CN109140547A - Range hood - Google Patents

Range hood Download PDF

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Publication number
CN109140547A
CN109140547A CN201710504580.1A CN201710504580A CN109140547A CN 109140547 A CN109140547 A CN 109140547A CN 201710504580 A CN201710504580 A CN 201710504580A CN 109140547 A CN109140547 A CN 109140547A
Authority
CN
China
Prior art keywords
guide duct
outlet
air
section
range hood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710504580.1A
Other languages
Chinese (zh)
Inventor
向运明
卿立勇
刘池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Electrical Appliances Jiangsu Co Ltd
BSH Hausgeraete GmbH
Original Assignee
BSH Electrical Appliances Jiangsu Co Ltd
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Electrical Appliances Jiangsu Co Ltd, BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Electrical Appliances Jiangsu Co Ltd
Priority to CN201710504580.1A priority Critical patent/CN109140547A/en
Priority to EP18176223.8A priority patent/EP3421891B1/en
Publication of CN109140547A publication Critical patent/CN109140547A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Duct Arrangements (AREA)

Abstract

A kind of range hood (1), comprising: casing (30);The blower (11) being mounted in casing (30), blower (11) have air inlet (11a) and air outlet (11b);It further include the guide duct (12) being mounted in casing (30), guide duct (12) has air inlet (12a) and air outlet (12b), and the air outlet (12b) of guide duct is connected in the air inlet (11a) of blower;Noise reduction micropore is provided on the tube wall of guide duct (12).The noise that range hood (1) operation generates can appear the noise reduction micropore on guide duct (12) when passing through guide duct (12), noise repeatedly reflects to and fro in the space between the tube wall and casing (30) of guide duct (12), it can weaken by multiple reflections noise, to achieve the effect that smoking machine noise reduction.

Description

Range hood
Technical field
The present invention relates to the technical fields of kitchen appliance, and in particular to a kind of range hood of low noise.
Background technique
In skyscraper, oil smoke can be all discharged into common conduit by the range hood that every household uses, and multiple users are same When Shi Yunhang smoking machine, the inside of common conduit will form higher static pressure.In order to guarantee enough air quantity, range hood requirement Higher static pressure is provided.
But promoted and will cause range hood generation very big noise while static pressure brings enough air quantity, to influence User uses the comfort of range hood.
Summary of the invention
Present invention solves the technical problem that being how to reduce the noise generated when range hood operation.
In order to solve the above technical problems, the present invention provides a kind of range hood, comprising: casing;It is mounted in the casing Blower, the blower have air inlet and air outlet;Further include: the guide duct being mounted in the casing, the guide duct With air inlet and air outlet, the air outlet of the guide duct is connected in the air inlet of the blower;The tube wall of the guide duct On be provided with noise reduction micropore.
Optionally, the blower has spiral case, is provided with noise reduction micropore on the surface of the spiral case.
Optionally, further includes: outer guide duct, the outer guide duct are mounted in the casing and are set in the wind-guiding Pipe is outer;Noise reduction micropore is provided on the tube wall of the outer guide duct.
Optionally, further includes: multiple deflectors, the deflector are mounted in the guide duct;The table of the deflector Noise reduction micropore is provided on face.
Optionally, further includes: multiple first thin plates, first thin plate are mounted in the guide duct and are located at described The lower section of deflector;Noise reduction micropore is provided on the surface of first thin plate.
Optionally, the casing includes: upper housing, and the upper housing has air inlet and air outlet, the blower and institute Guide duct is stated to be mounted in the upper housing;Lower case, the lower case have right and left air inlet and air outlet, the upper housing Air inlet be connected in the air outlet of the lower case.
Optionally, further includes: be mounted on the intracorporal draught fan partition plate of the upper casing, the draught fan partition plate is by the blower and institute Guide duct is stated to separate in the two chambers of the upper housing.
Optionally, the lower case includes: left inlet section, is provided with left air inlet on the left inlet section;Right inlet section, Right air inlet is provided on the right inlet section;Outlet section is provided with air outlet on the outlet section, and the outlet section is located at institute State between left inlet section and the right inlet section, the cavity of the outlet section respectively with the cavity of the left inlet section and the right side The cavity of inlet section is connected to.
Optionally, further includes: the left discharge pipe and right discharge pipe being mounted in the outlet section, the left discharge pipe difference It is connected the cavity and the air outlet in the left inlet section, the right discharge pipe is connected respectively in the cavity of the right inlet section With the air outlet;Noise reduction micropore is provided on the tube wall of the left discharge pipe and the right discharge pipe.
Optionally, threeway discharge pipe is installed, the threeway discharge pipe is connected respectively in institute in the cavity of the outlet section State the cavity of left inlet section, the cavity and the air outlet of the right inlet section;It is provided on the tube wall of the threeway discharge pipe Noise reduction micropore.
Optionally, further includes: multiple second thin plates, second thin plate are mounted in the threeway discharge pipe;Described Noise reduction micropore is provided on two thin plates.
Optionally, left blast pipe is installed, the left blast pipe is connected respectively in the left air inlet in the left inlet section The cavity of mouth and the outlet section;Noise reduction micropore is provided on the tube wall of the left blast pipe.
Optionally, right blast pipe is installed, the right blast pipe is connected respectively in the right air inlet in the right inlet section The cavity of mouth and the outlet section;Noise reduction micropore is provided on the tube wall of the right blast pipe.
Compared with prior art, technical solution of the present invention, which has the advantages that, provides a kind of range hood, packet Casing, blower and guide duct are included, blower and guide duct are mounted in casing.Wherein, blower and guide duct all have air inlet and The air outlet of air outlet, guide duct is connected in the air inlet of blower.After blower is started to work, oil smoke enters the air inlet of guide duct Mouthful, enter in blower by the air outlet of guide duct, is finally expelled in common conduit by blower.Due on the tube wall of guide duct It is provided with a large amount of noise reduction micropore, it is micro- that the noise that range hood operation generates passes through the noise reduction that can be appeared on guide duct when guide duct Hole, noise repeatedly reflect to and fro in the space between the tube wall and casing of guide duct, can weaken by multiple reflections noise, To achieve the effect that smoking machine noise reduction.
Detailed description of the invention
Fig. 1 is the perspective view of the range hood of first embodiment of the invention;
Fig. 2 is the intracorporal side perspective view of upper casing of the range hood in Fig. 1;
Fig. 3 is the intracorporal scheme of installation of upper casing of the range hood in Fig. 1;
Fig. 4 is the stereoscopic schematic diagram of the lower case of the range hood in Fig. 1;
Fig. 5 is the perspective view of the range hood of second embodiment of the invention;
Fig. 6 is the side perspective view of the range hood in Fig. 5;
Fig. 7 is the scheme of installation of the intracorporal connector of range hood lower casing in Fig. 5;
Fig. 8 is the front perspective view of the range hood of third embodiment of the invention;
Fig. 9 is the stereoscopic schematic diagram of the lower case of the range hood in Fig. 8.
1- range hood, 10- upper housing, first of 101- upper housing, second of 102- upper housing, 10a- upper housing Air intake vent, the exhaust outlet of 10b- upper housing, 11- blower, 111- spiral case, the air inlet of 11a- blower, the outlet air of 11b- blower Mouthful, 12- guide duct, the air inlet of 12a- guide duct, the air outlet of 12b- guide duct, the outer guide duct of 13-, 14- deflector, 15- First thin plate, 16- draught fan partition plate, the opening of 161- draught fan partition plate, 17- annular coaming plate, the under shed of 17a- annular coaming plate, 17b- The upper opening of annular coaming plate, 18- third thin plate, 20- lower case, 20a- air intake surface, 20b- outlet air surface, the left inlet section 201-, The right inlet section 202-, the outlet section 203-, the left blast pipe of 21-, the right blast pipe of 22-, the left discharge pipe of 231-, the right discharge pipe of 232-, 23- Threeway discharge pipe, the second thin plate of 24-, the left air inlet opening of 201a-, the right air inlet opening of 202a-, 203b- outlet air opening, 21c- are left Between hole, the right interstitial hole of 22c-, 30- casing, 31- first partition, 32- second partition.
Specific embodiment
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this The specific embodiment of invention is described in detail.
First embodiment
Referring to figs. 1 to Fig. 3, the range hood 1 of a kind of low noise comprising casing 30, blower 11 and guide duct 12.Machine Shell 30 divides for upper housing 10 and lower case 20, and first partition 31 is equipped between upper housing 10 and lower case 20.In this implementation In example, blower 11 and guide duct 12 are all mounted in the upper housing 10 of casing 30, but blower and guide duct are not limited to pacify In upper housing, also it may be mounted in lower case.In order to preferably show the mounting structure in upper housing 10, in Fig. 3 It is middle to divide upper housing 10 for first 101 and second 102.
Upper housing 10 has air intake vent 10a and exhaust outlet 10b.Blower 11 has air inlet 11a and air outlet 11b, blower Air outlet 11b alignment upper housing 10 exhaust outlet 10b.Guide duct 12 has air inlet 12a and air outlet 12b, guide duct 12 Air inlet 12a alignment upper housing 10 air intake vent 10a, the air outlet 12b of guide duct 12 is connected in the air inlet of blower 11 11a.When the blower 11 of range hood 1 works, the oil smoke being inhaled into enters guide duct 12 by the air inlet 12b of guide duct 12 It is interior, then enter in blower 11 by guide duct 12, is most expelled to the outside of upper housing 10 through the air outlet 11b of blower 11 afterwards.
Wherein, a large amount of noise reduction micropore is provided on the tube wall of guide duct 12.When range hood 1 is run, the noise of oil smoke When by guide duct 12, noise can appear the noise reduction micropore on guide duct 12, tube wall and upper housing 10 of the noise in guide duct 12 Between space in repeatedly reflect to and fro, can weaken by multiple reflections noise, to reach the effect to 1 noise reduction of smoking machine Fruit.
Referring to figs. 2 and 3, range hood 1 further includes the draught fan partition plate 16 being mounted in upper housing 10, and draught fan partition plate 16 will Upper housing 11 is divided into two chambers, and blower 11 and guide duct 12 are located in two chambers.Have one in draught fan partition plate 16 Opening 161, the air inlet 11a of blower 11 and the air outlet 12b of guide duct 12 are respectively aligned to the opening 161 in draught fan partition plate 16.
With reference to Fig. 3, blower 11 has spiral case 111, is again provided with a large amount of noise reduction micropore on the surface of spiral case 111.? The noise that blower 11 generates when working can be through the noise reduction micropore on the surface of spiral case 111, between spiral case 111 and upper housing 10 Space in roundtrip, can weaken by multiple reflections noise, to achieve the effect that noise reduction.
Outer guide duct 13 is also equipped in upper housing 10, outer guide duct 13 is set in outside guide duct 12.Outer guide duct 13 Tube wall on be provided with a large amount of noise reduction micropore.After the noise of oil smoke appears the noise reduction micropore of guide duct 12, there is partial noise Roundtrip in space between guide duct 12 and outer guide duct 13 also has the noise reduction that partial noise appears outer guide duct 13 Micropore is turned over back and forth in the space between outer guide duct 13 and upper housing 10.Single wind-guiding is used using two layers of guide duct ratio Pipe can be improved noise reduction effect.
Deflector 14 is installed in guide duct 12, the oil smoke in the dispersion sucking guide duct 1 of deflector 14 avoids oil smoke from existing The middle part of guide duct 1 is concentrated and the situation of the two sides rareness of guide duct 1, so that oil smoke is uniform to the generation of wind deflector 12 pressure.Its In, it is provided with a large amount of noise reduction micropore on the surface of each deflector 14, when the noise of oil smoke passes through deflector 14, penetrates Noise reduction micropore on deflector 14 roundtrip between adjacent deflector 14.In the present embodiment, three pieces of water conservancy diversion have been used Plate 14 is mounted in guide duct 12, and greater number of deflector also can be used in guide duct in other embodiments.
The first thin plate 15 is also equipped in guide duct 12, and the first thin plate 15 is located at the lower section of deflector 14.In oil When cigarette enters guide duct 12 from the air inlet 12a of guide duct 12, oil smoke pass through first formed between adjacent first thin plate 15 it is narrow Narrow passage can lower the speed of oil smoke, and oil smoke is avoided to generate impact to guide duct 12.Wherein, each the first thin plate 15 A large amount of noise reduction micropore is provided on surface, when the noise of oil smoke passes through the first thin plate 15, through disappearing on the first thin plate 15 Sound micropore roundtrip between the first adjacent thin plate 15.In the present embodiment, mutually flat between the first adjacent thin plate 15 Row, and the surface of the first thin plate 15 is curved surface, and cross section is " S " type.Noise is in the first thin plate for passing through " S " type cross section When 15, meeting multiple reflections on " S " type surface can play better noise reduction effect.In other embodiments, the first thin plate it Between can not be parallel to each other, the surface of the first thin plate may be plane.
With reference to Fig. 2 and Fig. 4, casing 30 is divided to for two parts, including upper housing 10 and lower case 20.Upper housing 10 have into Air port 10a and exhaust outlet 10b.There is lower case 20 air intake surface 20a and outlet air surface 20b, air intake surface 20a to be used for towards generation oil smoke Kitchen range, and outlet air surface 20b with upper housing 10 for being attached;There is left air inlet opening 201a and the right side on air intake surface 20a Outlet air opening 202a has outlet air opening 203b on outlet air surface 20b, and wherein the air intake vent 10a of upper housing 10 is connected in lower casing The outlet air opening 203b of body 20.In the present embodiment, the outlet air surface 20b of lower case 20 is parallel to the horizontal plane, and air intake surface 20a is in water Plane is at an angle.
After the start-up operation of blower 1, oil smoke is sucked by left air inlet opening 201a or right air inlet opening 202a, via outlet air The 203b outflow that is open enters in the guide duct 12 of upper housing 10, then enters in blower 11 by guide duct 12, finally by blower 11 are expelled to the outside of range hood 1 through the air outlet 11b of upper housing 11.
It continues to refer to figure 1 and combines with reference to Fig. 4, lower case 20 includes left inlet section 201, right inlet section 202 and outlet section 203.Wherein, left air inlet opening 201a is provided on left inlet section 201;Right air inlet opening 202a is provided on right inlet section 202; Between left inlet section 201 and right inlet section 202, the cavity of outlet section 203 passes through left interstitial hole 21c and a left side for outlet section 203 The cavity of inlet section 201 is connected to, and is connected to by right interstitial hole 22c with the cavity of right inlet section 202, is provided on outlet section 203 Outlet air opening 203b.
Be also equipped with left discharge pipe 231 and right discharge pipe 232 in outlet section 203, one end linking of left discharge pipe 231 in Left interstitial hole 21c between left inlet section 201 and outlet section 203, the other end are connected the outlet air opening 203b in outlet section 203, Oil smoke enters from left interstitial hole 21c, flows out to upper housing 10 through outlet air opening 203b.Correspondingly, the both ends of right discharge pipe 232 point It Xian Jie not be in the outlet air of right interstitial hole 22c and air outlet 203 between right inlet section 202 and outlet section 203 opening 203b, oil smoke Enter from right interstitial hole 22c, flows out to upper housing 10 through outlet air opening 203b.
Wherein, a large amount of noise reduction micropore is provided on left discharge pipe 231 and the tube wall of right discharge pipe 232.In making an uproar for oil smoke When sound is entered behind outlet section 203 by left discharge pipe 231 and right discharge pipe 232, noise can appear left discharge pipe 231 and right outlet air Noise reduction micropore on pipe 232, noise left discharge pipe 231, right discharge pipe 232 tube wall and outlet section 203 between space in It repeatedly reflects to and fro, to achieve the effect that noise reduction.
In addition, being equipped with left blast pipe 21 in left inlet section 201, the both ends of left blast pipe 21 are connected respectively in left air inlet The left interstitial hole 21c being open between 201a and left inlet section 201 and outlet section 203;Right air inlet is installed in right inlet section 202 Pipe 22, the right centre that the both ends of right blast pipe 22 are open between 202a and right inlet section 202 and outlet section 203 right air inlet respectively Hole 22c connection.
Wherein, a large amount of noise reduction micropore is provided on the tube wall of left blast pipe 21 and right blast pipe 22.In the noise of oil smoke When can pass through left blast pipe 21 or right blast pipe 22 after into left inlet section 201 perhaps right inlet section 202, noise can be appeared Noise reduction micropore on left blast pipe 21 or right blast pipe 22, space of the noise between left blast pipe 21 and left inlet section 201 Or repeatedly reflected to and fro in the space between right blast pipe 22 and right inlet section 202, to achieve the effect that noise reduction.
Second embodiment
With reference to Fig. 5 to Fig. 6, in the present embodiment, a kind of lower case 20 of the range hood 2 of low noise includes left inlet section 201, right inlet section 202 and outlet section 203.Threeway discharge pipe 23 is installed in outlet section 203, the first of threeway discharge pipe 23 Air inlet port is connected left interstitial hole 21c between left inlet section 201 and outlet section 203, the linking of the second air inlet port in the right side into Right interstitial hole 22c between wind portion 202 and outlet section 203, outlet port are connected the outlet air opening 203b in outlet section 203.Oil Cigarette enters in threeway discharge pipe 23 from left interstitial hole 21c or right interstitial hole 22c, the outlet air opening 203b stream through outlet section 230 Out to upper housing 10.
In addition, being also equipped with the second thin plate 24 in threeway discharge pipe 23, wherein on the surface of each the second thin plate 24 It is provided with a large amount of noise reduction micropore, when the noise of oil smoke passes through the second thin plate 24, through the noise reduction micropore on the second thin plate 24 The roundtrip between the second adjacent thin plate 24.In the present embodiment, it is parallel to each other between the second adjacent thin plate 24, and The surface of second thin plate 24 is plane.In other embodiments, can not be parallel to each other between the second thin plate, the table of the second thin plate Face may be the curved surface that cross section is " S " type.
With reference to Fig. 7 and Fig. 5 is combined, connection is installed between the outlet port of threeway discharge pipe 23 and outlet air opening 203b Part, connector include second partition 32, annular coaming plate 17 and multiple third thin plates 18.Second partition 32 is mounted on threeway discharge pipe Between 23 outlet port and annular coaming plate 17.Second partition 32 has an opening 32a, it is made to be directed at threeway discharge pipe 23 Outlet port.There is annular coaming plate 17 upper opening 17b and under shed 17a, under shed 17a to be directed at the opening of second partition 32 The air intake vent 10a of 32a, upper opening 17b alignment upper housing 10.Third thin plate 18 is mounted on annular coaming plate 17 in parallel to each other It is internal.Wherein, it is provided with a large amount of noise reduction micropore on the peripheral wall of annular coaming plate 17 and the surface of third thin plate 18, noise is passing through When crossing annular coaming plate 17 and third thin plate 18, the noise reduction micropore on annular coaming plate 17 and third thin plate 18 can be appeared, noise is in ring It is repeatedly reflected to and fro in the space of shape coaming plate 17, to achieve the effect that noise reduction.
3rd embodiment
With reference to Fig. 8 to Fig. 9, in the present embodiment, a kind of casing 30 of the range hood 3 of low noise is divided to for two parts, Including upper housing 10 and lower case 20.There is lower case 20 air intake surface 20a and outlet air surface 20b, air intake surface 20a to be used for towards generation The kitchen range of oil smoke, and outlet air surface 20b with upper housing 10 for being attached.There is left air inlet opening 201a on air intake surface 20a With right outlet air be open 202a, on outlet air surface 20b have outlet air be open 203b, wherein upper housing 10 air intake vent 10a linking in The outlet air opening 203b of lower case 20.In the present embodiment, the outlet air surface 20b of lower case 20 is parallel to the horizontal plane, air intake surface 20a Also it is parallel to the horizontal plane.
In the present invention, each embodiment uses progressive literary style, and the difference of emphasis description and previous embodiment is each to implement Same section in example is referred to previous embodiment.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (13)

1. a kind of range hood (1), comprising:
Casing (30);
The blower (11) being mounted in the casing (30), the blower (11) have air inlet (11a) and air outlet (11b);
It is characterized in that,
Further include: the guide duct (12) being mounted in the casing (30), the guide duct (12) have air inlet (12a) and go out The air outlet (12b) in air port (12b), the guide duct is connected in the air inlet (11a) of the blower;
Noise reduction micropore is provided on the tube wall of the guide duct (12).
2. range hood as described in claim 1, which is characterized in that the blower (11) has spiral case (111), the spiral case (111) noise reduction micropore is provided on surface.
3. range hood as described in claim 1, which is characterized in that further include: outer guide duct (13), the outer guide duct (13) it is mounted in the casing (30) and is set in the guide duct (12) outside;It is set on the tube wall of the outer guide duct (13) It is equipped with noise reduction micropore.
4. range hood as described in claim 1, which is characterized in that further include: multiple deflectors (14), the deflector (14) it is mounted in the guide duct (12);Noise reduction micropore is provided on the surface of the deflector (14).
5. range hood as claimed in claim 4, which is characterized in that further include: multiple first thin plates (15), described first is thin Plate (15) is mounted on the lower section in the guide duct (12) and being located at the deflector (14);The table of first thin plate (15) Noise reduction micropore is provided on face.
6. range hood as described in claim 1, which is characterized in that the casing (30) includes:
Upper housing (10), the upper housing (10) have air intake vent (10a) and exhaust outlet (10b), the blower (11) and described Guide duct (12) is mounted in the upper housing (10);
Lower case (20), the lower case (20) has left and right air inlet opening (201a, 202a) and outlet air opening (203b), described Air intake vent (10a) linking of upper housing is open (203b) in the outlet air of the lower case.
7. range hood as claimed in claim 6, which is characterized in that further include: the wind being mounted in the upper housing (10) Machine partition (16), the draught fan partition plate (16) separate the blower (11) and the guide duct (12) in the upper housing (10) Two chambers in.
8. range hood as claimed in claim 7, which is characterized in that the lower case (20) includes:
Left inlet section (201) is provided with left air inlet opening (201a) on the left inlet section;
Right inlet section (202) is provided with right air inlet opening (202a) on the right inlet section;
Outlet section (203), outlet air opening (203b) is provided on the outlet section (203), and the outlet section (203) is located at described Between left inlet section (201) and the right inlet section (202), the cavity of the outlet section (203) respectively with the left inlet section (201) cavity is connected to the cavity of the right inlet section (202).
9. range hood as claimed in claim 8, which is characterized in that further include: it is mounted on the left side in the outlet section (203) Discharge pipe (231) and right discharge pipe (232), the left discharge pipe (231) are connected respectively in the cavity of the left inlet section (201) It is open (203b) with the outlet air, the right discharge pipe (232) is connected respectively in the cavity of the right inlet section (202) and described Outlet air is open (203b);Noise reduction micropore is provided on the tube wall of the left discharge pipe (231) and the right discharge pipe (232).
10. range hood as claimed in claim 8, which is characterized in that be equipped with threeway in the cavity of the outlet section (203) Discharge pipe (23), the threeway discharge pipe (23) are connected the cavity in the left inlet section (201), the right inlet section respectively (202) cavity and outlet air opening (203b);Noise reduction micropore is provided on the tube wall of the threeway discharge pipe (23).
11. range hood as claimed in claim 10, which is characterized in that further include: multiple second thin plates (24), described second Thin plate (24) is mounted in the threeway discharge pipe (23);Noise reduction micropore is provided on second thin plate (24).
12. the range hood as described in any one of claim 9-11, which is characterized in that peace in the left inlet section (201) Equipped with left blast pipe (21), the left blast pipe (21) is connected respectively in the left air inlet opening (201a) and the outlet section (203) cavity;Noise reduction micropore is provided on the tube wall of the left blast pipe (21).
13. the range hood as described in any one of claim 9-11, which is characterized in that peace in the right inlet section (202) Equipped with right blast pipe (22), the right blast pipe (22) is connected respectively in the right air inlet opening (202a) and the outlet section (203) cavity;Noise reduction micropore is provided on the tube wall of the right blast pipe (22).
CN201710504580.1A 2017-06-27 2017-06-27 Range hood Pending CN109140547A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201710504580.1A CN109140547A (en) 2017-06-27 2017-06-27 Range hood
EP18176223.8A EP3421891B1 (en) 2017-06-27 2018-06-06 Cooker hood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710504580.1A CN109140547A (en) 2017-06-27 2017-06-27 Range hood

Publications (1)

Publication Number Publication Date
CN109140547A true CN109140547A (en) 2019-01-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710504580.1A Pending CN109140547A (en) 2017-06-27 2017-06-27 Range hood

Country Status (2)

Country Link
EP (1) EP3421891B1 (en)
CN (1) CN109140547A (en)

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