JPH0674514A - Range hood - Google Patents

Abstract

PURPOSE:To provide a range hood in which surrounding air of low temperature is not directly contacted with a cooking person and a collection of smoke is not deteriorated even if there is a flow of air of lateral wind and the like. CONSTITUTION:An air supplying box 10 for supplying surrounding air is arranged at an upper part of a hood main body 1. A separating member 11 for separating supplied air flow is installed in the air supplying box 10. An upper air directing plate 12 and a lower air directing plate 13 are arranged in correspondence with the separating member 11 in such a manner that they are adjusted so as to adjust a flowing direction of the surrounding air into the kitchen 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood for discharging exhaust gas, oil smoke, odor, etc. generated from a cooker to the outside.

[0002]

2. Description of the Related Art In recent years, due to the confidentiality of houses, operating a range hood provided in a kitchen room causes a negative pressure in the kitchen room, which makes it difficult to ventilate efficiently. Trend hoods are widespread.

A conventional range hood of this type is shown in FIG.
The description will be made with reference to FIG. As shown in the figure,
An electric motor 102 and a fan casing 104 having blades 103 driven by the electric motor 102 are provided in a box-shaped hood body 101 having front and bottom surfaces opened. A suction port 105 for inhaling air and a discharge port (not shown) communicating with the outside are provided. And the hood body 1
An air supply duct 106 communicating with the outside and an air supply box 109 having an air supply louver 108 having a vent hole 107 on the front surface are provided in communication with the upper part of 01.

On the front surface of the hood body 101, there is provided a front hood 110 which is inclined so that the lower surface opening of the hood becomes large.

In the above structure, when the range hood is operated, the fumes generated from the cooker in the kitchen room is sucked into the fan casing 104 and exhausted to the outside, and the inside of the kitchen room becomes a negative pressure, and accordingly the outside air is supplied. Duct 10
6 and the air supply box 109, and the air is supplied to the kitchen room through the ventilation port 107 of the air supply louver 108 so that the negative pressure state in the kitchen room is relaxed.

[0006]

In such a conventional range hood structure, since the air vent 107 provided in the air supply louver 108 is simply opened, the air flow of the air supply is changed to the air vent. Since it is blown horizontally from 107 and diffused into the kitchen room, when the outdoor temperature is low, such as in winter,
There is a problem that the cold air that has invaded directly touches the cook who is cooking in front of the cooker in the kitchen, and the cook feels cold. In addition, when there is a flow of air current such as cross wind, there is also a problem that the collection of smoke and the like becomes worse.

The present invention solves the above-mentioned problems and is a range in which cold outside air does not come into direct contact with the cooker and the collection of smoke and the like does not deteriorate even when there is a flow of air current such as cross wind. The primary purpose is to provide a hood.

A second purpose is to change the temperature of the outside air,
It is to adjust the air volume automatically so as not to adversely affect the heating and cooling in the kitchen room.

A third object is to reduce the temperature drop in the room in winter.

[0010]

In order to achieve the above-mentioned first object, the range hood of the present invention comprises a box-shaped electric motor having an opening on the front surface and the bottom surface for forming an exhaust flow therein. A front hood provided so as to cover the front opening of the hood body provided with the blades and the fan casing, and an air supply louver connected to the air supply duct for supplying the outside air and communicating with the kitchen room. The air supply box provided in the air supply box, and the upper separation plate and the lower separation plate are laterally V-shaped with the apex on the windward side so that the air flow is separated upward and downward in the air supply louver. A separation member formed in, and an upper wind direction plate and a lower wind direction plate that are movable ends are freely contactable to the windward side of the upper separation plate and the lower separation plate of the separation body, and are opened and closed with the leeward side as a fulcrum. The upper wind direction plate and the lower part A configuration that allowed to control the outside air charge air flow by moving countercurrent plate.

In order to achieve the second object, the second
This means is configured such that the movable ends of the upper wind direction plate and the lower wind direction plate are connected by a shape memory alloy that expands and contracts according to the temperature of the air flow.

In order to achieve the third object, the third
In the above means, an air supply passage communicating with a part of the air supply box is provided along the front hood, and an outlet of the air supply passage is formed toward the hood body.

[0013]

According to the present invention, the configuration of the above-mentioned first means adjusts the directions of the upper wind direction plate and the lower wind direction plate according to the temperature of the outside air, so that the supplied airflow is directed toward the upper wind direction plate and the lower wind direction plate. It follows that the air flows along and it is possible to adjust so that the outside air does not come into direct contact with the cooker when cooking in front of the cooker in the kitchen room.

Further, according to the structure of the second means, the shape memory alloy expands and contracts according to the temperature of the outside air to automatically adjust the air passage area formed between the upper wind direction plate and the lower wind direction plate,
The amount of outside air supplied will be adjusted.

With the structure of the third means, a part of the outside air supplied to the air supply box passes through the air supply passage and is discharged into the hood body as it is without contact with the room air. As a result, the temperature change in the kitchen room due to the outside air is alleviated.

[0016]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, the electric motor 2 is provided in a box-shaped hood body 1 having front and bottom surfaces opened.
And a fan casing 4 provided with blades 3 driven by the electric motor 2. The fan casing 4 has a suction port 5 for sucking air from the opening of the hood body 1 and a discharge port (not shown) communicating with the outside. The front of the hood body 1 is provided with a front hood 6 which is inclined so that the lower opening of the hood is large.

An air supply duct 7 for supplying outside air is connected to the upper part of the hood body 1 and is connected to the air supply duct 7.
An air supply box 10 provided with an air supply louver 9 that communicates with the kitchen room 8 is provided. Inside the air supply louver 9, the airflow is separated toward the upper direction and the lower direction of the air supply louver 9 so that the airflow is separated. Top separation plate 11a and bottom separation plate 1 at the top
1 b is provided with a separating body 11 formed in a lateral V shape, and movable ends are freely contactable with the windward parts of the upper separating plate 11 a and the lower separating plate 11 b of the separating body 11 and in the vicinity of the air supply louver 9. An upper wind direction plate 12 and a lower wind direction plate 13 that are opened and closed with the leeward side of the position as a fulcrum are provided and configured.

The operation of the range hood having the above structure will be described below. The upper wind direction plate 12 and the lower wind direction plate 13 are shown in FIG.
When the range hood is operated in the state where it is set to the position of (b) in FIG. 2, oil smoke generated from the cooker (not shown) is sucked by the blades 3 driven by the electric motor 2 and sucked into the suction port of the fan casing 4. 5 is sucked in and discharged.

Then, the inside of the kitchen room 8 gradually becomes negative pressure,
Outside air enters the air supply box 10 through the air supply duct 7, is separated by the separator 11, and is an obliquely upward air flow path formed by the upper separation plate 11a and the upper wind direction plate 12, the lower separation plate 11b, and the lower wind direction plate. Air is supplied from the air supply louver 9 into the kitchen room 8 through an obliquely downward air flow path formed by 13, and the air supply air supplied through the obliquely downward air flow path is the surface of the front hood 6. Therefore, the lower surface of the front hood 6 can flow downward. As a result, the inside of the front hood 6 is not disturbed even when there is an air flow in the front part of the front hood 6 during cooking, so that the collection of oil smoke is stable.

When adjusting the air supply air supplied from the air supply louver 9 into the kitchen room 8, for example, the upper wind direction plate 1
When 2 is set to the a position and the lower wind direction plate 13 is set to the c position, the supplied airflow in the air supply box 10 flows along the surface of the upper separation plate 11a, and from the upper part of the air supply louver 9. Air is supplied to the kitchen room 8.

Also, with the upper wind direction plate 12 at the position of C,
When the lower wind direction plate 13 is set to the position a, the air supply air supplied into the air supply box 10 flows along the surface of the lower separation plate 11b, and from the lower part of the air supply louver 9 to the front hood 6.
Air is supplied downward along the surface. Further, when both the upper wind direction plate 12 and the lower wind direction plate 13 are set to the position of “c”, the inflow of outside air is blocked in the air supply box 10.

According to the range hood of the first embodiment of the present invention as described above, when the outside air temperature is low such as in winter, the upper wind direction plate 12 is set to the position a and the lower wind direction plate 13 is set to the position c. As a result, the outside air having a low temperature to be supplied is supplied toward the upper surface of the kitchen room 8, and the outside air is prevented from coming into direct contact with the cooker, so that the person does not feel cold.

Further, in winter, by setting the upper wind direction plate 12 to the c position and the lower wind direction plate 13 to the a position, the air supply air comes in contact with the cooker and a cool feeling can be obtained.

When the range hood is not operated in winter, the upper wind direction plate 12 and the lower wind direction plate 1
By setting all 3 to the position of "c", invasion of low temperature outside air is prevented, and it is possible to prevent deterioration of heating efficiency in the kitchen room 8.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the drawing, the windward end portions of the upper wind direction plate 12a and the lower wind direction plate 13a provided in the air supply box 10 are extended substantially horizontally, and the extended movable end is extended depending on the temperature of the supply air flow. Extend and contract shape memory alloy 14 shaft 15
It is configured to be connected via.

With the above-mentioned structure, the shape memory alloy 14 expands due to the high temperature of the air supply in summer, and the upper wind direction plate 12a.
The air supply opening 16 formed between the lower airflow direction plate 13a and the lower airflow direction plate 13a expands, the air supply flow rate increases, and the shape memory alloy 14 contracts and the air supply opening 16 becomes narrow due to the low temperature of the air supply in winter. Therefore, the supply air amount is automatically controlled to the minimum required flow rate.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the air supply flow communicates with the air supply port 17 on the lower side of the air supply louver 9 that flows into the kitchen chamber 8 and also extends downward along the surface of the front hood 6. 18 is formed, and the discharge port 19 at the end of the air supply passage 18 is formed to face the inside of the hood body 1.

With the above structure, in winter, a part of low-pitched outside air enters the air supply passage 18 from the air supply box 10 through the air supply port 17 below the air supply louver 9, and then from the exhaust port 19. It is directly discharged into the hood main body 1 and discharged to the outside, so that it is possible to reduce the temperature drop in the room.

[0031]

As is apparent from the abnormal embodiment, according to the present invention, a separating body and a movable wind direction plate are provided in the air supply box for supplying the outside air to the kitchen room to change the wind direction of the supply air flow. As a result, the outside air supplied to the kitchen can be controlled so that the cold does not come into direct contact with the cooker when the temperature is low in the winter, and the coolness can be felt by touching the cook directly in the summer. A range hood that can be obtained can be provided.

Moreover, since the amount of air supplied can be adjusted according to the temperature of the outside air, a comfortable kitchen environment can be obtained. Also,
Even if the air flow around the range hood is disturbed, the collection of oily smoke and the like will be more stable than before.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which a range hood according to a first embodiment of the present invention is installed.

FIG. 2 is an enlarged cross-sectional view of an air supply box portion of the first embodiment.

FIG. 3 is an enlarged sectional view of an air supply box portion of the second embodiment.

FIG. 4 is a sectional view showing a state in which the range hood of the third embodiment is installed.

FIG. 5 is a sectional view showing a state in which a conventional range hood is installed.

FIG. 6 is an enlarged sectional view of the air supply box portion.

[Explanation of symbols]

 1 Hood Main Body 2 Electric Motor 3 Blade 4 Fan Casing 6 Front Hood 7 Air Supply Duct 8 Kitchen Room 9 Air Supply Louver 10 Air Supply Box 11 Separator 11a Upper Separation Plate 11b Lower Separation Plate 12, 12a Upper Wind Direction Plate 13, 13a Lower Wind Direction Plate 14 Shape memory alloy 18 Air supply passage 19 Discharge port

Claims (3)

[Claims] 1. A hood main body provided with an electric motor for forming an exhaust flow, blades and a fan casing in the shape of a box having front and bottom surfaces opened, and a front hood provided so as to cover the front opening of the hood main body. An air supply duct for supplying outside air, an air supply louver connected to the air supply duct and communicating with the kitchen room, and an air supply box provided on the upper part of the hood body, and an air supply in the air supply box A separator in which an upper separating plate and a lower separating plate are formed in a horizontal V shape with the windward side as an apex so that the airflow is separated and flows toward the upper part and the lower part of the louver, and the upper separating plate and the lower part of this separating member. The separating plate is provided with an upper wind direction plate and a lower wind direction plate whose movable end is freely abuttable and which is opened and closed with the leeward side as a fulcrum,
A range hood configured to control the supply of outside air by moving the upper wind direction plate and the lower wind direction plate. 2. The range hood according to claim 1, wherein the movable ends of the upper wind direction plate and the lower wind direction plate are connected by a shape memory alloy that expands and contracts according to the temperature of the air flow. 3. The range hood according to claim 1, wherein an air supply passage communicating with a part of the air supply box is provided along the front hood, and an outlet of the air supply passage is formed toward the inside of the hood body.