the heat exchanger, it returns to the water heater from the first outlet through the return water pipe, completing one cycle. This ensures that the hot water in the loop continues to flow, providing a continuous water source for subsequent heating and heat exchange, thereby maintaining a stable hot water circulation efficiency, extending the actual service life of the non-pressurized water heater, and improving the user experience.

[0014] 2. This utility model provides an automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet system. Through the design of a heat exchanger, controller, and water flow sensor switch, when the user turns on the domestic hot water equipment, the water flow in the tap water pipe drives the water flow sensor switch to generate an electrical signal. The controller receives the signal via an RS485 communication cable and immediately starts the circulating water pump. The circulating water pump pumps the hot water from the non-pressurized solar water heater through the hot water outlet pipe into the first inlet of the heat exchanger. After releasing heat in the heat exchanger, the hot water flows through the first outlet and the return pipe... The water returns to the non-pressurized solar water heater, forming a closed loop. Tap water enters the heat exchanger through the second inlet and exchanges heat with the circulating hot water through counter-current heat exchange. The heated pressurized tap water is then transported to the water-using terminals (domestic hot water equipment, washbasins, kitchen sinks, shower heads, etc.) through the second outlet and the domestic hot water connection pipe, ensuring stable water temperature. When water use stops, the water flow sensor switch signal disappears, and the controller delays and shuts off the circulating water pump to prevent frequent start-stop, thus solving the problems of low outlet pressure and unstable water temperature in traditional non-pressurized vacuum tube solar water heaters. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of the automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet according to an embodiment of the present invention.

[0016] Figure 2 is a partial structural schematic diagram of the automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet according to an embodiment of the present invention.

[0017] Figure 3 is a schematic diagram of the water outlet component of the automatic circulating heat exchange device for modifying a non-pressurized vacuum tube solar water heater into a pressurized water outlet according to an embodiment of this utility model.

[0018] Figure 4 is a schematic diagram of the water outlet component of the automatic circulating heat exchange device for modifying a non-pressurized vacuum tube solar water heater into a pressurized water outlet according to an embodiment of this utility model.

[0019] In the attached image:

[0020] 1. Non-pressurized solar water heater; 101. Exhaust port; 102. Return water inlet; 103. Hot water outlet; 104. Return water pipe; 105. Hot water outlet pipe;

[0021] 2. Circulating water pump;

[0022] 3. Water outlet assembly; 301. Heat exchanger; 302. First water inlet; 303. First water outlet; 304. Second water outlet; 305. Second water inlet; 306. Domestic hot water connection pipe; 307. Tap water pipe; 308. Controller; 309. Water flow sensor switch; 310. Hot water delivery pipe. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet unit provided in this embodiment is shown in Figures 1-4. It includes: an outlet assembly 3 and a non-pressurized solar water heater 1. The outlet assembly 3 is installed on one end of an indoor wall. The non-pressurized solar water heater 1 is located on the roof. A return water inlet 102 and a hot water outlet 103 are respectively provided on one side of the non-pressurized solar water heater 1. One end of the return water inlet 102 and the hot water outlet 103 is connected to a return water pipe 104 and a hot water outlet pipe 105, respectively. The other end of the return water pipe 104 is connected to one end of the outlet assembly 3. The solar water heater 1 has an exhaust port 101 on one end of its upper surface, and a hot water outlet pipe 105 is connected to the inlet of the circulating water pump 2 at the other end. The water outlet assembly 3 includes a heat exchanger 301. The upper half of one side of the heat exchanger 301 is provided with a first inlet 302 and a first outlet 303. One end of the first inlet 302 is connected to a hot water delivery pipe 310, and the other end of the hot water delivery pipe 310 is connected to the outlet of the circulating water pump 2 through a flange. The other end of the return water pipe 104 is connected to one end of the first outlet 303. The heat exchanger 301 is installed on one end of the indoor wall by bolts.

[0029] Through the design of the vent 101, water outlet component 3, and circulating water pump 2, the circulating water pump 2 starts during use, pumping the hot water in the non-pressurized solar water heater 1 into the first inlet 302 of the heat exchanger 301 through the hot water outlet pipe 105. After the hot water releases heat in the heat exchanger 301, it returns to the water heater from the first outlet 303 through the return water pipe 104, completing one cycle. This ensures that the hot water in the loop continues to flow, providing a continuous water source for subsequent heating and heat exchange, thereby maintaining a stable hot water circulation efficiency, extending the actual service life of the non-pressurized water heater, and improving the user experience. The vent 101 completely avoids the safety hazards of water tank rupture and vacuum tube bursting caused by excessive pressure in traditional pressurized systems.

[0030] Example 2

[0031] The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet provided in this embodiment is shown in Figures 3 and 4. It includes: a second outlet 304 and a second inlet 305 on the lower half of one side of the heat exchanger 301. A domestic hot water connection pipe 306 is installed at one end of the second outlet 304. To facilitate the supply of domestic hot water, domestic hot water equipment, washbasins, vegetable sinks, shower heads, etc. can be connected to the end of the domestic hot water connection pipe 306 away from the second outlet 304. A tap water pipe 307 is connected to one end of the second inlet 305. A water flow sensor switch 309 is installed at one end of the tap water pipe 307. The water flow sensor switch 309 is connected to the controller 308 through an external wire. The controller 308 is installed next to the water outlet assembly 3. The controller 308 transmits start and stop signals to the circulating water pump 2 through an RS485 communication cable. The controller 308 is model STM32F103C8T6.

[0032] Among them, the water flow sensor switch 309 can be a Hall effect water flow sensor switch of the FLS-2000 series, which can be used with the controller to realize the linkage regulation of flow rate and water pump power.

[0033] Through the design of heat exchanger 301, controller 308, and water flow sensor switch 309, when the user turns on the domestic hot water equipment, the water flow in the tap water pipe 307 drives the water flow sensor switch 309 to generate an electrical signal. The controller 308 receives the signal through the RS485 communication cable and immediately starts the circulating water pump 2. The circulating water pump 2 pumps the hot water from the non-pressurized solar water heater 1 into the first inlet 302 of the heat exchanger 301 through the hot water outlet pipe 105. After the hot water releases heat in the heat exchanger 301, it flows through the first outlet 303 and the return water pipe 10. 4. Returning to the non-pressurized solar water heater 1, a closed loop is formed. Tap water enters the heat exchanger 301 from the second inlet 305 and exchanges heat with the circulating hot water through counter-current heat exchange. The heated pressurized tap water is transported to the water terminal (domestic hot water equipment, washbasin, kitchen sink, shower head, etc.) through the second outlet 304 and the domestic hot water connection pipe 306, so that the water temperature is stable. When the water use stops, the signal of the water flow sensor switch 309 disappears, and the controller 308 shuts down the circulating water pump 2 after a delay to prevent frequent start and stop, which would affect the service life of the circulating water pump 2.

[0034] In summary, the automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized water outlet provided in this embodiment has the following advantages: by using heat exchange to transfer the heat from the non-pressurized vacuum tube solar water heater to the tap water pipe 307, and using it in a pressurized water outlet manner, the problems of low water pressure and unstable water temperature can be effectively solved.

[0035] When in use, when the user turns on the domestic hot water equipment, the water flow in the tap water pipe 307 drives the water flow sensor switch 309 to generate an electrical signal. The controller 308 receives the signal through the RS485 communication cable and immediately starts the circulating water pump 2. The circulating water pump 2 pumps the hot water in the non-pressurized solar water heater 1 into the first inlet 302 of the heat exchanger 301 through the hot water outlet pipe 105. After releasing heat in the heat exchanger 301, the hot water returns to the non-pressurized solar water heater through the first outlet 303 and the return water pipe 104. 1. A closed-loop circulation is formed. Tap water enters the heat exchanger 301 from the second inlet 305 and exchanges heat with the circulating hot water through counter-current heat exchange. The heated pressurized tap water is delivered to domestic hot water equipment, washbasins, kitchen sinks, shower heads, etc. through the second outlet 304 and the domestic hot water connection pipe 306 for use, so that the water temperature is stable. When the water use stops, the signal of the water flow sensor switch 309 disappears, and the controller 308 shuts down the circulating water pump 2 after a delay to prevent frequent start and stop and ensure the service life of the circulating water pump 2.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater, characterized in that, include: The water outlet assembly (3) and the non-pressurized solar water heater (1) are installed on one end of the indoor wall. The non-pressurized solar water heater (1) is located on the roof. The non-pressurized solar water heater (1) is provided with a return water inlet (102) and a hot water outlet (103) on one side. The return water inlet (102) and the hot water outlet (103) are respectively connected to a return water pipe (104) and a hot water outlet pipe (105). The other end of the return water pipe (104) is connected to one end of the water outlet assembly (3). The non-pressurized solar water heater (1) is provided with an exhaust port (101) on one end of the upper surface. The other end of the hot water outlet pipe (105) is connected to the inlet of the circulating water pump (2).

2. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater according to claim 1, characterized in that, The water outlet assembly (3) includes a heat exchanger (301). The upper half of one side of the heat exchanger (301) is provided with a first inlet (302) and a first outlet (303). One end of the first inlet (302) is connected to a hot water delivery pipe (310). The other end of the hot water delivery pipe (310) is connected to the outlet of the circulating water pump (2) through a flange. The other end of the return water pipe (104) is connected to one end of the first outlet (303). The heat exchanger (301) is installed on one end of the indoor wall by bolts.

3. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater according to claim 2, characterized in that, The lower half of one side of the heat exchanger (301) is provided with a second outlet (304) and a second inlet (305), and a domestic hot water connection pipe (306) is installed at one end of the second outlet (304).

4. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater according to claim 3, characterized in that, The second water inlet (305) is connected to a water pipe (307) at one end, and a water flow sensor switch (309) is installed at one end of the water pipe (307).

5. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater according to claim 4, characterized in that, The water flow sensing switch (309) is connected to the controller (308) via an external wire, and the controller (308) is installed next to the water outlet assembly (3).

6. The automatic circulating heat exchange device for converting a non-pressurized vacuum tube solar water heater into a pressurized outlet water heater according to claim 5, characterized in that, The controller (308) transmits start and stop signals to the circulating water pump (2) via an RS485 communication cable.

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