JPH018905Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a range ventilation fan, and more particularly to a duct-connected simple range ventilation fan.

(Prior Art) Conventionally, this type of range ventilation fan has a box-like main body case with a removable front plate on the front part, and a blower (motor and fan) is installed inside the main case. was. Further, an exhaust port is formed on the back side of the main body case, and the exhaust port is connected to an exhaust duct inserted into a wall when the range ventilation fan is installed in a suitable location (kitchen) of a building.

(Problem that the invention aims to solve) However, conventional range ventilation fans are only used to exhaust smoke, etc. generated directly under the ventilation fan (local ventilation); ), another device had to be installed indoors.

Therefore, the purpose of the present invention was to solve these conventional problems, and to provide a range ventilation fan that enables local ventilation and general ventilation as well as natural air supply with a single device. Our goal is to provide the following.

(Means for Solving the Problems) The range ventilation fan of the present invention has a compartment partitioned by a partition plate and communicating with an exhaust duct to support and house a blower, and has an open bottom surface and a wall for ventilation. a blower case having an opening; a suction port formed in the partition plate to suck air in the blower case into the compartment by operation of the blower; and a ventilation hole placed and fixed on the upper part of the blower case and in a wall surface. a general ventilation opening formed in the air supply chamber attachment portion to the upper part of the blower case and communicating with each other; a closing plate removably provided in the general ventilation opening; The air supply chamber includes an opening for connecting an air supply duct formed in the air supply chamber, and a closing plate that is removably attached to the opening.

(Function) According to the range ventilation fan of the present invention, smoke generated when cooking on a gas stove located directly below the range ventilation fan in the kitchen, for example, is sucked in from the bottom of the blower case and sent to the blower. The air is sent to the exhaust chamber through the air outlet, and the air is exhausted outside from the exhaust duct (local ventilation) using the air pressure. At that time, in addition to sucking in air from the entire room and exhausting it through the ventilation opening on the wall of the blower case (general ventilation), the communication opening that connects the blower case and the air supply chamber can be opened by removing the closing plate. In this case, indoor air is sucked in from the general ventilation opening formed on the wall of the air supply chamber, increasing exhaust efficiency (overall ventilation efficiency). In addition, although this local ventilation and general ventilation are just exhaust, when fresh air from outside is taken in (air supply), the communication opening is closed with a closing plate and the air supply chamber is closed. When the closing plate of the air supply duct connection opening is removed and the air supply duct is connected to the opening, fresh air from the outdoors is naturally supplied from the general ventilation opening on the wall surface of the air supply chamber.

(Embodiments) Hereinafter, preferred embodiments of the range ventilation fan of the present invention shown in the accompanying drawings will be described in more detail.

FIGS. 1 and 2 show a range ventilation fan according to an embodiment of the present invention installed at a predetermined location in a room (for example, a kitchen). Fig. 1 is a view of this range ventilation fan from the ceiling 1 side, and Fig. 2 is a view of this range ventilation fan from the front. The range ventilation fan is also installed in a place directly above the gas stove, surrounded by the ceiling 1 at the top and the room walls 2 and hanging cabinets 3 at the sides, as in the conventional one.

As shown in FIGS. 3 and 4, this range ventilation fan includes a substantially box-shaped blower case 5 with an open bottom surface. A blower motor 7 is attached to the inside back of the blower case 5 by means of mounting feet 6, and a fan 8 is attached to the rotating shaft of the motor 7.
is fixed by a nut 9. The blower provided in the blower case 5 is particularly arranged in a compartment partitioned by the partition plate 10 and the inner back surface of the blower case 5. Part of the partition plate 10 passes through the front of the fan 8 and is connected to the top plate of the blower case 5 .
A suction port 11 is formed for sucking the air inside into the compartment. A filter 14 is removably attached to the lower open portion of the blower case 5, that is, the local ventilation opening, to allow oil to adhere when exhausting oil smoke and the like. Furthermore, a ventilation opening for overall ventilation, which will be described later, is formed in the front panel of the blower case 5.

An exhaust chamber 15 with an open bottom surface is mounted and fixed on the upper plate of the compartment in the blower case 5 (a part of the top plate of the blower case 5). The exhaust chamber 15 and the compartment are communicated through an opening 12 formed in the upper plate of the compartment. In addition,
A cylindrical body 13 is provided on the upper plate so as to align with this opening 12, and serves as a guide in the exhaust direction. At the rear of this exhaust chamber 15 is an exhaust port 1.
6 is opened, and a duct connection frame 17 is fixed to the outer wall surface of the exhaust port 16 in alignment with the exhaust port 16. The exhaust duct 4 is fitted and mounted using this duct connection frame 17, and thereby the outside communicates with the inside of the blower case 5 via the exhaust chamber 15 and the compartment.

By the way, an air supply chamber 22 is placed on the top plate of the blower case 5 so as to be located on the front side of the exhaust chamber 15, and is fixed with screws 19. A general ventilation opening 21 is formed in the front wall of this air supply chamber 22. Rectangular openings 20 and 23 that are aligned with each other are formed in the close contact portion between the bottom wall of the air supply chamber 22 and the top plate of the blower case 5, forming a communication opening as a whole. On the bottom wall inside the air supply chamber 22, there is a closing plate 27 (fifth
) is placed to close the communication opening. This closing plate 27 simply rests on the peripheral edge of the communication opening and is not particularly fixed. Furthermore, notches 28 are formed at both end edges of the communication opening, as shown by dotted lines in FIG. Because of this, the blower case 5
It can be freely removed or attached from inside.

A hole 29 for air supply is formed on the rear surface of the air supply chamber 22, and the hole 29 can be closed by attaching a closing plate 24 with screws or the like, or connected to an air supply duct, if necessary. It can be attached to the frame body 26 with screws or the like. Therefore, this hole 29 is an opening for connecting an air supply duct.

The oven ventilation fan configured in this manner is used in the following manner.

That is, when a range ventilation fan is used in an open (usually) house, etc., it is used to perform general and local ventilation at the same time. Therefore, the air supply duct connecting hole 29 formed on the rear surface of the air supply chamber 22 is closed by the closing plate 24, and the communication opening is opened by removing the closing plate 27. As a result, when the fan 8 of the blower rotates, air is sucked into the compartment from the opening on the lower surface of the blower case 5, that is, the local ventilation opening, through the suction port 11, and is exhausted to the outside through the exhaust chamber 15 and the exhaust duct 4 ( local ventilation). At the same time, contaminated air flowing near the indoor ceiling is sucked in from the general ventilation opening formed on the front panel of the blower case 5 and the general ventilation opening 21 formed on the front wall of the air supply chamber 22, and is similarly sucked in through the exhaust duct 4. and is exhausted outside (total exhaust).

Next, in highly hermetically sealed houses, it is necessary to provide local ventilation, general ventilation, and air supply. At that time, the air supply duct connection frame 26 is attached to the hole 29 formed on the rear surface of the air supply chamber 22, and the air supply duct 25 (FIGS. 5 and 6) is connected, and the communication opening is The section is closed by a closing plate 27. As a result, local ventilation is the same as described above, but for general ventilation, the blower case 5
This is done only by means of a general ventilation hole formed in the front panel of the Fresh air from outside enters the air supply chamber 22 through the air supply duct 25, and is naturally supplied indoors from the general ventilation opening 21.

Note that, as is clear from the above description, the exhaust duct 4 is connected to the exhaust chamber 15;
This exhaust chamber 15 is not always necessary, and the exhaust duct 4 may be directly connected to the cylindrical body 13 provided in the opening 12 formed in the top plate located in the compartment of the blower case 5. The exhaust chamber 15 is particularly useful when connecting a plurality of exhaust ducts, and therefore the exhaust chamber 15 is usually provided with a plurality of openings for connecting the exhaust ducts and unnecessary openings are closed off. , or knocked out to form an opening for possible future use.

(Effects of the invention) As explained above, according to the range ventilation fan of the invention, not only local ventilation but also general ventilation is performed, so that smoke, etc. that escaped from the bottom surface of the blower case is returned to the entire blower case. It can be exhausted through the ventilation openings and the general ventilation openings of the supply air chamber. Moreover, by closing the communication opening of the air supply chamber with the blower case and connecting the air supply duct to the air supply chamber, not only local and general ventilation but also natural air supply can be achieved. It can be used freely and selectively depending on the installation location and purpose of use.

[Brief explanation of the drawing]

FIG. 1 is a top view showing a range ventilation fan according to an embodiment of the present invention installed in a kitchen, FIG. 2 is a front view of the range ventilation fan shown in FIG. 1, and FIG. Fig. 1 is a sectional view showing the range ventilation fan of the embodiment shown in Fig. 4, a perspective view showing the range ventilation fan shown in Fig. 3, and Fig. 5 is a sectional view showing the range ventilation fan of the embodiment shown in Fig. FIG. 6 is a cross-sectional view showing the range ventilation fan shown in FIG. 5 in a state where air can be supplied. 4...Exhaust duct, 5...Blower case, 7...
...Motor, 8...Fan, 10...Partition plate, 1
2... opening, 20, 23... opening, 24... closing plate, 27... closing plate, 29... hole. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A blower case 5, which has a compartment partitioned by a partition plate 10 and communicating with the exhaust duct 4 to support and house the blowers 7, 8, and 9 therein, has an open bottom surface, and has a general ventilation opening on the wall surface, and the blower case 5. a suction port 11 formed in the partition plate 10 for sucking the air in the blower case 5 into the compartment by the operation of the blower case 5; an air chamber 22, and communication openings 20, 23 formed at a close contact between the top plate of the blower case 5 and the bottom wall of the air supply chamber 22 and allowing the blower case 5 and the air supply chamber 22 to communicate with each other; , a closing plate 2 removably provided in the communication openings 20 and 23;
7, an opening 29 for connecting an air supply duct formed in the air supply chamber 22, and a closing plate 24 detachably provided in the opening.