JPH0537145Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air supply port for a building that is attached to the roof of a building such as a chicken house or a pigsty to suck air into the building.

(Conventional technology) Because ventilation is important in poultry houses and pig pens, air supply vents are installed on the roof and air is forcibly supplied from the air supply vents.However, conventional air supply vents for buildings are Since the shutter is attached so that the communication port can be closed by the shutter except when the intake fan is being driven, the air supply fan motor and shutter should not be electrically connected so that they work together. It was unusable.

(Problem to be solved by the invention) The invention aims to solve the above-mentioned drawbacks by making it possible for the communication port to have an opening degree that corresponds to the fluid pressure when air is forcibly supplied from the air supply port. The main point is that it can be opened and closed automatically.

(Means for Solving the Problems) The building air supply fan of the present invention has a long box-shaped casing whose upper surface is formed with a long window hole for intake, and whose lower surface is formed with a long window hole for blowout. The flow path from the long window for blowing out to the long window for blowing out is normally closed due to the weight of the balance weight, and when the required suction fluid pressure is applied to prevent changes in the indoor temperature, the blocked state is released and the flow path is closed. A pair of dampers whose opening degree changes depending on the suction fluid pressure are attached.

(Function) If such a building air supply port is used by attaching it to a mounting hole provided on the roof of the building, the flow path from the intake long window hole to the outlet long window hole is always maintained by the balance weight. Since the room is closed by the damper, the indoor air is cut off from the outside air and the indoor temperature is not affected by the communication with the outside air. The flow path that has been blocked by this is automatically opened to an opening degree that corresponds to this airflow pressure, and a predetermined air supply can be performed.

(Embodiments) Next, the present invention will be described in detail with reference to illustrated embodiments.

Reference numeral 1 denotes a long box-shaped casing in which the upper surface is formed with a long window hole 2 for intake, and the lower surface is formed with a long window hole 3 for blowing out.
A pair of gutter-shaped dampers 4a and 4b are attached. The dampers 4a, 4b are pivotally mounted in the casing 1 with two pivot shafts 6a, 6b made of light metal attached slightly below their upper edges, and a balance weight 5a, 5b is attached so that its position can be adjusted, and the weight of these balance weights 5a, 5b causes the dampers 4a, 4b to always move to the eaves 4c, 4 on the lower edge.
d overlap to completely block the flow path and prevent changes in the indoor temperature. However, when downward fluid pressure is applied from the intake long window hole 2 to the blowout long window hole 3, the blocked state occurs. is released so that the degree of opening of the flow path changes depending on the fluid pressure. A stopper 7 is provided on the lower inner wall of the casing 1 to prevent the dampers 4a and 4b from being pivoted more than necessary.
A, 7b are provided, and when the wind pressure naturally enters from the intake long window hole 2, both dampers 4a, 7b are balanced with the balance weights 5a, 5b.
4b closes the flow path, but when the supply fluid is forcibly entered from the intake long window hole 2 under pressure higher than that, the flow path is opened to an opening degree corresponding to the fluid pressure. Note that reference numeral 8 in the figure is a mounting collar section stretched over the upper edge of the casing 1.

A device configured in this way can be installed in a mounting hole provided on the roof of a building, etc., and the casing 1
The downward flow path from the intake long window hole 2 on the top surface to the blowout long window hole 3 is completely blocked by the dampers 4a and 4b, so this occurs due to communication between the inside of the building and the outside air. It can prevent changes in indoor temperature. Therefore, if outside air or temperature control fluid is forcibly supplied into the building, the dampers 4a and 4b will have an opening degree corresponding to the fluid pressure due to the air supplied from the long intake window 2. By pivoting in this manner, the flow path is unblocked, allowing a predetermined amount of fluid to be supplied into the building.

(Effects of the invention) As is clear from the above description, the present invention is such that the inside of the building is not always communicated with the outside air, so there is no risk of inconvenience in maintaining the indoor temperature. The damper is automatically opened to an opening corresponding to the forced fluid pressure, so the desired air can be supplied, and it is inexpensive because it does not require a complicated control mechanism. Together with the advantages it provides, it has great practical value as it solves the problems of conventional building air intakes.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway front view. 1...Casing, 2...Long window for intake, 3...
...Blowout long window hole, 4a, 4b...Damper, 5
a, 5b...Balance weight.

Claims (1)

[Scope of utility model registration request] A flow path from the intake long window 2 to the outlet long window 3 is provided in a long box-shaped casing 1 whose upper surface is formed with an intake long window 2 and whose lower surface is formed with a blowout long window 3. Normally, the weight of the balance weights 5a and 5b prevents changes in the indoor temperature in a closed state, but when a required fluid pressure is applied, the closed state is released and the opening degree of the flow path changes according to the fluid pressure. An air supply inlet for a building, characterized in that dampers 4a and 4b are attached.