JPH0124468Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) This invention relates to flat plate type, vacuum glass tube type, etc. solar heat collectors, and in particular the interconnection structure of heat collectors when multiple solar heat collectors are installed in parallel. It is related to.

(Prior Art) Conventionally, as shown in FIG. 1, as shown in FIG. 3, the connecting pipes 2, 2 are connected to each other, and both ends of the rubber hose 3 are fastened to the connecting pipes 2, 2 using tightening fittings 4, 4. However, in this structure, solar heat collection is not possible. It is necessary to tighten the clamp 4 using a tool such as a screwdriver in the limited narrow connection space between the heaters 1 and 1, which results in poor workability and also makes it difficult to tighten the clamp 4. This tends to cause excess or deficiency in the amount of water, which may lead to deformation of the connecting pipe 2, leakage of the heat medium, etc.

In addition, there is a conventional connection method using a union joint, but even this method requires tightening work using a tool such as a spanner, and has the same drawbacks as the connection structure shown in Figure 1. I was getting used to it.

(Purpose) This proposal was made in view of the above points, and it eliminates the drawbacks of the conventional method by making it possible to connect the connecting pipes of adjacent solar heat collectors to each other without using tools such as screwdrivers and spanners. It was calculated.

(Means for solving the problem) As shown in FIGS. 2 and 3, a plurality of solar heat collectors 1 with connecting pipes 2 protruding are installed in parallel, and the connecting pipes of adjacent solar heat collectors 1 are installed in parallel. The mutually fitting sleeve 5
Connect with.

The outer periphery of the end of each connecting pipe 2 or the joint sleeve 5
An O-ring 7 is held on one of the inner peripheries of both ends. The joint sleeve 5 is press-fitted onto the outer periphery of the end of the connecting pipe 2 via the O-ring 7 in an airtight manner. Movement regulating fittings 8 for regulating the movement of the joint sleeve 5 in the axial direction are elastically fitted onto the outer peripheries of the connecting pipes 2, 2 located on both sides of the joint sleeve 5. In addition, in FIG. 3, the movement regulating fittings 8,
8 is omitted from illustration.

(Function) The above O-rings 7, 7 are attached to the outer periphery of the ends of the connecting pipes 2, 2.
By press-fitting the joint sleeve 5 in an airtight state through the connector, the connecting pipes 2, 2 of the adjacent solar heat collectors 1, 1 can be connected. By elastically fitting the movement restricting fittings 8, 8 to the outer periphery of the connecting pipe located on both sides of the joint sleeve 5, the movement of the joint sleeve in the axial direction is restricted, and the joint sleeve 5 does not come off.

(Embodiment) The embodiment of the present invention shown in FIGS. 2 and 3 will be described in detail below.

First, in the embodiment shown in FIG. 2, 1 is a solar heat collector, 2 is a connecting pipe protruding from the side of the heat collector 1,
5 is a cylindrical joint sleeve with grooves 6 on the inner periphery of both ends.
form. Reference numeral 7 denotes an O-ring made of an elastic material such as silicone or fluorocarbon rubber, which has excellent heat resistance and durability, and is fitted and held in the groove 6 of the coupling sleeve 5, and its inner diameter is set slightly smaller than the outer diameter of the connecting pipe 2. do. The coupling sleeve 5 is press-fitted onto the outer periphery of the end of the connecting tube 2 via the O-ring 7 in an airtight manner, thereby connecting the connecting tubes 2 to each other. According to experiments, when the amount of deformation of the O-ring 7 was kept within the elastic recovery range of 5 to 30%, it was possible to obtain an airtight pressure from a low vacuum to a high pressure of about 200 kg/ ^cm2 using the O-ring 7 alone. . In this way, by utilizing the elasticity and airtightness of the O-ring 7, it is possible to provide a connection structure that can withstand actual use. 8
is a movement regulating fitting formed from an elastic metal plate, which is placed between the side surface of the solar heat collector 1 and the joint sleeve 5 and is elastically fitted to the outer periphery of the connecting pipe 2 to restrict the movement of the joint sleeve 5. to prevent accidental falling off.

As described above, in this embodiment, the joint sleeve 5 is press-fitted to the outer periphery of the end of the connecting pipe 2 of the adjacent solar heat collector 1 via the O-ring 7 in an airtight manner to prevent movement. A reliable connection can be achieved by fitting the metal fitting 8 onto the outer periphery of the connecting tube 2, and no tools such as a screwdriver are required for this operation. Furthermore, since there are no fastening parts, the conventional drawbacks caused by over-fastening or under-fastening are also eliminated.

FIG. 3 shows another embodiment of the present invention, which has a structure suitable for cases where the thickness of the connecting pipe 2 is easily deformed. That is, the ring 9 is fixed to the outer periphery of the end of the connecting pipe 2, and the O-ring 7 is fitted and held by this ring 9. This prevents deformation of the connecting pipe 2. In this embodiment as well, a movement regulating fitting (similar to the movement regulating fitting 8 shown in FIG. 2) for regulating the movement of the joint sleeve 5 in the axial direction is used.
It is elastically fitted to the outer periphery of the connecting pipes 2, 2 located on both sides of the joint sleeve 5, as in the case of FIG. 2, but the movement restricting fittings are not shown.

(Effects) As described above, with the connection structure of the present invention, connecting pipes can be connected to each other without using tools, and the connection is reliable, without the risk of falling off due to vibration, etc. This is a very practical product that can eliminate the drawbacks.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing a conventional connection structure, FIG. 2 is an explanatory cross-sectional view showing an embodiment of the proposed connection structure, and FIG. 3 is a sectional view of main parts showing another embodiment. 1: Solar heat collector, 2: Connecting pipe, 3: Joint sleeve, 7: O-ring, 8: Movement regulating fitting.

Claims (1)

[Claims for Utility Model Registration] In a device in which a plurality of solar heat collectors with protruding connecting pipes are installed in parallel and the connecting pipes of adjacent solar heat collectors are connected to each other, the outer periphery of the end of each connecting pipe or the joint An O-ring is held on one of the inner peripheries of both ends of the sleeve, and the coupling sleeve is press-fitted to the outer periphery of the end of the connecting pipe in an airtight manner via the O-ring to prevent axial movement of the coupling sleeve. A connection structure for a solar heat collector, characterized in that movement regulating fittings are elastically fitted to the outer periphery of the connecting pipe located on both sides of the joint sleeve.