CN220038789U - Flat-plate solar heat collector and heat-absorbing plate core - Google Patents
Flat-plate solar heat collector and heat-absorbing plate core Download PDFInfo
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- CN220038789U CN220038789U CN202320273239.0U CN202320273239U CN220038789U CN 220038789 U CN220038789 U CN 220038789U CN 202320273239 U CN202320273239 U CN 202320273239U CN 220038789 U CN220038789 U CN 220038789U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The utility model belongs to the technical field of flat-plate solar collectors, and discloses a flat-plate solar collector and a heat absorbing plate core. The heat absorption plate core of the flat-plate solar collector comprises at least one heat exchange tube, wherein the heat exchange tube comprises a water inlet section, a water inlet heat absorption section, a U-shaped bent pipe, a water outlet heat absorption section and a water outlet section which are connected in sequence, and the water inlet heat absorption section and the water outlet heat absorption section are arranged in parallel in an extending mode; the water inlet section and the water outlet section are of step-shaped structures; the U-shaped bent pipe, the water inlet section and the water outlet section are all of smooth arc structures. According to the scheme provided by the utility model, each heat exchange tube is of an integrally formed structure, so that the welding spots are reduced, and the material consumption is reduced. In addition, as all the bending parts on the heat exchange tube are smooth arc structures, the internal fluid flow resistance is effectively reduced, the heat loss is also reduced, and the heat collection efficiency of the flat-plate solar collector is improved.
Description
Technical Field
The utility model belongs to the field of flat-plate solar collectors, and particularly relates to a flat-plate solar collector and a heat absorbing plate core.
Background
With the improvement of energy conservation consciousness of human beings, solar heating is increasingly applied, and flat-plate solar collectors are the most widely applied collectors for solar heating.
Flat panel solar collectors generally comprise a heat absorbing panel core, which is the most central heat collecting component of the flat panel collector, a housing, a transparent cover plate, insulation material and related components. The common branch pipe structure of the collecting and discharging pipes on the heat absorbing plate core causes the abrupt change of the flowing side wall of the internal fluid at the branch position when the solar heat collector actually operates, so that the fluid is separated from the original flowing direction, the flow velocity distribution is readjusted along with the generation of the vortex area, the occurrence of partial overheat area at the collecting pipe is caused, the larger energy loss is caused, and the heat collecting efficiency of the flat-plate solar heat collector is reduced. For example, as shown in fig. 1, the heat absorbing plate core is composed of a circulation pipe and a heat absorbing plate, wherein the circulation pipe on the conventional heat absorbing plate comprises two transversely arranged upper headers 1, lower headers 2 and a plurality of longitudinally arranged calandria 3 between the headers, fluid in the pipe enters the calandria through the water inlet of the lower headers 2, and at the moment, the heat absorbing plate heats fluid in the calandria and flows out through the water outlet of the upper headers 1. During the flow of fluid in the tubes, the corners between the tubes and the header are suddenly increased, causing swirling, resulting in the occurrence of a superheat zone at the junction of the tubes and the header, resulting in a substantial loss of thermal energy. Therefore, there is an urgent need for a device that effectively reduces the energy loss of the absorber plate core and can improve the thermal efficiency of the flat-plate solar collector.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the flat-plate type solar collector and the heat absorbing plate core, which can effectively reduce the energy loss on the heat absorbing plate core of the flat-plate type solar collector and improve the heat efficiency of the flat-plate type solar collector.
In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:
in one aspect, a absorber plate core for a flat panel solar collector is provided.
The heat absorption plate core of the flat-plate solar collector comprises at least one heat exchange tube, wherein the heat exchange tube comprises a water inlet section, a water inlet heat absorption section, a U-shaped bent pipe, a water outlet heat absorption section and a water outlet section which are connected in sequence, and the water inlet heat absorption section and the water outlet heat absorption section are arranged in parallel in an extending mode;
the water inlet section and the water outlet section are of step-shaped structures;
the U-shaped bent pipe, the water inlet section and the water outlet section are all of smooth arc structures.
According to the technical scheme provided by the utility model, each heat exchange tube is of an integrally formed structure, so that the welding spots are reduced, and the material consumption is reduced. The heat exchange tube has the advantages that the heat exchange tube is provided with the heat absorption area, the heat absorption area of the heat absorption plate core is increased, and the heat collection efficiency of the flat-plate solar collector is further improved.
Further, the water inlet section includes:
the first water inlet section is coaxially connected with the water inlet heat absorption section;
the water inlet pipe comprises a first water inlet section, a second water inlet section and a straight pipe, wherein one end of the straight pipe is connected with the first water inlet section and extends along the direction perpendicular to the water inlet section, and the straight pipe is connected with the first water inlet section through a first bending part; the other end of the straight pipe is connected with a second water inlet section, the second water inlet section is arranged in an extending mode along the direction away from the opening of the U-shaped bent pipe, and the straight pipe is connected with the second water inlet section through a second bending part;
the water outlet section comprises:
the first water outlet section is coaxially connected with the water outlet heat absorption section;
the water outlet pipe comprises a first water outlet section, a first straight pipe and a second straight pipe, wherein one end of the first straight pipe is connected with the first water outlet section and extends along the direction perpendicular to the water outlet section, and the first straight pipe is connected with the first water outlet section through a first bending part; the other end of the straight pipe is connected with a second water inlet section, the second water outlet section extends along the direction away from the opening of the U-shaped bent pipe, and the straight pipe is connected with the second water outlet section through a second bending part.
Further, three heat exchange tubes are arranged, namely a first heat exchange tube, a second heat exchange tube and a third heat exchange tube;
the water inlet heat absorption section and the water outlet heat absorption section of the second heat exchange tube are arranged in a space between the water inlet heat absorption section and the water outlet heat absorption section of the third heat exchange tube;
the water inlet heat absorption section and the water outlet heat absorption section of the first heat exchange tube are arranged in a space between the water inlet heat absorption section and the water outlet heat absorption section of the second heat exchange tube;
the water inlet heat absorption sections of every two adjacent heat exchange tubes are identical in distance and equal to the water outlet heat absorption sections of every two adjacent heat exchange tubes.
Further, the extending direction of the straight pipe on the water inlet section after being connected with the first water inlet section is the same as the extending direction of the straight pipe on the water outlet section after being connected with the first water outlet section.
Further, the water inlet section of the heat exchange tube is connected with a water inlet joint, and the water outlet section of the heat exchange tube is connected with a water outlet joint;
the water inlet joint and/or the water outlet joint is provided with a reducing section with an inner diameter gradually changing.
Further, the water inlet joint and/or the water outlet joint comprises a first cylindrical structure, a second cylindrical structure and a truncated cone-shaped structure arranged between the first cylindrical structure and the second cylindrical structure;
wherein the diameter of the first cylindrical structure is greater than the diameter of the second cylindrical structure.
In the technical scheme provided by the utility model, the water inlet joint and/or the water outlet joint are/is provided with the diameter-variable section with the inner diameter gradually changed, so that the flow resistance of fluid is reduced, the heat loss is reduced, and the heat collection efficiency is further improved.
Further, the device also comprises a plate-shaped structure, wherein the plate-shaped structure is arranged on the first cylindrical structure perpendicular to the water flow direction;
the plate-shaped structure is provided with water passing holes which are arranged corresponding to the heat exchange tubes in number.
Further, the second water inlet section is welded on a water passing hole on the water inlet joint;
the second water outlet section is welded on the water passing hole on the water outlet joint.
According to the scheme provided by the utility model, the water inlet section is welded on the water passing hole on the water inlet connector, and the water outlet section is welded on the water passing hole on the water outlet connector, so that the tightness of the heat absorption plate core of the flat-plate solar collector is ensured.
Further, three heat exchange tubes are arranged, three water passing holes are formed in the plate-shaped structure, and connecting lines of the circle centers of the three water passing holes form an equilateral triangle;
wherein, two heat exchange tubes are arranged in a coplanar manner, and the other heat exchange tube is arranged in a non-coplanar manner with the other two heat exchange tubes.
On the other hand, the utility model also provides a flat-plate type solar collector.
The flat-plate solar collector comprises the heat absorption plate core of the flat-plate solar collector.
The flat-plate solar collector provided by the utility model has higher heat collecting efficiency and improves the use experience of users.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.
1. According to the technical scheme provided by the utility model, each heat exchange tube is of an integrally formed structure, so that the welding spots are reduced, and the material consumption is reduced.
2. According to the technical scheme provided by the utility model, all the bending parts on the heat exchange tube are of smooth arc-shaped structures, so that the internal fluid flow resistance is effectively reduced, the heat loss is reduced, and the heat collection efficiency of the flat-plate solar collector is improved.
3. According to the technical scheme provided by the utility model, the heat absorption area of the heat absorption plate core is increased because the structure is not provided with the header, and the heat collection efficiency of the flat-plate solar heat collector is further improved.
4. In the technical scheme provided by the utility model, the water inlet joint and/or the water outlet joint are/is provided with the diameter-variable section with the inner diameter gradually changed, so that the flow resistance of fluid is reduced, the heat loss is reduced, and the heat collection efficiency is further improved.
5. According to the scheme provided by the utility model, the water inlet section is welded on the water passing hole on the water inlet connector, and the water outlet section is welded on the water passing hole on the water outlet connector, so that the tightness of the heat absorption plate core of the flat-plate solar collector is ensured.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic view of a absorber plate core of a flat-panel solar collector in the background of the utility model;
FIG. 2 is a schematic view of a absorber plate core of the flat-panel solar collector of the present utility model;
FIG. 3 is a schematic view of a plate-like structure of the present utility model;
FIG. 4 is a schematic view of an inlet fitting of the present utility model;
fig. 5 is a view in the direction a in fig. 2.
In the figure: 1. an upper header; 2. a lower header; 3. a calandria; 4. a superheating area; 5. a water inlet joint; 6. a water outlet joint; 7. a water inlet section; 8. a water outlet section; 9. a water inlet heat absorption section; 10. a water outlet heat absorption section; 11. a U-shaped elbow; 12. a straight pipe; 13. a first heat exchange tube; 14. a second heat exchange tube; 15. a third heat exchange tube;
16. a plate-like structure; 17. a first water passing hole; 18. a second water passing hole; 19. a third water passing hole;
20. a first cylindrical structure; 21. a truncated cone-shaped structure; 22. a second cylindrical structure.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 2 to 5, the present utility model provides a flat-type solar collector and a heat absorbing plate core.
The heat exchange tube comprises at least one heat exchange tube, wherein the heat exchange tube comprises a water inlet section 7, a water inlet heat absorption section 9, a U-shaped bent pipe 11, a water outlet heat absorption section 10 and a water outlet section 8 which are sequentially connected, and the water inlet heat absorption section 9 and the water outlet heat absorption section 10 are arranged in parallel in an extending mode;
the water inlet section 7 and the water outlet section 8 are of step-shaped structures;
the bending parts of the U-shaped bent pipe 11, the water inlet section 7 and the water outlet section 8 are smooth arc structures.
According to the technical scheme provided by the utility model, all the bending parts on the heat exchange tube are of smooth arc-shaped structures, so that the internal fluid flow resistance is effectively reduced, the heat loss is reduced, and the heat collection efficiency of the flat-plate solar collector is improved.
On the other hand, a flat-plate solar collector is also provided.
The flat-plate type solar collector comprises the heat absorption plate core of the flat-plate type solar collector.
Example 1
As shown in fig. 2, the present embodiment provides a heat absorbing plate core of a flat-plate type solar collector.
The heat absorption plate core of the flat-plate solar collector comprises a heat exchange tube, wherein the heat exchange tube comprises a water inlet section 7, a water inlet heat absorption section 9, a U-shaped bent pipe 11, a water outlet heat absorption section 10 and a water outlet section 8 which are sequentially connected, and the water inlet heat absorption section 9 and the water outlet heat absorption section 10 are arranged in parallel in an extending mode;
the water inlet section 7 and the water outlet section 8 are of step-shaped structures;
the bending parts of the U-shaped bent pipe 11, the water inlet section 7 and the water outlet section 8 are smooth arc structures.
In the scheme provided by the embodiment, all the bending parts on the heat exchange tube are smooth arc structures, so that the internal fluid flow resistance is effectively reduced, the heat loss is also reduced, and the heat collection efficiency of the flat-plate solar collector is improved.
Specifically, the water inlet section 7 includes:
the first water inlet section and the second water inlet section are coaxially connected with the water inlet heat absorption section 9;
the water inlet pipe further comprises a straight pipe 12, one end of the straight pipe 12 is connected with the first water inlet section and extends along the direction perpendicular to the water inlet section 7, and the straight pipe 12 is connected with the first water inlet section through a first bending part; the other end of the straight pipe 12 is connected with a second water inlet section, the second water inlet section is arranged in an extending way along the opening direction far away from the U-shaped bent pipe 11, and the straight pipe 12 is connected with the second water inlet section through a second bending part;
the water outlet section 8 comprises:
the first water outlet section and the second water outlet section are coaxially connected with the water outlet heat absorption section 10;
the water outlet pipe further comprises a straight pipe 12, wherein one end of the straight pipe 12 is connected with the first water outlet section and extends along the direction perpendicular to the water outlet section 8, and the straight pipe 12 is connected with the first water outlet section through a first bending part; the other end of the straight pipe 12 is connected with a second water inlet section, the second water outlet section extends along the direction far away from the opening of the U-shaped bent pipe 11, and the straight pipe 12 is connected with the second water outlet section through a second bending part.
More specifically, the extending direction of the straight pipe 12 on the water inlet section 7 connected with the first water inlet section is the same as the extending direction of the straight pipe 12 on the water outlet section 8 connected with the first water outlet section.
The following describes the above scheme in detail.
The heat absorption plate core of the flat-plate solar collector provided by the embodiment comprises a heat exchange tube, wherein the heat exchange tube comprises a water inlet section 7, a water inlet heat absorption section 9, a U-shaped bent pipe 11, a water outlet heat absorption section 10 and a water outlet section 8 which are sequentially connected, and the water inlet heat absorption section 9 and the water outlet heat absorption section 10 are arranged in parallel in an extending mode. The U-shaped bent pipe 11 is respectively connected with the water inlet heat absorption section 9 and the water outlet heat absorption section 10. In this embodiment, the water inlet section 7 is arranged below and connected to the water inlet line, and the water suction section is arranged above and connected to the water outlet line. That is, the heat exchange tube provided in this embodiment is integrally formed, and has no welding spot in the middle. The bent portion of the U-shaped bent pipe 11 in this embodiment is a smooth arc structure.
The water inlet section 7 is of a step-shaped structure and comprises a first water inlet section and a second water inlet section. The first water inlet section is coaxially connected with the water inlet heat absorption section 9, and the first water inlet section and the second water inlet section are arranged in parallel.
The water inlet section 7 further comprises a straight pipe 12, the straight pipe 12 is connected with one end of the first water inlet section and extends along the direction perpendicular to the water inlet section 7, and the straight pipe 12 is connected with the first water inlet section through a first bending part; the other end of the straight pipe 12 is connected with a second water inlet section, the second water inlet section extends along the direction far away from the opening of the U-shaped bent pipe 11, and the straight pipe 12 is connected with the second water inlet section through a second bending part.
Similarly, the water outlet section 8 is of a step-shaped structure and comprises a first water outlet section and a second water outlet section. The first water outlet section is coaxially connected with the water outlet heat absorbing section 10, and the first water outlet section and the second water outlet section are arranged in parallel.
The water outlet section 8 further comprises a straight pipe 12, wherein the straight pipe 12 is connected with one end of the first water outlet section and extends along the direction perpendicular to the water outlet section 8, and the straight pipe 12 is connected with the first water outlet section through a first bending part; the other end of the straight pipe 12 is connected with a second water outlet section, the second water outlet section extends along the direction far away from the opening of the U-shaped bent pipe 11, and the straight pipe 12 is connected with the second water outlet section through a second bending part.
The extending direction of the straight pipe 12 on the water inlet section 7 connected with the first water inlet section and the extending direction of the straight pipe 12 on the water outlet section 8 connected with the first water outlet section can be the same or different. In this embodiment, in order to make the heat absorbing plate core more densely arranged, the material of the housing is saved, so that the extending direction of the straight pipe 12 on the water inlet section 7 after being connected with the first water inlet section is the same as the extending direction of the straight pipe 12 on the water outlet section 8 after being connected with the first water outlet section, that is, the straight pipe 12 on the water inlet section 7 is arranged in the direction away from the water outlet section 8 after being connected with the first water inlet section, and the straight pipe 12 on the water outlet section 8 is arranged in the direction away from the water outlet section 8 after being connected with the first water outlet section.
In other schemes of this embodiment, the straight pipe 12 on the water inlet section 7 is connected to the first water inlet section and then is arranged in a direction close to the water outlet section 8, and the straight pipe 12 on the water outlet section 8 is connected to the first water outlet section and then is arranged in a direction close to the water outlet section 8.
In other schemes of this embodiment, the straight pipe 12 on the water inlet section 7 is connected to the first water inlet section and then is arranged in a direction close to the water outlet section 8, and the straight pipe 12 on the water outlet section 8 is connected to the first water outlet section and then is arranged in a direction far away from the water outlet section 8.
In other schemes of this embodiment, the straight pipe 12 on the water inlet section 7 is connected to the first water inlet section 7 and then is arranged in a direction away from the water outlet section 8, and the straight pipe 12 on the water outlet section 8 is connected to the first water outlet section and then is arranged in a direction close to the water outlet section 8.
According to the technical scheme provided by the embodiment, as the heat exchange tube is of an integrally formed structure, welding spots are reduced, and the material consumption is reduced. In addition, as all the bending parts on the heat exchange tube are smooth arc structures, the internal fluid flow resistance is effectively reduced, the heat loss is also reduced, and the heat collection efficiency of the flat-plate solar collector is improved. In addition, because the fluid flows into the calandria through the water inlet holes in the header in the prior art, the header cannot realize heat collection. According to the scheme provided by the embodiment, the heat absorption area of the heat absorption plate core is increased because the structure is not provided with the header, and the heat collection efficiency of the flat-plate solar collector is further improved.
The scheme of the embodiment further comprises: the water inlet section 7 of the heat exchange tube is connected with the water inlet joint 5, and the water outlet section 8 of the heat exchange tube is connected with the water outlet joint 6;
the water inlet joint 5 and/or the water outlet joint 6 has a reducing section with an inner diameter gradually changing.
The water inlet joint 5 and/or the water outlet joint 6 comprises a first cylindrical structure 20, a second cylindrical structure 22 and a truncated cone-shaped structure 21 arranged between the first cylindrical structure 20 and the second cylindrical structure 22;
wherein the diameter of the first cylindrical structure 20 is larger than the diameter of the second cylindrical structure 22.
Also included is a plate-like structure 16, said plate-like structure 16 being arranged on the first cylindrical structure 20 perpendicular to the direction of water flow;
the plate-shaped structure 16 is provided with water passing holes which are arranged corresponding to the heat exchange tubes in number.
The second water inlet section is welded on a water passing hole on the water inlet joint 5;
the second water outlet section is welded on the water passing hole on the water outlet joint 6.
Next, the scheme of the present embodiment will be described in detail.
As shown in fig. 4, the heat absorbing plate core of the flat-plate solar collector further comprises a water inlet joint 5 and a water outlet joint 6. In this embodiment, the water inlet joint 5 and the water outlet joint 6 have the same structure, and are both threaded at one end and connected with the water inlet pipeline or the water outlet pipeline, and the other end is provided with a reducing section with gradually changing inner diameter and connected with the water inlet section 7 or the water outlet section 8.
Specifically, the water inlet joint 5 comprises a first cylindrical structure 20, a second cylindrical structure 22 and a truncated cone-shaped structure 21 arranged between the first cylindrical structure 20 and the second cylindrical structure 22; wherein the diameter of the first cylindrical structure 20 is larger than the diameter of the second cylindrical structure 22. That is, since the water inlet joint 5 is provided with the truncated cone-shaped structure 21, a variable diameter section having a gradually changing inner diameter is formed at the water inlet joint 5.
The water inlet joint 5 is provided with a circular plate-shaped structure 16 perpendicular to the water flowing direction, and specifically, the plate-shaped structure 16 is welded on the first cylindrical structure 20. The plate-like structure 16 may be provided on the outer opening surface of the first cylindrical structure 20 or may be provided internally, and is not limited in this embodiment. The plate-shaped structure 16 is provided with a water passing hole, the water inlet section 7 is welded on the water passing hole of the water inlet joint 5, and the water outlet section 8 is welded on the water passing hole of the water outlet joint 6. In this embodiment, the end of the second water inlet section passes through the water passing hole and is welded, and the end of the second water outlet section passes through the water passing hole and is welded.
According to the scheme provided by the embodiment, the water inlet section 7 is welded on the water passing hole on the water inlet joint 5, and the water outlet section 8 is welded on the water passing hole on the water outlet joint 6, so that the tightness of the heat absorption plate core of the flat-plate solar collector is ensured. The present embodiment provides the water inlet joint 5 and the water outlet joint 6 with gradually changing inner diameters, and the water inlet joint 5 is provided with the gradually-increasing reducing section along the water flow direction, so that the resistance of fluid is reduced during water inlet. The water outlet joint 6 is provided with a reducing section which gradually reduces along the water flow direction, when water is discharged, the fluid resistance becomes large, the water flow speed becomes large, and the flow performance of the fluid is improved.
Example two
The embodiment provides a heat absorbing plate core of a flat-plate solar collector.
This embodiment is a further description of the above embodiments.
The scheme of the embodiment comprises the following steps:
the heat absorption plate core of the flat-plate solar collector comprises three heat exchange tubes, namely a first heat exchange tube 13, a second heat exchange tube 14 and a third heat exchange tube 15;
the water inlet heat absorption section 9 and the water outlet heat absorption section 10 of the second heat exchange tube 14 are arranged in a space between the water inlet heat absorption section 9 and the water outlet heat absorption section 10 of the third heat exchange tube 15;
the inlet water heat absorbing section 9 and the outlet water heat absorbing section 10 of the first heat exchanging pipe 13 are arranged in the interval space between the inlet water heat absorbing section 9 and the outlet water heat absorbing section 10 of the second heat exchanging pipe 14.
Three heat exchange tubes are arranged, three water passing holes are formed in the plate-shaped structure 16, and connecting lines of the circle centers of the three water passing holes form an equilateral triangle;
wherein, two heat exchange tubes are arranged in a coplanar manner, and the other heat exchange tube is arranged in a non-coplanar manner with the other two heat exchange tubes.
Next, a scheme provided in this embodiment will be described in detail.
The heat absorbing plate core of the flat-plate solar collector in the embodiment includes three heat exchange tubes, namely a first heat exchange tube 13, a second heat exchange tube 14 and a third heat exchange tube 15. The second heat exchange tube 14 is arranged inside the third heat exchange tube 15 in a surrounding manner; the first heat exchange tube 13 is disposed around the inside of the second heat exchange tube 14. That is, the third heat exchange tube 15 is disposed at the outermost layer, the first heat exchange tube 13 is disposed at the innermost layer, and the second heat exchange tube 14 is disposed between the first heat exchange tube 13 and the third heat exchange tube 15.
As shown in fig. 3, since three heat exchange tubes are provided in the present embodiment, three water passing holes, namely, a first water passing hole 17, a second water passing hole 18 and a third water passing hole 19, are correspondingly provided on the plate-like structure 16 on the water inlet joint 5 and the water outlet joint 6. In this embodiment, three water passing holes are arranged on the circular plate-like structure 16 in a triangular distribution, and the connecting lines of the three water passing holes can form an equilateral triangle.
As a preferred embodiment of the present example, the spacing of the inlet water heat absorbing segments of each two adjacent heat exchange tubes is the same and equal to the spacing of the outlet water heat absorbing segments of each two adjacent heat exchange tubes.
That is, the distance from the third heat exchange tube water inlet and heat absorption section to the second heat exchange tube water inlet and heat absorption section is equal to the distance from the second heat exchange tube water inlet and heat absorption section to the first heat exchange tube water inlet and heat absorption section, the distance from the third heat exchange tube water outlet and heat absorption section to the second heat exchange tube water outlet and heat absorption section is equal to the distance from the second heat exchange tube water outlet and heat absorption section to the first heat exchange tube water outlet and heat absorption section, and the distance from the third heat exchange tube water inlet and heat absorption section to the second heat exchange tube water inlet and heat absorption section is equal to the distance from the third heat exchange tube water outlet and heat absorption section to the second heat exchange tube water outlet and heat absorption section.
As a more preferable implementation manner of the embodiment, the interval from the water inlet heat absorption section to the water outlet heat absorption section of the first heat exchange tube is equal to the interval from the water inlet heat absorption section to the water inlet heat absorption section of the second heat exchange tube of the third heat exchange tube.
The embodiment adopts the same constitution mode of the heat exchange pipes, ensures that internal fluid is heated uniformly, and greatly improves the heat exchange efficiency of the solar heat collector.
As shown in fig. 5, the heat absorbing plate core of the flat-type solar collector is seen in the a direction. The water inlet sections 7 of the three heat exchange tubes in the embodiment are respectively welded on the water passing holes of the plate-shaped structure 16 of the water inlet joint, and the water outlet sections are respectively welded on the water passing holes of the plate-shaped structure of the water outlet joint. Because the water passing holes in the embodiment are distributed in a triangle on the plate-shaped structure 16, the water inlet sections 7 of the third heat exchange tube 15 and the first heat exchange tube 13 are respectively welded in the two water passing holes below the plate-shaped structure 16 on the water inlet joint 5, and the water outlet sections 8 of the third heat exchange tube 15 and the first heat exchange tube 13 are respectively welded in the two water passing holes below the plate-shaped structure 16 on the water outlet joint 6. Therefore, the third heat exchange tube 15 is arranged coplanar with the first heat exchange tube 13, and the second heat exchange tube 14 is arranged non-coplanar with the third heat exchange tube 15 and the third heat exchange tube 13.
In other solutions of this embodiment, the water inlet and outlet section of each heat exchange tube may not be welded to the water hole correspondingly, which is not limited in this embodiment.
In other aspects of the present embodiment, the drainage holes on the plate-like structure 16 may also be arranged in a straight line or in other shapes, which is not limited in the present embodiment.
According to the scheme provided by the embodiment, the heat collection efficiency of the heat collection plate core is improved through the arrangement of the multi-heat exchange tubes.
Example III
The embodiment provides a flat-plate solar collector.
The flat-plate solar collector provided by the embodiment comprises the heat absorption plate core of the flat-plate solar collector.
The flat-plate solar collector provided by the embodiment consists of a heat-absorbing plate core, a shell, a transparent cover plate, a heat-insulating material and related parts, wherein the heat-absorbing plate core is the heat-collecting part of the flat-plate collector, and the heat-absorbing plate core is the most core. In the embodiment, the heat absorption plate core of the flat-plate solar collector is used, and all the bending parts on the heat exchange tubes on the heat absorption plate core are of smooth arc structures, so that the internal fluid flow resistance is effectively reduced, the heat loss is also reduced, and the heat collection efficiency of the flat-plate solar collector is improved. The use experience of the user is improved.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.
Claims (10)
1. The utility model provides a dull and stereotyped solar collector's absorber plate core which characterized in that: the heat exchange tube comprises at least one heat exchange tube, wherein the heat exchange tube comprises a water inlet section, a water inlet heat absorption section, a U-shaped bent pipe, a water outlet heat absorption section and a water outlet section which are connected in sequence, and the water inlet heat absorption section and the water outlet heat absorption section are arranged in parallel in an extending manner;
the water inlet section and the water outlet section are of step-shaped structures;
the U-shaped bent pipe, the water inlet section and the water outlet section are all of smooth arc structures.
2. The heat absorbing panel core of a flat-panel solar collector according to claim 1, wherein,
the water inlet section comprises:
the first water inlet section is coaxially connected with the water inlet heat absorption section;
the water inlet pipe comprises a first water inlet section, a second water inlet section and a straight pipe, wherein one end of the straight pipe is connected with the first water inlet section and extends along the direction perpendicular to the water inlet section, and the straight pipe is connected with the first water inlet section through a first bending part; the other end of the straight pipe is connected with a second water inlet section, the second water inlet section is arranged in an extending mode along the direction away from the opening of the U-shaped bent pipe, and the straight pipe is connected with the second water inlet section through a second bending part;
the water outlet section comprises:
the first water outlet section is coaxially connected with the water outlet heat absorption section;
the water outlet pipe comprises a first water outlet section, a first straight pipe and a second straight pipe, wherein one end of the first straight pipe is connected with the first water outlet section and extends along the direction perpendicular to the water outlet section, and the first straight pipe is connected with the first water outlet section through a first bending part; the other end of the straight pipe is connected with a second water inlet section, the second water outlet section extends along the direction away from the opening of the U-shaped bent pipe, and the straight pipe is connected with the second water outlet section through a second bending part.
3. The heat absorbing plate core of a flat-plate solar collector according to claim 2, wherein three heat exchange tubes are provided, namely a first heat exchange tube, a second heat exchange tube and a third heat exchange tube;
the water inlet heat absorption section and the water outlet heat absorption section of the second heat exchange tube are arranged in a space between the water inlet heat absorption section and the water outlet heat absorption section of the third heat exchange tube;
the water inlet heat absorption section and the water outlet heat absorption section of the first heat exchange tube are arranged in a space between the water inlet heat absorption section and the water outlet heat absorption section of the second heat exchange tube;
the water inlet heat absorption sections of every two adjacent heat exchange tubes are identical in distance and equal to the water outlet heat absorption sections of every two adjacent heat exchange tubes.
4. The heat absorbing panel core of a flat-panel solar collector according to claim 2, wherein,
the extending direction of the straight pipe on the water inlet section after being connected with the first water inlet section is the same as the extending direction of the straight pipe on the water outlet section after being connected with the first water outlet section.
5. The heat absorbing panel core of a flat-panel solar collector according to claim 2, wherein,
the water inlet section of the heat exchange tube is connected with the water inlet joint, and the water outlet section of the heat exchange tube is connected with the water outlet joint;
the water inlet joint and/or the water outlet joint is provided with a reducing section with an inner diameter gradually changing.
6. The heat absorbing panel core of a flat-panel solar collector as claimed in claim 5, wherein,
the water inlet connector and/or the water outlet connector comprises a first cylindrical structure, a second cylindrical structure and a truncated cone-shaped structure arranged between the first cylindrical structure and the second cylindrical structure;
wherein the diameter of the first cylindrical structure is greater than the diameter of the second cylindrical structure.
7. The absorber plate core of a flat panel solar collector of claim 6 further comprising a plate structure disposed on the first cylindrical structure perpendicular to the direction of water flow;
the plate-shaped structure is provided with water passing holes which are arranged corresponding to the heat exchange tubes in number.
8. The absorber plate core of a flat panel solar collector of claim 7 wherein said second water inlet section is welded to a water passing hole on said water inlet connector;
the second water outlet section is welded on the water passing hole on the water outlet joint.
9. The heat absorbing plate core of the flat-plate solar collector according to claim 8, wherein three heat exchange tubes are arranged, three water passing holes are arranged on the plate-shaped structure, and connecting lines of the circle centers of the three water passing holes form an equilateral triangle;
wherein, two heat exchange tubes are arranged in a coplanar manner, and the other heat exchange tube is arranged in a non-coplanar manner with the other two heat exchange tubes.
10. A flat-panel solar collector comprising a heat absorbing panel core according to any one of the preceding claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320273239.0U CN220038789U (en) | 2023-02-20 | 2023-02-20 | Flat-plate solar heat collector and heat-absorbing plate core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320273239.0U CN220038789U (en) | 2023-02-20 | 2023-02-20 | Flat-plate solar heat collector and heat-absorbing plate core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220038789U true CN220038789U (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320273239.0U Active CN220038789U (en) | 2023-02-20 | 2023-02-20 | Flat-plate solar heat collector and heat-absorbing plate core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220038789U (en) |
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2023
- 2023-02-20 CN CN202320273239.0U patent/CN220038789U/en active Active
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