JP2003194379A - Range hood fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently collect and exhaust an ascending current in any state, such as a weak ascending current of much vapor generated in heat cooking over low heat on a gas stove, a weak ascending current of soot and steam generated in heat cooking on an IH cooking heater of high heat conduction efficiency, and a strong ascending current of soot and steam generated in heat cooking over high heat on a gas stove. <P>SOLUTION: A range hood fan comprises a hood part for increasing exhaust collection efficiency, and a blower. In the hood, a plurality of straightening plates are arranged at different arrangement angles. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood fan excellent in exhaust gas collection performance.

[0002]

2. Description of the Related Art Conventionally, a range hood fan has a rectifying plate installed in the hood in order to improve the efficiency of collecting exhaust gas, increases the inflowing wind speed around the rectifying plate, and guides the exhaust smoke together with the ambient air to the blower and exhausts it to the outside. Such a method was adopted. Also,
A large amount of steam generated when cooking with a low heat of a gas stove, oil smoke generated when cooking with an IH cooking heater with high heat transfer efficiency, steam, etc., have low temperature rise of the gas stove, IH cooking heater and ambient air,
Since the amount of updraft is small, smoke can easily diffuse out of the hood. Therefore, in order to improve the efficiency of exhaust gas collection, the straightening vanes are installed as shown in Figs. A method was used to collect the smoke before it spreads. However, when the straightening vanes are installed diagonally in this way, the exhaust fumes such as oil fumes and water vapor generated when heating and cooking with a high-pressure gas stove have a strong updraft, so the straightening vanes form a strong exhaust flow upward and forward. There was a problem such as leakage.

Also, when one straightening plate is installed diagonally as shown in FIGS. 3 and 4, the size of the hanging cabinet which is usually installed beside the range hood fan is 700 mm from the ceiling surface and from the wall surface at the back. Since it is 365 mm, and the side surface of the hood portion of the range hood fan protrudes larger than the hanging cabinet, there are problems that the entire kitchen looks unattractive and that there is a feeling of pressure from the front when cooking.

Further, a large amount of water vapor generated when cooking with a low heat of a gas stove, and oil smoke and water vapor generated when cooking with an IH cooking heater having a high heat transfer efficiency have a weak updraft, so that a range hood fan has a 1 straightening plate
In the case of one sheet, there is a problem that dew condensation water is easily attached because there is no air flow on the surface of the current plate.

Further, the conventional range hood fan installed with the straightening vanes has a structure in which oil smoke and water vapor adhering above the straightening vanes are received by the back face of the straightening vanes and collected in the oil pockets. There was a problem that the attached dew water could not be collected.

[0006] A large amount of weak steam of ascending air current generated when heating and cooking with a low heat of a gas stove, oily smoke and water vapor of weak ascending air current generated when heating and cooking with an IH cooking heater having high heat transfer efficiency, and high heat of a gas stove. It is to increase the exhaust gas collection efficiency by setting the optimal exhaust suction port width according to the state of the rising airflow and the cooking method, such as oil smoke and steam with a strong rising airflow generated when heating and cooking.

[0007]

The first object of the present invention is to construct three or more exhaust gas intake ports having a high inflow wind speed in the lateral direction, so that a large amount of rise that occurs when cooking with a low heat of a gas stove. Steam with weak air flow and high heat transfer efficiency I
What is the state of the ascending airflow, such as oily smoke and steam with a weak updraft that are generated when cooking with an H cooking heater, and oily smoke and steam with a strong ascending airflow that is generated when cooking with a high-pressure gas stove? Collects efficiently,
It's about exhausting.

The second object of the present invention is to make the exhaust air intake with a high inflow wind speed close to the place where oil smoke and water vapor are generated and to make the side shape of the hood sideways to the side of the range hood fan in order to improve the efficiency of collecting waste air. By increasing the design of the entire kitchen by passing the vicinity of a point 700 mm from the ceiling surface and 365 mm from the back wall surface of the size of the hanging cabinet to be installed, and by making the range hood fan look thin, it can be used. It is to reduce the feeling of pressure on the person from the front.

A third object of the present invention is to produce a large amount of water vapor generated when cooking with a low heat of a gas stove, oil smoke with a weak updraft generated when cooking with an IH cooking heater having high heat transfer efficiency, water vapor and the like. Even if there is, it is to make the air flow flow along the surface of the current plate to make it difficult for condensed water to adhere to the surface of the current plate.

An object 4 of the present invention is to produce a large amount of steam generated when cooking with a low heat of a gas stove, oil smoke of a weak upward airflow generated when cooking with an IH cooking heater having high heat transfer efficiency, steam, etc. This is to prevent the diffusion and also to collect the condensed water on the surface of the current plate.

An object 5 of the present invention is to improve the cleaning performance by guiding and collecting oil and water attached to the inside of the main body and the hood and oil and water attached to a plurality of straightening vanes to the lowermost straightening vanes. is there.

An object 6 of the present invention is to improve the cleaning performance by guiding and collecting the oil and water attached to the inside of the main body and the hood, and the oil and water attached to a plurality of straightening vanes into a removable oil pocket. Especially.

An object 7 of the present invention is to guide and collect oil and water adhering to the inside of the main body and the hood, and oil and water adhering to a plurality of straightening vanes to a removable bottom straightening vane / oil pocket. Is to improve the sex.

An object 8 of the present invention is to form a removable oil pocket for collecting oil and water adhering to the inside of the main body and the hood and the oil and water adhering to a plurality of flow rectifying plates by using a transparent material, and cleaning time. To inform the user.

A ninth object of the present invention is to obtain a large amount of weak steam generated by heating when cooking with a low heat of a gas stove, and oily smoke having a weak rising air generated when cooking with an IH cooking heater having high heat transfer efficiency. , Steam, oily smoke with a strong upward airflow generated when cooking with high heat on a gas stove, steam, etc., to set the optimum exhaust inlet width according to the state of the upward airflow and the cooking method to improve waste gas collection efficiency It is in.

A tenth object of the present invention is to provide a large amount of weak steam generated when heated and cooked with a low heat of a gas stove, and oily smoke whose heated air is weakly cooked with an IH cooking heater having high heat transfer efficiency. , To prevent lateral diffusion of water vapor.

An object 11 of the present invention is to reduce the feeling of pressure from the range hood fan to the user and to enhance the efficiency of collecting waste air.

An object 12 of the present invention is to use an existing propeller-type ventilation fan as it is, and heat it with an IH cooking heater having a high heat transfer efficiency and a large amount of water vapor with a weak updraft that is generated when heating and cooking with a low heat of a gas stove. An object of the present invention is to provide a hood that efficiently collects even oily fumes and steam with a weak updraft that is generated at that time.

An object 13 of the present invention is that the existing propeller-type ventilation fan square hole in the building is used as it is, and the exhaust gas collecting efficiency is excellent and the fan cleaning property and maintenance property are excellent regardless of the strength of the ascending airflow. To provide a range hood fan.

The object 14 of the present invention is that the object of the present invention is that the exhaust gas collection efficiency is excellent regardless of the strength of the ascending airflow, and that the design, the cleaning of the fan, the hood, and the straightening vane, the maintainability, and the replacement are compatible. To provide an excellent range hood fan.

[0021]

In a range hood fan comprising a hood portion and a blower for improving exhaust gas collection efficiency, it can be achieved by installing a plurality of straightening vanes having different installation angles in the hood.

The side shape of the hood portion can be achieved by passing it near the line where the surface 700 mm below the ceiling surface and the surface 365 mm before the wall surface in the back collide with each other when installed in the kitchen.

This can be achieved by installing a plurality of straightening vanes so as to overlap each other.

Each of the straightening vanes can be achieved by installing the straightening vanes so as to overlap with the upper side of the straightening vanes installed in the lower part thereof.

Each straightening vane is formed by a box body having an upper opening, and a drain is provided at the bottom of the box body, and the water and oil collected by each straightening vane are finally guided to the bottom straightening vane. This can be achieved by using a collecting structure.

This can be achieved by providing a drain on the lowermost rectifying plate and arranging the oil and water dropped from the drain to collect from the hood in a removable pocket.

This can be achieved by integrally forming the lowermost straightening plate and the oil / water reservoir for collecting oil and condensed water, and making it detachable from the hood.

This can be achieved by forming the pocket portion, which is detachable from the hood portion and collects oil and condensed water, from a transparent material.

A gap distance between the uppermost first straightening vane and the under cover, a gap distance between the first straightening vane and the second straightening vane, and a gap distance between the second straightening vane and the lowermost third straightening vane are different from each other. This can be achieved by configuring the distance.

This can be achieved by forming the rectifying plate in a trapezoidal shape and changing the gap distance between the rectifying plate side surface and the hood side surface in the front-back direction.

This can be achieved by bending one or more of the current plate.

This can be achieved by providing a chamber box on the upper part of the hood and installing a propeller type ventilation fan in the chamber box.

This can be achieved by providing a propeller-type ventilation fan and a chamber box on the upper part of the hood, and providing a ventilation port communicating with the outside in the chamber box.

This can be achieved by installing a rectifying plate for enhancing exhaust gas collection efficiency in the hood, providing a propeller-type ventilation fan and a chamber box on the upper part of the hood, and providing a ventilation port communicating with the outside in the chamber box.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1, 5, 7, 8, 9, and 10 are sectional views of a range hood fan according to an embodiment of the present invention.
Is a side view of the range hood fan and the hanging cabinet, and FIG. 6 is a front view of the range hood fan.

Reference numeral 1 is a blower for sucking in the exhaust air and exhausting it to the outside. Inside, a sirocco fan for high static pressure 2
And the electric motor 3 that transmits rotational force to the sirocco fan 2.
And a bell mouth 4 for smoothly sucking in the wind is built in. An exhaust duct 5 connects the blower 1 to the outside. Reference numeral 6 denotes a hood upper plate, on which the blower 1 and the curtain plate 7 are installed on the upper side, and a hood portion 8 is formed on the lower side.
The position of the surface of the curtain plate 7 is set at a position 365 mm away from the wall surface 9, and coincides with the surface position of the hanging cabinet 10 installed on the side of the range hood fan. Reference numeral 11 denotes a side plate of the hood portion, and its ridge line 12 has a shape passing near the point where the surface and the lower surface of the hanging cabinet 10 coincide. Inside the hood, the first rectifying plate 13, the second rectifying plate 14, and the third rectifying plate
The right and left hood side plates 11 are arranged so that the straightening vanes 15 have different installation angles so that the respective straightening vanes overlap the lower straightening vanes.
It is fixed to. In addition, the gap a between the straightening vanes 13 and 14
17, the gap b18 between the flow straightening plate 14 and the flow straightening plate 15, and the gap c19 between the flow straightening plate 15 and the under cover 16 are different in size. Further, the lower end of the second straightening vane 14 is provided so as to be located on the fan side (downstream side) of the first straightening vane 13.

Reference numeral 20 denotes an oil reservoir for collecting oil and condensed water, and one communication hole 22 communicating with a removable oil pocket 21 made of a transparent material is formed at one position. 23 is a lamp cover made of the same transparent material as the oil pocket.
It has four built-in lamps and is installed at two locations on both sides of the oil pocket. Side plate 11 and trapezoidal second straightening plate 14
The lateral gap 25 between and is so wide that it goes upward.

Reference numeral 26 is a curved second straightening plate, which forms a thin hood portion of the range hood fan. Second straightening plate 1
4 and the third straightening vane 15 are formed in a box shape, and the received oil and water are transferred from the third straightening vane 15 to the second straightening vane 14 and from the second straightening vane 14 to the 27th third straightening vane / oil pocket. A drain 28 for guiding and collecting is provided. Reference numeral 29 denotes a chamber box that constitutes an intake passage, and is installed on the hood upper plate 6. On the side surface or rear surface of the 29 chamber box, a propeller-type ventilation fan 30 that communicates with the outside is installed.

In FIGS. 9 and 10, a propeller type ventilation fan 30 having a back wind prevention shutter 31 is installed on the hood upper plate 6 and communicates outdoors with a square duct 32.

A large amount of weak steam of ascending air current generated when cooking with a low heat of a gas stove, oily smoke and water vapor of weak ascending air current generated when cooking with an IH cooking heater having high heat transfer efficiency, and a high flame of a gas stove. Oil smoke, water vapor, etc. with a strong updraft that is generated when cooked in the above manner draws oil fumes, water vapor, etc. to the wall surface 9 side in the gap a17 regardless of the state of the updraft. Most of the oil smoke or water vapor is sucked in the gap b, and the oil smoke or water vapor that is about to diffuse and leak from the front is sucked in from the gap c19. One blower or 30 or 31 propeller type ventilation fan can be used for 5 ducts. Alternatively, it is configured to be discharged to the outside from 32 corner ducts. Further, the suction flow from each gap flows along the straightening vanes, so that oil and water vapor are unlikely to adhere to the straightening vanes. Further, the water or oil adhering to the blower 1 or the propeller type ventilation fans 30 and 31 and the inside of the hood 8 can be collected on the back surface of each straightening plate when dripped and guided and collected in the oil pocket. In addition, oil and dew condensation water adhering to the surfaces of the straightening vanes 15 and 14 are also collected on the surface of the straightening vanes and finally collected in the oil pocket.

[0042]

As is apparent from the above description, since a plurality of straightening vanes having different installation angles are installed in the hood,
Exhaust inlets with increased inflow wind speed can be configured in three or more locations in the horizontal direction, and a large amount of weak steam of upward airflow generated when heating and cooking with a low-pressure gas stove, and when cooking with an IH cooking heater with high heat transfer efficiency Efficiently collects and exhausts no matter what the state of the ascending airflow is, such as oily mist or water vapor with a weak ascending airflow, or oily smoke or water vapor with a strong ascending airflow that is generated when cooking with a strong flame on a gas stove. can do.

Further, the side shape of the hood portion is set to pass in the vicinity of the line where the surface 700 mm below the ceiling surface and the surface 365 mm in front of the back wall surface are in contact with each other when installed in the kitchen. In order to improve the efficiency of collecting waste air, bring the exhaust air intake with a high inflow wind speed close to the place where oil smoke and water vapor are generated, improve the design of the kitchen as a whole, and make the range hood fan look thin. Thus, it is possible to reduce the feeling of pressure on the user from the front.

Further, since a plurality of rectifying plates are installed so as to overlap each other, a large amount of water vapor generated when heating and cooking with a low heat of the gas stove, and when heating and cooking with an IH cooking heater having high heat transfer efficiency. Even if the oil mist, water vapor, or the like having a weak updraft, the airflow flows along the surface of the straightening vane, it is possible to make it difficult for the condensed water to attach.

Further, since each of the straightening vanes is installed so as to overlap with the upper side of the straightening vane installed in the lower part thereof, a large amount of water vapor generated when heating and cooking with a low heat of the gas stove and high heat transfer efficiency. It is possible to prevent the diffusion of oil smoke, water vapor, etc. of a weak updraft that occurs when cooking with an IH cooking heater, and also to collect the condensed water on the surface of the current plate.

Further, each straightening plate is formed by a box body having an opening at the top, and a drain is provided at the bottom of the box body.
Since the water and oil collected by each straightening vane are finally led to the lowermost straightening vane and collected, the cleanability can be improved.

Further, since the drain is provided on the lowermost straightening plate, the oil and water dropped from the drain are collected in the detachable pocket from the hood portion, so that the cleanability can be improved.

Further, since the lowermost straightening plate and the oil / water reservoir for collecting oil and condensed water are integrally formed and detachable from the hood portion, the cleanability can be improved.

Further, since the pocket portion which is detachable from the hood portion and collects oil and condensed water is formed of a transparent material, it is possible to inform the user of the cleaning time.

The gap distance between the uppermost first straightening vane and the under cover, the gap distance between the first straightening vane and the second straightening vane,
Since the gap distances between the second straightening vane and the lowermost third straightening vane are configured to be different from each other, a large amount of weak steam of the ascending air current generated when heating and cooking with a low heat of the gas stove and heat transfer efficiency. Depending on the state and cooking method of the ascending airflow, such as oily smoke and steam with a weak updraft that is generated when cooking with a high IH cooking heater, and oily smoke and steam with a strong ascending airflow that is generated when cooking with a high-pressure gas stove The optimum exhaust air intake width can be set to increase the waste air collection efficiency.

Further, since the straightening vane is formed in a trapezoidal shape and the gap distance between the side face of the straightening vane and the side face of the hood is changed in the front-rear direction, a large amount of ascending air current generated when the gas stove is cooked under low heat is used. Weak water vapor and high heat transfer efficiency I
It is possible to prevent lateral diffusion of oily smoke, water vapor, etc. having a weak updraft that is generated when cooking with the H cooking heater.

Further, since one or more of the straightening vanes are curved, it is possible to reduce the feeling of pressure from the range hood fan to the user and increase the efficiency of collecting waste air.

Further, since a chamber box is provided on the upper part of the hood and a propeller type ventilation fan is installed in the chamber box, a large amount of heat is generated when the existing propeller type ventilation fan is used as it is for heating and cooking with a low heat on the gas stove. It is possible to provide a hood that efficiently collects even water vapor with a weak updraft, oily smoke with a weak updraft generated when cooking with an IH cooking heater having high heat conduction efficiency, and steam.

Further, since a propeller-type ventilation fan and a chamber box are provided on the upper part of the hood, and the chamber box is provided with a ventilation port communicating with the outside, the existing propeller-type ventilation fan square hole in the building is left as it is and the ascending airflow is maintained. It is possible to provide a range hood fan which has excellent waste air collection efficiency and excellent fan cleaning property and maintainability regardless of the strength of the fan.

Further, a rectifying plate for enhancing exhaust gas collection efficiency is installed in the hood, a propeller-type ventilation fan and a chamber box are provided on the upper part of the hood, and the chamber box is provided with a ventilation port communicating with the outside. It is intended to provide a range hood fan having excellent air collection efficiency, fan cleanability, maintainability, and replacement compatibility.

[Brief description of drawings]

FIG. 1 is a sectional view of a range hood fan showing an embodiment of the present invention.

FIG. 2 is a side view of the range hood fan and the hanging cabinet showing an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional range hood fan.

FIG. 4 is a side view of a conventional range hood fan and a hanging cabinet.

FIG. 5 is a sectional view of a range hood fan showing an embodiment of the present invention.

FIG. 6 is a front view of a range hood fan showing an embodiment of the present invention.

FIG. 7 is a sectional view of a range hood fan showing an embodiment of the present invention.

FIG. 8 is a sectional view of a range hood fan showing an embodiment of the present invention.

FIG. 9 is a sectional view of a range hood fan showing an embodiment of the present invention.

FIG. 10 is a sectional view of a range hood fan showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Blower, 2 ... Sirocco fan, 3 ... Electric motor, 4 ... Bell mouth, 5 ... Duct, 6 ... Hood top plate, 7 ... Curtain plate, 8
... Hood part, 9 ... Wall surface, 10 ... Hanging cabinet, 11 ... Hood side plate, 12 ... Side plate ridge line, 13 ... First straightening plate, 14 ... Second
Rectifier plate, 15 ... Third rectifier plate, 16 ... Under cover, 1
7 ... Gap a, 18 ... Gap b, 19 ... Gap c, 20 ... Oil reservoir, 21 ... Oil pocket, 22 ... Communication hole, 23 ... Lamp cover, 24 ... Light bulb, 25 ... Horizontal gap, 26 ... Curved straightening plate , 27 ... Oil pocket with straightening vane, 28 ... Drain,
29 ... Chamber box, 30 ... Propeller type ventilation fan,
31 ... Shatterproof shutter, 32 ... Square duct.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshinori Ogiwara             1-1 1-1 Higashitaga-cho, Hitachi-shi, Ibaraki             Inside Titaga Technology Co., Ltd. F term (reference) 3L058 BH10 BK04

Claims (14)

[Claims] 1. A range hood fan comprising a hood section and a blower for enhancing exhaust gas collection efficiency, wherein a plurality of rectifying plates having different installation angles are installed in the hood. 2. The shape of the side surface of the hood portion according to claim 1, which is 700 mm below the ceiling surface when installed in a kitchen.
The range hood fan, characterized in that it passes in the vicinity of the line where the surface and the surface 365 mm in front of the back wall face each other. 3. The range hood fan according to claim 1, wherein a plurality of straightening vanes are installed so as to overlap each other. 4. The range hood fan according to claim 3, wherein each of the straightening vanes is installed so as to overlap with an upper side of the straightening vane installed at a lower portion thereof. 5. The rectifying plate according to claim 4, wherein each rectifying plate is formed by a box body having an upper opening, and a drain is provided at a lowermost portion of the box body to finally collect water and oil collected by each rectifying plate. A range hood fan characterized by having a structure that guides and collects it to the bottom rectifying plate. 6. The range hood fan according to claim 5, wherein the lowermost straightening vane is provided with a drain so that oil and water dropped from the drain are collected in a detachable pocket from the hood portion. 7. The range hood fan according to claim 6, wherein the lowermost rectifying plate and an oil water collecting portion for collecting oil and condensed water are integrally formed and detachable from the hood portion. 8. The range hood fan according to claim 6 or 7, wherein a pocket portion which is detachable from the hood portion and collects oil and condensed water is formed of a transparent material. 9. The gap distance between the uppermost first straightening vane and the under cover according to any one of claims 1 to 8,
A range hood fan, characterized in that the gap distance between the straightening vanes and the second straightening vanes, and the gap distance between the second straightening vanes and the lowermost third straightening vanes are different from each other. 10. The method according to claim 1, wherein
A range hood fan characterized in that the straightening vanes are formed in a trapezoidal shape, and the gap distance between the side faces of the straightening vanes and the side faces of the hood are changed in the front-rear direction. 11. A range hood fan according to any one of claims 1 to 10, wherein one or more of the current plate is curved. 12. A range hood fan according to claim 1, wherein a chamber box is provided on an upper portion of the hood portion, and a propeller-type ventilation fan is installed in the chamber box. 13. The range hood according to any one of claims 1 to 11, wherein a propeller-type ventilation fan and a chamber box are provided on an upper portion of the hood, and the chamber box is provided with a ventilation port communicating with the outside. fan. 14. A rectifying plate for enhancing exhaust gas collection efficiency is installed in the hood, a propeller-type ventilation fan and a chamber box are provided in the upper part of the hood, and the chamber box is provided with a ventilation port communicating with the outside. Range hood fan.