Hot air-water heat exchange device

Abstract

A hot air-water heat exchange device comprises a heat preservation shell and at least one heat exchange structure arranged in the heat preservation shell. The heat exchange structure is provided with a water inlet, a water outlet and a plurality of heat exchange channels through which hot air passes; a water body enters from the water inlet for heat exchange and then flows out from the water outlet; the heat preservation shell is provided with an air inlet and an air outlet, and hot air enters the heat preservation shell from the air inlet, penetrates through the heat exchange structure and is exhausted from the air outlet. According to the utility model, the heat exchange structure is arranged, so that water is heated by hot air, and the heating efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of solar energy application, and in particular relates to a hot air-water heat exchange device. Background Art

[0002] With the concept of sustainable development becoming more popular and the rapid development of renewable energy technology, solar water heaters, as environmentally friendly equipment that uses solar radiation heat energy for heating, have been widely used around the world.

[0003] Most existing solar water heaters heat water directly through sunlight. While they can utilize solar radiation for heating, the efficiency of heat transfer is affected by various factors, such as water temperature, water flow rate, and the thermal resistance between the water and the collector. This results in significant heat loss during the heat transfer process. This is particularly true in poor weather or insufficient sunlight, significantly reducing the heating effect and making it difficult to meet user needs.

[0004] Long-term storage of water in the vacuum tube will cause scale to form. Due to the excessive thickness of the scale, the heat exchange performance of the vacuum tube will be affected, greatly reducing the heat transfer efficiency. In severe cases, the scale will crack and cause the tube to burst.

[0005] In terms of maintenance, since water heaters are usually installed outdoors, dust and dirt on the collector need to be cleaned regularly to keep it in good working condition, which increases the maintenance burden on users and may also cause equipment damage due to improper operation. Utility Model Content

[0006] The purpose of the utility model is to provide a hot air-water heat exchange to solve the problems of limited use environment and explosive pipes of solar water heaters, and at the same time solve the heat exchange problem of converting high-temperature hot air generated by solar energy into hot water and the technical problem of low heat exchange efficiency of hot air-water heat exchangers.

[0007] To achieve the above objectives, a specific technical solution of hot air-water heat exchange in the present invention is as follows:

[0008] A hot air-water heat exchange device comprises a heat-insulating shell and at least one heat exchange structure arranged in the heat-insulating shell;

[0009] The heat exchange structure is provided with a water inlet, a water outlet, and a plurality of heat exchange channels for hot air to pass through; water enters from the water inlet for heat exchange and flows out through the water outlet;

[0010] The heat-insulating shell is provided with an air inlet and an air outlet. Hot air enters the heat-insulating shell through the air inlet, passes through the heat exchange structure, and is discharged through the air outlet.

[0011] As a further improvement of the present invention, in order to increase the contact area and flow turbulence between the hot air and the water body, thereby improving the heat exchange efficiency, a turbulent flow structure is provided in the heat exchange channel to increase the flow turbulence of the hot air in the heat exchange channel and improve the heat exchange efficiency between the hot air and the water body.

[0012] As a further improvement of the present invention, the flow-disturbing structure includes a plurality of protrusions and / or grooves arranged on the inner surface of the heat exchange channel.

[0013] As a further improvement of the present invention, a heating water channel is formed in the heat exchange structure between the water inlet and the water outlet, and the heating water channel increases the flow of water in the heat exchange structure.

[0014] As a further improvement of the present invention, in order to make the hot air flow from bottom to top and improve the heat exchange efficiency between the hot air and the water body, the air inlet is located below the heat exchange structure and the air outlet is located above the heat exchange structure.

[0015] As a further improvement of the present invention, the heat exchange channels penetrate vertically and are distributed in an array on the surface of the heat exchange structure.

[0016] As a further improvement of the present invention, the air inlet is provided with a filtering structure to prevent impurities from entering.

[0017] As a further improvement of the present invention, a temperature sensor is provided in the heating water channel for real-time monitoring of the water temperature in the heating water channel.

[0018] As a further improvement of the present invention, in order to realize automatic water temperature regulation, the water inlet and the water outlet are provided with control valves to adjust the water flow according to the feedback information of the temperature sensor.

[0019] As a further improvement of the present invention, in order to better realize the flow of hot air in the heat-insulating shell and increase the heat exchange efficiency, the air inlet is connected to an air inlet device for adjusting the wind speed.

[0020] Beneficial effects:

[0021] This heat exchange device transfers heat from hot air to water, thereby transferring and utilizing thermal energy. The heat exchange structure allows the hot air to exchange heat with water within the insulated housing. Heat is transferred to the water via heat conduction, raising the water temperature. Due to convection, the hot air flows within the device, continuously transferring heat to the water, achieving continuous heat transfer.

[0022] By setting up the heat exchange channel, the contact area between hot air and water is greatly increased, and the heat exchange efficiency is greatly improved. The flow of water in the sealed heat exchange structure causes the water temperature to continue to rise, which greatly shortens the heating time and improves the hot water production efficiency.

[0023] The device of this utility model can effectively transfer heat from hot air to water, improving energy efficiency and reducing energy waste. By utilizing heat exchange technology, it can reduce thermal pollution to the environment, thus contributing to environmental protection. It also has the advantages of simple structure, easy operation, and simple maintenance, thus being widely applicable in various fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the appearance of a hot air-water heat exchange device of the present utility model;

[0025] Figure 2 This is a schematic structural diagram of a hot air-water heat exchange device of the present utility model;

[0026] Explanation of the markings in the figure: 1. Insulation shell; 2. Heat exchange structure; 3. Heat exchange channel; 4. Water inlet; 5. Water outlet; 6. Air inlet; 7. Air outlet. DETAILED DESCRIPTION

[0027] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0028] Implementation example:

[0029] like Figure 1 and 2 As shown, a hot air-water heat exchange device includes an insulating shell 1 and a heat exchange structure 2. The heat exchange structure 2 is removably placed within the insulating shell 1, dividing the interior space of the insulating shell 1 into upper and lower parts. The edge of the heat exchange structure abuts the inner wall of the insulating shell 1 to minimize the passage of hot air through the gap between the heat exchange structure 2 and the insulating shell 1. The insulating shell 1 is made of a high-thermal-resistance material and is designed with a certain height. This allows the hot air to circulate within the insulating shell 1, further extending the contact time between the hot air and the water, thereby improving heat exchange efficiency.

[0030] The heat exchange structure 2 is a sealed box body that matches the cross-sectional shape of the insulation shell 1. The water outlet and the water inlet 4 extend from the side through the insulation shell 1. A heat exchange channel 3 is provided on the surface of the heat exchange structure 2. In this embodiment, the heat exchange channel 3 is a through hole that passes through from top to bottom. The inner wall of the through hole is provided with protrusions and grooves as a turbulent flow structure to change the flow path of the hot air in the heat exchange channel 3, increase the contact area and flow turbulence between the hot air and the water body, thereby improving the heat exchange efficiency. The shape, size and distribution density of the protrusions or grooves can be optimized according to the flow characteristics of the hot air and the heat exchange requirements to achieve the best heat exchange effect.

[0031] Cold water enters the heat exchange channel within the heat exchange structure 2 through water inlet 4 and exits through water outlet 5 after heat exchange. The heat exchange channel extends in a curved shape along the heat exchange channel 3 within the heat exchange structure 2. As the cold water passes around the heat exchange channel 3, it exchanges heat with the hot air, absorbing heat and then heating up. Control valves are installed at the water inlet 4 and water outlet 5. The control valves are connected to the temperature sensor within the heat exchange channel and adjust the flow rate within the heat exchange channel according to the water temperature to ensure heat exchange efficiency.

[0032] Hot air enters the insulated housing 1 through air inlet 6, passes through the heat exchange channel, and is discharged through air outlet 7. Air inlet 6 is located below the heat exchange structure 2 and enters the insulated housing 1 from the side, allowing the hot air to flow from bottom to top, improving the heat exchange efficiency between the hot air and the water. A filter is installed inside air inlet 6 to prevent foreign particles from entering the insulated housing.

[0033] When multiple heat exchange structures 2 are placed in the insulation shell, the water outlets 5 and water inlets 4 of adjacent heat exchange structures 2 can be connected in series, which can better improve the heat exchange efficiency, speed up the hot water production speed, and meet the large-scale hot water use needs.

[0034] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A hot air-water heat exchange device, characterized in that: It comprises a heat-insulating shell, and at least one heat exchange structure arranged in the heat-insulating shell; The heat exchange structure is provided with a water inlet, a water outlet, and a plurality of heat exchange channels through which hot air passes; water enters from the water inlet for heat exchange and flows out from the water outlet; The heat-insulating shell is provided with an air inlet and an air outlet. Hot air enters the heat-insulating shell through the air inlet, passes through the heat exchange structure, and is discharged through the air outlet.

2. The hot air-water heat exchange device according to claim 1, characterized in that: The heat exchange channel is provided with a turbulent flow structure to increase the flow turbulence of the hot air in the heat exchange channel and improve the heat exchange efficiency between the hot air and the water body.

3. The hot air-water heat exchange device according to claim 2, characterized in that: The spoiler structure includes a plurality of protrusions and / or grooves arranged on the inner surface of the heat exchange channel.

4. The hot air-water heat exchange device according to claim 1, characterized in that: A heating water channel is formed in the heat exchange structure between the water inlet and the water outlet, and the heating water channel increases the flow of water in the heat exchange structure.

5. The hot air-water heat exchange device according to claim 1, characterized in that: The air inlet is located below the heat exchange structure, and the air outlet is located above the heat exchange structure.

6. The hot air-water heat exchange device according to claim 5, characterized in that: The heat exchange channels penetrate vertically and are distributed in an array on the surface of the heat exchange structure.

7. The hot air-water heat exchange device according to claim 1, characterized in that: The air inlet is provided with a filtering structure to prevent impurities from entering.

8. The hot air-water heat exchange device according to claim 4, characterized in that: A temperature sensor is arranged in the heating water channel for real-time monitoring of the water temperature in the heating water channel.

9. The hot air-water heat exchange device according to claim 8, characterized in that: The water inlet and the water outlet are provided with control valves to adjust the water flow according to the feedback information of the temperature sensor.

10. The hot air-water heat exchange device according to claim 1, characterized in that: The air inlet is connected to an air inlet device for adjusting the wind speed.

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