Heat preservation device of solar water heater

Abstract

The utility model discloses a heat preservation device of a solar water heater, which comprises a horizontally arranged first pipeline, a first end of the first pipeline is used for being connected with an exhaust port on a water tank of the solar water heater, a pipe orifice of a second end of the first pipeline is arranged downwards, and the second end of the first pipeline is connected with a hot air inlet of a heat storage cavity. And an air outlet is formed in the heat storage cavity. By arranging the horizontal first pipeline and the heat storage cavity, hot air is located above, cold air is located below, exchange of the cold air and the hot air is avoided, then when air pressure gradually rises, the hot air enters the heat storage cavity, the heat storage cavity has a certain volume, the hot air can be temporarily stored, hot air loss is delayed, and the hot air is prevented from being directly discharged from the air outlet; therefore, the heat preservation effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of solar water heaters, specifically a heat preservation device for solar water heaters. Background Technology

[0002] In daily life, solar water heaters are equipped with vents on their tanks, which open directly to the atmosphere. When water is added to the solar water heater, the pressure inside the tank is released through the vent, protecting the inner tank from bursting. When using the water heater, hot air is directly discharged from the tank through the vent. In summer, when the outside temperature is high, the heat loss from the tank is slower. However, in spring, autumn, and winter, during periods of weak sunlight, continuous cloudy or rainy weather, snowy days, or at night, the direct discharge of hot air can easily lead to low water temperature and rapid heat loss, affecting usability.

[0003] To improve the heat insulation of the exhaust port of a solar water heater, Chinese utility model patent CN214949888U discloses a solar water heater tank, including an adjustable exhaust structure. The adjustable exhaust structure includes an exhaust pipe and a converter. The exhaust pipe is connected to the top of the tank body, with a closed top and an exhaust hole on its side wall. The converter has a horizontally arranged first branch pipe and a second branch pipe, all at the same height. The diameter of the first branch pipe is larger than that of the second branch pipe. By rotating the converter, the first and second branch pipes can connect to the exhaust hole, and the diameter of the exhaust hole is greater than or equal to the diameter of the first branch pipe. In summer, the first branch pipe can be connected to the exhaust hole for good exhaust performance; in spring, autumn, and especially winter, the second branch pipe can be connected to the exhaust hole for good heat insulation. This solution achieves heat insulation by adjusting the exhaust speed by switching the diameter of the exhaust branch pipe, but the structure is relatively complex and the cost is high. Therefore, the insulation device at the exhaust port of solar water heater needs to be further improved in the direction of simple structure and cost saving, so as to meet the needs of low cost and easy use in household applications. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, achieve effective heat preservation at the exhaust port of the solar water heater, reduce heat loss, simplify the structure, save costs, and provide a heat preservation device for solar water heaters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heat preservation device for a solar water heater includes a horizontally arranged first pipe, a first end of which is connected to an exhaust port on the water tank of the solar water heater, a second end of which is arranged with its opening facing downwards, and the second end of which is connected to a hot air inlet of a heat storage chamber, wherein an air outlet is provided on the heat storage chamber.

[0007] This invention, by setting up a first pipe and a heat storage chamber, allows hot air from the water tank to first accumulate in the upper first pipe after exiting the exhaust port during the colder spring, autumn, and winter months. Because the heat is generated slowly, the air pressure in the first pipe is approximately equal to or slightly greater than atmospheric pressure. At this time, the cold air is below, and there is no exchange between the hot and cold air, which can act as a shield against the cold air. As the air pressure gradually increases, the hot air enters the heat storage chamber. The heat storage chamber has a certain volume, which can temporarily store the hot air, delay the loss of hot air, and prevent the hot air from being directly discharged from the exhaust port, thereby achieving a heat preservation effect.

[0008] For ease of processing, the longitudinal section of the heat storage cavity is set to one of the following: circular, quadrilateral, pentagonal, or hexagonal.

[0009] To improve the heat preservation effect, multiple heat storage chambers are provided, which are connected in sequence, and the air outlet is located on the bottom heat storage chamber.

[0010] To improve thermal insulation performance, an insulation layer is provided on the first pipe and / or the heat storage cavity, and the insulation layer is made of insulation board or insulation coating.

[0011] This invention enables normal exhaust in hot summer weather and slows down heat loss in cold winter weather, achieving effective heat preservation at the exhaust port of the solar water heater and reducing heat loss, while simplifying the structure and saving costs. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings:

[0013] Figure 1 This is a structural schematic diagram of Example 1;

[0014] Figure 2 This is a structural schematic diagram of Example 2;

[0015] Figure 3 This is a schematic diagram of the structure of Example 3.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1-Water tank; 2-Exhaust port; 3-First pipe; 4-Second end of the first pipe; 5-Heat storage chamber; 501-First heat storage chamber; 502-Second heat storage chamber; 503-Third heat storage chamber; 6-Air outlet. Detailed Implementation

[0018] Example 1

[0019] like Figure 1 As shown, this utility model provides a heat preservation device for a solar water heater, including a horizontally arranged first pipe 3. The first end of the first pipe 3 is connected to an exhaust port 2 on the water tank 1 of the solar water heater, and the second end 4 of the first pipe has its opening facing downwards. The second end 4 of the first pipe is connected to the hot air inlet of a heat storage chamber 5, which has an exhaust port 6. The longitudinal section of the heat storage chamber 5 can be circular, quadrilateral, pentagonal, or hexagonal. In this embodiment, the longitudinal section of the heat storage chamber 5 is quadrilateral. To further improve the heat preservation performance, both the first pipe 3 and the heat storage chamber 5 are provided with a heat preservation layer. The heat preservation layer is formed by wrapping the first pipe 3 and the heat storage chamber 5 with an insulation board, or by applying an insulation coating to the first pipe 3 and the heat storage chamber 5.

[0020] In this embodiment, during the colder spring, autumn, and winter months, the hot air from the water tank 1 exits through the exhaust port 2 and first accumulates in the upper first pipe 3. Because the heat generation is slow, the air pressure in the first pipe 3 is approximately equal to or slightly greater than atmospheric pressure. At this time, the cold air is below, and there is no exchange between the hot and cold air, effectively shielding the water tank from the cold air. Subsequently, as the air pressure gradually increases, the hot air enters the heat storage chamber 5. The heat storage chamber 5 has a certain volume, which can temporarily store the hot air, delaying its dissipation and preventing it from being directly discharged from the exhaust port 6, thus achieving a heat preservation effect. During the hotter summer months, the heat generation is rapid, and the heat preservation device normally exhausts air through the exhaust port 6, depressurizing the water tank.

[0021] In this embodiment, the diameter of the heat storage cavity 5 can be appropriately enlarged to increase the heat storage volume.

[0022] This invention enables normal venting in hot summer weather and slows heat loss in cold winter weather, achieving effective heat preservation at the vent of the solar water heater and reducing heat loss, while simplifying the structure and saving costs. Furthermore, this invention has a simple structure, facilitating manufacturing and widespread use.

[0023] Example 2

[0024] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the longitudinal section of the heat storage cavity 5 is set as a pentagon. By setting the heat storage cavity 5 as a pentagon, a gradual transition structure is formed with the second end 4 of the first pipe, which facilitates the entry of hot air into the heat storage cavity 5 and improves the heat preservation efficiency.

[0025] Example 3

[0026] like Figure 3As shown, this embodiment differs from Embodiment 1 in that multiple heat storage chambers 5 can be provided. In this embodiment, three are provided, namely, a first heat storage chamber 501, a second heat storage chamber 502, and a third heat storage chamber 503 connected sequentially from top to bottom. The air outlet 6 is located on the bottom of the third heat storage chamber 503. By providing multiple heat storage chambers, the time for heat to dissipate from the air outlet 6 can be further shortened, thereby improving the heat preservation capacity.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope defined in the claims.

Claims

1. A thermal insulation device for a solar water heater, characterized in that, The first pipe is horizontally arranged, a first end of the first pipe is connected with an exhaust port on a water tank of a solar water heater, a second end of the first pipe is downwardly arranged, a pipe opening of the second end of the first pipe is connected with a hot gas inlet of a heat storage cavity, and an exhaust port is arranged on the heat storage cavity.

2. The thermal insulation device for a solar water heater according to claim 1, characterized in that, The longitudinal section of the heat storage cavity is circular, quadrilateral, pentagonal or hexagonal.

3. The thermal insulation device for a solar water heater according to claim 1, wherein A plurality of heat storage cavities are arranged, and the heat storage cavities are sequentially connected, and the exhaust port is arranged on the heat storage cavity at the bottom.

4. The thermal insulation device for a solar water heater according to claim 1, wherein An insulation layer is arranged on the first pipe and / or the heat storage cavity, and the insulation layer is made of an insulation board or insulation paint.

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