JP3524048B2 - Indoor air inlet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor air supply port for supplying air into a room.

[0002]

2. Description of the Related Art Ducts that are connected to a duct connected to the outside of the room when the pressure inside the room is reduced due to the use of a ventilation fan and the pressure becomes negative than the outside of the room. Various types have been proposed as an indoor air supply port for supplying air via the.

By the way, an air supply mechanism is indispensable to the indoor air supply port for supplying air into the room only when the inside pressure of the room becomes more negative than that outside the room. This is because, if there is no air supply mechanism, noise outside the room always enters the room through the duct and the indoor air supply port, and that insects easily enter the room, and heating This is because the problem arises that the warmed indoor air leaks out of the room via the indoor air supply port.

Therefore, as shown in FIGS. 1 and 2, the conventional indoor air supply port is provided with a closing plate 33 in a ventilation passage 32 in a tubular portion 31 connected to a duct, and the closing plate 33 is provided. The air passage 32 is normally closed by the closing plate 33, and when the pressure in the room becomes more negative than the outside, the closing plate 33 rotates to open the air passage 32. An air supply mechanism is provided.

However, this conventional air supply mechanism has the following problems.

That is, in order to make the closing plate 33 rotatable, a shaft 34 is installed in the air passage 32, and the closing plate 33 is pivotally attached to the shaft 34. For example, the shaft 34 is provided at the center of the air passage 32. , The shaft 34 is positioned at the center of gravity of the closing plate 33, so that the closing plate 33 is easily rotated, and the ventilation of the ventilation path 32 causes the closing plate 33 to vibrate in the front-back direction in a short cycle to generate noise. To do. Therefore, this closing plate 33
In order to prevent the vibration of the spring, a configuration has been proposed in which the closing plate 33 is weakly biased to one side by a spring, but since the bias by the spring gradually decreases due to aging, there is a problem that maintenance is required. There is a problem that malfunction of the closing plate 33 is likely to occur due to variations in the bias of the springs.

Further, for example, in the structure in which the shaft 34 is installed above the center of the ventilation path 32, when the closing plate 33 is rotated, the outer edge of the closing plate 33 is brought into contact with the inner wall of the tubular portion 31 to rotate. A circular closing plate that matches the shape of the ventilation passage 32 because it may become impossible
33 cannot be adopted. Thus, for example,
The ventilation path 32 is made pentagonal in a vertical cross-section by partially blocking 32, and it is necessary to take measures such as adopting a blocking plate 33 having a shape that matches the ventilation path 32 having a pentagonal vertical cross-section. In this case, there arises a problem that the air passage 32 becomes narrow, and it is troublesome to partially close the air passage 32 so that the closing plate 33 can rotate.

Therefore, as shown in FIGS. 1 and 2, a fixed closing body 35 for closing a part of the upper portion of the ventilation passage 32 is provided in the tubular portion 31, and a shaft 34 is provided on the fixed closing body 35. A configuration in which a blocking plate 33 having a shape corresponding to the remaining cross-sectional shape of the ventilation passage 32, which is partially blocked by the fixed blocking body 35, is pivotally attached to 34 is also proposed. Therefore, there is a problem that the ventilation performance of the ventilation path 32 is deteriorated.

The present invention has been accomplished in view of the above circumstances, and provides an indoor air supply port excellent in practical use that does not cause problems such as malfunctions, need for maintenance, and deterioration of ventilation performance. It is provided.

[0010]

The gist of the present invention will be described with reference to the accompanying drawings.

A base cylinder 2 which is an indoor air supply port attached to the ceiling of the room and is connected to a duct 1 communicating with the outside of the room.
And a supply gas 4 having a supply opening 3 which is continuously provided on the front end side of the base cylinder 2 and communicates with the room. The supply gas 4 is provided with a space 5 which communicates with the base cylinder 2. A communication portion 6 that communicates with the air supply opening 3 is provided around 5, and a gas supply valve plate 7 that closes the communication portion 6 is provided in the communication portion 6, and the air supply valve plate 7 is It is configured to swing outward to open the communication portion 6 when the pressure in the room becomes negative, and further,
The supply gas 4 is composed of an upper member 8 and a lower member 9,
The base tube 2 is connected to the member 8 and is provided on the inner surface of the upper member 8.
The air supply valve plate 7 is vertically installed, and the lower member 9 is provided with the air supply opening.
3 is provided, and the air supply valve plate 7 hangs down in the vertical direction.
The lower part of the air supply valve body 7 abuts against the inner surface of the lower member 9,
In other words, the present invention relates to an indoor air supply port, which is configured so as to close and close the space 5 .

The indoor air supply port according to claim 1, wherein the air supply valve plate 7 is a synthetic resin air supply valve plate 7 and is related to the indoor air supply port. Is.

Further, in the indoor air supply port according to any one of claims 1 and 2, the air supply valve plate 7 is vertically oscillated, and is slidable outward from the vertical line and inward from the vertical line. One is related to the indoor air supply port, which is characterized in that it cannot be swung.

Further, in the indoor air supply port according to any one of claims 1 to 3, one air supply valve plate 7 is provided at each of four positions in the front-rear, left-right direction of the space 5, and the air supply opening portion is provided. Reference numeral 3 also relates to the indoor air supply port, which is provided at four positions in the front-back and left-right directions of the space 5, respectively.

Further, in the indoor air supply port according to any one of claims 1 to 4 , a bulging portion 10 bulging upward toward the center is formed in the vicinity of the center of the space 5 as the inner surface of the lower member 9. The present invention relates to an indoor air supply port characterized by being provided.

Further, in the indoor air supply port according to any one of claims 1 to 5, shaft portions 11 are provided on the upper and left sides of the air supply valve plate 7, and the shaft portions 11 are inserted. A shaft hole 12 is provided on the inner surface of the upper member 8, and a swinging preventing portion 13 for blocking swinging inward from the perpendicular of the air supply valve plate 7 is provided near the shaft hole 12. This relates to the indoor air supply port.

The indoor air supply port according to any one of claims 1 to 6, wherein the upper member 8 and the lower member 9 are detachably provided. It is related to.

[0018]

When the air pressure outside the room, that is, inside the duct 1 and inside the room, is the same, the air supply valve plate 7 hangs down in the vertical direction and closes the communication portion 6 to communicate with the base cylinder 2. Space 5
And the air supply opening 3 is prevented from communicating with each other. That is, the air supply valve plate 7
Due to the hanging down in the vertical direction, the air is not supplied into the room from the air supply opening 3.

When the pressure in the room becomes negative compared to that in the duct 1,
Due to the pressure difference between the inside of the duct 1 and the inside of the room, the air supply valve plate 7 is slid outward so that the communication portion 6 is opened. That is, the air supply valve plate 7 automatically slides outward due to the negative pressure in the room, so that the space through which the duct 1 communicates with the base cylinder 2, the communication portion 6, and the air supply opening 3 are passed through the room. Will be in the state of being supplied to.

When the air pressure inside the duct 1 becomes equal to the air pressure inside the room due to the air supply to the room, the air supply valve plate 7 which has been slid outwardly during the air supply to the room is slid inward. It again hangs down in the perpendicular direction and closes the communication part 6 to prevent communication between the space 5 communicating with the base cylinder 2 and the air supply opening 3. That is, when the air supply valve plate 7 has the same pressure as the indoor pressure and the outdoor pressure, the air supply valve plate 7 automatically swings inward and hangs down in the normal direction, so that the air is not supplied from the air supply opening 3 into the room.

Since the present invention is configured as described above, the air supply valve plate is automatically swung by the pressure difference between the pressure inside the room and the pressure outside the room, so that the air can be appropriately supplied into the room through the air supply opening. It becomes an indoor air supply port with excellent practicality.

Further, since the operation of the air supply valve plate does not involve any mechanical drive, there is no problem of malfunction or deterioration due to secular change, and maintenance free.

Further, since the ventilation passages of the duct and the base cylinder are not blocked at all, the ventilation performance of the duct can be exhibited 100%.

Therefore, according to the present invention, the indoor air supply port is excellent in practicability without any problems such as occurrence of malfunction, necessity of maintenance, and deterioration of ventilation performance.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 3 to 5 show one embodiment of the present invention, which will be described below.

In this embodiment, an indoor air supply port attached to the ceiling of the room, which is connected to a duct 1 communicating with the outside of the room, and a base tube 2 which is connected to the front end side of the base tube 2. And a gas supply 4 having a gas supply opening 3 communicating with the room,
A space 5 that communicates with the base cylinder 2 is provided for the supply gas 4, and a communication portion 6 that communicates with the air supply opening 3 is provided around the space 5, and the communication portion 6 is provided with the communication portion 6. An air supply valve plate 7 that closes is provided, and the air supply valve plate 7 is configured to swing outward to open the communication portion 6 when the pressure in the chamber becomes negative.

The supply gas 4 is composed of an upper member 8 and a lower member 9, a base cylinder 2 is connected to the upper member 8, and an air supply valve plate 7 is vertically installed on the inner surface of the upper member 8. Air supply opening 3 on member 9
Is provided, the lower portion of the air supply valve body 7 abuts the inner surface of the lower member 9 to close the space 5 when the air supply valve plate 7 hangs down in the vertical direction. The lower portion of the air supply valve body 7 that is hung in the vertical direction may be close to the inner surface of the lower member 9 to substantially close the space 5.

The upper member 8 and the lower member 9 are detachably provided.

Further, the upper member 8 and the lower member 9 are each formed as an integral member made of synthetic resin. The base tube 2 is formed integrally with the upper member 8.

As the air supply valve plate 7, the air supply valve plate 7 made of synthetic resin is adopted. Therefore, the air supply valve plate 7 is light and can be slidable due to the pressure difference between the outside and the inside of the room. The air supply valve plate 7
Any material may be used as long as the air supply valve plate 7 can be slidable due to the pressure difference between the outside and the inside of the room.

Further, the air supply valve plate 7 is oscillatably provided on the inner surface of the upper member 8 so as to be slidable outward from the vertical line and immovable inward from the vertical line. Explaining this point in detail, a horizontally long rectangular air supply valve plate 7 is adopted as the air supply valve plate 7.

A shaft portion 11 extending in the horizontal direction is provided on each of the upper and left sides of the upper portion of the air valve plate 7, and a shaft hole 12 into which the shaft portion 11 is inserted.
Is provided on the inner surface of the upper member 8, and in the vicinity of the shaft hole 12, there is provided a swaying prevention portion 13 that abuts on the air supply valve plate 7 and prevents oscillating inward from the perpendicular of the air supply valve plate 7. ing.

Further, four air supply valve plates 7 are provided in each of the front, rear, left, and right directions of the space 5, a total of four, and air supply openings 3 are also provided in the front, rear, left, and right directions of the space 5, respectively. There is. Therefore, since the room is generally a quadrangle in a plan view, according to the configuration of this embodiment, it is possible to satisfactorily supply air to the four sides of the room from the air supply openings 3 on the ceiling.

A bulging portion 10 bulging upward toward the center is provided near the center of the space 5 on the inner surface of the lower member 9. In addition, the bulging portion 10 has a pyramid-shaped bulging portion.
No. 10 is adopted, and the lower portions of the air supply valve plates 7 at the above-mentioned four positions are respectively brought into contact with the vicinity of the four sides corresponding to the bottom side. Therefore, it is expected that the air flowing from the base cylinder 2 into the space 5 moves along the side surface of the pyramid-shaped bulging portion 10 for rectifying effect. Also, this pyramid-shaped bulge
Due to the presence of 10, it is possible to prevent the deformation due to a sink mark when the lower member 9 is formed by the resin integral molding method.

In addition, a convex strip 18 is provided in an enclosed state on four sides corresponding to the bottom of the pyramidal bulge 10.
The lower edge of the air supply valve plate 7 that hangs down in the vertical direction is configured to come into contact with the ridge 18.

The air supply opening 3 is a gas supply opening 3 having a gallery structure in which a plurality of slits are arranged in parallel so that insects or the like are less likely to enter the gas supply 4 and cause a malfunction. ing.

In the figure, reference numeral 14 is provided in the upper member 8, and the fitting portions 14 and 16 fitted in the fitting holes 15 provided in the ceiling of the room to attach the upper member 8 to the ceiling are the lower members 9. The upper body 8 and the lower member 9 are normally connected to each other, and when the lower member 9 is removed from the upper member 8, the locking bodies 16 and 17 are horizontally rotated to release the connection. 8, the insertion portions 17, 20 and 21 into which the locking body 16 is inserted are upper members 8
An upper fitting portion 20 and a lower fitting portion 21 for elastically fitting the lower member 9 and the lower member 9 together.

Since the present embodiment is constructed as described above, when the pressure inside the room becomes lower than the pressure outside the room and becomes a negative pressure, the air supply valve plate 7 automatically slides outward to communicate with the communicating portion. Open 6,
The indoor air supply port is excellent in practicality and can supply air to the room through the air supply opening 3.

Further, since the operation of the air supply valve plate 7 does not involve any mechanical drive, there is no problem of malfunction or deterioration due to secular change, and maintenance free.

Further, since the ventilation passages of the duct 1 and the base cylinder 2 are not blocked at all, unlike the conventional indoor air supply port, the ventilation performance of the duct 1 can be 100% exhibited.

Further, since the air supply valve plate 7 cannot be slid inward from the vertical line, when the room pressure becomes high due to heating,
The air supply valve plate 7 does not swing inward to open the communication portion 6, and therefore warm air in the room is prevented from flowing out from the air supply opening portion 3, which is excellent in practicality. It becomes an air supply port.

Further, since the upper member 8 and the lower member 9 are detachable, it is possible to easily clean the inside of the gas supply 4 by removing the lower member 9 and which is excellent in practicality. It becomes a brute.

[Brief description of drawings]

FIG. 1 is an explanatory vertical sectional view of a conventional example.

FIG. 2 is an explanatory sectional side view of a conventional example.

FIG. 3 is an explanatory exploded perspective view of the present embodiment.

FIG. 4 is an explanatory side sectional view of the present embodiment.

FIG. 5 is an explanatory partial side sectional view of an essential part of this embodiment.

[Explanation of symbols]

1 duct 2 base tubes 3 Air supply opening 4 Gas supply 5 spaces 6 communication section 7 Air supply valve plate 8 Upper member 9 Lower member 10 bulge 11 Shaft 12 shaft hole 13 Swing blocking part

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Claims (7)

(57) [Claims] 1. A base cylinder, which is an indoor air supply port attached to a ceiling in a room and is connected to a duct communicating with the outside,
And a supply gas having an air supply opening communicating with the interior of the base cylinder, the supply gas having a space communicating with the base cylinder, and the air supply opening around the space. There is provided a communication part communicating with the communication part, and the communication part is provided with an air supply valve plate that closes the communication part, and the air supply valve plate is slid outward when the pressure in the chamber becomes negative. It is configured to open the communication part , and further, the supply gas is supplied from an upper member and a lower member.
The base member 2 is continuously connected to the upper member.
The air supply valve plate is vertically installed on the inner surface of the
A mouth is provided, and the air supply valve plate is hung vertically.
The lower part of the air supply valve body contacts the inner surface of the lower member or
An indoor air supply port, characterized in that it is configured so as to close the space closely . 2. The indoor air supply opening according to claim 1,
An indoor air supply port characterized in that a synthetic resin air supply valve plate is used as the air supply valve plate. 3. The indoor air supply port according to claim 1, wherein the air supply valve plate is vertically oscillated, and is slidable outward from the vertical line and inward from the vertical line. The indoor air supply port is characterized in that it is configured so that it cannot be swung. 4. The indoor air supply port according to any one of claims 1 to 3, wherein one air supply valve plate is provided at each of four positions in the front, rear, left, and right directions of the space, and the air supply opening is also provided in the space. An indoor air supply port, which is provided at four locations in the front, rear, left, and right directions, respectively. 5. The indoor air supply port according to any one of claims 1 to 4 , wherein an inner surface of the lower member is provided with a bulging portion bulging upward toward the center near the center of the space. Indoor air supply port characterized by being 6. The indoor air supply port according to any one of claims 1 to 5, wherein a shaft portion is provided on each of upper and left upper portions of the air supply valve plate, and a shaft hole into which the shaft portion is inserted is formed. An indoor air supply port, which is provided on the inner surface of the upper member, and is provided with a oscillating block portion for oscillating inward from a perpendicular of the air valve plate near the axial hole. 7. The indoor air inlet according to any one of claims 1 to 6, the upper member and the room air inlet, characterized in that is detachably provided to the lower member.