JP2764045B2 - Method of manufacturing plate for heat exchanger - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a plate for a heat exchanger.

[Conventional technology]

When the liquid flow paths of the medium are alternately configured by the laminated plates, different performances are required for the liquid flow paths according to the physical properties and design conditions of each medium.

For this purpose, as described in Japanese Patent Publication No. 48-33663, this is achieved by combining different shapes such as the number of waves, the position, and the spread in the vertical direction with respect to the wave shape formed on the plate. Is done.

[Problems to be solved by the invention]

In order to implement the method described in JP-B-48-33663, various types of press dies are required,
A large number of expensive dies must be prepared, leading to a rise in manufacturing costs.

In order to improve this point, a proposal has been made to press-form plates having various temperature ratio characteristics by exchanging a plurality of molds having different patterns in the heat transfer surface so that they can be exchanged (Japanese Patent Application Laid-Open No. 46-4678). No. 3389). But,
In this proposal, because many molds are used in combination,
When the same pattern is used in each region of the heat transfer surface, there is a disadvantage that it takes time and effort. In particular, when calculating the heat conduction coefficient of the plate, if the pattern is partially different, it is necessary to calculate the details of each part, which is troublesome.

The present invention has been proposed in order to improve the above-mentioned drawbacks of the prior art. The purpose of the present invention is to eliminate the troublesome labor and to use one type of mold to improve the physical properties, design conditions, etc. of each medium. An object of the present invention is to provide a method for manufacturing a heat exchanger plate that can be used.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an outer peripheral mold for forming a gasket groove, a distribution surface forming mold for distributing a liquid, a non-rotating state, and a non-rotating state.金 In a mold that is divided into a mold that forms one heat transfer surface portion having a waveform pattern that intersects with the rotated state, the direction of the mold of the heat transfer surface portion is within the mold plane, It is characterized in that it is press-formed while changing between a non-rotating state and a state rotated by 180 °.

[Action]

The pattern of the heat transfer surface differs by 180 ° between the plate pressed with the direction of the mold of the heat transfer surface portion in a non-rotation state and the plate pressed with the mold rotated 180 °.
Therefore, the flow path formed between these two plates is
The waves intersect or intersect, creating turbulence and the medium flow can be evenly distributed throughout the flow path. Also, the intersecting and abutting corrugations cause the plate gap to be retained. In particular, by combining the above two types of plates, which are turned upside down and those which are not inverted, a flow path where the waveforms intersect and a flow path where the waveforms are parallel can be formed.

〔Example〕

FIG. 1 is an exploded plan view of a press die showing an example of the present invention, wherein an outer peripheral die (1) for forming a gasket groove (1a) and a substantially triangular distribution for forming a liquid distribution surface. It is divided into a surface mold (2) and a heat transfer surface mold (3) for forming a heat transfer surface.

For the outer peripheral die (1) and the distribution surface die (2),
FIG. 2 shows a plate (A) obtained by combining and pressing the heat transfer surface portion mold (3) in a non-rotating state. The heat transfer surface portion mold (3) is rotated by 180 ° in the plane of the mold. FIG. 3 shows the plate (B) pressed in combination in the state.

Although the waveform pattern of the heat transfer surface portion mold (3) shows the case of an arrow blade projection shape, it is not limited to this and may be another waveform or a pattern other than the waveform.

As described above, one type of mold shown in FIG.
The two types of plates (A) and (B) shown in FIGS. 3 and 3 can be manufactured.

The above two types of plates (A) and (B) are
As shown in the figure, the layers are laminated in the order of (A ') (A) (B') (B) (A '). In FIG. 4, a plate (A ') is obtained by inverting the plate (A), and a plate (B') is obtained by inverting the plate (B).
In this laminated example, the waveform pattern of the flow path between the plate (A ') and the plate (A) and the waveform pattern of the flow path between the plate (B') and the plate (B) intersect. , Plate (A) and plate (B ')
And the waveform pattern of the flow path between the plate (B) and the plate (A ′) is parallel.

The combination of the two types of plates (A) and (B) and the plates (A ′) and (B ′) obtained by inverting the plates (A) and (B ′) has the gasket groove (1a) having a flow path surrounding pattern of (A), (B) and Since (A ') and (B') are the same, there are four combinations of conditions for laminating these plates and allowing another medium to flow through the flow path between adjacent plates.

(A) and (A ') or (A) and (B') and (B) and (B ') and (B) and (A') In the above combination, (A) and (A ') and In the combination of (B) and (B '), the waveform patterns intersect,
In the combination of (A) and (B ') and the combination of (B) and (A'), the waveform patterns are parallel.

Thus, various heat exchange channels can be configured by one type of mold in the above four combinations.

Of the above four combinations, if contact points are provided at appropriate intervals on one or both of the plates where the waveform patterns are parallel, either by retrofitting or simultaneous molding, 2
The medium flow path can be configured to withstand high pressure. Further, if the plates are combined so that the waveform pattern is parallel to the medium including the slurry, the fibrous material, and the like, clogging can be prevented because there is no contact point, that is, no closed point of the flow path. In this case, if the pressure of the medium flowing in the flow path in which the waveform patterns are parallel to each other is set to be higher than the pressure of the other medium, it is possible to prevent the flow path from being blocked due to the deformed contact of the plate, and to eliminate clogging.

〔The invention's effect〕

According to the present invention, it is possible to obtain a plate-type heat exchanger that can correspond to the physical properties of each medium, design conditions, and the like by using only one type of expensive mold, eliminating troublesome labor, and reducing manufacturing costs. There are advantages that can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded plan view of a press die showing an example of the present invention, FIGS. 2 and 3 are plan views of two types of plates formed by the die of FIG. 1, and FIG. It is a development top view showing the example of lamination of the plate type heat exchanger using two kinds of plates. (1) ... outer peripheral mold, (2) ... distribution surface mold, (3) ... heat transfer surface mold, (1a) ... gasket groove, (A) (B) (A ') ( B ') ...... Plate.

Claims (1)

(57) [Claims] An outer peripheral die for forming a gasket groove; a distribution surface forming die for distributing a liquid;
In a mold that is divided into a mold for molding one heat transfer surface portion having a waveform pattern that intersects with a state rotated by 0 °, the direction of the mold of the heat transfer surface portion is set within the mold plane. Press forming in a non-rotated state and a 180-degree rotated state.