JP2535907Y2 - Heat exchanger - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger suitable for cooling the temperature in a housing of, for example, electronic equipment and devices.

[0002]

2. Description of the Related Art In a variety of electronic devices and devices including a printed circuit board group on which a large number of electronic components and the like are mounted, a power supply, and the like, the amount of internal heat generated by energization is large, and the amount of electronic In order to prevent thermal effects on components and the like, it is necessary to provide some cooling means. As such a cooling means, a forced air cooling type in which the outside air is forcibly supplied to the inside of the housing by a fan or the like and further circulated and discharged is most commonly used. It is necessary to prevent dust and other foreign matter from entering the housing with a filter, etc., and maintenance and inspection work due to clogging of this filter becomes frequent, and such a filter lacks certainty in terms of filtration performance. It was completely vulnerable to moisture, which is a problem with dust.

For this reason, in this kind of electronic equipment and apparatus, passage grooves for circulating air in the housing and outside air are formed alternately, and heat is exchanged between these passage grooves to cool the inside of the housing. A heat exchanger has been proposed in which a heat exchanger is attached to a part of a housing and partitions between the passage grooves to prevent dust, moisture, and the like from entering the housing. Most commonly known as such a conventional heat exchanger is one having a structure in which inner and outer passage grooves are alternately formed by sequentially bending plate materials so as to have a substantially U-shaped cross section. However, processing is troublesome and complicated,
In addition, components such as spacers for maintaining the width of each passage groove and an assembling operation thereof are required. In addition, turbulent air flows are likely to occur at the inlet and outlet of each passage groove, and the inflow and outflow of the air flow are hindered, the flow rate is reduced, and the problem of reduced heat exchange efficiency is inevitable. This is because, at the entrance and exit of each passage groove, the wall forming the other groove in the adjacent portion exists in a state where the air flow is interrupted, and the air flow collides with this and becomes turbulent. there were. Further, in the conventional structure described above,
Since the flow of the air flow in each groove also has a bent portion due to the positional relationship between the entrance and the exit of each passage groove, it cannot be performed smoothly because the air flow has a bent portion,
There is also a problem that air pockets and turbulent flows easily occur in each groove, and the heat exchange efficiency is reduced.

For this reason, according to Japanese Utility Model Application Laid-Open No. 60-71875 and the like, the present applicant bent both end side edge portions in directions opposite to each other and formed side edge portions close to these both end side edge portions. A plurality of plate-shaped plate pieces each having a rectangular shape formed by bending a part of the side edge portion in a direction opposite to the bending direction of the adjacent end side edge portion are alternately combined in the opposite direction. By stacking at predetermined intervals so that the tips of the side edge portions bent in the combination direction are joined to each other, an element configured to alternately form passage grooves through which different fluids flow is formed. Has been proposed earlier. According to such a structure, processing and assembling of each part can be performed relatively easily, and the opening area at the entrance and the exit of each passage groove is joined to the side edge portions of the plate pieces forming the other passage groove. By closing it, it was possible to form it so as to be wider than the groove width, so that the inflow and outflow of air into and out of each passage groove was smooth, and the heat exchange efficiency could be improved.

[0005]

However, even in such an improved heat exchanger, each plate piece constituting the heat transfer plate is formed with its side edge portion bent. Problems in terms of workability, such as the sealing structure at the tip contact portion of these bent side edges, the need for spacers to secure the width of each passage groove, and the ease of assembly This caused problems. In particular, in the above-described conventional structure, the number of components constituting the heat transfer plate body serving as the heat exchanger element is large, and the assembling work and the like are extremely complicated.

In the conventional structure described above, it is difficult to reliably seal and define the two types of passage grooves without any leakage of fluid between the passage grooves. The structure of the entire housing, including the end part having a fan for air introduction, an outlet, air suction, etc., attached to the end of the housing, is relatively complicated, and has a problem in terms of assemblability. Problems also arise in terms of the heat exchange efficiency of the entire element. That is, in this type of heat exchanger, the heat exchange efficiency of the element is proportional to the product of the heat transfer area and the wind speed, but in order to reduce the overall size and size of the conventional structure and increase the heat transfer area, It is necessary to reduce the width of the inner and outer passage grooves to increase the total number of grooves, and at the same time, to increase the passage length.
As a result, the thickness and length of the element are increased, and the structure is complicated.

In particular, since this type of heat exchanger is usually attached to a side wall, a ceiling, or the like in an equipment housing, it is often used.
In order to secure the internal space and to prevent the entire casing from becoming large, it is required to make the whole compact and compact, and to simplify the overall structure of the heat exchanger including the aforementioned elements and improve the assemblability, Further, it is desired that all the demands such as the performance improvement can be satisfied, and it is necessary to take some measures that can satisfy the demands.

[0008]

In order to respond to such a demand, a heat exchanger according to the present invention is provided with long hollow passage components arranged at predetermined intervals so that the inside of the elements and the space between the elements are arranged. Element for alternately forming first and second passage grooves through which different fluids flow, and an inlet and a passage groove group arranged on both ends of the element for introducing a fluid into one of the passage groove groups A pair of end members having an outlet for taking out a fluid from the other end, each end member having an insertion space into which each end of the element is inserted, and closing the end of the passage component. A protruding portion corresponding to the cross-sectional shape of the passage component and rib-shaped guides partitioning between the passage grooves on both sides thereof are protrudingly provided on the inner side wall portion in the insertion space on the side, and include the protruded portion and the rib-shaped guide. Department Adhesive is obtained so as to insert secure the passage component in a state of adhering to.

[0009]

According to the present invention, in the insertion space of the end member on the side that closes the end of the long hollow passage component, the cross-sectional shape of the passage component protruding from the back wall portion is adjusted. An adhesive is filled into a portion composed of a raised portion and a rib-shaped guide that partitions between the passage grooves on both sides thereof, and the passage component is inserted into this portion to face the portion, thereby bonding and fixing the passage component. Partial obstruction can be reliably performed.

[0010]

1 to 11 show one embodiment of a heat exchanger according to the present invention. In this embodiment, air inside a casing is attached to a side wall of a casing of various electronic devices and apparatuses. In the following, a description will be given of a case where is used as a heat exchanger for heat radiation for cooling with outside air.

First, a brief description will be given of a schematic configuration of a heat exchanger generally indicated by reference numeral 1 in FIG. 11. This heat exchanger 1 is formed so as to have a substantially rectangular parallelepiped shape. It is vertically arranged on a part of the side wall. In the heat exchanger 1, first and second fluids, which are different from each other, are alternately provided at the center of the heat exchanger 1 in the longitudinal direction (vertical direction in the figure), as is clear from FIGS. 1 to 4 and FIGS. 7 to 9. A heat exchanger element 3 forming a second group of passage grooves is provided.

According to the present invention, the heat exchanger element 3 is formed to have a predetermined length by extrusion molding or integral molding of a synthetic resin material or the like, for example, by using a metal material having excellent heat transfer characteristics. As shown in FIG. 9, a plurality of elongated hollow passage components 4 each having a flat cylindrical shape forming a groove are arranged side by side at a predetermined interval to be adjacent to the inside of the element 4. First and second flow paths for different fluids in the gap between the elements 4
Are formed so as to form the inner passage grooves 5 and 6 as well as the passage groove group. Although a specific illustration is omitted, a plurality of elements 4 arranged in parallel as shown in FIG.
It goes without saying that one of the passage groove groups (in this embodiment, the inner passage grooves 6) is formed by providing a seal material for sealing the gap formed therebetween from the outside at least on both the upper and lower sides. Such a sealing material may be provided integrally or separately inside the cylindrical cover 7 provided so as to cover the element 3.

Further, the element 4 constituting the above-mentioned element 3 is formed so that both ends are opened and a notch 4a is formed in a side edge portion corresponding to an air outlet described later. I have. In addition, outside air for cooling flows through the outer passage grooves 5 in the inner and outer passage grooves 5 and 6, which are formed separately in the heat exchanger element 3 as described above. The air in the housing cooled by the outside air flows through the inner passage groove 6, and heat exchange between these two fluids is performed.

Further, in the heat exchanger 1, on the element 3,
End members 10 and 11 made of a synthetic resin material or the like are attached to the lower end portions in a state where the inner ends are fitted to both ends of the cylindrical cover 7. On one side surface of the end members 10 and 11, inlets 12 and 13 for introducing a fluid into one of the passage grooves 5 or 6 of the element 3 are formed, and on the other side surface of the element 3 Outlets 14, 15 for leading the fluid from the other passage groove 6 or 5 to the outside are formed in a slit groove shape. In the figure, reference numeral 16 denotes a fluid suction fan disposed inside the inlets 11 and 12, and reference numeral 17 denotes a suction chamber formed inside the end members 10 and 11 inside the fan 16.

Further, as shown in FIGS. 5 to 8, the partition walls 18, 19 between the suction chambers 17, 17 and the insertion spaces 20, 21 of the element 3 in the end members 10, 11 described above. , Slit-shaped opening grooves 22 and 23 communicating with the opposing passage groove groups 5 and 6 respectively.
Are formed.

Then, as described above, the fluid inlets 12, 1
3 and the end members 1 constituting a space required to form the outlets 14 and 15 on the end side of the element 3
0, 11 and the insertion space 2 into which the element 3 is inserted on the inner end side of these end members 10, 11
0, 21 are provided, and the partition walls 18, 19 are provided with slit-shaped openings 22, 23, which are selectively connected to the passage grooves 5 or 6, so that the heat exchange area of the element 3 can be reduced. , 11 can be secured to improve the heat exchange efficiency, and the overall size and size can be reduced.

Further, in this embodiment, the end member 10 disposed above the element 3 is configured such that the inflow port 12 faces the inside of the housing 2 and introduces the air in the housing into the suction chamber 17. An outlet 14 on the other side is provided facing the outside of the housing 2. Further, in the end member 11 below the element 3, the inflow port 13 is arranged so as to be exposed to the outside of the housing 2 so that outside air can be introduced, and the outflow port 15 can allow air in the housing to be introduced into the housing 2. It faces inside the housing 2. It is desirable to provide a filter for removing dust and the like contained in the outside air at the inlet 13 in the lower end member 11.

In this embodiment, as described above, the first and second passage grooves 5 and 6 for passing different fluids (air in the housing and outside air) are formed in parallel so as to be alternately formed. Inflow ports 12, 13 for introducing a fluid into the one of the passage grooves 5 or 6, respectively disposed at both ends of the heat exchanger element 3 by a long hollow passage component 4 having a plurality of passage grooves; In the end members 10 and 11 having the outlets 14 and 15 for taking out the fluid from the other passage groove 6 or 5, the insertion space 20 into which the end of the passage component 4 constituting the element 3 is inserted.
21, the suction chamber 1 on the fan 16 side.
A plurality of slit-shaped opening grooves 22 and 23 communicating with one of the passage groups 5 and 6 are formed in the partition walls 18 and 19 with the partition wall 7, and the partition wall 1 on the back side of the insertion spaces 20 and 21.
On the side walls 8 and 19, rib-shaped guides 50; 51 and 51 are provided for partitioning the passage groove groups 5 and 6 and for guiding the passage component 4 in.

Here, these rib-like guides 50; 5
As can be seen from FIGS. 5 (a) and 5 (b) and FIGS. 6 (a) and 6 (b), the protrusions 1 and 51 increase in the insertion spaces 20 and 21 as they go deeper. As a result, a function as a partition and a guide between the passage groove groups 5 and 6 can be exhibited.

According to such a configuration, a plurality of elongated hollow passage components 4 are provided side by side at a predetermined interval between the pair of end members 10, 11.
A heat exchanger capable of performing heat exchange between these fluids by forming first and second passage grooves 5 and 6 for allowing different fluids (outside air and air in the housing) to flow between the inside and the element 4. Not only can be obtained, but also the end members 10,
Plug-in spaces 20, 21 for inserting 11 passage components 4
The rib-shaped guides 50, 51, 51 serving as partitions and insertion guides between the passage groove groups 5, 6 formed therein improve the assemblability of the long hollow passage component 4 and improve the passage of each passage. The sealability between the groove groups can be ensured.

According to the present invention, in the heat exchanger 1 having the above-described structure, the insertion spaces 20, 21 into which the respective ends of the passage components 4 of the elements 3 formed in the end members 10, 11 are inserted. The end member 10 on the side where the end of the long hollow passage component 4 is closed.
In the back wall part (partition wall 18) in the insertion space 20 at
As is clear from FIG. 10, a rib-shaped guide 50 having a shape corresponding to the hollow cross-sectional shape of the passage component 4 and having a cross section of an arc shape and partitioning between the passage grooves 5 and 6 on both sides thereof. Protruding, and these bulging parts 4
The passage component 4 is inserted in a state where the adhesive 41 is filled in a portion consisting of the ribs 50 and the rib-shaped guide 50, and the end portion is bonded and fixed.

According to such a configuration, in the insertion space 20 of the end member 10 on the side that closes the end of the channel component 4, the channel configuration projecting from the rear wall (partition wall 18). A raised portion 40 corresponding to the cross-sectional shape of the element and a rib-shaped guide 5 for partitioning between the passage grooves on both sides thereof
The passage component 4, which is inserted into this portion and faced by the portion consisting of 0, 50 and the adhesive 41 filled therein, can be securely adhered and fixed, and its end can be closed.

According to the above configuration, the heat exchanger 1
Can be composed of an element 3 composed of a plurality of flat tubular passage components 4 and a pair of end members 10 and 11 attached to both ends thereof. The heat exchanger 1 is configured by appropriately attaching the fan 16 and the like, as compared with a conventional case where a heat transfer plate body in which multilayer plate pieces are connected by appropriate connecting parts is used. The overall number of components can be greatly reduced, and the effects can be exerted in achieving simplification of the configuration, improvement in assemblability, and cost reduction.

Further, the above-described structure has the advantages that the passage grooves and the like can be efficiently arranged to obtain the required heat exchange efficiency, and that the whole can be made compact and compact.

The present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part can be appropriately modified and changed. Applicable equipment and devices are also applicable to various fields. Conceivable.

[0026]

As described above, according to the heat exchanger of the present invention, the long hollow passage components are arranged side by side at a predetermined interval, and different fluids flow between the inside of the element and between the elements. A heat exchanger element for alternately forming first and second passage grooves to be formed, and an inflow port for introducing a fluid to one of the passage groove groups disposed on both ends of the element and a fluid from the other of the passage groove groups. It has a pair of end members having an outlet to be led out, each end member has an insertion space into which each end of the element is inserted, and in the insertion space on the side that closes the end of the passage component among them. On the rear side wall portion, a raised portion corresponding to the cross-sectional shape of the passage component and rib-shaped guides partitioning between the respective passage grooves on both sides thereof are projected, and an adhesive is applied to a portion formed by the raised portion and the rib-shaped guide. Adhere Since the passage component is inserted and fixed in the state, despite the simple structure, a raised portion corresponding to the end cross-sectional shape of the passage component and a rib-shaped guide that partitions between the passage grooves on both sides thereof, It is possible to reliably insert and fix the passage component with the adhesive filled in this part and securely adhere and fix the end of the element, and to ensure the sealing property between the passage grooves, which is variously excellent in practical use. Has an effect.

[Brief description of the drawings]

FIG. 1 is an overall schematic cross-sectional view showing one embodiment of a heat exchanger according to the present invention.

FIG. 2 is a schematic side view of FIG.

FIG. 3 is a schematic cross-sectional view at a position different from FIG.

FIG. 4 is a schematic side view of the side opposite to FIG. 2 in FIGS. 1 and 3;

5 (a) and 5 (b) are enlarged cross-sectional views of main parts at positions corresponding to different passage grooves in the right end member.

6 (a) and 6 (b) are enlarged cross-sectional views of main parts at positions corresponding to different passage grooves in the left end member.

7A is a side view of one of the right end members, and FIG. 7B is an end view of the right end member as viewed from an inner end thereof.

8 (a) is a side view of one of the left end members, and FIG. 8 (b) is an end view of the left end member as viewed from an inner end thereof.

FIG. 9 is a schematic perspective view for explaining a state in which long hollow passage components constituting the heat exchanger element are juxtaposed.

FIG. 10 is a schematic diagram for explaining an assembled and fixed state of a passage component and an insertion space deep side wall portion on the end member side for closing an end thereof.

FIG. 11 is a schematic configuration diagram for explaining a use state of the heat exchanger according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat exchanger 2 housing 3 heat exchanger element 4 long hollow passage component 4a notch 5 first passage groove (outer passage groove) 6 second passage groove (inner passage groove) 7 cylindrical case DESCRIPTION OF SYMBOLS 10 End member 11 End member 12 Inlet 13 Inlet 14 Outlet 15 Outlet 16 Fan 17 Suction chamber 18 Partition wall 19 Partition 20 Insert space 21 Insert space 22 Opening groove 23 Opening groove 40 Raised portion 41 Adhesive 50 Rib guide 51 Rib guide

Claims (1)

(57) [Scope of request for utility model registration] 1. First and second passage grooves for allowing different fluids to flow between the inside of the element and between the elements are alternately formed by arranging elongated hollow passage components at predetermined intervals. A heat exchanger element configured as follows;
A pair of end members disposed on both ends of the element and having an inflow port for introducing fluid into one of the passage groove groups and an outflow port for leading fluid out of the other of the passage groove groups, Each of the end members has an insertion space into which each end of the element is inserted, and among these insertion spaces, a back wall in an insertion space that closes an end of the passage component, While projecting a bulging part that matches the cross-sectional shape of the passage component,
On both sides, rib-shaped guides projecting between the passage grooves protrude,
A heat exchanger, wherein the passage component is inserted and fixed in a state where an adhesive is adhered to a portion formed by the raised portion and the rib-shaped guide.