JPH01500292A - Plate heat exchanger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Plate heat exchanger The present invention is arranged between a frame plate and a pressure plate, and a lower support bar The lower support bar and the upper The guide bars on the sides align the recesses in the lower and upper parts of the heat exchanger plate. the upper recess at least at the top of each heat exchange plate. At least one lug is provided extending into the heat exchanger. forming a narrow portion of the recess for retaining the plate in position on the guide bar; This relates to plate heat exchangers.

This type of plate heat exchanger is common on the market. generally desirable A bar of standard cross-section, for example a round bar, is used as both the lower support bar and the upper guide bar. It is used for people. For that reason, the heat exchange plate has both its upper and lower parts. Conventionally, a U-shaped groove is provided on one side. However, the heat exchange plate is plate type. Falling out of engagement with the upper guide bar during assembly or disassembly of the heat exchanger In order to prevent A separate bracket is provided to bridge the upper recess of the plate above the guide bar. It was necessary to attach the cut to the heat exchange plate. Otherwise, the round bar Alternatively, as illustrated in IJS 2252916 and GB 1129924 In addition, specially shaped beads are used in combination with specially shaped recesses in the heat exchanger plates. I had to use the system.

It has been found that the above two construction systems are extremely expensive. Therefore, the heat exchanger To prevent the plate from falling off while resting on the lower support bar, place it on the upper guide bar. There is a demand in the market for another solution to the problem of how to fix the I came.

According to the invention, the solution to the above problem is that the lug inserts the guide bar into the recess. The heat exchange plate is bent perpendicular to the plane of the heat exchange plate to provide an opening for the heat exchange plate. After the exchange plate is attached to the plate heat exchanger, it will spring back. so that each heat exchange plate has sufficient flexibility in the area of said lugs. obtained by a plate heat exchanger of the type defined above, which is characterized by It will be done.

With the invention, the heat exchange plate can be easily integrated between the guide bar and the support bar. Vine. Furthermore, even if the guide bar is an inexpensive round bar, it may have a different cross-section, i.e., a square cross-section. It may be a shaped bar.

Other features of the invention will be explained in more detail below with reference to the accompanying drawings. It is stated in.

The attached FIG. 1 shows a plate-type heat exchanger according to the present invention, and FIGS. Four different fruits of the upper part of the heat exchange plate of the plate heat exchanger according to the invention The embodiment is shown.

In FIG. 1, several heat exchange plates 2. Frame plate 3. and pre A plate heat exchanger l is shown including a isher plate 4. heat exchanger Rate 2 is tightened by bolt 5 between frame plate 3 and pressure plate. It is tightened between 4. Upper guide bar 6 and lower support bar 7 each exchange heat It extends through the top and bottom of the plate. Heat exchange plate 2 is a lower support bar 7 and is supported by it.

In Fig. 2, the heat exchange plate 2A is attached to a guide bar (not shown). a heat exchanger plate provided with a substantially circular recess 8 intended to allow A first embodiment of the upper part of 2A is shown. Recess 8 is the outline of the heat exchange plate It is located inside 9.

The first part 10 of the recess 8 is in the shape of a circle, the center 11 of which is the heat exchanger plate. It is at a distance from the rate contour 9 that is greater than the radius of the circle. Heat exchange plate outline 9 The second part 12 of the recess emanating from and extending into said circle is smaller than the diameter of the circle. It has a wide width. In this way, the two lugs 13 and 14 are attached to the heat exchange plate. are formed on each side of the recessed portion 12.

The recesses 8 are arranged symmetrically on both sides of the longitudinal center line of the heat exchange plate. desirable.

In the above, it was assumed that the recess 8 is substantially circular, but instead of being circular, the recess 8 is It may be oval or any other suitable shape.

In FIG. The upper part of the heat exchange plate 2B differs from that of FIG. 2 by having lugs 15 A second embodiment of is shown.

In Fig. 4, the recess 17 is substantially square, which is different from that in Fig. 2. A third embodiment of the upper part of the heat exchange plate 2C is shown, which is different. recess 17 are arranged oppositely on both sides of the longitudinal centerline of the heat exchange plate. recess 17 may be a rectangle instead of a square.

In FIG. 5, a fourth embodiment of the upper and lower parts of the heat exchanger plate 2D is shown. has been done. At the top, there is a square for the guide bar 6B (indicated by the broken line in the figure) with a circular cross section. There is a groove 18 in the shape or rectangle. on the upper contour of the heat exchange plate 2D. The two lugs 19 and 20 are facing each other, and the distance between them is 1 It is smaller than the distance between the vertical edges 21 and 22 that determine the shape of 8. Ru. The distance between the lugs 19 and 20 is also smaller than the diameter of the circular cross section of the guide bar 6B. Sai.

At the bottom of the heat exchange plate 2D, there is also a support bar with a circular cross section (indicated by a broken line in the figure). There is a U-shaped recess 23 for. The heat exchange plate 2D is supported by this support bar. Supported.

When assembling the heat exchanger plate to the guide bar, these lugs should be rotated in opposite directions. It bends perpendicularly to the surface of the heat exchange plate, allowing for assembly. These rugs are until the distance between them is sufficient to insert the guide bar into the recess. After assembly, these lugs spring back and are bent into a heat exchanger plate. A constriction is formed at the top of the recess to hold the plate in position on the guide bar.

A corresponding groove is provided to hold the heat exchanger plate in position on the support bar. The heat exchange plate may be provided at the bottom of the heat exchange plate, but the heat exchange plate may be provided at the support bar. Therefore, since it is supported, a U-shaped recess would be sufficient.

FIG, 2 FIG, 4 international search report

Claims (1)

[Claims] Placed between the frame plate (3) and pressure plate (4) to support the lower side. Contains several heat exchange plates (2, 2A-D) supported by bars (7). The support bar (7) and the guide pars (6, 6B) on the upper side are connected to the heat exchange plate ( 2. Remove the recesses (8, 16, 17, 18) on the lower and upper parts of 2A-D). extending through each heat exchange plate (2, 2A-D) at least at the top of each heat exchange plate (2, 2A-D). at least one extending into the upper recess (8, 16, 17, 18) lugs (13, 14, 15, 19, 20) are provided, and these lugs to hold the replacement plate (2, 2A to D) in position on the guide bar (6, 6B). In the plate type heat exchanger, the narrow part of the recess is formed. (13, 14, 15, 19, 20) recesses (8, 6B) the guide bar (6, 6B). 16, 17, 18) to provide openings for insertion into the heat exchange plates (2, 18). The heat exchange plate is bent in the direction perpendicular to the plane of the plate heat exchanger (1 ) so that each heat exchange plate (2, 2A to D) have sufficient flexibility in the area of the lugs. A plate heat exchanger featuring: