JPS61231394A - Heat exchanger - Google Patents

Abstract

PURPOSE:To enable a heat exchanger to display its heat-exchanging performance and to be easily manufactured, by a construction wherein a heat exchanger is constituted of a cylindrical casing, a pipe member affixed to the inner periphery of the casing in a substantially wound state, and heat-exchanging plates disposed in the casing with the outer peripheral edges supported in contact with the pipe member. CONSTITUTION:The pipe member 2 is affixed to the inner periphery of the cylindrical casing 1, and a plurality of heat-exchanging plates 3 permeable to fluids are disposed on the inside of the pipe member 2, with the outer peripheral edges 3a thereof supported in contact with the pipe member 2. A high- pressure gas H introduced through an upper high-pressure port 11 flows through a high-pressure passage 17 in the member 2, and is led out through a lower high-pressure port 12. On the other hand, a low-pressure gas L introduced through a lower low-pressure port 13 flows up sequentially through through-holes of the plates 3, and is discharged to the exterior of the casing 1 through the upper low-pressure port 14. The gas L and the gas H exchange heat with each other through the pipe member 2 and the plates 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a heat exchanger that can be suitably used in He liquefaction equipment and the like.

LPrior art 1 In equipment that uses deep cooling, such as a He liquefaction equipment using a Claude cycle, the heat exchanger occupies a large proportion of the equipment volume.Therefore, unless the heat exchanger is made smaller, There was a problem that the entire device could not be made compact. However, simply making the heat exchanger smaller will lead to the inconvenience of lower heat exchange efficiency and increased heat intrusion from the normal temperature range to the low temperature range, so it is not easy to make this type of equipment more compact.・I couldn't do it.

゛By the way, in recent years, as shown in Figure 4, high-voltage path
A so-called laminated heat exchanger is a type in which a frame-shaped heat insulating spacer C having a transparent window a and a transparent window for a low pressure path and a heat exchange plate e having a large number of through holes d are laminated alternately. are being developed and these problems are being solved.

[Problems to be Solved by the Invention] However, in the above-described laminated heat exchanger, if the adhesion or bonding between the heat insulating spacer C and the heat exchange plate (e) is not perfect, gas may flow from the high pressure path f to the low pressure path g. A leak occurs. Therefore, there are restrictions such as assembly having to be performed in a clean room, and manufacturing is not easy.

The present invention was made with the aim of solving these problems, and can exhibit the same performance as conventional laminated heat exchangers, and can be easily manufactured without requiring special equipment. The aim is to provide a heat exchanger that can

Measures to solve the L problem] The present invention aims to achieve such an objective.

The heat exchanger is connected to a cylindrical case and the inner circumference of this case □
A pipe member with good thermal conductivity attached to the pipe in a substantially wrapped state,
A heat exchange plate having fluid permeability is disposed in the case with the outer peripheral edge thereof being contacted and supported by the pipe member, and a high-pressure flow path through which high-pressure fluid passes through the inside of the pipe member. In addition, the space from one end of the case to the other end of the case through each of the heat exchange plates is a low-pressure flow path through which low-pressure fluid passes.

1 Effect] With such a configuration, the high-pressure fluid flowing in the long high-pressure flow path formed in the pipe section and the number of heat exchange plates whose outer peripheries are supported in contact with the pipe member Heat exchange occurs between the low-pressure fluid flowing through it. Therefore, it is possible to exhibit the same performance as a conventional laminated heat exchanger that exchanges heat through a large number of heat exchange plates.

Moreover, since the high-pressure fluid passes through the inside of the pipe member, there is no need for airtightness at the joint surfaces. Further, since the high-pressure flow path does not suddenly expand or contract, fluid can flow smoothly without causing pressure loss in the members.

LEmbodiment J An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, the heat exchanger according to the present invention includes a pipe member 2 attached to the inner circumference of a cylindrical case l, and
A plurality of heat exchange plates 3 having fluid permeability are disposed inside the pipe member 2 so that their outer peripheral edges 3a are in contact with and supported by the pipe member 2. The pipe member 2 is a pressure-resistant pipe made of a material with good thermal conductivity, and is formed into a wrapped state as shown in FIG. 2 and attached to the inner circumference of the case l in an air-tight manner. . To be more specific, this pipe member 2 is
In the figure, a plurality of horizontal windings m4 arranged in parallel at a predetermined interval in the vertical direction, and a plurality of stages 5 that sequentially connect the upper horizontal winding part 4 to the one-stage horizontal winding part 4. Specifically, it is formed by winding a single pressure tube into a spiral shape while deforming it so that predetermined portions in the circumferential direction form steps. The heat exchange plate 3 is disk-shaped with a large number of through holes 6, and is made of a material with good thermal conductivity. This heat exchange plate 3 is fitted onto the inner periphery of the horizontally wound portion 4 of the pipe member 2, and the fitting portion 7 is joined by brazing. Therefore, in this embodiment, each horizontal winding section 4 has three windings.
Heat exchange plates 3 are attached one by one. Incidentally, each of the heat exchange plates 3 is provided with a protrusion f19 inserted into the gap 8 formed between the step portions 5 at the outer peripheral portion thereof.

Also, high pressure ports 11 are provided at the upper and lower ends of the case l.
．． 12 and low pressure port) 13.14.
16 is attached airtight. That is, in this heat exchanger, the inside of the pipe member 2 is a high-pressure passage 17, and the space from one end of the case l through each heat exchange plate 3 to the other end of the case l is a low-pressure passage 18. I am doing it. Thus, each of the high pressure ports 11.12 communicates with the high pressure passage 17, and the low pressure port 13.14 communicates with the low pressure passage 18.

In addition, when manufacturing this heat exchanger, the heat exchange plate 3 is brazed on the inside of the pipe part/material 2 formed into a spiral shape,
After that, it is desirable to cover the outside of the pipe member 2 with the case l.

With such a configuration, for example, the high pressure gas H introduced from the upper high pressure port 11 flows through the high pressure passage 17 in the pipe member 2 and is led out from the lower high pressure port 12. On the other hand, the low-pressure gas L introduced from the lower low-pressure port 13 sequentially passes through the through holes 6 of the heat exchange &3, rises, and is discharged from the upper low-pressure port 14 to the outside of the case l.

Therefore, this low pressure gas L and the high pressure gas H exchange heat via the pipe member 2 and the heat exchange plate 3. However, this one...

The high-pressure gas H is guided into the long high-pressure flow path 17, and the low-pressure gas L is passed through a number of heat exchange plates 3 in sequence and circulated. It is possible to exhibit the same performance as a conventional laminated heat exchanger that performs .

Moreover, since the high-pressure gas H passes through the inside of the pipe member 2, there is no need to partition the high-pressure flow path 17 and the low-pressure flow path 18 at the joint, so airtightness at the joint surface is not required. .

Therefore, consideration such as assembling in a clean room is completely unnecessary, and manufacturing can be facilitated.

Moreover, since the high-pressure channel 17 does not suddenly expand or contract, pressure loss can be kept small. Therefore, it can contribute to improving the system efficiency of the entire device incorporating this heat exchanger.

Note that the shape of the pipe member is of course not limited to that of the above embodiments; for example, it may be formed into a polygonal shape instead of a circle, or a shape as shown in FIG. 3. The pipe member 22 shown in FIG. 3 has a meandering configuration when unfolded.

Further, a heat insulating material may be interposed in the gap between the pipe members, and the cross-sectional shape of the pipe member itself may be made into a shape other than a circle, for example, a square.

In addition, the case is not limited to a simple cylindrical case, for example,
Various modifications are possible, such as providing a recess on the inner periphery to match the shape of the pipe member.

Generally speaking, the heat exchange plate is not limited to the one in the above embodiment.1 For example, in order to improve heat conduction, it may be made into a concave lens shape with a thinner center, or a heat exchange plate may be used instead of providing a through hole. Modifications such as manufacturing the entire plate from porous metal may be considered6.Also, in the above embodiment, a case was explained in which the pipe member and the heat exchange plate were joined by brazing, but the present invention does not necessarily apply to such a case. Of course, the present invention is not limited to this, and for example, the present invention also includes a structure in which the pipe member and the heat exchange plate are connected by welding, diffusion bonding, adhesive, etc., or are completely integrated.

[Effect of the Invention J] Since the present invention has the above configuration, the conventional JiA
Provides an excellent heat exchanger that can exhibit the performance of a layered heat exchanger, etc., and can be easily manufactured without requiring special equipment because airtightness is not required at the #i joint. It is possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. N41 is a partially omitted sectional view, and FIG. 2 is an exploded perspective view. 3IA is an explanatory view for explaining another embodiment of the present invention, and FIG. 4 is a perspective view showing a conventional example. 1st e case 2.22-◆-pipe member 3, sound, heat exchange plate 3a proboscis...outer periphery 6...through hole 1711...high-pressure flow path 18--low-pressure flow path H...high-pressure fluid (High pressure gas) L-Wa φ Low pressure fluid (Low pressure gas)

Claims (1)

[Claims] A cylindrical case, a pipe member with good heat conduction attached to the inner periphery of the case in a substantially wrapped state, and a fluid permeable pipe member disposed inside the case with the outer periphery of the pipe member contacting and supported. and a heat exchange plate having a heat exchange plate, the inside of the pipe member being a high pressure passage through which high pressure fluid passes, and a space from one end of the case to the other end of the case through each of the heat exchange plates being a space for low pressure fluid to pass through. A heat exchanger characterized by having a low-pressure passage through which the heat exchanger passes.