JPS589059Y2 - damper mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a damper mechanism that controls the amount of air supplied from a blower, and provides a damper mechanism that is particularly suitable for use in combustion appliances and air conditioning equipment.

Conventionally, the damper mechanism consists of a fixed damper and a rotary damper, so it is not easy to set or finely adjust the amount of air depending on the amount of fuel supplied.

For example, if a shaft is attached directly to the damper and driven, fine adjustments can be made by changing the rotation angle of the shaft, but depending on the shape of the hole in the damper, increasing or decreasing the rotation angle will greatly increase or decrease the amount of air, so it may be difficult to make adjustments.

In addition, when the damper is driven using power from a solenoid, etc., adjustments can be made by slightly changing the position of the power source or by changing the length of the damper drive wire, but these methods allow for fine adjustments. Either it is not possible to make fine adjustments, or it takes a considerable amount of time to make fine adjustments, depending on the power source and the attachment force of the wires.

The present invention was developed in view of the drawbacks of the conventional examples described above, and its purpose is to provide a damper mechanism that can set the amount of air according to the amount of fuel supplied, large or small, and easily finely adjust the set diameter. It provides:

Another object is to attach additional air volume adjustment means to the damper mechanism so that it can be easily operated.

The present invention will be explained below with reference to drawings showing embodiments.

First, the schematic structure will be explained with reference to FIG. 1 and FIGS. 6 to 8. This mechanism mainly consists of holes 101-1, 101-1, and
101-2, 101-3... are drilled from the first damper 1, second damper 2, and damper mounting plate 3, and the first
The damper 1 is a movable damper, the second damper 2 is an adjustable damper, and the damper mounting plate 3 is a fixed damper.

This mechanism is housed in an air supply box 4, and air is supplied to the holes 101-1, 102-1, . . . of the first damper 1 by a blower motor 5.
to the holes 101-2, 102-2, etc. of the second damper 2.
through the holes 101-3, 1023, etc. of the damper mounting plate 3.
, the gas passes through the supply cylinder 6, the combustion cylinder 7, the heat exchanger 8, and is discharged from the exhaust pipe 9.

In FIG. 1, numeral 10 is a filter for removing dust from the air, and numeral 11 is an auxiliary air volume adjustment means.

In addition, holes 101-1, 101-2, 101 in the first damper 1, second damper 2, and damper mounting plate 3
The amount of opening is changed to large or small depending on the overlap of -3..., and the amount of air supplied is determined by this, and in the embodiment, a mechanism of the type that can obtain an air amount of 2 points is shown.

Mainly referring to FIG. 2, the first damper 1 is provided with a rod-like engaging portion 12 and a stop portion 14 formed of a plate with a cross-sectional shape and having a hole 13.

Further, the second damper 2 is provided with an arc-shaped adjustment hole 15 and is supported by a screw 30 so as to be rotationally adjustable.

Then, the first damper 1 and the second damper 2 are overlapped and pivoted to the damper mounting plate 3 with rivets 16.

Furthermore, a solenoid 17, a first movable stopper 18, an arm 19, etc., which attract the movable piece 17a when energized are arranged on the damper mounting plate 3.

The arm 19 rotates around a pivot pin 20, has a long hole 21 at one end, inserts the engaging part 12 into the hole 21, and has a hole (not shown) at the other end. , is connected to the movable piece 17a of the solenoid 17 by a pin 22.

Therefore, in the first damper 1, one end of the arm 19 on the elongated hole 21 side moves in the direction A in FIG. The amount of the opening O formed by the overlapping of the mounting plates 3 is increased.

(Figures 3 and 4 show the state with a large opening amount.

The states shown in FIGS. 2 and 5 are when the solenoid 17 is not energized, that is, the opening amount is small.

Reference numeral 23 denotes a spring that is hooked on an L-shaped plate 24 that has one end hooked to the approximate center of the arm 19 and the other end fixed to the damper mounting plate 3, and is extended when the solenoid 17 is energized, and when the energization is turned off, The accumulated force acts to return the arm 19 in the direction B.

The first movable stopper 18 is rod-shaped, and the damper mounting plate 3
The burring screw part 2 of the auxiliary plate 25 is spot-fixed to
5a so that it can be moved left and right through the jig insertion hole 18a.

As a result, the stop portion 14 of the first damper 1 that comes into contact with the first movable stopper 18 is also substantially movable in the left-right direction.

In FIGS. 2 and 5, when the first movable stopper 18 is moved to the left, the stop portion 14 is also substantially moved to the left, causing the first damper 1 to rotate clockwise and opening the stopper 18 to the left. A small amount can be made slightly larger.

Conversely, if the first movable stopper 18 is moved in the right direction R, the first damper 1 is rotated counterclockwise and the opening 0 can be narrowed slightly.

In addition, in the first movable stopper 18, 18b is a fixed nut, and 18c is a spring interposed between the auxiliary plate 25 and the fixed lug 18b.The movable stopper 18 can be easily moved by the fixed lug N8b and the spring 18c. This prevents the product from becoming damaged.

By the way, the auxiliary adjustment means 11 consists of a slide plate 11-1 having a square hole 11a and a slide receiving plate 112 fixed to the damper mounting plate 3 and having the same square hole 11a as the slide plate 11-1. The amount of air can be adjusted by the opening amount O' determined by the overlapping of the square holes 11a.

For example, when the power frequency of the blower motor 5 is changed, the screw 2 passed through the long hole 26 of the damper mounting plate 3
7, and slide plate 11-1 interlocked with screw 27.
Move it in the left and right direction and adjust the opening amount O' to make the air amount the same as before the change.

28 is a second movable stopper, which is similar to the movable stopper 1
8, it is screwed into and supported by the burring screw portion 25b of the auxiliary plate 25, and is movable in the left-right direction through the jig insertion hole 28a.

The second movable stopper 28 is prevented from easily moving by the fixed nut 28b and spring 28c.

In addition, 29 is a packing, which includes the air supply box 4 and the slide receiving plate 1.
Interposed between 1 and 2.

In the embodiment configured as described above, when a large amount of air is taken in, the solenoid 17 is
is energized to rotate the arm 19 in the direction A against the spring 23, thereby rotating the first damper 1 clockwise and widening the opening O (see FIG. 3).

Conversely, when taking in a small amount of air, if the solenoid 170 is de-energized from the state shown in Fig. 3, the spring 23
The arm 19 is returned to the direction B by the action of , thereby rotating the first damper 1 counterclockwise and narrowing the opening O (see Figures 2 and 5).0 Now, in adjusting the air amount. When setting a small opening amount, first make a rough adjustment by loosening the screw 30 and moving the second damper 2 with the solenoid 17 released from suction to obtain an approximate small opening amount.

Once the small opening amount has been roughly adjusted, the first movable stopper 18 is moved in the left and right direction to obtain an appropriate small opening amount.

Next, the setting of the large opening amount is almost determined by the setting of the small opening amount, but fine adjustment is performed by moving the second movable stopper 28 in the left-right direction.

Further, when adjusted in this manner, when the solenoid 17 is energized, the stop portion 14 hits the second movable stopper 28, the first damper 1 stops, and an appropriate large opening is formed, and when the solenoid 17 is de-energized, the stop portion 14 hits the first movable stopper 18, the first damper 1 stops, and forms an appropriate small opening.

As described above, the present invention consists of a rotatable first damper 1, a second damper 2 that overlaps with the first damper 1 and is adjustable, and a damper mounting plate 3. Holes 101-1..., 10 are provided in the dampers 1, 2 and the damper mounting plate 3.
1-2..., 101-3... are bored, and these holes 101-1..., 101-2..., 101-3...
A mechanism that changes the opening amount to large or small by overlapping the above-mentioned first damper 1 with an engaging part 12 and a stop part 14.
One end of an arm 19 pivotally supported on the damper mounting plate 3 is locked to the engaging portion 12, and the first damper 1 is rotated and stopped by a solenoid 17 connected to the other end of the arm 19. The second damper 2 can be rotated for fine adjustment by the second movable stopper 18.28 that abuts the damper 14, and the opening amount can be variably set by forming an adjustment hole 15 in the second damper 2. Since the damper mechanism is characterized by the following, coarse adjustment can be performed with the second damper 2, and fine adjustment can be performed with the first and second movable stoppers 18, 28, so that large and small opening amounts can be smoothly adjusted. can be set, and large and small opening amounts can be set independently, and the damper mounting plate 3
Since the long hole 26 for moving the slide plate 11-1 and thus the screw 27 is bored in the damper mounting plate 3, it is possible to adjust the slide plate 111 on the damper mounting plate 3 as well as the adjustment of the damper. .

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a combustion appliance to which an embodiment of the present invention is applied;
The figure is a partially cutaway perspective view of the embodiment of the present invention, FIG. 3 is an explanatory view of the operation of the embodiment of the present invention, showing a case where the opening amount is a dog, and FIG. 4 is a partially sectional view of FIG. 3, and FIG. 5 is an explanatory view of the operation similar to FIG. 3, but shows a case where the opening amount is small, FIG. 6 is a front view of the first damper according to the embodiment of the present invention, and FIG.
The figure is a front view of a second damper according to an embodiment of the present invention, and FIG. 8 is a front view of a damper mounting plate according to an embodiment of the present invention. 1...First damper, 2...Second damper, 3...Damper mounting plate, 101-1.10
1-2. 101-3...hole, 12...engaging portion,
14...stop part, 15...adjustment slot,
17... Solenoid, 18... First movable stopper, 19... Arm, 28...
...Second movable stopper.

Claims (1)

[Scope of utility model registration request] It consists of a rotatable first damper, an adjustable second damper that overlaps with the first damper, and a damper mounting plate, and holes are formed in the first and second dampers and the damper mounting plate. ,
The mechanism changes the opening size by overlapping these holes, and the first damper has an engaging part and a stop part, and the engaging part has an arm pivoted to the damper mounting plate. One end is locked, and the first damper is rotated by a solenoid connected to the other end of the arm, and fine adjustment rotation is possible by a movable stopper that abuts the stop part, and the second damper has an adjustment slot. A damper mechanism characterized in that the size of the opening can be variably set by providing a hole.