JPS63226561A - Suction grille - Google Patents

Abstract

PURPOSE:To make it unnecessary for a long period to replace a filter and make it sure to open and close the air suction channel and possible to adjust the quantity of sent air by providing a filter and damper with a grille in the inside of a main body and making the damper freely movable with a thumb-screw. CONSTITUTION:When a damper 12 is pushed up by rotating a thumb-screw 10, the ceiling face of the damper 12 comes in close contact with a filter 6 and at the same time closes a duct connecting port 3 tightly, and the air channel which makes the duct connecting port 3 communicate with the open section 8 of a grille 7 is closed. Further, when the damper 12 is slid to the right and left with the thumb-screw 10 with the ceiling face 14 of the damper 12 in close contact with the filter 6, the dusts and dirt attached on the filter 6 make contact with the suction side of the filter 6 by a grille 13 which is provided on the ceiling face 14, and are scraped off and accumulated in the inside of the damper 12. And, if the damper 12 is moved between the duct connecting port 3 and the grille 7 by the rotation of the thumb 10, it is possible to change the effective area of the opening of an air flow channel which connects the duct connecting port 3 and the open port section 8 of the port 7, making it possible to regulate the quantity of the flowed air.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a suction grill used at the indoor terminal of air conditioning equipment such as ventilation or air conditioning equipment.

Conventionally, as shown in FIGS. 6 and 7, in this type of suction grill, a grill 103 having an opening 102 is fixed to a main body 101 provided with a duct connection port 1oO, and the opening 102 is left open. Or the slide shutter 104 to close
In addition to opening and closing the passage or adjusting the air volume,
A filter 105 removes dust from the sucked air.

Problems to be Solved by the Invention In such a conventional configuration, the maximum opening ratio of the grill 103 is less than tso%9, resulting in large ventilation resistance, and therefore, the blower equipment used for this purpose also needs to have a high static pressure. there were. Further, since the opening ratio of the grille 103 is small, the effective usable area of the filter 106 for removing dust from the intake air becomes small, and there is a risk that the filter 106 will become clogged in a short period of time and become unusable. Furthermore, in order to prevent this, it is necessary to frequently clean the filter 105, which requires removing the grill 103 and taking out the filter 103 each time, which is very troublesome.

Furthermore, as shown in FIG.
Air leaks occur through the sliding gap of the slide shutter 104, making it impossible to close the shutter completely, and there is a risk that wind noise may be generated through the gap, and external noise may enter. Ta.

The present invention solves these problems.

To provide a suction grill that has low ventilation resistance, makes it difficult for the filter to become clogged, eliminates the need to remove the filter for a long period of time, allows the suction passage to be opened and closed reliably, and allows AT adjustment. It is something.

Means for Solving the Problem In order to solve this problem, the present invention provides a hollow semi-cylindrical body having a duct connection port in two curved parts and an opening in a flat part, and a filter provided in the main body, and a grill having an opening attached to the opening of the main body, one side of the main body having a grid formed with the same curvature as the inner wall of the main body, and an area larger than the area of the duct connection port. A damper in the form of a closed hollow column is provided, and the damper can be moved up and down and slidably by a knob screw provided in the center of the grill.

With this configuration, when the damper is pulled toward the grill by turning the knob screw, the duct connection port on the main body communicates with the opening in the grill via the filter, allowing ventilation while removing dust from the air. When the damper is pushed up by rotating the knob screw, the damper comes into close contact with the filter, seals the duct connection port, and blocks one ventilation path. In this state, when you slide the damper left and right using the knob screw, the dirt and dust that has adhered to the filter will be scraped off by the damper's lattice.
Accumulates inside the damper. In addition, by rotating the knob screw to move the damper between the duct connection port on the main unit and the grille, the distance between the duct connection port and the damper can be changed, making it possible to improve the ventilation path connecting the duct connection port and the grille opening. This will change the opening area.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 5. In the figure, 1 is a hollow semi-cylindrical body with a duct connection port 3 provided in a curved portion 2 and an opening 5 provided in a flat portion 4.A filter 6 is provided in the duct connection port 3, and a filter 6 is provided in the flat portion 4. is equipped with a grill 7. This grille 7 is provided with an opening 8 that communicates with the duct connection port 3, and is also provided with an elongated hole 9 in the center. A thumb screw 10 is provided which passes through the elongated hole 9 of the grille 7 and is slidably and rotatably held on the grille 7 by a washer 11. Inside the main body 1, there is formed a lattice 13 with the same curvature as the inner wall of the main body 1, and a top surface 14 having an area larger than the area of the duct connection port 3, and a screw hole 15 opposite to the top surface 14.
A damper 12 in the form of a hollow rectangular prism consisting of a lower surface 16 having
The damper 12 is attached to the thumbscrew 10 through the screw hole 16, and can be moved up and down and left and right inside the main body 1 by operating the thumbscrew 10.

In the above configuration, when the damper 12 is pulled toward the end of the grill by rotating the knob screw 1o as shown in FIG. 3 and the opening 8 of the grill 7 communicate with each other, allowing ventilation (the blower is not shown) as shown by arrows A-+A', and making it possible to remove dust from the air with the filter 6. . Further, when the damper 12 is pushed up by rotating the knob screw 10 as shown in FIG. The ventilation path communicating with 8 is blocked.

Further, as shown in FIGS. 4 and 5, when the damper 12 is slid from side to side with the knob screw 10 with the top surface 14 of the damper 12 in close contact with the filters, dirt and dust attached to the filter 6 can be removed. The lattice 13 provided on the top surface 14 contacts the suction side of the filter 6, and is scraped off by this contact and accumulated inside the damper 12. Also, by rotating the knob screw 1o, the damper 12 is connected to the duct connection port 3.
and the grille 7, the distance between the duct connection port 3 and the top surface 14 of the damper 12 becomes variable, and the effective opening area of the ventilation passage that communicates the duct connection port 3 and the opening 8 of the grille 7 becomes variable. Since the air flow rate can be changed, the air volume can be adjusted.

As described above, according to this embodiment, since the inner wall of the main body 1 has a curvature, the resistance of the ventilation path connecting the duct connection port 3 and the opening 8 of the grill 7 is reduced, and the Since the area of the opening 80 can also be increased, ventilation resistance can be further reduced. Furthermore, since the filter 6 is provided over the entire duct connection port 3, the effective usable area is large, the ventilation resistance is small, and clogging is less likely to occur. In addition, the grid 13 provided on the top surface 14 of the Dan-(-12) can scrape off dirt and dust attached to the filter 6, so it can always be used with low ventilation resistance, allowing stable air intake. Damper 1 removes the dirt and dust that has been scraped off.
Since the filter 6 can be stored inside the filter 2, there is no need to remove the filter 6 for a long period of time, and the maintenance effort is greatly reduced.

Also, the area of the top surface 14 of the damper 12 is
Because the area is larger than the area of 12 is on the same center line as the duct connection port 3, noise is insulated by the damper 12 and becomes more difficult to penetrate than the grille 7. Further, by rotating the knob screw 10 and moving the damper 12 between the duct connection port 3 and the grille 7, the air volume can be easily adjusted.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, a filter is provided inside the main body, and a damper having a lattice formed on the negative side with the same curvature as the inside of the main body, and the damper is connected by a knob screw. Because it can be moved up, down, left and right,
It is possible to remove dust from the intake air, and the filter can be cleaned from the outside, making it possible to ensure the airtight opening and closing of the ventilation duct, and to reduce ventilation resistance, thereby insulating external noise. becomes possible. It also has the effect of making it easier to adjust the air volume.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view showing a state in which the ventilation path of the suction grill according to an embodiment of the present invention is opened, FIG. 2 is a front view showing the state in which the ventilation path of the same suction grill is opened, and FIG. Fig. 4 is a side cross-sectional view showing the air passage of the suction grille closed by the dungeons; Fig. 4 is a side cross-sectional view showing the damper of the suction grille moved to the left; Fig. 5 is a side cross-sectional view showing the damper of the suction grille. Side sectional view showing the state moved to the right,
FIG. 6 is a side cross-sectional view showing a conventional suction grill with its ventilation passages open, and FIG. 7 is a side cross-sectional view showing the conventional suction grill with its ventilation passages closed. 1...Main body, 2...Curvature part, 3...
...Duct connection port, 4...Flat part, 5...
...Aperture, 6...Filter, 7...
Grill, 8...Opening, 1o...Knob screw, 12...Damper, 13...
Lattice, 14...Top surface, 16...Screw hole, 16...Bottom surface. Name of agent: Patent attorney Toshio Nakao and one other person i-
One small cow...handmade! 7--Griffle f2--Ichibanha-4th school

Claims (1)

[Claims] A hollow semi-cylindrical main body having a duct connection port in the curved part and an opening in the flat part, a filter provided in the duct connection port, and a grill having an opening attached to the opening of the main body. A hollow pillar-shaped damper is provided in the main body, one surface of which is a lattice formed with the same curvature as the inner wall of the main body, and whose area is larger than the area of the duct connection port. A suction grill that can be raised and lowered and slid freely inside the main body.