JP2003130571A - Stacked heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stacked heat exchanger having high performance and compact size. SOLUTION: Rectangular and corrugated crest rows 4 and trough rows 5 are alternately arranged side by side in a line on one sheet polygonal heat transfer plate having heat transfer property. The heat transfer plates are stacked in multi-layer so that two independent systems of fluid passages 10, 11 are alternately arranged in the same direction in the direction perpendicular to the stacking direction by the mutual crest rows 4 and the mutual trough rows 5, thereby constituting a polyhedron in which the inflow and outflow parts 8 of the two systems of the fluid passages 10, 11 respectively face to individual faces. In this arrangement, a primary fluid A and a secondary fluid B are let flow in the opposite directions through two systems of fluid passages 10, 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchanger for exchanging heat between fluids.

[0002]

2. Description of the Related Art For example, as heat exchangers for exchanging heat between gases, those disclosed in JP-B-47-19990 and JP-B-51-2131 are widely adopted. There is. Each of these has a basic structure in which a partition plate having heat conductivity and moisture permeability (which may have only heat conductivity) is superposed in a plurality of layers at predetermined intervals with a space plate interposed therebetween. ing. The partition plate is a rectangular flat plate, and the spacing plate is a corrugated plate with a sawtooth or sinusoidal waveform whose projection plane matches the partition plate. The fluid passages, which are sandwiched 90 degrees apart and pass the primary air stream and the secondary air stream, are alternately formed between these layers. As for the spacing plate, there is one that is made of plastic ribs.

In the heat exchanger having the above-mentioned structure, the primary air flow and the secondary air flow are electrically connected to the fluid passages of two systems which are alternately formed for each layer and are independent from each other, so that the primary air flow and the secondary air flow are separated from each other. Thus, the temperature and humidity of each of the air streams are exchanged simultaneously and continuously. And Shokoku Sho 5
JP-A-1-42334, JP-B-62-35596, JP-A-6-109395 and JP-A-6-39595.
As disclosed in Japanese Patent Laid-Open No. 123579, many innovations have been made regarding a partition plate that is a main component of the heat exchange function.
Technological innovation has advanced to the point where high heat exchange efficiency can be obtained,
It makes a major contribution in the air conditioning field.

[0004]

However, there is still a strong demand for miniaturization and high performance of the air conditioner, and further improvement of the heat exchange efficiency of the heat exchanger has been a problem based on the demand. Many measures have been taken to improve the heat exchange efficiency, such as improving the materials of partition plates and spacing plates and making them thinner. However, since the heat exchanger as described above originally has a simple basic structure and already has a considerably high degree of technical perfection, the above problems are no longer achieved in the direction of improving the material of the partition plate and reducing the wall thickness. It's difficult.

The present invention has been made in order to overcome the problems relating to the heat exchanger described above, and an object thereof is to obtain a high performance and compact laminated heat exchanger. It is to improve the performance and recyclability of the heat exchanger.

[0006]

In order to achieve the above object, the invention of claim 1 forms a polygonal heat transfer plate having heat transfer properties in which peak rows and valley rows are alternately arranged in parallel, The heat transfer plates are stacked so that the two independent fluid passages in the crest rows and the trough rows are alternately arranged in the same direction in the direction orthogonal to the stacking direction, and the inflow and outflow portions of the two system fluid passages are formed. Means for constructing a polyhedron that faces each individual surface is adopted.

In order to achieve the above object, the invention of claim 2 forms a polygonal heat transfer plate having heat transfer properties by alternately arranging peak rows and valley rows in parallel. Mountain peaks and peaks,
With the bottoms of the valley rows facing each other, the two rows of fluid passages, which are independent from each other in the mountain rows and the mountain rows, and in the valley rows and the valley rows, are laminated so that they are alternately arranged in the same direction. A means for forming a polyhedron in which the inflow and outflow portions of the fluid passage face respective individual surfaces is adopted.

In order to achieve the above-mentioned object, the invention of claim 3 makes each inflow part of the fluid passage of two systems in one of the means according to claim 1 or 2 face one surface, and each outflow part. Adopt a means to face the two surfaces that separate.

In order to achieve the above object, the invention of claim 4 is such that the heat transfer plates in the means according to any one of claims 1 to 3 are opposed to each other in a row direction of a mountain row and a valley row. A means for forming a modified hexagonal projection plane shape in which the four sides of the two sets are inserted in a dogleg inside.

In order to achieve the above-mentioned object, the invention of claim 5 relates to the heat transfer plate in the means according to any one of claims 1 to 4, except for the edges which are the inflow and outflow parts. A means for providing a side wall with a height substantially equal to the height of the mountain row is adopted at the edge.

In order to achieve the above object, the invention of claim 6 employs a means for providing a rectifying structure between the mountain row of the heat transfer plate and the inflow / outflow portion in the means according to claim 5.

In order to achieve the above object, the invention of claim 7 provides guide means projecting in a mountain shape on the side wall adjacent to the inflow / outflow portion of the heat transfer plate in the means according to claim 5 or claim 6. Adopt means to be provided.

In order to achieve the above object, the invention of claim 8 employs a means for forming an end of the mountain row of the heat transfer plate in a sloped structure in the means according to any one of claims 1 to 7. .

In order to achieve the above object, the invention of claim 9 employs a means for forming each constituent member of the means according to any one of claims 1 to 8 from a single material.

In order to achieve the above object, the invention of claim 10 forms a polygonal cross-sectional shape of the peak rows and valley rows of the heat transfer plate in the means according to any one of claims 1 to 9. Adopt the means to do.

In order to achieve the above object, the invention of claim 11 forms corrugated cross-sectional shapes of the peak rows and valley rows of the heat transfer plate in the means according to any one of claims 1 to 10. Adopt means.

In order to achieve the above-mentioned object, the invention of claim 12 provides a primary fluid and a secondary fluid in opposite directions in the fluid passages of two systems in the means according to any one of claims 1 to 11. Adopt means of distribution.

In order to achieve the above object, a thirteenth aspect of the present invention provides a primary fluid and a secondary fluid in the same direction in the two system fluid passages in the means according to any one of the first to eleventh aspects. Adopt means of distribution.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. The present embodiment shown in FIGS. 1 and 2 relates to a laminated heat exchanger for exchanging heat between fluids. The octahedral stacked heat exchanger 1 shown by the perspective view of FIG. 1 is obtained by stacking two kinds of stacked modules 2 and 3 having different open portions in a layered manner at every other stage. The laminated modules 2 and 3 are composed of thin-walled heat transfer plates having a heat transfer property in a hexagonal projection plane shape. Between the two parallel sides of the laminated modules 2 and 3, the mountain rows 4 and the valley rows 5 are alternately formed in parallel to each other in a spline shape. Both end portions in the longitudinal direction of each mountain row 4 have an end structure 6 having a conical slope surface configuration, and the back surface of each mountain row 4 is a linear depression.

Two parallel sides adjacent to the two parallel sides of the mountain row 4 and the valley row 5 of the laminated modules 2 and 3 are opened as fluid inflow / outflow portions 8, and the height dimension of the mountain row 4 is formed on the other side. A side wall 9 having a vertical dimension substantially equal to The depression on the back surface of the mountain row 4 serves as the fluid passage 10 of one system, and the valley row 5 remains as it is and the fluid passage 11 of the other system. A guide portion 12 has a planar structure between the inflow / outflow portions 8 of the fluid passages 10 and 11 of the two systems. Two kinds of laminated module 2,
3 are stacked so that the two independent fluid passages 10 and 11 in the crest rows 4 and the trough rows 5 are alternately arranged in the same direction in a direction orthogonal to the stacking direction. By mounting the rectangular lid plate 13, the laminated heat exchanger 1 as shown in FIG. 1 is configured. The compressive strength of the laminated heat exchanger 1 is retained by the side walls 9 of the laminated modules 2 and 3.

The four faces of the inflow / outflow portions 8 of the laminated modules 2 and 3 are formed with openings at every other stage and serve as an inlet / outlet port 14 for the primary fluid A and an inlet / outlet port 15 for the secondary fluid B. Primary fluid A
By making the surface next to the surface facing the opening of the inlet of the above-mentioned surface the surface facing the opening of the outlet of the secondary fluid B, efficient heat exchange of the counterflow system becomes possible.

Primary fluid A entering through one opening at the inlet
Is a recess in the back surface of each mountain row 4 of the laminated module 3 one step above the opening via the guide portion 12 and is the fluid passage 10
Then, the fluid flows through the fluid passage 10 formed by the troughs 5 of the laminated module 2 one step below the opening portion and flows out from one opening portion of the outlet via the guide portion 12. At this time, the fluid passage 10 which is a recess on the back surface is surrounded by the fluid passage 11 through which the secondary fluid B passes, and the fluid passage 10 by the trough array 5 is also surrounded by the fluid passage 11 through which the secondary fluid B passes through by four rows. There is. That is, continuous heat exchange is performed between the primary fluid A and the secondary fluid B in a remarkably wide heat transfer area. Unlike the conventional laminated heat exchangers, a space holding member for securing the fluid passages 10 and 11 is not required, so that the laminated heat exchanger has a high performance and a small size. The primary fluid A and the secondary fluid B are mountain rows 4 and valley rows 5
When viewed in a cross section perpendicular to, the flow will be as shown in FIG.

By conducting the primary fluid A and the secondary fluid B in a counterflow system, the primary fluid A and the secondary fluid B can be brought into thermal contact with each other with a large temperature gradient, and the heat exchange efficiency can be kept high. However, even if the primary fluid A and the secondary fluid B are passed in the same direction, the performance does not deteriorate so much. If this parallel flow system is adopted, it is possible to position the outlets and the inlets in a positional manner, and when applied to an air conditioner or the like, the degree of freedom in design increases.

The material of the laminated modules 2 and 3 may be a metal such as aluminum or a resin, a paper material having a fluid-shielding property and a moisture permeability, or a composite material obtained by combining these.
It is possible to improve the recyclability by using a single material because it does not have to be separated at the time of recycling. The mountain rows 4 and the valley rows 5 can be formed by press working, and basically any shape may be used as long as a fluid flow space can be secured in a laminated state, but the ease of processing and the heat transfer area are wide. Waveforms, triangles, and rectangles are suitable as possible shapes. The connection between the laminated modules 2 and 3 is
Means such as welding, heat fusion, and adhesion may be adopted depending on the material. Further, by making the projection plane shape of the laminated modules 2 and 3 hexagonal, the guide portion 12 that smoothes the flow of fluid to the inflow side and the outflow side to the fluid passages 10 and 11 can be configured, and the projection plane shape can be changed. Although the pressure loss of the heat exchanger 1 can be reduced as compared with the case of the quadrangle, a polygonal projection plane shape other than the hexagon may be used. Further, the arrangement of the mountain rows and the valley rows is not limited to the spline shape, and may be arranged in parallel in a curved shape.

Embodiment 2. The present embodiment shown in FIGS. 3 and 4 is intended to reduce the pressure loss by devising the shapes of the laminated modules 2 and 3 which are the constituent elements of the laminated heat exchanger 1 shown in the first embodiment. Except for the configuration related to this, it is the same as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 3 and FIG. 4, the laminated modules 2 and 3 which are the constituent elements of the laminated heat exchanger 1 of the present embodiment are arranged in two rows of mountain rows 4 and valley rows 5 facing each other. The four sides of the set are formed in a deformed hexagonal projection plane shape with the four sides inserted in a V shape. Laminated modules 2, 3 of this shape
In the laminated heat exchanger 1 configured by laminating, the opening area of the fluid inflow / outflow portion 8 can be made wider than that of the hexagonal projected plane shape, so that the pressure loss can be reduced. Further, since the part entered in the dog-legged shape can be used as the approach distance on the discharge side of the fluid pressure-feeding means of the blower or the pump, the fluid pressure-feeding means and the laminated heat exchanger 1 can be arranged in close proximity to each other, and It can also contribute to downsizing of a device incorporating the mold heat exchanger 1. The other functions are the same as those of the first embodiment.

Embodiment 3. In the present embodiment shown in FIG. 5, the pressure loss is reduced by devising the shapes of the laminated modules 2 and 3 which are the constituent elements of the laminated heat exchanger 1 shown in the first and second embodiments. The configuration is the same as that of the first and second embodiments except for the configuration related thereto. Therefore, the same parts as those in the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.

The laminated heat exchanger 1 of the present embodiment is shown in FIG.
As shown in FIG. 5, the inflow portions of the two fluid passages 10 and 11 face one surface of the polyhedron, and the outflow portions face two surfaces of the polyhedron that are separated from each other. The laminated modules 2 and 3 which are the constituent elements of the laminated heat exchanger 1 are formed in an octagonal (or square or hexagonal) planar shape as shown in FIG.
One edge in the row direction of the mountain row 4 and the valley row 5 is open, and two separated edges on the opposite side are also open. In the laminated heat exchanger 1 formed by laminating the laminated modules 2 and 3, the primary fluid A and the secondary fluid B are connected to the primary side fluid passage 10 from a wide frontage.
In addition, the primary fluid A and the secondary fluid B flow out by branching into the outflow portion nearest to the primary-side fluid passages 10 and the secondary-side fluid passages 11. Therefore, the laminated heat exchanger 1 with less pressure loss
Becomes The other functions are the same as those of the first and second embodiments.

Fourth Embodiment The present embodiment shown in FIGS. 6 to 8 has a pressure loss due to the shape of both ends of the mountain row 4 of the laminated modules 2 and 3 constituting the laminated heat exchanger 1 shown in the first and second embodiments. The device is the same as that of each of the above-described embodiments except for the configuration related thereto. Therefore, the same parts as those in each embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the laminated modules 2 and 3 constituting the laminated heat exchanger 1 of this embodiment, as shown in FIG. 6 and FIG. Then, the guide portion 12 has a structure in which each tip of the guide portion 12 extends so as to face the direction of fluid flow. By adopting this configuration, the opening of the inflow side and the outflow side of the fluid passages 10 and 11 on the back surface of the mountain row 4 can be widened, and moreover, since the tip is oriented in the fluid flow direction, the pressure loss is reduced.

Further, as shown in FIG. 8, the pressure loss can be further reduced by providing the guide portion 12 between the mountain row 4 and the inflow / outflow portion 8 with the rectifying structure 18 for guiding the fluid to the fluid passages 10 and 11. . And the laminated module 2, 3
When the rigidity of the rectifying structure 18 is insufficient, the rectifying structure 18 can increase the rigidity so that the compressive load in the stacking direction can be carried by the rectifying structure 18, and the stability of the shape of the stacked heat exchanger 1 is enhanced. You can also The other functions are the same as those in the above-described embodiments.

Fifth Embodiment The present embodiment shown in FIG. 9 is a guide means 19 projecting in a chevron shape on a side wall 9 adjacent to the inflow / outflow portion 8 of the laminated modules 2 and 3 constituting the laminated heat exchanger 1 shown in the above-mentioned respective embodiments. Is provided,
The configuration other than the guiding means 19 is the same as that of each embodiment. Therefore, the same parts as those in each embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The laminated heat exchanger 1 of the present embodiment has a side wall 9 adjacent to the inflow / outflow portion 8 of the laminated modules 2 and 3 shown in FIG.
As shown in FIG. 5, a guide means 19 protruding in a chevron shape is provided. The guide means 19 forms the two inclined surfaces 20 facing the opening, so that the primary fluid A and the secondary fluid B can flow into and out of the inflow / outflow portion 8 smoothly. Further, the side wall 9 may have a shape which also serves as the guide means 19. The other functions are the same as those in the above-described embodiments.

Sixth Embodiment The present embodiment shown in FIGS. 10 and 11 includes a row of mountains 4 and a row of valleys 5 formed in the laminated modules 2 and 3 that form the laminated heat exchanger 1 shown in the first to fifth embodiments. The shape and the way of stacking are changed, and the first to fifth embodiments except for the configuration related thereto.
Is the same as Therefore, the same parts as those in the first to fifth embodiments are designated by the same reference numerals, and the description thereof will be omitted.

The laminated heat exchanger 1 of this embodiment is formed by laminating the laminated modules 2 and 3 with the peaks of the mountain rows 4 and the bottoms of the valley rows 5 facing each other. . Mountain row 4
The two rows of fluid passages 10 and 11 which are independent of each other in the mountain row 4, the valley row 5 and the valley row 5 are alternately arranged in the stacking direction in the same direction. In the laminated heat exchanger 1, as described above, as shown in FIG. 11, the primary side fluid passage 10 and the secondary side fluid passage 11 are formed in layers in the stacking direction in a cross section perpendicular to the mountain row 4. Although different from the first embodiment, the primary side fluid passage 10 and the secondary side fluid passage 11 have a structure in which they are surrounded by each other and are in thermal contact with each other over a wide heat transfer area. Therefore, the laminated type shown in the first embodiment is used. The same function as the heat exchanger 1 can be obtained.

[0036]

According to the first aspect of the present invention, a high performance and compact stacked heat exchanger can be obtained.

According to the second aspect of the present invention, a high performance and compact stacked heat exchanger can be obtained.

According to the invention of claim 3, in addition to the effect according to claim 1 or claim 2, pressure loss is reduced and performance is improved.

According to the invention of claim 4, in addition to the effect according to any one of claims 1 to 3, the pressure loss is reduced, and the miniaturization of the applied device can be promoted.

According to the invention of claim 5, the stability of the laminated structure can be secured together with the effect according to any one of claims 1 to 4.

According to the invention of claim 6, the pressure loss is reduced and the performance is improved together with the effect of claim 5.

According to the invention of claim 7, the pressure loss is reduced together with the effect according to claim 5 or 6.

According to the invention of claim 8, in addition to the effect according to any one of claims 1 to 7, the flow of the fluid to the fluid passage can be made smooth.

According to the invention of claim 9, in addition to the effect according to any one of claims 1 to 8, recycling is facilitated.

According to the invention of claim 10, a large heat transfer area can be obtained together with the effect according to any one of claims 1 to 9.

According to the invention of claim 11, in addition to the effect according to any one of claims 1 to 10, it is easy to process and the productivity can be increased.

According to the twelfth aspect of the invention, the heat exchange efficiency is increased together with the effect according to any one of the first to eleventh aspects.

According to the invention of claim 13, in addition to the effect according to any one of claims 1 to 11, the inlet and outlet portions of the primary fluid and the secondary fluid can be arranged at close positions.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a laminated heat exchanger according to a first embodiment.

FIG. 2 is a primary fluid A of the laminated heat exchanger according to the first embodiment.
FIG. 6 is an explanatory diagram showing how the secondary fluid B flows.

FIG. 3 is a perspective view showing a laminated module which is a constituent element of the laminated heat exchanger according to the second embodiment.

FIG. 4 is a perspective view showing a laminated module which is a constituent element of the laminated heat exchanger according to the second embodiment.

FIG. 5 is an exploded perspective view showing a laminated heat exchanger according to a third embodiment.

FIG. 6 is a perspective view showing a laminated module which is a constituent element of the laminated heat exchanger according to the fourth embodiment.

FIG. 7 is a perspective view showing another laminated module which is a component of the laminated heat exchanger according to the fourth embodiment.

FIG. 8 is a perspective view showing another laminated module which is a constituent element of the laminated heat exchanger according to the fourth embodiment.

FIG. 9 is a perspective view showing a laminated heat exchanger according to a fifth embodiment.

FIG. 10 is an exploded perspective view showing a laminated heat exchanger according to a sixth embodiment.

FIG. 11 is an explanatory diagram showing how primary fluid A and secondary fluid B flow in a laminated heat exchanger according to a sixth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 laminated heat exchanger, 2 laminated module, 3 laminated module, 4 mountain row, 5 trough row, 8 inflow / outflow part, 9 side wall, 10 fluid passageway, 11 fluid passageway,
12 guides, 14 doorways, 15 doorways,
18 rectifying structure, 19 guiding means, A primary fluid, B secondary fluid.

Claims (13)

[Claims] 1. A mountain-shaped array and a valley-shaped array are alternately arranged in parallel to form a single heat-conducting polygonal heat-transfer plate, and the heat-transfer plates are independent of each other between the mountain-rows and the valley-rows. A laminated heat exchanger configured by stacking two fluid passages so as to be alternately arranged in the same direction in a direction orthogonal to the stacking direction, and forming a polyhedron in which the inflow / outflow portions of the two fluid passages face respective surfaces. 2. The mountain rows and the valley rows are alternately arranged in parallel to form a single heat-conducting polygonal heat transfer plate, and the heat transfer plates are provided with the peaks and peaks of the mountain rows and the bottoms of the valley rows. And the bottoms are opposed to each other, and the two independent fluid passages in the mountain rows and the mountain rows, and the valley rows and the valley rows are laminated so as to be alternately arranged in the same direction in the laminating direction. A laminated heat exchanger configured as a polyhedron in which the inflow and outflow portions face individual surfaces. 3. The laminated heat exchanger according to claim 1, wherein the inflow portions of the fluid passages of the two systems are faced to each other and the outflow portions are separated from each other. Stacked heat exchanger facing the. 4. The laminated heat exchanger according to any one of claims 1 to 3, wherein the heat transfer plates have four pairs of opposite sides in a row direction of a mountain row and a valley row. A laminated heat exchanger with a deformed hexagonal projection plane shape in which is inserted in a V shape. 5. The laminated heat exchanger according to any one of claims 1 to 4, wherein a height of the mountain row is provided at other edges except for the edge serving as an inflow / outflow portion of the heat transfer plate. A laminated heat exchanger having side walls of substantially the same height. 6. The laminated heat exchanger according to claim 5, wherein a rectifying structure is provided between the mountain row and the inflow / outflow portion. 7. The laminated heat exchanger according to claim 5, wherein the side wall adjacent to the inflow / outflow portion is provided with a guide means projecting in a chevron shape. 8. The laminated heat exchanger according to claim 1, wherein the end of the mountain row of the heat transfer plate has a sloped structure. 9. The laminated heat exchanger according to claim 1, wherein the constituent members are made of a single material. 10. The laminated heat exchanger according to claim 1, wherein the mountain rows and the valley rows have a polygonal cross-sectional shape. 11. The laminated heat exchanger according to claim 1, wherein the crest rows and the trough rows are formed in a corrugated cross-sectional shape. 12. The laminated heat exchanger according to any one of claims 1 to 11, wherein the primary fluid and the secondary fluid are circulated in opposite directions in a fluid passage of two systems. Type heat exchanger. 13. The laminated heat exchanger according to any one of claims 1 to 11, wherein the primary fluid and the secondary fluid are circulated in the same direction in two fluid passages. Type heat exchanger.