JPH07286745A - Ventilator - Google Patents

Abstract

PURPOSE:To provide a ventilator in which a ventilating area can be proportionally controlled in response to environmental conditions and a trouble, etc., scarcely occurs. CONSTITUTION:The ventilator comprises a case 1 having a plurality of through holes 1a in a predetermined array, an operating plate 2 having a plurality of through holes 2a arranged in the same array and shape as those of the holes 1a of the case and disposed linearly movably inside the case, and a thermally stretchable member 3 sealing volatile agent starting to expand at a predetermined temperature therein and fixed at its one end to the case. Since the other end of the member 3 of a contracted state in a positional relation in which the holes 2a of the plate 1 are not aligned with the holes 1a of the case 1 is coupled to the plate 2, the member 3 is stretched in response to a temperature change by the expansion of the agent in the stage of raising its temperature, the plate 2 is linearly moved by stretching to gradually superpose the holes 2a at the holes 1a of the case 1 to increase a ventilating area. On the other hand, in the stage of lowering its temperature, the plate 1 is linearly moved in an opposite direction to the above to gradually displace the holes 2a from the holes 1a of the case 1, thereby decreasing the ventilating area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device which is mainly used by being attached to a ventilation hole of a foundation or a wall surface of a house.

[0002]

2. Description of the Related Art Ventilation openings for indoor and outdoor ventilation are provided in the foundations and walls of houses, and recently, ventilation devices that automatically adjust the ventilation area according to the temperature have been attached to the ventilation openings. There is.

This ventilation device has a case which can be attached to a ventilation port, one or a plurality of louvers rotatably provided on the case, and a heat responsive means such as a shape memory alloy for driving the louver through a link mechanism. The ventilation area is adjusted by rotating the louver according to the temperature change, specifically, opening the louver when the temperature is high and closing the louver when the temperature is low.

[0004]

In the above conventional ventilator, since the louver is only fully opened or fully closed on the basis of a predetermined temperature, it is difficult to perform ventilation in accordance with environmental conditions, and insufficient ventilation or excessive ventilation is required. There is a problem that is likely to occur.

Further, since the louver is structured to rotate, a mechanism (link mechanism) for converting the power of the heat responsive means into a rotary motion is indispensable, which makes the structure complicated and easily causes a failure or the like. There is a point.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a ventilator capable of proportionally controlling a ventilation area according to a temperature change and less likely to cause a failure. .

[0007]

To achieve the above object, the invention of claim 1 has a case having a plurality of through holes in a predetermined arrangement, and a plurality of through holes having the same arrangement as the case through holes. The inside of the case is provided with an operating plate that is linearly movable, and a thermal expansion and contraction member whose one end is fixed to the case with a volatile agent that starts to expand at a predetermined temperature enclosed inside. It is characterized in that the other end of the heat-expanding / contracting member in a contracted state is connected to the operating plate in a positional relationship that does not match the through hole of the case.

According to a second aspect of the present invention, a case having a plurality of through holes in a predetermined arrangement, and an operating plate having a plurality of through holes in the same arrangement as the through holes of the case and rotatably arranged inside the case. And a thermal expansion and contraction member whose one end is fixed to the case, in which a volatile agent that starts expansion at a predetermined temperature is enclosed, and the through hole of the operating plate is in a shortened state in a positional relationship that does not match the through hole of the case. The other end of the heat expansion and contraction member is connected to the operating plate.

According to a third aspect of the present invention, in the ventilating apparatus according to the first or second aspect, a spring member for urging the operating plate in the contracting direction of the thermal expansion / contraction member is provided, and the operating plate is in the contracting direction of the thermal expansion / contraction member. It is characterized in that a spring member for urging is provided.

[0010]

According to the invention of claim 1, when the outside air temperature exceeds a predetermined temperature, the expansion of the volatile agent causes the thermal expansion / contraction member to expand in response to the temperature change, and the expansion causes the operating plate to linearly move to pass through the hole. Gradually overlaps the through hole of the case, and the ventilation area increases almost in proportion to the temperature rise. On the other hand, when the outside air temperature decreases from the temperature rising region, the heat-expansion member contracts according to the temperature change due to the contraction of the volatile agent, and the contraction causes the operating plate to move linearly in the opposite direction to the above-mentioned condition. The holes gradually disengage from the through holes of the case, and the ventilation area decreases almost in proportion to the temperature decrease.

According to the second aspect of the present invention, when the outside air temperature exceeds a predetermined temperature, the expansion and contraction of the volatile agent causes the thermal expansion / contraction member to expand in response to the temperature change, and the expansion causes the operating plate to rotationally move and the through hole thereof. Gradually overlaps the through hole of the case, and the ventilation area increases almost in proportion to the temperature rise. On the other hand, when the outside air temperature falls from the temperature rising region, the heat-expansion member contracts according to the temperature change due to the contraction of the volatile agent, and the contraction causes the operating plate to rotationally move in the opposite direction to that described above. The holes gradually disengage from the through holes of the case, and the ventilation area decreases almost in proportion to the temperature decrease.

According to the third aspect of the invention, the movement of the operating plate due to the decrease of the outside air temperature is performed by utilizing the spring pressure. Other functions are similar to those of the invention of claim 1 or 2.

[0013]

1 to 3 relate to a first embodiment of the present invention. FIG. 1 is a front view of a ventilation system, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. It is a rear view.

The ventilator according to the first embodiment comprises a case 1, an operating plate 2, a heat expansion / contraction member 3 and a coil spring 4.

The case 1 is formed of metal, resin, or the like in the shape of a flat rectangular tube having an open rear surface. On the front surface of the case 1, fifteen vertical elongated through holes 1a are provided at equal left and right intervals, specifically, at the same intervals as the through hole width. By the way, the upper and lower four through holes 1a adjacent to the bulging portion 1b, which will be described later, are somewhat shorter. In addition, the front right center of the case 1 is bulged in a semicircular cross section in order to secure a space for disposing the heat expansion / contraction member 3, and the bulging portion 1b also has two vertically elongated through holes 1c at the same intervals as described above. Is provided. Further, guide projections 1d for guiding the linear movement of the operating plate 2 are provided on the upper and lower ends of the inside of the case 1. Furthermore, a support protrusion 1e with which one end of the coil spring 4 is engaged is provided so as to project inside the case 1, more specifically, at a position where interference with the operating plate 2 can be avoided.

The operating plate 2 is made of metal, resin or the like.
It is formed in a substantially rectangular shape slightly smaller than the inner shape of the.
The operating plate 2 is provided with vertically elongate fifteen through holes 2a each having the same arrangement and the same shape as the through holes 1a of the case 1. Further, the center of the right side of the operating plate 2 is cut out in a rectangular shape in order to avoid interference with the thermal expansion / contraction member 3, and an elongated operating rod 2c is integrally or separately provided at the center of the cutout 2b. . Further, on the back surface of the actuating plate 2, a supporting projection 2d with which the other end of the coil spring 4 is engaged is projected.

The heat expansion / contraction member 3 is composed of a metal container whose peripheral surface is formed in a bellows shape, and has therein a volatile agent which starts expansion at a predetermined temperature, specifically an alcohol-based gas which starts expansion at 10 ° C. or It is filled with a liquid and allows expansion and contraction based on the expansion and contraction of the volatile agent. One end of this heat expansion / contraction member 3 is fixed to the inner surface of the case 1 via the pedestal 3a, and the bulging portion 1b is formed.
Is laterally arranged inside, and the other end is in contact with the operating rod 2c of the operating plate 2 via the cover member 3b.
The cover member 3b has a U-shaped cross-section, and two vertically elongated through holes 3c having the same arrangement and the same shape as the through holes 1c of the case 1 are provided on the surface adjacent to the case 1.

One end of the coil spring 4 is engaged with the support protrusion 1e of the case 1 and the other end thereof is engaged with the support protrusion 2d of the actuating plate 2, so that the actuating plate 2 extends in the direction of contraction of the heat expansion / contraction member 3. I am biased.

The operation of the ventilation device will now be described with reference to FIG. Vent area is zero (Figs. 1 and 2)
When the outside air temperature rises above 10 ° C. in the above condition), the thermal expansion / contraction member 3 expands due to the expansion of the volatile agent, and the expansion causes the operating plate 2 to act as the urging force of the coil spring 4 via the cover member 3b and the operating rod 2c. It moves in a straight line in opposition to the through hole 2 of the operating plate 2.
a starts to overlap with the through hole 1a of the case 1, the through hole 3c of the cover member 3b also starts to overlap with the through hole 1c of the case 1, and thereafter, the ventilation area gradually increases in accordance with the movement amount. Then, when the outside air temperature reaches 20 ° C., the through hole 2a of the operating plate 2 is completely aligned with the through hole 1a of the case 1, and the through hole 3b of the cover member 3b is completely with the through hole 1c of the case 1. In conformity, the working plate 2 is restricted in its movement by bringing its end edge into contact with the inner surface of the case. Since the thermal expansion / contraction member 3 gradually expands as the temperature changes, in the process of increasing the temperature from 10 ° C. to 20 ° C., the ventilation area increases almost in proportion to the temperature increase. By the way, with the through hole arrangement and shape of this embodiment, a maximum ventilation area of about 1/2 of the front surface of the case can be secured.

On the other hand, when the outside air temperature falls below 20 ° C. from the above-mentioned temperature rise region (state of FIG. 2), the thermal expansion / contraction member 3 contracts due to contraction of the volatile agent, and the contraction causes the operating plate 2 to become a coil spring. While linearly moving in the direction opposite to the above while receiving the urging force of 4, the through hole 2a of the operating plate 2 starts to come off from the through hole 1a of the case 1, and the through hole 3c of the cover member 3b also passes through the case 1. It starts to deviate from 1c, and thereafter, the ventilation area gradually decreases according to the movement amount. Then, when the outside air temperature reaches 10 ° C., the through holes 1a and 1c of the case 1 are completely closed, and the ventilation area returns to the state of zero (the state of FIGS. 1 and 2). In this case as well, the thermal expansion / contraction member 3 gradually shrinks with a change in temperature, so that in the temperature decreasing process from 20 ° C. to 10 ° C., the ventilation area decreases substantially in proportion to the temperature decrease.

As described above, in the ventilator of this embodiment, since the ventilation area can be proportionally controlled according to the temperature change, it is possible to perform ventilation in accordance with the environmental conditions, and it is possible to reliably prevent problems such as insufficient ventilation and excessive ventilation. .

Further, since the operating plate 2 is directly moved by the expansion and contraction of the thermal expansion / contraction member 3, a conventional motion converting mechanism is unnecessary, and the structure is simple, so that the product cost is low, and There is an advantage that failure is unlikely to occur for a long period of time.

5 and 6 relate to the second embodiment of the present invention. FIG. 5 is a front view of the ventilator, and FIG. 6 is a rear view of the ventilator.

The ventilator according to the second embodiment comprises a case 11, an operating plate 12, a heat expansion / contraction member 13 and a coil spring 14.

The case 11 is formed of metal, resin, or the like in the shape of a flat cylinder whose rear surface is opened. This case 11
A total of eight vertically elongated through-holes 11a are provided in the front of the above in the circumferential direction at intervals of 45 °.

The operating plate 12 is formed of metal, resin or the like in a circular shape slightly smaller than the inner shape of the case 11.
The actuating plate 12 is provided with eight vertically elongated through holes 12a in the same arrangement and shape as the through holes 11a of the case 11. Further, the actuating plate 12 is rotatably attached to the center of the back surface of the case 11 via the shaft pin 12b. Further, a cylindrical operating rod 1 is provided on the back surface of the operating plate 12.
2c is provided in a protruding manner, and a supporting protrusion 12d is provided adjacent to the operating rod 12c so that one end of the coil spring 14 is engaged therewith.

The thermal expansion / contraction member 13 is composed of a metal container whose peripheral surface is formed in a bellows shape, and has therein a volatile agent which starts expansion at a predetermined temperature, specifically an alcohol-based gas which starts expansion at 10 ° C. or It is filled with a liquid and allows expansion and contraction based on the expansion and contraction of the volatile agent. The heat expansion / contraction member 13 has one end fixed to the inner surface of the case 1 via a pedestal 13a and arranged vertically inside the case 11, and the other end thereof abuts on the operating rod 12c of the operating plate 12. Also, pedestal 1
On the side of the actuating plate 12 of 3a, a supporting protrusion 13b is provided so as to be engaged with the other end of the coil spring 14.

One end of the coil spring 14 is engaged with the support projection 12d of the operating plate 12, and the other end is on the case side (the pedestal 13).
It is engaged with the support protrusion 13b of a) and urges the operating plate 12 in the contracting direction of the thermal expansion / contraction member 13.

The operation of the ventilation device will be described with reference to FIG. Vent area is zero (Figs. 5 and 6)
When the outside air temperature is 10 ° C. or higher in the above condition, the expansion and contraction of the volatile agent causes the thermal expansion / contraction member 13 to expand, and the expansion causes the operating plate 12 to rotate and move against the urging force of the coil spring 14. The through hole 12a of 12 is the through hole 11 of the case 11.
The aeration area gradually increases in accordance with the moving amount after that. Then, when the outside air temperature reaches 20 ° C., the through hole 12a of the operating plate 12 completely matches the through hole 1a of the case 1, and the operating plate 12 is partially attached to a stopper (not shown) provided in the case 11. For example, the movement is restricted by abutting the support protrusion 12d or a protrusion formed on another portion.
Since the thermal expansion / contraction member 13 gradually expands with a change in temperature, in the temperature increasing process from 10 ° C. to 20 ° C., the ventilation area increases substantially in proportion to the temperature increase. By the way, with the arrangement and shape of the through holes of this embodiment, a maximum ventilation area of about 1/4 of the front surface of the case can be secured.

On the other hand, when the outside air temperature falls below 20 ° C. from the above-mentioned temperature rise region (state of FIG. 7), the thermal expansion / contraction member 13 contracts due to contraction of the volatile agent, and the contraction causes the operating plate 12 to contract.
Receives the urging force of the coil spring 14 and linearly moves in the opposite direction to the above, the through hole 12a of the operating plate 12 begins to come off from the through hole 11a of the case 11, and thereafter the ventilation area gradually decreases according to the moving amount. . Then, when the outside air temperature reaches 10 ° C., the through hole 11a of the case 11 is completely closed, and the ventilation area returns to the state of zero (the state of FIGS. 5 and 6). In this case as well, the thermal expansion / contraction member 13 gradually shrinks with a change in temperature, so that in the temperature decreasing process from 20 ° C. to 10 ° C., the ventilation area decreases substantially in proportion to the temperature decrease.

As described above, also in the ventilator of this embodiment, the ventilation area can be proportionally controlled according to the temperature change, and the same effect as that of the first embodiment can be obtained.

In each of the above-described embodiments, the case and the actuating plate are provided with the vertically long through holes. However, if the arrangement and the shape are the same, the shape and the number of the through holes are variously changed. In the second embodiment, the ventilation area can be increased by forming the through hole into a fan shape.

Further, although the coil spring for urging the operating plate in the contracting direction of the thermal expansion / contraction member is provided, the coil spring is not always necessary if the operating plate is connected to the thermal expansion / contraction member.

[0034]

As described above in detail, according to the first and second aspects of the present invention, since the ventilation area can be proportionally controlled according to the temperature change, it is possible to perform the ventilation in accordance with the environmental conditions, and the insufficient ventilation or the ventilation. It is possible to reliably prevent problems such as excess. In addition, since the operating plate has a structure in which it is moved directly by the expansion and contraction of the heat expansion and contraction member, the conventional motion conversion mechanism is unnecessary,
Since the structure is simple, there are advantages that the product cost is low and the failure is unlikely to occur for a long period of time.

According to the third aspect of the present invention, the movement of the operating plate due to the decrease in the outside air temperature can be accurately performed by utilizing the spring pressure, and the spring pressure makes it possible to smoothly perform the lengthening operation of the thermal expansion / contraction member. There is an advantage that can be done. Other effects are similar to those of the invention of claim 1 or 2.

[Brief description of drawings]

FIG. 1 is a front view of a ventilation device according to a first embodiment of the present invention.

2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a rear view of the operating plate shown in FIG.

FIG. 4 is an explanatory diagram of the operation of the ventilation device.

FIG. 5 is a front view of a ventilation device according to a second embodiment of the present invention.

FIG. 6 is a rear view of the ventilation device according to the second exemplary embodiment of the present invention.

FIG. 7 is an explanatory diagram of the operation of the ventilation device.

[Explanation of symbols]

1 ... Case, 1a, 1c ... Through hole, 2 ... Operating plate, 2a ... Through hole, 3 ... Thermal expansion / contraction member, 3c ... Through hole, 4 ... Coil spring, 1
DESCRIPTION OF SYMBOLS 1 ... Case, 11a ... Through hole, 12 ... Actuating plate, 12a ... Through hole, 13 ... Thermal expansion / contraction member, 14 ... Coil spring.

Claims (3)

[Claims] 1. A case having a plurality of through holes in a predetermined arrangement, and an operating plate having the same arrangement and the same shape as the through holes of the case and having a plurality of through holes arranged linearly movable inside the case. It is equipped with a thermal expansion and contraction member that is filled with a volatile agent that starts expansion at a predetermined temperature and whose one end is fixed to the case.The through hole of the operating plate is in a shortened state in a positional relationship that does not match the through hole of the case. The ventilation device, wherein the other end of the heat expansion / contraction member is connected to the actuation plate. 2. A case having a plurality of through holes in a predetermined arrangement, and an operating plate having the same arrangement and the same shape as the through holes of the case and having a plurality of through holes and rotatably arranged inside the case. It is equipped with a thermal expansion and contraction member that is filled with a volatile agent that starts expansion at a predetermined temperature and whose one end is fixed to the case.The through hole of the operating plate is in a shortened state in a positional relationship that does not match the through hole of the case. The ventilation device, wherein the other end of the heat expansion / contraction member is connected to the actuation plate. 3. A spring member for urging the operating plate in the contracting direction of the thermal expansion / contraction member is provided, and the other end of the thermal expansion / contraction member is brought into contact with the operating plate. Ventilation device described.