CN108709212B

CN108709212B - Front silencing and filtering device for range hood

Info

Publication number: CN108709212B
Application number: CN201810755065.5A
Authority: CN
Inventors: 周水清; 李哲宇; 王曼
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2018-07-11
Filing date: 2018-07-11
Publication date: 2023-10-20
Anticipated expiration: 2038-07-11
Also published as: CN108709212A

Abstract

The front silencing and filtering device for the range hood comprises a hollow cylindrical body, wherein a lampblack outlet and a lampblack inlet are respectively arranged on the circumferential surface of the body, and the lampblack outlet and the lampblack inlet are respectively arranged on the front side surface of the body and the rear side surface of the body; the oil smoke outlet is positioned at the middle position of the body along the axial direction, is an arc-shaped opening extending along the circumferential direction of the body, and is communicated with the inner cavity of the body; the oil smoke import includes two oil smoke import subdivisions, and two oil smoke import subdivisions are located oil smoke export along body axial both sides respectively, and two oil smoke import subdivisions include respectively along a plurality of row's of axial interval setting of body through-hole group, and every group through-hole group includes a plurality of through-hole that a plurality of along the circumference interval setting of body, and the through-hole is linked together with the inner chamber of body.

Description

Front silencing and filtering device for range hood

Technical Field

The application relates to a silencing and filtering device, in particular to a front silencing and filtering device for a range hood.

Background

With the improvement of life quality, the performance requirements of people on the range hood are also increasing. The range hood has a plurality of component parts, and different parts have certain influence on the performance of the range hood. The performance indexes of the range hood may generally include: inlet air volume, noise size, oil smoke absorption mode, oil separation degree and the like. The oil separation degree and the noise level are the main content in the range hood efficiency mark.

The traditional range hood can produce great noise when inhaling the oil smoke, and long-time use can make the people become dysphoric, simultaneously because the grease separation degree is not high, along with the increase of operating time, the inside greasy dirt deposit of range hood can be more and more, and this can influence the working property of range hood to a great extent. If the cleaning is not carried out, the service life of the range hood can be reduced, and fire hazard can be caused when the cleaning is serious, but the range hood is cleaned, so that the range hood needs to be disassembled firstly, and the range hood is very inconvenient to disassemble.

Disclosure of Invention

The application provides a front silencing and filtering device for a range hood, which aims to overcome the defects of overlarge noise and low grease separation degree of the existing range hood.

The technical scheme adopted by the application is as follows:

the embodiment of the application provides a front silencing and filtering device for a range hood, which comprises a hollow cylindrical body, wherein a lampblack outlet and a lampblack inlet are respectively arranged on the circumferential surface of the body, and the lampblack outlet and the lampblack inlet are respectively positioned on the front side surface of the body and the rear side surface of the body;

the oil smoke outlet is positioned at the middle position of the body along the axial direction, is an arc-shaped opening extending along the circumferential direction of the body, and is communicated with the inner cavity of the body;

the oil smoke import includes two oil smoke import branches, and two oil smoke import branches are located respectively the oil smoke export is followed body axial both sides, and two oil smoke import branches include respectively along a plurality of row's of axial interval setting of body through-hole group, every group through-hole group includes a plurality of through-hole that a plurality of set up along the circumference interval of body, just the through-hole with the inner chamber of body is linked together.

Further, the central angle of the oil smoke outlet on the circumferential surface of the body is 180 degrees.

Further, the central angle between two adjacent through holes in the through hole group is 30 degrees.

Further, the two oil smoke inlet sections are respectively positioned at two ends of the body along the axial direction.

The beneficial effects of the application are as follows:

1. the oil smoke enters the device through the through hole of the oil smoke inlet, and the through hole inflow can form a filtering effect due to the smaller diameter of the through hole. And when the oil smoke flows through the through holes, the convection current performs rectification, so that the working noise generated when the through holes suck the oil smoke is effectively reduced. Meanwhile, when the fan in the range hood works, the radiated sound waves can be blocked by the device, and the working noise of the range hood can be reduced to a certain extent.

2. When the oil smoke flows in from the through holes of the oil smoke inlet parts at the two sides, the oil smoke can turn around and flow towards the middle of the body, and the oil smoke entering from the oil smoke inlet parts at the two sides can collide in the middle of the body and finally flows out from the oil smoke outlet. The oil fume entering from the oil fume inlets on two sides flows at high speed in the body, finally collides with the middle part of the body, the flow and the flow direction of the oil fume change greatly in the moment, and the oil in the oil fume is easy to separate from the fume in the process of folding and collision due to the large density and the large volume of the oil fume, so that the oil and fat separation degree of the range hood can be improved.

Drawings

Fig. 1 is a schematic view of the structure of the front side of the device in one embodiment.

Fig. 2 is a schematic diagram of the structure of the smoke inlet in one embodiment.

Fig. 3 is a schematic view of the structure of the rear side of the device in one embodiment.

Fig. 4 is a schematic diagram of the structure of the fume outlet in an embodiment.

Fig. 5 is a schematic view of a structure of a range hood and a grid-plate type fume suction inlet thereof according to an embodiment.

Fig. 6 is a schematic view of the cooperation of the device and the range hood according to an embodiment.

Detailed Description

The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that, as the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present application and simplifying the description based on the azimuth or positional relationship shown in the drawings, it should not be construed as limiting the present application, but rather should indicate or imply that the devices or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.

In the description of the present application, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Referring to the drawings, the application provides a front silencing and filtering device for a range hood, wherein the device a comprises a hollow cylindrical body 10, a lampblack outlet 30 and a lampblack inlet 20 are respectively arranged on the circumferential surface of the body 10, and the lampblack outlet 30 and the lampblack inlet 20 are respectively arranged on the front side surface of the body 10 and the rear side surface of the body 10;

specifically, the body 10 has end surfaces at both ends in the axial direction.

The oil smoke outlet 30 is positioned at the middle position of the body 10 along the axial direction, the oil smoke outlet 30 is an arc-shaped opening extending along the circumferential direction of the body 10, and the oil smoke outlet 30 is communicated with the inner cavity of the body 10;

the oil smoke import 20 includes two oil smoke import subsections 21, 22, and two oil smoke import subsections 21, 22 are located respectively the oil smoke export 30 is followed body 10 axial both sides, and two oil smoke import subsections 21, 22 include respectively along the axial interval of body 10 a plurality of listed as through-hole group that sets up, every group through-hole group includes a plurality of through-hole 23 that a plurality of set up along body 10 circumference interval, just through-hole 23 with body 10's inner chamber is linked together.

Specifically, the through hole 23 is a circular hole.

The central angle of the oil smoke outlet 30 on the circumferential surface of the body 1 is 180 degrees. Namely, the central angle corresponding to the circumferential surface of the body 1 covered by the oil smoke outlet 30 is 180 degrees.

Specifically, the cross-sectional shape of the oil smoke outlet 30 is semicircular.

The central angle between two adjacent through holes 23 in the through hole group is 30 degrees, namely, the central angle corresponding to the circumferential surface of the body 1 positioned between the centers of the two through holes 23 is 30 degrees.

Two fume inlet sections 21, 22 are respectively positioned at two ends of the body 10 along the axial direction.

Specifically, the body 10 is hollow and cylindrical, the length of the body 10 may be 350mm, the diameter may be 115mm, and the wall thickness may be 7.5mm.

Specifically, the width of the fume outlet 30 along the circumferential direction of the body 10 is 100mm.

Specifically, each group of through holes comprises four through holes 23, the diameter of each through hole 23 is 12mm, and each of the two fume inlet sections 21 and 22 comprises 12 rows of through holes arranged at intervals along the axial direction of the body 10.

The specific matching mode of the device a and the range hood b is as follows: as shown in fig. 5, the range hood b has a grill type fume suction port c, and the grill type fume suction port c is removed and the device a is mounted on the mounting position of the grill type fume suction port c as shown in fig. 6. The oil smoke generated by the kitchen range enters the inner cavity of the device a through the through hole 23 and then enters the range hood through the oil smoke outlet 30.

After the device a is applied to the range hood b, the grease separation degree can be effectively improved, the noise generated during the operation of the range hood is reduced, and the specific principle of reducing the noise and improving the grease separation degree of the range hood is as follows:

the fume enters the device a through the through hole 23 of the fume inlet 20, and the inflow of the through hole can form a filtering effect due to the smaller diameter of the through hole 23. And when the oil smoke flows through the through holes 23, the convection current performs rectification, so that the working noise generated when the oil smoke is sucked into the through holes 23 is effectively reduced. Meanwhile, when the fan in the range hood b works, the radiated sound waves can be blocked by the device a, and the working noise of the range hood b can be reduced to a certain extent.

When the oil smoke flows in from the through holes 23 of the oil smoke inlet sections 21 and 22 at the two sides, the oil smoke can turn around and flow in the middle of the body 10, and the oil smoke entering from the oil smoke inlet sections 21 and 22 at the two sides can collide in the middle of the body 10 and finally flow out from the oil smoke outlet 30. The oil fume entering from the oil fume inlet parts 21 and 22 on two sides flows at a high speed in the body 10, finally collides with the middle part of the body 10, the flow and the flow direction of the oil fume change greatly in the moment, and the oil in the oil fume is easy to separate from the fume in the process of folding and collision due to the large density and volume of the oil fume, so that the oil and fat separation degree of the range hood b can be improved.

The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present application should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present application and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A leading amortization filter equipment for range hood, its characterized in that: the device comprises a hollow cylindrical body, wherein a lampblack outlet and a lampblack inlet are respectively arranged on the circumferential surface of the body, and the lampblack outlet and the lampblack inlet are respectively positioned on the front side surface of the body and the rear side surface of the body;

the oil smoke inlet comprises two oil smoke inlet parts, the two oil smoke inlet parts are respectively positioned at two sides of the oil smoke outlet along the axial direction of the body, the two oil smoke inlet parts respectively comprise a plurality of row of through hole groups which are arranged at intervals along the axial direction of the body, each group of through hole groups comprises a plurality of through holes which are arranged at intervals along the circumferential direction of the body, and the through holes are communicated with the inner cavity of the body;

the central angle of the oil smoke outlet on the circumferential surface of the body is 180 degrees; the central angle between two adjacent through holes in the through hole group is 30 degrees.

2. A front-end sound-deadening filtering device for a range hood as set forth in claim 1, wherein: the two oil smoke inlet sections are respectively positioned at two ends of the body along the axial direction.