WO2006001065A1

WO2006001065A1 - Range hood forming air curtain by indoor air

Info

Publication number: WO2006001065A1
Application number: PCT/JP2004/009153
Authority: WO
Inventors: Yoshihiro Yamada
Original assignee: Yamazen Co., Ltd.
Priority date: 2004-06-29
Filing date: 2004-06-29
Publication date: 2006-01-05
Also published as: TW200600728A

Abstract

A range hood capable of sufficiently developing an air curtain function for cutting off exhaust gas and indoor air so that they are not mixed with each other. A second fan (20) is disposed at the front inner portion of a hood body (30) and an inlet for introducing the indoor air (70) into the hood body (30) is formed in the hood body (30) positioned above the second fan (20). An air supply nozzle (40) extending from the second fan (20) to the front lower face of the hood body (30) is formed at the front inner portion of the hood body (30) so as to face a diagonally lower indoor side. Thus, the range hood (100) capable of sufficiently developing the air curtain function for cutting off the exhaust gas and the indoor air so that they are not mixed with each other can be provided by tilting the direction of the air jetted from the outlet of the air supply nozzle (40) to the outside relative to the flow of the exhaust gas (50) rising from a cooking appliance (210) and pans (220).

Description

Specification

Range hood that forms an air curtain with indoor air

Technical field

TECHNICAL FIELD [0001] The present invention relates to a range hood installed in a kitchen, and more particularly to a range hood that forms an air curtain that wraps an exhaust gas containing oil smoke and water vapor rising from a cooking appliance or a pan.

Background art

[0002] A range hood is an exhaust gas containing oil smoke and water vapor that rises from a cooking appliance or a pan, and is exhausted to the outside through an exhaust duct while being sucked by a fan. Has been proposed.

[0003] By the way, the exhaust gas containing oily smoke and water vapor rising from cooking appliances and pans is a force that rises due to its heat. If there is no restriction at that time, the exhaust gas spreads indoors as it rises. . If the exhaust gas spreads as it rises and the exhaust gas is not captured well above it, the exhaust gas cannot be exhausted to the outside.

[0004] For this reason, in the conventional range hood, it has been considered that the exhaust gas is sucked together with the air inside the room by increasing the capacity of the fan, and the applicant responds to the request. Has been developing fans. However, a fan capable of sucking in a large amount of exhaust gas and air, however, can be effective. It may be necessary to increase the size of the hood itself, or the sound from the fan may increase.

[0005] Therefore, various studies have been made on how to effectively suck and discharge exhaust gas while miniaturizing the fan and the hood main body. It was to wrap the exhaust gas with an air curtain. It was thought that if the exhaust gas was wrapped in an air curtain, the exhaust gas would not spread widely, so that its collection and suction would be more effective.

[0006] As described in Patent Document 1, Patent Document 2, or Patent Document 3, it is conceivable that the air curtain is constituted by a part of the sucked exhaust gas.

Patent Document 1: JP-A-53-5846, Patent Document 2: Japanese Patent Laid-Open No. 1-306753

Patent Document 3: Japanese Patent Laid-Open No. 9-280621

Disclosure of the invention

Problems to be solved by the invention

[0007] As shown in Fig. 6, the "ventilator" disclosed in Patent Document 1 is a "ventilated gas or polluted air against the generation of uncomfortable gas such as indoor or outdoor. In the case of having an exhaust device so that it does not diffuse in the direction, the air curtain is generated toward the exhaust direction of the exhaust device and the entire area around the generation source or a partial force toward the exhaust source. An air curtain was created. "

[0008] However, the "ventilator" of this Patent Document 1 includes "a whole area around the generation source or a partial force, an air curtain directed toward the exhaust direction of the exhaust apparatus" and "a source from the exhaust apparatus. Since the two types of air curtains must be constructed, the structure is very complicated, and a large amount of work is required to install them in the kitchen. Is not realistic.

[0009] Further, the "flow-in device" described in Patent Document 2 is based on the description in the claims of the document, "the flow suction port and the fan that sends the flow from the suction port to the blow-out port. A ring-shaped first air outlet that is arranged around the air inlet and blows out the flow from the fan, and a second air outlet provided outside the first air outlet. 1 blower locus A part of the annular flow that is blown out is configured to be sucked into the suction port while encircling the surrounding flow. This “flow-in device” in Patent Document 2 is premised on the “annular flow blown out from the first annular blowout port”. However, if such an annular flow is formed, a considerably large fan There is doubt that the exhaust gas that rises just by having to be installed is well wrapped by this annular flow. This is because the exhaust gas is sucked by the fan.

[0010] Then, the "range hood fan" described in Patent Document 3 is "to form a good air curtain without being greatly affected by fluctuations in the air flow load" As shown in Fig. 7. “Inside the main body box 22, there are a lower fan chamber 27 and an upper fan chamber 31. The lower fan chamber 27 has a suction port 28 at the center of the lower portion and a blowout port 29 at the periphery. The suction port 32 is formed at the lower part of the upper fan chamber 31, and the discharge port 33 is formed at the upper part.The upper blade part 36 of the blade body 34 is disposed in the upper fan chamber 31, The lower blade portion 38 is disposed in the lower fan chamber 27. The blade body 34 has a configuration in which it is rotationally driven by a motor 39.

[0011] However, the "range hood" in Patent Document 3 also has a "blowing port 29" formed so as to surround the "suction port 28" opened at the center of the lower surface of the "range hood". As in the case of Document 2, the air curtain blown out from the “outlet 29” has an annular shape, and completely encloses the exhaust gas sucked in and taken in from the “inlet 28, inlet 28”. It cannot be considered. The reason why the air curtain is not effective is as follows.

[0012] First, considering the blowing position of the annular air curtain and the generation position of the exhaust gas, the blowing position of the air curtain is the lower surface of the range hood usually installed near the ceiling, The gas generation position is below the range hood in the gas range and the pan above it. In general, the distance between the gas range and the range hood is about 60 cm to 80 cm, and the air curtain blowing position is completely separated from the exhaust gas generation position.

[0013] The fact that the two positions are separated from each other means that the exhaust gas that has reached the blowout position of the air curtain has already been greatly disturbed. On the other hand, the air curtain cannot reach the exhaust gas generation position, or even if it reaches, it is greatly disturbed, that is, it is in a state where it cannot enclose the exhaust gas. . Of course, in the middle part between the air curtain blowing position and the exhaust gas generation position, both of them are in a confused state, and not only the air curtain function can be fully demonstrated, but only the exhaust gas can be discharged. Therefore, it is considered to be a very inefficient range hood.

Furthermore, the range hood described in Patent Document 1 and Patent Document 3 uses an exhaust gas to form an air curtain. Therefore, if the air curtain is disturbed, the exhaust gas It will diffuse to the indoor side, and the serious problem of indoor air pollution It will also have a title.

[0015] In view of this, the present inventors have conducted various studies on the power to be able to form an air curtain that does not disturb the exhaust gas in this type of range hood. The invention has been completed.

[0016] That is, an object of the present invention is to sufficiently prevent the exhaust gas from being mixed into the room air and sufficiently exhibit the air curtain function of completely blocking the exhaust gas and the room air. It is to provide a range hood that can be operated with a simple structure. Means for solving the problem

[0017] In order to solve the above-described problems, first, the means adopted by the invention according to claim 1 will be described with reference numerals used in the description of the best mode described below.

`` Exhaust gas 50 containing smoke and water vapor generated from cooking appliance 210 and pan 220 is captured by the hood main body 30, and this exhaust gas 50 is sucked out by the first fan 10 in the hood main body 30 and taken outside from the exhaust duct 11. The range hood 100 is configured to discharge, and the second fan 20 is disposed in the front portion 30a of the hood main body 30, and the indoor air 70 is placed on the hood main body 30 positioned above the second fan 20. In addition to forming the introduction port 31 for introducing air, the directional force supply air nozzle 40 is formed in the front portion 30a of the hood body 30 from the second fan 20 to the front lower surface of the hood body 30.

In addition, by tilting the air supply nozzle 40 downward toward the indoor side, the direction of the air injected from the air outlet 41 of the air supply nozzle 40 changes the direction of the exhaust gas 50 rising from the cooking appliance 210 or the pan 220. In contrast, the range hood 100 is characterized by tilting outward.

It is.

That is, as shown in FIGS. 1 and 2, the range hood 100 according to claim 1 of the present invention uses exhaust gas 50 containing smoke and water vapor generated from the cooking appliance 210 and the pan 220 as shown in FIGS. The exhaust gas 50 is captured by 30 and is exhausted to the outside from the exhaust duct 11 while being sucked by the first fan 10 in the hood main body 30.

[0019] In the range hood 100, the second fan 20 is disposed in the front portion 30a of the hood main body 30, and the indoor air 70 is guided to the hood main body 30 positioned above the second fan 20. The inlet 31 is formed, and the air supply nose 40 is formed in the front portion 30a of the hood body 30 so as to be directed from the second fan 20 to the lower surface of the front portion of the hood body 30.

[0020] Therefore, when the second fan 20 is driven, the indoor air 70 above the hood body 30 is sucked into the front portion 30a from the inlet 31 formed on the upper surface side of the front portion 30a. The sucked room air 70 is sent out to the supply nozzle 40 side by the second fan 20. That is, the exhaust gas 50 is not mixed in the air curtain 60 formed in the range hood 100 according to the present invention.

Furthermore, in this range hood 100, as shown in FIG. 2 and FIG. 3, the supply air nozzle 40 is inclined downward toward the indoor side, so that the air outlet 41 of the air supply nozzle 40 can be The direction of the air jetted out from the cooking apparatus 210 and the pan 220 is inclined outward with respect to the exhaust gas 50 flow rising from the pan 220.

[0022] For this reason, in this range hood 100, the direction of the air injected from the outlet 41 of the supply air nozzle 40 is positively inclined outward (center side of the room) with respect to the exhaust gas 50 flow. It is. As a result, the air curtain 60 formed by the air jetted from the air outlet 41 of the air supply nozzle 40 has reached the vicinity of the air outlet 41 of the air supply nozzle 40 as shown by the arrows in FIGS. Even if there is a turbulence in the exhaust gas 50 flow, the exhaust gas 50 flow is completely enclosed from the indoor side.

In other words, the air curtain 60 formed by the range hood 100 of the present invention completely blocks the flow of the exhaust gas 50 from the indoor air 70, and the indoor air is contaminated by the exhaust gas 50. It is trying not to happen. Of course, even if the air curtain 60 itself is disturbed and flows into the room, the exhaust gas 50 is not mixed in the gas constituting the air curtain 60 as described above. Unlike the range hood proposed in Patent Document 3, the indoor air 70 is not polluted by the exhaust gas 50.

[0024] As shown in Fig. 1, this type of range hood 100 is installed near the indoor wall 230 and close to the ceiling. Therefore, it is almost unnecessary to install the air supply nozzle 40 on the wall 230 side. In other words, the air supply nose 40 is installed in the front portion 30a of the hood body 30 constituting the range hood 100. It is enough to open it.

Therefore, in the range hood 100 according to claim 1 of the present invention, the range hood 100 has the air supply nozzle 40 provided in the front portion 30a of the hood main body 30 connected to the lower surface of the front portion of the hood main body 30 from the second fan 20. The air supply nozzle 40 is inclined downward toward the indoor side, so that the exhaust gas rising from the air curtain 60 blown from the air outlet 41 of the air supply nozzle 40 is exhausted. The diffusion of the gas 50 into the indoor side can be prevented, and the exhaust gas 50 can be reliably discharged. In other words, the range hood 100 of claim 1 can prevent the exhaust gas 50 from entering the indoor air 70 and can completely block the exhaust gas 50 and the indoor air 70. is there.

[0026] Further, in order to solve the above-mentioned problem, the means taken by the invention according to claim 2 is the range hood 100 according to claim 1 above.

“The vertical cross-sectional shape of the air supply nozzle 40 has been made smaller in order from the second fan 20 to the air outlet 41.”

It is.

That is, in the range hood 100 according to claim 2 of the present invention, as shown in FIG. 3, the longitudinal sectional shape of the air supply nozzle 40 is arranged in order from the second fan 20 to the outlet 41. In this configuration, the flow velocity of the air blown out from the blowout port 41 is increased, and the air curtain 60 is jetted by concentrating the front end partial force of the front portion 30a.

In other words, in this range hood 100, since the outlet 41 force S of the air supply nozzle 40 is reduced, the air supply nose 40 that can only form the air curtain 60 that reaches far away is installed in the second hood 100. Combined with the fan 20 facing the front lower surface of the hood body 30 and tilting downward toward the indoor side, the air curtain 60 As a result, the room air 70 is completely cut off.

[0029] Therefore, the range hood 100 according to the second claim of the claim naturally exhibits the same function as that of the first claim, and the function of the air curtain 60 is further enhanced. It is. [0030] Further, in order to solve the above-mentioned problem, the means adopted by the invention according to claim 3 is the range hood 100 according to claim 1 or claim 2 described above. ,

“A plurality of rectifying plates 42 are arranged in the air supply nozzle 40, and the angle of each rectifying plate 42 is gradually expanded so as to increase as it is positioned at the left and right ends of the front portion of the feed body 30.

[0031] That is, in the range hood 100 according to claim 3 of the present invention, as specifically shown in FIGS. 4 and 5, a current plate 42 is interposed in each air supply nozzle 40, The air blown out from the blowout port 41 by these rectifying plates 42 is directed to the lower front side of the front portion 30a, and at the same time is distributed to the left and right.

[0032] Therefore, in the range hood 100 according to claim 3 of the claims, the air curtain 60 blown out from the outlet 41 of the air supply nozzle 40 is reliably left and right at the front end of the front portion 30a of the hood body 30. As a result, the indoor air 70 and the exhaust gas 50 are reliably shut off.

The invention's effect

[0033] As detailed above, in the present invention,

“The second fan 20 is arranged in the front portion 30a of the hood main body 30, and the inlet 31 for introducing the indoor air 70 is formed in the hood main body 30 positioned above the second fan 20, and the hood In the front 咅 B portion 30a of the main body 30, a second fan 20 forces, a counter force supply nozzle 40 is formed on the lower surface of the front 咅 B of the hood main body 30,

In addition, by tilting the air supply nozzle 40 downward toward the indoor side, the direction of the air injected from the air outlet 41 of the air supply nozzle 40 changes the direction of the exhaust gas 50 rising from the cooking appliance 210 or the pan 220. Against the outside. "

The main feature of the structure is that the exhaust gas 50 can be prevented from entering the indoor air 70, and the exhaust curtain 50 and the indoor air 70 are completely shut off. Thus, the range hood 100 capable of fully exhibiting the above can be provided with a simple structure.

Therefore, when the range hood 100 completely shuts off the exhaust gas 50 and the indoor air 70, The air curtain function can be fully exerted, and the walls and various facilities in the kitchen are not polluted by the oily smoke in the exhaust gas, and can be used very advantageously in the industry.

Brief Description of Drawings

1] It is a partial longitudinal sectional view showing the state of the kitchen in which the range hood according to the present invention is installed. 2] A partial longitudinal sectional view showing the range hood shown in FIG. 1 in an enlarged manner.

FIG. 3 is an enlarged vertical cross-sectional view of a portion of the same range hood centered on a second fan and an air supply nozzle connected to the second fan.

4] It is a front view showing a state cut just before the second fan of the same range hood.

5] It is a bottom view showing a state in which the range hood is cut just before the second fan.

6] It is a longitudinal sectional view showing a conventional technique.

7] A partial longitudinal sectional view showing another conventional technique.

Explanation of symbols

100 range hood

10 First fan

11 Exhaust duct

12 Fan tube

20 Second fan

21 Air filter

30 Hood body

30a front part

31 Introduction

31a Upper filter

32 Bulkhead

33 Oino Lefinore

34 decorative cylinder

40 Itogo 5¾ Noznore

41 Outlet 42 Rectifier plate

43 Heater

50 exhaust gas

60 Air curtain

70 Indoor air

210 Cooking equipment

220 Nabe

230

R capture space

BEST MODE FOR CARRYING OUT THE INVENTION

Next, the invention according to each claim configured as described above will be described with respect to the range hood 100 which is the best mode shown in the drawings. FIG. 1 shows the range hood 100 according to the present invention. The state where it is installed in the kitchen is shown, and this range hood 100 is installed in front of the wall 230 and directly under the ceiling. Under the range hood 100, cooking devices 210 such as various ranges and ovens are installed, and the cooking device 210 is heated and cooked with the pan 220 and the like.

[0037] If cooking is performed by the cooking device 210 and the pan 220, exhaust gas 50 containing oily smoke and water vapor is generated from the cooking device 210 and the pan 220, and the range hood 100 captures this and discharges it to the outdoors. . For this purpose, the range hood 100 discharges the exhaust gas 50 sucked out by the hood body 30 that captures the exhaust gas 50, the first fan 10 provided in the hood body 30, and the first fan 10 to the outside. The exhaust duct 11 is provided.

[0038] The range hood 100 according to the best mode has a fan cylinder 12 for supporting the first fan 10, and a hood main body 30 is provided on the lower end of the fan cylinder 12 in a body-like manner. . A connecting portion for the exhaust duct 11 is formed at the upper end of the fan cylinder 12, and the tip of the exhaust duct 11 is led out to the outdoors through a space such as the back of the ceiling.

[0039] The hood main body 30 has an area that can capture the exhaust gas 50 rising from the cooking appliance 210 and the pan 220, and is positioned directly below the first fan 10. Oil to capture and liquefy the oil in the captured exhaust gas 50 in the part The filter 33 is arranged, and the oil filter 33 is attached to a partition wall 32 installed in the hood body 30. In the hood main body 30 of the best mode, as shown in FIG. 2, the partition wall 32 and the lower part of the oil filter 33 attached to the partition wall 32 are used as a trapping space R for the exhaust gas 50.

[0040] Further, in the hood main body 30 of the best mode, it is sufficient that the above-described oil filter 33 and the second fan 20 described later can be accommodated. Therefore, as shown in FIG. 1 and FIG. The thickness in the vertical direction is not so large. This is because the storage space for the first fan 10 is sufficiently secured in the decorative cylinder 34 that wraps the fan cylinder 12 from the outside.

[0041] Furthermore, in the hood main body 30 of the best mode, the indoor side portion is the front portion 30a, and as shown in Fig. 2, the second fan 20 is disposed in the front portion 30a. . As shown in FIG. 3, the hood body 30 above the second fan 20 has an introduction port 31, and the suction of the indoor air 70 by the second fan 20 is made through the introduction port 31. I can do it. An upper filter 31a is accommodated in the introduction port 31, and the upper filter 31a removes dust or the like that adversely affects the operation of the second fan 20 from the sucked indoor air 70. It is.

[0042] As shown in FIG. 1 and FIG. 3, the blower side of the second fan 20 housed in the front portion 30a of the hood main body 30 is connected to the lower surface of the front portion of the hood main body 30 from the second fan 20. Directional force air supply Nozzle 40 is provided. The air supply nozzle 40 in the best mode is divided into a large number using a rectifying plate 42 to be described later, and a blowout port 41 which is a tip of the air supply nozzle 40 opens at the lower surface of the front portion 30a.

Further, as shown in FIG. 3, the air supply nozzle 40 is inclined downward toward the indoor side, and the air injected from the air outlet 41 of the air supply nozzle 40 Directional force As shown by the arrows in FIGS. 1 and 2, the exhaust gas 50 rising from the cooking appliance 210 or the pan 220 is inclined outward. In the present best mode, the inclination angle of the air supply nozzle 40 is 120 ° measured clockwise from the lower surface when the direction toward the indoor side of the lower surface of the front portion 30a is defined as 0 °.

[0044] With respect to this air supply nozzle 40, the longitudinal sectional shape thereof is as shown in FIG. In addition, the second fan 20 is gradually reduced from the outlet 41 to the outlet 41. As a result, the air supply nozzle 40 is configured such that the lateral width of the outlet 41 is larger than the lateral width of the outlet of the second fan 20 as shown in FIG. Further, in this air supply nozzle 40, since the outlet 41 side is made smaller than the second fan 20 side, the flow velocity of the air injected from the outlet 41 is controlled by the second fan 20. It is faster than the flow rate of the air sent out.

[0045] Further, in the range hood 100 of the best mode, as shown in Figs. 4 and 5, a plurality of rectifying plates 42 are arranged in the supply nozzle 40, and the angle of each rectifying plate 42 is set to the hood. It is assumed that it is gradually expanded so as to increase as it is located at the left and right ends of the front part of the main body

[0046] Each rectifying plate 42 serves to expand the air sent out from the second fan 20 in the lateral direction of the front end of the front portion 30a when blown out from the outlet 41 of each air supply nozzle 40. Is. That is, each rectifying plate 42 is coupled with the fact that each air supply nozzle 40 is inclined downward toward the indoor side, and the direction of the air injected from the air outlet 41 of this air supply nozzle 40 is changed to the cooking appliance 210. In addition, the exhaust gas 50 rising from the pan 220 is inclined outward (inside the room) and spreads laterally (in a direction parallel to the wall 230).

[0047] In the range hood 100 according to the best mode, as shown in FIG. 3, the heater 43 is arranged in the supply air nozzle 40. The heater 43 heats the air sent from the second fan 20 and makes the air curtain 60 warm. In addition, the heater 43 prevents the inside of the supply air nozzle 40 from being cooled by the indoor air 70, thereby preventing condensation in the supply air nozzle 40 and in the vicinity thereof. It is. When the air supply nozzle 40 and its vicinity are cooled, condensation may occur due to water vapor contained in the exhaust gas 50, and this condensation may cause a short circuit in the electric parts of the range hood 100. This is because an adverse effect is generated. Industrial applicability

[0048] The range hood 100 according to the present invention forms an air supply nose 40 in the front portion 30a of the hood main body 30 that is directed toward the front lower surface of the hood main body 30 from the second fan 20. Noznore 40 The direction of the air injected from the air outlet 41 is inclined outward with respect to the flow of exhaust gas 50 rising from the cooking appliance 210 or the pan 220.

Therefore, the range hood 100 can prevent the exhaust gas 50 from being mixed into the indoor air 70. If the exhaust gas 50 and the indoor air 70 are completely shut off, the range hood 100 can fully perform the air curtain function. As a result, the walls and various facilities in the kitchen will not be polluted by oil smoke in the exhaust gas. For this reason, the range hood 100 according to the present invention can sufficiently meet the demands of consumers as compared with the conventional type, and the production and sales are promoted, which is very advantageous industrially. It can be used.

Claims

The scope of the claims

[1] The exhaust gas 50 containing oil smoke and water vapor generated from the cooking appliance 210 and the pan 220 is captured by the hood main body 30, and the exhaust duct 50 is sucked by the first fan 10 in the hood main body 30 while being sucked. 11 is a range hood 100 that is discharged to the outside, and the second fan 20 is disposed in the front portion 30a of the hood main body 30, and the hood main body 30 positioned above the second fan 20 is In addition to forming an inlet 31 for introducing indoor air 70, an air supply nozzle 40 is formed in the front portion 30a of the hood body 30 from the second fan 20 toward the front lower surface of the hood body 30. ,

In addition, by tilting the air supply nozzle 40 downward toward the indoor side, the direction of the air injected from the air outlet 41 of the air supply nozzle 40 changes the direction of the exhaust gas 50 rising from the cooking appliance 210 or the pan 220. In contrast, the range hood 100 is characterized by being inclined outward.

[2] The range hood 100 according to claim 1, wherein the cross-sectional shape of the air supply nozzle 40 is made smaller in order from the second fan 20 to the air outlet 41.

[3] It is characterized in that a plurality of rectifying plates 42 are arranged in the air supply nozzle 40, and the angle of each rectifying plate 42 is sequentially expanded so as to increase as it is positioned at the left and right ends of the front portion of the hood body 30. A range hood 100 according to claim 1 or claim 2.