CN217816932U

CN217816932U - Smoke exhaust ventilator

Info

Publication number: CN217816932U
Application number: CN202221278832.6U
Authority: CN
Inventors: 龚圆杰; 张涛; 黄斌
Original assignee: Guangdong Chunmi Electrical Technology Co Ltd
Current assignee: Guangdong Chunmi Electrical Technology Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-11-15
Anticipated expiration: 2032-05-25

Abstract

The utility model provides a range hood, which comprises a casing, a fan component and an air inlet ring; the shell comprises a first shell and a second shell connected with the first shell, wherein an air cavity is formed in the first shell, an air inlet throat is formed in the second shell, and the air inlet throat is communicated with the air cavity; the fan assembly is arranged in the air cavity; the air inlet ring is arranged at the inlet end of the second shell and comprises a flow guide protrusion, and the protruding direction of the flow guide protrusion is opposite to the air inlet direction of the air inlet throat. Thereby the problem of among the prior art because of the length of the air inlet throat of casing compressed leads to the aerodynamic loss increase of fan subassembly, and then reduced range hood's air performance is solved.

Description

Smoke exhaust ventilator

Technical Field

The utility model relates to a range hood's technical field especially relates to a range hood.

Background

A range hood machine is also called a range hood and is a kitchen appliance for purifying the kitchen environment. The kitchen range hood is arranged above a kitchen range, can rapidly pump away waste burnt by the range and oil smoke harmful to human bodies generated in the cooking process, and exhaust the oil smoke out of a room, and simultaneously condenses and collects the oil smoke, thereby reducing pollution, purifying air and having the safety guarantee effects of gas defense and explosion prevention.

The existing range hood generally works through a fan assembly to form a negative pressure area at a main smoke suction port, so that rising oil smoke can sequentially pass through an oil screen and an air inlet throat of a case by utilizing the principle of pressure difference, then enters an air cavity of the case, and finally is discharged through a fan wind wheel. In order to optimize the appearance of the range hood, the length of the air inlet throat is compressed, but the pneumatic loss of the fan assembly is increased, and the air performance of the range hood is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a range hood to solve among the prior art because of the length of the air inlet throat of casing compressed and lead to the pneumatic loss increase of fan subassembly, and then reduced range hood's the technical problem of air performance.

The utility model provides a range hood, range hood includes:

the air conditioner comprises a shell, a fan and a fan, wherein the shell comprises a first shell and a second shell connected with the first shell, an air cavity is formed in the first shell, an air inlet throat is formed in the second shell, and the air inlet throat is communicated with the air cavity;

a fan assembly disposed in the air cavity;

the air inlet ring is arranged at the inlet end of the second shell and comprises a flow guide protrusion, and the protruding direction of the flow guide protrusion is opposite to the air inlet direction of the air inlet throat.

As an embodiment of the utility model, the air inlet circle still includes the steady voltage portion, the steady voltage portion by the bellied inboard of water conservancy diversion is extended and is formed, just the extending direction of steady voltage portion with the air inlet direction of air inlet throat is the same.

As an embodiment of the utility model, the air inlet circle still includes the fixed part, the fixed part by the bellied outside of water conservancy diversion is buckled the fixed part that extends, the fixed part with the second casing is connected.

As an embodiment of the utility model, range hood still includes the connecting piece, the connecting piece include first connecting portion and certainly a side of first connecting portion is buckled and is extended the second connecting portion that forms, first connecting portion with the fixed part is connected, the second connecting portion with the second casing is connected.

As an embodiment of the present invention, the second casing includes a first back plate portion, a first front plate portion and two first side plate portions, the first front plate portion is spaced from the first back plate portion; the two first side plate parts are arranged at intervals relatively and connected between the first back plate part and the first side plate part;

the water conservancy diversion is protruding to be divided into first protruding section, the protruding section of second and the protruding section of third in proper order, first protruding section is followed one of them the end limit of first curb plate portion extends, the protruding section of second is followed the end limit of first front plate portion extends, the protruding section of third is followed one of them another the end limit of first curb plate portion extends.

As an embodiment of the utility model, first protruding section the protruding section slope of third sets up, just the higher end of first protruding section with the one end of the protruding section of second is connected, the higher end of the protruding section of third with the other end of the protruding section of second is connected.

As an embodiment of the utility model, range hood still collects the cigarette subassembly, the collection cigarette subassembly is including collection smoke shell and oil net, collection smoke shell with the second casing is connected, oil net with collection smoke shell is connected and is formed collection smoke chamber jointly, just collection smoke chamber with the air inlet throat intercommunication.

As an embodiment of the utility model, the second connecting portion with the collection cigarette shell is connected.

As an embodiment of the utility model, the oil net includes first net part, second net part and third net part, first net part with the relative interval of second net part sets up on the collection chimney, the third net part is connected first net part with between the second net part, and be in collection smoke cavity orientation in the direction of air inlet throat, the third net part with distance between the collection chimney increases gradually.

As an embodiment of the utility model, the collection cigarette subassembly still includes the apron, the apron with collection cigarette shell activity is rotated and is connected, the apron is used for the lid to close the oil net or open the oil net.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

in the utility model, when the fan component in the air cavity starts to work, the air inlet throat can form a negative pressure area so as to draw smoke oil into the air inlet throat and the air cavity through a negative pressure difference; based on the coanda wall attachment principle, an air inlet ring is arranged at the inlet end of the second shell, and the protruding direction of a flow guide bulge of the air inlet ring is opposite to the air inlet direction of the air inlet throat; therefore, in the flowing process of the smoke oil, the flow guide protrusions can attract the smoke oil originally diffused outwards from the air inlet throat, the outwards diffused attracted smoke oil flows towards the air inlet throat, the suction quantity of the smoke oil sucked by the pneumatics of the fan assembly is improved, and the air performance of the range hood is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a schematic view of a part of a structure of a range hood according to an embodiment of the present invention;

fig. 3 is a sectional view of a range hood according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the oil screen, the air inlet ring and the connecting piece;

FIG. 5 is a schematic view of the structure of the air inlet ring and the connecting member;

FIG. 6 is a schematic structural view of an air inlet ring;

fig. 7 is a cross-sectional view of an air intake collar.

Wherein: 100. a range hood; 10. a housing; 101. a wind cavity; 102. an air intake throat; 11. a first housing; 12. a second housing; 121. a first back plate portion; 122. a first front plate portion; 123. a first side plate portion; 20. a fan assembly; 30. a smoke collection assembly; 301. a smoke collection cavity; 31. collecting the cigarette shell; 32. an oil screen; 321. a first net section; 322. a second net section; 323. a third net section; 33. a cover plate; 40. an air inlet ring; 41. a flow guide bulge; 411. a first convex section; 412. a second convex section; 413. a third convex section; 42. a voltage stabilizing part; 43. a fixed part; 50. a connecting member; 51. a first connection portion; 52. a second connecting portion; 53. and a third connecting portion.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present invention provides a range hood 100, wherein the range hood 100 includes a casing 10, a fan assembly 20 and a smoke collecting assembly 30, the fan assembly 20 is disposed in the casing 10; collection cigarette subassembly 30 includes collection cigarette shell 31 and oil net 32, collection cigarette shell 31 with the casing 10 is connected, oil net 32 with collection cigarette shell 31 is connected and is formed collection smoke chamber 301 jointly (not shown in the figure), just collection smoke chamber 301 with the inside intercommunication of casing 10. The range hood 100 collects the oil smoke in a large range through the smoke collection cavity 301, and then guides the oil smoke into the casing 10 in a centralized manner.

With reference to fig. 4-7, the range hood 100 further includes an air inlet ring 40; the casing 10 comprises a first casing 11 and a second casing 12 connected with the first casing 11, wherein the first casing 11 is provided with an air cavity 101, the second casing 12 is provided with an air inlet throat 102, and the air inlet throat 102 is communicated with the air cavity 101; the fan assembly 20 is arranged in the air cavity 101; the air inlet ring 40 is arranged at the inlet end of the second shell 12, a flow guide protrusion 41 is formed on the air inlet ring 40, and the protruding direction of the flow guide protrusion 41 is opposite to the air inlet direction of the air inlet throat 102.

Referring to fig. 3, the smoke collection shell 31 is connected to the housing 10, the smoke collection cavity 301 is communicated with the air inlet throat 102, that is, the smoke collection cavity 301, the air inlet throat 102 and the air cavity 101 are sequentially communicated, and the oil smoke sequentially passes through the smoke collection cavity 301 and the air inlet throat 102 and then enters the air cavity 101.

In the utility model, when the fan assembly 20 in the air cavity 101 starts to work, the air inlet throat 102 forms a negative pressure region, so that the smoke oil is pumped into the air inlet throat 102 and the air cavity 101 through the negative pressure difference; based on the coanda wall attachment principle, an air inlet ring 40 is arranged at the inlet end of the second shell 12, and the protruding direction of a flow guide protrusion 41 of the air inlet ring 40 is opposite to the air inlet direction of the air inlet throat 102; therefore, in the flowing process of the smoke oil, the guiding protrusion 41 can attract the smoke oil originally diffused outward to the air inlet throat 102, and the diffused oil smoke flows toward the air inlet throat 102, so that the suction amount of the smoke oil sucked by the pneumatics of the fan assembly 20 is increased, and the air performance of the range hood 100 is ensured, thereby solving the technical problems that the length of the air inlet throat 102 of the casing 10 is compressed to increase the pneumatic loss of the fan assembly 20 in the prior art, and further the air performance of the range hood 100 is reduced.

In an embodiment, referring to fig. 7, the air inlet ring 40 further includes a pressure stabilizing portion 42, the pressure stabilizing portion 42 is formed by extending the inner side of the flow guiding protrusion 41, and the extending direction of the pressure stabilizing portion 42 is the same as the air inlet direction of the air inlet throat 102.

In this embodiment, the pressure stabilizing portion 42 is formed by extending the inner side of the flow guiding protrusion 41 toward the air inlet throat 102, so that the pressure stabilizing portion 42 can stabilize the air flow sucked by the flow guiding protrusion 41 and increase a certain air pressure value.

In an embodiment, referring to fig. 5 to 7, the air inlet ring 40 further includes a fixing portion 43, the fixing portion 43 is bent and extended from an outer side of the guide protrusion 41, and the fixing portion 43 is connected to the second housing 12.

In the present embodiment, the fixing portion 43 is formed by bending and extending the outer side of the flow guiding protrusion 41, so that the connection between the air inlet ring 40 and the second housing 12 can be realized through the fixing portion 43, and the interference to the wind flow is avoided.

In an embodiment, referring to fig. 4 and 5, the range hood 100 further includes a connecting member 50, the connecting member 50 includes a first connecting portion 51 and a second connecting portion 52 formed by bending and extending from one side of the first connecting portion 51, the first connecting portion 51 is connected to the fixing portion 43, and the second connecting portion 52 is connected to the second housing 12.

In the present embodiment, the connection between the fixing portion 43 and the connecting member 50 is achieved by the first connecting portion 51, and the connection between the second housing 12 and the connecting member 50 is achieved by the second connecting portion 52, so that the connection between the second housing 12 and the air inlet ring 40 is indirectly achieved.

In some embodiments, the smoke collection shell 31 is further connected to the second connecting portion 52, so that the positional relationship among the smoke collection shell 31, the air inlet ring 40 and the casing 10 is more secure.

In some specific embodiments, referring to fig. 4 and 5, the other side of the connecting member 50 is further formed with a third connecting portion 53, and the third connecting portion 53 is connected to the oil screen 32 plate, so as to improve the connectivity between the smoke collection cavity 301 and the air intake throat 102.

Referring to fig. 2 and 3, the second housing 12 includes a first back plate portion 121, a first front plate portion 122, and two first side plate portions 123, wherein the first front plate portion 122 is disposed opposite to the first back plate portion 121 at an interval; the two first side plate parts 123 are oppositely arranged at intervals and connected between the first back plate part 121 and the first side plate part 123; namely, the first back plate portion 121, the first front plate portion 122 and the two first side plate portions 123 together form the air intake throat 102.

In an embodiment, referring to fig. 6, the flow guiding protrusion 41 is sequentially divided into a first protrusion section 411, a second protrusion section 412 and a third protrusion section 413, the first protrusion section 411 extends along an end edge of one of the first side plate portions 123, the second protrusion section 412 extends along an end edge of the first front plate portion 122, and the third protrusion section 413 extends along an end edge of the other one of the first side plate portions 123.

The oil smoke enters from the front of the air inlet throat 102 and also enters from the side of the air inlet throat 102; therefore, the flow guide protrusion 41 is disposed to divide the flow guide protrusion 41 into a first protrusion section 411, a second protrusion section 412 and a third protrusion section 413 in sequence, and the first protrusion section 411 extends along the end edge of one of the first side plate portions 123, the second protrusion section 412 extends along the end edge of the first front plate portion 122, and the third protrusion section 413 extends along the end edge of the other one of the first side plate portions 123, so that the front oil smoke can be sucked by the second protrusion section 412, the side oil smoke can be sucked by the first protrusion section 411 and the third protrusion section 413, and the adhesion attraction of the flow guide protrusion 41 to the oil smoke is improved.

Referring to fig. 3, an end of the first back plate portion 121 away from the first housing 11 is lower than an end of the first front plate portion 122 away from the first housing 11. Therefore, the inlet of the intake throat 102 is disposed obliquely to increase the inflow amount of the intake throat 102.

Specifically, referring to fig. 3, the first convex section 411 and the third convex section 413 are obliquely arranged, and the higher end of the first convex section 411 is connected with one end of the second convex section 412, and the higher end of the third convex section 413 is connected with the other end of the second convex section 412. The air inlet ring 40 is also obliquely arranged, so that the range of oil smoke suction is enlarged, air inlet is smoother, and the backflow prevention capability is improved.

Referring to fig. 4, the oil screen 32 includes a first screen portion 321, a second screen portion 322, and a third screen portion 323, the first screen portion 321 and the second screen portion 322 are oppositely disposed on the smoke collecting shell 31 at an interval, the third screen portion 323 is connected between the first screen portion 321 and the second screen portion 322, and a distance between the third screen portion 323 and the smoke collecting shell 31 is gradually increased in a direction from the smoke collecting cavity 301 toward the air intake throat 102.

It can be understood that the third net part 323 is located at the front of the stove, and the first net part 321 and the second net part 322 are located at the lateral side of the stove, so that for the smoke and oil generated by the stove, not only the front suction can be performed through the first net part 321, but also the lateral suction can be performed through the second net part 322 and the third net part 323, thereby increasing the suction amount of the range hood 100; in addition, in the direction of smoke collecting cavity 301 towards air inlet throat 102, the distance between third net portion 323 and second casing 12 gradually increases, that is, third net portion 323 inclines and sets up to the coverage area of the relative range of third net portion 323 has been increased, and then the oil smoke intake of third net portion 323 has been improved.

In one embodiment, referring to fig. 1-3, the smoke collection assembly 30 further comprises a cover plate 33, the cover plate 33 is movably and rotatably connected with the smoke collection shell 31, and the cover plate 33 is used for covering the oil net 32 or opening the oil net 32.

When the range hood 100 is used, the cover plate 33 can be turned over based on the rotary connection between the cover plate 33 and the second back plate, so that the oil screen 32 is opened, and the function of absorbing oil smoke is realized; after the range hood 100 is used, the cover plate 33 is covered back to cover the oil screen 32, so that the oil screen 32 and the interior of the casing 10 are kept clean.

The above embodiments are only used to illustrate the technical solutions of the present invention, and do not limit the protection scope of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step, are within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still make no creative work on the condition of conflict, and make mutual combination, addition and deletion, or other adjustments according to the features in the embodiments of the present invention, thereby obtaining other technical solutions which are different and do not depart from the concept of the present invention, and these technical solutions also belong to the scope to be protected by the present invention.

Claims

1. A range hood, comprising:

a fan assembly disposed in the air cavity;

2. The range hood of claim 1, wherein the air inlet ring further comprises a pressure stabilizer formed by extending the inner side of the flow guide protrusion, and the extending direction of the pressure stabilizer is the same as the air inlet direction of the air inlet throat channel.

3. The range hood of claim 1 or 2, wherein the air inlet ring further comprises a fixing portion, the fixing portion is bent and extended from the outer side of the flow guide protrusion, and the fixing portion is connected with the second housing.

4. The range hood according to claim 3, further comprising a connecting member, wherein the connecting member includes a first connecting portion and a second connecting portion bent and extended from a side of the first connecting portion, the first connecting portion is connected to the fixing portion, and the second connecting portion is connected to the second housing.

5. The range hood of claim 1, wherein the second housing comprises a first back plate portion, a first front plate portion and two first side plate portions, the first front plate portion and the first back plate portion being spaced apart from each other; the two first side plate parts are oppositely arranged at intervals and connected between the first back plate part and the first side plate part;

6. The range hood of claim 5, wherein the first protruding section and the third protruding section are obliquely arranged, a higher end of the first protruding section is connected with one end of the second protruding section, and a higher end of the third protruding section is connected with the other end of the second protruding section.

7. The range hood of claim 4, further comprising a smoke collection assembly, wherein the smoke collection assembly comprises a smoke collection shell and an oil screen, the smoke collection shell is connected with the second housing, the oil screen is connected with the smoke collection shell and jointly forms a smoke collection cavity, and the smoke collection cavity is communicated with the air inlet throat.

8. The range hood of claim 7, wherein the second connecting portion is connected to the fume collecting housing.

9. The range hood according to claim 7, wherein the oil screen comprises a first screen portion, a second screen portion and a third screen portion, the first screen portion and the second screen portion are oppositely arranged on the smoke collection housing at an interval, the third screen portion is connected between the first screen portion and the second screen portion, and a distance between the third screen portion and the smoke collection housing is gradually increased in a direction of the smoke collection cavity toward the air inlet throat.

10. The range hood of claim 7, wherein the fume collecting assembly further comprises a cover plate, the cover plate is movably and rotatably connected with the fume collecting housing, and the cover plate is used for covering the oil screen or opening the oil screen.