Solar energy collector and solar water heating system

Abstract

The application belongs to the technical field of solar water heaters, and particularly relates to a solar heat collector and a solar water heating system. The solar heat collector comprises a shell, a heat absorption part, a transparent cover plate and a first heat insulation part. The heat absorption part is located in the shell and is used for absorbing solar energy. The transparent cover plate is arranged on the shell and forms a heat absorption cavity with the heat absorption part. The first heat insulation part is connected with the shell and is located between the heat absorption part and the transparent cover plate. The first heat insulation part divides the heat absorption cavity into two sub heat absorption cavities. The solar heat collector provided in the application can reduce the heat loss of the transparent cover plate, reduce the heat loss of the solar heat collector and improve the thermal efficiency of the solar heat collector.

Description

Technical Field

[0001] This application belongs to the field of solar water heater technology, specifically relating to a solar collector and a solar water heating system. Background Technology

[0002] A solar water heating system includes a collector, a storage tank, and a water circulation assembly. The collector is a non-concentrating component used to receive solar radiation and transfer heat to the heat transfer medium in the solar water heater system.

[0003] In the prior art, the solar collector includes a shell, a heat absorber, a heat collection tube, and a glass cover. The glass cover is placed on the shell to form a heat collection cavity together with the shell. The heat absorber and the heat collection tube are located inside the heat collection cavity. The glass cover is used to allow solar radiation to pass through. The heat absorber absorbs solar energy and converts it into heat energy, which is then transferred to the heat collection tube. The heat collection tube is used to allow the flow of heat transfer medium. The heat collection tube transfers the heat energy to the water storage tank through the heat transfer medium.

[0004] However, the heat on the aforementioned heat-absorbing element will be transferred to the glass cover plate through thermal convection, and the glass cover plate will dissipate heat to the outside of the collector. The heat loss of the glass cover plate is relatively large, resulting in a large heat loss of the collector and a low thermal efficiency of the collector. Utility Model Content

[0005] This application provides a solar collector and a solar water heating system to solve the problem that the heat loss of the glass cover plate is large, resulting in large heat loss and low thermal efficiency of the collector.

[0006] On the one hand, this application provides a solar collector, comprising:

[0007] shell;

[0008] A heat-absorbing element, located inside the outer casing, is used to absorb solar energy;

[0009] A transparent cover plate is placed on the outer shell, and the transparent cover plate and the heat-absorbing element together form a heat-absorbing cavity;

[0010] A first heat insulation element is disposed between the heat absorption element and the transparent cover plate to divide the heat absorption cavity into two sub-heat absorption cavities.

[0011] In some possible implementations, the first thermal insulation element is at least partially transparent.

[0012] In some possible implementations, the first heat insulation element has a vacuum cavity; or, the sub-heat absorption cavity between the first heat insulation element and the transparent cover plate is a vacuum cavity.

[0013] In some possible implementations, the first thermal insulation element includes a thermal insulation element body and at least one support frame connected to the periphery of the thermal insulation element body, the support frame being located between the thermal insulation element body and the transparent cover plate, and the support frame being connected to the outer shell.

[0014] In some possible implementations, the heat insulation body includes a transparent film.

[0015] In some possible implementations, the housing includes a base plate and a frame, the frame including a connecting section, a first mounting section and a second mounting section, the first mounting section and the second mounting section being spaced apart and disposed on the same side of the connecting section, the first mounting section being connected to the base plate;

[0016] The support frame is disposed between the second mounting section and the transparent cover plate, and the connecting section is connected to the transparent cover plate.

[0017] In some possible implementations, a second heat insulation element is also included, which is disposed between the first mounting section and the second mounting section.

[0018] In some possible implementations, a third heat insulation element is also included, which is disposed within the housing and on the side of the heat-absorbing element opposite to the transparent cover.

[0019] In some possible implementations, at least one seal is also included, the seal connecting the first thermal insulation to the housing, and / or the seal sealingly connecting the first thermal insulation to the transparent cover.

[0020] On the other hand, this application provides a solar water heating system, including a water storage tank and any of the aforementioned solar collectors connected to the water storage tank.

[0021] The solar collector and solar water heating system provided in this application have a first heat insulation component between the heat absorber and the transparent cover plate. The first heat insulation component divides the heat absorption chamber into two sub-heat absorption chambers. By setting the first heat insulation component, the thermal resistance between the heat absorber and the transparent cover plate is increased, thereby reducing the heat transfer coefficient between the heat absorber and the transparent cover plate. This reduces the heat transferred from the heat absorber to the transparent cover plate, reduces the heat conduction between the transparent cover plate and the outside air of the solar collector, reduces the heat loss of the transparent cover plate, and thus reduces the heat loss of the solar collector and improves the thermal efficiency of the solar collector. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the structure of a solar collector provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 A cross-sectional view of a solar collector in China;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0027] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0028] Figure 6 for Figure 2 A partial sectional view of the central support frame;

[0029] Figure 7 for Figure 6 Enlarged diagram of point D in the middle.

[0030] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Outer shell; 110 - Base plate; 120 - Frame; 121 - Connecting section; 122 - First mounting section; 123 - Second mounting section; 124 - Third mounting section; 125 - First limiting part; 126 - Second snap-fit ​​part; 130 - Pressure strip; 131 - First snap-fit ​​part;

[0033] 200 - Heat-absorbing element;

[0034] 300-Transparent cover;

[0035] 400 - First thermal insulation component; 410 - Thermal insulation component body; 420 - Support frame; 421 - Second limiting part; 422 - First support section; 423 - Second support section; 424 - Connector; 430 - Mounting component;

[0036] 500 - Second thermal insulation component;

[0037] 600 - Third thermal insulation component;

[0038] 700 - Seals;

[0039] 800-Heat collector tube. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In existing technology, a solar collector includes a shell, a heat absorber, a heat collecting tube, and a glass cover. The glass cover is placed on the shell to form a heat collecting cavity within the shell. The heat absorber and heat collecting tube are located within the heat collecting cavity. The heat absorber absorbs solar energy and converts it into heat energy, which is then transferred to the heat collecting tube. The heat collecting tube is used for the flow of a heat transfer medium, which transfers the heat energy to a water storage tank. The heat absorber transfers heat to the glass cover through thermal convection, and the glass cover transfers heat energy to the outside air of the solar collector through thermal conduction. This means the glass cover dissipates heat, resulting in significant heat loss and low thermal efficiency in the solar collector. Furthermore, the heat loss from the glass cover often accounts for more than 70% of the total heat loss of the solar collector, indicating a significant impact on the overall heat loss of the solar collector.

[0042] It should be noted that the thermal efficiency of a solar collector refers to the ratio of the effective heat energy output by the collector to the solar radiation energy absorbed by the collector. The greater the heat loss of the collector, the lower its thermal efficiency.

[0043] Based on this, this application provides a solar collector in which a first heat insulation component is provided between the heat absorber and the transparent cover. The first heat insulation component divides the heat absorption chamber into two sub-heat absorption chambers. Thus, by providing the first heat insulation component, the thermal resistance between the heat absorber and the transparent cover is increased, thereby reducing the heat transfer coefficient between the heat absorber and the transparent cover. This reduces the heat transferred from the heat absorber to the transparent cover, reduces the heat conduction between the transparent cover and the air outside the solar collector, reduces the heat loss of the transparent cover, and thus reduces the heat loss of the solar collector, thereby improving the thermal efficiency of the solar collector.

[0044] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0045] Reference Figure 1 and Figure 2As shown in the embodiment of this application, the solar collector includes: a shell 100, a heat absorber 200, a transparent cover 300, and a first heat insulation member 400. The heat absorber 200 is located inside the shell 100 and is used to absorb solar energy; the transparent cover 300 covers the shell 100, and the transparent cover 300 and the heat absorber 200 together form a heat absorption cavity. The first heat insulation member 400 is disposed between the heat absorber 200 and the transparent cover 300 to divide the heat absorption cavity into two sub-heat absorption cavities.

[0046] The transparent cover plate 300 can be a transparent glass cover plate. The first heat insulation element 400 is a transparent first heat insulation element.

[0047] The solar collector can be a flat-plate solar collector. The solar collector also includes a collector tube 800 disposed on the side of the absorber 200 opposite to the transparent cover 300, with the collector tube 800 in contact with the absorber 200. The collector tube 800 is used for the flow of a heat transfer medium and is connected to the water storage tank of the solar water heating system. Heat from the absorber 200 is transferred to the heat transfer medium through the collector tube 800, which then flows through the collector tube 800 into the water storage tank of the solar water heating system, thereby transferring heat to the water in the tank and heating it.

[0048] For example, the solar collector tube 800 includes a first solar collector tube, a second solar collector tube, and a plurality of parallel and spaced branch pipes. The two ends of each branch pipe are connected to the first and second solar collector tubes, respectively. One of the first and second solar collector tubes has an inlet, and the other has an outlet. The inlet and outlet are connected to the storage tank of the solar water heating system via corresponding pipes. Specifically, each branch pipe of the solar collector tube 800 is in contact with the heat absorber 200. The branch pipe absorbs heat from the heat absorber 200 and transfers the heat to the heat transfer medium within the branch pipe.

[0049] Furthermore, the outer casing 100 has at least two clearance holes, at least one end of the first heat collector tube extends out of the outer casing 100 through the clearance hole, and at least one end of the second heat collector tube extends out of the outer casing 100 through the clearance hole, so that the first heat collector tube and the second heat collector tube can be connected to the water storage tank of the solar water heating system.

[0050] Solar radiation shines through the transparent cover plate 300 onto the heat absorber 200, which absorbs the solar radiation and converts it into heat energy. Heat exchange occurs between the collector tube 800 and the heat absorber 200. The heat energy in the heat absorber 200 is conducted through the collector tube 800 to the heat transfer medium inside the collector tube 800, and then transferred to the storage tank of the solar water heating system through the heat transfer medium.

[0051] Specifically, a heat-absorbing cavity is formed between the transparent cover plate 300 and the heat-absorbing element 200. The first heat-insulating element 400 is connected to the outer shell 100 and is disposed between the heat-absorbing element 200 and the transparent cover plate 300, dividing the heat-absorbing cavity into two sub-heat-absorbing cavities. This makes heat conduction less likely between the first heat-insulating element 400 and the heat-absorbing element 200, and between the first heat-insulating element 400 and the transparent cover plate 300. Furthermore, the smaller distance between the first heat-insulating element 400 and the heat-absorbing element 200, and between the first heat-insulating element 400 and the transparent cover plate 300, compared to the distance between the heat-absorbing element 200 and the transparent cover plate 300, restricts heat convection between the first heat-insulating element 400 and the heat-absorbing element 200, and between the first heat-insulating element 400 and the transparent cover plate 300, increasing the thermal resistance between the heat-absorbing element 200 and the transparent cover plate 300, thereby reducing heat convection between the heat-absorbing element 200 and the transparent cover plate 300. Therefore, by setting the first heat insulation element 400, the heat transferred from the heat absorption element 200 to the transparent cover plate 300 can be reduced.

[0052] The solar collector provided in this application embodiment has a first heat insulation member 400 disposed between the heat absorption member 200 and the transparent cover plate 300. The first heat insulation member 400 divides the heat absorption chamber into two sub-heat absorption chambers. Thus, by providing the first heat insulation member 400, the thermal resistance between the heat absorption member 200 and the transparent cover plate 300 is increased, thereby reducing the heat transfer coefficient between the heat absorption member 200 and the transparent cover plate 300. This reduces the heat transferred from the heat absorption member 200 to the transparent cover plate 300, reduces the heat conduction between the transparent cover plate 300 and the air outside the solar collector, reduces the heat dissipation loss of the transparent cover plate 300, thereby reducing the heat loss of the solar collector and improving the thermal efficiency of the solar collector.

[0053] In practice, the first heat insulation element 400 is at least partially transparent. This allows solar radiation to pass through the first heat insulation element 400, thus facilitating the absorption of solar radiation by the heat absorption element 200.

[0054] In some embodiments, the first heat insulation member 400 has a vacuum cavity, or the sub-heat absorption cavity formed between the first heat insulation member 400 and the transparent cover plate 300 is a vacuum cavity.

[0055] By setting up a vacuum chamber, the heat convection between the heat absorber 200 and the transparent cover plate 300 is further reduced, the heat transfer coefficient between the heat absorber 200 and the transparent cover plate 300 is reduced, and thus the heat transferred from the heat absorber 200 to the transparent cover plate 300 is reduced.

[0056] For example, the first thermal insulation 400 may be a multi-layered structure to form a vacuum cavity within the first thermal insulation 400.

[0057] In other examples, the first heat insulation element 400 and the transparent cover plate 300 may both be sealed to the housing 100 to ensure the vacuum level of the vacuum cavity formed between the first heat insulation element 400 and the transparent cover plate 300.

[0058] Reference Figure 3 , Figure 4 and Figure 5 As shown, in a specific implementation, the first heat insulation component 400 includes a heat insulation component body 410 and at least one support frame 420 connected to the periphery of the heat insulation component body 410. The support frame 420 is located between the heat insulation component body 410 and the transparent cover plate 300, and the support frame 420 is connected to the outer shell 100.

[0059] The support frame 420 is provided to facilitate the connection between the first heat insulation element 400 and the outer shell 100. One side of the support frame 420 is connected to the transparent cover plate 300, and the other side of the support frame 420 is connected to the heat insulation element body 410, so that there is a gap between the heat insulation element body 410 and the transparent cover plate 300, thereby forming a sub-heat absorption cavity between the heat insulation element body 410 and the transparent cover plate 300.

[0060] For example, the cross-section of the support frame 420 is rectangular.

[0061] In some examples, the support frame 420 has a first connecting portion and the insulation body 410 has a second connecting portion, with the first connecting portion and the second connecting portion correspondingly connected to connect the insulation body 410 to the support frame 420.

[0062] For example, the first heat insulation component 400 also includes a mounting component 430, the first connecting part is a first connecting hole, the second connecting part is a second connecting hole, and the mounting component 430 is inserted into the first connecting hole and the second connecting hole to connect the first connecting part and the second connecting part through the mounting component 430.

[0063] Reference Figure 6 and Figure 7 The support frame 420 includes at least two first support sections 422 and at least two second support sections 423. Each first support section 422 is parallel to the other, and each second support section 423 is parallel to the other. The first support sections 422 and the second support sections 423 are perpendicular to each other. The two first support sections 422 and the two second support sections 423 together form a rectangular frame. The rectangular frame is connected to the periphery of the heat insulation body 410.

[0064] For example, there are three first support segments 422 and two second support segments 423. One of the first support segments 422 is located within the rectangular frame. The first support segment 422 connects the middle regions of the two second support segments 423, and the two sides of the first support segment 422 are respectively connected to the transparent cover plate 300 and the heat insulation body 410 to ensure that the middle region of the heat insulation body 410 is accurately positioned and that the middle region of the heat insulation body 410 does not come into contact with the transparent cover plate 300 and the heat absorber 200.

[0065] The support frame 420 also includes a connector 424, which connects the first support segment 422 and the second support segment 423. Specifically, the connector 424 includes a first straight segment and a second straight segment connected to the first straight segment. The first and second straight segments are perpendicular to each other. One of the first straight segments is connected to the first support segment 422, and the other is connected to the second support segment 423. The first and second straight segments can be connected to the first and second support segments 422 and 423 respectively using fasteners.

[0066] For example, the first straight segment is connected to the first support segment 422, and the first straight segment can be located inside or outside the first support segment 422. The second straight segment is connected to the second support segment 423, and the second straight segment can be located inside or outside the second support segment 423.

[0067] In other examples, the insulation body 410 may be bonded to the support frame 420.

[0068] In some embodiments, the heat insulation body 410 includes a transparent film.

[0069] The transparent film is transparent, allowing solar radiation to pass through, so that the heat absorber 200 can absorb solar energy.

[0070] For example, the transparent film can be a multi-layer structure with air gaps between the layers to increase the thermal resistance of the transparent film, further improve the heat insulation performance of the transparent film, thereby reducing the heat transferred from the transparent film to the transparent cover plate 300, reducing the heat dissipation of the transparent cover plate 300, and reducing the heat loss of the solar collector.

[0071] Reference Figure 3 and Figure 4As shown, in a specific implementation, the outer casing 100 includes a base plate 110 and a frame 120. The frame 120 includes a connecting section 121, a first mounting section 122, and a second mounting section 123. The first mounting section 122 and the second mounting section 123 are spaced apart and disposed on the same side of the connecting section 121. The first mounting section 122 is connected to the base plate 110. A support frame 420 is disposed between the second mounting section 123 and the transparent cover plate 300, and the connecting section 121 is connected to the transparent cover plate 300.

[0072] The frame 120 is connected to the periphery of the base plate 110, and the transparent cover 300 is parallel to the base plate 110. The base plate 110, the frame 120, and the transparent cover 300 together define the receiving cavity, and the heat-absorbing member 200 and the first heat-insulating member 400 are both located inside the receiving cavity.

[0073] The support frame 420 connects the frame 120 to the transparent cover plate 300 to improve the stability and reliability of the support frame 420. The heat insulation body 410 is connected to the side of the support frame 420 away from the transparent cover plate 300, so that there is an air gap between the heat insulation body 410 and the transparent cover plate 300, thereby reducing the heat transfer coefficient between the heat insulation body 410 and the transparent cover plate 300 and reducing the heat loss of the solar collector.

[0074] For example, the base plate 110 is a rectangular plate, and the frame 120 is a rectangular frame.

[0075] In a specific implementation, the frame 120 has at least one first limiting part 125, and the support frame 420 has at least one second limiting part 421. The first limiting part 125 and the second limiting part 421 are correspondingly connected. In this way, the stability and reliability of the support frame 420 can be improved.

[0076] For example, the frame 120 has a protrusion forming a first limiting portion 125. The support frame 420 has two spaced-apart extensions, both of which abut against the frame 120, and one of the extensions forms a second limiting portion 421. The first limiting portion 125 abuts against the side of the second limiting portion 421 facing the heat absorption cavity, so that the second limiting portion 421 is limited by the first limiting portion 125, thereby limiting the support frame 420.

[0077] Furthermore, the two second limiting portions 421 are disposed on the same side of the support frame 420, and the two second limiting portions 421 are parallel to each other. The first connecting portion is located on the support frame 420, and the first connecting portion is located between the two second limiting portions 421.

[0078] The first mounting section 122 and the second mounting section 123 are provided to facilitate the connection between the frame 120 and the base plate and the support frame 420.

[0079] For example, the connecting segment 121 is rectangular, and the first mounting segment 122 and the second mounting segment 123 are both disposed inside the connecting segment 121.

[0080] In some examples, the first mounting section 122 includes a first connecting plate and a limiting plate. The first connecting plate is connected to the connecting section 121 and the base plate 110. The limiting plate is connected to the side of the first connecting plate facing the second mounting section 123, and a portion of the base plate 110 is located between the first connecting plate and the limiting plate. Thus, the limiting plate can limit the portion of the base plate 110.

[0081] In some examples, the first limiting part 125 is located on the side of the second mounting section 123 opposite to the first mounting section 122.

[0082] Reference Figure 3 and Figure 4 As shown, in a specific implementation, the outer casing 100 further includes a pressure strip 130; the pressure strip 130 is pressed onto the periphery of the transparent cover plate 300, and the pressure strip 130 is connected to the frame 120. The frame 120 also includes a third mounting section 124, which is connected to the connecting section 121, and the third mounting section 124 is located on the side of the second mounting section 123 opposite to the first mounting section 122, and the pressure strip 130 is connected to the third mounting section 124.

[0083] For example, the pressure strip 130 has a first snap-fit ​​portion 131, and the third mounting section 124 has a second snap-fit ​​portion 126, with the first snap-fit ​​portion 131 snapping into the second snap-fit ​​portion 126. The first snap-fit ​​portion 131 and the second snap-fit ​​portion 126 may both be snap-fit ​​protrusions, or one of the first snap-fit ​​portion 131 and the second snap-fit ​​portion 126 may be a snap-fit ​​protrusion, and the other may be a slot or hole that matches the snap-fit ​​protrusion.

[0084] In some examples, the pressure strip 130 includes a pressing section, a snap-fit ​​section, and a fixing section, with the snap-fit ​​section and the fixing section located on the same side of the pressing section. The pressing section is pressed onto the periphery of the transparent cover plate 300, the first snap-fit ​​portion 131 is located on the snap-fit ​​section, and the fixing section is connected to the connecting section 121.

[0085] In some examples, the third mounting section 124 includes a horizontal section and a vertical section, the horizontal section being perpendicular to the connecting section 121, one side of the horizontal section connecting to the connecting section 121, and the other side of the horizontal section connecting to the vertical section. The second snap-fit ​​portion 126 is located on the side of the vertical section facing the connecting section 121.

[0086] Reference Figure 2 and Figure 3 As shown, in some embodiments, the solar collector provided in this application further includes a second heat insulation member 500, which is disposed between the first mounting section 122 and the second mounting section 123.

[0087] The second heat insulation component 500 can abut between the first mounting section 122 and the second mounting section 123, and the second heat insulation component 500 can abut with the connecting section 121.

[0088] For example, the second insulation element 500 can be insulation foam.

[0089] Thus, by setting the second heat insulation element 500, the heat conduction between the inner shell 100 and the frame 120 can be reduced, thereby reducing the heat transferred from the heat collection tube 800 and the heat absorption element 200 to the frame 120, and reducing the heat transferred from the frame 120 to the outside of the solar collector, thereby reducing the heat loss of the solar collector and improving the thermal efficiency of the solar collector.

[0090] Reference Figure 2 and Figure 3 As shown, in some embodiments, the solar collector provided in this application further includes a third heat insulation element 600, which is disposed inside the outer casing 100 and on the side of the heat absorption element 200 away from the transparent cover plate 300.

[0091] The third heat insulation component 600 abuts between the heat collection tube 800 and the base plate 110.

[0092] For example, the third insulation element 600 can be insulation foam.

[0093] In some examples, the periphery of the third insulation 600 may abut against the second insulation 500.

[0094] Thus, by setting a third heat insulation component 600, the heat conduction between the heat collection tube 800 and the base plate 110 can be reduced, thereby reducing the heat transferred from the heat collection tube 800 to the base plate 110 and the heat transferred from the base plate 110 to the outside of the solar collector, thereby reducing the heat loss of the solar collector and improving the thermal efficiency of the solar collector.

[0095] Reference Figure 4 As shown, in some embodiments, the solar collector provided in this application further includes at least one sealing element 700, which seals the first heat insulation element 400 to the outer shell 100, and / or seals the first heat insulation element 400 to the transparent cover plate 300.

[0096] By setting a sealing element 700, the transparent cover plate 300 and the first heat insulation element 400, as well as the transparent cover plate 300 and the heat absorption element 200 are in a sealed state, which can reduce the heat convection inside the outer shell 100, thereby reducing the heat transfer loss of the solar collector and improving the thermal efficiency of the solar collector.

[0097] For example, a portion of the seal 700 is located between the support frame 420 and the housing 100 to seal the connection between the support frame 420 and the housing 100, while the remaining portion of the seal 700 is located between the support frame 420 and the transparent cover plate 300 to seal the connection between the support frame 420 and the transparent cover plate 300.

[0098] In practice, the sealing element 700 can be a sealant. The support frame 420 is bonded to the outer shell 100 and the transparent cover 300 using the sealant, ensuring a sealed connection between the transparent cover 300 and the first heat insulation element 400, as well as between the transparent cover 300 and the heat-absorbing element 200. Furthermore, bonding the support frame 420 to the outer shell 100 and the transparent cover 300 using sealant is relatively convenient.

[0099] Based on the above embodiments, this application also provides a solar water heating system, including a water storage tank and any of the solar collectors in the above embodiments connected to the water storage tank.

[0100] The specific structure of the solar collector has been described in detail in the above embodiments, and will not be repeated here.

[0101] The solar water heating system provided in this application embodiment uses a first heat insulation component 400 between the heat absorber 200 and the transparent cover plate 300 to divide the heat absorption chamber into two sub-heat absorber chambers. This increases the thermal resistance between the heat absorber 200 and the transparent cover plate 300, reducing the heat transfer coefficient between them. This, in turn, reduces the heat transferred from the heat absorber 200 to the transparent cover plate 300, reduces heat conduction between the transparent cover plate 300 and the external air of the solar collector, and reduces heat loss from the transparent cover plate 300. Ultimately, this reduces the heat loss of the solar collector and improves its thermal efficiency.

[0102] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0103] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0104] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0105] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. Unless otherwise stated, the term "multiple" means two or more.

[0106] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A solar collector, characterized in that, include: Outer shell (100); A heat absorber (200) is located inside the housing (100) and is used to absorb solar energy; A transparent cover plate (300) is placed on the outer shell (100), and the transparent cover plate (300) and the heat-absorbing element (200) together form a heat-absorbing cavity; A first heat insulation element (400) is disposed between the heat absorption element (200) and the transparent cover plate (300) to divide the heat absorption cavity into two sub-heat absorption cavities.

2. The solar collector according to claim 1, characterized in that, The first heat insulation element (400) is at least partially transparent.

3. The solar collector according to claim 1, characterized in that, The first heat insulation element (400) has a vacuum cavity; Alternatively, the sub-heat absorption cavity formed between the first heat insulation element (400) and the transparent cover plate (300) is a vacuum cavity.

4. The solar collector according to claim 1, characterized in that, The first heat insulation element (400) includes a heat insulation element body (410) and at least one support frame (420) connected to the periphery of the heat insulation element body (410). The support frame (420) is located between the heat insulation element body (410) and the transparent cover plate (300), and the support frame (420) is connected to the outer shell (100).

5. The solar collector according to claim 4, characterized in that, The heat insulation body (410) includes a transparent film.

6. The solar collector according to claim 4, characterized in that, The outer casing (100) includes a base plate (110) and a frame (120). The frame (120) includes a connecting section (121), a first mounting section (122), and a second mounting section (123). The first mounting section (122) and the second mounting section (123) are spaced apart and disposed on the same side of the connecting section (121). The first mounting section (122) is connected to the base plate (110). The support frame (420) is disposed between the second mounting section (123) and the transparent cover plate (300), and the connecting section (121) is connected to the transparent cover plate (300).

7. The solar collector according to claim 6, characterized in that, It also includes a second heat insulation element (500), which is disposed between the first mounting section (122) and the second mounting section (123).

8. The solar collector according to any one of claims 1-7, characterized in that, It also includes a third heat insulation element (600), which is disposed inside the housing (100) and is disposed on the side of the heat absorption element (200) away from the transparent cover plate (300).

9. The solar collector according to any one of claims 1-7, characterized in that, It also includes at least one seal (700) that connects the first heat insulation (400) to the housing (100), and / or, the seal (700) sealably connects the first heat insulation (400) to the transparent cover (300).

10. A solar water heating system, characterized in that, The solar collector includes a water storage tank and a solar collector as described in any one of claims 1-9 connected to the water storage tank.

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