Air-water heat exchange device
By designing a gas-water heat exchange device, the use of inclined materials to absorb solar energy and force ventilation to transfer heat, the problem of temperature drop in the greenhouse at night is solved, efficient energy storage and utilization is achieved, and energy consumption is reduced.
Patent Information
- Application Number
- CN202422442383.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The existing greenhouse equipment fails to effectively utilize the energy illuminated by sunlight, causing the temperature to drop too quickly at night, requiring additional energy to supplement, and the existing heat exchangers do not consider the impact of sunlight illumination on heat exchange.
A gas-water heat exchange device is designed, including an inclined shell, an internal heat exchanger, a circulating water pipe, a fan and an energy storage device. It uses a beveled material to absorb sunlight, force exhaust through the fan, and the hot air is transferred to the heat exchanger medium, and the medium is stored in the underground heat exchange tube through a circulating pump, the soil is heated during the day and the heat is kept at night.
It improves the heat exchange efficiency in the greenhouse, reduces energy consumption, reduces the risk of greenhouse frost damage, and delays the temperature drop through soil energy storage.
Smart Images
Figure CN223274590U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of indoor planting, in particular to an air-water heat exchange device. Background Art
[0002] Solar greenhouses are important facilities for vegetable production in northern China, and in recent years, the research and application of energy-saving environmental control technologies has received increasing attention. During the day, sunlight inside the greenhouse can reach a temperature suitable for crop growth, even requiring ventilation if the temperature is too high. However, at night, the temperature drops too quickly, requiring additional energy to meet plant growth needs. If excess daytime energy could be collected and used to heat the greenhouse at night, energy consumption would be greatly reduced. Existing equipment primarily absorbs heat from the air through heat exchangers, without considering the effects of sunlight on heat transfer. Therefore, there is an urgent need for a greenhouse heat collection device that can fully utilize sunlight to heat and insulate the greenhouse when temperatures drop at night. Utility Model Content
[0003] The purpose of the utility model is to provide an air-water heat exchange device, which can fully collect the heat in the greenhouse and store it underground, utilizing the characteristic of the land to delay heat release, thereby increasing the temperature of the greenhouse at night and reducing frost damage in the solar greenhouse.
[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:
[0005] An air-water heat exchange device includes a shell with a side surface set as an inclined surface, a heat exchanger arranged inside the shell, a circulating water pipe connected to the heat exchanger, and a fan arranged on a side panel of the shell. The circulating water pipe is connected to an energy storage device.
[0006] A further improvement of the technical solution of the present utility model is that the energy storage device includes a water inlet pipeline, a return pipeline, a circulating pump arranged on the water inlet pipeline or the return pipeline, and an underground heat exchange pipe. The upper ends of the water inlet pipeline and the return pipeline are respectively connected to the circulating water pipe of the air-water heat exchange device, and the lower ends are connected to the head and tail ends of the underground heat exchange pipe.
[0007] A further improvement of the technical solution of the present utility model is that valves are provided on the water inlet pipe and the water return pipe.
[0008] A further improvement of the technical solution of the present invention is that the inclined side panels of the housing include a light-transmitting panel and a light-impermeable panel, the light-transmitting panel includes a plastic panel and a glass panel, and the light-impermeable panel includes a metal panel coated with a black heat-absorbing coating.
[0009] A further improvement of the technical solution of the present utility model is that the heat exchanger is a gas-liquid heat exchanger, including a fin-type gas-liquid heat exchanger.
[0010] A further improvement of the technical solution of the present utility model is that the air-water heat exchange device is installed in the upper part of the greenhouse, which includes a north wall, a south wall provided with a light-transmitting film as a lighting surface, and east and west gables, and the inclined surface of the air-water heat exchange device faces the south wall of the greenhouse.
[0011] A further improvement of the technical solution of the present invention is that a side plate on the housing opposite to the fan is a grille-type side plate, and the heat exchanger is arranged between the fan and the grille-type side plate.
[0012] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:
[0013] The air-water heat exchange device of the present application fully utilizes the waste heat recovery in the solar greenhouse. The lighting surface is designed as an inclined surface, which improves the heat exchange efficiency, enhances the utilization of solar energy, warms the soil, and reduces energy consumption.
[0014] The air-water heat exchange device of the present application increases the temperature difference between the water in the heat exchange water tank and the surrounding air by selecting the material of its lighting surface - the inclined side panel to be a material with stronger light absorption and coating the surface with a black heat-absorbing coating, thereby enhancing the heat exchange efficiency.
[0015] Another solution is to select a translucent material for the lighting surface. When the heat exchanger is directly exposed to sunlight, the temperature of its metal surface rises, directly heating the medium in the heat exchanger, thereby increasing the temperature of the medium and improving the utilization efficiency of solar radiation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the utility model gas-water heat exchange device;
[0017] Figure 2 This is a schematic diagram of the interior of the gas-water heat exchange device of the utility model;
[0018] Figure 3 yes Figure 2 sectional view of
[0019] Figure 4 This is a schematic diagram of the utility model air-water heat exchange device installed in a greenhouse;
[0020] Among them, 1. Shell, 2. Heat exchanger, 3. Fan, 4. Heat exchanger water inlet pipe, 5. Heat exchanger water outlet pipe, 6. Return pipe, 7. Water inlet pipe, 8. Valve, 9. Circulation pump. DETAILED DESCRIPTION
[0021] The present invention is further described in detail below with reference to the embodiments:
[0022] like Figure 1As shown, an air-water heat exchange device includes a shell 1 with a side surface set as an inclined surface, a heat exchanger 2 arranged inside the shell 1, a circulating water pipe connected to the heat exchanger 2, and a fan 3 arranged on a side panel of the shell 1, and the circulating water pipe is connected to the energy storage device.
[0023] like Figure 2 、 3 As shown in Figures 4 and 5, the energy storage device includes an inlet pipe 7, a return pipe 6, a circulating pump 9 installed on the inlet pipe 7 or the return pipe 6, and an underground heat exchange pipe 5. The circulating water pipe includes a heat exchanger inlet pipe 4 and a heat exchanger outlet pipe 5. The upper ends of the return pipe 6 and the inlet pipe 7 are connected to the heat exchanger inlet pipe 4 and the heat exchanger outlet pipe 5 of the circulating water pipe, respectively. The lower ends of the return pipe 6 and the inlet pipe 7 are connected to the end of the underground heat exchange pipe 5. Valves 8 are installed on the inlet pipe 7 and the return pipe 6.
[0024] The inclined side panels of the housing 1 include light-transmitting panels and opaque panels. The light-transmitting panels include plastic panels and glass panels, and the opaque panels include metal panels coated with a black heat-absorbing coating. The heat exchanger 2 is a gas-liquid heat exchanger, including a finned gas-liquid heat exchanger.
[0025] The air-water heat exchange device is installed in the upper part of the greenhouse. The greenhouse includes a north wall, a south wall with a light-transmitting film as a lighting surface, and east and west gables. The inclined surface of the air-water heat exchange device faces the south wall of the greenhouse.
[0026] A side plate on the housing 1 opposite to the fan 3 is a grille-type side plate, and the heat exchanger 2 is arranged between the fan 3 and the grille-type side plate.
[0027] The device of the present application is placed in the upper part of the greenhouse. The temperature in the greenhouse rises during the day due to sunlight, which can reach the temperature for crop growth. The fan 3 in the device forces air to be drawn, and the hot air passes through the heat exchanger 2. Due to the temperature difference between the medium and the air in the heat exchanger, the heat in the hot air is gradually transferred to the medium of the heat exchanger 2.
[0028] This device primarily utilizes an inclined light-collecting surface to absorb more sunlight, thereby improving heat exchange efficiency. The inclined surface can be constructed using either opaque or translucent materials. When the inclined surface is opaque, the opaque plate can be a metal plate coated with a black heat-absorbing coating. The surface absorbs solar radiation, raising its temperature. This heat is then transferred into the chamber of the housing 1, raising the temperature at the air inlet of the heat exchanger 2. This increases the temperature difference between the medium and the air inside the heat exchanger 2, thereby improving heat exchange efficiency. When the inclined surface is translucent, the translucent plate can be a plastic or glass plate. Direct sunlight can illuminate the heat exchanger 2, raising the metal surface temperature and directly heating the medium inside the heat exchanger, thereby increasing the medium's temperature. The medium inside the heat exchanger can be water or another solution. A circulating pump 9 connects the heat exchange medium to the underground heat exchange pipe 5 of the energy storage device. Heat exchange is enhanced by the inclined surface and fan 3. The circulating pump 9 pumps water from the heat exchanger 2 into the underground heat exchange pipe 5, warming the soil during the day and the air at night, thereby increasing the soil temperature.
Claims
1. An air-water heat exchange device, characterized in that: The invention comprises a shell (1) with a side surface arranged as an inclined surface, a heat exchanger (2) arranged inside the shell (1), a circulating water pipe connected to the heat exchanger (2), and a fan (3) arranged on a side panel of the shell (1), wherein the circulating water pipe is connected to the energy storage device.
2. The air-water heat exchange device according to claim 1, characterized in that: The energy storage device comprises a water inlet pipeline (7), a water return pipeline (6), a circulating pump (9) arranged on the water inlet pipeline (7) or the water return pipeline (6), and an underground heat exchange pipe (5); the upper ends of the water inlet pipeline (7) and the water return pipeline (6) are respectively connected to the circulating water pipe of the air-water heat exchange device, and the lower ends are connected to the head and tail ends of the underground heat exchange pipe (5).
3. The air-water heat exchange device according to claim 2, characterized in that: Valves (8) are provided on the water inlet pipeline (7) and the water return pipeline (6).
4. The air-water heat exchange device according to claim 1, characterized in that: The inclined side panels of the housing (1) include a light-transmitting panel and a light-impermeable panel, the light-transmitting panel includes a plastic panel and a glass panel, and the light-impermeable panel includes a metal panel coated with a black heat-absorbing coating.
5. The air-water heat exchange device according to claim 1, characterized in that: The heat exchanger (2) is a gas-liquid heat exchanger, including a fin-type gas-liquid heat exchanger.
6. The air-water heat exchange device according to claim 4, characterized in that: The air-water heat exchange device is installed in the upper part of the greenhouse. The greenhouse includes a north wall, a south wall with a light-transmitting film as a lighting surface, and east and west gables. The inclined surface of the air-water heat exchange device faces the south wall of the greenhouse.
7. The air-water heat exchange device according to claim 4, characterized in that: A side plate on the housing (1) opposite to the fan (3) is a grille-type side plate, and the heat exchanger (2) is arranged between the fan (3) and the grille-type side plate.