JPH03286996A - Heat exchanger - Google Patents

Abstract

PURPOSE:To simplify a manufacturing process and to reduce manufacturing cost by integrally molding a plurality of the ribs provided on the surface of a heat transfer plate and a plurality of the ribs provided on the rear thereof so as to cross said ribs at a right angle from a resin so as to hold the heat transfer plate therebetween to form a heat exchange plate and laminating a plurality of the heat exchange plates so as to mutually shift them by 90 deg.. CONSTITUTION:A heat exchange plate 5 is formed by integrally molding two shielding ribs 1 and two spacer ribs 3 provided on the surface of a heat transfer plate 2 and the holding ribs 4 provided on the rear thereof from a resin so as to hold the heat transfer plate 2 therebetween. A plurality of the heat exchange plates 5 are laminated while alternately shifted by 90 deg. so that the holding ribs 4 provided on the rears of the adjacent heat transfer plates 2 are positioned between the spacer ribs 3 provided on the surfaces of the heat transfer plates 2 to form a heat exchanger 6 having ventilation paths 7 allowing a primary air stream to flow and ventilation paths 8 allowing a secondary air stream to flow provided every one layer. Since the manufacturing process of the heat exchanger 6 consists of two processes, that is, a process for the integral molding of the heat exchange plate 5 by a molding machine and a process for laminating the heat transfer plates while mutually shifting them by 90 deg., manufacturing cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger used in a heat exchange type ventilation fan or the like.

BACKGROUND OF THE INVENTION Conventionally, this type of heat exchanger has been constructed using a thin paper or plastic heat exchanger plate 10, as shown in FIGS. 3 and 4.
0 and a corrugated spacing plate 101 are pasted together to form a heat exchange plate 1.
02, a plurality of these heat exchange plates 102 are stacked while being shifted by 90 degrees alternately to form a heat exchanger 103, and the structure is such that heat exchange is performed between one blowing air stream X and two blowing air streams Y. .

Problems to be Solved by the Invention In such a conventional configuration, the manufacturing process of the heat exchanger 103 is as follows: folding the spacer plate 101 in stages → heat transfer plate 100 and spacer plate 10
2. Creation of heat exchange board 102 by pasting → heat exchanger board 10
2 cutting→finish cutting to obtain the predetermined dimensions of the laminated heat exchanger 103, resulting in high manufacturing costs. In addition, when finishing cutting after laminating, the spacer plate 101
The eyes were easily crushed, making cutting work difficult. Also,
When this heat exchanger 103 is used in a heat exchange type ventilation fan, etc., the effective area of the ventilation passage formed by the heat exchanger plate 100 becomes small due to the thickness of the spacer plate 101, resulting in large resistance loss and high static A compressed air blower was required. In addition, the heat exchanger plate 100 and the spacer plate 101 are generally made of paper for total heat exchange, but in this case, the heat exchanger 103 is very easy to break, and the spacer plate 102 may be crushed or dropped during cleaning. In addition, after long-term use, the heat exchanger plate 100 and the spacing plate 101 repeatedly absorb moisture and dry, causing them to shrink, making it easier for the primary airflow to mix with the secondary airflow. There was a problem.

The present invention solves the above-mentioned conventional problem, and consists of a plurality of ribs provided on the surface of a heat exchanger plate and a plurality of ribs provided on the back surface of the heat exchanger plate perpendicular to the ribs, sandwiching the heat exchanger plate. The heat exchange plates are integrally molded with resin, and the heat exchange plates are alternately heated for 90 minutes.
While shifting the temperature between the ribs on the surface of the heat exchanger plate,
By positioning the ribs on the backs of adjacent heat exchanger plates and stacking them to form a heat exchanger, the manufacturing process is simplified and manufacturing costs are reduced, and the resin ribs increase the ventilation passage area and improve resistance. The purpose of the present invention is to provide a durable heat exchanger that reduces loss and strengthens the heat exchanger, with little deterioration over time.

Means for Solving the Problem In order to solve this problem, the present invention provides two shielding ribs having the same dimensions as one side of the heat exchanger plate, which are provided at opposite ends of the surface of the square heat exchanger plate, and the above-mentioned shielding rib. A plurality of spacing ribs are provided at predetermined intervals between the ribs, and a plurality of holding ribs are provided on the back surface of the heat exchanger plate at right angles to the spacing ribs and at predetermined intervals, and the heat exchanger plate is sandwiched between the ribs. The heat exchange plates are integrally molded with resin to form a heat exchange plate, and the heat exchange plates are alternately shifted by 90 degrees, and between the interval ribs provided on the heat exchange plate surface of the heat exchange plate, adjacent heat exchangers are The holding rib provided on the back surface of the heat exchanger plate of the exchanger plate is positioned and a plurality of sheets are stacked one on top of the other.

Effect: With this configuration, the spacing ribs provided on the surface of the heat exchanger plates and the holding ribs provided on the back side of the adjacent heat exchanger plates hold each other's heat exchanger plates, and the primary airflow and secondary airflow are The flowing ventilation passages are stably formed every other layer.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 1 denotes two shielding ribs provided at opposite ends of the surface of a square heat exchanger plate 2, which have the same size as one side of the heat exchanger plate 2. A plurality of spacing ribs 3 are provided on the surface of the heat exchanger plate 2, and a plurality of spacing ribs are provided at predetermined intervals between the two shielding ribs 1. Reference numeral 4 denotes a plurality of holding ribs provided on the back surface of the heat exchanger plate 2, which are perpendicular to the spacing ribs 3 and are provided at predetermined intervals. Reference numeral 5 denotes a heat exchange plate, which has a heat exchange plate 2 in between, two shielding ribs 1 and a spacing rib 3 provided on the surface of the heat exchange plate 2, and a retaining rib 4 provided on the back surface of the heat exchange plate 2. It is integrally molded from resin. 6, the heat exchange plates 5 are alternately shifted by 90 degrees, and between the spacing ribs 3 provided on the surface of the heat transfer plates 2, the holding ribs 4 provided on the back surfaces of the adjacent heat transfer plates 2 are inserted. A plurality of heat exchangers are positioned and stacked, and the structure is such that a ventilation passage 7 through which a primary airflow flows and a ventilation passage 8 through which a secondary airflow flows are formed every other layer.

In the above configuration, the primary airflow is directed to the ventilation path 7 as shown by arrow A.
, and let the secondary airflow flow through the ventilation passage 8 as shown by arrow B.
The heat exchanger plate 2 exchanges heat between the primary airflow and the secondary airflow.

In addition, the manufacturing process of the heat exchanger 6 includes two steps: integral molding of the heat exchange plates 5 using a molding machine, and lamination with alternating shifts of 90 degrees.
Since only one step is required, the manufacturing cost can be reduced, and since the heat exchange plates 5 are molded with a molding machine, the dimensional accuracy is good, and there is no need to cut for finishing after laminating them to form the heat exchanger 6. Further, spacing ribs 3 provided on the surface of the heat transfer plate 2 and holding ribs 4 provided on the back surface of the heat transfer plate 2 adjacent between the spacing ribs 3
The spacer ribs 3 and the holding ribs 4 hold the heat exchanger plate 2 together, and the ventilation passages 7 for the primary airflow and the ventilation passages 8 for the secondary airflow are stably formed, and the resistance It becomes possible to reduce the loss, and therefore it becomes possible to reduce the size of the blower. In addition, since the shielding ribs 1, spacing ribs 3, and holding ribs 4 are made of resin, the heat exchanger 6 becomes extremely strong, eliminates the possibility of crushing during cleaning, and does not easily deform when dropped, etc. It becomes possible to withstand long-term use.

Effects of the Invention As is clear from the description of the above embodiments, the present invention has a plurality of ribs provided on the surface of the heat exchanger plate and a plurality of ribs provided on the back surface of the heat exchanger plate orthogonally to the ribs. A heat exchange plate is formed by sandwiching the plates and integrally molding them with resin.The heat exchange plates are alternately shifted by 90 degrees, and between the ribs on the surface of the heat exchange plate, the back side of the adjacent heat exchange plate is By positioning the ribs and stacking multiple sheets to form a heat exchanger, the manufacturing process is simplified and manufacturing costs are reduced, and the resin ribs increase the ventilation path area to reduce resistance loss and improve heat exchange. It has the effect of making the vessel stronger, less likely to change over time, and improving durability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a heat exchanger in an embodiment of the present invention;
Figure 2 is a 0-O cross-sectional view of the heat exchanger in Figure 1, Figure 3 is a perspective view showing the assembled state of the conventional heat exchanger, and Figure 4 is a completed product of the conventional heat exchanger. FIG. 1... Shielding rib, 2... Heat exchanger plate, 3
...... Spacing rib, 4... Holding rib, 5.
...Heat exchange plate, 6...Heat exchanger.

Claims (1)

[Claims] Two shielding ribs of the same size as one side of the heat exchanger plate provided at opposite ends of the surface of the square heat exchanger plate, a plurality of spacing ribs provided at predetermined intervals between the shielding ribs, and the heat transfer A heat exchange plate is obtained by integrally molding a plurality of retaining ribs on the back surface of the plate with resin, with the heat transfer plate sandwiched between them, and a plurality of holding ribs provided at a predetermined interval and perpendicular to the above-mentioned spacing ribs. 9 alternately
Heat exchangers are stacked with a plurality of heat exchanger plates with a 0 degree shift and between the spacing ribs provided on the surface of the heat exchanger plates, and the holding ribs provided on the back side of the heat exchanger plates of adjacent heat exchange plates. exchanger.