JPH0742992A - Heat exchanging ventilation fan - Google Patents

Abstract

PURPOSE:To obtain constantly a smooth shutter motion by a method wherein two shutters to open and close an air supply port and an air discharge port respectively are driven to open and close the shutters at the same time by an associated movement of gears, and the shutters are arranged in a central part of the backside of a body. CONSTITUTION:When a ventilation door is operated, a pulling string 16 is pulled to rotate a connection part 12c connected to the pulling string 16 around a bearing part 12a, so that a gear 12b provided outward the bearing part 12a may be rotated, and further, another gear 13b engaged with the gear 12b may be rotated in association around another bearing part 13a. By this, shutters 12 and 13 fixed to the bearings 12a and 13a are moved to the positions shown by dotted lines, to open an air supply port 4 and an air discharge port 5. At this time, the pulling string 16 is held at the position by an interlocking mechanism 15. When the operation is stopped, the pulling string 16 is operated to release the locking of the interlocking mechanism 15, make the gears 12b and 13b rotate together with the rotation of the connection part 12c and close the shutters 12 and 13.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In recent years, housing has become highly airtight, and as a result, the need for ventilation has increased. Above all, a heat exchange type ventilation fan that recovers the heat of the air discharged from the room to the room side through a heat exchanger. Is becoming the mainstream of ventilation fans.

The heat exchange type ventilation fan requires a shutter at the back of the main body to shut off indoor air and outdoor air when it is not in operation, and it must be able to be opened and closed by a drawstring operation.

For this reason, a heat exchange type ventilation fan of this type has conventionally been constructed as shown, for example, in Japanese Utility Model Publication No. 63-116834. The configuration will be described below with reference to FIGS. 7 to 9.

As shown in the figure, an air supply connection pipe 102 and an exhaust connection pipe 103 are attached to the back surface of an attachment plate 101 attached to the indoor wall so as to be embedded in the wall, and to the front surface. Body 104, and body 1
A louver 105 is attached to the front surface of 04.
Further, inside the main body 104 and the louver 105, a heat exchanger 106 and a fan casing 107 are built in, and in the fan casing 107, an air supply blower 108 is built in the mounting plate 101 side and an exhaust blower 109 is built in the louver 105 side. ing. The elastic member 1 is attached to the shutter 110 slidably mounted in the gap formed between the inner surface of the back surface of the main body 104 and the back surface of the fan casing 107.
11 is attached, and the other end of the elastic member 111 is connected to the main body 10
4 is connected to the shutter 110, and one end of the drawstring 113 of a series of drawstring devices including a drawstring 113 including an interlock mechanism 112 is connected to the shutter 110.

In the above structure, the outdoor air is sucked by the air supply blower 108 through the air supply connection pipe 102, is sucked into the room through the heat exchanger 106, and the indoor air is sucked by the exhaust air blower 109 and the heat exchanger 106 and the exhaust connection. Although the air is exhausted to the outside through the pipe 103, when the operation is stopped, the shutter 11 is moved by the elastic member 111.
0 to slide to close the ventilation opening 114 on the back surface of the main body 104, and when the operation is started, the shutter 110 is slid by the drawstring 113 to open the ventilation opening 11 on the back surface of the main body 104.
4 is opened and the position is held by the interlock mechanism 112.

[0007]

In such a conventional heat exchange type ventilation fan, since the shutter 110 is slid in the gap in the back surface of the main body 104, when the product is mounted on the wall surface, a slight distortion of the wall surface may cause a problem. The main body 104 is distorted,
The shutter 110 sometimes stopped moving. Also,
In cold regions, water attached to the shutter 110 freezes and the shutter 110 becomes difficult to move.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat exchange type ventilation fan having a shutter that can be opened and closed with certainty.

[0009]

In order to achieve the above object, a heat exchange type ventilation fan of the present invention has a first means, which is an air supply blower provided in an air supply passage for supplying outdoor air into a room. An exhaust blower provided in an exhaust passage for exhausting indoor air to the outside, a casing provided with a heat exchanger for exchanging heat between the indoor air and the outdoor air, and communicating with the air supply passage and the exhaust passage Two shutters that open and close the air supply and exhaust ports installed on the left and right, gears provided on each shutter so that the two shutters work together in a tooth profile, and one shutter via the interlock mechanism A drawstring device having a drawstring to be connected; and a main body provided with an elastic member for pulling the drawstring of the drawstring device in an anti-operation direction so that the shutter always closes the air supply port and the exhaust port. , By the operation of the drawstring A configuration that allowed to open and close sheets of shutters simultaneously.

The second means has a shutter part for opening and closing the air supply port and the exhaust port on one side, and a connecting part for connecting the drawstring and the connecting rod on the other side, and the main body is movably movable via a fulcrum. The two shutters provided in the above are provided.

The third means is provided with a shutter part for opening and closing the air supply port and the exhaust port on the left and right, and is provided movably on the main body with a central part as a fulcrum and movable by a drawstring operation. The configuration.

The fourth means is a gear provided on each of the two shutters for opening and closing the air supply port and the air exhaust port, and a fixed tooth profile member having a tooth profile with which the gear meshes and fixed to the main body. The sliding gear has a tooth profile with which the gear meshes, is provided slidably on the main body so as to face the fixed tooth profile member, and a drawstring operation connected to the sliding tooth profile member, The shutter position can be changed by sliding the toothed member.

[0013]

According to the present invention, with the structure of the above-mentioned first means, when the drawstring is pulled at the start of operation, the shutter connected to the drawstring is rotated. Then, the shutter geared with the gear provided on the shutter is also rotated in association with the shutter, the shutter is opened and the ventilation fan is operated.

Further, according to the structure of the second means, when the drawstring is pulled at the time of starting the operation, the two shutters connected to the drawstring via the connecting portion rotate about the fulcrum and the shutter is opened. At the same time, the ventilation fan will be operated.

Further, according to the structure of the third means, when the drawstring is pulled at the start of operation, one shutter connected to the drawstring rotates about the fulcrum, the shutter is opened, and the ventilation fan is opened. Will be driven.

According to the structure of the fourth means, when the drawstring is pulled at the time of starting the operation, the sliding tooth profile member slides, and the gear meshed with the fixed tooth profile member is rolled over the fixed tooth profile member. The shutter is opened by changing the position of the shutter having the gear wheel, and the ventilation fan is operated.

[0017]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
-It demonstrates, referring FIG. As shown in the figure, an air supply connection pipe 2 and an exhaust connection pipe 3 are arranged side by side on the rear surface of the mounting plate 1 mounted on the indoor wall with a space therebetween, and on the front surface of the mounting plate 1 the mounting pipe 1 is mounted. A main body 6 having an air supply port 4 and an exhaust port 5 communicating with an air supply connection pipe 2 and an exhaust connection pipe 3 provided on the plate 1 is provided, and a louver 7 is attached to the front surface of the main body 6. .

Inside the main body 6 and the louver 7, a heat exchanger 8 and a fan casing 9 are built in. The fan casing 9 has an air supply blower 10 on the mounting plate 1 side and an exhaust blower on the louver 7 side. 11 is built in, and the air supply passage of the air supply blower 10 is connected to the air supply port 2 via the heat exchanger 8.
The exhaust passage of the exhaust blower 11 is provided so as to exchange heat with the supply air passing through the heat exchanger 8, and is formed so as to communicate with the exhaust port 5. There is.

In the gap formed between the inner surface of the rear surface of the main body 6 and the rear surface of the fan casing 9, a shutter portion for opening and closing the air supply port 4 is rotatably provided by a shaft support portion 12a. A gear 12b is provided outside the shaft support 12a.
And the shutter 12 is formed.

A shutter portion for opening and closing the exhaust port 5 is rotatably provided by a shaft supporting portion 13a, and the shaft supporting portion 13a is provided.
A gear 13b is provided on the outer side of the shutter 12, and the shutter 13 is formed so that the gear 13b meshes with the gear 12b provided on the shutter 12.

An elastic member 14 whose one end is locked to the main body 6 is connected to the connecting portion 12c formed on the gear portion of the shutter 12 on one side so that the shutter 12 always closes the air supply port 4. Further, one end of the drawstring 16 of the series of drawstring devices including the drawstring 16 including the interlock mechanism 15 is connected to the connecting portion 12c.

In the above structure, when the drawstring 16 of the drawstring device is pulled when operating the ventilation fan, the drawstring 1
The connected connecting portion 12c of 6 rotates about the shaft supporting portion 12a. At this time, the gear 1 provided outside the shaft support 12a
2b rotates, and the gear 13 meshes with the gear 12b.
b also rotates in conjunction with the pivot 13a as a fulcrum, the shutter 12 and the shutter 13 move to the positions indicated by the dotted lines, the air supply port 4 and the exhaust port 5 are opened, and the drawstring 16 is moved by the interlock mechanism 15. The shutter 12 and the shutter 13 are held in the position, and are held in the open state.

The outdoor air is sucked into the air supply blower 10 through the air supply connection pipe 2 and the air supply port 4, and is supplied to the room through the heat exchanger 8. Further, when the indoor air is taken in by the exhaust blower 11 and passes through the heat exchanger 8,
Heat is exchanged with the supply air, and the air is exhausted to the outside through the exhaust port 5 and the exhaust connection pipe 3.

Next, when the operation is stopped, the drawstring 16 is operated so as to be released from the lock of the interlock mechanism 15, so that the drawstring 16 is elastic member 14.
Is pulled into the main body 6 by the elastic force of. At this time, the connecting portion 12c to which the elastic member 14 is connected rotates about the shaft supporting portion 12a as a fulcrum, and the gears 12b and 13b meshing with each other rotate due to this rotation, and the shutter 12 and the shutter 13 cause the shutter 12 and the shutter 13 to rotate. The air supply port 4 and the exhaust port 5 will be closed.

As described above, according to the heat exchange type ventilation fan of the first embodiment of the present invention, the shutter 12 and the shutter 13 are provided.
The gears 12b and 13b mesh with each other to simultaneously open and close the air supply port 4 and the exhaust port 5, so that a reliable opening and closing operation is possible, and the rear surface of the main body 6 is less susceptible to distortion. Shutter 12 and shutter 13 in the center
Since the shutter can be installed, the movements of the shutter 12 and the shutter 13 will not be deteriorated.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, one side has a connecting portion 18a to which the drawstring 16 and the connecting rod 17 are connected, the other side is provided with a shutter portion for opening and closing the air supply port, and the shaft supporting portion 1 is provided in the middle portion.
A shutter 18 rotatably provided via 8b,
A connecting portion 19a to which the other end of the connecting rod 17 is connected
On the other hand, a shutter portion for opening and closing the exhaust port 5 is provided, and the intermediate portion forms the shutter 19 which is rotatably provided via the shaft support portion 19b.

The connecting portion 19 of the shutter 19
An elastic member 20 whose one end is locked to the main body 6 is connected to a, a shutter 19 is provided so as to always close the exhaust port 5, and is connected to a connecting rod 17 connected to a connecting portion 19a of the shutter 19. The shutter 18 connected via the portion 18a is also configured such that the air supply port 4 is always closed.

In the above structure, when the drawstring 16 of the drawstring device is pulled when the ventilation fan is operated, the connecting portion 18a connected to the drawstring rotates the shutter 18 with the shaft supporting portion 18b as a fulcrum to supply the air supply port. 4 is opened, the connecting portion 19a, which is connected to the connecting portion 18a at one end and the other end of the connecting rod 17, is moved, the shutter 19 is moved about the shaft support portion 19b, and the exhaust port 5 is opened. Open, first
Air supply and exhaust are performed by the same operation as in the embodiment.

Next, when the operation of the ventilation fan is stopped, the drawstring 16 is operated so as to be unlocked from the interlock mechanism 15, so that the drawstring 16 is connected to the connecting rod 17 by the elastic force of the elastic member 20. The shutter 18 and the shutter 19 are returned to the original state by being pulled through the main body 6 through the main body 6, and the air supply port 4 and the exhaust port 5 are closed.

As described above, according to the heat exchange type ventilation fan of the second embodiment of the present invention, the connecting portions 18a and 19a are provided on one side, and the shutter portion for opening and closing the air supply port 4 and the exhaust port 5 is provided on the other side. The shutters 18 and 19 are rotatably provided with an intermediate portion as a fulcrum, and the connecting rod 1 is provided between the shutters 18 and 19.
7, the two shutters 18 and 19 simultaneously open and close the air supply port 4 and the exhaust port 5 by operating the drawstring 16, so that the opening and closing operation is reliable and the movements of the shutters 18 and 19 are improved. Becomes

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. As shown in the figure,
Shutter part 21 for opening and closing the air supply port 4 and the exhaust port 5 on both sides
a shutter 21 which forms a and 21b, has a shaft support 21c in the center, and is rotatably supported by the main body 6, and a shutter unit 2 for opening and closing the exhaust port 5 of the shutter 21.
Connect the end of the drawstring 16 of the drawstring device to the upper part of 1b,
An elastic member 22 whose one end is locked to the main body 6 is connected to the lower portion, and the shutter portion 21b pulled by the elastic member 22 is provided with a contact 23 on the main body 6 that abuts at the position where the exhaust port 5 is closed. The shutter 21 is configured such that the air supply port 4 and the exhaust port 5 are always closed by the shutter portions 21a and 21b.

In the above structure, when the drawstring 16 of the drawstring device is pulled when the ventilation fan is operated, the drawstring 16
The shutter portion 21b connected to is pulled upward, the shutter 21 rotates about the pivot portion 21c, the shutter portion 21a moves obliquely downward, the shutter portion 21b moves obliquely upward, and the air supply port 4 and the exhaust port are opened. 5 is opened at the same time, and air is supplied and exhausted by the same action as in the first embodiment.

Next, when the operation of the ventilation fan is stopped, the drawstring 16 is operated so as to be released from the lock of the interlock mechanism 15, so that the drawstring 16 moves the shutter portion 21b by the elastic force of the elastic member 22. The shutter 21 is pulled into the main body 6 through the shutter body 21b and moves to a position where the shutter portion 21b abuts against the shutter portion 21 and moves to the air supply port 4
Then, the exhaust port 5 will be closed.

As described above, according to the heat exchange type ventilation fan of the third embodiment of the present invention, the shutter parts 21a and 21 are provided on the left and right sides.
The central portion of the shutter 21 provided with b is rotatably provided as a fulcrum, and by rotating the shutter 21, the air supply port 4
Since the exhaust port 5 and the exhaust port 5 are opened and closed at the same time, it is possible to obtain a low-cost shutter device having a simple structure and reliably operating the shutter 21.

(Embodiment 4) A third embodiment of the present invention will be described below with reference to FIG. As shown in the figure,
The shutters 24 and 25 each having a shutter portion for opening and closing the air supply port 4 and the exhaust port 5 and having gears 24a and 25a formed on the outer circumference, and a toothed portion 26a in which the gears 24a and 25a of the shutters 24 and 25 mesh with each other. The gears 24a and 2 of the shutters 24 and 25 are formed in a straight line, and on the lower side of the shutters 24 and 25.
Fixed tooth profile member 2 fixed to the main body 6 so that 5a meshes with each other.
6, and above the shutters 24 and 25, a sliding tooth profile member 27 in which a tooth profile portion 27a in which the gears 24a and 25a of the shutters 24 and 25 mesh with each other is linearly formed is slidably provided on the main body 6.

Then, one end of the sliding tooth profile member 27 is connected to the drawstring 16 of the drawstring device, and the other end of the sliding tooth profile member 27 is connected to the elastic member 28 whose one end is locked to the main body 6. Then, when the sliding member 27 is pulled by the elastic member 28, the shutters 24 and 25 are adjusted in position so that the air supply port 4 and the exhaust port 5 are closed.

In the above structure, when the ventilation fan is operated, the pull cord 16 of the pull cord device is pulled when the pull cord 16 is pulled.
The sliding tooth profile member 27 connected to the sliding member slides, and the sliding tooth profile member 27 slides the gears 24a and 25a meshing with the sliding tooth profile member 27 while rolling on the fixed tooth profile member 26 to the right. The air supply port 4 and the exhaust port 5 which have been closed by the shutters 24 and 25 are opened, and air supply and exhaust are performed by the same operation as in the first embodiment.

Then, when the operation of the ventilation fan is stopped, the pulling cord 16 is operated so as to be released from the lock of the interlock mechanism 15, so that the sliding tooth profile member 2 is obtained.
7 is pulled by the elastic member 28, and the gears 24a and 25
a moves to the left while rolling on the fixed tooth member 26,
The shutters 24 and 25 provided with the gears 24a and 25a close the air supply port 4 and the exhaust port 5.

As described above, according to the heat exchange type ventilation fan of the fourth embodiment of the present invention, the shutters 24 and 25 provided with the gears 24a and 25a are moved by moving the sliding toothed member 27, and the air supply port 4 is moved. Since the exhaust port 5 is opened / closed, the shutter opening / closing operation is performed reliably, and since the moving direction of the sliding tooth profile member 27 is the same as the pulling direction of the drawstring 16, the drawstring operation can be performed easily.

[0041]

As is apparent from the above embodiments, according to the present invention, the two shutters for opening and closing the air supply port and the air exhaust port are simultaneously moved by gear interlocking to perform the opening and closing operation. Since the shutter can be opened and closed and the main body can be installed with a shutter at the center of the back surface of the main body that is not easily affected by distortion, it is possible to provide a heat exchange type ventilation fan with good shutter movement.

Further, since the two shutters for opening and closing the air supply port and the exhaust port are connected by the connecting rod, and the two shutters are simultaneously movable by the drawstring, the shutter can be formed in a simple shape.

Further, since the shutter for opening and closing the air supply port and the exhaust port is formed by one sheet, the structure is simple and the cost is reduced.

Further, since a gear is provided on the shutter for opening and closing the air supply port and the exhaust port so that the shutter can move by rolling on the linear tooth profile member, the opening and closing operation of the shutter can be performed accurately and smoothly. Become.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of a shutter device of a heat exchange type ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view showing an installed state of the heat exchange type ventilation fan of the first embodiment.

FIG. 3 is an exploded perspective view showing the configuration of the heat exchange type ventilation fan of the first embodiment.

FIG. 4 is a front view showing the configuration of a shutter device of the heat exchange type ventilation fan of the second embodiment.

FIG. 5 is a front view showing the configuration of a shutter device of the heat exchange type ventilation fan of the third embodiment.

FIG. 6 is a front view showing the configuration of a shutter device for a heat exchange type ventilation fan according to the fourth embodiment.

FIG. 7 is an exploded perspective view showing a configuration of a conventional heat exchange type ventilation fan.

FIG. 8 is a schematic cross-sectional view showing an installed state of the heat exchange type ventilation fan.

FIG. 9 is a front view showing a configuration of a shutter device of the heat exchange type ventilation fan.

[Explanation of symbols]

 4 air supply port 5 exhaust port 6 main body 8 heat exchanger 9 casing 10 air supply blower 11 exhaust air blower 12 shutter 12b gear 13 shutter 13b gear 14 elastic member 15 interlock mechanism 16 drawstring 17 connecting rod 18 shutter 18a connecting portion 18b shaft Shaft 19 Shutter 19a Connecting part 19b Shaft supporting part 20 Elastic member 21 Shutter 21a Shutter part 21b Shutter part 21c Shaft supporting part 22 Elastic member 24 Shutter 24a Gear 25 Shutter 25a Gear 26 Fixed tooth profile member 26a Tooth profile 27 Sliding tooth profile member 27a Tooth profile member 27a

Claims (4)

[Claims] 1. An air supply blower provided in an air supply passage for supplying outdoor air to the room, an exhaust air blower provided in an exhaust passage for exhausting indoor air to the outside, and between the indoor air and the outdoor air. A casing provided with a heat exchanger that exchanges heat with
Two shutters, which communicate with the air supply passage and the exhaust passage and are arranged side by side on the left and right, to open and close the air supply and exhaust ports;
Gears provided on each shutter so that the shutters of one sheet interlock with each other in a tooth shape, a drawstring device having a drawstring connected to the one shutter through an interlock mechanism, and the shutter is always provided with an air supply port. And a main body provided with an elastic member for pulling the drawstring of the drawstring device in an anti-operation direction so as to close the exhaust port, and heat exchange configured to open and close two shutters at the same time by operating the drawstring. Shaped ventilation fan. 2. A shutter part for opening and closing an air supply port and an exhaust port is provided on one side, and a connecting part for connecting a drawstring and a connecting rod is formed on the other side, and the shutter part is movably provided on the main body via a fulcrum. The heat exchange type ventilation fan according to claim 1, further comprising a plurality of shutters. 3. The shutter according to claim 1, further comprising shutter parts for opening and closing the air supply port and the exhaust port, which are provided on the left and right of the main body so that the shutter can be moved by a drawstring operation. Heat exchange type ventilation fan. 4. A gear provided on each of two shutters for opening and closing an air supply port and an exhaust port, a fixed tooth profile member having a tooth profile with which the gear meshes and fixed to the main body, and a tooth profile with which the gear meshes. A sliding tooth profile member that is slidably provided on the main body so as to face the fixed tooth profile member and a drawstring operation that is connected to the sliding tooth profile member; The heat exchange type ventilation fan according to claim 1, wherein the shutter position is variable.