JPS6152896B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchange type ventilation system, and more particularly to a ventilation system having a structure in which a heat exchange element can be commonly rotated by a motor for rotating a fan.

Traditionally, it was developed as a heat exchange type ventilation device.
19536, etc., but the rotational structure of the heat exchange element was complicated in that it was lightweight and inexpensive enough for home use.

The object of the present invention is to replace the conventional motor that required two motors, one for the blower and the other for rotating the heat exchange element, by using a combination of a worm gear on the motor shaft and a spur gear that engages with the worm gear to reduce the speed in the right angle direction and rotate the sub-shaft. To provide a heat exchange type ventilation fan which has a structure in which a rotary type heat exchange function is performed using a single electric motor.

The ventilation device of the present invention is used by being attached to a room that is being heated or cooled. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below based on the drawings. An air supply path 2 and an exhaust path 3 are formed in the case 1, and an electric motor 8 that simultaneously drives and rotates an air supply fan 4, an air supply duct 5, an exhaust fan 6, an exhaust duct 7, and a pair of fans is provided. Built-in. A indicates the air supply flow, and B indicates the exhaust flow. In addition, according to the arrangement shown in the embodiment of the present invention, the fans and ducts can be assembled in opposite directions and used, thereby making it possible to have exactly the same specifications. Electric motor 8 is attached to partition plate 9. An outdoor intake port 10 and an outdoor exhaust port 11 are opened on the back side of the case 1, and a wind direction plate 12 is fixed. A heat exchange element 13 (hereinafter referred to as the element), a frame 14 for the element (hereinafter referred to as the frame), and a grill 15 are arranged on the front side of the case 1, and furthermore, a front air filter 16 is placed in front of the element 13, and a rear air filter 16 is placed behind the element 13. This is a structure in which an air filter 17 is arranged. The functions of the frame 14 are roughly divided into three. The first role is to cover and protect the element 13 with strength, to form an air passage, and to serve as a cover that prevents air supply and exhaust air from mixing and escaping, especially on the indoor side surface of the element 13. The cylindrical portion 18 corresponds thereto. Second, especially on the side facing the blower, there is a pressure difference between positive pressure on the supply air duct side and negative pressure on the exhaust duct side, so even if the supply air enters from outside, it is not supplied indoors and goes directly to the exhaust side. Easy to flow. To prevent this, it serves as a sealing surface between supply and exhaust. Arm part 19
corresponds to this. The third is a bearing function that rotatably supports the element 13, specifically, supports the element shaft 20. The support portion 21 corresponds to this. The details of the support part 21 are as shown in FIG. 3 with the element 13 removed.
It is formed of a bearing part 21a that rotatably supports the element 13, and a bowl-shaped part 21b that engages with the inner periphery of the element 13. As shown in FIG. 1, the rotation of the element shaft 20 begins with the rotation of the worm 2
3. The forward-extending subshaft 27 rotates, which is transmitted by the engagement of the worm wheel 24, gear A25, and ball clutch 26, and the shaft coupling portion 27a and gear B2 are rotated.
7. Driven by engagement of gear C28.

The reason for providing the gear joint is first that element 1
3 to the required rotation speed, the distance between the second sub-shaft 27 and the element shaft 20 is corrected, and from the viewpoint of ease of assembly, the shaft coupling portion 27a may be assembled with the frame 14 into the case 1 in a later process. This is because it has the advantage of having a bonding structure that can be combined and simply combined. A coupling cover 30 mechanically supports the coupling part and protects it from air pollution, and is formed integrally with the bowl-shaped part 21b.

FIG. 4 shows the detailed structure inside the cylindrical portion 18.

The element 13 is detachably engaged with the element shaft 20 as shown in the exploded view of FIG.
It is fixed with a knob 31.

In the ventilation system of the present invention, the principle of producing heat exchange action will be briefly described. The configuration of a pair of fans creates an intake air flow A and an exhaust air flow B, and an element 13 is placed across these two forcedly opposing flows, and the element 13 rotates at a low speed to transfer heat between the flows. cause Therefore, heat loss in a heated or cooled room can be reduced and a ventilation effect can be obtained. The element 13 is made by overlapping corrugated paper and flat paper and winding them into a spiral shape.

According to one embodiment of the present invention, the element 13 is arranged on the indoor side of the blower, and the element shaft 20
Since the element 13 is supported by the support part 21 provided in the frame 14 in only one direction, there is an advantage that the element 13 can be attached and detached by simply pulling it out toward the indoor side.

According to the configuration of the present invention, the main shaft 22 of the electric motor 8 extends on both sides of the outer cover, and the air supply fan 4 and the exhaust fan 6 can be rotated simultaneously to generate an exhaust flow (B) and an air supply flow (A). By engaging the worm 23 of the main shaft 22 provided on the side of the exhaust fan 6 and the worm wheel 24, a sub-shaft 27 extending in a T-shape with the main shaft can be taken out. For the parallel supply air flow A and exhaust air flow B, the element 13 is arranged to cross the two flows. In this respect, the T-shaped configuration of the present invention is convenient. Further, since the subshaft 27 is arranged closer to the electric motor than the support part of the exhaust fan 6, the distance from the element shaft 20 is close, and the structure of the shaft coupling part 27a can be simplified. The main shaft 2 is located close to the bearing part of the electric motor 8.
Since two worms 23 are provided, the vibration of the worm part during rotation of the main shaft is small, and reliability is high in terms of life. A subshaft 27 is arranged outside the exhaust duct 7,
It has advantages such as the ease of assembling the exhaust duct 7. The most important effect of the present invention is that the conventional rotary heat exchange system requires two electric motors, which complicates the structure and increases the cost.Only one electric motor is required, and even the wiring process is taken into consideration. It has the advantages of simple structure and low cost. In addition, from the point of view of rotational torque, since the deceleration is taken out from the electric motor, a large required torque can be obtained. When changing the ventilation air volume by controlling the rotation speed of the electric motor, increasing the ventilation air volume will reduce the heat exchange performance, so it is necessary to speed up the rotation of the element 13 to cope with this, but with the configuration of the present invention, the fan If the rotation of the element 13 is accelerated, the rotation of the element 13 increases accordingly, which is of great practical value in that it improves the heat exchange performance. By operating the element 13, even if the electric shaft 20 rotates, the ball clutch 27 in the electric motor 8 is operated to prevent damage to the worm gear. By operating a wire at the ball clutch (not shown), it is possible to prevent the element 13 from rotating, and it is possible to provide simple ventilation without heat exchange during seasons such as spring.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a heat exchange type ventilation device showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the central cross section of the element part in Fig. 1, and Fig. 3 is a first view with the element part removed. 4 is a perspective view of the frame, FIG. 5 is an exploded perspective view of element-related parts, and FIG. 6 is a sectional view of the electric motor. 1... Case, 2... Air supply path, 3... Exhaust path,
4... Air supply fan, 5... Air supply duct, 6...
Exhaust fan, 7... Exhaust duct, 8... Electric motor, 9... Partition plate, 10... Outdoor intake port, 11...
...Outdoor exhaust port, 12...Wind direction plate, 13...Heat exchange element, 14...Element frame, 1
5...Grille, 16...Front air filter, 17...Relief air filter, 18...Cylinder part, 19...Arm part, 20...Element shaft,
21... Support part, 21a... Bearing part, 22... Main shaft, 23... Worm, 24... Worm wheel, 25... Gear A, 26... Ball clutch,
27... Subshaft, 28... Gear B, 29... Gear C, 30... Coupling cover, 31... Knob.

Claims (1)

[Claims] 1 Install air supply path 2 and exhaust path 3 in parallel in case 1,
A heat exchange element 13 is provided that rotates simultaneously across two flows, the supply air flow A flowing in the air supply passage 2 and the exhaust flow B flowing in the exhaust passage 3.
In the case where an air supply fan 4 is attached to one end of the air supply fan 4 and an exhaust fan 6 is attached to the other end of the motor a, a motor shaft 8a is mounted on the motor shaft 8a between one of the fans 4 and 6 and the electric motor 8. A heat exchange type ventilation device characterized in that a subshaft 27 is provided to slow down and take out the rotation, and the subshaft 27 is configured to rotate the heat exchange element 13 at a low speed.