JP2933760B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used for a heat exchange type ventilation fan and the like.

[0002]

2. Description of the Related Art In recent years, heat exchange type ventilation fans effective for energy saving have become widespread, and heat exchangers used therein are required to have improved durability and performance.

Conventionally, this type of heat exchanger is shown in FIGS.
The configuration was as shown in FIG. Hereinafter, the configuration will be described with reference to FIGS.

[0004] As shown in the figure, reference numeral 101 denotes a thin heat transfer plate 102 made of paper or plastic, and a corrugated spacing plate 1.
03 is a heat exchange plate bonded to the heat exchange plate 1
The heat exchanger 104 is formed by laminating a plurality of sheets 01 alternately by 90 degrees.

In the above configuration, when the primary air flow X and the secondary air flow Y flow, heat is exchanged between the primary air flow X and the secondary air flow Y.

[0006]

In such a conventional heat exchanger, since the spacing plate 103 is corrugated, the thickness of the spacing plate 103 reduces the effective area of the ventilation passage formed by the heat transfer plate 102. There is a problem that resistance loss increases.

[0007] Generally, the heat transfer plate 1 is used for total heat exchange.
02 and the spacer 103 are made of paper. In this case, the heat exchanger 104 is very fragile,
Of the heat transfer plate 102 or the spacing plate 1 due to long-term use.
03 shrinks due to repeated moisture absorption and drying, and there is a problem in durability such that the primary airflow and the secondary airflow are easily mixed.

The manufacturing process of the heat exchanger 104 is as follows: step folding of the spacing plate 103 → creation of the heat exchange plate 101 by bonding the heat transfer plate 102 and the spacing plate 103 → cutting of the heat exchange plate 101 →
Lamination → final cutting to make the heat exchanger 104 have a predetermined size, and the manufacturing cost has been high.

[0009] Further, in the finish cutting after lamination, there is a problem that the eyes of the spacing plate 103 are easily crushed and the cutting operation is difficult.

[0010] The present invention solves the above-mentioned problems, and comprises a plurality of ribs provided on the surface of a heat transfer plate and a plurality of ribs provided on the back surface of the heat transfer plate at right angles to the ribs. A heat exchanger plate was formed by integrally molding with resin, and a plurality of the heat exchanger plates and partition plates were alternately laminated to form a heat exchanger, and provided at both ends of the heat transfer plate. By chamfering the outer ridge of the shielding rib and forming the airflow entry surface of the heat exchanger into a groove, the resistance loss of the passage and the shape resistance loss of the airflow entry surface are reduced, and the heat exchanger is made solid. It is a first object of the present invention to provide a durable heat exchanger with little aging.

A second object is to form a plurality of ribs provided on the surface of the heat transfer plate and a plurality of ribs provided on the back surface of the heat transfer plate orthogonally to the ribs into a resin by sandwiching the heat transfer plate. The heat exchange plate is formed integrally with the heat exchange plate, and the heat exchange plates are alternately shifted by 90 degrees, and the ribs on the back surface of the adjacent heat transfer plate are positioned between the ribs on the surface of the heat transfer plate. The manufacturing process is simplified by forming a heat exchanger by laminating and chamfering the outer ridges of the shielding ribs provided at both ends of the heat transfer plate to make the airflow entry surface of the heat exchanger a groove. To provide a durable heat exchanger with reduced aging and reduced manufacturing costs, reduced passage resistance loss and reduced shape resistance loss of the airflow entry surface, and a strong heat exchanger. .

[0012]

SUMMARY OF THE INVENTION The heat exchanger of the present invention comprises a first heat exchanger.
In order to achieve the object of (1), the first means is provided at both opposite ends of the front and back surfaces of the heat transfer plate, two sets of shielding ribs having chamfered outer ridges, and a plurality of pairs at predetermined intervals parallel to the shielding ribs. The provided rib is orthogonal to the front and back surfaces of the heat transfer plate, and the heat transfer plate is interposed therebetween and integrally molded with resin to form a heat exchange plate. A configuration in which a plurality of hot plates and partition plates made of the same material are alternately laminated.

Further, in order to achieve the second object, a second
Means are provided at opposite ends of the surface of the heat transfer plate, two shielding ribs having chamfered outer ridges, a plurality of spacing ribs provided at predetermined intervals in parallel with the shielding ribs, and a back surface of the heat transfer plate. Then, a plurality of holding ribs which are orthogonal to the spacing ribs and are provided at predetermined intervals are integrally molded with resin with the heat transfer plate interposed therebetween to form a heat exchange plate, and the heat exchange plates are alternately formed. To 9
A configuration in which a plurality of the holding ribs provided on the back surface of the adjacent heat exchange plate are located between the spacing ribs provided on the surface of the heat exchange plate while being shifted by 0 degrees, and a plurality of the holding ribs are stacked.

[0014]

According to the first aspect of the present invention, the airflow path through which the primary airflow and the secondary airflow flow are alternately provided by the shielding ribs and the spacing ribs provided on the front and rear surfaces of the heat transfer plate and the partition plate. In addition to being formed stably, the airflow entry surface of the heat exchanger can be formed into a groove shape.

Further, according to the configuration of the second means, the spacing rib provided on the surface of the heat transfer plate and the holding rib provided on the back surface of the adjacent heat transfer plate hold each other's heat transfer plate. An airflow passage through which the primary airflow and the secondary airflow flow are formed stably every other layer, and the airflow entry surface of the heat exchanger can be formed in a groove shape.

[0016]

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

As shown in FIG. 1, reference numeral 1 denotes two sets of shielding ribs provided on both front and rear ends of the heat transfer plate 2, each of which has a chamfer 3 on an outer ridge line. Reference numeral 4 denotes spacing ribs provided in parallel with the shielding ribs 1, and a plurality of spacing ribs are provided at predetermined intervals between the shielding ribs 1. Reference numeral 5 denotes a heat exchange plate, in which the shielding ribs 1 and the spacing ribs 4 are orthogonal to each other on the front surface and the back surface of the heat transfer plate 2, and are integrally formed of resin with the heat transfer plate 2 interposed therebetween. Reference numeral 6 denotes a heat exchanger in which a plurality of heat exchange plates 5 and partition plates 7 made of the same material as the heat transfer plate 2 are alternately stacked, and a ventilation passage 8 for flowing a primary airflow and a ventilation passage for flowing a secondary airflow. 9 are formed every other layer.

When the primary airflow flows through the ventilation path 8 as shown by the arrow A and the secondary airflow flows through the ventilation path 9 as shown by the arrow B, the heat transfer plate 2 separates the primary airflow and the secondary airflow. Heat can be exchanged.

As described above, according to the heat exchanger of the first embodiment of the present invention, the primary air flow is caused by the shielding ribs 1 and the spacing ribs 4 formed on the front and back surfaces of the heat transfer plate 2 and the partition plate 7. The ventilation path 8 and the ventilation path 9 through which the secondary air flow flows are formed stably with high dimensional accuracy, thereby making it possible to reduce the resistance loss of the path, and to provide the shielding ribs 1 provided at both ends of the heat transfer plate 2. By forming the airflow entry surface of the heat exchanger 6 into a groove shape by the chamfering 3 provided on the outer ridge line, the shape resistance loss of the airflow entry surface can be reduced.

Further, since the shielding ribs 1 and the spacing ribs 4 are made of resin, the heat exchanger 6 is very strong, so that the heat exchanger 6 is not crushed during cleaning, is not easily deformed even when dropped, and is used for a long time. It is possible to endure.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same reference numerals as in the first embodiment denote the same parts.

As shown in the drawing, reference numeral 1 denotes two shielding ribs provided at both ends of the surface of the heat transfer plate 2 facing each other, and has a chamfer 3 on the outer ridge. Reference numeral 4 denotes spacing ribs provided in parallel with the shielding ribs 1, and a plurality of spacing ribs are provided at predetermined intervals between the shielding ribs 1. 10 is a holding rib provided on the back surface of the heat transfer plate 2,
A plurality of ribs are provided at right angles to the spacing rib 4 and at predetermined intervals. Reference numeral 5 denotes a heat exchange plate which sandwiches the heat transfer plate 2, two shielding ribs 1 and a spacing rib 4 provided on the surface of the heat transfer plate 2, and a holding rib 10 provided on the back surface of the heat transfer plate 2. Is molded integrally with resin. 6 alternately shifts the heat exchanging plates 5 by 90 degrees, and between the spacing ribs 4 provided on the surface of the heat transfer plate 2, the holding ribs 10 provided on the back surface of the adjacent heat transfer plate 2. In the heat exchanger in which a plurality of heat exchangers are positioned and stacked, a ventilation path 8 for flowing the 1:00 airflow and a ventilation path 9 for flowing the 2:00 airflow are formed alternately.

With the above configuration, when the primary airflow flows through the ventilation path 8 as shown by arrow C and the secondary airflow flows through the ventilation path 9 as shown by arrow D, the heat transfer plate 2 separates the primary airflow and the secondary airflow. Heat can be exchanged.

As described above, according to the heat exchanger of the second embodiment of the present invention, the manufacturing process of the heat exchanger 6 includes the steps of integrally forming the heat exchange plate 5 by a molding machine → lamination while alternately shifting by 90 degrees.
Since only two processes are required, the manufacturing cost can be reduced, and since the heat exchange plate 5 is molded by a molding machine, dimensional accuracy is good, and cutting after lamination is unnecessary.

The spacing rib 4 provided on the surface of the heat transfer plate 2
Since the holding ribs 10 provided on the back surface of the adjacent heat transfer plate 2 are positioned and stacked between the heat transfer plate 2 and the space ribs 4, the space ribs 4 and the holding ribs 10 hold the heat transfer plate 2 and reduce the primary airflow. The ventilation passage 8 for flowing the air and the ventilation passage 9 for flowing the secondary air flow are formed stably, so that the resistance loss of the passage can be reduced, and the outer ridge of the shielding rib 1 provided at both ends of the heat transfer plate 2. The chamfering 3 provided on the heat exchanger 6 allows the airflow entry surface of the heat exchanger 6 to have a groove shape, thereby reducing the shape resistance loss of the airflow entry. In addition, since the shielding ribs 1, the spacing ribs 4, and the holding ribs 10 are made of resin, the heat exchanger 6 is very strong, so that the heat exchanger 6 does not become blind during cleaning, does not easily deform even when dropped, etc. It is possible to withstand use.

[0026]

As is apparent from the above embodiments, according to the present invention, a plurality of ribs provided on the front and back surfaces of the heat transfer plate are integrally formed of resin with the heat transfer plate interposed therebetween. By forming a heat exchanger by stacking a plurality of the heat exchange plates, a resin rib reduces passage resistance loss and the shape resistance loss of the airflow entry surface, and makes the heat exchanger strong. In this case, it is possible to provide a heat exchanger that has little aging and can improve durability.

In addition to simplifying the manufacturing process and reducing the manufacturing cost, the resin ribs reduce the path resistance loss and the shape resistance loss of the airflow entry surface.
It is possible to provide a heat exchanger that has a strong heat exchanger, has little aging, and has improved durability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line 0-0 'of FIG. 1;

FIG. 3 is a perspective view of the heat exchanger of the second embodiment.

FIG. 4 is a sectional view taken along the line PP ′ of FIG. 3;

FIG. 5 is a perspective view showing an assembled state of a conventional heat exchanger.

FIG. 6 is a perspective view of a completed product of the heat exchanger.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shielding rib 2 heat transfer plate 3 chamfer 4 spacing rib 5 heat exchange plate 6 heat exchanger 7 partition plate 10 holding rib

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-286996 (JP, A) JP-A-3-286995 (JP, A) JP-A-3-271696 (JP, A) JP-A-56- 121999 (JP, A) JP-A-54-119153 (JP, A) JP-A-62-180278 (JP, U) JP-A-58-107488 (JP, U) (58) Fields investigated (Int. ⁶ , DB name) F28D 9/00 F28F 3/00-3/14

Claims (2)

(57) [Claims] 1. A pair of shielding ribs provided at both opposite ends of a front surface and a rear surface of a heat transfer plate and chamfering an outer ridge line, and a plurality of spacing ribs provided at predetermined intervals in parallel with the shielding ribs, The heat transfer plate is made orthogonal with the front and back surfaces of the heat transfer plate, and is integrally molded with resin with the heat transfer plate interposed therebetween to form a heat exchange plate. A partition made of the same material as the heat exchange plate and the heat transfer plate A heat exchanger in which multiple plates are alternately stacked. 2. A heat-transfer plate comprising: two shield ribs provided at opposite ends of a surface of a heat-transfer plate and having chamfered outer ridges; a plurality of interval ribs provided at predetermined intervals in parallel with the shield rib; A plurality of holding ribs, which are orthogonal to the spacing ribs and are provided at predetermined intervals, are integrally molded with a resin with the heat transfer plate interposed therebetween on the back surface of the heat exchange plate. A heat exchanger in which a plurality of heat exchangers are stacked while alternately displacing the plates by 90 degrees, and between the spacing ribs provided on the surface of the heat exchange plate and the holding ribs provided on the back surface of the adjacent heat exchange plate. .