JPS589145Y2 - heat exchange ventilation fan - Google Patents

Description

[Detailed explanation of the invention] This invention allows the heat exchanger to be freely replaced between the front and back, and allows ventilation to be carried out without passing through the heat exchanger during the middle seasons, such as spring and autumn, when the temperature difference between the outside air and the indoor air is small. This invention relates to a heat exchange type ventilation fan that obtains a large amount of air.

Conventionally, a heat exchange type ventilation fan that exchanges heat between intake air from indoors and intake air from outdoors in a heat exchanger has a heat exchange element 1a that is open on the negative side and three sides, as shown in FIG. A heat exchanger 1 formed in the shape of a square column with heat exchange elements 1b opening on two and four sides is supported by partition walls 3 protruding from each inner surface of a box body 2 having a rear plate. Each surface of the heat exchanger 1 and each partition wall 3
The interior is divided into four rooms 2a, 2b, 2C, 2(N,:::::), the front of the box body 2 is covered with a front cover 4, and during ventilation, an air supply fan 5 and an exhaust fan are rotated by a motor, Indoor air is drawn into the air intake port 69 of the front cover 4, the chamber 2a of the box body 2, and the heat exchanger 1 (three sides from the - side) as shown by the solid line arrow.
9 The motorcycle 2C of the box body 2, the exhaust fan, and the outdoor ventilation opening on one side of the rear plate are used to exhaust the outside air to the outside, and the outside air is passed through the outdoor ventilation lower on the other side of the rear plate, as indicated by the broken line arrow.

Two wheels 2b of the box body 2, a heat exchanger 1 (two to four sides), a concave chamber 2d of the box body 2, an air supply fan 5. The air flows through the air supply port 8 of the front cover 4 and is sent indoors, and in the heat exchanger 1, heat is exchanged between indoor air and outside air, and the outside air is cooled and heated by the indoor air, reducing indoor temperature changes. There is.

By the way, during the intermediate seasons such as spring and autumn, the temperature difference between the outside air and the room is small, so there is no need to exchange heat between the outside air taken into the room and the air discharged outside.

However, since the conventional example described above does not have a switching means for supplying and discharging intake air without passing it through the heat exchanger 1, the air volume is reduced by the heat exchanger 1 even in the intermediate period, and the ventilation capacity is reduced. low.

This idea was made with the above points in mind,
Next, this invention will be explained in detail with reference to the drawings from FIG. 2 onwards showing one embodiment thereof.

Note that the same symbols as above indicate the same thing.

First, as shown in FIGS. 2 and 3, first communicating passages 9, 9 are formed on both sides of the heat exchanger 1, communicating with the second and fourth sides of the heat exchanger 1. first communication path 9,
9, a second communicating path 10 communicating with the negative side and the third side.
form 10.

On the other hand, as shown in FIG.
A support frame 11 having an open portion corresponding to the opening is fixed to the support frame 11, and a first communication path 9, which blocks the first communicating path 9, is attached to the surface of the box body 2 of the support frame 11 corresponding to the wheel 2a and the recessed chamber 2d. 1 shielding plate 1
2j2, and a second communication passage 10.2j2 is formed on the surface of the support frame 11 corresponding to the chamber 2a of the box body 2 and the two wheels 2C.
A second shielding plate 13°13 is formed to shield the second shielding plate 10.

During seasons such as summer and winter when heat exchange is required, the heat exchanger 1 is inserted into the support frame 11 in the upright position shown in FIG. The other heat exchange element 1b is opened to two units 2b and four chambers 2d, and the first... The second shielding plate 12°13 prevents the first. The second communicating paths 9 and 10 are shielded.

Therefore, when the motor is driven to rotate the air supply fan and the exhaust fan, as shown by the solid arrow in FIG. The outside air flows into the first chamber 2a through the heat exchange element 1a and is discharged outside. On the other hand, as shown by the broken line arrow, the outside air that flows into the second wheel 2b loses heat because the second communicating path 10 is closed. It flows into the concave chamber 2d through the exchange element 1b and is sent indoors, and in the heat exchanger 1, indoor air and outside air are heat exchanged to cool and warm the outside air, and outside air close to room temperature is supplied indoors. Ventilation is performed without causing a drop in room temperature.

On the other hand, in the case of intermediate seasons such as spring and autumn, the heat exchanger 1 in the above state
is pulled out, the heat exchanger 1 is moved forward and backward as shown in FIG. 3, and fitted into the support frame 11. Second shielding plate 12.1
3, the first. The second communicating passages 9 and 10 are made non-polymerized, and the first communicating passage 9 is communicated with the first chamber 2a and the second wheel 2C, and the second communicating path 10 is communicated with the second wheel 2b and the recessed chamber 2d.

Therefore, when the motor is driven to rotate the air supply fan and the exhaust fan, as shown in FIG. The air flows into the chamber 2a and the recessed chamber 2d through the passageway 9 and the second communication passage 10, and is blown outdoors and indoors.

Therefore, since outside air and indoor air do not pass through the heat exchanger 1, the air volume increases and ventilation performance is improved.

As mentioned above, according to the heat exchange type ventilation fan of this invention, -
A heat exchange element having openings on one side and three sides, and a heat exchange element opening on two and four sides constitute a square prism-shaped heat exchanger, and a first one communicating with the - side and the third side is connected to the heat exchanger. A support frame is provided in which the heat exchanger is fitted into the box body, forming a communication path, and forming a second communication path that communicates with the two sides and the fourth side.
The support frame has a first .
A second shielding plate is provided, and when the heat exchanger is inserted into the support frame in the normal position,
The first and second shielding plates allow the first and second shielding plates. The second communicating path is shielded, and when inserted in the reverse position, the first. The second shielding plate is connected to the first shielding plate. By using non-polymerization in the second communication path, there is no need for a separate device,
By simply replacing the heat exchanger, it is possible to switch between heat exchange ventilation and non-heat exchange ventilation, making it possible to improve ventilation during intermediate seasons such as spring and autumn.

Furthermore, since the heat exchanger is removable, it is easy to clean the inside of the box and the heat exchanger.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of a conventional heat exchange type ventilation fan;
The following drawings show one embodiment of the heat exchange type ventilation fan of this invention. Figures 2 and 3 are perspective views of the heat exchanger in the summer/winter and spring/autumn seasons, respectively, and Figure 4 is a diagram of the box body. It is a perspective view with a part removed. 1... heat exchanger, la, lb... heat exchange element, 2... box, 2a...-chamber,
2b...2 cars, 2C...2 cars, 2d.
...Concave chamber, 9...First communication passage, 10...
...Second communication path, 12...First shielding plate, 1
3...Second shielding plate.

Claims (1)

[Scope of utility model registration request] A heat exchanger having an opening on one side and three sides and a heat exchange element opening on two and four sides constitute a square prism-shaped heat exchanger, and the heat exchanger is connected to the - side and the third side. 1st
A supporting frame into which the heat exchanger is fitted is provided inside the box, forming a communicating path and a second communicating path communicating with the two surfaces and the fourth surface, and the support frame is provided with the first. The first one each blocks the second communication path. A second shielding plate is provided, and when the heat exchanger is inserted into the support frame in the normal position, the first shielding plate is provided. Second
The shielding plate prevents the above-mentioned first. The second communicating path is shielded, and when the second communicating path is inserted in the reverse position, the first. The second shielding plate is connected to the first shielding plate. A non-polymerized heat exchange type ventilation fan is installed in the second communication path.