JPS61114039A - Manufacture of cooking range ventilating fan - Google Patents

Abstract

PURPOSE:To simplify the forming of an opening part and holding piece, as well as to decrease the number of parts by a method wherein an opening part connecting a ventilating fan main body is arranged to be opened with forming a holding piece used for fixing the ventilating fan main body. CONSTITUTION:The inside of a hood 1 of a ventilating fan main body 2 is divided into an air reservoir chamber S1 to which a discharging port 8 is faced and an air chamber S2 located at an air inlet port 9 is by a partition plate 10. Holding pieces 12, 13 are formed opposite to each other on the partition plate 10, the holding pieces 12, 13 hold a casing 23 formed by bending an elastic body in spiral manner to round the periphery of a blade 21. An opening 11 is formed by the holding pieces 12, 13, and connected with the discharging port and the air reservoir chamber S1. That is, the opening part 11 connecting the ventilating fan main body 2 is arranged to be opened by forming the holding pieces 12, 13 used for fixing the ventilating main body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a method of manufacturing a range ventilation fan in which a ventilation fan main body, which is the main body of ventilation, is incorporated into a hood that covers the upper part of the range.

[Prior Art] Conventionally, as shown in FIG. 1, for example, the above-mentioned type of ventilation fan has a hood (103) equipped with an exhaust port (101) and an air intake port (102) at the bottom, which is partitioned inside. A ventilation fan main body (106) is provided with a plate (104), the inside of the hood is divided vertically by the partition plate (104), and a fan motor (105) is built into a spiral outer shell. ) is installed in the hood, and the outlet of the ventilation fan body (1θ6) is made to face the exhaust port (101) through a communication hole (107) made in the partition plate (104).

[Problems to be solved by the invention] In the conventional ventilation fan described above, the hood (with a complete structure)
The hood (103) and the ventilation fan main body (106) are structurally connected, forming a kind of connection. Because it is not a complete body, the number of parts and materials are large, the cost is relatively high, and the manufacturing itself is quite troublesome.

The present invention provides a range ventilation fan aimed at solving the above-mentioned conventional problems.

[Means for Solving the Problems] A method of manufacturing a range ventilation fan according to the present invention is such that the inside of the hood of a hood having an exhaust port and an intake port is divided into an air chamber facing the exhaust port and an air chamber on the intake port side. A partition plate is provided to divide the area, and the partition plate is provided with holding pieces that hold two opposing free ends of an elastic plate spirally arranged in the outer shell of the ventilation fan body provided in the air chamber of the hood. At the same time, the part in which the holding piece of the partition plate is formed is opened, and the discharge port of the ventilation fan main body is communicated with the air reservoir chamber through this opening.

[Function] In the present invention, the opening that connects the ventilation fan main bodies opens together with the formation of the holding piece used for assembling the ventilation fan main body,
It does not take much time to form the opening and the holding piece, and the number of parts is also reduced.

[Embodiments of the Invention] Next, the configuration of the present invention will be specifically described based on embodiments shown in the drawings.

The range ventilation fan obtained by applying the manufacturing method of the present invention shown in the figures from FIG. It should be defined as the whole connected to the ventilation fan main body (2), which is the main body of the ventilation fan, and is characterized in that it is not just a combination of complete structures. Hood (1
) is usually a hood base (6) consisting of a back part (3) that comes into contact with the wall of a fixed support such as a wall structure (W), a top plate part (4), and left and right side parts (5) excluding the front part. ) and a front plate (7) which is screwed to the front surface of the hood base (6) and constitutes the front surface of the hood (l). The left and right sides (5) and the back (3) of the hood (1) each have one exhaust port (
8) are formed, and any one of the exhaust ports (8) can be selected to serve for exhaust. Na
, 1°, In the illustrated example, the back part (3) is the standard case.
is the mounting surface for the wall structure (W), and this rear part (3)
The exhaust port (8) is shown in a state where it is used for exhausting air. The exhaust port (8) of the hood (1) is selective as described above, but the intake port (9), which is the open end at the lower end of the hood (1), is always opened above the range in a non-selective manner. ,
It functions to introduce air into the hood (1) for ventilation. Inside the hood (1) is the top plate part (4) of the hood (1).
) and an air chamber (St) facing the exhaust port (8) and an air chamber that directly communicates with the intake port (9) by a partition plate (10) interposed between the lower part of the exhaust port (8) and the rear part (3). (
SL). The partition plate (10) is provided diagonally rearward on the front side, and extends almost horizontally to the back surface (3) on the rear side. Particularly on the front side, this part is removably constructed separately and connected with screws. A square hole (11) is formed in the rear horizontal part of the partition plate (10), and the exhaust flow from the ventilation fan body (2) is blown out into the air reservoir chamber (Sl) through this square hole (11). .This square hole (11) is connected to the partition plate (
10) by cutting and bending the relevant part as shown in FIG.
, (13) and a portion of a mounting frame (15) for mounting a backflow prevention shutter (14). That is, the pair of holding pieces (12>, (13) have square holes (lj
) is cut left and right towards the air chamber (Sl) side, and for a part of the mounting frame (15), the part where the square hole (11) is opened is cut back and forth towards the air chamber (Sl) side. The rectangular hole (11) itself is also formed by bending and forming. The pair of holding pieces (12) and (13) are not homologous.

One of them has a hooked portion (16) formed by cutting and bending at the free end. In addition, the mounting frame (15) has a square hole (
The shutter (11) has a rectangular frame structure consisting of left and right elements (17) of different configurations that are erected along the left and right edges of the shutter (11), and a portion formed from the partition plate (10).
) is pivotally supported between opposing frame elements of this mounting frame (15). The reason why the front side of the partition plate (lO) can be opened is to facilitate inspection of the shutter (14). In contrast to the above-mentioned hood (1), the ventilation fan main body (2) configured inside the hood (
The motor (18) and outer shell (19) are screwed to the rear part (3) on the air chamber (Sl) side of 1). The motor (18) is screwed through a mount (20) so that its rotating shaft extends forward, and a blade (21) is attached to the end of the rotating shaft. The outer shell (19) has a suction bell mouth part (22) on the front side, and has an incomplete rectangular shape with an open surface on the mounting side and a surface on the partition plate (10) side. ) horizontal part air chamber (Sl)
A complete structure is achieved by fixing the motor (18) and blades (21) to the rear surface (3) of the hood (1) so as to surround them with the screws in contact with the side surfaces. That is, the hood (
The back surface (3) of 1) also becomes part of the structure of the outer shell (19). Therefore, the outer shell (19) itself has a hood (1
) The outer shell (19) and the air chamber (Sl) of the hood (1) communicate with each other through the square hole (11). And the outer shell (
Inside 19), an elastic plate is bent into a spiral shape so as to go around the blade (21)! Keikomi (23)
) will be deployed. This casing (23) is
The free ends are respectively arranged on the left and right edges of the square hole (11), and one free end is connected to the holding piece (12) and the outer shell (19).
), and the other free end is inserted into the gap between the holding piece (13) and the other holding piece (13).
6) are held in their mouths to stabilize their shape.

As a result, the hood (1) and the ventilation fan body (2) become a complete unit, which sucks in polluted indoor air from the intake port (9), enters the air chamber (i92), the ventilation fan body (2), and the air storage chamber ( It is possible to form a ventilation flow that reaches the exhaust port (8) through the air outlet (Sl), thereby achieving a ventilation function.

The manufacturing method of the oven ventilation fan according to the above embodiment has the same structure as a part of the hood and a part of the ventilation fan body.

Moreover, the opening formed in the partition plate that partitions the inside of the hood, which faces the discharge side of the ventilation fan body, is formed as a holding piece for holding the elastic plate spirally arranged inside the outer shell of the ventilation fan body. ""! m″r″t*mcr
＞**L(,°1°118") In addition, it is possible to reduce the amount of material used, and this makes it possible to significantly reduce costs. Especially in the material of the opening, By forming the holding piece together with the opening, there is no wasted material and the number of parts can also be reduced.

[Effects of the Invention] As is clear from the above description of the embodiments, the method for manufacturing a microwave oven ventilation fan of the present invention provides a method for manufacturing a range ventilation fan according to the present invention, in which an air reservoir chamber facing the exhaust port and an air intake A partition plate is provided to separate the air chamber from the mouth side, and the partition plate holds two opposing free ends of an elastic plate spirally disposed within the outer shell of the ventilation fan body provided in the air chamber of the hood. The holding pieces are formed to face each other, and the part of the partition plate where the holding pieces are formed is opened, and the outlet of the ventilation fan main body is connected to the air reservoir chamber through this opening, so that the ventilation fan main body is connected. The opening is opened at the same time as the holding piece used for assembling the ventilation fan main body, and it does not take much time to form the opening and the holding piece, and the number of parts is also reduced.

[Brief explanation of drawings]

Figure 1 is a vertical side view of a conventional range ventilation fan.
Fig. 2 is a vertical side view of a range ventilation fan as an application example of the present invention, Fig. 3 is a front view with the front panel removed, and Fig. 4 shows the outer shell of the ventilation fan main body, elastic plates, and partitions. An explanatory diagram showing the mutual relationship of plates. FIG. 5 is a view taken along arrow A in FIG. 4. In the figure,
(1) is the hood, (2) is the ventilation fan body, (8) is the exhaust port, (9) is the intake port, (lO) is the partition plate, (11) is the square hole, (12) and (13) are the holders (14) is the shutter, (15) is the mounting frame, (16) is the clamping part, (18)
is the motor, (19) is the outer shell, (21) is the blade, (23
) is the casing. (Sl) is an air reservoir chamber, and (Sl) is an air chamber. In addition,
The same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] A partition plate is provided to divide the inside of the hood of a hood having an exhaust port and an intake port into an air reservoir chamber facing the exhaust port and an air chamber on the intake port side, and a ventilation fan is installed in the air chamber of the hood on the partition plate. Holding pieces that hold the two opposing free ends of the elastic plate spirally arranged inside the outer shell of the main body are formed in a facing manner, and the holding pieces of the partition plate are opened to open the part that holds the two opposing free ends of the elastic plate spirally arranged inside the outer shell of the ventilation fan main body. A method for manufacturing a range ventilation fan, characterized in that the outlet is connected to an air storage chamber through the opening.