JPS5840117B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an airflow opposing type heat exchanger.

Conventionally, flat heat exchange materials are stacked at predetermined intervals to form parallel passages partitioned by the heat exchange materials, and secondary air and secondary air are alternately flowed through each passage to exchange heat. The exchanger is used for heat exchange of total heat and sensible heat of air.

Such heat exchangers include one in which the secondary air and the secondary air are orthogonal to each other, and one in which the secondary air and the secondary air are opposed to each other.

The former airflow orthogonal type has a simple structure and -h
It has the advantage that it is easy to separate all the secondary air, but on the other hand, the connection with the duct is complicated because the airflows are perpendicular to each other, and the heat exchange efficiency is lower than that of the latter type, making it difficult to exchange heat sufficiently. In order to do this, several heat exchangers must be lined up, which has the disadvantage that the device becomes large.

In addition, the latter type of airflow facing type is easy to connect with the duct and has good heat exchange efficiency, and can solve the disadvantages of the former. For example, it is necessary to blind the outside of the secondary air flow path of the primary air inlet opening, and about half of the primary air inlet opening becomes an effective opening, and the structure is more complicated than that of the former type. It has shortcomings.

The present invention is intended to solve the above-mentioned drawbacks, and an object of the present invention is to provide a heat exchanger with easy duct connection, simple structure, and excellent heat exchange efficiency.

The invention will now be described in detail in conjunction with the drawings.

Fig. 1 is a schematic perspective view of the heat exchanger according to the present invention, Fig. 2 is a detailed front view of the heat exchanger, and Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2. A large number of laminated heat exchange materials,
Reference numeral 2 denotes a disassembly frame that vertically connects the front and rear central portions of a box-shaped outer frame 2 that surrounds the heat exchange material 1 from now on.

Both ends of the heat exchange material 1 are hermetically joined to the inner wall of the outer frame 1, and the front and rear ends of the heat exchange material 1 are joined alternately left and right from the center.

As shown in detail in FIG.
This is done by bending the front and rear ends so that they touch alternately left and right from the center, and joining the tips of the upwardly bent bent portion 1a and the upwardly bent bent portion 1b.

In this case, openings 4°5.6.7 are formed in the unjoined portions of the front and rear ends of adjacent heat exchange materials.

The separation frame 3 has a width that is wide enough to separate the left and right joints of the heat exchange materials 1, and is hermetically sealed to the center of the front and rear ends of each heat exchange material 1.

The left and right portions partitioned by the J-port frame 3 on the front and rear surfaces of the heat exchanger having such a configuration correspond to the inlet and outlet portions for primary air and secondary air.

1. To explain the air flow using the case where the opening 4 is used as a primary air inlet, the cross-sectional shape of the flow path of the primary air flowing into the opening 4 gradually becomes It narrows vertically and spreads horizontally, becoming wider in the loha part as shown by the chain line in the figure, and in the haani part it changes in the opposite way to the e-mouth part.

-The air flows through the channel whose cross-sectional shape changes in this way and flows out from the opening 5.

The secondary air flows in through the opening 6 and flows out through the opening 7 through passages whose cross-sectional shape changes in the same way as described above and which alternately adjoin the primary air passage.

- Heat exchange between the secondary air and the secondary air is mainly carried out between the loha, but the eloha and hani parts actually only require a short length, so they do not affect efficiency much.

In the above description, an example has been described in which the openings 4 and 5, the button and the openings 6 and 7 face each other in the front and back, but as shown in FIG. It is also possible for 6' and 7' to be shifted left and right instead of facing each other in the front and back, and in this case the air flow will be as shown by the arrow lines in the figure.

yxh'', spacers may be inserted in the lower part to maintain the spacing so that the stacking pitch of each heat exchange material does not go out of order at the lower part.

As described above, according to the present invention, it is possible to achieve various excellent effects as described below.

1. Since the inlets and outlets of the secondary air and the secondary air are adjacent to each other on the front and back sides of the exchanger, duct connections are easy and do not take up much space.

2. The heat exchange rate is good because it uses a facing airflow system.

3. The structure is simple.

4. The length of the air flow path can be increased by connecting multiple heat exchangers in series.

[Brief explanation of drawings]

The drawings show an embodiment of the heat exchanger according to the present invention, and FIG. 1 is a perspective view showing the overall outline of the heat exchanger, FIG. 2 is a detailed front view of the heat exchanger, and FIG. The IJ■--■ cross-sectional view in the figure, the fourth rotation, and FIG. 5 are diagrams showing how to connect the front and rear ends of the heat exchange material. In the figure, 1 is a heat exchange material, 1a and 1b are bent parts, 2 is an outer frame, 3 is a separation frame, 4, 4', 5, 5'. 6, 6', 7, and 7' are openings.

Claims (1)

[Claims] 1. Both ends of a plurality of flat heat exchange materials are hermetically joined to the inner wall of a box-shaped outer frame with the respective heat exchange materials stacked at predetermined intervals, and the front and rear of each heat exchange material is The ends are joined alternately from the center to the left and right, and the upper and lower ends are joined to the outer frame at the center of the front and rear ends of each of the heat exchange materials, respectively, and have a width that spans the left and right joints of the heat exchange materials. A heat exchanger characterized by having a separation frame hermetically sealed together.