JPH0561673U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the assembling property and the sealing property of an end member of a passage constituent element that constitutes a heat exchanger element that alternately forms passage grooves for flowing different fluids. A heat exchanger element 3 in which long hollow passage constituent elements 4 are arranged in parallel, and first and second passage grooves 5 and 6 for flowing different fluids inside and between adjacent elements are alternately formed.
Make up. Into the end members 10 and 11 arranged at both ends of the element, the insertion spaces 20 and 2 of the passage constituent elements are inserted.
1 is formed. On the inner side wall portion 18 of the insertion space on the side that closes the ends of the passage constituent elements, a raised portion 40 that matches the element cross-sectional shape and rib-shaped guides 50 that partition between the passage grooves 6 and 6 are provided on both sides thereof. To do. The adhesive 41 adheres to the portion formed by the raised portion and the rib-shaped guide, and the passage constituent elements are inserted and fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger suitable for use in, for example, cooling the temperature inside a housing of electronic equipment, devices, and the like.

[0002]

[Prior Art]

 For various electronic devices and devices that have a printed circuit board group with a large number of electronic components mounted and a built-in power supply, etc., the internal heat generation due to energization is large, and It is necessary to attach some kind of cooling means to prevent thermal effects. The most common cooling means is a forced air cooling system in which the outside air is forcibly supplied into the housing by a fan or the like, and then the air is circulated and exhausted, but it affects internal parts. It is necessary to prevent dust and other foreign matter from entering the housing with a filter, etc., and maintenance and inspection work is often performed due to clogging of the filter.In addition, such a filter lacks certainty in terms of filtration performance. Moreover, it was completely unprotected against the problematic moisture as well as dust.

Therefore, in this type of electronic device or apparatus, heat dissipation for cooling the inside of the housing by alternately forming passage grooves for circulating the air inside the housing and the outside air and exchanging heat between these passage grooves. It has been proposed in the past to attach a heat exchanger for the housing to a part of the housing, and to partition the passage grooves to prevent the ingress of dust, moisture, etc. into the housing. There is. Most commonly, such a conventional heat exchanger has a structure in which inner and outer passage grooves are alternately formed by sequentially bending and forming plate members so as to have a substantially U-shaped cross section. Although it is known, machining was complicated and complicated, and moreover, components such as spacers and assembling work for maintaining the groove width of each passage groove were required. Furthermore, turbulent air flow is likely to occur at the inlet and outlet of each passage groove, and the inflow and outflow of the air flow is obstructed, the flow rate becomes small, and the problem of heat exchange efficiency is inevitable. This is because, at the entrance and exit of each passage groove, the wall that forms the other groove at the adjacent portion exists in a state of blocking the air flow, and the air flow collides with this and becomes a turbulent flow. there were. Further, in the above-mentioned conventional structure, the air flow in each groove cannot be smoothly performed due to the positional relationship between the inlet and outlet of each passage groove, so that air flow in each groove cannot be performed smoothly. There was also a problem that turbulent flow was likely to occur and the heat exchange efficiency was reduced.

For this reason, the applicant of the present application, according to Japanese Utility Model Laid-Open No. 60-71875 and the like, bends the side edge portions of both end portions in directions opposite to each other and closes the side edge portions of both end portions. A plurality of flat plate pieces in the shape of a rectangle formed by bending a part of the side edge parts in the direction opposite to the bending direction of the adjacent end side edge parts are assembled alternately in opposite directions. Alignment By laminating the side edge parts bent in the direction of assembly in a predetermined interval so that the tips of the side edge parts are joined to each other, passage grooves through which different fluids flow can be formed alternately. We have previously proposed a heat exchanger with elements. With such a structure, processing and assembling of each part can be performed relatively easily, and the opening area at the inlet and outlet of each passage groove can be adjusted to the side of the plate piece forming the other passage groove. By joining and closing the edge parts, it can be formed so as to be wider than the groove width, which makes it possible for air to flow in and out of each passage groove smoothly and improve heat exchange efficiency. Met.

[0005]

[Problems to be solved by the device]

 However, even with such an improved heat exchanger, there is a problem in terms of workability such as forming each plate piece constituting the heat transfer plate body with its side edge portions bent. And the sealing structure at the tip contact part of these bent side edges, the need for spacers to secure the groove width of each passage groove, and problems in terms of its assembling property. there were. In particular, in the above-mentioned conventional structure, the number of parts constituting the heat transfer plate body which is the element for the heat exchanger is large, and the assembling work and the like are extremely complicated.

Further, in the above-described conventional structure, it is difficult to reliably define and define the two kinds of passage grooves without leakage of fluid between these passage grooves. The structure of the entire housing, including the element and the end part that is installed on the end of the element and has air inlet, outlet, air intake fan, etc., is relatively complicated, and there is a problem in terms of assembly. In addition, there is a problem in terms of heat exchange efficiency of the entire element. That is, in this type of heat exchanger, the heat exchange efficiency by the element is proportional to the product of the heat transfer area and the wind speed.However, in order to reduce the overall size and size of the conventional structure and increase the heat transfer area, However, it is necessary to narrow 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, resulting in a large element thickness and length, which complicates the structure. It was

In particular, since this type of heat exchanger is usually attached to the side wall portion or the ceiling portion inside the equipment casing, it is necessary to secure an internal space or prevent the entire casing from becoming large. Therefore, it is possible to satisfy all requirements including simplification of the entire structure of the heat exchanger including the above-mentioned elements, improvement of assemblability, and improvement of performance, etc. Therefore, it is necessary to take some measures to satisfy this.

[0008]

[Means for Solving the Problems]

 In order to meet such a demand, the heat exchanger according to the present invention has a structure in which long hollow passage-forming elements are arranged side by side at a predetermined interval to allow different fluids to flow inside and between the elements. A heat exchanger element that alternately forms first and second passage grooves, and an inlet for introducing the fluid into one of the passage groove groups arranged at both ends of this element and the fluid being led out from the other of the passage groove groups. A pair of end members each having an outlet for allowing each end member to have an insertion space into which each end of the element is inserted, and in which the end of the passage component is closed. On the inner side wall, a raised portion that matches the cross-sectional shape of the passage forming element and rib-shaped guides that partition between the passage grooves on both sides of the raised portion are provided in a protruding manner. The state where In in which the passage forming elements so as to plug fixed.

[0009]

According to the present invention, according to the cross-sectional shape of the passage component projecting on the back wall portion in the insertion space in the end member on the side that closes the end of the elongated hollow passage component. The ridges and rib-shaped guides that separate the passage grooves on both sides are filled with adhesive and the passage components are inserted into this part to face the passage components. The adhesive fixing and the end closing can be surely performed.

[0010]

【Example】

 1 to 11 show an embodiment of the heat exchanger according to the present invention. In this embodiment, the air inside the housing is attached to the side wall of the housing of various electronic devices and apparatuses so that the air inside the housing is exposed to the outside air. A case where the heat exchanger is used to radiate heat for cooling will be described.

First, a brief description will be given of a schematic configuration of a heat exchanger generally indicated by reference numeral 1 in FIG. 11. The heat exchanger 1 is formed so as to have a substantially rectangular parallelepiped shape, and a device housing 2 It is vertically arranged on a part of the side wall portion thereof. Further, in the center of the heat exchanger 1 in the longitudinal direction (vertical direction in the drawing), as is apparent from FIGS. 1 to 4 and FIGS. A second passage is provided with a heat exchanger element 3 forming a groove group.

According to the present invention, the heat exchanger element 3 is formed to have a predetermined length by, for example, extrusion molding of a metal material having excellent heat transfer characteristics or integral molding of a synthetic resin material. As is apparent from FIG. 9, a plurality of elongated hollow passage constituent elements 4 each having a flat tubular shape forming a narrow groove are arranged side by side at predetermined intervals so as to be adjacent to the inside of the element 4. In addition to the first and second passage groove groups that allow different fluids to flow therethrough, the inner passage grooves 5 and 6 are formed in the gap between the elements 4. Although not specifically shown, a sealing material for externally sealing the gap formed between the plurality of elements 4 arranged side by side as shown in FIG. 9 should be provided at least on both upper and lower sides. It goes without saying that one passage groove group (in this embodiment, the inner passage groove 6) is formed. Such a seal material may be attached integrally or separately inside the cylindrical cover 7 attached so as to cover the element 3.

Further, the element 4 constituting the above-mentioned element 3 is formed such that both ends thereof are opened, and a notch 4a is formed at a side edge portion corresponding to an air outlet described later. ing. In addition, as described above, in the outer passage grooves 5 and 6 of the heat exchanger element 3 which are formed by being divided into every other one, the outside air for cooling flows into the outer passage groove 5, The air in the housing cooled by the outside air flows through the inner passage groove 6 to perform heat exchange between these two fluids.

Further, end members 10 and 11 formed of a synthetic resin material or the like are provided at upper and lower end portions of the element 3 in the heat exchanger 1, and inner end portions are provided at both ends of the tubular cover 7. It is designed to be assembled in the state that it is fitted. Then, on one side surface of these end members 10 and 11, inflow ports 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, the element 3 of the element 3 is introduced. Outlets 14, 15 for leading out the fluid from the other passage groove 6 or 5 to the outside are formed in a slit groove shape. In the figure, 16 is a fluid suction fan arranged inside the inflow ports 11 and 12, and 17 is a suction chamber formed inside the end members 10 and 11 inside these fans 16.

Further, in the partition walls 18 and 19 between the suction chambers 17 and 17 and the insertion spaces 20 and 21 of the element 3 in the end members 10 and 11 described above, as is apparent from FIGS. The slit-shaped opening grooves 22 and 23 communicating with the mutually opposite passage groove groups 5 and 6 are formed.

Then, the fluid inlets 12 and 13 and the outlets 14 and 15 are provided in the end members 10 and 11 which form a space required to be formed on the end side of the element 3, and Insertion spaces 20 and 21 into which the element 3 is inserted are provided on the inner end sides of the end members 10 and 11, and the partition walls 18 and 19 thereof are provided with slit-shaped openings 22 that are selectively connected to the passage grooves 5 or 6. , 23 are formed, the heat exchange area in the element 3 can be secured by utilizing the inside of the end members 10, 11 as well, and the heat exchange efficiency can be improved, and the overall size and size can be reduced. Is.

Further, in the present embodiment, in the end member 10 arranged above the element 3, the inlet 12 faces the inside of the housing 2 and the air inside the housing is introduced into the suction chamber 17. The outlet 14 on the other side is provided so as to face 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 the outside air can be introduced, and the outflow port 15 allows the air in the housing to be introduced into the housing 2. Facing the inside of the housing 2. It should be noted that it is desirable to provide a filter for removing dust and the like contained in the outside air at the inlet 13 portion of the lower end member 11.

Further, in the present embodiment, as described above, the first and second passage grooves 5 and 6 for circulating different fluids (air in the housing and outside air) are formed in parallel so as to be alternately formed. Inflow ports 12 and 13 for respectively introducing the fluid into the one passage groove 5 or 6 which are arranged at both ends of the heat exchanger element 3 by the elongated hollow passage component 4 having a plurality of passage grooves. In the end members 10 and 11 having the outlets 14 and 15 for discharging the fluid from the other passage groove 6 or 5, the insertion spaces 20 and 21 into which the ends of the passage constituent elements 4 constituting the element 3 are inserted. A plurality of slit-shaped opening grooves 22 and 23 communicating with one of the passage groups 5 and 6 are formed in a wall portion on the back side of the fan, that is, partition walls 18 and 19 with the suction chamber 17 on the fan 16 side. Rib-shaped guides 50 that serve as guides for partitioning between the respective passage groove groups 5 or 6 and for inserting the passage constituent elements 4 in the partition walls 18 and 19 on the far side of the insertion spaces 20 and 21 and the side wall portions on both sides; 51, 51 are provided.

Here, the rib-shaped guides 50; 51, 51 are inserted into the insertion spaces 20, 21 as shown in FIGS. 5 (a) and 5 (b) and FIGS. 6 (a) and 6 (b). In the configuration, the amount of protrusion is increased as it goes to the back side, so that the function as a partition and a guide between the passage groove groups 5 and 6 can be exerted.

According to such a configuration, a plurality of elongated hollow passage constituent elements 4 are provided side by side at predetermined intervals between the pair of end members 10 and 11, and the inside of the element 4 is provided. By forming the first and second passage grooves 5 and 6 that allow different fluids (outside air, air inside the housing) to flow between the fluid and the element 4, a heat exchanger that can perform heat exchange between these fluids is provided. Not only is it possible to obtain the ribs, but also ribs serving as partitions and guides for insertion between the passage groove groups 5 and 6 formed in the insertion spaces 20 and 21 into which the passage constituent elements 4 of the end members 10 and 11 are inserted. By the shape guides 50; 51, 51, the assembling property of the elongated hollow passage component 4 can be improved, and the sealing property between the passage groove groups can be secured.

Now, according to the present invention, in the heat exchanger 1 having the above-mentioned configuration, the insertion space 20 into which each end of the passage constituent element 4 in the element 3 formed in each end member 10 and 11 is inserted. , 21, the rear side wall portion (partition wall 18) in the insertion space 20 of the end member 10 on the side where the end portion of the elongated hollow passage component 4 is closed, as is clear from FIG. A raised portion 40 having a shape matching the hollow cross-sectional shape of the passage component 4 and having an arc-shaped cross section, and rib-shaped guides 50 partitioning the passage grooves 5 and 6 on both sides of the raised portion 40 are provided in a protruding manner. The passage component 4 is inserted in a state in which the adhesive 41 is filled in the portion composed of the ribs 40 and the rib-shaped guide 50, and the ends are bonded and fixed.

Further, according to such a configuration, in the insertion space 20 in the end member 10 on the side that closes the end portion of the passage component 4, the wall portion on the back side (partition wall 18) is provided so as to project. The raised portion 40 corresponding to the cross-sectional shape of the passage component and the rib-shaped guides 50, 50 separating the passage grooves on both sides of the raised portion 40 and the adhesive 41 filled in the portion are inserted to face this portion. The passage component 4 to be provided can be firmly adhered and fixed, and its end can be closed.

According to the above configuration, the heat exchanger 1 includes the element 3 including the plurality of passage forming elements 4 each having a flat tubular shape, and the pair of end members 10 mounted on both ends thereof. The heat exchanger 1 can be configured by three bodies 11 and can be assembled in a required state, and the fan 16 and the like can be appropriately attached, so that the heat exchanger 1 can be configured. Compared to the case of using a heat transfer plate body that is connected with appropriate connecting parts, the number of the whole component parts can be significantly reduced, and the structure can be simplified, the assemblability can be improved, and the cost can be reduced. Can be effective in.

Further, in the above-described structure, the passage grooves and the like can be efficiently arranged to obtain the required heat exchange efficiency, and there is an advantage that the overall size and size can be reduced.

The present invention is not limited to the structure of the above-described embodiment, but the shape, structure, etc. of each part can be appropriately modified and changed, and the applied device and apparatus thereof are in various fields. Can be considered.

[0026]

[Effect of the device]

 As described above, according to the heat exchanger of the present invention, the long hollow passage constituent elements are arranged in parallel at a predetermined interval to allow different fluids to flow between the inside of each element and between each element. A heat exchanger element in which second passage grooves are alternately formed, an inflow port which is arranged at both ends of this element and which introduces fluid into one of the passage groove groups, and a flow which leads out fluid from the other of the passage groove groups. A pair of end members having an outlet, each end member having an insertion space into which each end of the element is inserted, and the inner side wall in the insertion space on the side that closes the end of the passage component A ridged portion corresponding to the cross-sectional shape of the passage forming element and rib-shaped guides partitioning the passage grooves on both sides of the ridged portion are provided in a protruding manner, and an adhesive agent is applied to the portion formed by the ridged portion and the rib-shaped guide. In the attached state Since the passage components are inserted and fixed, a rib-shaped guide that separates the passage grooves on both sides of the raised portion that corresponds to the cross-sectional shape of the end of the passage component, and this portion, despite the simple structure. With the adhesive filled in, the passage components can be inserted and securely fixed, and the ends of these components can be surely blocked, ensuring the sealing between the passage grooves. There is an effect.

[Brief description of drawings]

FIG. 1 is an overall schematic sectional view showing an 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 that in FIG.

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

FIG. 5 is an enlarged cross-sectional view of an essential part showing cross sections at positions corresponding to different passage grooves in the right end member shown in (a) and (b).

FIG. 6 is an enlarged cross-sectional view of an essential part showing cross sections at positions corresponding to different passage grooves in the left end member, shown in FIGS.

7 (a) is a side view of one of the right end members, and FIG. 7 (b) is an end view as seen from the inner end side thereof.

FIG. 8A is a side view of one of the left end members, and FIG. 8B is an end view as seen from the inner end side thereof.

FIG. 9 is a schematic perspective view for explaining a state in which long hollow passage constituent elements that constitute the heat exchanger element are arranged side by side.

FIG. 10 is a schematic diagram for explaining a state of assembling and fixing a passage constituent element and a rear side wall portion of the insertion space on the end member side that closes the end portion thereof.

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

[Explanation of symbols]

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

Claims (1)

[Scope of utility model registration request] 1. A first hollow passage and a second hollow passage, which allow different fluids to flow between the inside of each element and between the elements, are formed alternately by arranging elongated hollow passage constituent elements side by side at predetermined intervals. And a heat exchanger element configured as
The element is provided with a pair of end members disposed on both end sides of the element and having an inlet for introducing a fluid into one of the passage groove groups and an outlet for leading out a fluid from 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 wall portion on the back side of the insertion space on the side that closes the end of the passage component, In addition to projecting a raised portion that matches the cross-sectional shape of the passage component,
Rib-shaped guides that partition between the passage grooves are projected on both sides,
A heat exchanger characterized in that the passage constituent elements are inserted and fixed in a state in which an adhesive is adhered to a portion constituted by the raised portion and the rib-shaped guide.