JPS6136111Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a ventilation fan configured to prevent as much as possible oil stains on the blower, which is located outside the filter during exhaust operation, by installing a filter on the indoor side opening of the ventilation duct. A pair of decorative plates are installed to close the front of the filter when the operation is stopped.
This eliminates the unsightliness caused by exposed filters.

Providing a filter in front of the blower in a ventilation fan is effective in preventing passing oily smoke from adhering to the blades or the blower motor, but it has the problem of unsightly appearance.

In view of the above points, the present invention includes a ventilation passage leading to the outside of the room, a filter installed at the indoor opening of the ventilation passage, and a blower disposed in the ventilation passage to be located outside the filter. an operation switch for stopping the blower; a pair of decorative plates that are located on the indoor side of the filter and are rotatably supported in the left and right directions to close the front surface of the filter; and a pair of decorative plates that close the decorative plates. a spring that biases the operating switch; a pull string that is connected to the operating switch and is installed vertically and that operates the operating switch by vertical movement; and converting the downward movement of the pull string into a rotational movement of the decorative board. A link mechanism for holding the decorative board in the open state, a means for holding the decorative board in the open state, and a means for releasing the open state in conjunction with the operation of the drawstring are provided.

The link mechanism is a mechanical coupling means that converts vertical displacement into rotational movement, and is interposed between the drawstring and the decorative board.

The above-mentioned retaining means and releasing means are as follows:
For example, engagement and separation between a claw and a hole, attraction and separation using a magnet, etc. are well known.

In the ventilation fan of the present invention, the filter and the blower are hidden by the decorative board when not in use. In this case, the decorative plate is normally biased in the closed state by the spring. When the drawstring is moved downward, the operation switch is operated to start operation, and at the same time, the link mechanism transmits the downward movement as a rotational movement of the decorative plate, and the decorative plate rotates to open the passage.

This causes the indoor air to pass through the filter and be exhausted to the outside.

During this time, the decorative board is maintained in the open state by the holding means.

Closing and stopping are performed by operating the drawstring. When the operation switch is operated by operating the drawstring and the blower is stopped, the above-mentioned holding release operation is performed and the decorative plate is rotated in the closing direction by the action of the biasing spring.

Embodiments of the present invention shown in the drawings will be described in detail below.

Reference numeral 1 denotes a main body frame, which forms a ventilation passage communicating with the interior and exterior, as is conventionally known, and in which a blower consisting of a fan and a motor is disposed. Reference numeral 2 denotes a filter for removing oil from contaminated air, which is removably attached to the front surface of the main body frame 1, that is, the opening on the indoor side of the ventilation path using suitable attachment means. Reference numerals 3 and 3 designate a pair of decorative plates that are located on the indoor side of the filter 2 and open and close the front surface of the filter 2.
4 is rotatably supported on the main body frame 1,
This rotation opens and closes the front surface of the filter 2.
The decorative plates 3, 3 are always urged in the closing direction by springs (not shown) fitted to the shafts 4, 4. 5 is a vertically movable actuating body 6;
This is a conventionally well-known operation switch that controls the stoppage of the blower, and is equipped with a locking mechanism that locks the blower in the lower position, a contact that opens and closes according to the vertical movement of the actuator 6, and a drawstring 7 that connects to the actuator 6. A drawstring 7 is fixed to the lower front of the frame 1 so as to be located on the outdoor side of the filter 2.
hangs downward through the filter 2 and the notch 1' of the main body frame 1. Reference numeral 8 denotes a linkage mechanism that links the opening and closing operations of the decorative plates 3 and 3 with the stop operation of the operation switch 5, and includes a lever 10 rotatably supported on the center of the upper wall of the main body frame 1 with a shaft 9; A connecting member 1 that connects both ends of a lever 10 and both decorative plates 3, 3 and opens and closes the decorative plates 3, 3 as the lever 10 rotates.
1, 11, a square-shaped lever 12 that is rotatably supported on the upper front surface of the main body frame 1, a connecting member 13 that connects one end of the lever 12 and the actuating body 6, and a connecting member 13 that connects the other end of the lever 12 and the lever. 10 and another connecting member 14 that connects the connecting member 10.

The ventilation fan of the present invention has the above-mentioned configuration, and when the operation is stopped, the front surface of the filter 2 is closed by the decorative plates 3, 3, as shown in the drawing. Therefore,
In this state, the filter 2 with oil and the like attached thereto is not exposed on the indoor side, and the filter 2 does not give an unsightly appearance, so that the beauty of the room can be maintained.

Next, when the pull string 7 is pulled downward and the actuating body 6 is moved downward against the spring, the actuating body 6 is locked and held downward, and the contact of the operation switch 5 is closed.
While exhaust operation is started by the operation of the blower, both decorative plates 3, 3 are rotated left and right as the lever 10 is rotated via the connecting member 13, lever 12, and connecting member 14, and the front surface of the filter 2 is rotated. Open.
In such a state, contaminated air generated indoors by the action of the blower passes through the filter 2 to remove oil, and is then discharged to the outside through the ventilation path.

Therefore, the blower, operation switch 5, etc. located on the outdoor side of the filter 2 have very little oil stains due to contaminated air, and the ventilation fan is cleaned using the filter 2.
It is easy to remove and clean.

Thus, the exhaust operation is stopped by pulling the drawstring 7 again. In other words, if you pull the drawstring 7 once to release the locking of the actuating body 6 and then release your hand,
The actuating body 6 moves upward by the return force of the spring,
Open the contacts of the operation switch 5 to stop the blower, and at the same time rotate the lever 10 to close both decorative plates 3,
3 to the filter 2 closed position.

As described above, according to the present invention, the operation switch and the opening/closing operation of the decorative panel can be performed by operating the drawstring, so the operability is excellent and the user-friendliness is excellent.
Furthermore, by closing the decorative board, the unattractive filter and blower can be hidden, making it possible to provide a ventilation fan with excellent interior design.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of the ventilation fan of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1: Body frame, 2: Filter, 3: Decorative board,
5: Operation switch, 8: Linkage mechanism.

Claims (1)

[Scope of utility model registration request] A ventilation passage leading to the outside of the room, a filter installed at the indoor opening of the ventilation passage, a blower disposed in the ventilation passage to be located outside the filter, and stopping the blower. Driving switch and
A pair of decorative plates supported rotatably in the left and right directions on the indoor side of the filter to close the front surface of the filter, a spring that biases the decorative plates in the closing direction, and a spring connected to the operation switch. a drawstring which operates the operation switch by vertical movement; a link mechanism which converts the downward movement of the drawstring into a rotational movement of the decorative laminate; and a linkage mechanism which maintains the decorative laminate in an open state. A ventilation fan, comprising: a means for releasing the open state by communicating with the operation of the drawstring.