Anti-condensation fixing seat, photovoltaic supporting device and photovoltaic roof
By using an anti-condensation mounting bracket design, thermal insulation materials and waterproof membrane sheets are employed to block the transfer of cold energy, thus solving the condensation problem caused by the cold bridge effect of the photovoltaic bracket and ensuring the stability and waterproofness of the photovoltaic system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional photovoltaic brackets are prone to cold bridging in low-temperature environments, which can lead to condensation corrosion of fasteners, ice expansion damage to the structure in winter, and condensation may also wet items inside the house.
The anti-condensation mounting bracket uses a thermal insulation material connecting base to separate the central stud and mounting screw, blocking the transfer of cold air. Combined with a waterproof membrane sheet, it improves the sealing performance and prevents condensation.
It effectively blocks the cold bridge effect, prevents condensation formation, protects the building roof structure, prevents condensation from entering the house, and improves connection stability and sealing.
Smart Images
Figure CN224083450U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic power generation equipment technology, and in particular to an anti-condensation mounting base, a photovoltaic support device, and a photovoltaic roof. Background Technology
[0002] Traditional photovoltaic (PV) mounting systems are prone to thermal bridging in low-temperature environments, leading to condensation at the contact points between the mounting screws and the roof. While existing rubber gaskets can mitigate water seepage, they cannot block cold transfer, resulting in the following problems with long-term use: 1) condensation corrodes fasteners; 2) winter freezing and expansion cause structural damage; 3) condensation travels along the fasteners through the roof into the building, wetting interior items. Utility Model Content
[0003] To address the aforementioned problems, firstly, this utility model provides an anti-condensation fixing base, mainly comprising: a connecting base having a first end and a second end axially opposite to each other.
[0004] The connecting base has an axially opened central through hole, and a central stud is embedded in the central through hole. The threaded end of the central stud extends axially to the outside of the first end.
[0005] The connecting base has a number of axially opened mounting through holes, which are spaced apart around the central through hole. The mounting through holes are threaded with mounting screws, and the threaded end of the mounting screw extends axially to the outside of the second end for connecting to the building roof.
[0006] Preferably, the mounting through holes are evenly distributed on a circle with the central axis of the central through hole as the center, and the minimum distance D1 between the mounting through holes and the central through hole is not less than 0.5 mm.
[0007] Preferably, the first end of the connecting base has a plurality of recessed steps, each of which corresponds to and communicates with a mounting through hole, and the recessed steps are used to accommodate the head of the mounting screw.
[0008] Preferably, the connecting base has a plurality of grooves on one axial end face and a plurality of protrusions on the other end face. The protrusions can be engaged into the grooves of another connecting base to achieve splicing of multiple connecting bases.
[0009] Preferably, a gasket is provided at the bottom of the second end of the connecting base, and a plurality of through holes are correspondingly opened on the gasket. The lower end of the mounting screw passes through the through holes and is connected to the building roof.
[0010] Preferably, the connecting substrate is made of a thermal insulation material.
[0011] Secondly, this utility model also provides a photovoltaic support device, specifically including a support body, a waterproof membrane sheet, and an anti-condensation fixing base as described above. The support body is threadedly connected to the threaded end of the central stud, and the waterproof membrane sheet is confined between the support body and the connecting base. The support body is used to install a photovoltaic system.
[0012] Preferably, the area of the waterproof membrane sheet is larger than the end face area of the first end of the connecting substrate, and the outer edge of the waterproof membrane sheet extends to the outside of the connecting substrate it protects.
[0013] Thirdly, this utility model also provides a photovoltaic roof, which includes a building roof, a photovoltaic system and the aforementioned photovoltaic support device. The anti-condensation fixing base of the photovoltaic support device is installed on the building roof, and the photovoltaic system is installed on the support body of the photovoltaic support device.
[0014] Preferably, the building roof includes a waterproof layer, an insulation layer, a vapor barrier layer, and an inner roof panel stacked in sequence. The connecting base of the anti-condensation fixing seat passes through the waterproof layer and is embedded in the insulation layer. The threaded end of the mounting screw is connected to the inner roof panel. The waterproof membrane sheet is sealed to the waterproof layer.
[0015] The beneficial effects of this utility model are as follows: by separating the central stud and the mounting stud through the connecting base, the central stud is used to connect to the supporting body of the external photovoltaic system, and the mounting stud is used to install to the building roof. The thermal insulation effect of the connecting base effectively reduces or even blocks the temperature conduction between the air outside the building roof and the mounting stud, blocks the transfer of cold energy, and prevents the mounting stud from generating condensation, thereby protecting the items of users inside the building. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of an anti-condensation mounting base in a preferred embodiment;
[0017] Figure 2 This is a cross-sectional structural diagram of the anti-condensation mounting base in a preferred embodiment;
[0018] Figure 3 This is a three-dimensional structural diagram of the connecting substrate in a preferred embodiment;
[0019] Figure 4 This is a schematic cross-sectional view of a photovoltaic roof in a preferred embodiment;
[0020] Figure label:
[0021] 100. Anti-condensation mounting bracket; 110. Connecting base; 111. First end; 112. Second end; 113. Central through hole; 114. Mounting through hole; 115. Recessed step; 116. Groove; 117. Protrusion; 120. Central stud; 130. Mounting screw; 140. Washer;
[0022] 200. Photovoltaic support device; 210. Support body; 220. Waterproof membrane sheet;
[0023] 300. Photovoltaic roof; 310. Building roof; 311. Waterproof layer; 312. Thermal insulation layer; 313. Vapor barrier layer; 314. Inner roof panel. Detailed Implementation
[0024] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.
[0025] like Figure 1-2 As shown, this utility model proposes an anti-condensation fixing base 100, which mainly includes a connecting base 110. The connecting base 110 has a first end 111 and a second end 112 that are axially opposite. The center of the connecting base 110 has a central through hole 113 that is axially opened. A central stud 120 is embedded in the central through hole 113. The threaded end of the central stud 120 extends axially to the outside of the first end 111. The connecting base 110 has a plurality of mounting through holes 114 that are axially opened. The mounting through holes 114 are spaced apart around the central through hole 113. Mounting screws 130 are threaded in the mounting through holes 114. The threaded end of the mounting screws 130 extends axially to the outside of the second end 112 for connecting to the building roof. The center stud 120 and the mounting screw 130 are separated by the connecting base 110 and do not contact each other. The connecting base is made of thermal insulation material, which can ensure that the cold energy of the outdoor low temperature can only be conducted to the center stud 120 and blocked by the connecting base 110. The cold energy cannot be transferred to the mounting screw 130, thus preventing the cold bridge phenomenon and avoiding the generation of condensation on the mounting screw 130.
[0026] like Figure 1-3 As shown, in an exemplary embodiment, the mounting through holes 114 are evenly distributed on a circle centered on the central axis of the central through hole 113. The mounting through holes 114 are arranged radially with equal angles relative to the central through hole 113, ensuring that the mounting screws 130 within the mounting through holes 114 are only subjected to pull-out force from the roof surface. This improves the connection stability between the fixing base and the building roof, ensuring a uniform distribution of pull-out force on the connecting base 110. In one specific embodiment, four sets of mounting through holes 114 are evenly spaced, corresponding to four sets of mounting screws 130 connected to the building roof, effectively improving the connection strength and stability between the connecting base 110 and the building roof.
[0027] like Figure 1-3 As shown, specifically, the minimum distance between the mounting through hole 114 and the central through hole 113 is not less than 0.5mm, ensuring that the thickness of the connecting base 110 at the outer edge of the mounting through hole 114 has a thermal insulation effect, thus preventing the mounting screw 130 inside the mounting through hole 114 from being subjected to cold energy transfer. In a specific embodiment, the connecting base can be made of non-metallic materials such as POM or PP, which can achieve thermal insulation and prevent condensation, and can also withstand certain high-temperature environments, meeting the requirements for outdoor roof use. No specific limitations are made here.
[0028] like Figure 1-2 As shown, the first end 111 of the connecting base 110 has several recessed steps 115, which are connected to the mounting through holes 114 in a one-to-one manner. The recessed steps 115 are used to accommodate the heads of the mounting screws 130, so that the heads of the mounting screws 130 are placed inside the connecting base 110, preventing the heads of the mounting screws 130 from contacting external cold air and generating condensation. Preferably, the recessed height of the recessed steps 115 is not less than 5mm, to ensure that the heads of the mounting screws 130 can be completely embedded in the connecting base 110, further reducing the transfer of external temperature from the building roof.
[0029] like Figure 1-2 As shown, a washer 140 is provided at the bottom of the second end 112 of the connecting base 110. Several through holes are correspondingly opened on the washer 140. The lower end of the mounting screw 130 passes through the through holes and is connected to the building roof. By setting the washer 140, an elastic preload can be provided to effectively resist the loosening caused by vibration or dynamic load on the screw, counteract the tendency of the mounting screw 130 to retract, and improve the connection strength and connection stability between the fixing seat and the building roof.
[0030] like Figure 1-3 As shown, preferably, a plurality of grooves 116 are formed on one axial end face of the connecting base 110, and a plurality of protrusions 117 are fitted on the other end face, the shape and size of the protrusions 117 matching the grooves 116. The protrusions 117 on the end face of one connecting base can be correspondingly engaged into the grooves 116 of another connecting base to achieve the splicing of the two connecting bases. In practical applications, multiple connecting bases 110 can be assembled as needed (e.g., Figure 1 As shown, the two connecting bases 110 are in a plug-in assembly state. The overall height of the connecting bases can be flexibly adjusted, which is highly flexible and convenient for disassembly and assembly. In this specific embodiment, the groove 116 is formed on the end face of the first end 111 of the connecting base 110, and the protrusion 117 is provided on the end face of the second end 112 of the connecting base 110.
[0031] like Figure 1-4As shown, according to another aspect of this application, a roof photovoltaic support device 200 is provided, including a support body 210, a waterproof membrane sheet 220, and the aforementioned anti-condensation fixing base 100. The support body 210 is threadedly connected to the threaded end of a central stud 120. The support body 210 is used to install a photovoltaic system. The waterproof membrane sheet 220 is confined between the support body 210 and the connecting base 110, and is used to waterproof the connection between the anti-condensation fixing base 100 and the roof. Preferably, the area of the waterproof membrane sheet 220 is larger than the end face area of the first end of the connecting base 110, and the outer edge of the waterproof membrane sheet 220 extends to the outside of the connecting base 110, so that the waterproof membrane sheet 220 covers the upper end face of the connecting base 110 and the connection between the connecting base 110 and the building roof, preventing rainwater from seeping through the connection and the through holes of the connecting base 110, effectively improving the sealing performance.
[0032] Specifically, the support body 210 includes a first connector and a second connector. The upper part of the first connector has a first connecting hole, and the lower part of the first connector has a second connecting hole. The upper part of the second connector is fitted into the second connecting hole and fixedly connected to the inner wall of the second connecting hole. The lower part of the second connector has a third connecting hole, and the inner wall of the third connecting hole has vertically extending threads for mating with the threaded end of the central stud. A waterproof membrane sheet is fitted onto the second connector. The bottom of the first connector is sealed to the upper surface of the waterproof membrane sheet, and the lower surface of the waterproof membrane sheet is sealed to the waterproof layer of the building roof, thus achieving a waterproof sealing function. Preferably, in a specific embodiment, the first connector can be a hexagonal nut, and the second connector can be a bolt, etc., without specific description.
[0033] like Figure 4 As shown, another embodiment of the present invention provides a photovoltaic roof 300, which includes a building roof 310, a photovoltaic system (not shown) and a photovoltaic support device 200 as described above. The anti-condensation fixing base 100 of the photovoltaic support device 200 is installed on the building roof 310, and the photovoltaic system is installed on the support body 210 of the photovoltaic support device 200.
[0034] like Figure 1-4As shown, the aforementioned building roof 310 includes a waterproof layer 311, an insulation layer 312, a vapor barrier layer 313, and an inner roof panel 314, which are stacked sequentially. Specifically, the anti-condensation mounting bracket 100 passes through the waterproof layer 311 and is embedded in the insulation layer 312, better preventing temperature conduction between the air outside the building roof 310 and the air inside the building roof 310, further preventing condensation. The threaded end of the mounting screw 130 is fixedly connected to the inner roof panel 314, enhancing the connection strength between the photovoltaic support device 200 and the building roof 310. The support body 210 is located above the building roof 310, and the lower end face of the waterproof membrane 220 is sealed to the upper end face of the waterproof layer 311, which can effectively improve the sealing performance between the waterproof membrane 220 and the roof waterproof layer 311, preventing rainwater from entering the building from the connection between the two. Preferably, in a specific embodiment, the inner roof panel 314 can be a color steel tile structure.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An anti-condensation mount, comprising: The utility model relates to a kind of photovoltaic support devices, including support body (210), waterproof roll piece (220) and the anti-condensation fixing seat of any one of claims 1 to 6, the support body (210) is threadedly connected with the threaded end of the center stud (120), the support body (210) is used to install photovoltaic system, the waterproof roll piece (220) is limited between the support body (210) and the connecting base body (110).
2. The anti-condensation fixing seat according to claim 1, wherein: The installation through holes (114) are equidistantly distributed on a circle with the center axis of the center through hole (113) as the center, and the minimum distance D1 between the installation through holes (114) and the center through hole (113) is not less than 0.5 mm.
3. The anti-condensation fixing seat according to claim 1, wherein: The first end of the connecting base body (110) has a plurality of sunken steps (115) corresponding to the installation through holes (114), and the sunken steps (115) are used for supporting the head of the installation screw (130).
4. The anti-condensation fixing seat according to claim 1, wherein: The connecting base body (110) has a plurality of grooves (116) on one axial end surface and a plurality of protrusions (117) corresponding to the other end surface, the protrusions (117) can be correspondingly clamped into the grooves (116) of the other connecting base body (110) to realize splicing of a plurality of connecting base bodies (110).
5. The anti-condensation fixing seat according to claim 1, wherein: The second end of the connecting base body (110) is provided with a gasket (140), the gasket (140) has a plurality of through holes corresponding thereto, and the lower end of the installation screw (130) passes through the through holes and is connected to the building roof.
6. The anti-condensation fixing seat according to claim 1, wherein: The connecting base body (110) is made of temperature insulation material.
8. The photovoltaic support device according to claim 7, wherein: 7. A photovoltaic support apparatus, characterized by, The waterproofing sheet (220) has an area greater than an end surface area of the first end of the connecting base (110), and an outer edge of the waterproofing sheet (220) extends to an outer side of the connecting base (110).
9. A photovoltaic roof, characterized in that The photovoltaic support device is installed on the building roof (310), and the photovoltaic system is installed on the support body (210) of the photovoltaic support device.
10. The photovoltaic roofing according to claim 9, wherein, The building roof (310) comprises a waterproof layer (311), an insulation layer (312), an air barrier layer (313) and a roof inner panel (314) which are sequentially stacked, the connecting base (110) of the anti-condensation fixing seat penetrates through the waterproof layer (311) and is embedded in the insulation layer (312), the threaded end of the mounting screw (130) is connected to the roof inner panel (314), and the waterproofing sheet (220) is sealingly connected with the waterproof layer (311).