JPH0241508Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field used] This invention is for supporting a meandering pipe used for heat exchange, and mainly relates to a spacer for supporting a seamless, continuous meandering pipe.

[Prior art and problems]

In a conventional meandering tube, both ends of a straight thin tube 1 are inserted into holes drilled in a thick end plate 2 for a spacer, and each thin tube in these holes is expanded to form an inner surface of each hole. A water chamber type in which each capillary tube is brought into close contact with each other, each capillary tube and end plate are brazed 4, and a water chamber 5 is provided on the outside of each end plate (see Fig. 5), or a small tube with a large number of capillary tubes. A U-shaped tube connection method (see Fig. 6) is known in which the tubes are passed through a spacer 6 in which thin tube support holes are drilled in advance at a predetermined pitch, and then adjacent thin tubes are successively connected with a U-shaped tube 7. There is.

However, the above-mentioned method using the end plate 2 that supports each thin tube at a predetermined pitch or the perforated spacer 6 requires assembly at the time of manufacturing the heat exchanger, which is troublesome and has poor assembly efficiency. These require thick parts, are heavy, and are expensive.

Moreover, these known methods cannot be used at all for meandering tubes which are formed in advance by meandering a single continuous thin tube. Particularly in recent years, the above-mentioned method cannot be adopted in products that use thin tubes that are difficult to weld or expand in diameter.

[Problems to be solved]

This device is a support spacer for setting each straight section of a preformed meandering tube for heat exchange at predetermined intervals in which a series of meandering thin tubes are arranged. The purpose is to provide the market with something that supports a predetermined shape.

[Means for solving problems]

This device consists of two members, an L-shaped cross-section member made of an electrical insulating material and a plate-shaped member, which are of approximately equal length to each other, and one side portion of the L-shaped cross-section member is arranged in the length direction. A large number of meandering pipe support slits are provided at a predetermined pitch in the perpendicular direction from one edge to form a comb-teeth shape, and the tip of each comb-teeth is formed with a hooking part having the same shape on the side. Further, the plate-shaped material is provided with a hooking portion having an equal cross-sectional shape over its entire length, which can be removably engaged with each hooking portion of the tip of each comb tooth of the L-shaped cross-section material. The problem was solved by creating a special meandering tube support spacer for heat exchange.

[Effect]

In order to use the spacer of this invention, an L-shaped cross-section member of the invention is placed at the end of each parallel part of a heat exchange tube made of a meandering pipe, and is positioned perpendicularly to the parallel part, and is placed in each slit. The parallel parts of the meandering pipe are fitted one by one, and the engaging parts of a single plate-shaped material are slid from the end faces of both parts into the respective engaging parts of the comb teeth protruding from each parallel part, and all The single engaging portion of the plate-shaped member is engaged with the engaging portion of the comb teeth to complete the assembly.

When disassembling, reverse the above procedure.

In the assembled state, both members may be fixed by suitable fixing means, such as screws or adhesive.

〔effect〕

As mentioned above, since this device is configured and functions, even if it is pre-formed on the meandering tube for heat exchange, it can be easily attached and removed later as a spacer, and its operation can be done by simply attaching both sections to the same structure. It is only necessary to slide them together in the length direction, and after assembly, the engaging parts of both shapes engage, and each shape does not separate in the direction perpendicular to the length, and each parallel part of the meandering heat exchange tube has an L-shaped cross section. It is located between each comb tooth of the shaped material, and between the other side of the L-shaped shaped material in cross section and the plate shaped material, and each parallel part is supported at a predetermined pitch. By arranging the adjacent spacers so that they are in contact with each other so that the planes containing the exchange tubes are parallel to each other, this spacer can also maintain the distance between these units (second (see figure). In this case, as is known, the ends of each meandering heat exchange tube are connected to a common supply header 41 or discharge header 42, respectively.

Further, when a unit using the spacer of this invention is assembled to form one heat exchanger, it can be formed by supporting the spacer along the machine frame 40, as in the conventional example.

In addition, each of the shapes that make up the spacer of this invention is made of electrically insulating materials such as synthetic resin and ceramics, so even if iron, titanium, aluminum, copper, etc. are used as heat exchange tubes, the parts that come in contact with these materials There is no risk of electrical corrosion occurring in these.

[Embodiment]

In order to facilitate understanding of this invention, a description will now be given based on a representative embodiment shown in the drawings.

In the figure, 10 is an L-shaped cross-section, and 20 is a plate-shaped material, both of which are made of polyvinyl chloride molded products. L-shaped cross-section material 1
0, one side piece 11 is provided with a large number of meandering pipe support slits 13 at a predetermined pitch P from one edge in the length direction in the direction of the ridge line 12 at right angles to the length direction of the shape material 10. The distal end of each comb tooth 14, which is formed into a tooth shape, is formed with a thick engaging portion 15 (see Fig. 1) on the upper and lower sides, and the side shape and size of the engaging portion 15 of each comb tooth are as follows. It is a congruent shape. The other side portion 16 of the L-shaped cross-section member 10 has no slit and is simply plate-shaped.

On the other hand, the plate-shaped material 20 has an engaging portion 22 on the side surface of one edge 21, which is a C-shaped groove capable of holding and engaging the thick engaging portion 15, and the cross-sectional shape of the plate-shaped material 20 is equal over the entire length. Also, this width is the cross section L
The width is made equal to the width of the side piece 16 of the character-shaped member 10 without the slit 13.

Functions and effects of the embodiment In addition to the same functions and effects as this invention, each comb tooth 14
The thick engaging portion 15 is held by the C-shaped engaging groove of the plate-shaped member to firmly connect the two. Furthermore, since both members are made of polyvinyl chloride, even if the heat exchange tube, which is the meandering tube 30, is made of metal, it will not undergo electrical corrosion.

In the above-mentioned example, the engaging parts 15 and 22 that engage the two shapes have a thick wall, and the other part has a C-shaped groove, but these are relative, and the tip of each comb tooth 14 The invention is the same even if a C-shaped groove-like engaging part is provided in the plate-shaped member 20, and one edge of the plate-shaped member 20 is made into a thick engaging part.

Further, the sizes of the two shapes 10, the pitch dimensions of the slits 13, the depth of cut, etc. are determined in advance to the designed dimensions.

In addition, when the parallel part 31 of the meandering pipe 30 is to be secured to the center of the side piece 11 of the L-shaped cross-section member 10 on which the slit 13 is located, one side of the engaging part 22 of the plate-like member 20 is slightly lengthened. A type having a meandering pipe holding portion 23 (see FIG. 4) is used.

[Brief explanation of the drawing]

The drawings show things related to this invention, and Fig. 1 is an exploded perspective view of a typical embodiment, Fig. 2 is a sectional view of the assembled state, Fig. 3 is a side view of the assembled state, and Fig. 4 is a side view of the assembled state. The figure is a cross-sectional end view of another embodiment, FIG. 5 is a partially sectional view of a known example, and FIG. 6 is a partially sectional side view of another known example. Main symbols in the figure, 10...L-shaped cross section, 11
...One side piece, 13...Slit, 14...
...Comb teeth, 15... Engaging portion, 20... Plate shaped material, 2
1... one edge, 22... interlocking part.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of two members of an L-shaped cross-section made of an electrical insulating material and a plate-shaped member having substantially equal lengths, one side of the L-shaped cross-section is formed into a comb-teeth shape with a number of meandering tube support slits arranged at a predetermined pitch in the perpendicular direction from one edge in the longitudinal direction, and the tip of each comb-teeth has a hooking part with the same shape on the side surface. The plate-shaped material has an engaging portion on one side edge thereof that has an equal cross-sectional shape over its entire length and can removably engage with each engaging portion of the tip of each comb tooth of the L-shaped cross-sectional material. A meandering pipe support spacer for heat exchange, characterized in that it is provided with. 2. Utility model registration claim No. 2, characterized in that the engaging portions of the tips of the comb teeth having an L-shaped cross section are respectively thick-walled engaging portions, and the engaging portions of the plate-shaped members are C-shaped groove engaging portions. The meandering pipe support spacer for heat exchange according to item 1.