JP2615730B2 - Plate heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a heat exchanger, and more particularly, to a radiator fin configuration of a radiator plate provided in a heat exchanger. Things. In the present invention, the fins separately installed on the plate base in the heat exchanger are integrated to improve the efficiency of the heat exchanger.

(Prior Art) Conventionally, a heat exchanger of this type is disclosed in British Patent No. 2132748B (referred to as a first prior art) as shown in FIGS. Heat exchangers are known in the art.

In this prior art, as shown in FIG. 4, a B plate, which is a passage of a medium to be cooled of a heat exchanger, is formed. In FIG. 5, an A plate is formed as a passage for the cooling medium. In this conventional technique,
Since the configurations of the A and B plates are almost the same, the same parts will be described with the same reference numerals and symbols.

Rows of unevenness 51 are formed on the metal plate 50. In the A plate, frames 52 are arranged in four circumferential directions of the metal plate 50. An inlet 55 for the medium to be cooled is provided at a pair of diagonal portions of the plate. Heat radiation zone
A strip 53 is disposed in the gap between the holes 51, and an introduction plate 54 for the medium to be cooled is provided at an end. In the B plate, a frame 52 is provided only in the horizontal direction in the drawing, and introduction plates 54 for controlling the flow of the cooling medium are provided at both ends.
FIG. 6 shows an A plate (FIG. 4) and a B plate (FIG. 5).
FIG. 2 is a perspective view in which the heat exchanger is configured by alternately stacking the heat exchangers shown in FIG. A and B in FIG.
4 shows a plate and a B plate. The arrow direction W indicates the flow direction of the cooling medium, and the arrow direction G indicates the flow direction of the cooling medium.

Japanese Utility Model Laid-Open No. 60-159,971 (hereinafter referred to as a second prior art) discloses a heat radiating zone having a vertical unevenness between two plate-like plates and a radiation band having a horizontal unevenness between two plate-like plates. Arrange the inner fins formed by press molding the tropics together,
A heat exchanger that joins the outer peripheries of two plate-like plates is disclosed.

(Problems to be Solved by the Invention) However, in the heat exchanger according to the first prior art, the A plate is composed of 15 single parts, and the B plate is composed of the same number of single parts. Things. Further, when the heat exchanger is constituted by the large number of parts, a large number of bonding points are required by the brazing, and a long brazing time is required.

In the heat exchanger according to the second prior art, a heat radiating band having a vertical uneven shape and a heat radiating band having a horizontal uneven shape are formed adjacently and integrally by press molding. Due to the different shrinking direction when molding the uneven shape by press molding, the shrinking direction when molding the internal fins is different, and warpage and sink marks occur on the internal fins during press molding, and the internal fins There is a problem in that the outer shape is deformed.

Therefore, in the present invention, in order to solve the above-mentioned problems, an attempt is made to provide a heat exchanger capable of obtaining heat exchange efficiency higher than that of the prior art by integrating the components on the plate constituting the heat exchanger. Is what you do.

[Configuration of the invention]

(Means for Solving the Problems) The technical means taken to solve the above technical problem includes an inlet and an outlet for the medium to be cooled, and a first outlet having a plurality of irregularities inside. A plurality of plate-shaped members having a plate base disposed between the tropics and the first heat radiation zone; a frame forming a housing of the heat exchanger by joining outer peripheries of the plurality of plate-shaped members to each other; A second radiating zone with a three-dimensional unevenness and a third radiating zone with a three-dimensional unevenness
And a fin disposed between the plate-like members, the fin being formed of an outer frame portion, a second heat radiation band, a third heat radiation band, and a second heat radiation band. And a third heat radiating band and a withdrawal portion facing the first heat radiating band.

(Operation) According to the above technical means, it is not necessary to form a plate by joining single members such as a heat radiation band by a soldering as in the first conventional technique. Further, unlike the second prior art, the fins (inner fins) are not warped or sinked by press molding, and the outer shape of the fins is not deformed. Specifically, by forming the extraction part between the second heat radiation band and the third heat radiation band of the fin, it is possible to absorb the difference in shrinkage that occurs when the uneven shape is formed by press molding. Becomes Furthermore, the fin extraction portion is
By facing the heat radiating band, the first heat radiating band can be fitted into the fin extraction portion to absorb the thickness and width of the first heat radiating band, and the housing of the heat exchanger can be made thin. The size of the exchanger can be reduced.

(Examples) Hereinafter, technical means of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a heat radiating plate A which is a component of the heat exchanger according to the present invention, and FIG. 2 shows a heat radiating plate B which is also a component of the heat exchanger according to the present invention. Since the structure of the heat radiating plate is substantially the same in all the heat radiating plates, the same portions are denoted by the same reference numerals. As the heat dissipation plate in this example, aluminum having a large heat dissipation effect was used as a plate material. 1 (a) and 2 (a), a plate (plate-like member) is formed with an opening serving as an inlet 1 for a medium to be cooled by press molding. An opening that is the outlet 2 is formed. Reference numeral 3 denotes a plate base, and reference numeral 4 denotes a projection (frame) similarly formed on both end faces of the plate by press molding, so that the plate A and the plate B can be joined. A heat radiation band 5 (first heat radiation band) is formed on the plate base surface. All of the above are integrally formed by press molding. FIG. 1B shows the fin A. The fins A are also formed by pressing a plate-shaped member into a concave-convex flow guide plate extending in the longitudinal direction (second fin).
A heat radiating band) 6, a fin frame (outer frame portion) 7 formed along the outer shape of the fin A, heat radiating strips (third heat radiating bands) 8 and 8 ', and a removal portion 7a punched out during press molding. Molded integrally. The strip 8,8 '
Although each has an uneven portion, the uneven portion is not formed by the same phase in forming the uneven portion, and each uneven portion is configured to be opposed by inverting the phase of the concave portion and the convex portion. . Reference numeral 6 denotes a flow guide plate for uniformly guiding the medium to be cooled to the base plate, and the flow guide plate 6 also has an uneven portion for increasing the efficiency of heat dissipation of the fluid. The radiation strips 8, 8 'and the flow guide plate 6 are integrally connected by a fin frame 7.

The first showing a state in which the fins A are overlaid on the heat radiating frame A
As shown in FIG. 3C, the extraction portion 7a of the fin A is provided at a position facing the position of the radiating band 5 formed on the radiating frame A. The heat radiation band 5 having the shape can be fitted into the extraction portion 7a, the flow guide plate 6 having the irregular shape, the heat radiation strips 8 and 8 'are opposed to the plate base 3, and the fin A is thinned on the heat radiation frame A. Small housed.
Further, since the heat radiating band 5 can be fitted into the extraction portion 7a, the heat radiating band 5 has a larger uneven surface depth than the flow guide plate 6 and the heat radiating strips 8 and 8 ', thereby increasing the surface area. Exchange efficiency can be increased. Furthermore,
By forming the extraction portion 7a on the fin A,
The shrinkage between the flow guide plate 6 and the heat radiating strips 8 and 8 ′ having different concave and convex directions can be absorbed during the press molding of the fins A, the fin frame 7 can have a predetermined size, and the extraction portion 7 a of the fins A can be formed. Can be accurately arranged at a position facing the heat radiating band 5 formed on the heat radiating frame A.

FIGS. 2 (b) and 2 (c) show a fin B which is a component of the heat exchanger according to the present invention. The fin B connects the flow guide plate 6 in the fin A to the heat radiation strips 8, 8 '. The other configuration is the same as that of the fin A.

With the above configuration, the plate base 3 and the fin A
Can form the heat radiation plate A, and can further form the heat radiation plate B by the plate base 3 and the fins B.

A feature of the present invention is that both the heat dissipation plates A and B have a curved portion R instead of the right-angled structure according to the prior art in the corner shape.

FIG. 3 is a schematic view of a heat exchanger according to an embodiment of the present invention, in which heat radiating plates A and heat radiating plates B are alternately stacked. I in FIG. 3 (b)
The portion on the right side of the -I line represents the heat radiating plate B, and the portion on the left side represents the heat radiating plate A.

FIG. 3 (a) is a drawing from the direction of arrow D in FIG. 3 (b), and FIG. 3 (c) is a drawing from the direction of arrow E in FIG. 3 (b). FIG. 7 proposes another embodiment of the shape of the strips 8, 8 '. 7 (a) is a plain fin, FIG. 7 (b) is a waveform fin, FIG. 7 (c) is a multi-entry fin, FIG. 7 (d) is a louver fin, FIG. 7 (e). Represents porous plate fins, and any fin shape can be applied to the present invention. These fins can be selected according to the heat exchange medium.
The above is the configuration according to the present invention. Next, the operation according to the present invention will be described.

In FIG. 3 (b), the medium to be cooled introduced into the heat exchanger through the inlet 1 is supplied to the plate base 3 by the flow guide plate 6.
Are distributed in a uniform amount through the heat radiation band 5 formed at the bottom. The medium to be cooled that has passed through the heat radiating zone 5 causes turbulence by the strips 8 and 8 ′ provided between the heat radiating zones 5, thereby causing a disturbance of the medium to be cooled in the heat exchanger and thereby dissipating heat. It is intended to improve. The medium to be cooled, which has dissipated heat by the heat radiating plate A, uniformly collects the medium to be cooled, which is led out of the heat radiating zone 5 by the flow guide plate 6,
The medium to be cooled is discharged to the outlet 2.

On the other hand, the flow of the cooling medium flows in, for example, the direction D shown in FIG. 3 (b) and flows out from the other end of the plate. The cooling medium passes through the gap 9 between the heat radiation plate A and the heat radiation plate B shown in FIG.

Furthermore, since the curved portions R are formed at the corners of the plates according to the present invention, when the plates are joined to each other, the rolls are uniformly spread without accumulating at the corners, and the joining force between the plates is reliably secured. Things.

In the present invention, the medium to be cooled is introduced into the inlet 1, discharged from the outlet 2, and the cooling medium flows through the gap 9. However, the cooling medium flows through the inlet 1 and is discharged from the outlet 2, It is sufficiently possible for the medium to be cooled to flow through the gap 9.

〔effect〕

By applying the present invention to a plate heat exchanger,
The frame part according to the prior art could be eliminated.
Further, the heat radiation strip is integrally connected by the fin frame, whereby the heat radiation amount can be improved.

In addition, the adoption of the fin frame makes it possible to greatly reduce the number of parts of the heat exchanger, thereby reducing the weight and the manufacturing cost.

[Brief description of the drawings]

Hereinafter, the drawings used in the embodiments of the present invention will be described. FIG. 1 is a plan view of a heat radiating plate A of the heat exchanger according to the present invention, and FIG. FIG. 3 is a plan view of a heat exchanger in which a heat radiating plate A and a heat radiating plate B are stacked. 4 and 5 are exploded views according to the prior art. FIG. 6 is a perspective view of a heat exchanger according to the prior art.
FIG. 7 is a perspective view of a strip shape applicable to the strip. 5 ... heat dissipation band, 6 ... flow guide plate, 7 ... fin frame, 8, 8 '... strip, R ... curved part.

Claims (1)

(57) [Claims] 1. A plurality of cooling mediums having an inlet and an outlet for a medium to be cooled, a first heat radiation band having a plurality of irregularities inside, and a plate base disposed between the first heat radiation bands. Plate member, a frame that forms the housing of the heat exchanger by joining the outer peripheries of the plurality of plate members to each other, a second heat radiation band having a vertical uneven shape, and a horizontal uneven shape. A plate-type heat exchanger including a fin disposed between the plate members and forming a third radiating band provided with the fin; an outer frame portion; the second radiating band; A plate-type heat exchanger, comprising: a heat-dissipating band; and a removing portion facing the first heat-dissipating band between the second heat-dissipating band and the third heat-dissipating band.