WO2018094788A1

WO2018094788A1 - Range hood

Info

Publication number: WO2018094788A1
Application number: PCT/CN2016/109714
Authority: WO
Inventors: 武秋红; 李春江
Original assignee: 广东威灵电机制造有限公司; 美的威灵电机技术（上海）有限公司
Priority date: 2016-11-25
Filing date: 2016-12-13
Publication date: 2018-05-31

Abstract

A range hood (100), comprising: a body (1), a fan system (2), a fume collecting hood (3), and an auxiliary fan. The fan system (2) is connected to the body (1) and is suitable for generating airflows. The fume collecting hood (3) defines an air duct (34) communicated with the fan system (2). The fume collecting hood (3) comprises an inner hood (31) and an outer hood (32) that are arranged at an interval. An auxiliary air duct (33) is defined between the inner hood (31) and the outer hood (32). The auxiliary fan is provided in the auxiliary air duct (33) to generate airflows.

Description

Range hood

Technical field

The invention relates to a range hood.

Background technique

The structure of the range hood of the prior art drives the fan to generate suction force to achieve the smoke extraction and the dirt absorption. Due to the high-speed motor noise and the size of the range hood fan, the motor speed is generally low and the suction is limited. .

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention provides a range hood, which can have sufficient suction force during operation to achieve the purpose of sucking forward of the soot.

A range hood according to an embodiment of the present invention includes: a body; a fan system, the fan system being connected to the body and adapted to generate an air flow; a hood, the hood being connected to the body, the set The oil hood defines an air duct in communication with the fan system, the oil collecting hood includes an inner cover and a outer cover that are spaced apart, and an auxiliary air passage is defined between the inner cover and the outer cover, and the outer cover is provided The air inlet is connected to the auxiliary air duct, and the bottom of the inner cover and the outer cover are spaced apart from an air outlet that is electrically connected to the air duct; and an auxiliary fan is disposed in the auxiliary wind Inside the channel to create airflow.

According to the range hood of the embodiment of the present invention, the range hood includes an inner cover and a cover which are spaced apart from each other, and an auxiliary air passage is defined between the inner cover and the outer cover, and the outer cover is provided with an air inlet which is electrically connected to the auxiliary air passage. The bottom of the cover and the cover are spaced apart from the air outlet that is electrically connected to the air duct; the auxiliary fan is disposed in the auxiliary air duct to generate airflow. The auxiliary fan works to generate an air flow, and the air flow is blown out through the air outlet, so as to drive the flow of the air flow surrounded by the oil collecting hood to form a negative pressure in the space surrounded by the inner cover of the oil collecting hood, thereby promoting the oil collecting smoke The flow of soot during the operation of the hood to achieve the purpose of strong suction of the range hood and improve the effect of the range hood of the range hood.

In addition, the range hood according to the embodiment of the present invention may further have the following additional technical features:

According to some embodiments of the invention, the hood is formed in a flared shape with an opening downward.

Optionally, the inner cover and the outer cover of the hood are rotated around an axis thereof by an angle of less than 360°.

Further, the inner cover and the outer cover extend 180° about their axes.

Optionally, the angle at which the outer cover is inclined with respect to the horizontal direction is θ, 0° ≤ θ ≤ 90°.

Optionally, a cross section of the lower end of the outer cover is formed into a superior arc shape, a cross section of the lower end of the inner cover is formed into a poor arc shape, and a lower end of the inner cover is disposed in a lower end of the outer cover and the outer cover The air outlets are formed to be spaced apart.

Further, an angle between the tangential direction of the air outlet and the horizontal plane is φ, 0° < φ ≤ 90°.

Optionally, the oil collecting hood is provided with an oil storage box extending along a circumferential direction thereof, and the oil storage box divides the auxiliary air passage into an upper chamber and a lower chamber, and the auxiliary fan is disposed at the In the lower chamber, the air inlet and the air outlet are electrically connected to the lower chamber, and the inner cover is provided with a plurality of oil filtering holes that are electrically connected to the upper chamber.

Further, the oil storage box is detachably disposed between the air inlet and the oil filter hole, the oil storage box has a cross section formed in an S shape, and an upper end of the oil storage box is connected to the outer cover The lower end of the oil storage case is connected to the inner cover.

Further, the oil filtering hole comprises a plurality of rows, and the plurality of oil filtering holes extend upward from a bottom of the upper chamber to an upper portion of the oil collecting hood.

Optionally, the outer wall surface of the inner cover is provided with a plurality of oil guiding grooves extending downward in the oblique direction of the inner cover to the bottom of the upper chamber.

Optionally, the cross-sectional area of the auxiliary air duct gradually increases from the top to the bottom.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

1 is a schematic structural view of a range hood according to an embodiment of the present invention;

2 is a partial enlarged view of a hood of a range hood according to an embodiment of the present invention;

Figure 3 is a partial enlarged view of a hood of a range hood according to still another embodiment of the present invention;

Figure 4 is a perspective view of a range hood according to an embodiment of the present invention;

Figure 5 is a schematic structural view of an oil storage box of a range hood according to an embodiment of the present invention;

Figure 6 is a schematic view showing the structure of an inner cover of a range hood of a range hood according to an embodiment of the present invention.

Description of the reference signs:

100: Range hood;

1: body;

2: fan system;

3: oil hood, 31: inner cover, 311: oil filter hole, 312: oil guide groove, 32: outer cover, 321: air inlet, 33: auxiliary air passage, 331: air outlet, 332: upper chamber, 333: Lower chamber, 34: air duct;

4: Oil storage box.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", “Back”, “Left”, “Right”, “Vertical”, “Horizontal”, “Top”, “Bottom”, “Inside”, “Outside”, “Axial”, “Radial”, “Circumferential” The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and the simplified description, and does not indicate or imply that the device or component referred to has a specific orientation, Azimuth construction and operation are therefore not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

A range hood 100 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

1 to 6, a range hood 100 according to an embodiment of the present invention may include: a body 1, a fan system 2, a hood hood 3, and an auxiliary fan (not shown).

The fan system 2 is connected to the body 1 and is adapted to generate an air flow. The hood 3 is connected to the body 1. The hood 3 defines an air duct 34 that communicates with the fan system 2. The hood 3 includes an inner cover 31 that is spaced apart. An auxiliary air passage 33 is defined between the inner cover 31 and the outer cover 32. The outer cover 32 is provided with an air inlet 321 which is electrically connected to the auxiliary air passage 33. The bottoms of the inner cover 31 and the outer cover 32 are spaced apart from the air passage. 34 an air outlet 331; an auxiliary fan is disposed in the auxiliary air duct 33 to generate an air flow.

In other words, the fan system 2 and the hood 3 are respectively connected to the body 1, the hood 3 is disposed below the body 1, the hood 3 defines an air duct 34, and the fan system 2 rotates to generate air flow, and the fan system 2 In communication with the air duct 34, the fan system 2 draws soot through the oil collecting hood 3 during operation, and the oil smoke of the stove flows toward the oil collecting hood 3 and flows through the air duct 34 to the fan system 2, through which the indoor oil smoke can be sucked out and Drain to the outside.

As shown in FIG. 1 to FIG. 4, the hood 3 may include an inner cover 31 and an outer cover 32. An auxiliary air passage 33 is defined between the inner cover 31 and the outer cover 32. The auxiliary fan is disposed in the auxiliary air passage 33, and the outer cover 32 is disposed. An air inlet 321 is provided, and the air inlet 321 is in communication with the auxiliary air duct 33. The bottom of the inner cover 31 and the bottom of the outer cover 32 are spaced apart to form an air outlet 331. The air outlets 331 are respectively connected to the auxiliary air duct 33 and the air duct 34. . Thus, the auxiliary air blower can generate an auxiliary air flow. Specifically, the auxiliary air flow flows from the air inlet 321 on the outer cover 32 to the auxiliary air passage 33, and is guided to the air outlet 331 through the auxiliary air passage 33, and finally blows out from the air outlet 331 to assist When the airflow is blown out from the air outlet 331, the flow of air flowing to the hood 3 can be driven to form a negative pressure in the space surrounded by the inner cover 31 of the hood 3, thereby promoting the hood. 3 The flow of the soot during work to achieve the purpose of strong suction of the range hood 100 to improve the smoke absorption effect of the range hood 100.

According to the range hood 100 of the embodiment of the present invention, the hood 3 includes an inner cover 31 and a cover 32 which are spaced apart from each other, and an auxiliary air passage 33 is defined between the inner cover 31 and the outer cover 32, and the auxiliary cover 32 is provided with an auxiliary wind The air inlet 321 of the duct 33 is connected to the bottom of the inner cover 31 and the outer cover 32, and an air outlet 331 which is electrically connected to the air duct 34 is disposed. The auxiliary fan is disposed in the auxiliary air duct 33. The auxiliary fan operates to generate an air flow, and the air flow is blown out through the air outlet 331 to drive the flow of the air flow surrounded by the hood 3 to form a negative pressure in the space surrounded by the inner cover 31 of the hood 3, thereby The flow of the soot during the operation of the oil hood 3 can be promoted to achieve the purpose of the strong suction of the range hood 100, and the effect of the range hood of the range hood 100 is improved.

In some embodiments of the invention, the hood 3 may be formed as a flared opening. In other words, the opening of the hood 3 shrinks in a downward-to-up direction, and the lower end opening of the hood 3 faces the stove. Under the action of the fan system 2, the soot generated by the stove can flow to the opening of the hood 3. And flowing along the air passage 34 of the oil collecting hood 3, through the flared oil collecting hood 3, the flue gas can be better absorbed and collected. 1 and 4, the inner cover 31 and the outer cover 32 of the hood 3 may be formed in a flared shape, and the outer cover 32 is disposed outside the inner cover 31 and defines an auxiliary air passage 33 between the inner cover 31 and the inner cover 31.

Alternatively, the inner cover 31 and the outer cover 32 of the hood 3 may be rotated by an angle of less than 360° about their axes. That is, the angle of the range hood 3 extending in the circumferential direction is less than 360°. As shown in Fig. 5, the angle of the range hood 3 extending in the circumferential direction is α, and α is less than 360°. Thereby, the material cost of the oil collecting hood 3 can be reduced while ensuring the effect of the oil collecting smoke of the oil collecting hood 3, and the aesthetics of the oil collecting hood 3 can be ensured. Preferably, the inner shroud 31 and the outer shroud 32 are rotatable about their axis by 180°, i.e., a = 180°. Therefore, the effect of the oil collecting smoke of the oil collecting hood 3 can be further ensured, and the material cost of the oil collecting hood 3 can be further reduced, and the aesthetics of the oil collecting hood 3 can be ensured.

Alternatively, the angle at which the outer cover 32 is inclined with respect to the horizontal direction may be θ, 0° ≤ θ ≤ 90°. In other words, the outer cover 32 is inclined with respect to the horizontal direction, and the outer cover 32 is inclined from the top to the bottom. Thereby, it is advantageous to form the hood 3 in a flared shape, and it is also advantageous to draw air from the air inlet 321 to form an air flow. Preferably, the angle θ at which the outer cover 32 is inclined with respect to the horizontal direction may satisfy 30° ≤ θ ≤ 60°.

Alternatively, the lower end of the outer cover 32 may be formed in a superior arc shape, and the lower end of the inner cover 31 may be formed in a poor arc shape. The lower end of the inner cover 31 is disposed in the lower end of the outer cover 32 and spaced apart from the outer cover 32 to form a lower end. Tuyere 331. As shown in FIGS. 2 and 3, the lower end of the outer cover 32 is curved inwardly to form a superior arc shape, that is, the lower end of the outer cover 32 is formed in an arc shape and the arcuate arc is larger than the semicircular arc; the lower end of the inner cover 31 is bent outward. In order to form an arc having an arc shape and an arc shape smaller than a semicircle, the lower end of the inferior arc of the inner cover 31 is located in the lower end of the superior arc of the outer cover 32. Thereby, the lower end of the inner cover 31 and the lower end of the outer cover 32 are spaced apart and cooperate to form the air outlet 331. When the airflow flows out of the air outlet 331, the airflow can flow along the inner wall of the inner cover 31, thereby enclosing the inner cover 31. The flow of soot.

Advantageously, the angle between the tangential direction of the air outlet 331 and the horizontal plane may be φ, 0° < φ ≤ 90°. That is, the tangential direction of the air outlet 331 is inclined with respect to the horizontal direction. When the airflow is blown out from the air outlet 331, the airflow flows out in the tangential direction of the air outlet 331. Therefore, when the airflow flows out of the air outlet 331, the flow of the oil smoke surrounded by the inner cover 31 can be driven, and the oil smoke can be caused to flow toward the air passage 34 to enhance The smoking range of the range hood 100 is strong. Preferably, 30° ≤ φ ≤ 60°

Optionally, the oil collecting hood 3 may be provided with an oil storage box 4 extending along the circumferential direction thereof, and the oil storage box 4 partitions the auxiliary air passage 33 into an upper chamber 332 and a lower chamber 333, and the auxiliary fan is disposed in the lower chamber. In the chamber 333, the air inlet 321 and the air outlet 331 are electrically connected to the lower chamber 333, and the inner cover 31 is provided with a plurality of oil filtering holes 311 which are electrically connected to the upper chamber 332. Thereby, the auxiliary fan operates to generate an air flow, and the air flow flows from the air inlet 321 to the lower chamber 333, and flows through the lower chamber 333 to the air outlet 331, and the airflow is blown out from the air outlet 331 to drive the flow of the air surrounded by the inner cover 31. In order to enhance the wind of the range hood of the range hood, under the action of the fan system 2, the soot flows through the oil filter hole 311 on the inner cover 31 to the upper chamber 332, and flows through the upper chamber 332 to the range hood 100. The wind tunnel 34 is discharged to the outside through the air duct 34. The separation and filtering of the soot can be realized by the oil filtering hole 311, and the filtered dirt flows into the oil storage box 4 through the center of gravity, so that the cooking stove and the food can be clean and tidy without being contaminated.

Further, the oil storage case 4 is detachably disposed between the air inlet 321 and the oil filter hole 311, and when the oil storage box 4 is required for cleaning, the disassembly and installation of the oil storage case 4 is facilitated. The oil storage box 4 is formed in an S-shaped cross section, and the upper end of the oil storage case 4 is connected to the outer cover 32. The lower end of the oil storage case 4 is connected to the inner cover 31, wherein the S-shaped upper opening of the oil storage case 4 faces the outer cover 32. And corresponding to the air inlet 321 , the S-shaped lower opening of the oil storage case 4 faces the inner cover 31 direction and the lower portion of the oil storage case 4 is connected to the inner cover 31, whereby between the upper chamber 332 and the lower chamber 333 The S-shaped oil storage case 4 is spaced apart, and the air inlet 321 communicates with the lower chamber 333, and the oil stain filtered by the oil filtering hole 311 of the inner cover 31 can flow toward the oil storage case 4 along the outer wall surface of the inner cover 31.

Further, the oil filter hole 311 may include a plurality of rows, and the plurality of rows of oil filter holes 311 extend upward from the bottom of the upper chamber 332 to the upper portion of the hood 3. As shown in FIG. 1 and FIG. 4, each row may include a plurality of oil filtering holes 311, and a plurality of oil filtering holes 311 of each row may be spaced apart along the circumferential direction of the inner cover 31, and the plurality of oil filtering holes 311 are upper by The bottom of the chamber 332 extends upward, and the plurality of oil filtering holes 311 can extend the upper end of the inner cover 31, so that not only the oil filtering hole 311 is distributed reasonably, but also the oil stained by the oil filtering hole 311 is filtered outside the inner cover 31. The wall surface converges and flows to the oil storage box 4, and at the same time, the area of the oil filter hole 311 of the inner cover 31 is increased to ensure the filtering effect of the oil filter hole 311. Further, the plurality of oil filtering holes 311 of each row are evenly spaced apart in the circumferential direction, so that the oil filtering holes 311 are uniformly distributed to improve the filtering effect of the soot of the inner cover 31, and also facilitate the concentration of the oil stain after filtering.

Advantageously, as shown in FIG. 6, the outer wall surface of the inner cover 31 may be provided with a plurality of oil guiding grooves 312 extending downward in the oblique direction of the inner cover 31 to the bottom of the upper chamber 332. In other words, the outer wall surface of the inner cover 31 may be provided with a plurality of oil guiding grooves 312, and the plurality of oil guiding grooves 312 may be spaced apart along the circumferential direction of the inner cover 31 and each oil guiding groove 312 is covered by the inner cover along the inclined direction of the inner cover 31. The upper end of 31 extends to the bottom of the upper chamber 332, and in particular, each of the oil guiding grooves 312 can extend to the oil storage tank 4 such that The oil stained by the plurality of oil filtering holes 311 can flow into the oil groove 312, and the oil in each oil guiding groove 312 finally flows into the oil storage tank 4 through the oil guiding groove 312. Thus, the passage of the oil guiding groove 312 not only facilitates the concentration and flow of the oil stain, but also facilitates the directing of the oil stain to the oil storage tank 4.

Alternatively, the cross-sectional area of the auxiliary duct 33 may gradually increase from the top to the bottom. Thereby, not only the formation of the flared structure of the hood hood 3 but also the cross-sectional area of the lower end of the auxiliary duct 33 is larger than the cross-sectional area of the upper end of the auxiliary duct 33, and thus, at the lower end of the auxiliary duct 33 The air is enlarged to facilitate the auxiliary fan to perform air amplification through the end structure of the lower end of the auxiliary air passage 33 to blow strong wind, and a negative pressure is formed on the soot area of the hood 3 to facilitate the suction of the soot.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A range hood, characterized in that it comprises:

Body

a fan system coupled to the body and adapted to generate an air flow;

a hood, the hood is connected to the body, the hood defining a duct communicating with the fan system, the hood comprising an inner cover and a cover spaced apart, the inner An auxiliary air passage is defined between the cover and the outer cover, and the outer cover is provided with an air inlet communicating with the auxiliary air passage, and the inner cover and the bottom of the outer cover are spaced apart from the air guide Passing through the air outlet;

An auxiliary fan is disposed in the auxiliary air duct to generate an air flow.
A range hood according to claim 1, wherein said hood is formed in a flared shape with an opening downward.
The range hood according to claim 2, wherein said inner shroud and said outer shroud of said hood are rotated about an axis thereof by an angle of less than 360°.
A range hood according to claim 3 wherein said inner shroud and said outer shroud extend 180° about their axis.
The range hood according to claim 2, wherein the angle at which the outer cover is inclined with respect to the horizontal direction is θ, 0° ≤ θ ≤ 90°.
A range hood according to claim 2, wherein a cross section of the lower end of the outer cover is formed in a superior arc shape, a cross section of the lower end of the inner cover is formed in a poor arc shape, and a lower end of the inner cover is provided at The air outlet is formed in the lower end of the outer cover and spaced apart from the outer cover.
The range hood according to claim 6, wherein an angle between a tangential direction of the air outlet and a horizontal plane is φ, 0° < φ ≤ 90°.
A range hood according to claim 2, wherein said hood is provided with an oil storage tank extending in a circumferential direction thereof, said oil storage tank separating said auxiliary air passage into an upper chamber and a lower chamber, the auxiliary fan is disposed in the lower chamber, the air inlet and the air outlet are electrically connected to the lower chamber, and the inner cover is provided with a plurality of upper chamber guides Through the oil filter hole.
The range hood according to claim 8, wherein the oil storage case is detachably disposed between the air inlet and the oil filter hole, and a cross section of the oil storage case is formed in an S shape. An upper end of the oil storage case is connected to the outer cover, and a lower end of the oil storage case is connected to the inner cover.
A range hood according to claim 9, wherein said oil filter hole comprises a plurality of rows, said plurality of oil filtering holes extending upward from a bottom of said upper chamber to an upper portion of said hood.
The range hood according to claim 8, wherein the outer wall surface of the inner cover is provided with a plurality of oil guiding grooves extending downward in the oblique direction of the inner cover to the bottom of the upper chamber.
A range hood according to any one of claims 2 to 11, wherein the sectional area of the auxiliary duct gradually increases from the top to the bottom.