JPH09210419A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood in which supplied air can be uniformly warmed without using any heater of wider area and there is provided a structure capable of being simplified for its facility without requiring any chamber box or the like. SOLUTION: This range hood is constructed such that a concurrent suction type air supplying or discharging device B is stored in a hood main body 1 and supplied air discharging port 14b at a top plate 1a is opened to supply surrounding air into a room. A heater 18 is mounted at the supplied air discharging port opened at the top plate of the hood main body and at the same time a protection cover 19 covering the upper surface of the heater 18 and released at a direction of crossing at a right angle with the discharging port is fixed to the upper part of the heater 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed above a cooking utensil such as a gas cooker, sucks combustion waste gas, oil smoke, odor, steam, etc. generated by cooking and exhausts them outdoors, and The present invention relates to a forced-discharging type range hood that supplies fresh air into a room.

[0002]

2. Description of the Related Art A range hood is provided above a cooking utensil for collecting and exhausting combustion exhaust gas, oil smoke, odor, etc. generated when cooking with a cooking utensil such as a gas range installed in a kitchen. A fan is installed. As a range hood fan, it prevents the negative pressure in the room due to the exhaust of indoor air due to the high airtightness of the house, and blows fresh air outside to prevent oxygen deficiency. There is a forced supply and exhaust type range hood that is forcibly supplied (introduced) into the room. The mechanism for forcibly performing the exhaust and the air supply at the same time is of a type (commonly known as 2 fan 2 motor) that performs the exhaust and the air supply by a dedicated motor and fan, respectively. Install an air supply chamber box with a built-in blower on top, connect the chamber box to a hollow curtain plate standing upright on the front edge of the top plate, and open a slit on the front surface of the curtain plate facing the room. Then, the outside air is supplied to the room through the slit.

[0003]

By the way, the above-mentioned forced supply / discharge type range hood exhausts indoor air to the outside by its operation, while fresh outdoor air is taken into the room, so in winter, especially in cold regions. In the above, when the range hood is operated, outdoor cold air is supplied to the room, which lowers the temperature of the heated room, and there is a problem that the capacity of the heating device must be increased to prevent this. . Therefore, when the outdoor air is supplied to the room, the outside air is not supplied as it is, but the outside air taken into the chamber box or the like is brought into contact with the heater to make the cool air warm, which is supplied to the room. Is proposed. Incidentally, there is a type of natural air supply in which air is supplied by an air supply duct that communicates indoors and outdoors, and the air to be supplied is warmed by a heater.
No. 141 has been proposed.

However, when the heater is used to warm the outside air supplied to the room with the above-mentioned forced supply / discharge type range hood, the heater is installed in the chamber box or the hollow curtain plate. In that case, if the air taken into the chamber box or the hollow curtain is to be evenly contacted with the heater to warm it, a heater having the same large area as the chamber box or the curtain is required, and equipment for warming up is required. As costs increase,
There is a problem that the chamber box or the hollow curtain plate itself is complicated.

The present invention has been made in view of the problems of the above-mentioned prior art. The object of the present invention is to uniformly warm the air supply without using a heater having a large area. At the same time, it is to provide a range hood having a structure that can be simplified without the need for a chamber box or the like.

[0006]

Means for Solving the Problems The technical means taken by the present invention to achieve the above object is that a double-sided suction type simultaneous air supply / exhaust air blower is built in a hood body, and air is supplied to the air blower in the air blower. Is a forced-discharging type range hood in which the outside of the hood is opened to the top plate of the hood body and the outside air is supplied to the room, and a heater is installed at the discharge port of the air supply provided on the top plate of the hood body. At the same time, a protective cover is attached above the heater so as to cover the upper surface of the heater and open in a direction orthogonal to the discharge port.

As a simultaneous air supply / exhaust blower incorporated in the hood body, a multi-blade fan housed in a fan casing is axially divided into two parts by a partition plate in the front-rear direction, and one fan (rotating shaft The tip side) is used for exhaust, the other fan (motor side) is used for air supply, and the inside of the fan casing is divided into two chambers, front and rear, on the partition plate line of the multi-blade fan, and for exhaust to the front of the front chamber. A suction port for air supply is opened on the rear surface of the rear chamber, and the suction port of the rear chamber is connected to the air supply duct.

A PTC heater (positive temperature coefficient thermistor) can be effectively used as a heater installed at the discharge port of the air supply provided on the top plate of the hood body due to its characteristics. Further, the above-mentioned heater may be automatically turned on / off in conjunction with the operation / stop of the blower.
An on / off switch dedicated to the heater may be separately provided.
With the above configuration, by operating the range hood, combustion exhaust gas, oil smoke, odor, etc. generated due to cooking are sucked and exhausted, and at the same time fresh outdoor air is supplied through the duct to the air supply chamber in the fan casing. The air is sucked into the room and is supplied to the room through the discharge port provided on the top plate of the hood body. Then, the supply air is heated by a heater installed at the discharge port and supplied to the room. Moreover, since the discharged air hits the heater at the place with the highest wind speed, the heat of the heater is evenly transmitted,
Uniform heated air is supplied into the room. Further, when the heater on / off switch is separately provided, heating of the supply air can be selected as required.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows a blower system for forced air supply and exhaust
1 shows a range hood fan provided with an air blower composed of a fan 1 motor, 1 is a vertical hood main body having an open lower surface, inside of which a bottom plate 2 is attached in the vicinity of a lower end in a forward and upward direction. Top of the hood and the top plate 1a of the hood body 1
The filter support frame 3 is attached to the tip of the filter and the inner surfaces of the left and right side plates 1b and 1c, and the filter 4 is detachably attached to the filter support frame 3 and the front plate 5 is detachable from the front opening of the hood body 1. To form a hood A, and a blower B is housed and installed inside the hood main body 1 defined by the bottom plate 2 and the filter 4 in the hood A.

The blower device B comprises a fan casing 6 having a volute shape, a multi-blade fan 7 housed in the fan casing 6, and a motor 8 for driving and rotating the multi-blade fan 7. The multi-blade fan 7 housed in 6 is composed of an exhaust fan 7a and an air supply fan 7b arranged back to back with a partition plate 7c also serving as a power transmission plate sandwiched therebetween. The inside of the fan casing 6 is divided into front and rear chambers by a partition wall 9 provided on the line of the partition plate 7c. And, the suction port 10a for exhaust is provided on the front surface of the front chamber 6a facing the filter 4.
Is formed and a suction port 10b for air supply is formed on the rear surface of the rear chamber 6b facing the back plate 1d of the hood body 1, and the suction port 10b for air supply is formed on the back plate 1d in the hood body 1. To communicate with the air supply chamber 11 formed on the side, and further to the air supply chamber 11
An inlet 11a opened on the top plate side of is connected to an air supply duct 13 communicating with the outside through a duct joint 12. Inside the duct joint 12, a shutter in which the passage of the duct joint is opened and closed by a motor, an electromagnetic solenoid, etc. (not shown)
12a is provided so that the outside air is not introduced (air supply) when the range hood fan is not used.

The front chamber 6a of the fan casing 6 is also provided.
The discharge port 14a is connected to the exhaust duct 16 through a duct joint 15 fixed to the top surface of the top plate, and is configured to suck combustion waste gas, oil smoke, etc. generated due to cooking and discharge it to the outside. ing. Discharge port of the rear chamber 6b of the fan casing 6
14b is communicated with the outside of the hood A through a through hole formed in the top plate 1a, and a PTC heater 18 is installed by a mounting frame 17 in the through hole portion of the top plate 1a. The upper surface of the PTC heater 18 is covered with a protective cover 19 that covers the upper surface and is open in a direction orthogonal to the discharge port, so that dust or the like does not come into direct contact with the PTC heater 18. The PTC heater 18 may be turned on / off in conjunction with the operation / stop of the blower device B, but if it is desired to stop the function depending on the season, the dedicated on / off switch ( (Not shown) is attached to the front surface of the front plate 5 together with a switch or the like for operating / stopping the blower.

Further, the hood body 1 in the hood A is
A curtain plate 20 that shields the air supply duct 13 and the exhaust duct 16 connected to the hood A from the front of the hood so as to be invisible from the front of the hood is erected upright to the ceiling 22 on the front upper surface of the top plate 1a. A ventilation hole 21 is formed in the room so that the air supplied to the space between the ceiling plate 1a of the hood body 1 and the ceiling is evenly distributed in the room. The air supplied to the top side flows into the room not only through the vent holes 21 of the curtain plate 20 but also through the gaps with the hanging cabinets arranged on both the left and right sides of the range hood fan.

With the above structure, when the air blower B is operated, the combustion waste gas, oil smoke, etc. generated by cooking due to the rotation of the exhaust fan 7a is sucked into the front chamber 6a through the filter 4, It is discharged outdoors through the exhaust duct 16. On the other hand, by the rotation of the air supply fan 7b, fresh outdoor air is sucked into the rear chamber 6b via the air supply duct 13 and the air supply chamber 11,
The outside air has its wind speed increased and is supplied (exhausted) from the discharge port 14b to the space between the top plate 1a and the ceiling 22.
Since the PTC heater 18 is installed in the portion 14b, the outside air discharged by increasing the wind speed touches the PTC heater 18 and is uniformly heated, so that the warmed outside air is supplied to the room. . Therefore, when the cold outside air in the winter is supplied, the indoor heating effect is not deteriorated because the room is warmed and supplied as described above. The heater is provided with its own on / off switch, so that when the outside air does not need to be warmed, the heater does not function and the outside air can be directly supplied into the room.

[0014]

According to the range hood of the present invention, according to the structure of claim 1, the supply air can be uniformly and uniformly heated without using a heater having a large area, and the equipment therefor is a chamber box on the top plate. It can be simplified without cost and can be made inexpensive. And since a protective cover is provided above the heater, dust etc. may touch the heater directly,
No dust collects on the heater, so it can be used with confidence. Further, according to the configuration of claim 2, when it is not necessary to warm the outside air, the heater can be turned off and the outside air can be supplied as it is, so that it can be used comfortably throughout the year.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an example of an embodiment of a range hood according to the present invention.

FIG. 2 is a cutaway plan view of the same part.

FIG. 3 is a cutaway front view of the same part.

FIG. 4 is a vertical side view taken along the line (3)-(3) of FIG.

[Explanation of symbols]

A ... Hood B ... Blower 1 ... Hood main body 1a ... Top plate 6 ... Fan casing 7 ... Multi-blade fan 14a ... Air supply outlet 18 ... Heater (PTC
Heater) 19… Protective cover

Claims (2)

[Claims] 1. A hood main body has a built-in double-sided suction type simultaneous air supply / exhaust air blower, and an air supply outlet of the air blower is opened in a top plate of the hood main body to force outside air to be supplied indoors. In a feed-and-discharge type range hood, a heater is installed at the air supply outlet provided on the top plate of the hood main body, and the upper surface of the heater is covered so as to cover the upper surface of the heater and open in a direction orthogonal to the outlet. A range hood with a cover attached. 2. The range hood according to claim 1, further comprising an on / off switch for the heater.