JPS59105816A - Apparatus for preventing infiltration of foreign matters into machinery - Google Patents

Abstract

PURPOSE:To prevent the infiltration of foreign matters into suction and exhaust opening parts, by a method wherein cylindrical bodies are provided around the suction and the exhaust opening parts in a downwardly protruded state and a plurality of vent orifices are provided to the side wall of each cylindrical body in such a state that the vent orifices near to the side surface of a machinery body are made small and dense while the other vent orifices are made large and coarse. CONSTITUTION:Vent orifices 4 are provided to parts positioned at the side surface 7, 8 of a machinery body so as to be made small and dense in the intervals thereof as compared with the other part B. By this structure, the penetration of foreign matters into the machinery body from the suction orifices 4 positioned at the side surfaces 7, 8 of the machinery body is prevented and the air passing resistance in each vent orifice 4 is made low by providing the vent orifices 4 of the part B which are not positioned at the side surfaces of the machinery body and through which foreign matters hardly infiltrate so as to make the intervals and the diameters thereof large and air permeability into the machinery body is improved. Each vent orifice 4 in the coarse part is provided so as to set the diameter thereof to about 10mm. in order to prevent the infiltration of foreign matters and the size of each vent orifice in the dense part is provided so as to set the size thereof to about 5mm..

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a foreign matter intrusion prevention device provided in an intake or exhaust opening of equipment such as an electromagnetic induction cooking device, an electric heater cooking device, or a hot air heating device. It is related to.

Conventional configuration and its problems In conventional equipment, as shown in Fig. 1, an intake opening 2 is provided on the bottom surface 1 of the equipment bowl, but this opening 2 is located near the side of the equipment body due to the equipment configuration. In some cases, it may be necessary to set up

In order to prevent foreign matter from entering the device body through the opening 2, it is necessary to provide a foreign matter intrusion prevention device.
The interval between the ribs 3 constitutes a ventilation hole 4. This rib 3 is located at the periphery of the opening 20 as shown in FIG.
However, if the distance a between the ribs 3 is widened, the ventilation resistance becomes smaller, but at the same time, it becomes easier for foreign matter to enter. Furthermore, if the interval a between the ribs 3 is narrowed to prevent foreign matter from entering, there is a drawback that the resistance to ventilation into the inside of the device increases, which adversely affects the performance of the device.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a foreign matter intrusion prevention device that prevents foreign matter from entering the device body through the ventilation holes and has good ventilation.

Structure of the Invention In order to achieve the above object, the device for preventing foreign matter from entering the equipment of the present invention includes: □A cylindrical body protrudes downward from the periphery of an intake or exhaust opening provided at an eccentric position on the bottom of the equipment body. A large number of ventilation holes are provided in the side wall of this cylindrical body, and
The ventilation holes near the side of the equipment body are made small and dense, and the other ventilation holes are made large and coarse.It is possible to prevent foreign matter from entering the equipment body through the ventilation holes on the side face of the equipment body, and This has the effect that it is possible to obtain a foreign matter intrusion prevention device with excellent air permeability into the device body.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on FIGS. 3 to 7.

In FIG. 3, 2. is an intake or exhaust opening provided at an eccentric position on the device body wall 1.

A cylindrical body 6 having a large number of J holes 4 is provided around the opening. The ventilation holes 4 are formed smaller in a portion located on the side surface 7.8 of the device body than in other portions B with closer spacing. This prevents foreign matter from entering the device body from the intake holes 4 located on the side surfaces 7 and 8 of the device body, and prevents foreign matter from entering the portion B that is not located on the side surfaces 7 and 8 of the device body.
By providing a large interval and diameter of the ventilation holes 4, the ventilation resistance in the ventilation holes 4 is reduced, and ventilation into the device body is improved. The size of the ventilation hole 4 in the rough part is
It is provided with a diameter of about 10 mm to prevent foreign matter from entering, and the size of the ventilation hole 4 in the dense area is provided with a diameter of about 6 mm. 9
4 is a fan that supplies air into the equipment body through the ventilation holes 4.0 Figure 4 shows another embodiment, in which pillars 10 constituting a cylindrical body are arranged at intervals around the opening 2 of the bottom face 1 of the equipment body. A large number of columnar objects 10 are provided at a distance from each other, and the distance between the columnar objects 10 located on the side surfaces 7 and 8 of the device body is smaller than that of the other portions B.

5 to 7 show still another embodiment, in which a large number of ribs 3 are provided around the opening 2 of the bottom surface 1 of the device body, and ventilation holes 4 are formed between the ribs 3. At the same time, attach the disk 5 to the rib 3 on side A located at 7°8 on the side of the device body.
The spacing is set smaller than the spacing between the other ribs.

The distance between the ribs 3 on the side 7.8 of the device body is approximately 6 mm, and the distance on the other side B is approximately 10 mm.

As described above, according to the device for preventing foreign matter from entering the device body of this embodiment, the opening 2 for intake or exhaust is provided at an eccentric position on the bottom surface 1 of the device body, and the opening 2 is provided at the peripheral edge of the opening.

By providing a net-like body 6 having a large number of ventilation holes 4 on the side wall, and by providing the ventilation holes 4 located on the sides 7 and 8 of the device body smaller and more densely than the ventilation holes 4 located on the other side,
Since it is possible to prevent foreign matter from entering the device body through the ventilation holes 4 provided in the cylindrical body 6 on the side surfaces 7 and 8 of the device body, and to prevent a decrease in air permeability into the device body, it is possible to prevent the use of the device. This has the effect of ensuring safety and fully demonstrating the performance of the equipment.

Effects of the Invention As described above, the present invention provides the following effects.

(1) The size of the ventilation jL provided in the cylindrical body is small and densely provided on the side of the equipment body to prevent foreign matter from entering through the ventilation hole on the side of the equipment body where foreign matter easily enters. I can do it.

(2) The ventilation holes on the side of the device body are small and dense, and the ventilation holes on the other side are large, improving ventilation into the device body and increasing the safety of the device. It is possible to secure and fully demonstrate performance.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional device for preventing foreign matter from entering the device body, Figure 2 is a bottom view of the device shown in Figure 1, and Figure 3 is an embodiment of the present invention for preventing foreign matter from entering the device body. perspective view of the device;
FIG. 4 is a perspective view of a device for preventing foreign matter from entering the device body, which is another embodiment of the present invention, and FIG. 5 is a perspective view of a device for preventing foreign matter from entering the device body, which is still another embodiment of the present invention. , FIG. 6 is a side sectional view of FIG. 6, and FIG. 7 is a bottom view of FIG. 5. 1... Bottom of equipment bowl, 2... Opening, 4
...Vent hole, 6...Cylindrical body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) An intake or exhaust opening provided at an eccentric position on the bottom of the equipment bowl, a cylindrical body protruding from the periphery of this opening, and a large number of holes provided on the side wall of this cylindrical body. A device for preventing foreign matter from entering into a device, comprising a ventilation hole, wherein the ventilation hole has a group of parts located near the side surface of the device body densely arranged and a group of other parts located loosely. (2) The cylindrical body is composed of a large number of lips at intervals, and these gaps are used as ventilation holes, and the gap between the lips is made smaller in the part located near the side of the device body than in other parts. A device for preventing foreign matter from entering an apparatus according to claim 1. (3) A patent in which the cylindrical body is composed of a large number of columnar objects, the intervals between the columnar objects are used as ventilation holes, and the gap between the columnar objects is smaller in the part located near the side of the device body than in other parts. A device for preventing foreign matter from entering an apparatus according to claim 1.