WO2009057814A1

WO2009057814A1 - Spiral type heat exchanger

Info

Publication number: WO2009057814A1
Application number: PCT/JP2008/070157
Authority: WO
Inventors: Kazuo Araya; Hideyuki Matumoto; Hisao Matumoto
Original assignee: Matumoto Giken Co, Ltd.
Priority date: 2007-11-01
Filing date: 2008-10-29
Publication date: 2009-05-07

Abstract

This aims to provide a spiral heat exchanger having at least two band-shaped heat transfer plates wound spirally. Stud pins are continuously disposed in a shelf shape through a predetermined clearance at a predetermined space from the individual open end edges of the two band-shaped heat transfer plates. A string-shaped gasket is mounted and spirally wound on the stud pins, and is fastened by a cover so that the spiral heat exchanger can be easily manufactured. A string-shaped cleaning member extending along a passage in the longitudinal direction of the band-shaped heat transfer plates is operated to switch the entrance and exit of a fluid so that the string-shaped cleaning member can be freely slid like a long wiper in the axial direction of the spiral, thereby to clean the heat transfer faces of the confronting the band-shaped heat transfer plates. The two band-shaped heat transfer plates are joined to a semicylindrical core cylinder, of which a central core cylinder can be assembled and disassembled, to constitute mutually independent unit members, so that the band-shaped heat transfer plates can be easily manufactured and cleaned. An inverted cup-shaped end plate and reinforcing ribs can be integrally used in the cover or a closed flange, so that not only the closed flange but also the spiral heat exchanger can be reduced in weight.

Description

Description Spiral Heat Exchanger Technical Field

The present invention relates to a spiral heat exchanger configured such that at least two strip-shaped heat transfer plates are wound many times in a spiral manner at a predetermined interval from each other.

Specifically, a stud pin for supporting a lid and / or a string-like gasket to be pressed against the adjacent opening edge is slightly placed on the opening edge of the belt-shaped heat transfer plate. The present invention relates to a spiral heat exchanger characterized in that a predetermined space is provided from the opening edge of the plate, and is provided continuously in a shelf shape with a gap with an adjacent stud pin.

The present invention also relates to a spiral heat exchanger characterized in that a string-like cleaning member is slid and moved on both opposing wall surfaces of the two belt-like heat transfer plates.

Also, the present invention provides a spiral heat exchanger in which the two belt-like heat transfer plates constitute independent unit members, the unit members can be completely divided and separated, and can be easily assembled. About.

In addition, the cylindrical casing and the lid, which is a closed flange that closes the opening edge 3 of the spirally wound belt-shaped heat transfer plate, are integrally used with the ribbed end plate. It relates to a closed flange that has been significantly reduced in weight without reducing the required strength. Background art

As shown in Fig. 1, the spiral heat exchanger is generally a spiral heat exchanger plate 2 and 2 'wound many times in a vortex shape at predetermined intervals. One is The flow path A flows from the outer periphery to the core cylinder E, and the other flow path B flows from the core cylinder E ′ to the outer periphery B ′ as a completely counterflow, and heat exchange is performed.

The sealing method for the opening edge 3 of the belt-like heat transfer plates 2, 2, 2 is as follows.

As shown in Fig. 1, the open edges 3 of the belt-like heat transfer plates 2, 2 and 2 are open in the vertical direction in both the A and B flow paths. By tightening the flange D and the lid flange F, the opening edge 3 in the axial direction is sealed, and two flow paths A, B, which circulate facing each other in a vortex shape are formed.

As shown in FIG. 2, the opening edge 3 of one flow path A is sealed with a sealing material 7 by welding, as shown in FIG. 2 (A), and a closure flange cover (not shown). The opening edge 3 of the other channel B is sealed with a belt-like cover body 21 such as a soft caterpillar as shown in FIG. 2 (B).

In the figure, 8 is a stud pin, 2 2 is a slit, 2 3 is a spacer that ensures the distance between the belt-like heat transfer plates 2, 2.

Since the opening edge 3 in FIG. 2 is wound with a thick metal seal 7 in a vortex shape and then welded 6, it is difficult to completely weld and join.

As a different means, as shown in FIGS. 3 (A) and 3 (B), the opening edge 3 of the belt-like heat transfer plates 2 and 2 ′ is bent in the longitudinal direction with a predetermined interval I, There is a method of sealing by welding 6 so that the overlapped areas are stitched together, but there is also a problem that it is difficult to wind these folded belt-like heat transfer plates in a spiral shape. 9 8 2).

Further, in the spirally wound welding, since the difficulty of welding increases as the thickness of the belt-shaped heat transfer plate 2 decreases, the thickness of the belt-shaped heat transfer plates 2, 2, and 2 increases even if the heat transfer efficiency decreases. It was necessary to use a thick stainless steel plate. In addition, the welded part and the vicinity of the welded part are inherently susceptible to corrosion, and further, stress is concentrated on weak areas due to strain caused by temperature changes during operation and fatigue caused by repeated expansion and contraction, and corrosion and fracture are likely to occur. There is a problem that the whole welded device cannot be used at once due to leakage due to some breakage.

For this reason, the spiral heat exchanger that welds the opening edges 3 of the belt-like heat transfer plates 2 and 2 'cannot be repaired once assembled, that is, it becomes a scrap.

Furthermore, in another conventional spiral heat exchanger, a number of stud pins 8 or distance bars shown in FIG. 3 (C) are used as a spacer for maintaining the interval I between the belt-like heat transfer plates. It was necessary to weld 10 etc. to the belt-like heat transfer plates 2, 2, and so on.

Thus, a distance bar 10 (flat bar) that has a function of increasing the heat exchange rate by providing a turbulent action to the fluid flowing through the flow path by providing a predetermined interval between the two belt-shaped heat transfer plates. It was difficult to wind the belt-shaped heat transfer plate provided with a vortex so that the place was the trunk (Japanese Patent Laid-Open No. 6-2 7 3 0 8 1).

Accordingly, the present inventor has proposed a spiral heat exchanger shown in FIG. 4 as an improvement (Patent No. 4 0 0 2 9 4 4).

In the figure, 12 is a string-like hollow gasket.

However, this also has a problem that it is difficult to wind a stainless steel plate, which is a belt-like heat transfer plate having an opening edge 3 as an L-shaped bent portion 20 in a spiral shape with high accuracy. On the other hand, in addition to spiral heat exchangers, there are many types of heat exchangers such as multi-tube type, plate type, and others for home use and industrial use. Therefore, there is a problem that it is necessary to remove, clean, and regenerate the deposits which reduce the heat conduction and deteriorate the efficiency of the heat exchanger.

The normal cleaning procedure is to first stop the operating equipment and disassemble the heat exchanger. In the multi-tube heat exchanger, first, the lid (end plate) is opened. Many pipes are cleaned by cleaning balls or brushes by rotating them with water pressure, but the outside of the pipe is often left with other deposits, which are removed. To do that, it required more work.

Also, in the plate type heat exchanger that is used next for industrial use, loosen the assembly bolts and nuts around the four turns of the heat transfer plate, disassemble the heat transfer plate one by one, disassemble the gasket, remove the gasket, Open the space between the heat plate and the heat transfer plate, and put a cleaning tool in the gap to clean both sides of the heat transfer plate.

However, spiral heat exchangers that use members such as distance pars and distance pins to maintain a gap between the belt-shaped heat transfer plates have a problem that the members protruding into these flow paths impede cleaning. .

Regardless of the distance bar or the like, the two edges of the thin belt-shaped heat transfer plate are bent and welded as shown in FIG. It was more difficult to clean the inside of the cylinder.

Since the spiral heat exchanger is constructed by winding the strip-shaped heat transfer plate many times in a spiral, the curvature differs at each position, and each wall surface of each strip-shaped heat transfer plate is swept away. It was extremely difficult to regenerate.

Under these difficult conditions, a cross-flow spiral heat exchanger rotates and moves the stick-removing stick-like member suspended in the flow path in the axial direction of the spiral, and cleans only one flow path. There is 1 2 6 6 8 No. 8.

Thus, in a plate heat exchanger, the heat transfer area can be increased freely by sandwiching several to 100 or more heat exchange plates between both flanges. If the container is large (for example, the diameter is lm or more), it is necessary to have a thick closure flange as a cover. This is a JIS (Japanese Industrial Standard) table, for example, (5 k flange, nominal diameter 1 5 0 0, flange thickness 5 It is clear from the view of 8 mm. In other words, this is about 2 tons with just two flanges.

For this reason, in the conventional spiral heat exchanger, the thickness of the closing flange is large, the lid is heavy, and the processing is not easy, so it has been expensive to make a large device.

Furthermore, as shown in FIG. 7, normally, semi-cylindrical cores E and E ′ are provided on both sides of one partition wall 18, and the end portions 24 of the heat transfer plate are fixed thereto. Once assembled, disassembly was difficult.

Disclosure of the invention

The problems to be solved by the present invention are as follows.

(a) In Patent No. 4 0 0 2 9 4 4 already disclosed by the present inventor, as shown in FIG. 4, by providing an L-shaped bent portion 20 at the opening edge 3, It is to make it possible to wind the belt-shaped heat transfer plate that was difficult to wind in a spiral shape as freely as a flat plate.

And it can be easily assembled and disassembled using a string-like gasket or string-like hollow gasket, and the fluid can be sealed hermetically in the axial direction as well as in the circumferential direction. Is to provide an exchanger.

Furthermore, in a spiral heat exchanger where the interval between the belt-like heat transfer plates is wide due to the large size, etc., it is to make it possible to apply a long stud bin safely and easily. It is an object of the present invention to provide a spiral heat exchanger that can easily clean and regenerate both the wall surfaces of the two strip-shaped heat transfer plates while remaining intact and at the same time without disassembly.

(c) To provide a spiral heat exchanger in which the core cylinder is made independent of each partition as a semi-cylindrical core cylinder, which is easy to assemble and disassemble and can be completely disassembled and cleaned. (d) It is possible to reduce the weight of the entire spiral heat exchanger while maintaining the necessary strength of the lid, which is a closing flange.

Figure 5 shows the above problem (a). A stud bin 8 that performs a function corresponding to the L-shaped bent portion 20 of the opening edge shown in FIG. 4 of the belt-like heat transfer plate 2 that supports the string-like gasket 13 is connected to the opening end. The problem can be solved by providing a predetermined gap 5 at a position corresponding to the L-shaped bent portion 20 of the edge and connecting them in a shelf shape. That is, as shown in Fig. 5 (B) and (C), a predetermined margin 14 for the lid F is provided from the opening edge 3 of the belt-like heat transfer plates 2 and 2 'so that the stud bin 8 has a constant gap 5 The strip-shaped heat transfer plates 2, 2 'are connected in a shelf shape in the longitudinal direction.

The stud pins 8 are stud bolts of a predetermined length, thickness and shape, or stud pins are planted by stud welding or the like.

And, as shown in Fig. 5 (A), (B), (C), a string-like gasket 13 is mounted and wound together with the belt-like heat transfer plates 2, 2 'in a vortex shape, or The belt-shaped heat transfer plates 2 and 2 ′ wound in a vortex are inserted into a predetermined position.

In Fig. 5 (A), the gasket 13 is omitted for convenience of explanation. When the stud bins 8 are continuously arranged in a shelf shape with a gap 5 at a constant pitch, the gap 5 becomes a bending element when winding the belt-like heat transfer plates 2 and 2 ′ in a vortex shape. Become.

The present invention is characterized in that this bending element is used when the support member 15 of the shelf-like string-like gasket 13 is provided on the belt-shaped heat transfer plate wound in a spiral shape.

Thus, as shown in FIGS. 5 (A), (B), and (C), the stud pins 8 are connected in a shelf shape, and a string-like gasket 13 is mounted thereon.

When the string-like gasket 13 is supported by this round stud bin 8 and tightened to the lid F, as shown in Fig. 5 (C), the string-like gasket 13 is partially pressed down and clamped. Therefore, there is a possibility that a gap 17 is formed between the lid F and the string-like gasket 13, so that the pressing is not uniform and the sealing effect is insufficient.

Therefore, in the present invention, the stud pin 8 connected in a shelf shape has a stud-like gasket 13 so that the string-like gasket 13 can be maintained parallel to the lid F as shown in FIG. 5 (D). The force of providing a parallel surface portion 16 on at least a part of the pin 8, or a support member 15 having a parallel surface portion 16 having at least one side formed in the stud bin 8 as shown in FIG. Covered.

The parallel surface portion 16 of the stud bin 8 or the support member 15 is arranged on the string-like gasket 13 side as shown in FIGS. 6 (B), (C), (D). 2 ′, a predetermined space 11 is provided from the end surface opening 3 of the 2 ′, and the parallel surface portions 16 are aligned in a line. This line corresponds to the L-shaped bent portion 20 shown in FIG. Thus, as shown in FIGS. 6 (C) and (D), when the string-like gasket 13 is mounted and supported and the outer body flange D is pressed against the lid F, the parallel surface portion 1 of the support member 15 Uniform sealing is obtained when 6 is a continuous parallel surface to the lid F.

That is, the string-like gasket 13 having a sufficient volume due to the tightening allowance 14 shown in FIG. 5 (B) is the parallel surface 1 of the support member 15 arranged in a continuous manner in the upper (lid F) and lower (shelf shape). 6), left (band-shaped heat transfer plate 2), right (band-shaped heat transfer plate 2 ') are filled in the enclosed area, and both the A and B flow paths can be sealed.

Alternatively, the string-like hollow gasket 12 shown in FIG. 4 is mounted and supported, and this is expanded and expanded by hydraulic pressure or the like, and the opening edge 3 is sealed to constitute both the A and B flow paths. You can.

Problem (b) is described below.

To clean and regenerate both wall surfaces of the two wound belt-shaped heat transfer plates, as shown in FIGS. 11 to 13, the string-shaped cleaning member G is The long end P is the inlet A of the fluid A provided at one end 3 4 of the belt-shaped heat transfer plate 2 and the pressure wash water Starting from an intermediate point with the port b, it reaches the other end P of the belt-like heat transfer plate 2 where the outlet A ′ of the fluid A and the outlet b ′ of the pressure washing water are similarly provided. 1 9 is a guide to protect the entrance.

The string-like cleaning member G is swung freely in the axial direction (perpendicular to the longitudinal direction of the belt-like heat transfer plate) by alternately opening and closing the fluid inlets and outlets of the plurality of fluids provided above, It can be swung and cleaned like a long wiper.

That is, as shown in Fig. 12 (A), during normal operation of the spiral heat exchanger, fluid A enters from inlet a, passes through channel A, and is discharged from outlet a '. At this time, the string-like cleaning member G is in the state of sticking to the string-like gasket 13, side in FIG.

In this state, the spiral heat exchanger is operated for a long time.

To remove the adhering material adhering to the opposite wall surfaces of the belt-shaped heat transfer plate 2 and the belt-shaped heat transfer plate 2 ′ that faces the surface of the belt-shaped heat transfer plate 2 ′, it is as follows.

First, the outlet b ′ shown in FIG. 12 (A) is closed, and pressure wash water is injected from the inlet b. Then, the string-like cleaning member G moves upward from the curve L as shown by an arrow K shown in FIG. 12 (B), and becomes as shown in FIG. At this time, the fluid in the channel A is discharged from the entrances a and a ′.

The opposite operation is to change the inlet of the pressure washing water to a and change the direction of Fig. 12 (C) → (B) → (A), so that the string-like cleaning member G returns to the original state through the arrows K,.

The string-like cleaning member G filled between the belt-shaped heat transfer plate 2 and the belt-shaped heat transfer plate 2 ′ slides and moves strongly on the opposing wall surfaces of the belt-shaped heat transfer plates 2 and 2 ′ that are in contact with each other. The attachment can be removed.

(c) And, by assembling each independent semi-cylindrical core cylinder with each partition wall 18, assembly and disassembly becomes easy and complete disassembly and cleaning can be performed.

In the case of a lid that is a closed flange with respect to (d), the prosthetic end plate is attached to the reinforcing rib. Can be used together with a large weight to reduce the weight and cost of a large closing flange.

FIG. 1 is a longitudinal sectional view in which a part of a conventional spiral heat exchanger is omitted. Fig. 2 (A) is a cross-sectional view of a conventional example, in which a strip cover is combined with a sealing material.

FIG. 2 (B) is a perspective view of the belt-like cover body.

Fig. 3 (A) is a conventional example, and is an enlarged cross-sectional view of a main part in which one opening edge is bent at an obtuse angle. Fig. 3 (B) is an enlarged cross-sectional view of the main part of one opening edge bent at a right angle.

FIG. 3 (C) is a perspective view showing a heat transfer plate of Japanese Patent Application Laid-Open No. Hei 6-2 7 30 8 1.

FIG. 4 is an explanatory view of the opening edge bent in an L shape in the example of Japanese Patent No. 4 0 2 9 4 4.

FIG. 5 is an explanatory diagram of the first embodiment, and FIG. 5A is an explanatory diagram of an example in which the stud pins of the first embodiment are arranged in a shelf shape.

(B) is a vertical cross-sectional side view taken along the line A-A in Fig. 6 (B). (C) is an explanatory view of part of Fig. 6 (C) together with the stringed gasket 13 and the lid F viewed from the front. It is. (D) and (E) are explanatory views showing other shapes of the stud pin 8.

FIG. 6 is an explanatory view of the second embodiment. (A) is a bearing member 1 having a bowl-shaped cross section of the second embodiment.

FIG. (B) is an explanatory diagram in which the support member 15 having a bowl-shaped cross section of Example 2 is connected in a shelf shape, and the tightening margin 14 of the string-like gasket 13 is omitted.

(C) is a vertical cross-sectional side view taken along the line A—A in which lid F is combined with FIG. 6 (B). (D) is a vertical cross-sectional side view taken along line AA in FIG. 6 (C).

FIG. 7 is an explanatory diagram of Examples 1, 2, 8 and Example 9. FIG. 8 (A) is an explanatory diagram of the folding cradle 20 of the third embodiment. (B) is a longitudinal sectional view taken along line AA in FIG.

FIG. 9 is an explanatory view of the pin cradle 26 of the third embodiment, and (A) is a vertical side view taken along the line AA of FIG. 9 (B). (B) is a vertical cross-sectional side view taken along line AA in FIG. 9 (A).

FIGS. 10 (A) and (B) are explanatory views showing a mode in which the heat exchange fluids A and B of Example 4 are orthogonal to each other. FIG. 10 (B) is a cross-sectional view of the porous plate 37 and FIG. FIG. 5 is a vertical side view of the AA line combined with a bowl-shaped lid body 3 6.

FIG. 11 is an explanatory diagram of the sixth embodiment.

FIG. 12 (A) is an explanatory view showing Example 6 in an expanded manner. FIG. 12 (B) shows the string-like cleaning member G forward path of Example 6, and FIG. 12. (C) is an explanatory view showing the return path developed.

FIG. 13 is an explanatory diagram showing Example 7 in an expanded manner.

FIG. 14 (i) is an explanatory view of Example 9, and (mouth) and (c) are explanatory views of FIG. 14 (i).

FIG. 15 is an explanatory view of the lid body F of the closing flange in Example 10 and (i) is a plan view. (Mouth) is a vertical side view taken along line AA in Fig. 15 (i), and (C) is a perspective explanatory view of the reinforcing rib. Explanation of symbols

A. Flow path

B. Flow path

C. Enclosure

D. Body flange

E. Core tube

F. Lid G. String cleaning member

H. Wire

I. Interval

J. Partition

K. Arrow

L. Curve

M. Wedge

N. Wedge holder

◦. One end

P. end

Q. Material

P. end

T. Flange thickness

a. Entrance

b. Doorway

t. Case thickness

1. Spiral heat exchanger

2. Strip heat transfer plate

3. Open edge

4. Plate gasket

5. Clearance

6. Welding

7. Sealing material

8. Stud pins

9. Mortarboard 1 0. Distance bar

1 1. Space

1 2. Stringed hollow gasket

1 3. Stringed gasket

1 4.

1 5. Bearing member

1 6. Parallel surface

1 7. Air gap

1 8. Bulkhead

1 9 Guide

2 0. L-shaped bend

2 1. Strip cover

2 2 .Slit

2 3. Spacer

2 4. Edge

2 5.

2 6. Pin holder

2 7. Spider lid

2 8. Folding cradle

2 9. Annular flange

3 0. Spline

3 1. Through hole

3 2. Missing

3 3. Edge

3 4. —End 3 5. Reinforcing rib

3 6.

3 7. Joint surface

3 8. Top plate

3 9, cover plate

4 0. Honeycomb Industrial Applicability

The spiral heat exchanger according to the present invention is widely used not only for household use but also for food machinery, chemical plants, nuclear power generation, ocean thermal power generation and other various industries, and is used to regenerate, recover, and / or heat energy. Among the various heat exchangers indispensable for circulation, it exhibits the best performance in terms of heat transfer between fluids with a small temperature difference. At the same time, it has the smallest volume and the materials such as heat transfer plates to be used are the smallest. It becomes a heat exchanger that requires less, and contributes greatly to measures to prevent global warming.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described based on the following Examples 1 to 10.

[Example 1]

As shown in Fig. 6 (B), the belt-like heat transfer plates 2 and 2 'are each a predetermined space 1 in which the string-like gasket 1 3 is mounted slightly inward from the opening edge 3 on both axial sides. 1 is placed, the specified gap 5 is provided, and the stud bins 8 are planted continuously by stud welding in the form of a row shelf.

The stud bin 8 is covered with a support member 15 having a parallel surface portion 16 on one side as shown in FIG. 6 (A). FIGS. 6 (A), (B), (C), (D ), Parallel plane portions 16 are arranged side by side.

As shown in FIG. 7, the end portions 24 of the belt-like heat transfer plates 2 and 2 'have a core provided with a step. It is welded to a part of cylinders E and E '. .

The semicircular arc tube E and the core tube E ′ are configured so as to be shifted by the interval I (string-like gasket 13) between the strip-shaped heat transfer plates 2 and 2 to be applied one by one via the partition wall 18. Each time the belt-like heat transfer plates 2, 2 and half are half-turned each other, the belt-like heat transfer plates 2 and 2 are smoothly stepped on and wound in a spiral shape. A road is constructed.

That is, the flow path A enters from the outer cylinder, is wound in a spiral shape toward the core cylinder, passes through the through hole 3 1, and reaches A, surrounded by the partition wall 18 and the core cylinder E.

Channel B passes through hole 31 and leads to B surrounded by partition wall 18 and core tube E ′. The string-like gasket 13 is connected to the opposite side of the band-shaped heat transfer plate 2 at the beginning and end of the band-shaped heat transfer plate, and is connected to the opposite side.

When the one shown in FIG. 7 is wrapped in the casing C shown in FIG. 6 (C) and tightened in the axial direction with the body flange D and the lid F, the string-like gasket 1 3 has a tightening margin of 14 Compressed by the belt-like heat transfer plates 2 and 2 ′ and the support members 15 connected to these in a shelf shape, and in the meantime, they are in close contact with the surfaces that are in contact with each other and are vertically and horizontally contacted. It becomes a spiral heat exchanger.

[Example 2]

This embodiment is applied when the distance between the belt-shaped heat transfer plate 2 and the belt-shaped heat transfer plate 2 ′ is large.

That is, when the interval is large, the length of the stud pin 8 is naturally long. If the stud pin 8 used here is thickened, naturally the corresponding strip-shaped heat transfer plates 2 and 2 'must also be thickened. If the welding of the stud pin 8 is weak, the stud pin 8 is easily peeled off from the belt-shaped heat transfer plate, and if it is strong, the welded portion of the belt-shaped heat transfer plate is deformed to displace and move the stud pin 8 and leak from here. May occur. Therefore, in this embodiment, as shown in FIGS. 8 (A) and (B), one end of the stud bin 8 and / or the supporting member 15 which are connected to the belt-like heat transfer plate 2 in a shelf shape by welding. The other end 3 4 is spirally wound at the same time, and is supported by a folding cradle 2 0 ′ provided on another belt-like heat transfer plate 2 that is in contact with each other. Since this bent pedestal 20 'may be a little in the diametrical direction (about 1 to 5mm), it does not provide much resistance to winding the belt-like heat transfer plate in a spiral shape.

Thus, the stud pin 8 which was in a cantilever state by welding the belt-like heat transfer plates 2 and 2 ′ having a large interval on one side, becomes a bridge (B ridge) supported on both sides, and is a thin stud pin. 8 can also be used with thin strip-shaped heat transfer plates 2, 2 '.

In this embodiment, as shown in FIG. 8 and FIG. 9, the stud bin or the support member 15 is suitable for the contact between the parallel surface portion 16 that receives the string-like gasket and the bent support 20 '. It has a prismatic shape.

[Example 3]

In this embodiment, a pin holder 26 is provided in place of the bending holder 20 of the second embodiment. As shown in Fig. 9 (A) and (B), a pin holder 26 is connected to one side of the belt-like heat transfer plate 2 in a shelf shape, and a support member 15 is provided in a shelf shape on the other side. It is connected to. Thus, the other end 3 4 of the support member 15 is supported by a pin support 26 provided on the belt-shaped heat transfer plate 2.

As in the second embodiment, the belt-like heat transfer plates 2 and 2 ′ are combined and wound in a spiral shape.

As for the pin stand 26 used here, it is desirable that the parallel surface shape 16 is continuously arranged in a shelf shape like the support member.

[Example 4]

This embodiment is shown in FIGS. 10 (A) and (B). The flow path A is configured by mounting a string-like gasket 13 on a support member 15 connected in a shelf shape as in Examples 1 to 3. It winds in a spiral and becomes a flow in the circumferential direction.

On the other hand, the opening edge 3 on the channel B side is a state in which the stud bins 8 are connected in a shelf shape with a gap 5 and are opened in the axial direction. Then, the fluid in the channel B flows in a direction perpendicular to the fluid in the channel A, that is, in the axial direction, and is heat-exchanged.

At this time, the lid F that holds the opening edge 3 is preferably a porous plate such as a honeycomb plate or a net plate. The saddle-like lid 27 that encloses these is indicated by a dotted line.

If the string-like gasket 13 used here is the string-like hollow gasket 12, the lid F can be omitted.

[Example 5]

In this embodiment, a belt-like heat transfer plate having at least one surface laminated with a fluororesin film sheet is used.

As a pretreatment for planting the stud pins on the surface laminated with the fluororesin film sheet, the stud pins of the belt-shaped heat transfer plate are pre-determined to ensure that the belt-shaped heat transfer plate is stud welded with the stud bin. The coating at the position (electrical insulator) is removed in advance.

Then, a support member 15 covered with a fluororesin is put on a stud bin planted by stud welding.

Thus, the respective films are welded and bonded, and the removed portion of the film and the covering of the support member 15 are repaired and integrated, so that a spiral heat exchanger laminated with a fluororesin film sheet is obtained.

In the above description, the belt-shaped heat transfer plate is laminated with a fluororesin film sheet, but it goes without saying that the combination is not limited to this.

In other words, not only metal plates and plastic seeds, but also combinations of metal plates and metal plates that can be stud welded are natural. In addition, the stud pin 8 and the support member 15 are not only round, but also have a saddle-like cross section shown in FIGS. 7 (A) to (D), a square shape shown in FIG. The shape of the parallel plane is not limited to the embodiment as long as the non-uniformity of the pressing is suppressed, and the shape, line, strip, unevenness, pattern, etc., the surface state, etc. can be freely set.

As shown in FIGS. 5 (D) and 5 (E), the stud bin 8 that covers the support member 15 can be provided with a spline 30 as required. This non-round spline 30 can be used for applications in which the support member 15 does not rotate relative to the stud bin 8.

[Example 6]

In this embodiment, a string-like cleaning member G having a cleaning function is applied to Japanese Patent Application No. 2 0 0 7-2 8 5 2 4 5.

That is, as shown in FIG. 11, a string-like gasket 13 supported by a connected stud bin 8 flows on the opening edge 3 of the belt-like heat transfer plates 2, 2, of the spiral heat exchanger 1. Channel A and channel B are configured.

As shown in FIG. 11, the core tube E of the spiral heat exchanger 1 of this embodiment is provided with a fluid inlet / outlet a and an inlet / outlet b, and the outer side of the belt-shaped heat transfer plate 2 is opened. The string-like gaskets 1 3, 1 3, are wound in a spiral shape along the edge 3 of the mouth, and installed around the core E and / or the case C from the opening edge 3 to the endless. FIG. 12 (A) shows the flow path A with a string-like cleaning member G built therein. The embodiments of the string-like cleaning member G of the present invention are shown in FIGS. 12 (A), (B), and (C).

As shown in Fig. 1 (2) (A), (B), and (C), the string-like greening member G has an end P at the intermediate point between the fluid inlet / outlet a and the inlet / outlet b. Along the inner edge of the opening edge 3, the other end P, whose intermediate point is between the entrances a and b, is reached.

These fluid inlets and outlets a and b, and fluid inlets and outlets a and b ' Can be operated with a valve (not shown). This string-like cleaning member G is long enough to meander on the way. In the figure, 19 is a guide.

The operation of the string-like cleaning member G in this example is as follows.

① Normal operation as a spiral heat exchanger is performed in the state shown in Fig. 12 (A).

That is, the fluid for heat exchange enters from the inlet a, passes through the flow path A, and exits from the outlet a ′. Therefore, the apertures a and a 'are provided with the normal operation diameter.

On the other hand, the diameters of the entrances b and b ′ can be small because they only inject high-pressure washing water.

② The first cleaning process (outward) is shown in Fig. 12 (A). First, the inlet / outlet a and the inlet / outlet a ′ are opened, the inlet / outlet b ′ is closed, and high-pressure washing water is injected from the inlet b into the channel A ′. Then, the string-like cleaning member G leaves the string-like gasket 1 3 ′ by the pressure of the high-pressure washing water and moves while curving L in the direction of arrow K shown in FIG. 1 (B). As shown in (C), it is in close contact with the string-like gasket 13. At this time, the heat exchange fluid filled in the flow path A to the string gasket 1 3 sealing both wall surfaces of the opposed strip-shaped heat transfer plates 2 and 2 ′ and the opening edge 3 is It is discharged through the previously opened doors a and a '. Thus, the entire area of the channel A ′ is occupied by high-pressure washing water.

(3) In the second cleaning process (return path), firstly, the inlets and outlets b and b ′ are opened, the inlet and outlet a ′ are closed, and high-pressure washing water is injected into the channel A from the inlet and outlet a. Then, the string-like cleaning member G is separated from the string-like gasket 13 by the pressure of the high-pressure washing water and is shown in Fig. 1 2

(C) slides in the direction of the arrow K 'in the direction of the arrow G' while curving as shown by the dotted line G '.

1 Return to Fig. 2 (A). At this time, the washing water in the first step (outward path) filled in the flow path A ′ is discharged from the entrance / exit b and / or the entrance / exit b ′ opened in advance.

Thus, the entire area of the channel A is occupied by the washing water of the second process (return path). The above outbound and return routes are repeated as necessary.

It is free to change the pressure of the high pressure washing water, pulsation, meandering, sliding movement of the same part.

The string-like cleaning member G used in this example is a fluoro rubber having a flexible X-shaped cross section, excellent in heat resistance and corrosion resistance, as shown in Fig. 11. The wire H is wrapped around the core, The tip of the X-shaped fluororubber is pointed.

Therefore, the string-like cleaning member G is free to bend and freely follows the uneven continuous arcs of the belt-like heat transfer plates 2 and 2 ′ wound in a spiral shape, deformed and moved from behind. It does not leak the high-pressure washing water that is received, and the strip-shaped heat transfer plate that scrapes off and removes the deposits on the wall surfaces of the strip-shaped heat transfer plates 2, 2 with the sharp tip of the X-shaped fluororubber is not cleaned and regenerated. Is done.

In other words, the string-like cleaning member G is suitable for removing the adhering matter by sliding and moving on the opposite wall surfaces of the belt-like heat transfer plate, and is widened so as to be easily subjected to the pressure of the high-pressure washing water. As long as at least a part of it has a wiper-shaped tip and both the forward and backward movements of the string-like cleaning member are in close contact with both wall surfaces of the belt-like heat transfer plates 2 and 2 ' Applicable.

However, it goes without saying that the material, structure, cross-sectional shape and the like of the string-like cleaning member G are not limited to this example.

[Example 7]

In this example, two string-like cleaning members G of Example 6 are used.

As shown in Fig. 13, the strip-shaped heat transfer plates 2 and 2 'of the spiral heat exchanger 1 are connected to the partition pins (dotted lines) that also serve as distance bars in a shelf-like manner. It is

In the example of the present invention, the pressure washing water inlet / outlet a.b.a'.b, increases, but the moving distance of the string-like cleaning member G decreases to 1Z2. Therefore, the opposite strips It is good when the distance between both wall surfaces of the heat plate, that is, when the gap is narrow, or when the casing (body cylinder) is long, or when the curvature is small. As a result, the heat resistance is improved with a thin heat transfer plate.

Of course, the partition J may be a stud bin arranged in a shelf shape of the present invention, and the number and shape of the partitions J are not limited. No need to apply string-like cleaning member G.

[Example 8]

An example of this is shown in FIG. A flat bar 25 corresponding to the bending of the trunk portion is detachably inserted into and attached to the stud bins 8 and 8 ′ planted in advance on the trunk portion of the belt-shaped heat transfer plate 2.

Therefore, a notch 3 2 is provided on one side of the flat par 2 5 inserted into the two stud pins 8, 8. This plug-in is easy to attach and detach because it may be a little rattle.

The fluff bar 25 can also function as a distance bar 10 that defines the interval I, and at the same time, can freely set the agitation of the fluid in the flow path and the flow path change.

The mounting method of the stud pins 8, 8 'and the flat bar 25 is not limited to this example.

[Example 9]

Examples of this are shown in Figs. 11 and 14.

FIG. 14 (i) is an explanatory view of a spiral heat exchanger assembled with a casing and a belt-like heat transfer plate on a separable core cylinder of the present invention.

In other words, Fig. 14 (i) can be broken down into (mouth) and (c).

Then, the wedge M of the semi-cylindrical core E 'of (c) prepared separately is wedge-received to the wedge receiver N provided in the partition wall 18 of the semi-cylindrical core E of Fig. 14 (mouth). When integrated, the spiral heat exchanger shown in Fig. 14 (i) is obtained. That is, as shown in FIGS. 7 and 11, the stud pins 8 are connected in a shelf shape, and the string-like gasket 13 mounted on the stud pins 8 is formed of the belt-like heat transfer plate as shown in FIG. Sealing is achieved by turning the edge around the endless.

In this example, a wedge and a wedge receiver are used to integrate the semi-cylindrical core tube, but it is needless to say that other fittings, screwing, and the like can be applied without being limited thereto. That is, a thin heat transfer plate can be used.

[Example 10]

In this example, the spiral heat exchanger can be made lighter and larger. That is, Fig. 15 (A) is a combination of a prosthetic end plate 9 with a lid F and an annular flange 29, and into the lumen 36 as shown in (B), the reinforcement shown in (C) A large number of ribs 35 are arranged radially, and these are integrated by welding at their contact points or lines. In this embodiment, the lid F, which is a closing flange, is placed on a stud pin 8 disposed on the opening edge 3 of the belt-like heat transfer plates 2 and 2 ′ as shown in FIG. 15 (B). The strip-shaped heat transfer plates 2, 2 and the like, which are formed by being wound in a spiral manner at a predetermined interval I by the string-like gaskets 13 and / or the string-like hollow gaskets 1 2 are collected. The open edge 3 of the cylindrical housing C can be sealed.

In this example, it is explained that the reinforcing ribs 35 are radially arranged in the lumens 36 of the end plate 9. However, the present invention is not limited to this. Anything is acceptable as long as it is provided on the body.

After the reinforcing rib 35 is fixed to the lumen 36 of the prone-shaped end plate 9, the joint surface 37 with the lid F is finished as a predetermined plane. This finishing process does not have to depend on a huge lathe.

In other words, the finished surface is the joining surface 3 7 of the thin plate-like reinforcing ribs 3 5. For example, after the reinforcing ribs 35 are fixed to the lumens 36 of the prone-shaped end plate 9, the prone-type end plate 9 can be rotated and easily grinded with a grinder or the like. Therefore, any lid F can be processed with little effort, and correction is also easy.

The lid F, which is the closing flange shown in Fig. 15 (B) and (C), may be a single plate. In this example, however, the honeycomb sand of the upper plate 38, the lid plate 39, and the honeycomb 40 It consisted of a touch panel.

Claims

Claim: A spiral heat exchanger comprising at least two elongated belt-like heat transfer plates wound in a spiral shape at a predetermined interval from each other, the open end of the belt-like heat transfer plate A space for accommodating the string-like gasket to be pressed against the lid is provided slightly inside the edge, and the stud bins are connected in a shelf shape with a gap, and the string-like gasket is mounted and supported on this. Spiral heat exchanger characterized by that. In order to uniformly press the string-like gasket against the lid body, at least one side of the stud bin is configured to be parallel and / or at least one side is parallel to the stud pin. The spiral heat exchanger according to claim 1, characterized in that it is covered with a support member configured in a planar shape. The other end of the stud bin and / or the support member, which is connected to the belt-shaped heat transfer plate in the form of a shelf, is wound in a vortex shape at the same time, if necessary. The spiral heat exchanger according to claim 1 or 2, characterized in that it is supported by a cradle provided on the heat transfer plate. At least two long belt-like heat transfer plates are mutually connected. The spiral heat exchanger configured to be wound in a spiral shape with a gap between the studs, wherein the stud bin is provided with a spline as required. A spiral heat exchanger according to any one of the above. A spiral heat exchanger constructed by winding at least two long belt-shaped heat transfer plates in a vortex shape at a predetermined interval from each other. A string-like gasket is mounted on the support member provided continuously, a stud bin with a gap at the opening edge is continuously provided in the B channel, and the B channel is perpendicular to the A channel. A channel is swirl The spiral heat exchanger according to any one of claims 1 to 4, wherein the B channel flows in an axial direction with respect to the coiled winding. One or more sets of fluid inlets and / or outlets are provided at one end of the flow path of the belt-shaped heat transfer plate, respectively, and the belt-shaped heat transfer is longitudinally cut in the longitudinal direction between the inlet and / or the outlet. By fixing the end of the string-like cleaning member that is longer than the plate and opening and closing the inlet and / or the outlet, the middle part of the string-like cleaning member can be freely moved in the axial direction (the longitudinal direction of the belt-like heat transfer plate). The spiral heat exchanger according to any one of claims 1 to 5, wherein the spiral-type heat exchanger is swung in a direction perpendicular to a long direction and moved like a long wiper. The flow path was divided into at least two by a stud bin connected in a shelf shape in the longitudinal direction of the belt-shaped heat transfer plate, and a corresponding entrance and exit, and a string-like cleaning member was provided if necessary. The spiral heat exchanger according to any one of claims 1 to 6, wherein The string-shaped cleaning member for cleaning the flow path of the spiral heat exchanger is preferably a flexible string material in a flexible string-shaped material such as rubber having an X-shaped cross section. The spiral heat exchanger according to claim 6 or 7, characterized by wrapping a core material such as the above. The semi-cylindrical core E is a single unit, with a semi-cylindrical core E, which is a separately prepared semi-cylindrical core E, fitted to a wedge receiver N provided on the partition wall E. Spiral heat exchanger characterized in that it can be disassembled as a member. A prone-shaped end plate is provided on the outside of the lid, is inscribed in the lumen of the prone-type end plate, and a plurality of reinforcing ribs are interposed between the ear plate and at least the cover plate. With the end plate A spiral heat exchanger having a closed flange of a heat exchanger characterized by being integrally joined