JP2000193299A - Fan filter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan filter unit the filter of which can be easily attached and detached. SOLUTION: A fan filter unit is provided with a square casing 3 having an opened top and an opened bottom, a horizontal plate-like filter 4 arranged in the casing 3, and a fan device 5 position above the filter 4 in the casing 3. An opening 3a for carrying in/out the filter 4 is formed through the side wall of the casing 3 to which the filter 4 is attached in a state where the filter 4 is held between inwardly protruded filter supporting sections 6 and 7 formed on the lower section of the side wall of the casing 3 and the fan device 5 and the filter 4 is carried in and out of the casing 3 through the opening 3a in a state where the fan device 5 is raised. Preferably, a means which raises the fan device 5 is installed to the casing 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan filter unit for blowing clean air. More specifically, the present invention relates to a fan filter unit that is disposed above a food filling line or the like and that blows clean air to the line to partially form a highly clean place.

[0002] In the present specification, the term rope-shaped is not limited to a simple rope-shaped. All long linear shapes such as cables, belts, and endless chains are included.

[0003]

2. Description of the Related Art Usually, a fan filter unit provided above a food filling line or the like is provided with a rectangular casing having an opening at the top and bottom, a horizontal plate-shaped filter disposed in the casing, and a filter disposed in the casing above the filter. Fan device. In this type of filter unit, the filter is fixedly attached to the casing by being sandwiched between an inwardly protruding filter support formed at a lower portion of the side wall of the casing and the fan device. Then, for example, when replacing the filter, take out the fan device from the upper opening of the casing, then take out the filter from the upper opening of the casing, put a new filter into the casing from the upper opening of the casing, and further remove the filter from the casing. The fan device was placed in the casing from the upper opening.

[0004]

In the conventional fan filter unit, when removing the filter or attaching the filter to the casing, for example, when replacing the filter, the fan device is taken out of the casing and then the upper opening of the casing is opened. It is necessary to take the filter out of the casing or put it in the casing, and there is a problem that it takes time to attach and remove the filter.

[0005] An object of the present invention is to provide a fan filter unit which solves the above-mentioned problem and allows easy attachment and detachment of a filter.

[0006]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, a fan filter unit of the present invention comprises a rectangular casing having an opening at the top and bottom, a horizontal plate-like filter disposed in the casing, and a casing. A fan device disposed above the filter in the fan filter unit, wherein the filter is attached to the casing by being sandwiched between an inwardly protruding filter support formed at a lower portion of a side wall of the casing and the fan device. A filter opening / closing opening is formed on the side wall of the filter device, and the filter is inserted into and taken out of the filter opening / closing opening when the fan device is lifted.

In this fan filter unit,
For example, the fan device is lifted by a lifting device such as a crane, and in a state where the fan device is separated from the upper surface of the filter, a filter in the casing is taken out or a filter is put in the casing from a filter access opening formed in a side wall of the casing. be able to. That is,
Since the filter can be replaced without taking the fan device out of the casing, the time and effort required for replacing the filter can be reduced. For example, if this fan filter unit is used in a local cleaning device or the like, the time required for replacing the filter is reduced, and the labor required for replacing the filter can be significantly reduced.

It is preferable that the fan filter unit is directly provided with lifting means for lifting the fan device.

In this case, there is no need to separately prepare a crane or the like for lifting the fan device.

[0010] Further, in the fan filter unit, the lifting means includes a hoisting shaft rotatably mounted around a horizontal axis above the fan device in the casing;
An operating shaft rotatably provided around a horizontal axis perpendicular to the hoisting shaft, a rope-shaped hoisting member having an upper end fixed to the hoisting shaft and a lower end fixed to the fan device, and any of a hoisting shaft and the operating shaft A worm gear fixed to one of them, and a worm wheel fixed to the other and meshing with the worm gear. By rotating the operation shaft, the winding shaft rotates and the rope-shaped winding member is wound around the winding shaft. In some cases, the fan device may be lifted.

In this fan filter unit,
The lifting means can be configured simply and inexpensively.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a fan filter unit according to the present invention will be described below with reference to FIGS. In the following description, front, rear, left, and right refer to FIG. 1 as a reference, the left in FIG. 1 as a front, the right as a rear, the front side of the paper as right, and the back of the paper as left. In FIG. 4, the left is left and the right is right.

As shown in FIG. 1, the fan filter unit (1) is provided above a conveyor (2) which forms a line for filling processing of foods and the like, and is cleaned by the conveyor (2). The air is blown to partially form a place with high cleanliness. As shown in FIG. 1, a plurality of fan filter units (1) are usually arranged in the conveying direction of the conveyor (2).

The fan filter unit (1) comprises a rectangular casing (3) having an open top and bottom, a horizontal thick plate filter (4) disposed in the casing (3), and a filter (4) in the casing (3). ), And a fan device (5) arranged above. The filter (4) is a conventionally known filter, and a detailed description thereof will be omitted.

An opening (3a) for opening and closing a filter is formed in the lower portion of the left side wall of the casing (3). An L-shaped member (6) is provided at the lower edge of the opening (3a) on the inner surface of the left wall of the casing (3), and an L-shaped member of the left wall on the inner surface of the right wall.
(6) The L-shaped member is located at a position corresponding to the position where
(7) is fixed, and the left and right ends of the filter (4) are placed on the horizontal portions of both members (6) and (7). That is, the horizontal portions of the two L-shaped members (6) and (7) serve as inwardly protruding filter support portions. Right L-shaped member
The horizontal part of (7) is provided with an upper protruding part (7a).
When the filter (4) is inserted, the filter (4) hits the projection (7a) and stops, and the filter (4) is positioned. The lower opening edge of the casing (3) is folded upward, and a plate-shaped punching member (8) is attached to this portion.

At the front and rear of the left and right edges of the upper opening in the casing (3), lower opening groove-shaped members (9) are fixed, respectively. The front left and right grooved members (9) correspond to the corresponding positions, and similarly, the rear left and right grooved members (9) also correspond to the corresponding positions, the front left and right grooved members (9) and the rear left and right grooved members. (9)
A vertical plate-like member (10) having a triangular shape and extending upwards is fixed. A hoisting shaft (11) extending in the front-rear direction is supported by both plate-like members (10) so as to be rotatable around a horizontal axis. A worm wheel (12) is fixed to the rear end of the hoisting shaft (11) projecting rearward from the rear plate member (10).

A bracket (13) is fixed to the rear surface of the rear vertical plate member (10), and the right end of an operation shaft (14) extending in the left-right direction is rotatably supported by the bracket (13). .
A worm gear (15) is fixed to the right end of the operating shaft (14),
The worm gear (15) and the worm wheel (12) are engaged with each other.
(11) rotates.

The fan device (5) has a rectangular housing (16).
And a fan body (17) housed in the housing (16). The fan body (17) is connected to a suitable control device and a drive source (not shown).

A lower opening U-shaped member (18) having a triangular upper protruding plate at the front and rear portions of the upper surface of the housing (16).
Has been fixed. Then, the lower end of the rope-shaped hoisting member (20) is fixed to the upwardly projecting plate-shaped portion of the U-shaped member (18), and the upper end of the member (20) is fixed to the hoisting shaft (11). I have.

In the fan filter unit configured as described above, the filter (4) can be replaced as follows.

First, the operating shaft (14) is rotated so that the hoisting shaft (11) rotates in the direction of winding the hoisting member (20). When the hoisting member (20) is wound on the hoisting shaft (11), the fan device
(5) is lifted off the top of the filter (4).

In this state, the casing is opened from the opening (3a).
Extract the filter (4) from (3) and replace it with a new filter (4).
Can be put into the casing (3) through the opening (3a). After the new filter (4) has been placed in the casing (3), the operating shaft (14) is rotated in the opposite way to the previous case to unwind the hoisting member (20) from the hoisting shaft (11). Filter fin device (5) (4)
The filter (4) is placed on the filter (4) between the L-shaped members (6) and (7) and the fin device (5), and the filter (4) is placed in the casing (3).
Fixedly attached to

When the filter (4) is taken in and out, the punching plate (8) is tilted and removed from the casing (3) as shown in FIG. 4 (b), and the filter (4) is inserted through the lower opening of the casing (3). (4) should be supported.

[Brief description of the drawings]

FIG. 1 is a side view of a transport line using a filter unit according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of the filter unit.

FIG. 3 is a schematic perspective view of the filter unit.

FIG. 4A is a cross-sectional view of a state where a fan device is attached to the filter unit.
(B) is a cross-sectional view during removal of the fan device.

[Explanation of symbols]

(1) Fan filter unit (3) Casing (3a) Filter access opening (4) Flat plate filter (5) Fan device (6) (7) Inwardly protruding filter support (horizontal part of L-shaped member) (11) Hoisting shaft (12) Worm wheel (14) Operating shaft (15) Worm gear

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Fumito Kubo Inventor 6-4, Mita-cho, Shijonawate-shi, Osaka Sankyo Air Conditioning Co., Ltd. F-term (reference) 3L058 BE02 BG03 3L080 BA02 BB01 BE09 4D058 JA12 KC83 QA01 QA21 SA20

Claims (3)

[Claims] 1. A rectangular casing having an open top and bottom, a horizontal plate-shaped filter disposed in the casing, and a fan device disposed above the filter in the casing, wherein the filter is formed at a lower portion of a side wall of the casing. In the fan filter unit which is attached to the casing by being sandwiched between the inwardly protruding filter support portion and the fan device, a filter entrance / exit opening is formed in a side wall of the casing. A fan filter unit characterized in that the fan filter unit is adapted to be taken in and out through an access opening. 2. The fan filter unit according to claim 1, further comprising lifting means for lifting the fan device. 3. A hoisting shaft rotatably mounted around a horizontal axis above the fan device in the casing, and an operating shaft rotatably provided around a horizontal axis orthogonal to the hoisting shaft. A worm wheel fixed at one end to a hoisting shaft, a rope-shaped hoisting member fixed at a lower end to a fan device, a worm gear fixed to one of the hoisting shaft and the operating shaft, and a worm gear fixed to the other. 3. The fan device is lifted by rotating the hoisting shaft by rotating the operating shaft to take up the rope-shaped hoisting member on the hoisting shaft. The described fan filter unit.