Vacuum tube heat-keeping heat collection header of solar energy heat collection system
The combination structure of inner ring, sleeve, outer ring and dustproof ring solves the leakage problem at the connection between the heat collection tube and the box, and realizes stable sealing and efficient operation of the heat collection manifold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 胡淑静
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-19
AI Technical Summary
In solar collector manifold systems, mechanical vibration and water flow disturbance can cause the collector tubes to shift at the connection point with the manifold, creating leaks that affect water temperature and operating efficiency.
The gasket structure, consisting of an inner ring, a sleeve, and an outer ring, combined with a pressure plate and a dustproof ring, is fixed with bolts to ensure a tight connection between the heat collection tube and the housing. Silicone rubber gaskets and dustproof rings are used to improve sealing and stability.
It effectively prevents leaks, keeps heat from escaping, ensures hot water supply, and improves the working efficiency and service life of the heat collection manifold.
Smart Images

Figure CN224381797U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of solar heating technology, and in particular relates to a vacuum tube heat-locking heat collection manifold for a solar thermal collector system. Background Technology
[0002] Solar heating primarily relies on solar collectors to convert solar energy into heat energy, thereby heating water from a low temperature to a high temperature. In a solar collector manifold system, one end of the collector tube is inserted into the manifold housing, and a dust seal is installed at the connection between the collector tube and the housing. During prolonged use, mechanical vibration and water flow disturbance can cause the collector tube and the dust seal to shift, resulting in gaps at the connection between the collector tube and the housing, creating multiple leaks. This reduces the water temperature in the tank and the efficiency of the collector manifold, ultimately decreasing the supply of hot water. Utility Model Content
[0003] To address the above problems, this utility model provides a vacuum tube heat-locking heat collection manifold for a solar thermal collector system.
[0004] This utility model is implemented as follows: A vacuum tube heat-locking collector manifold for a solar thermal collector system includes a housing. Multiple first through holes are symmetrically and evenly distributed at the center of both sides of the housing. Collector tubes are arranged on both sides of the housing, with one end of each collector tube inserted into a first through hole. Water flows between the housing and the collector tubes. A gasket is fitted onto the side wall of the housing located at each first through hole to ensure a tight and reliable connection between the collector tube and the housing. The gasket consists of an inner ring, a sleeve, and an outer ring. The inner and outer rings are symmetrically fixed to the outer walls at both ends of the sleeve. The inner and outer rings are attached to the side wall of the housing to ensure a tight and reliable connection and prevent positional displacement of the inner and outer rings. The outer diameter of the sleeve is the same as the diameter of the first through hole, and the inner diameter of the sleeve is 1mm to 3mm smaller than the diameter of the collector tube, ensuring that the collector tube passes through the sleeve and is tightly and reliably connected to it, serving a limiting and sealing function.
[0005] The two sides of the housing are symmetrically fixed with pressure plates, which are tightly pressed against the outer ring to compress and limit the outer ring, ensuring the stable and reliable position of the gasket and preventing it from moving. Multiple second through holes are evenly distributed on the pressure plates, corresponding to the positions of the first through holes and having the same diameter, facilitating the passage of the heat collection tube. A dustproof ring is tightly fitted onto the side wall of the pressure plate at the second through hole. The inner diameter of the dustproof ring is 1mm to 3mm smaller than the diameter of the heat collection tube, ensuring that the heat collection tube passes through the dustproof ring and is tightly and reliably connected to it, providing a seal and preventing dust and other impurities from entering the housing. The gasket and dustproof ring are made of silicone rubber, which has advantages such as high temperature resistance, aging resistance, corrosion resistance, and good elasticity, resulting in a long service life. One end of the heat collection tube passes through the center hole of the dustproof ring and the ring sleeve and is located inside the housing.
[0006] Preferably, the pressure plate is provided with a plurality of first threaded holes evenly spaced, and the side wall of the housing is provided with a plurality of second threaded holes evenly spaced. The first threaded holes and the second threaded holes are positioned correspondingly and have the same diameter. Bolts are provided through the first threaded holes and the second threaded holes to ensure a reliable connection between the pressure plate and the housing, while also facilitating disassembly and assembly.
[0007] Preferably, the distance between the inner ring and the outer ring is the same as the thickness of the side wall of the housing, ensuring a tight connection between the inner ring and the outer ring and the side wall of the housing.
[0008] The beneficial effects of this utility model are: the heat collection tube and the ring are tightly and reliably connected together, the ring plays a role in limiting and sealing the heat collection tube, and the pressure plates fixed on both sides of the box body are tightly pressed against the outer ring to squeeze and limit the outer ring, ensuring the stability and reliability of the gasket position. When the heat collection tube moves, the gasket will not move, so there will be no leakage between the heat collection tube and the box body, and no heat loss from the box body will be caused, thus ensuring the working efficiency of the heat collection manifold and ensuring the supply of hot water. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the connection structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the external structure of this utility model;
[0011] Figure 3 This is a schematic diagram of the washer structure;
[0012] Figure 4 This is a schematic diagram of the structure on the outside of the box;
[0013] Figure 5 This is a schematic diagram of the dustproof ring structure;
[0014] In the diagram: 1. Housing; 2. First through hole; 3. Heat collector tube; 4. Washer; 5. Inner ring; 6. Ring; 7. Outer ring; 8. Pressure plate; 9. Second through hole; 10. Dustproof ring; 11. Bolt. Detailed Implementation
[0015] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.
[0016] like Figure 1-5The diagram shows a vacuum tube heat-locking collector manifold for a solar thermal collector system, comprising a housing 1. Multiple first through holes 2 are symmetrically and evenly distributed at the center of both sides of the housing 1. Collector tubes 3 are arranged on both sides of the housing 1, with one end of each collector tube 3 inserted into a first through hole 2. Water flows between the housing 1 and the collector tubes 3. Gaskets 4 are fitted onto the sidewalls of the housing 1 located at the first through holes 2 to ensure a tight and reliable connection between the collector tubes 3 and the housing 1. Each gasket 4 consists of an inner ring 5, a sleeve 6, and an outer ring 7. The inner ring 5 and outer ring 7 are symmetrically fixed to the outer walls at both ends of the sleeve 6. The distance between the inner ring 5 and outer ring 7 is the same as the thickness of the sidewall of the housing 1, ensuring a tight connection between the inner ring 5 and outer ring 7 and the sidewall of the housing 1. The inner ring 5 and outer ring 7 are attached to the side wall of the housing 1 to ensure a tight and reliable connection and prevent positional displacement of the inner ring 5 and outer ring 7. The outer diameter of the ring 6 is the same as the diameter of the first through hole 2, and the inner diameter of the ring 6 is 2mm smaller than the diameter of the heat collection tube 3 to ensure that the heat collection tube 3 passes through the ring 6 and is tightly and reliably connected to the ring 6, thus serving as a limit and seal.
[0017] The two sides of the housing 1 are symmetrically fixed with pressure plates 8. The pressure plates 8 are tightly pressed against the outer ring 7 to compress and limit the outer ring 7, ensuring the stable and reliable position of the gasket 4 and preventing it from moving. Multiple second through holes 9 are evenly opened on the pressure plates 8. The second through holes 9 are corresponding to the positions of the first through holes 2 and have the same diameter, which facilitates the passage of the heat collection tube 3. A dustproof ring 10 is tightly fitted on the side wall of the pressure plate 8 located at the second through hole 9. The inner diameter of the dustproof ring 10 is 2mm smaller than the diameter of the heat collection tube 3, ensuring that the heat collection tube 3 passes through the dustproof ring 10 and is tightly and reliably connected to the dustproof ring 10, which plays a sealing role and prevents dust and other impurities from entering the housing 1. The gasket 4 and the dustproof ring 10 are made of silicone rubber, which has the advantages of high temperature resistance, aging resistance, corrosion resistance and good elasticity, and has a long service life. One end of the heat collection tube 3 passes through the center hole of the dustproof ring 10 and the ring 6 in sequence and is located inside the housing 1.
[0018] The pressure plate 8 is provided with a plurality of first threaded holes evenly spaced, and the box body 1 is provided with a plurality of second threaded holes evenly spaced on its side wall. The first threaded holes and the second threaded holes are positioned correspondingly and have the same diameter. Bolts 11 are provided through the first threaded holes and the second threaded holes to ensure a reliable connection between the pressure plate 8 and the box body 1, and to facilitate disassembly and assembly.
[0019] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A vacuum tube heat-locking collector manifold for a solar thermal collector system, comprising a housing, wherein a plurality of first through holes are uniformly and symmetrically opened at the middle positions of both sides of the housing, and collector tubes are arranged on both sides of the housing, with one end of each collector tube inserted into a first through hole, characterized in that, A gasket is fitted onto the side wall of the housing located at the first through hole. The gasket consists of an inner ring, a sleeve, and an outer ring. The inner and outer rings are symmetrically fixed to the outer walls at both ends of the sleeve and are attached to the side wall of the housing. The outer diameter of the sleeve is the same as the diameter of the first through hole, and the inner diameter of the sleeve is 1mm to 3mm smaller than the diameter of the heat collection tube. The two sides of the housing are symmetrically fixed with pressure plates, which are tightly abutted against the outer ring. Multiple second through holes are evenly opened on the pressure plates. The second through holes are corresponding to the first through holes and have the same diameter. A dustproof ring is tightly fitted on the side wall of the pressure plate at the second through hole. The inner diameter of the dustproof ring is 1mm to 3mm smaller than the diameter of the heat collection tube. The gasket and the dustproof ring are made of silicone rubber. One end of the heat collection tube passes through the center hole of the dustproof ring and the ring in sequence and is located inside the housing.
2. The vacuum tube heat-locking collector manifold for a solar thermal collector system according to claim 1, characterized in that, The pressure plate is provided with a plurality of first threaded holes evenly spaced, and the side wall of the housing is provided with a plurality of second threaded holes evenly spaced. The first threaded holes and the second threaded holes are positioned correspondingly and have the same diameter. Bolts are provided through the first threaded holes and the second threaded holes.
3. The vacuum tube heat-locking collector manifold for a solar thermal collector system according to claim 1, characterized in that, The distance between the inner and outer rings is the same as the thickness of the side wall of the housing.