JPS588996A - Manufacture of heat conductive plate in plate type heat exchanger - Google Patents

Abstract

PURPOSE:To enable an easy molding of a flat heat conductive plate without distortion by a method wherein a middle corrugated part, continuous groove on the both sides of the middle corrugated part and outside corrugated parts on the edge are formed by a small scale press with the respective parts and grooves being superposed partially respectively. CONSTITUTION:In a first process, a heat conductive plate material 8 is provided in the middle part with a corrugated part 5 comprising a plurality of rising parts and sinking parts, a straight continuous groove 6 of a certain length on the both sides of the corrugated part 5 for inserting gasket therethrough and a second corrugated part 7 on the both outsides of the grooves 6, the waveshape of which appears on the edge of the plate material 8. The second corrugated part 7 works for improving the flatness and softness of the plate. Thus a part of a convex- concavo pattern is formed. Next, in a second process, the corrugated parts 5 and 7 and continuous grooves 6 formed in the first step are pressed so as to superpose mutually and partially. The second process is repeated several times except in the vicinity of a fluid flow hole 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a 7J method for preparing heat transfer plates for use in plate heat exchangers, which produce 90% warpage and distortion using a small IIO press machine.

= In general, plate heat exchangers have heat transfer plates IKIIi! The liquid flow passage with the R8 square is formed by press working, and the sliding seal is attached to create a structure in which the hot liquid side flow path and the cold liquid side flow path are arranged alternately. 9 stacks like that, damn 2 frames 2
In the meantime, firmly tighten and form the front plate with a bolt.

Plate heat exchangers such as ζO have a much higher heat transfer coefficient than ζO heat exchangers (IIK), are more compact, and can be easily disassembled and reassembled.

However, the pigeon house that press-forms the heat transfer plate, l! 1 It is difficult to form the 9th part, which has many convex patterns. Even if you create only a slight uneven pattern in the center of the 9th part, it will cause deflection, and materials such as 4IK stainless steel and titanium will become hard. As time went on, normal machining became difficult and it became 1mK.

In order to suppress the occurrence of heat distortion, all the uneven patterns of the heat transfer plate must be formed by a strong press.

The power of presses has increased from several thousand tons to tens of thousands of tons, and the equipment costs have increased considerably. ★Since it is impossible to make the press machine O-fist into a large lid, the size of the heat transfer plate F is inevitably limited.

Divide the heat transfer plate into several equal parts.

1 of Hiro and Mourning! ! Although 6 m is formed in 1 press (1 iK) and an is punched, the operation of layering in multiple 1 piece has been set up in 1, but there is still some sagging and distortion, which is not satisfactory as a heat transfer plate. In view of the drawbacks of the present invention, the conventional O
To provide a method for forming heat transfer plate F using a press machine with a small lid of 1/109 to 1/109, even with hard materials such as stainless steel and titanium, without causing warpage or distortion. Heat transfer plate in plate heat exchanger) 0
During molding, apply continuous IpI to the periphery of the heat transfer plate with a deep blue color.

Then, in the inner part, a mountain part and a valley part are connected to form a circular scissor-shaped part.

Assuming that a plurality of the wave-shaped parts of the heat transfer plate and the continuous part of a certain length are considered as one block, the continuous * of the peripheral part * and the scissor-shaped part that corresponds to the inner part are each one block. So that each part overlaps.

Plate type heat exchange INK stone heat transfer plate characterized by stones formed by multiple l1) 0$1 manufacturing method and heat transfer plate 011E type in plate type heat exchanger, scissor bond heat plate Viewed from a high position, there are III and Ti continuous pipes on the periphery, a series of peaks and valleys on the inner side, and a good axillary part (first wavy part) on the outer part of the continuous pipe from 11 to K11m. The technique is heat transfer play) 0 edge 11 appears! The wavy part of the heat transfer plate has a serial number 01! Several and constant *0 The continuous grooves are taken as one boot stock, and the continuous grooves in the peripheral part and the scissor-shaped parts are molded in multiple layers so that each part has a weight of 1. Heat transfer plate in plate heat exchanger) Oall manufacturing method and
Heat Transfer Plate) 991 This is related to the above-mentioned method 2, in which molding of the body flow holes and the uneven portions in the vicinity thereof is performed before and after forming the liquid distributing portion and the continuous groove.

For fins> Low twist, yet causes curvature and distortion t%
fh, Precision 1!01 - It is now possible to manufacture heat transfer plates.

★In order to increase the power of the press machine, ai0Fllll
Compared to the 040, it is able to pass through extremely large heat plates.

Next, the invention will be explained with reference to FIG. 1 IIK.

The heat transfer plate blank shown in Fig. 2 (1) K is shown in Fig. 2 iK.
As shown, 1st process 11KTh and 1 press>, top 1
Leaving the gold base near the 1km body circulation hole 4, glue the multiple scissor-like parts (first wrinkles) in the center from the mountain part and the place part, and -1o the large groove of the gasket on both outsides - wt fear O * - shape ' continuous fR * 4 (H O continuous groove is convex ≦ 1 in fungi) (play on the skin) 0 flat change with china clay 1 prefecture song at-v *-
tゐ'9k At its outer end, #ILj111 appears on the heat transfer plate OII & part 〇-! Because the liquid is completed, a portion of the uneven lateral shape may be expanded.Then, the press IIO lid has a layered shape that allows for cylindrical molding.

Next, as shown in No. 11, in the 112th building, the same pigeonhole was used for the 1st building 11KTh, but the pigeon coop had a different shape, and a different shape was used for the front. In step 11, the nine wavy portions (1st siP and 11[! wavy portions) 8.7
Also, pressing is performed so that the continuous groove 6 has a partial weight of 1.

As shown in 2nd gFk, the ζO design has upper and lower O fluid communication holes 4
Except for the vicinity, the same corrugated part 5.7 and the continuous groove 6 for gasket insertion are required, and the press working is performed by multiple presses so that each part has a weight of 1. This shows the overlapped portion of the dotted 0 portions in Figure 2.

In step 1, step 11, use the WO press, heat transfer plate)
8, distortion occurs during deflection, but 1 pyrotechnic 11,
Scratch this molded part 〇 Since some parts overlap, press it down.
After absorbing the distortion and performing the same pressing process using 1K, 1
First, remove any distortion that may occur without leaving a trace.
t1 An extremely flat heat transfer plate 8 is formed.

In general, when the number of machining operations 11 increases, the distortion that can occur increases by a factor of 2 to a maximum of 1!7, and in the case of multiple layers 11, the distortion is thought to increase by 10 degrees, and 110 is the tatami pass.

However, according to the present invention, the distortion generated in the previous process 1 can be effectively collected in the preprocess 1 to the next process IIO 1, and the distortion that may occur in the subsequent process 1 can be suppressed. I interfered with the heat transfer plate, and in the end, I produced a heat transfer plate with an uneven pattern.

The failure is something that is common sense and cannot be considered by society.〉The F1111, which was originally developed in this application, was the result of intensive research and experimentation, and was finally completed.
In addition, it is difficult to process 0ml, 1ll, and O in multiple stages, so 48 fins are made into a heat transfer plate O, which is unusually complicated! ! I convex 110 is used for molding, and 111 is 4 tons with a groove called Ishi, and the above o main @ o molding oii, m t II vo! 1llllll
l: Punch a fluid flow hole type and insert a gasket insertion groove in the distribution groove near the hole O *0I! ! I am proud of Iku.

Because it has been hardened by K processing, it is the first! In Figure Mao Engineering@, 4 does not encourage the occurrence of medium deflection and medium distortion.

On the other hand, punch the inside of the fluid flow hole and remove it. L40
5. After processing the sock, the first axillary part of the central part is removed. Even if the continuous groove 6 and the fill-shaped II 7 are formed, multiple overlapping molding processes are completed in the same way, and the heat transfer plate s
is formed flat.

Therefore, it becomes difficult to choose which process to perform first, taking into account the ease of molding.

The heat transfer plate was molded so that molding appeared on the edge of the heat transfer plate outside the continuous groove 6. Iwayui number one! wavy may company,
It has the role of effectively eliminating the occurrence of distortion during mourning. As the mat-like shape 7 becomes **sui, its flatness further increases, resulting in flexibility.

Just like this, the press of the small lid produces a central OwL shape (g 1 wavy 11B)! l, (-0 both 11
0m continuous 1114.11 outside @ heat plate $
The second laryngeal shape 7 with the #IL shape appearing on the edge was molded from Fudanen's Presae IIK so that each part was shaped into a weight 1, which was impossible with conventional methods. It is now possible to easily form a flat heat transfer plate.

Premet lid! An example of 5llk: is shown, inside of hi0It() there is a wavy convex part (first wavy @) 11m of heli y pawn m (herringbone pattern) which is divided into multiple parts, and this heli has a single convex shape. Continuous convexity in the shape of a straight line 11 on both sides of the armpits on the longitudinal side
and its outer horizontal wrinkle (second arytenoid Iku 7) M formation convex @<x is the mark.

1st 11O Press 11O press 11O press 1I1O press 1I1O press 1I1IO press 1I1IO press 1I1IO press 1I1IO press 1I1IO press is carried out, and the diagonal line part 1 shows the part where the press is performed in an overlapping manner.

This press ItO 1st m-shaped part company herringbone.

Parallel pull gate, oblique parallel = Lu gate, intermittent wL type.

One for 411, such as petal-shaped.

And importantly, the good heat transfer plate obtained by the heat exchanger can be used in the general plate heat exchanger.
If we have a large 11KL press machine to manufacture fR heat transfer plates at low pressure, we can manufacture even larger trio heat transfer plates.

[Brief explanation of drawings]

The first panel is an exploded perspective view of the play F heat exchanger. No.! figure! No. iv is the theory Wl showing the first step of manufacturing method O of the present invention.
Figure i, Press '1 used in the W140 method from the 1st G1 company
It is 10'F11m. 1...- Heat transfer plate 2... Frame 5... Gasket 4... Distribution hole S ------ First wave song 6...・Vertical groove 7...Second liquid part 9...Press lid 16-...Ikuko Applicant Nippon Mining Co., Ltd. Company representative Patent attorney (75M? ) Keishi Namikawa No. 11

Claims (1)

[Claims] Plate type heat exchange 1) When forming the heat transfer plate, the scissors heat transfer plate) O11 side is viewed from the backing! l
l! A continuous groove on the east side, and a large wavy part with the inner IIK mountain part and buttock connected in series, and a plurality of the liquid parts in the longitudinal direction of the heat transfer plate and the continuous groove of a certain length in one spray ivy. As, said peripheral IIIOml! A method for manufacturing a heat transfer plate (OII) for a plate type heat exchanger, characterized in that molding is performed using a plurality of knees so that the groove and the liquid part in the inner hole partially overlap each other. - Heat transfer plate O formation 1# in plate heat exchanger
In this process, a continuous groove is formed on the periphery of the wrinkled heat transfer plate, which becomes a central strip when viewed from the back, and a liquid part (with continuous peaks and valleys on the inside) is formed.
1st #IL-like part). Furthermore, the continuous groove O outwardly has a corrugated shape extending around the edge of the heat transfer plate.
! ``The direction O front Ile liquid state Ile O multiple sides and a certain length of the so-distributed gun shu are taken as one boots, and the peripheral part O continuous groove and the front Ie wrinkled part are each a plurality of weights 1. A method for producing a heat transfer plate using a plate type heat exchanger, which is characterized by molding in a factory. (2) Heat transfer plate) The molding process of the O8 convex portion and the O8 convex portion in the vicinity thereof is performed using the liquid part. Patent claim I [III
Methods of IL sections 1 and 2.