JPH08128794A - Heat exchange element - Google Patents

Abstract

PURPOSE: To improve a heat exchange efficiency and to reduce a pressure loss and noise by taking a means wherein shielding ribs having a plurality of projections formed are provided on the surface of a heat transfer plate and also space ribs having a plurality of projections formed are provided between them. CONSTITUTION: A primary air flow X-X1 running on the surface of a heat transfer plate1 flows in from the side of an inflow port 6 made up of shielding ribs 2b and space ribs 4b and passes through space ribs 4a in the central part and then it is discharged from the side of a discharge port 7 made up of shielding ribs 2a and the space ribs 4a. A secondary air flow Y-Y1 flows in so that it intersects the primary air flow X-X1 perpendicularly or obliquely, from the side of an inflow port 10 located on the rear side of the heat transfer plate1 , made up of the shielding ribs 2b and the space ribs 4b and opposed to the primary air flow X-X1 . In the central part, it flows oppositely to the primary air flow X-X1 , and in the vicinity of the discharge port 11 side, it is so discharged as to intersect the primary air flow X-X1 perpendicularly or obliquely. The shielding ribs 2a and 2b and the space ribs 4a and 4b have projections 5a and 5b formed respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange element having a laminated structure used for a heat exchange type ventilation fan or the like.

[0002]

2. Description of the Related Art In recent years, the heights of the ceilings of offices and houses tend to be narrowed, and there is a demand for miniaturization and high efficiency of the heat exchange element inside the energy-saving ventilation device installed therein. .

Conventionally, a heat exchange element of this type generally has a structure as shown in FIG. 7 (for example, JP-A-5-157).
480). The configuration will be described below with reference to FIG. 7.

As shown in the figure, on the surface of a heat transfer plate 101 having heat conductivity and moisture permeability, there are shield ribs 1 for shielding both ends.
02a and the shielding rib 102a, a plurality of spacing ribs 103a are provided at predetermined intervals.
Reference numeral 03a denotes a linear shape parallel to the shielding rib 102a, and the rear surface of the heat transfer plate 101 has shielding ribs 10 for shielding both end portions, like the front surface of the heat transfer plate 101.
2b is provided, and in the vicinity of the inlet and outlet of the air flow, the unit element 104 in which the spacing ribs 103b are arranged so as to be orthogonal to or oblique to the plurality of spacing ribs 103a on the surface of the heat transfer plate 101 is provided as a partition plate. The heat exchange element is formed by alternately laminating and bonding a plurality of sheets 105.

In the above structure, the primary air flows C-C1 and C2
When the next air flow D-D1 is passed, the heat transfer plate 101 and the partition plate 1
Heat is exchanged between the primary airflow C-C1 and the secondary airflow D-D1 via 05.

[0006]

The conventional heat exchange element as described above has a problem that the heat exchange efficiency does not change if the heat transfer plates are made of the same material and have the same area.

In addition, there is a problem that since there is no support for the heat transfer plate in the central portion of the single element, the deflection occurs, the pressure loss increases and the noise increases.

Further, as compared with the conventional cross-flow type heat exchange element, since the ventilation passage is long, there is a problem that the element itself becomes heavy and the cost becomes high.

The present invention solves the above problems, and a first object thereof is to provide a heat exchange element capable of improving heat exchange efficiency and reducing pressure loss and noise.

A second object is to provide a heat exchange element which improves heat exchange efficiency and is light in weight and low in cost.

A third object of the present invention is to provide a heat exchange element which prevents bending of the heat transfer plate in the central portion to reduce pressure loss and noise.

A fourth object of the present invention is to provide a heat exchange element which prevents deflection of the heat transfer plate in the central portion, improves heat exchange efficiency, and is light in weight and low in cost.

A fifth object of the present invention is to provide a heat exchange element which eliminates a protrusion in the central portion of a heat transfer plate which causes a turbulent flow to reduce pressure loss and noise.

A sixth object is to improve the heat exchange efficiency by eliminating the protrusion in the center of the heat transfer plate that causes turbulence.
It is to provide a heat exchange element which is light in weight and low in cost.

[0015]

The heat exchange element of the present invention comprises:
A first means for achieving the above first object is to provide a plurality of protrusions on a surface of a heat transfer plate having heat conductivity and moisture permeability, on a side of an air passage of a rib that shields both ends of the rib. A plurality of spacing ribs are provided at predetermined intervals between the shielding ribs, and the spacing ribs are provided with a plurality of protrusions in a linear shape parallel to the shielding ribs. On the back surface of the heat plate, in the vicinity of the inlet and outlet of the air flow, space ribs with protrusions are provided so as to be orthogonal or oblique to the plurality of space ribs on the surface of the heat transfer plate. A single element integrally formed of resin and a partition plate made of the same material as the heat transfer plate of the single element are alternately laminated and bonded through the plate.

A second means for achieving the second object is that the spacing ribs having a plurality of protrusions near the inlet and outlet of the air flow on the surface of the heat transfer plate are parallel to the shielding ribs. ,
Further, the intermittent spacing ribs provided intermittently and the back surface of the heat transfer plate are orthogonal or oblique to the intermittent spacing ribs provided on the surface of the heat transfer plate with the intermittent spacing ribs having protrusions. It will be configured.

A third means for achieving the third object is that a plurality of spacing ribs in the vicinity of the inlet and outlet of the air flow are parallel to the shielding rib and are straight lines without protrusions. The configuration has a shape.

A fourth means for achieving the fourth object is that a plurality of linear spacing ribs near the inlet and outlet of the air flow are parallel to the shielding ribs and are intermittent. The configuration is provided.

Further, a fifth means for achieving the fifth object is such that the central portion of the plurality of spacing ribs is parallel to the shielding rib and has a linear shape without protrusions. .

Further, a sixth means for achieving the sixth object is that a plurality of spacing ribs near the inflow port and the discharge port of the air flow have a plurality of protrusions and are arranged in parallel with the shielding rib. In addition, the configuration is intermittently provided.

[0021]

According to the present invention, by the structure of the first means described above, turbulent flow is caused by the projections in the air flow entering from the inflow port, destroys the boundary layer whose rate is controlled by the heat exchange efficiency, and improves the heat exchange efficiency. be able to. Further, since the heat transfer plate can be prevented from bending at the central portion by the protrusion, the pressure loss can be reduced and the noise can be reduced.

In addition to the turbulent flow caused by the projections, the second means makes the turbulent flow due to the branching and the merging by interrupting the spacing ribs near the inlet and outlet of the air flow, thereby further increasing the heat flow. Exchange efficiency can be improved. Further, by making the spacing ribs intermittent, weight reduction and cost reduction can be achieved.

Further, by the structure of the third means, by eliminating the protrusions of the spacing ribs near the inlet and outlet of the air flow, the pressure loss can be reduced and the noise can be reduced.

According to the structure of the fourth means, in addition to the turbulent flow due to the projection, the turbulent flow due to the branching and the merging is added by intermittently forming the interval rib near the inlet and outlet of the air flow, Furthermore, the heat exchange efficiency can be improved.
Further, by making the spacing ribs intermittent, weight reduction and cost reduction can be achieved.

Further, according to the constitution of the fifth means, by eliminating the protrusion in the central portion, the ventilation resistance of the air flow is reduced,
The pressure loss can be reduced and the noise can be reduced.

Further, according to the constitution of the sixth means, by eliminating the protrusion in the central portion, the ventilation resistance of the air flow is reduced,
The pressure loss can be reduced and the noise can be reduced, and the turbulent flow due to branching and merging is added by intermittently forming the ribs near the inlet and outlet of the air flow, further improving heat exchange efficiency. can do. Further, by making the spacing ribs intermittent, it is possible to reduce the weight and cost.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, reference numeral 1 denotes a heat transfer plate having a substantially hexagonal shape having heat conductivity and moisture permeability. On the surface of the heat transfer plate 1, there are shield ribs 2a for shielding both ends, and the shield ribs 2a. Of 1
A plurality of protrusions 5a are provided in the air passage 3 where the secondary air flow X-X1 and the secondary air flow Y-Y1 face each other, and a plurality of protrusions 5a that form the air passage 3 of the primary air flow X-X1 are provided. It is composed of book spacing ribs 4a and is parallel to the shielding ribs 2a.

On the other hand, the shielding rib 2 on the back surface of the heat transfer plate 1
b is formed so that the inlet port 6 side and the outlet port 7 side of the primary air flow X-X1 are shielded, and the shielding rib 2b also has a wind in which the primary air flow X-X1 and the secondary air flow Y-Y1 face each other. The projection 5a is provided in the passage 9 and the air passage 9 for the secondary air flow Y-Y1 is provided.
The plurality of spacing ribs 4b provided with a plurality of protrusions 5b that form the space are formed on the surface of the heat transfer plate 1 near the inlet 6 side and the outlet 7 side of the primary airflow X-X1. 4a
And are formed so as to intersect at right angles or obliquely. A partition plate made of the same material as the heat transfer plate 1 is a single element 8 in which the shielding ribs 2a, 2b, the spacing ribs 4a, 4b, and the protrusions 5a, 5b are integrally molded with the heat transfer plate 1 with resin. A plurality of 12 are alternately laminated and bonded so that the air passage 3 of the primary air flow X-X1 and the air passage 9 of the secondary air flow Y-Y1 are formed.
Form a heat exchange element.

In the above-mentioned structure, the primary air flow X-X1 flowing on the surface of the heat transfer plate 1 enters from the side of the inflow port 6 constituted by the shielding rib 2a and the plurality of spacing ribs 4a, and the plurality of central air flows. It passes through the spacing rib 4a and exits from the discharge port 7 side which is composed of the other shielding rib 2a and a plurality of spacing ribs 4a.

On the other hand, the secondary air flow Y-Y1 is composed of a shield rib 2b on the back surface of the heat transfer plate 1 and a plurality of spacing ribs 4b.
The primary airflow X-X1 enters from the side of the inlet 10 facing the secondary airflow X-X1 so as to be orthogonal to or oblique to the primary airflow X-X1, and in the central portion so as to face the primary airflow X-X1.
In the vicinity of the discharge port 11 side, the primary airflow X-X1 is discharged so as to intersect at right angles or obliquely, and at this time, the primary airflow X-X1 and the secondary airflow Y-Y1 are passed through the heat transfer plate 1 and the partition plate 12.
Exchange temperature and humidity with.

As described above, according to the heat exchange element of the first embodiment of the present invention, by providing the projections 5a and 5b on the shielding ribs 2a and 2b and the plurality of spacing ribs 4a and 4b,
Turbulence occurs in the primary air flow X-X1 and the secondary air flow Y-Y1, and the boundary layer whose rate of heat exchange is rate-determining is destroyed, and heat exchange efficiency is improved. Further, since the bending of the heat transfer plate 1 at the central portion is prevented by the projections 5a and 5b, the pressure loss can be reduced and the noise can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the primary air flow X- of the heat transfer plate 1
The vicinity of the inlets 6 and 10 and the outlets 7 and 11 of the X1 and the secondary air flow Y-Y1 is formed by a plurality of intermittent spacing ribs 13a and 13b provided with a plurality of protrusions 5a and 5b,
A plurality of single elements 14 and partition plates 12 are alternately laminated and adhered to form a heat exchange element.

With the above structure, the primary air flow X-X1 and the secondary air flow Y-Y1 enter from the inflow ports 6, 10 side, and in the vicinity of the inflow ports 6, 10 side, a plurality of protrusions 5a, 5b are formed. The shielding ribs 2a and 2b provided and a plurality of intermittent spacing ribs 1
While branching and merging are repeated by 3a and 13b, the plurality of projections 5a and 5b cause a turbulent flow in the central portion, and inflow ports 6 and 10 near the discharge ports 7 and 11 side.
With the same configuration as in the vicinity of the side, discharge is performed while repeating branching and merging. At this time, the temperature and the humidity are exchanged between the primary airflow X-X1 and the secondary airflow Y-Y1 via the heat transfer plate 1 and the partition plate 12.

As described above, according to the heat exchange element of the second embodiment of the present invention, the shielding ribs 2a and 2b provided with the plurality of protrusions 5a and 5b and the plurality of protrusions 5a and 5b are provided. The plurality of intermittently spaced ribs 13a and 13b flow as a turbulent flow while repeatedly branching and merging, so that the boundary layer whose rate of heat exchange is rate-determining is destroyed and heat exchange efficiency is improved. Further, since the spacing ribs 13a and 13b are intermittent, the weight and cost can be reduced.

Next, a third embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The first embodiment and the second embodiment
The same parts as those in the embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the single element 15 is provided with projections 5a and 5b on the air passage side where the primary airflow X-X1 of the shielding ribs 2a and 2b and the secondary airflow Y-Y1 face each other.
A plurality of protrusions 5a and 5b are provided only in the central portions of the plurality of spacing ribs 4a and 4b, and a plurality of partition plates 12 are alternately laminated and bonded to form a heat exchange element.

With the above structure, the primary air flow X-X1 and the secondary air flow Y-Y1 enter from the inflow ports 6, 10 side, become a laminar flow in the vicinity of the inflow ports 6, 10 side, and in the central part. ,
The plurality of protrusions 5a and 5b form a turbulent flow, which is discharged from the discharge ports 7 and 11 side, the heat transfer plate 1 and the partition plate 1.
The temperature and the humidity are exchanged between the primary airflow X-X1 and the secondary airflow Y-Y1 via 2.

Thus, according to the third embodiment of the present invention,
By eliminating the protrusions near the air flow inlets 6 and 10 and the discharge ports 7 and 11, the air flow resistance of the air flow is reduced,
In addition, the plurality of protrusions 5a and 5b are attached to the shielding ribs 2a and 2b.
And by providing only in the central part of the plurality of spacing ribs 4a, 4b, the bending of the heat transfer plate 1 in the central part is prevented,
The pressure loss can be reduced and the noise can be reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the first to third embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the single element 16 includes a plurality of spacing ribs 4a near the inlets 6 and 10 and the outlets 7 and 11 of the primary airflow X-X1 and the secondary airflow Y-Y1.
4b is a structure of intermittent interval ribs 17a and 17b having no protrusion, and a plurality of partition plates 12 are alternately laminated and bonded to form a heat exchange element.

With the above structure, the primary air flow XX1 and the secondary air flow Y-Y1 enter from the inlets 6, 10 side, and a plurality of intermittent spacing ribs 17a, 17 near the inlets 6, 10 side.
By b, the flow repeats branching and merging, and in the central part, it becomes a turbulent flow due to the plurality of projections 5a, 5b. Depending on the configuration, the liquid is discharged from the discharge ports 7 and 11 while repeating branching and merging. At this time, the temperature and the humidity are exchanged between the primary airflow X-X1 and the secondary airflow Y-Y1 via the heat transfer plate 1 and the partition plate 12.

As described above, according to the fourth embodiment of the present invention,
A plurality of intermittent spacing ribs 17a, 17b having no protrusions are provided near the inlets 6 and 10 of the air flow and the outlets 7 and 11 side.
With the above configuration, a plurality of protrusions 5a in the central portion,
Due to the turbulent flow due to 5b and the repeated branching and merging, the boundary layer whose rate of heat exchange is rate-determining is destroyed and heat exchange efficiency is improved. Further, since the spacing ribs 17a and 17b are intermittent, the weight and cost can be reduced.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the first to fourth embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the single element 18 includes a heat transfer plate 1, shielding ribs 2a and 2b having no protrusion, and a primary air flow XX.
There are no protrusions in the central portion where the first and second air flows Y-Y1 face each other, and a plurality of spacing ribs 4a, 4b provided with protrusions 5a, 5b only in the vicinity of the inlets 6, 10 side and the discharge ports 7, 11 side. And a plurality of partition plates 12 are alternately laminated and bonded to form a heat exchange element.

With the above structure, the primary airflow X-X1 and the secondary airflow Y-Y1 enter from the inlets 6 and 10 side, and near the inlets 6 and 10 are disturbed by a plurality of projections 5a and 5b. And a plurality of spacing ribs 4a, 4 in the central portion.
b between the discharge ports 7 and 11 and the inlets 6 and 1
A turbulent flow is discharged by the same structure as in the vicinity of the 0 side, and is discharged.
At this time, the temperature and the humidity are exchanged between the primary airflow X-X1 and the secondary airflow Y-Y1 via the heat transfer plate 1 and the partition plate 12.

Thus, according to the fifth embodiment of the present invention,
By providing the plurality of protrusions 5a and 5b only in the vicinity of the air flow inlets 6 and 10 and the discharge ports 7 and 11,
Since the airflow resistance of the central air flow is reduced, the pressure loss can be reduced and the noise can be reduced.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the first to fifth embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the single element 19 includes a heat transfer plate 1, shielding ribs 2a and 2b having no protrusion, and a primary air flow XX.
The central portions where the first and second air flows Y-Y1 face each other are linearly spaced ribs 4a and 4b having no protrusions, and protrusions 5a and 5b are provided only near the inlet ports 6 and 10 and the discharge ports 7 and 11 sides. A plurality of intermittent spacing ribs 13a and 13b are provided, and a plurality of sheets are alternately laminated and bonded to the partition plate 12 to form a heat exchange element.

With the above structure, the primary air flow X-X1 and the secondary air flow Y-Y1 enter from the inflow ports 6, 10 side, and a plurality of protrusions 5a, 5b are provided near the inflow ports 6, 10 side. Shielding ribs 2a, 2b and a plurality of intermittent spacing ribs 13
While repeating branching and merging by a and 13b, in the central portion, flows between the plurality of spacing ribs 4a and 4b, and in the vicinity of the discharge ports 7 and 11 by the same configuration as in the vicinity of the inlets 6 and 10. It is discharged while repeating branching and merging. At this time, the primary air flow X− is passed through the heat transfer plate 1 and the partition plate 12.
The temperature and humidity are exchanged between X1 and the secondary airflow Y-Y1.

As described above, according to the sixth embodiment of the present invention,
By forming a plurality of intermittent spacing ribs 13a and 13b near the inlets 6 and 10 side and the outlets 7 and 11 side of the air flow, the air flow becomes a turbulent flow while repeating branching and merging, so that heat exchange efficiency is improved. The rate-determining boundary layer is destroyed and heat exchange efficiency is improved. Further, since the spacing ribs 17a and 17b are intermittent, the weight and cost can be reduced.

[0053]

As is apparent from the above embodiments, according to the present invention, by providing the projections on the shielding ribs and the spacing ribs, a boundary layer in which the air flow becomes turbulent and the heat exchange efficiency is rate-determining is formed. It is destroyed and heat exchange efficiency is improved. Also, by providing protrusions on the shielding ribs and the spacing ribs, the heat transfer plate,
Also, it is possible to provide a heat exchange element capable of preventing the partition plate from bending and reducing pressure loss and noise.

Further, by forming the shielding rib provided with the projection and the intermittent spacing rib, the air flow flows as a turbulent flow while repeatedly branching and merging, so that the boundary layer whose rate of heat exchange is rate-determining is destroyed. Heat exchange efficiency is improved,
By providing the interval ribs intermittently, it is possible to provide a heat exchange element that can be reduced in weight and cost.

Further, by providing the protrusions only at the central portions of the shielding ribs and the spacing ribs, the ventilation resistance in the vicinity of the inlet and outlet of the air flow is reduced, the pressure loss is reduced, and the heat exchange capable of reducing noise is achieved. An element can be provided.

Further, by forming intermittent gap ribs near the inlet and outlet sides of the airflow, the airflow is in the vicinity of the inlet and outlet sides of the airflow in addition to the turbulent flow of the protrusions in the central portion. As it becomes a turbulent flow while repeating branching and merging at, the boundary layer that limits the heat exchange efficiency is destroyed to improve the heat exchange efficiency, and the interval ribs are intermittent to reduce the weight,
A heat exchange element that can be reduced in cost can be provided.

By providing the protrusions only near the inlet and outlet of the air flow, the air flow resistance at the center of the air flow passage is reduced, so that the pressure loss can be reduced and the noise can be reduced. A heat exchange element can be provided.

Further, by forming ribs near the inlet and outlet sides of the air flow to form a turbulent flow while repeatedly branching and merging, the boundary layer whose heat exchange efficiency is rate-determining is destroyed. Thus, the heat exchange efficiency is improved, and by providing the interval ribs intermittently, it is possible to provide a heat exchange element which can be reduced in weight and cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a single element and a partition plate constituting a heat exchange element according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a single element and a partition plate constituting the heat exchange element of the second embodiment.

FIG. 3 is a perspective view of a single element and a partition plate constituting the heat exchange element of the third embodiment.

FIG. 4 is a perspective view of a single element and a partition plate constituting the heat exchange element of the fourth embodiment.

FIG. 5 is a perspective view of a single element and a partition plate constituting the heat exchange element of the fifth embodiment.

FIG. 6 is a perspective view of a single element and a partition plate constituting the heat exchange element of the sixth embodiment.

FIG. 7 is a perspective view of a single element and a partition plate forming a conventional heat exchange element.

[Explanation of symbols]

 1 Heat Transfer Plate 2a Shielding Rib 2b Shielding Rib 4a Interval Rib 4b Interval Rib 5a Projection 5b Projection 6 Inflow Port 7 Discharge Port 8 Single Element 10 Inlet 11 Discharge Port 12 Partition Plate 13a Intermittent Spacing Rib 13b Discontinuity Spacing Rib 14 Single Element 15 Single element 16 Single element 17a Intermittent spacing rib 17b Intermittent spacing rib 18 Single element 19 Single element

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motohiko Seno 6-61, Imafukunishi, Joto-ku, Osaka-shi, Osaka Matsushita Seiko Co., Ltd.

Claims (6)

[Claims] 1. A shield rib having a plurality of projections on the surface of a heat transfer plate having heat conductivity and moisture permeability on the air passage side of a rib for shielding both ends, and a predetermined distance between the shield ribs. A plurality of spacing ribs are provided at intervals, the spacing ribs are provided with a plurality of protrusions in a linear shape parallel to the shielding rib, and an air flow inlet is provided on the back surface of the heat transfer plate. Also, in the vicinity of the discharge port, spacing ribs having protrusions are provided so as to be orthogonal or oblique to the plurality of spacing ribs on the surface of the heat transfer plate, and integrally molded with resin via the heat transfer plate. A heat exchange element formed by alternately laminating and bonding a single element and a partition plate made of the same material as the heat transfer plate of the single element. 2. An intermittent gap rib provided with a plurality of projections near the inflow port and the discharge port of the air flow on the surface of the heat transfer plate in parallel with the shielding rib and intermittently, The heat exchange element according to claim 1, wherein the back surface of the heat transfer plate is an intermittent gap rib having protrusions and is orthogonal to or oblique to the intermittent gap rib provided on the surface of the heat transfer plate. 3. The heat exchange element according to claim 1, wherein the plurality of spacing ribs near the inlet and outlet of the airflow are parallel to the shielding rib and have a straight shape without protrusions. 4. The heat exchange element according to claim 1, wherein a plurality of linear spacing ribs near the inlet and outlet of the air flow are provided in parallel with the shielding rib and intermittently. 5. The heat exchange element according to claim 1, wherein a central portion of the plurality of spacing ribs has a linear shape which is parallel to the shielding rib and has no protrusion. 6. A plurality of spacing ribs near the inlet and outlet of the airflow have a plurality of protrusions, and are provided in parallel with the shielding rib and intermittently. Heat exchange element.