Hot water tank for solar water heater capable of reducing freezing of water tank in winter

Abstract

The utility model relates to the field of solar water heaters, in particular to a hot water tank for a solar water heater, which can reduce freezing of the water tank in winter. The inner container and the outer container are both sealed cavities, the outer container is arranged in the shell, the inner container is arranged in the outer container, an air outlet pipe and an air inlet pipe are arranged on the side wall of the inner container, the air outlet pipe and the air inlet pipe extend out of the shell, a water outlet pipe and a water inlet pipe are arranged on the side wall of the outer container, and the water outlet pipe and the water inlet pipe are communicated with each other. The water outlet pipe and the water inlet pipe extend out of the shell, and a gas channel is formed between the inner container and the outer container. According to the hot water tank, air is used as a heat transfer medium to replace traditional water as the heat transfer medium, no water pipeline is arranged between the inner container and the solar drying panel, freezing of a heat exchange channel is effectively avoided, and freezing blockage is reduced. Meanwhile, the gas channel is arranged outside the inner container, and the heat preservation layer is arranged between the outer container and the shell so that the heat insulation effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of solar water heaters, in particular to a hot water tank for solar water heaters which can reduce the freezing of the water tank in winter. Background Art

[0002] The existing solar wall-mounted water heaters with solar vacuum tubes as the heating body mainly use water as the heat transfer medium for heating. This method has the following disadvantages: In the winter when the temperature is low, the water circulation pipes connected to the sun drying board will freeze, blocking the water circulation and affecting the use of the solar water heater. In the case of sufficient sunlight, the temperature inside the vacuum tube on the sun drying board can reach up to 260 degrees, but the frozen water circulation pipes are not melted and cleared in time, which results in no hot water at the water outlet, which is inconvenient to use. Summary of the invention

[0003] The utility model provides a hot water tank for a solar water heater which can reduce the freezing of the water tank in winter, and can effectively reduce the phenomenon of hot water freezing.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A hot water tank for a solar water heater capable of reducing the freezing of the water tank in winter comprises a cylindrical shell, an inner tank and an outer tank, both of which are sealed cavities, the outer tank is arranged in the shell, the inner tank is arranged in the outer tank, an air outlet pipe and an air inlet pipe are arranged on the side wall of the inner tank, the air outlet pipe and the air inlet pipe extend to the outside of the shell, a water outlet pipe and a water inlet pipe are arranged on the side wall of the outer tank, the water outlet pipe and the water inlet pipe extend to the outside of the shell, and a gas channel is formed between the inner tank and the outer tank.

[0006] The hot water tank for a solar water heater that can reduce the freezing of the water tank in winter, the gas channel includes a partition, the partition is a spiral plate, the partition is wrapped around the inner tank, the two sides of the partition are respectively connected to the outer wall of the inner tank and the inner wall of the outer tank, the partition divides the space between the inner tank and the outer tank into a spiral gas channel, and the water outlet pipe and the water inlet pipe are respectively connected to the two ends of the gas channel.

[0007] The hot water tank for solar water heaters that can reduce the freezing of water tanks in winter is also provided with an electric heating mechanism, which includes an electric heating rod, a temperature sensor and a digital display screen. The heating end of the electric heating rod extends into the inner tank, and the power cord of the electric heating rod extends outside the shell. A sealing insulation material is provided between the electric heating rod and the inner tank, and an insulating insulation layer is provided outside the power cord; the sensing end of the temperature sensor is provided in the inner tank, the digital display screen is connected to the temperature sensor, the temperature sensor is provided on the upper part of the water tank, and the digital display screen displays the water temperature in the inner tank.

[0008] The hot water tank for a solar water heater capable of reducing the freezing of the water tank in winter, the overflow valve is connected to the inner tank through the overflow pipe, and the overflow valve is arranged at the top of the shell.

[0009] The hot water tank for solar water heaters which can reduce the freezing of the water tank in winter is also provided with a mounting seat or a hanging ear, wherein the mounting seat is arranged at the bottom of the shell, and the hanging ear is arranged on the side wall of the shell.

[0010] Compared with the prior art, the utility model uses air as the heat transfer medium instead of the traditional water as the heat transfer medium. There is no water pipeline between the inner tank and the solar panel, which effectively avoids the freezing of the heat exchange channel and reduces the occurrence of freezing blockage. The outer tank is provided with an insulation layer, which plays a role in heat insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model in the forward direction;

[0012] Figure 2 It is a lateral structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the internal structure of the utility model in the positive direction;

[0014] Figure 4 It is a lateral schematic diagram of the internal structure of the utility model;

[0015] Figure 5 It is a schematic diagram of a partition of the utility model;

[0016] Figure 6 This is a schematic diagram of the installation of the electric heating device of the utility model;

[0017] Figure 7 It is a transverse cross-sectional view of the inner bag and the outer liner of the utility model;

[0018] The symbols in the accompanying drawings indicate: 1. shell, 2. inner liner, 3. outer liner, 4. air outlet pipe, 5. air inlet pipe, 6. water outlet pipe, 7. water inlet pipe, 8. partition, 9. electric heating rod, 10. temperature sensor, 11. digital display screen, 12. overflow pipe, 13. overflow valve, 14. insulation layer, 15. mounting seat, 16. hanging ear. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the utility model.

[0020] like Figures 1 to 7As shown, the utility model comprises a cylindrical shell 1, an inner liner 2 and an outer liner 3, both of which are sealed cavities, the outer liner 3 is arranged in the shell 1, the inner liner 2 is arranged in the outer liner 3, a water outlet pipe 6 and a water inlet pipe 7 are arranged on the side wall of the inner liner 2, the water outlet pipe 6 and the water inlet pipe 7 extend to the outside of the shell 1, an air outlet pipe 4 and an air inlet pipe 5 are arranged on the side wall of the outer liner 3, the air outlet pipe 4 and the air inlet pipe 5 extend to the outside of the shell 1, and a gas channel is provided between the inner liner 2 and the outer liner 3. When in use, the air outlet pipe and the air inlet pipe are connected to the vacuum tube of the solar panel to form a gas loop, the water outlet pipe is connected to the external water source, the water inlet pipe is connected to the water-using equipment, and then the hot air of the vacuum tube of the solar panel absorbs heat and is blown into the gas channel through the fan, and after the hot air exchanges heat with the water in the inner liner 2 in the gas channel, the low-temperature air flows back to the vacuum tube to continue heat exchange. In order to keep warm, a heat-insulating layer 14 is provided, and the heat-insulating layer 14 is provided between the outer liner 3 and the shell 1 .

[0021] In order to improve the heat exchange efficiency and extend the heat exchange path, the gas channel includes a partition 8, which is a spiral plate, and the partition 8 is wound on the inner liner 2. The two sides of the partition 8 are respectively connected to the outer wall of the inner liner 2 and the inner wall of the outer liner 3. The partition 8 separates the space between the inner liner 2 and the outer liner 3 into a spiral gas channel, and the air outlet pipe and the air inlet pipe are respectively connected to the two ends of the gas channel. Hot air passes through the gas channel and exchanges heat with the inner liner 2.

[0022] In order to be able to use hot water even on long rainy or snowy days, an electric heating mechanism is also provided, which includes an electric heating rod 9, a temperature sensor 10 and a digital display screen 11. The heating end of the electric heating rod 9 extends into the inner tank 2, and the power cord of the electric heating rod 9 extends to the outside of the shell 1. A sealing insulation material is provided between the heating rod and the inner tank 2, and an insulating insulation layer is provided outside the power cord. The sensing end of the temperature sensor 10 is provided on the upper part of the inner tank 2, and the digital display screen 11 is connected to the temperature sensor 10, and displays the water temperature in the inner tank 2, which is heated by the electric heating rod 9.

[0023] For ease of use and safety, an overflow pipe 12 and an overflow layer are provided. The overflow valve 13 is connected to the inner tank 2 through the overflow pipe 12. The overflow valve 13 is provided at the top of the shell 1 so as to relieve the water pressure in the water tank when it is too high.

[0024] A mounting seat 15 or a hanging ear 16 is also provided, wherein the mounting seat 15 is provided at the bottom of the housing 1, and the hanging ear 16 is provided at the side wall of the housing 1. The hanging ear 16 can hang the device on the wall, and the mounting seat 15 can facilitate the device to be placed on the ground, making the installation of the solar water heater more convenient.

[0025] Preferably, the outer liner 3 is configured to be cylindrical, and a seal is provided at the end of the outer liner 3 and the inner liner 2, through which a gas passage is formed between the inner liner 2 and the outer liner 3, which can facilitate the installation of the electric heating mechanism. The inner liner 2 can also be equipped with a water valve to directly take water from or drain the inner liner 2.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hot water tank for a solar water heater that can reduce the freezing of the water tank in winter, characterized in that: The invention comprises a cylindrical shell (1), an inner liner (2) and an outer liner (3), wherein the inner liner (2) and the outer liner (3) are both sealed cavities, the outer liner (3) is arranged in the shell (1), and the inner liner (2) is arranged in the outer liner (3), a water outlet pipe (6) and a water inlet pipe (7) are arranged on the side wall of the inner liner (2), and the water outlet pipe (6) and the water inlet pipe (7) extend to the outside of the shell (1), an air outlet pipe (4) and an air inlet pipe (5) are arranged on the side wall of the outer liner (3), and the air outlet pipe (4) and the air inlet pipe (5) extend to the outside of the shell (1), and a gas passage is formed between the inner liner (2) and the outer liner (3).

2. The hot water tank for solar water heaters capable of reducing freezing of the water tank in winter as claimed in claim 1, characterized in that: The gas passage comprises a partition (8), the partition (8) being a spiral plate, the partition (8) being wound around the inner liner (2), the two sides of the partition (8) being respectively connected to the outer side wall of the inner liner (2) and the inner side wall of the outer liner (3), the partition (8) dividing the space between the inner liner (2) and the outer liner (3) into a spiral gas passage, the gas outlet pipe (4) and the gas inlet pipe (5) respectively connecting the two ends of the gas passage.

3. The hot water tank for solar water heaters capable of reducing freezing of the water tank in winter as claimed in claim 2, characterized in that: An electric heating mechanism is also provided, the heating mechanism comprising an electric heating rod (9), a temperature sensor (10) and a digital display screen (11); the heating end of the electric heating rod (9) extends into the inner pot (2); the power line of the electric heating rod (9) extends outside the housing (1); a sealing heat-insulating material is provided between the heating rod and the inner pot (2); an insulating heat-insulating layer is provided outside the power line; the sensing end of the temperature sensor (10) is provided in the inner pot (2); the digital display screen (11) is connected to the temperature sensor (10), and the digital display screen (11) displays the water temperature in the inner pot (2).

4. The hot water tank for solar water heaters capable of reducing freezing of the water tank in winter as claimed in claim 3, characterized in that: An overflow pipe (12), an overflow valve (13) and a heat-insulating layer (14) are also provided. The heat-insulating layer (14) is provided between the outer liner (3) and the shell (1). The overflow valve (13) is connected to the inner liner (2) through the overflow pipe (12). The overflow valve (13) is provided at the top of the shell (1).

5. The hot water tank for solar water heaters capable of reducing freezing of the water tank in winter as claimed in claim 4, characterized in that: A mounting seat (15) or a hanging ear (16) is also provided, wherein the mounting seat (15) is provided at the bottom of the shell (1), and the hanging ear (16) is provided on the side wall of the shell (1).

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