Solar heat collector

Abstract

The utility model provides a solar heat collector which is characterized by comprising a heat collector body and a heat collection assembly. The heat collector comprises a box body and a heat absorption plate core, a transparent cover plate is arranged on the front side of the box body, and the heat absorption plate core is at least partially located in the box body and partially arranged in the heat collection assembly; sunlight penetrates through the transparent cover plate and irradiates on the heat absorption plate core, and the heat absorption plate core absorbs heat and transmits the heat to water in the heat collection assembly so as to heat the water in the heat collection assembly. The solar heat collector is easy to install, not prone to corrosion and water leakage and long in service life.

Description

Technical Field

[0001] The present application relates to the technical field of solar thermal collectors, and in particular to a solar thermal collector. Background Art

[0002] Solar collectors are heating devices that convert solar energy into thermal energy, heating water from low temperature to high temperature to meet people's needs for hot water in life and production.

[0003] In the related art, a solar thermal collector usually includes a water tank and a heat collecting plate, which are connected together by welding. However, since the water tank is usually made of steel and the heat collecting plate is usually made of aluminum, there is a metal potential difference. After adding water to the water tank, the weld is prone to corrosion and leakage, which seriously affects the service life of the device.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The present application is proposed in view of the above-mentioned problems. According to one aspect of the present application, a solar collector is provided, characterized in that it includes: a collector and a heat collecting assembly; the collector includes a box body and a heat absorbing plate core, a transparent cover plate is provided on the front side of the box body, the heat absorbing plate core is at least partially located in the box body and the heat absorbing plate core is partially provided in the heat collecting assembly; sunlight passes through the transparent cover plate and irradiates the heat absorbing plate core, the heat absorbing plate core absorbs heat and transfers the heat to the water in the heat collecting assembly to heat the water in the heat collecting assembly.

[0006] Exemplarily, the heat collection assembly includes a heat collection tank, a heat absorption plate core is arranged in the tank, and the top of the heat absorption plate core passes through the tank and is arranged inside the heat collection tank.

[0007] Exemplarily, a first flexible transition sleeve for sealing a gap between the wall of the heat collecting tank and the heat absorbing plate core is provided at the connection between the heat collecting tank and the heat collecting tank.

[0008] Exemplarily, the heat collection assembly includes a heat collection water pipe, the water outlet end of which is connected to a heat storage tank; the heat absorption plate core is at least partially located in the tank body and the heat absorption plate core is partially arranged in the heat collection water pipe to heat the water in the heat collection water pipe. After the water in the heat collection water pipe is heated by the heat absorption plate core, it flows into the heat storage tank.

[0009] Exemplarily, there are multiple collectors, and the multiple collectors are distributed in sequence along the water flow direction in the heat collecting water pipe.

[0010] Exemplarily, the water collecting pipe is arranged outside the box, the heat absorbing plate core is arranged inside the box, and the top of the heat absorbing plate core passes through the box and is arranged inside the water collecting pipe. A second flexible transition sleeve is provided at the connection between the heat absorbing plate core and the water collecting pipe for sealing the gap between the wall of the water collecting pipe and the heat absorbing plate core.

[0011] Exemplarily, the heat collecting water pipe passes through the box body, the heat absorbing plate core is arranged in the box body, and the top of the heat absorbing plate core is arranged in the heat collecting section of the heat collecting water pipe, and the heat collecting section is the water pipe section of the heat collecting water pipe located in the box body; a third flexible transition sleeve is provided at the connection between the heat absorbing plate core and the heat collecting section for sealing the gap between the heat collecting section pipe wall and the heat absorbing plate core.

[0012] Exemplarily, a heat-insulating layer is provided in the box body, and the heat-insulating layer is located on a side of the heat-absorbing plate core away from the transparent cover plate.

[0013] Exemplarily, the heat absorbing plate core is composed of a heat pipe, and a plurality of protrusions are arranged on the inner wall of the heat pipe, and the arc cutting angle of the protrusions is greater than the medium wetting angle of the medium in the heat pipe.

[0014] Exemplarily, the heat absorbing plate core is composed of microporous flat heat pipes, and the surface of the microporous flat heat pipes is coated with heat absorbing coating.

[0015] Compared with the prior art, in the above technical solution, the heat absorbing plate core is directly embedded in the heat collecting assembly, thereby directly exchanging heat with the water in the heat collecting assembly, thereby heating the water in the heat collecting assembly. This embedded setting method does not require welding and fixing, is simple and convenient to install, and avoids the technical problem of corrosion and leakage at the weld. In short, the solar collector of this solution is easy to install, not easy to corrode and leak, and has a long service life.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the solar radiator of Example 1 of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the solar radiator as seen from the side;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat pipe in Example 1 of the present application;

[0021] Figure 4This is a schematic diagram of the structure of the heat collection assembly and the heat collector of Example 2 of the present application;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure shown in a side view;

[0023] Figure 6 This is a schematic diagram of the overall structure of the solar radiator of Example 2 of the present application;

[0024] Figure 7 This is a schematic diagram of the structure of the heat collection assembly and the heat collector of Example 3 of the present application;

[0025] Figure 8 for Figure 7 A schematic diagram of the structure shown in a side view;

[0026] In the figure: 1, box body; 2, heat absorbing plate core; 3, heat collecting water tank; 4, insulation layer; 5, transparent cover; 7, cold water tank; 8, hot water storage tank; 9, heat pipe; 901, protrusion. DETAILED DESCRIPTION

[0027] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only relates to preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0028] Example 1

[0029] See also Figure 1-2 The present embodiment provides a solar thermal collector, which includes: a collector and a thermal collection assembly; the collector includes a box body 1 and a heat absorbing plate core 2, a transparent cover plate 5 is provided on the front side of the box body 1, the heat absorbing plate core 2 is at least partially located in the box body 1 and the heat absorbing plate core 2 is at least partially provided in the thermal collection assembly; sunlight passes through the transparent cover plate 5 and irradiates the heat absorbing plate core 2, the heat absorbing plate core 2 absorbs heat and transfers the heat to the water in the thermal collection assembly to heat the water in the thermal collection assembly.

[0030] In the scheme of this example, a transparent cover plate 5 is provided on the front side of the box body 1. In a specific embodiment, the transparent cover plate 5 can be transparent glass. On the one hand, the box body 1 can protect the heat absorbing plate core 2, prevent the heat absorbing plate core 2 from being exposed to the outside world and accelerating aging, which is beneficial to improving the service life of the heat absorbing plate core 2. On the other hand, the transparent cover plate 5 is provided on the front side of the box body 1 to avoid blocking sunlight, thereby ensuring the heat absorption efficiency of the heat absorbing plate core 2. On the other hand, the closed environment formed by the box body 1 itself can keep the part of the heat absorbing plate core 2 in the box body 1 warm, which is beneficial to improving the heat utilization efficiency.

[0031] In the solution of this example, the heat absorbing plate core 2 can adopt any existing or future developed heat core, such as a flat plate collector, a vacuum tube collector, a heat pipe 9, etc. This application does not limit this.

[0032] In the solution of this example, the heat absorbing plate core 2 directly penetrates into the heat collecting assembly, thereby exchanging heat with the water in the heat collecting assembly, thereby heating the water in the heat collecting assembly. At the same time, this embedded setting method does not require welding and fixing, is simple and convenient to install, and avoids the technical problem of corrosion and water leakage at the weld. Optionally, a flexible connection sleeve can be set at the position where the heat absorbing plate core 2 is embedded in the heat collecting assembly to prevent water leakage of the heat collecting assembly. The flexible connection sleeve can be selected according to actual needs and will not be described in detail.

[0033] It is understandable that a support frame can be provided outside the heat collector and the heat collection assembly for external fixation. The specific fixing method can be selected according to actual needs and will not be described in detail.

[0034] In summary, according to the above scheme, the solar collector of this example is easy to install, not prone to corrosion and leakage, and has a long service life.

[0035] like Figure 1 As shown, the heat collection assembly includes a heat collection tank 3, a heat absorbing plate core 2 is arranged in the tank body 1, and the top of the heat absorbing plate core 2 passes through the tank body 1 and is arranged inside the heat collection tank 3 (that is, the top of the heat absorbing plate core 2 is embedded in the heat collection tank 3). In the solution of this example, the top of the heat absorbing plate core 2 is directly embedded in the heat collection tank 3, and the heat transfer efficiency is high. Moreover, this method of directly embedding the heat absorbing plate core 2 in the heat collection tank 3 is simple to install, without welding, which is conducive to avoiding the technical problem of corrosion and leakage at the weld.

[0036] In the scheme of this embodiment, a first flexible transition sleeve (not shown in the figure) is provided at the connection between the heat absorbing plate core 2 and the heat collecting tank 3 for sealing the gap between the wall of the heat collecting tank 3 and the heat absorbing plate core 2. In a specific embodiment, the first flexible transition sleeve is made of silicone material, the outer side of the first flexible transition sleeve is adapted to the shape of the embedding opening on the heat collecting tank 3 for embedding the heat absorbing plate core 2, and the inner side of the first flexible transition sleeve is interference fit with the heat absorbing plate core 2. Therefore, this scheme can avoid water leakage of the heat collecting tank 3 by providing a flexible transition sleeve. And this method is simple to install, efficient and low cost.

[0037] like Figure 2As shown, a heat-insulating layer 4 is provided in the box body 1, and the heat-insulating layer 4 is located on the side of the heat-absorbing plate core 2 away from the transparent cover plate 5. The heat-insulating layer 4 can be made of any existing or future heat-insulating material, for example, it can be heat-insulating cotton. In the scheme of this example, by providing the heat-insulating layer 4, the heat-absorbing plate core 2 can be insulated, the heat loss of the heat-absorbing plate core 2 can be reduced, and the heat utilization rate can be improved. At the same time, the heat-insulating layer 4 can support the heat-absorbing plate core 2 and improve the overall structural strength.

[0038] In an optional solution of this embodiment, the heat absorbing plate core 2 is composed of heat pipes 9. Figure 3 As shown, the inner wall of the heat pipe 9 is provided with a plurality of protrusions 901 , and the arc cutting angle of the protrusions 901 is greater than the medium wetting angle of the medium in the heat pipe 9 .

[0039] In this solution, the actual components of the medium in the heat pipe 9 include but are not limited to water, organic alcohol, etc. Those skilled in the art can select according to actual needs and will not be described in detail.

[0040] In this solution, the heat absorbing plate core 2 is composed of a heat pipe 9, which can be a flat heat pipe.

[0041] The above scheme can facilitate the evaporation of the medium in the heat pipe 9 by providing a protrusion 901 on the inner wall of the heat pipe 9 and making the arc cutting angle of the protrusion 901 larger than the medium wetting angle of the medium in the heat pipe 9, thereby facilitating the improvement of heat conduction efficiency, reducing heat loss, and further improving the heat collection efficiency of the solar collector.

[0042] In the scheme of this embodiment, the heat absorbing plate core 2 is composed of a microporous flat heat pipe 9, and the surface of the microporous flat heat pipe 9 is coated with a heat absorbing coating. The heat absorbing coating can be any low-radiation and high-heat absorbing coating currently available or developed in the future, which will not be described in detail. In this scheme, by using microporous flat heat pipes 9 to form the heat absorbing plate core 2 and coating the surface of the microporous flat heat pipes 9 with a heat absorbing coating, it is helpful to improve the heat absorption efficiency of the heat absorbing plate core 2, thereby helping to improve the working efficiency of the solar collector.

[0043] Example 2

[0044] The difference between this embodiment and embodiment 1 is mainly that the heat collection components are different. Figure 4-5 The heat collection assembly includes a heat collection water pipe, and the water outlet of the heat collection water pipe is connected to a heat storage tank 8; the heat absorption plate core 2 is at least partially located in the tank 1 and part of the heat absorption plate core 2 is arranged in the heat collection water pipe to heat the water in the heat collection water pipe. After the water in the heat collection water pipe is heated by the heat absorption plate core 2, it flows into the heat storage tank 8. For the convenience of representation, Figure 4 Only part of the water pipe section of the heat collecting water pipe is shown.

[0045] In the above technical solution, part of the heat absorbing plate core 2 is arranged in the heat collecting water pipe, thereby directly heating the water in the heat collecting water pipe. In this solution, part of the heat absorbing plate core 2 is embedded in the heat collecting water pipe, which is easy to install and does not require welding, which helps to avoid water leakage.

[0046] In this embodiment, the heat collecting pipe is arranged outside the box 1, the heat absorbing plate core 2 is arranged inside the box 1, and the top of the heat absorbing plate core 2 passes through the box 1 and is arranged inside the heat collecting pipe (that is, the top of the heat absorbing plate core 2 is embedded in the heat collecting pipe). In this scheme, the part of the heat absorbing plate core 2 located outside the box 1 can be embedded in the heat collecting pipe, which is convenient for installation and does not require welding, and can avoid corrosion and leakage. In a further scheme of this embodiment, the connection between the heat absorbing plate core 2 and the heat collecting pipe can be provided with a second flexible transition sleeve for sealing the gap between the wall of the heat collecting pipe and the heat absorbing plate core 2. Specifically, the second flexible transition sleeve can be made of silicone, the outer side of the second flexible transition sleeve can be adapted to the shape of the embedding port on the heat collecting pipe for embedding the heat absorbing plate core 2, and the inner side of the second flexible transition sleeve can be interference fit with the heat absorbing plate core 2. This scheme helps to improve the sealing performance of the connection between the heat collecting pipe and the heat absorbing plate core 2 to avoid leakage.

[0047] like Figure 6 As shown, in some solutions of this embodiment, there are multiple collectors, and the multiple collectors are distributed in sequence along the water flow direction in the heat collecting water pipe. In this case, the top of the heat absorbing plate core 2 of each collector is embedded in the heat collecting water pipe. Figure 6 In the figure, the number of collectors is 5. It can be understood that the specific number of collectors can be set according to actual use needs, and this application does not limit the specific number.

[0048] The above-mentioned arrangement can simultaneously utilize multiple collectors to form a large-area solar thermal collection system, which helps to improve the heat utilization efficiency. The water in the heat collection water pipe is heated by multiple collectors in turn when flowing in the pipe, and the heating efficiency is high.

[0049] exist Figure 6 In the embodiment shown, the water inlet end of the hot water collecting pipe is connected to a cold water tank 7, and the water in the cold water tank 7 flows into the hot water storage tank 8 after being heated in the hot water collecting pipe. It can be understood that in order to make the water in the hot water collecting pipe flow, a water pump can be set in the hot water collecting pipe or the cold water tank 7 for driving, which will not be described in detail.

[0050] In an embodiment not shown in the present application, the water inlet end of the heat collecting pipe can also be connected to a municipal water pipeline, that is, the municipal water pipeline is used as a water source. The water in the heat collecting pipe can flow under the pipeline pressure of the municipal water pipeline.

[0051] Example 3

[0052] The main difference between this embodiment and embodiment 2 is that the location of the heat collecting water pipe is different. Figure 7-8 , the heat collecting pipe passes through the box 1, the heat absorbing plate core 2 is arranged in the box 1, and the top of the heat absorbing plate core 2 is arranged in the heat collecting section of the heat collecting pipe (that is, the top of the heat absorbing plate core 2 is embedded in the heat collecting pipe), and the heat collecting section is the water pipe section of the heat collecting pipe located in the box 1. For the convenience of representation, Figure 7 Only part of the water pipe section of the heat collecting water pipe is shown.

[0053] In the solution of this embodiment, the heat collection section is located inside the box 1, so the box 1 can keep the heat collection section of the heat collection water pipe warm, thereby helping to avoid heat loss and improve heat utilization efficiency.

[0054] In a further solution of this embodiment, a third flexible transition sleeve is provided at the connection between the heat absorbing plate core 2 and the heat collecting section for sealing the gap between the heat collecting section pipe wall and the heat absorbing plate core 2. Specifically, the third flexible transition sleeve can be made of silicone, the outer side of the third flexible transition sleeve can be adapted to the shape of the embedding opening on the heat collecting water pipe for embedding the heat absorbing plate core 2, and the inner side of the third flexible transition sleeve can be interference fit with the heat absorbing plate core 2. This solution helps to improve the sealing performance of the connection between the heat collecting water pipe and the heat absorbing plate core 2 to avoid water leakage.

[0055] In some solutions of this embodiment, there are multiple heat collectors, and the multiple heat collectors are distributed in sequence along the water flow direction in the heat collecting water pipe. In this case, the heat collecting water pipe can pass through the box 1 of each heat collector in sequence, and the top of the heat absorbing plate core 2 in each box 1 is embedded in the heat collecting water pipe.

[0056] In the description of the present application, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0057] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, components, parts and / or combinations thereof.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0060] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application. The scope of protection of the present application is defined by the attached claims and their equivalents.

Claims

1. A solar thermal collector, characterized in that: include: A heat collector and a heat collecting assembly; the heat collector comprises a box body and a heat absorbing plate core, a transparent cover is provided on the front side of the box body, the heat absorbing plate core is at least partially located in the box body and the heat absorbing plate core is partially provided in the heat collecting assembly; sunlight passes through the transparent cover plate and irradiates the heat absorbing plate core, the heat absorbing plate core absorbs heat and transfers the heat to the water in the heat collecting assembly to heat the water in the heat collecting assembly.

2. The solar thermal collector according to claim 1, characterized in that: The heat collection assembly comprises a heat collection tank, the heat absorption plate core is arranged in the tank, and the top of the heat absorption plate core passes through the tank and is arranged inside the heat collection tank.

3. The solar thermal collector according to claim 2, characterized in that: A first flexible transition sleeve for sealing the gap between the wall of the heat collecting tank and the heat absorbing plate core is provided at the connection between the heat collecting tank and the heat absorbing plate core.

4. The solar thermal collector according to claim 1, characterized in that: The heat collection assembly includes a heat collection water pipe, and the water outlet end of the heat collection water pipe is connected to a heat storage tank; the heat absorption plate core is at least partially located in the tank body and the heat absorption plate core is partially arranged in the heat collection water pipe to heat the water in the heat collection water pipe. After the water in the heat collection water pipe is heated by the heat absorption plate core, it flows into the heat storage tank.

5. The solar thermal collector according to claim 4, characterized in that: There are multiple heat collectors, and the multiple heat collectors are distributed in sequence along the water flow direction in the heat collecting water pipe.

6. The solar thermal collector according to claim 4, characterized in that: The heat collecting water pipe is arranged outside the box body, the heat absorbing plate core is arranged inside the box body, and the top of the heat absorbing plate core passes through the box body and is arranged inside the heat collecting water pipe.

7. The solar thermal collector according to claim 4, characterized in that: The heat collecting water pipe passes through the box body, the heat absorbing plate core is arranged in the box body, and the top of the heat absorbing plate core is arranged in the heat collecting section of the heat collecting water pipe, and the heat collecting section is the water pipe section of the heat collecting water pipe located in the box body.

8. The solar thermal collector according to any one of claims 1 to 7, characterized in that: A heat-insulating layer is arranged in the box body, and the heat-insulating layer is located at a side of the heat-absorbing plate core away from the transparent cover plate.

9. The solar thermal collector according to any one of claims 1 to 7, characterized in that: The heat absorbing plate core is composed of a heat pipe, and a plurality of protrusions are arranged on the inner wall of the heat pipe. The arc cutting angle of the protrusions is greater than the medium wetting angle of the medium in the heat pipe.

10. The solar thermal collector according to any one of claims 1 to 7, characterized in that: The heat absorbing plate core is composed of a microporous flat heat pipe, and the surface of the microporous flat heat pipe is coated with a heat absorbing paint.

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