JPH09112986A - Ventilating lift hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a room clean by providing a ventilating lift hood which is liftably supported over a cooking stove placed on a dining table for smoothly venting smoke generated by grilling meat and the like. SOLUTION: A ventilating lift hood comprises a ventilating duct 2 provided on the rear sides of an interior wall 1; a stationary vertical cylinder 3 in communication with the ventilating duct 2; slidable lift cylinder 4 fitted around the stationary vertical cylinder 3; a smoke collection hood 4' provided at the lower end of the slidable lift cylinder 4; a lift-pivot-arm 5 pivotally supported within the stationary vertical cylinder 3 and having a through-hole 6 formed therein; a spindle 7 provided in the slidable lift cylinder 4 and slidably inserted in the through-hole 6; a universal joint 8 bearing the weight of the slidable vertical cylinder 4 and the smoke collection hood 4' by friction resistance generated between the through-hole 6 and the spindle 7 due to inclination of the lift- pivot-arm 5; and a device 9 for lifting and pivoting the lift-pivot-arm 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for manually raising and lowering an elevating and lowering hood for exhaust from a ceiling on a tabletop range.

[0002]

2. Description of the Related Art When a microwave oven is placed on a portable dining table to cook yakiniku, the walls of the room are contaminated by oil particles and smoke. If the exhaust hood is hung right above the dining table, the space in the room will be narrowed, and the exhaust hood must be installed at a low position, and the exhaust hood after the meal becomes an obstacle. Therefore, it is necessary to manually and conveniently raise the exhaust hood manually when it is unnecessary.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooking exhaust elevating hood which can be manually and simply and safely moved up and down in the center of a dining room or other room.

[0004]

In order to achieve the above object, the present invention fits a sliding elevating cylinder to a fixed hanging cylinder which communicates with an exhaust duct provided on the back of an indoor wall, and attaches the sliding elevating cylinder to the lower end of the sliding elevating cylinder. A smoke collection hood is provided, and a vertical hole is formed in the lifting and lowering arm pivotally supported on the inner surface of the fixed hanging cylinder, and the core rod provided in the sliding vertical cylinder is slidably inserted into the through hole. , Forming a universal joint for supporting the weight of the sliding lifting cylinder and the smoke collecting hood by the frictional resistance between the through hole and the core rod due to the inclination of the lifting / lowering arm, and providing the lifting / lowering device for the lifting / lowering arm. Exhaust Elevating Hood The elevating and lowering device is constituted by the exhaust elevating and lowering hood described in the above invention, which is formed by a hanging strip that pulls the elevating and lowering arm in the ascending or descending direction around a pivot.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a microwave oven 1 is placed on a dining table 10.
1 is placed directly below the smoke collecting hood 4 ', the hood 4'is held by the right hand, and the raising / lowering rotating arm 5 is rotated by the raising / lowering rotating device 9 in FIGS. Through hole 6 when moved
The frictional resistance between the hood 4 and the core rod 7 is reduced, and the hood 4'and the sliding elevating / lowering tube 4 can be lowered by its own weight. When the movable arm 5 is tilted, the frictional force between the through hole 6 and the core rod 7 stops the up-and-down sliding of the hood 4'and the up-and-down moving cylinder 4 and holds it at that position.

A small reduction motor is used for the lifting / lowering turning device 9, and the horizontal pivot shaft 5'of the lifting / lowering turning arm 5 is turned forward or backward by the electric motor to adjust the inclination of the turning arm 5. .

Further, as shown in FIGS. 1, 2 and 3, the hanging strip 9 '
The tilt of the up-and-down rotating arm 5 is adjusted by pulling downward.

[0008]

[Example] An exhaust duct 2 is provided on the back side of a ceiling wall 1 (under the ceiling) s inside a room or on the back side of a side wall near the ceiling.
The duct 2 is connected to a ventilation fan (not shown) provided at the tip or the base of the ceiling, and the hanging cylinder 3 (inner cylinder) is provided above the center of the dining table 10 placed on the floor of the room. Sliding lifting cylinder 4 fixed to the side wall and fitted to the outer surface of the hanging cylinder 3.
A truncated cone-shaped smoke collecting hood 4'is provided at the lower end of the (outer cylinder), and the upper end of the hanging cylinder 3 is connected to the base of the duct 2 so as to communicate therewith.

A lifting pivot arm 5 is pivotally supported on the inner surface of the hanging cylinder 4 by a horizontal pivot shaft 5 ', and a vertical through hole 6 is formed in the arm 5. Then, a core rod 7 provided at the center of a horizontal rod 12 installed at a lower portion of the elevating cylinder 4 (outer cylinder) is inserted into the through hole 6, and the rotating arm 5 is attached to the rotating arm 5 with reference to FIGS. When it is tilted downward or upward as shown by the solid line, the through hole 6 and the core rod 7
The core rod 7 does not slide downward due to the frictional resistance thereof, thereby forming the universal joint 8. Then, it is possible to support the weight of the elevating cylinder 4 and the hood 4'and hold it at that level.

The elevating / rotating arm 5 is fixed to a horizontal pivot shaft 5'in the pivot direction, and the horizontal pivot shaft 5'is attached to the hanging cylinder 3 '.
It is connected to an output shaft (not shown) of a forward / reverse deceleration small electric motor provided in the (inner cylinder), and the turning arm 5 can be tilted up and down and turned horizontally by an external switch operation. As a result, the contact frictional resistance between the through hole 6 and the core rod 7 decreases as it moves horizontally, and the lifting cylinder 4 and the hood 4 ′ are
Since it becomes impossible to support its own weight, the hood 4'can be gripped and the own weight can be supported by hand, and the elevating cylinder 4 and the hood 4'can be manually raised or lowered to an appropriate level. 1 to 3 without using the forward / reverse rotation small electric motor for the lifting / lowering rotation device 9.
As shown in FIG. 7, a heat-resistant hanging strip 9 ′ connected to the tip of the rotating arm 5 is hung around the lower part of the hood 4 ′ by bypassing the guide roller 13 or 13 ′ and pulled downward to rotate. By slowly moving the arm 5 horizontally and simultaneously raising and lowering the self-weight of the elevating cylinder 4 (outer cylinder) and the hood 4'to an appropriate position, and stopping the downward pulling and pulling of the heat-resistant hanging strip 9'at that position. The elevating cylinder 4 and the hood 4'can be supported at appropriate positions. The cylinders 3 and 4 may be cylinders, quadrangles, or other polygonal cylinders.

[0011]

As described above, according to the present invention, the sliding elevating cylinder fitted to the fixed hanging cylinder and the smoke collecting hood at the lower end thereof are easily lowered and supported by the universal joint just above the range on the table in the room. Not only can scattered oil particles and flue gas for cooking be collected and released into the atmosphere from the exhaust duct to keep the room clean, but when not cooking, the universal joint can be easily relaxed and the above hood can be manually operated. There is an effect that the table can be raised relatively high and the table can be used widely and comfortably.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an exhaust lifting hood according to the present invention.

FIG. 2 is a vertical sectional view of the smoke collecting hood in a lowered state.

FIG. 3 is a vertical sectional view of another embodiment of the universal joint.

FIG. 4 is a perspective view of FIG. 1;

[Explanation of symbols]

 1 Indoor Wall 2 Exhaust Duct 3 Fixed Hanging Cylinder 4 Sliding Lifting Cylinder 4'Smoke Collection Hood 5 Lifting and Rotating Arm 5'Pivot Shaft 6 Through Hole 7 Core Rod 8 Universal Joint 9 Lifting and Rotating Device 9 'Hanging Strip

Claims (2)

[Claims] 1. A sliding hanging cylinder is fitted to a fixed hanging cylinder communicating with an exhaust duct provided on the back of an interior wall, and a smoke collecting hood is provided at the lower end of the sliding lifting cylinder, and the inside of the fixed hanging cylinder is provided. A through hole is formed in the vertically moving pivoting arm that is pivotally supported, and a core rod provided in the sliding lifting cylinder is slidably inserted into the through hole. The exhaust lifting hood, which forms a universal joint for supporting the weight of the sliding lifting cylinder and the smoke collecting hood by the friction resistance of the above, and is provided with the lifting / lowering turning device of the lifting / lowering turning arm. 2. The elevating / lowering hood for exhaust according to claim 1, wherein the elevating / lowering device is formed by a hanging strip that pulls the elevating / lowering arm in an ascending or descending direction around a pivot.