JPH047470Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a valve element support structure for smoothly opening and closing the valve element of an air damper used in an air cycle house.

Conventional technology Air cycle housing (registered trademark, hereinafter referred to as the house) is a building that has ventilation walls and ventilation roof foundations made of heat insulating materials inside the outer walls of the building and under the roof. A ventilation layer is formed in the gap between an exterior wall, etc. and a ventilation wall, etc., and solar heat is absorbed through the wall or roof, or natural ventilation is taken in, and the air pressure difference (positive and negative pressure) generated within the ventilation layer is utilized. This refers to a house in which the temperature and humidity of the building are adjusted by controlling the flow and stopping of airflow.

In this house, as shown in FIG. 11, air dampers are installed at the bottom of the ventilation wall or the bottom of the ventilation roof base to control the airflow within the ventilation layer. These dampers have a valve swingably disposed inside a casing (box) to allow air to pass in only one direction. The valve bodies of these dampers have conventionally been made of thin and lightweight materials such as plastic film, and therefore the upper support structure does not require special consideration. There was no problem with the opening/closing operation.

Problems that the invention aims to solve However, in order to better retain heat absorbed from the outside world and control heat retention, the valve body of the damper is also required to have insulation properties, and the valve body is made of heat insulating material such as expanded styrene. When the valve body is formed, the weight of the valve body itself increases and noise is generated when the valve is opened and closed. As a result, there is a need for a support structure that can support the valve body and perform smooth opening and closing operations.
Moreover, the valve body needs to be opened and closed by a slight negative pressure or positive pressure generated by the airflow flowing within the ventilation layer. That is, during the daytime in summer or winter, the valve opens due to the negative pressure generated by the rising air current generated within the ventilation layer due to heat absorption from the outside world, allowing air to pass through (see Figures 11 and 9). At night in winter, the valve is closed by the positive pressure generated by the downward airflow generated within the ventilation layer due to heat radiation to the outside world, forming an air insulation layer.

Furthermore, the damper is used by being inserted into a mounting opening provided in a ventilation wall or a ventilation roof base (see Fig. 9 for an example in which the damper is installed in a mounting opening in a ventilation wall). During this insertion,
When installed on a ventilation wall, the damper may be fixed at an angle; when installed on a ventilation roof substrate, the damper is always fixed at an angle due to the slope of the roof. be done. In such a case, the shaft portion of the valve body is not held horizontally, which affects the smooth rocking of the valve body.

In response to these demands, the present invention ensures smooth opening and closing operations of a valve body made of a material with some weight, such as expanded styrene, and
It is an object of the present invention to provide a support structure that can similarly ensure smooth opening and closing operations of a valve body even when a damper is installed at an angle.

Means for Solving the Problems In order to achieve the above-mentioned problems, the present invention has a valve inside a box made of a heat insulating material and attached to the ventilation wall or ventilation roof base of an air cycle house. A storage space in which the body is swingably suspended and a valve seat that supports a part of the surface of the valve body are provided, and an air flow that can communicate with the storage space is provided at the lower part of the entire surface of the box body in the direction of the surface of the valve body. An inlet and an air outlet communicating with the storage space are formed at the lower part of the other side of the box body opposite to the one side, and the negative pressure on the outlet side causes the airflow flowing from the inlet to close the valve. An air cycle for residential use that opens the body to communicate between the inlet and outlet, while closing the valve body against the valve seat to prevent airflow from flowing in from the outlet. A support structure for a valve body of an air damper includes: a valve body formed of a heat insulating material and provided with shaft attachment protrusions at predetermined left and right positions on the upper end; a mounting part that can be fitted into the protrusions; and this mounting part. The blade has a wedge-shaped cross section that protrudes outward from a position offset from the center line of the end face of the outer end, and a spherical protrusion is formed at the tip in the length direction of the blade, and the above-mentioned attachment portion is attached to the protrusion of the valve body. When the spherical protrusion is installed through the shaft body, the spherical protrusion is fixed to the shaft body located at approximately the same position as or inside the extension line of the side surface of the valve body, and to the ceiling surface of the valve body storage space of the box body. and a body piece protruding from the lower surface of this body piece, so that when the valve body is closed, it rests in a position tilted toward the air inlet, and when the valve body is fully opened, it can be opened to the required degree. It is characterized in that it is equipped with a blade receiver having an opening degree of be.

Function The valve element is swingably suspended in the storage space inside the box of the air damper used in air cycle houses. At the same time, since this shaft is located at a position slightly offset from the center line of the end face of the outer end of the shaft mounting portion, the weight of the valve body causes the blade to be pushed into the blade receiver. On the other hand, it is inclined from the beginning by an amount corresponding to the deviation, and can effectively receive the airflow based on the slight negative pressure generated within the ventilation layer, compared to the case where it is vertical. As a result, the frictional resistance to the swinging of the valve body is suppressed, and the valve body is opened by a very small amount of negative pressure generated within the ventilation layer. By setting the opening degree of the blade receiver to an appropriate size, the limit of the inclination of the blade and hence the valve body when the valve body is opened to the maximum is defined.

If the air damper is installed at an angle, the axis of the shaft that supports the valve body will also be in a position offset from the horizontal direction. Therefore, the frictional resistance caused by the swinging of the valve body can be minimized.

Embodiments Hereinafter, the present invention will be described in detail based on illustrated embodiments.

1 and 2 show a support structure according to an embodiment of the present invention. In the figures, reference numeral 1 is a valve body made of expanded styrene, which has a recess 1a on its surface and a surrounding area. By providing ribs 1b on the parts, etc., the weight is not too heavy and the strength is maintained. Shaft mounting projections 2, 2 are provided at symmetrical positions on the upper surface of the valve body 1 (see FIG. 3).

Reference numeral 3 denotes a shaft that is attached to the left and right shaft attachment projections 2, respectively, and as shown in FIG. It consists of a mounting part 4 and a shaft part 5 protruding from its outer end. The shaft portion 5 is located at a position offset from the center line l of the end face of the outer end of the mounting portion 4, and in this embodiment, is protruded toward the air outlet 16 side of the box body 11 of the heat insulating air damper 10. (See Figures 4 and 9). In addition, 16 is the ventilation layer 1 of the box body 11.
The air inlet opening toward 2, 18 is the box body 11
The air outlet 16 and the air inlet 17 are both formed to communicate with this accommodation space 18 . Also, reference numeral 19 in the figure
and 20 are valve seats provided at appropriate upper and lower positions on the air inlet side of the storage space 18, and the upper and lower surfaces of the valve body 1 are brought into contact with each other to interrupt communication between the inlet 17 and the outlet 16. The box body 11 is of an assembly type. For example, in the damper shown in FIG. 9, a valve is installed on the inner surface of a main body wall 11a, which has a space in which the valve body 1 is housed, and upper and lower valve seats 19 and 20 have flange parts. body 1
After installing the retrofit wall 1 facing the ventilation layer 12
By fixing 1b, the air inlet 17
, an air outlet 16 , an income space 18 , and a valve seat 1
9 and 20 are assembled.

Further, the shaft portion 5 includes a blade 5 having a wedge-shaped cross section.
1, and a spherical protrusion 52 is formed at the tip in the length direction, and when attached to the protrusion 2 of the valve body 1 via the attachment part 4, the spherical protrusion 52 forms an extension of the side surface of the valve body 1. Located at the same position or further inside.

Reference numeral 6 shown in FIGS. 5 to 7 is a bearing body that receives the shaft portion 5 of the shaft body 3. As shown in FIGS. This bearing body 6
As shown in FIG. 9, there is a strip-shaped main body piece 7 fixed to the ceiling surface of the storage space in the box body 11 of the air damper 10, and a bearing installed vertically at a predetermined position on the lower surface of the main body piece 7. It consists of a piece 8 and a stopper piece 9 which is similarly protruded from the outside of the bearing piece 8 with a predetermined gap therebetween.

The bearing piece 8 is provided at a position corresponding to the shaft body 3 and the shaft portion 5 described above, and includes a blade receiver 81 as shown in FIG. This blade receiver 81 is
Together with the blade 51, it constitutes a knife edge bearing, and defines the limit of the swing of the blade within the range of the opening degree 82.

The stopper piece 9 comes into contact with the tip of the shaft part 5 when the shaft part 5 is received by the bearing piece 8, and restricts the lateral movement of the shaft.

The shaft body 3 is attached to the blade receiver 81 of the left and right bearing pieces 8 of the bearing body 6 configured in this way.
By placing the blade 51 on the shaft body 3 and fitting the shaft attachment protrusion 2 at the upper end of the valve body 1 into the attachment portion 4 of the shaft body 3, the valve body 1 expands the storage space in the box body 11 of the air damper 10 by its width. It is suspended so that it can swing freely so as to completely block the same space in both directions.

In this suspended and stationary state, the valve body 1 is located at a position where the shaft portion 5 is slightly deviated from the center line of the outer end surface of the mounting portion 4, and as described above, in this embodiment, the valve body Since it is provided offset toward the outlet side, it is at a position inclined from the vertical line by an amount corresponding to the offset, as shown in FIG. 10A.
As a result, combined with the action of the knife edge bearing, the valve body is opened by receiving the airflow generated by the pressure difference when only a slight negative pressure is generated in the ventilation layer 12 in the air cycle house. 1st
Figure 0B shows the blade 51 when the valve body 1 opens.
The relationship between the blade receiver 81 and the blade receiver 81 is shown. The opening degree 82 of the blade determines the maximum inclination of the blade 51 and therefore the maximum opening degree of the valve.

In addition, when the air damper 10 equipped with the support structure for the valve body 1 is installed at an angle in the mounting opening 15 of the ventilation wall, a stopper piece that restricts the lateral movement of the shaft portion 5 of the valve body 1 is provided. Since the spherical protrusion 52 at the tip of the shaft portion is in contact with the shaft portion 9, the rotation of the shaft portion 5 is performed smoothly without any trouble, and the opening/closing operation of the valve body 1 is not impaired.

Effects As described above, according to the present invention, the valve body
The valve body is supported by a knife edge bearing composed of a blade and a blade receiver, and this blade is provided protruding at a position offset from the center line of the shaft body that fits and supports the valve body. The structure is designed to have an inclination that allows it to receive airflow effectively. In this way, the present invention suppresses the frictional resistance that hinders the operation of the valve body, and has a structure that can sufficiently receive the pressure of airflow, so it can reduce the slight negative impact that occurs in the ventilation layer of air cycle homes. Even with a small airflow generated by pressure, the valve body can be opened easily in response to the generated pressure difference. By appropriately changing the opening degree of the blade receiver, the limit of the inclination when the valve body is opened to the maximum can be adjusted. It is possible to use an air damper whose blade receiver opening degree corresponds to the flow rate of the airflow.

The valve body support structure of the present invention is an open structure consisting of a blade and a blade receiver, so compared to a structure such as a shaft and a hole, the valve body is more susceptible to dust and moisture passing through the air damper. movement is less likely to deteriorate.

In addition, in the present invention, in order to restrict the lateral movement of the shaft, the longitudinal end of the shaft is formed into a spherical shape, and the contact between this and the stopper piece of the bearing body is made by point contact. I have to. As a result, even if the air damper is installed at an angle,
Frictional resistance due to the contact is suppressed, ensuring smooth rotation of the shaft, and does not affect the opening/closing operation of the valve body housed in the air damper.

In this way, in the present invention, the frictional resistance to the opening and closing operations of the valve body is minimized, so that less noise is generated as the valve body opens and closes.

Furthermore, the support part of the valve body is provided at the top of the valve body so that it does not protrude from both sides of the valve body, so that the valve body can cover the air inlet at the bottom of the air damper to the maximum extent in the width direction. Compared to the overall size of the air damper, it has a structure that allows the most effective use of the pressure of the airflow from the air inlet.

Insulated air dampers, which are used in ventilation walls in air-cycle homes, capture subtle air pressure differences (positive and negative pressures) that occur due to heat absorption from the outside world, heat radiation to the outside world, and natural ventilation. The flow of water must be effectively controlled.
To this end, the supporting structure for the valve body must be such that the valve body can receive the pressure of the air flow most effectively, while at the same time minimizing the frictional resistance to rocking of the valve body. This invention satisfies the above-mentioned requirements for air cycle homes, while also suppressing noise generation, preventing valve functions from being impaired by dust, moisture, etc., and maximizing the opening of the valve. It is adjustable.

[Brief explanation of the drawing]

Fig. 1 is a front view of a valve body to which a support structure according to an embodiment of the present invention is applied, Fig. 2 is a side view thereof, and Fig. 3 is an enlarged perspective view showing the state in which the shaft body and the upper part of the valve body are attached. , FIG. 4 is a sectional view taken along the - line in FIG. 3, FIGS. 5 to 7 are a front view, bottom view, and side view of the bearing body 6, FIG. The figure is a sectional view showing the state of use of the air damper, which has the valve body shown in Figure 1 and is attached to a ventilation wall. Figures 10A and 10B show the shaft in the static state before the valve body operates and in the open operation state. FIG. 11 is an explanatory diagram showing the positional relationship between the blade and the blade receiver of the bearing body, and FIG. 11 is an explanatory diagram showing the flow of air in an air cycle house. 1... Valve body, 2... Shaft mounting projection, 3...
Shaft body, 4... Attachment part, 5... Shaft part, 51... Blade, 52... Spherical tip part, 6... Bearing body,
7...Body piece, 8...Bearing piece, 81...Blade holder, 9...Stopper piece, 10...Air damper, 11...Box body, 11a...Body wall of box body, 1
1b... Retrofitted wall, 12... Ventilation layer, 13... Air damper attached to the ventilation wall, 14... Air damper attached to the ventilation roof base, 16...
Air outlet, 17... Air inlet, 18... Storage space, 19, 20... Valve seat.

Claims (1)

[Scope of claim for utility model registration] A storage space in which a valve body is swingably suspended inside a box formed of a heat insulating material and attached to the ventilation wall or ventilation roof base of an air cycle house; A valve seat that supports a part of the surface of the valve body is provided, and an air inlet that can communicate with the storage space is provided at the lower part of one side of the box body in the direction of the surface of the valve body, and also opposite to the one side of the box body. An air outlet communicating with the storage space is formed at the lower part of the other side, and the valve body is opened by the airflow flowing from the inlet due to the negative pressure on the outlet side, and the inlet and outlet are opened. In the support structure of the valve body of the air cycle residential air damper, which prevents backflow of airflow by closing the valve body against the valve seat against the airflow entering from the outlet, the insulation material is used. a valve body having shaft mounting projections at predetermined left and right positions on the upper end, a mounting portion that can be fitted into the projections, and a position offset from the center line of the end surface of the outer end of the mounting portion. The blade has a wedge-shaped cross section projecting outward from the blade, and a spherical protrusion is formed at the tip of the blade in the longitudinal direction. A shaft body located at approximately the same position as the extension line of the side surface of the valve body or inside thereof, a body piece fixed to the ceiling surface of the valve body storage space of the box body, and a body piece protruding from the bottom surface of this body piece. a blade receiver, which has an opening degree sufficient to allow the valve body to stand still in a position tilted toward the air inlet when the valve body is closed, and to open to the required degree when the valve body is fully opened; and a shaft body. A support structure for a valve body of an air cycle residential air damper, comprising: a bearing body having a stopper piece that abuts the spherical protrusion to restrict lateral movement of the shaft body.