JPH0129434Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a heat exchange tube shelf that can be installed in the hold of a fishing boat and used as a cooler for freezing and preserving fish, or as other heat exchange equipment. Regarding the improvement of

(Prior Art) Among these types of heat exchange tube shelves, the one to which the present invention relates has several elements in which a plurality of tubes and shelf boards are integrally formed from extruded aluminum material, and each element has a shelf. It consists of a main body that is joined side by side so that the top surfaces of the plates are on the same plane, and a pair of headers that are fixed to both ends of the main body by welding, and the pipes are used to connect the headers through the pair of headers. The heat exchange medium is arranged to flow in a meandering manner.

(Problems to be solved by the invention) However, as shown in Figures 5 to 8, in the conventional structure, (a) the common header is directly welded to the pipe shelf body, and (b) the short pipe 18 is welded directly to the main body of the pipe shelf. There are two types: one in which each passage of the main body is fixed to a common header by sandwiching between the two, and (c) one in which the end of the pipe is connected to the end of the adjacent pipe by a bend pipe 19 without using a common header. However, in the structure (a) above, it is difficult to weld the base of the pipe and the shelf board (section A in Figure 6), and it is necessary to weld the entire width of the edge of the end of the main body. figure,
When inspecting for leaks after finishing, if a defect is found, it is difficult to know where the defect is.
There was a fatal flaw. In addition, in the method (b), the welding points are doubled, and space is wasted by the length of the short pipe section, which is disadvantageous in that it is against compactness. Furthermore, although the method (c) can properly detect leaks, there is a problem in that the protruding bent pipe creates unnecessary length and wastes space.

The purpose of the present invention is to solve the above-mentioned problems of the prior art. Therefore, it is possible to perform welding work and detect leaks appropriately, and to avoid unnecessary length of the pipe shelf. It is an object of the present invention to provide a heat exchange pipe shelf of a type that is compatible with downsizing.

(Means for Solving the Problems) The heat exchange pipe shelf according to the present invention has a feature at the end of the pipe shelf main body that is joined to the header, and each part of the shelf plate between the pipes at the end of the main body is A notch is provided, and by forming the notch, the end of each tube provided in the extruded material constituting the tube shelf can be welded to the corresponding position of the header over the entire circumference.

(Function) As mentioned above, since there is a notch in the shelf part between the tubes at the end of the main body, each tube at the end is exposed to the header all around the header like a simple tube. The welding process can be easily performed. Furthermore, since each tube is independently welded, each tube can be inspected for leaks independently, and if there is a defect, its location can be detected. In addition, the dimensions are the same as a type in which the header is directly fixed to the end of the main body, so there is no wasted space.

(Example) Next, an example of the present invention will be described with reference to the drawings. 1 and 2 show the whole of a heat exchange tube shelf according to an example of the present invention, and in this embodiment, one tube shelf 1 is composed of four elements 10. The number of elements is determined by the width dimension of the tube shelf. For normal ones, the width of the pipe shelf is 1~
2m, the length is 3~6m, and one pipe shelf has 4~
Eight elements are included. Each element 10 is made of extruded aluminum and consists of a shelf board 11 and an appropriate number of tubes 12 integrally formed on its lower surface, and as shown in FIG. 2, the upper surface of the shelf board 11 of each element is on the same plane. The elements 10 are bonded to each other in this manner. Headers 2 are attached to both ends of the tube shelf 1, partition plates are inserted into appropriate positions of the headers, and the tubes 12 and headers 2 form a meandering flow path. At the end of the tube shelf there is an inlet 3 and an outlet 4 for a heat exchange medium such as a refrigerant.
are provided, and the medium introduced through the inlet 3 flows in a tortuous manner through each passage 12 of the tube shelf and exits through the outlet 4, cooling or heating objects placed above or below it. Incidentally, an appropriate number of such tube shelves are usually arranged one above the other at a predetermined interval, and objects to be preserved such as fish to be cooled are stored between them. Further, each pipe shelf is attached by bolts or the like via aluminum flat bars onto beams of channel material provided horizontally at appropriate intervals in the longitudinal direction.

The features of the heat exchange pipe shelf according to the present invention are as shown in Figure 1.
As shown in FIGS. 3 and 4, a notch 13 is formed in the portion of the shelf board 11 between the tubes 12 at the end of the tube shelf body 1 that is joined to the header 2, whereby each tube 12 It is possible to weld the entire circumference at the end of the pipe. Although the shape of the notch 13 can be arbitrarily selected, it is preferably semi-elliptical as shown in the figure. Therefore, in this pipe shelf, each pipe 12
Since there are notches 13 on both sides of the end, the end of the tube 12 is welded to the header 2 over its entire circumference. It goes without saying that the dimension of the notch 13 in the longitudinal direction, ie in the direction parallel to the tube 12, is preferably the smallest dimension that allows welding of the tube 12 to the header 2.

Note that there are various methods for joining the elements 10 side to side, and any method can be used.
Preferably, as shown in FIG. 9, one side edge 14 of the elements to be joined is formed outwardly at right angles and the opposite side edge 15 of the other element is formed at right angles to the side edge 14 of the element to be joined.
side edge 1 formed at right angles inwardly so as to be superimposed on the horizontal protrusion projecting outwardly;
The horizontal protrusions 5 are made to protrude a little extra, and the extra protruding parts are welded 17 to each other. The side edges of the elements forming the side edges 16 of the tube shelf body 10 are curved. As is clear from FIG. 1, the joints between the elements also have notches 13.
, and preferably the ends of the side edges 16 are also notched.

Therefore, in this pipe shelf, pipe 12 is connected to header 2.
It is possible to weld the entire circumference of the end of the tube without any difficulty because there is no difficult welding point such as the base of the tube to the shelf board (section A in FIG. 6) in the conventional structure. Since each tube 12 of the main body 1 is welded independently, it is easy to inspect for leaks, and if there is a defect, it is immediately obvious where the leak has occurred.

Note that the cross-sectional shape of the header 2 may be square as shown in FIG. 4, or only the side surface joined to the tube 12 may be flat and the other portions may be circular, or the entire circumference may be circular. It may be of any shape.

(Effects of the invention) As described above, according to the invention, the pipe shelf main body is welded directly to the header without using a bend pipe or inserting a short pipe, so unnecessary dimensions in the longitudinal direction can be avoided. Does not occur. Since each tube has notches on both sides, each tube is welded to the header as an independent tube, so welding can be performed appropriately and easily, and leaks can be detected appropriately.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a heat exchange pipe shelf according to an example of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a perspective view of a part thereof, and Figs. are a sectional view taken along line B-B and line CC in FIG. 3, FIG. 5 is a perspective view of a part of a conventional pipe shelf, and FIG. 6 is a cross-sectional view taken along line D-- in FIG.
D sectional view, FIG. 7 is a perspective view of a part of a conventional pipe shelf of the type in which a short pipe is inserted, FIG. 8 is a perspective view of a part of a conventional pipe shelf using a bent pipe, and FIG. The figure is an enlarged view of section E in FIG. 2. In the figure, 1... tube shelf main body, 2... header, 10... element, 11... shelf board, 12... pipe, 13... notch part.

Claims (1)

[Claims for Utility Model Registration] (1) A pipe shelf main body formed by joining side-to-side several elements in which a plurality of pipes and shelf boards are integrally formed by extruded aluminum, and In the heat exchange tube shelf, the heat exchange medium is configured to flow in a meandering manner through the pair of fixed headers, and the heat exchange medium is configured to flow between the tubes at the end of the main body. A tube shelf for heat exchange, characterized in that a notch is formed in each part of the shelf plate so that the end of each tube can be welded to a corresponding position of the header over its entire circumference. . (2) Utility model registration The heat exchange tube shelf according to claim 1, wherein the notch has a semi-elliptical shape.