JPH0129436Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is an improvement of a heat exchange unit 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 devices. Regarding.

(Prior Art) Among these types of heat exchange units, the one to which the present invention relates is a heat exchange unit in which several elements each made of an extruded material having a plurality of through holes extending in the longitudinal direction are arranged so that the surfaces of each element are on the same surface. It includes a main body joined side-to-side so that A partition plate is inserted into the header at an appropriate position so that the heat exchange medium flows in a meandering manner through the flow path and the pair of headers. The reason why all the through-holes in the main body are not used as flow paths, and the flow paths are arranged at appropriate intervals, and each through-hole between the flow paths is not used as a flow path, is to reduce the number of flow paths and increase the flow rate of the heat exchange medium. This is to increase the flow rate and thereby increase the thermal efficiency.

(Problems to be solved by the invention) In the conventional structure, the entire length of the side surface of the header that is joined to the main body is opened, and the end of the main body is held in the opening of the header as shown in Fig. 7 A. The welding process was not easy because the header was welded along the length of the header, or the opening side of the header was butted against the end of the main body as shown in Figure B, and then welded along the length of the header. In addition, when a defect is found during a leak inspection, it is difficult to locate the defect.

The purpose of the present invention is to overcome the problems of the prior art described above, and therefore provide a heat exchange unit with a structure that allows easy welding of the header to the main body and allows for proper leakage inspection. It is to be.

(Means for Solving the Problems) The heat exchange unit according to the present invention has a feature at the end of the unit body to which the header is fixed, and a flow path consisting of a plurality of sets of through holes in the body is suitable. At the same time, notches penetrating from one surface to the other are formed on both sides of each flow path at the end of the main body, and the presence of such notches makes it difficult to weld. This was done so that it could be carried out appropriately.

(Effect of the above means) In this heat exchange unit, as described above, there is a notch penetrating through both sides of the flow path consisting of a set of a plurality of through holes at the end of the main body. Since it is possible to weld the portions on both sides of the flow path, and therefore the entire circumference of the flow path can be welded, each flow path can be appropriately joined to the corresponding hole in the header. In addition, since each flow path is welded independently, leakage inspection is performed for each flow path.
If there is a defect, its location can also be detected.

(Example) Next, an example of the present invention will be described with reference to the drawings. 1 and 2 show the entire heat exchange unit according to an example of the present invention,
In this embodiment, three elements 10 constitute the main body 1 of the heat exchange unit, but the number of elements is determined by the width dimension of the unit main body. Typically, the main body has a width of 1 to 2 m and a length of 3 to 6 m, and one unit includes 3 to 6 elements. Each element 10 consists of an extruded aluminum profile having a plurality of longitudinally extending through holes 11, typically six to ten. Each element 10 is joined side by side so that its upper and lower surfaces are flush with the adjacent element. In the illustrated example, the cross-sectional shape of the through hole 11 is square, but the shape may be circular, rectangular,
Other shapes such as an oval may also be used.

There are various methods of joining the elements 10 side to side, but preferably, as shown in FIG. By mating, the opposite sides are joined.

Headers 2 are fixed to both ends of the unit body 10, and at least one of the headers 2 is provided with an inlet 3 and an outlet 4 for a heat exchange medium. As is clear from FIG. 1, a single flow path is constituted by a set of a plurality of mutually adjacent through holes 11. In the illustrated embodiment, two through holes 11 constitute a flow path. Such channels are arranged at appropriate intervals, and therefore the through holes 11 between the channels are not used as channels. As seen in FIG. 4, each position of the header 2 to which these channels 14 correspond has an area corresponding to the plurality of through holes 11 constituting the channels 14, that is, indicated by diagonal lines in FIG. , the hole 1 with the minimum area including those through holes 11
5 is formed, and partition plates 2a are inserted at appropriate positions, and each passage of the main body 1 and the header 2 constitute a meandering flow passage. Therefore, entrance 3
The heat exchange medium introduced through the unit flows in a serpentine manner through the unit and exits through the outlet 4, cooling or heating objects placed above or below it. Usually, a suitable number of such units are arranged one above the other at predetermined intervals, and an object to be preserved, such as a fish, is stored between them.

The feature of the heat exchange unit according to the present invention is that, as shown in FIG. 1 and FIGS.
A notch 16 penetrating from the upper surface to the lower surface is formed, thereby making it possible to weld the entire circumference of the flow path 14 to the header 2. In other words, the presence of such a notch 16 makes it possible to weld parts on both sides of the flow path 14 (portions indicated by c and d in FIG. 5), and therefore it becomes possible to weld the entire circumference of the flow path. . Although the shape of the notch 16 is oval in the illustrated example, it goes without saying that the shape may be arbitrary. Further, although it is preferable that the cutout portion 16 is formed at a position of the through hole 11 that is not used as a flow path, the cutout portion 16 may be formed at a joint portion between the elements 10. It goes without saying that the area not used as a flow path is also a heat exchange surface, but it also plays a reinforcing role. Although it is preferable that the size of the notch 16 is the smallest as long as it allows welding around the entire circumference of the flow path, as shown in FIG. It may be 16'.

Although not shown in the figure, stoppers are installed along the edges on both sides of the main body 1 and on the header 2 to prevent items supported on the unit from slipping down.

(Effects of the Invention) Therefore, according to the present invention, the header can be attached by welding around the entire circumference of the flow path consisting of a plurality of through holes without any particular difficulty.
Since each flow path is welded, it is easy to inspect for leaks, and if there is a defect, its location can be immediately identified. Furthermore, the welding strength of the header to the main body is also favorable.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a heat exchange unit according to an example of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG.
The figure is an enlarged view of part B in Figure 2, Figure 4 is a partial perspective view of the header before it is fixed to the main body, and Figure 5 is a partial perspective view of the state before fixing the header to the main body.
The figure is a partial perspective view showing the end of the main body, FIG. 6 is a partial plan view of another embodiment, and FIGS. 7A and 7B are partial sectional views showing the prior art. In the figure, 2...Header, 10...Element, 11...Through hole, 14...Flow path, 16, 16'...Notch.

Claims (1)

[Scope of utility model registration request] A main body formed by bonding side-to-side several extruded elements each having a plurality of through-holes extending in the longitudinal direction, and a pair of headers fixed to both ends of the main body, and the plurality of through-holes. In a heat exchange unit, a set of flow channels are formed at appropriate intervals, and the heat exchange medium flows in a meandering manner through such flow channels and a pair of the headers. A notch is formed in both sides of each of the channels so that the channel can be welded to the header over the entire circumference of the channel, penetrating from one surface to the other surface. heat exchange unit.