CN107940531B

CN107940531B - Mute range hood

Info

Publication number: CN107940531B
Application number: CN201711492582.XA
Authority: CN
Inventors: 王淼弘
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-30
Filing date: 2017-12-30
Publication date: 2024-05-07
Anticipated expiration: 2037-12-30
Also published as: CN107940531A

Abstract

The invention belongs to the technical field of household kitchen range hoods, and particularly relates to a mute range hood. The mute smoke exhaust ventilator comprises a fan, a muffler and a smoke exhaust ventilator; the muffler is arranged between the fan and the fume suction hood, the inlet end of the fume suction cavity of the muffler is communicated with the fume suction hood, and the outlet end of the fume suction cavity is communicated with the inlet end of the fan. According to the invention, the fan is arranged in the silencing box, so that noise generated during the operation of the fan can be eliminated, the noise generated by the fan is not transmitted out through the air inlet, the oil smoke suction cavity and the fume suction cover, and a good silencing effect is achieved.

Description

Mute range hood

Technical Field

The invention belongs to the technical field of household kitchen range hoods, and particularly relates to a mute range hood.

Background

The low noise fume exhaust fan composed of the prior art adopts a fan and fume exhaust cover to be arranged separately and is provided with a muffler to be installed outdoors. However, the huge muffler and fan are installed outside the building, and the three-city pipe is not allowed, so that the four manufacturers are inconvenient to manufacture the split-type kitchen ventilator. It is obviously impractical to install fans and mufflers outdoors. It is more difficult if the muffler and the fan are installed in the ceiling of the building room. As is well known, the suspended ceiling of most buildings is generally about 200 to 250 mm, the keels are removed, and the clean space of the suspended ceiling is very limited. Therefore, it is still not preferable to install the muffler and the fan in the ceiling of the building.

At present, the fans of the cooking fume exhauster manufactured by the prior art at home and abroad are arranged in the fan box above the cooking fume exhauster, and then covered by the decorative plate to increase the beautiful appearance. The noise source of the range hood is mainly a fan, and the fan and the fume exhaust hood are integrally assembled, and the noise of the fan is nearer to the fume exhaust port and directly transmitted out through the fume exhaust hood. Therefore, the range hood manufactured by the world prior art has almost no difference in noise, and the sound power level is about 70dB (A), and the sound pressure level is about 55 dB. People cook in the noise environment with the level for a long time, so that physical and mental health is seriously affected, and particularly, diseases are aggravated for middle-aged and elderly people. Creating a mute kitchen living environment is a common good wish in the world today.

Therefore, the silent range hood can solve the problem of large noise of the existing range hood.

Disclosure of Invention

First, the technical problem to be solved

Aiming at the existing technical problems, the invention provides a mute range hood, which can solve the problem of high noise of the existing range hood.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:

A mute range hood is provided, which comprises a fan, a muffler and a range hood;

the muffler is arranged between the fan and the fume suction hood, the inlet end of the fume suction cavity of the muffler is communicated with the fume suction hood, and the outlet end of the fume suction cavity is communicated with the inlet end of the fan.

As a preferable scheme of the mute range hood, the fan is configured at the upper part of the muffler, and the range hood is arranged at the lower part of the muffler;

The novel oil smoke exhaust ventilator further comprises a fan sound-eliminating box, an inner muffler is arranged in the sound-eliminating box, the fan is arranged in the inner muffler, and an air inlet of the fan sound-eliminating box is communicated with an outlet end of the oil smoke suction cavity.

As a preferable scheme of the mute range hood, the fan silencing box and the silencer outer shell are provided with silencing structures.

As a preferable scheme of the mute smoke exhaust ventilator, the fan sound-eliminating box is independently configured, an inner muffler is configured in the fan sound-eliminating box, and the fan is arranged in the inner muffler;

The air inlet of the fan silencing box is connected with the oil smoke outlet pipe of the oil smoke suction cavity of the silencer through the silencing air pipe.

As a preferred scheme of the mute smoke exhaust ventilator, an air outlet silencer is arranged between an air outlet of the fan and an air outlet of the fan silencing box, an inlet end of the air outlet silencer is communicated with an outlet end of the fan, and an outlet end of the air outlet silencer is communicated with the air outlet.

As a preferable scheme of the mute smoke exhaust ventilator, the air pipe arranged between the air outlet of the fan sound-absorbing box and the concentrated smoke exhaust air duct of the building is a mute air pipe, and the air pipe arranged between the air inlet of the fan sound-absorbing box and the oil smoke outlet pipe of the muffler is a mute air pipe.

As a preferred scheme of the mute smoke exhaust ventilator, a second muffler is also arranged, an air pipe interface of the second muffler is connected with an air inlet of a fan muffler box through a silencing air pipe, the air pipe interface of the second muffler is connected with a smoke exhaust pipe of the muffler through an air pipe, and an air outlet of the fan muffler box is connected with a building concentrated smoke exhaust air flue through the silencing air pipe.

As a preferred scheme of the mute smoke exhaust ventilator, the mute air pipe comprises an inner air pipe and an outer air pipe which are sleeved with each other, the inner air pipe is a soft air pipe with a mesh, the outer air pipe is a closed soft air pipe, and a mute layer is arranged between the soft air pipe with the mesh and the closed soft air pipe.

As a preferable scheme of the mute cooking fume exhauster, the muffler is a micropore plate muffler or a micro-slit plate muffler or a micropore plate resistance type compound muffler or a resistance muffler or an impedance compound muffler or an expansion cavity resistance type muffler, and the surface of the micropore plate is provided with an oil-sticking-free coating or a physical oil-sticking-free structure.

As a preferred scheme of the mute range hood, the mute range hood comprises a range hood cover, and when the range hood is one, the range hood cover is an upper range hood cover or a side range hood cover;

the two fume hoods are respectively an upper fume hood and a side fume hood.

(III) beneficial effects

The beneficial effects of the invention are as follows: the mute smoke exhaust ventilator provided by the invention has the following advantages:

1. The structure of the prior art range hood is innovated, and the mute operation is realized on the basis of not changing the integral structure of the prior range hood;

2. the invention of the mute smoke exhaust ventilator is successful, and the mute smoke exhaust ventilator brings mute healthy kitchen life for human beings, and particularly brings good news for middle-aged and elderly kitchen life;

3. laying a foundation for constructing a silent life of a kitchen.

Drawings

Fig. 1 is a schematic structural diagram of an integrated mute range hood according to a first embodiment;

fig. 2 is a schematic diagram of a fan sound-reducing box of an integrated silent range hood according to the first embodiment;

fig. 3 is a schematic structural diagram of a two-piece silent range hood according to the second embodiment;

Fig. 4 is a schematic structural diagram of a three-piece-type silent range hood according to the third embodiment;

Fig. 5 is a schematic structural diagram of an expansion cavity type silent range hood according to a fourth embodiment;

Fig. 6 is a schematic diagram of a specific structure of a silencing air duct according to the present embodiment.

In the figure:

1: fan, 2: fan sound-reducing box, 3: muffler, 4: fume hood, 5: inner muffler, 6: second muffler, 7: silencing structure, 8: air-out muffler, 9: lampblack suction cavity, 10: silencing air pipe, 11: concentrated smoke exhaust duct of building, 12: sound-reducing box air outlet, 13: inner air duct, 14: outer tuber pipe, 15: expansion chamber resistant muffler, 16: superfine glass wool, 17: protective layer, 18: fume outlet pipe, 19: air intake, 20: air duct, 21: air duct interface, 22: and an air pipe joint.

Detailed Description

The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.

Embodiment one

As shown in fig. 1 and 2, in the present embodiment, there is provided a silent kitchen range hood, which includes a fan 1, a fan muffler box 2, a muffler 3 and a range hood 4 integrally configured, the fan 1 is disposed in the fan muffler box 2, the fan muffler box 2 is horizontally configured on the upper portion of the muffler 3, the range hood 4 is disposed on the lower portion of the muffler 3, and the center of the muffler 3 is a range hood suction cavity 9. The fan silencing box 2 and the silencer 3 are provided with silencing structures 7. In the present embodiment, the fan 1 is described as an example of a centrifugal fan or an axial flow fan.

When the device is operated, the impeller of the fan 1 horizontally operates in the fan sound-reducing box 2, the fan sound-reducing box 2 forms negative pressure, oil smoke is sucked into the fan sound-reducing box 2 through the oil smoke suction cavity 9 in the muffler 3 through the oil smoke exhaust pipe 18 by the oil smoke suction hood 4, is forcedly discharged into the building concentrated smoke exhaust air duct 11 through the sound-reducing pipe 10 by the air outlet 12 of the fan sound-reducing box 2 through the fan 1, is discharged out of the building through the building concentrated smoke exhaust air duct 11, and completes the oil smoke suction and exhaust operation.

Noise generated by the horizontal operation of the fan 1 in the fan sound-reducing box 2 is firstly reduced by the fan sound-reducing box 2, and then the noise of the air exhaust of the fan 1 through the air outlet 12 is reduced by the noise reducing air pipe 10 and enters the building concentrated smoke exhaust air duct 11, so that the air exhaust noise is greatly reduced. The noise of the fan 1 is transmitted out through the air inlet 19 of the fan silencing box 2 and then is silenced by the silencer 3. Therefore, the noise generated by the fan 1 is not transmitted out through the air inlet 19, the oil smoke suction cavity 9 and the oil smoke absorbing cover 4, and the purpose of silence is achieved.

As shown in fig. 1, the muffler 3 is a micro-porous plate type muffler having an excellent sound deadening effect, so that the air volume and the air pressure of the blower can be appropriately increased to improve the smoke sucking and discharging performance of the range hood. The surface of the oil fume suction cavity 9 formed by the micropore plates is provided with an oil-proof coating, and oil resistance measures of the oil-proof coating are adopted, so that the oil fume is not easy to adhere to the micropore plates. When the micropores of the microporous plate are blocked by oil fume, the conventional oil-fat separation net is opened and detached, so that oil and dirt adhered on the microporous plate can be wiped off, and the oil-free coating is very convenient to clean, so that the oil fume suction cavity 9 can be of a physical oil-free structure.

In fig. 2, the fan noise-reducing box 2 adopts an internal and external noise-reducing measure to enhance the noise-reducing effect. The inner muffler 5 of the fan muffler box 2 adopts a single-layer micropore plate type muffler, and the micropore plate adopts a non-sticking oil coating structure, and a steam cleaning device can be arranged on the surface of the micropore plate and the fan to remove greasy dirt periodically. The outer shell surface of the fan sound-deadening box 2 adopts a sound-deadening structure 7 to deaden noise, the sound-deadening structure 7 of the embodiment comprises superfine glass wool 16 of an inner layer and a protective layer 17 laid on the outer side of the superfine glass wool 16, and the protective layer can be an aluminum foil protective layer. An air outlet of the fan silencing box 2 is provided with an air outlet silencer 8, so that noise generated by air exhaust of the fan is effectively eliminated. The oil is basically thrown into the fan housing due to the centrifugal separation of the fan exhaust air by the impeller. Therefore, the exhaust air does not have greasy dirt, so the air-out silencer 8 can be any silencer, and the embodiment of the invention adopts a micropore plate type silencer. The air duct from the sound-deadening box air outlet 12 to the building concentrated smoke exhaust air duct 11 is still a soft air duct for installation convenience, but the soft sound-deadening air duct 10 is necessary because the fan exhaust noise is strong. Referring to fig. 6, the embodiment of the present invention provides a structure of a soft noise reduction air duct 10, which includes an inner air duct 13 and an outer air duct 14, wherein the inner air duct 13 of the soft noise reduction air duct 10 adopts a soft air duct with Kong Lvbo, and the outer air duct 14 adopts a sealed aluminum foil soft air duct. A silencing layer is arranged between the soft air pipe with Kong Lvbo and the airtight aluminum foil soft air pipe, and the silencing layer is composed of superfine glass wool 16 filled between the inner air pipe 13 and the outer air pipe 14.

The fan muffler box 2 may be vertically disposed on the upper portion, the back surface or the side surface of the muffler 3, but this arrangement may increase the height, depth and volume of the range hood, which may cause the disadvantage of increasing the overall volume of the range hood, and affect the beauty.

In the embodiment of fig. 1, the connection mode of the air outlet in the prior art is changed into the connection mode of the side air outlet, so that the connection mode of the traditional soft air pipe in the suspended ceiling is convenient. The product delivery can change the assembly direction of the 180-degree fan 1 according to the position of the concentrated smoke exhaust air duct 11 of the user building, and the air outlet connection pipes are separated in the left and right directions, so that the user can conveniently install the product on site.

It should be noted that: the mute range hood can comprise one range hood 4 or a plurality of range hoods, and when the number of the range hoods 4 is one, the range hood 4 is an upper range hood or a side range hood;

The two fume hoods 4 are included, and the two fume hoods 4 are respectively an upper fume hood and a side fume hood.

The side fume exhaust cover comprises two structural forms, wherein the side fume exhaust cover comprises a side upper fume exhaust cover or a side lower fume exhaust cover, the side upper fume exhaust cover and the upper fume exhaust cover are of an integrated structure, or the side upper fume exhaust cover is arranged on a wall near the upper fume exhaust cover, or the side lower fume exhaust cover is arranged on a wall near a cooking bench.

Second embodiment

Referring to fig. 3, on the basis of the first embodiment, a fan 1 and a fan sound-deadening box 2 are independently provided to enhance the sound-deadening level of the fan sound-deadening box 2. In fig. 1, due to the limitation of the modeling size of the conventional decorative board, the fan noise-reducing box 2 cannot be oversized, so that the noise-reducing effect of the fan noise-reducing box 2 is limited, and in order to further reduce the high-frequency noise and the low-frequency vibration noise generated by the fan 1, the fan noise-reducing box 2 is independently configured, and two packaged products are manufactured from a factory and delivered.

In fig. 3, the volume of the suction box in the box body of the fan silencing box 2 is increased, which is equivalent to an anti-type silencer, so that the noise of the fan 1 is greatly reduced, and the noise is transmitted into the silencer 3 from the suction pipe through the silencing air pipe 10, thereby being beneficial to reducing the overall noise. The air outlet silencer 8 is arranged in the space between the air outlet of the fan 1 and the air outlet of the fan silencing box 2, and grease is highly separated and purified due to the action of centrifugal force of the fan, so that no greasy dirt exists at the air outlet of the fan silencing box 2, the air outlet silencer 8 can be of any type of structure, but a small silencer is preferable in consideration of limited volume, and the embodiment adopts a micropore plate type silencer. Noise generated by the fan 1 is silenced by the fan silencing box 2, noise transmitted by the air inlet 19 is silenced again by the silencing air pipe 10, noise transmitted by the oil smoke outlet pipe 18 is further silenced by the silencer 3, and the noise is not transmitted through the oil smoke suction cavity 9 and the oil smoke absorption cover 4, even is very small, so that the aim of silencing is fulfilled.

The arrangement of the muffler box air outlet 12 and the air inlet 19 of the fan muffler box 2 in the same direction at the upper end is considered that the air pipe 10 is convenient to be arranged in a kitchen ceiling. If the above factors are not considered, the air inlet 19 may be disposed in the opposite direction of the air outlet 12 of the silencing box and led out below the fan 1, and the air inlet and outlet of the silencing box 2 of the fan may be led out horizontally.

In summary, fig. 3 enhances the silencing effect of the fan silencing box 2, and the silencing effect of the silencer 3 is better. A range hood with a greater suction force can be manufactured. The fan silencing box 2 can be assembled in a kitchen hanging cabinet, and air pipes are all arranged in and out of the upper part of the hanging cabinet and in a suspended ceiling.

Embodiment III

Referring to fig. 4, on the basis of the second embodiment, a second muffler 6 is configured, an air duct interface 21 of the second muffler 6 is connected to an air inlet 19 of the fan-noise reduction box 2 through a noise reduction air duct 10, and an air duct interface 22 of the second muffler 6 is connected to the fume exhaust duct 18 through an air duct 20. In fig. 4, the second muffler 6 and the muffler 3 are added to jointly muffler the noise transmitted from the fan muffler box 2, so that the silencing effect is further improved, the ultra-silent range hood is formed, a space is created for producing the ultra-large range hood for improving the wind pressure and the wind quantity of the fan, and three-piece packaged products are manufactured from a factory and delivered from a factory.

The air duct interfaces 21 and 22 of the second muffler 6 are both led out from the upper part, mainly considering that the air duct is convenient to be arranged in the suspended ceiling, otherwise, the air duct interfaces all led out of the air duct interface 22 from the other end of the air duct interface 21, and the configuration of one air duct and the interface 22 can be omitted.

In the third embodiment, a three-piece product is manufactured by a factory and shipped. The fan silencing box 2 and the second silencer 6 are arranged in kitchen hanging cabinets on the left side and the right side of the silencer 3 above the fume suction hood 4, and air pipes enter and exit from the upper part of the hanging cabinet and are arranged in the suspended ceiling, so that kitchen attractiveness is not affected.

Fourth embodiment

Referring to fig. 5, the existing expansion chamber resistant muffler 15 replaces the muffler 3, and has advantages in that the expansion chamber resistant muffler 15 is simple and low in cost, but has a poor sound damping effect as the muffler 3. The expansion cavity resistant muffler 15 is a cavity having a large volume and utilizing noise entering the abrupt interface, and the noise volume is greatly expanded and then attenuated and disappears as heat. Otherwise, the same as in fig. 4, the description will not be repeated.

The invention is suitable for noise reduction application of the smoke exhaust system of the integrated kitchen after the lower air outlet pipe is arranged, and the smoke exhaust cover 4 is provided with the kitchen range mouth smoke exhaust cover structure of the existing integrated kitchen, and the invention can be used for manufacturing the mute integrated kitchen after being provided with the muffler, the silencing air pipe and the silencing structure.

The technical principles of the present invention have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A mute range hood, characterized in that: comprises a fan (1), a muffler (3) and an oil fume suction hood (4);

The muffler (3) is arranged between the fan (1) and the fume suction hood (4), the inlet end of the fume suction cavity (9) of the muffler (3) is communicated with the fume suction hood (4), and the outlet end of the fume suction cavity (9) is communicated with the inlet end of the fan (1);

the kitchen ventilator further comprises a fan silencing box (2), the fan silencing box (2) is assembled in a kitchen cabinet, an inner silencer (5) is arranged in the fan silencing box (2), the fan (1) is arranged in the inner silencer (5), and an air inlet (19) of the fan silencing box (2) is communicated with the outlet end of the oil smoke suction cavity (9);

An air outlet silencer (8) is arranged between the air outlet of the fan (1) and the air outlet (12) of the fan sound-reducing box (2), the inlet end of the air outlet silencer (8) is communicated with the outlet end of the fan (1), and the outlet end of the air outlet silencer (8) is communicated with the air outlet (12) of the fan sound-reducing box (2);

the fan silencing box (2) and the outer shell of the silencer (3) are provided with silencing structures (7).

2. The silent smoke exhaust ventilator according to claim 1, characterized in that the fan sound-reducing box (2) is arranged at the upper part of the muffler (3), and the smoke absorbing cover (4) is arranged at the lower part of the muffler (3).

3. The silence hood of claim 1 wherein: the fan sound-eliminating box (2) is independently configured,

An air inlet (19) of the fan silencing box (2) is connected with an oil smoke outlet pipe (18) of an oil smoke suction cavity (9) of the silencer (3) through a silencing air pipe (10).

4. A mute range hood according to claim 3, wherein: an air pipe arranged between an air outlet (12) of the fan silencing box (2) and a building concentrated smoke exhaust air duct (11) is a silencing air pipe (10).

5. A mute range hood according to claim 3, wherein: the fan silencer is also provided with a second silencer (6), an air pipe interface of the second silencer (6) is connected with an air inlet (19) of the fan silencer box (2) through a silencing air pipe (10), the air pipe interface of the second muffler (6) is connected with the oil fume outlet pipe (18) of the muffler (3) through an air pipe (20), and the air outlet (12) of the fan sound-reducing box (2) is connected with the building concentrated smoke exhaust air duct (11) through the sound-reducing air pipe (10).

6. A mute cooking fume exhauster according to any one of claims 3 to 5, characterized in that: the silencing air pipe (10) comprises an inner air pipe (13) and an outer air pipe (14) which are sleeved with each other, wherein the inner air pipe is a soft air pipe with a hole net, the outer air pipe is a closed soft air pipe, and a silencing layer is arranged between the soft air pipe with the hole net and the closed soft air pipe.

7. A mute cooking fume exhauster according to any one of claims 1 to 5, characterized in that: the silencer (3) is a micropore plate type silencer or a micro-slit plate type silencer or a micropore plate anti-type composite silencer or a resistive silencer or an impedance composite silencer or an expansion cavity anti-type silencer (15), and the surface of the micropore plate is provided with an oil-sticking-free coating or a physical oil-sticking-free structure.

8. A mute cooking fume exhauster according to any one of claims 1 to 5, characterized in that: comprises an oil fume suction cover (4), when the oil fume suction cover (4) is one, the oil fume suction cover (4) is an upper oil fume suction cover or a side oil fume suction cover; or alternatively

Comprises two fume suction hoods (4), wherein the two fume suction hoods (4) are respectively an upper fume suction hood and a side fume suction hood.