CN202432030U - Check valve of range hood - Google Patents
Check valve of range hood Download PDFInfo
- Publication number
- CN202432030U CN202432030U CN2011205026207U CN201120502620U CN202432030U CN 202432030 U CN202432030 U CN 202432030U CN 2011205026207 U CN2011205026207 U CN 2011205026207U CN 201120502620 U CN201120502620 U CN 201120502620U CN 202432030 U CN202432030 U CN 202432030U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve blocks
- blocks
- range hood
- limit muscle
- 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.)
- Expired - Fee Related
Links
- 210000003205 muscle Anatomy 0.000 claims abstract description 33
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000000926 separation method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- UJCHIZDEQZMODR-BYPYZUCNSA-N (2r)-2-acetamido-3-sulfanylpropanamide Chemical class CC(=O)N[C@@H](CS)C(N)=O UJCHIZDEQZMODR-BYPYZUCNSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to a range hood's check valve, including two valve blocks of valve body and left and right symmetry, wherein the lower extreme of valve block is equipped with the pivot be equipped with the pivot hole on the internal face of the air outlet of valve body, the pivot is installed in the pivot hole, is provided with spacing muscle on the valve body inner wall, it is located the top of pivot to go up spacing muscle be equipped with down spacing muscle on the inner wall of two left and right valve blocks respectively, the lower spacing muscle of two left and right valve blocks is located the both sides of last spacing muscle respectively and can cooperate mutually and make the valve block rotate spacingly, its characterized in that the convex arc form is personally submitted to the outward appearance of valve block, and when the lower spacing muscle of two left and right valve blocks cooperates with last spacing muscle, two left and right valve blocks constitute the streamline form of blunt nosed pointed tail. The check valve of the range hood has the advantages of ingenious design, simple structure, low cost, small resistance of the valve plate, good automatic resetting performance, and the like.
Description
Technical field
The utility model relates to a kind of safety check of range hood, and is especially technological to the improvement of check valve structure.
Background technique
Range hood has become the indispensable household electric appliance in city dweller kitchen, often is provided with safety check at the exhaust outlet place of range hood, and its main effect is to prevent that oil smoke from pouring in down a chimney.At present, the check valve structure of cigarette machine product has generally included valve body and left and right two valve blocks on the market, and valve block is generally semicircular slab construction; Valve block is provided with rotating shaft, and valve body is provided with rotary shaft hole, and valve block can freely rotate in the rotary shaft hole of valve body through rotating shaft; The valve interior wall on rotating shaft top is provided with the upper limit muscle; On the valve interior wall of rotating shaft both sides, also be symmetrically arranged with the lower limit muscle, lower limit and upper limit played in the rotation of valve block, shown in Fig. 1 to 4.When the cigarette machine turned round, valve block opened to the upper limit position under the effect of wind-force.The resistance of this scheme valve block is little, is that valve block is difficult under self counterweight, returning the lower limit position automatically when the cigarette machine quits work but a very big defective is arranged, thereby does not have the effect of safety check.In order to solve the deficiency of this scheme, conventional way is that protruding open angle with the minimizing valve block is set on valve block rotating shaft top.Produce a large amount of flow separation in the time of can causing air-flow through valve block so again, cause the flow losses increasing and the noise that flows to increase.In order to overcome above-mentioned two problems simultaneously; Chinese invention patent CN02112348.9 has proposed a kind of scheme that drives the valve block rotation through drive unit; Though this scheme can solve above two problems; But can bring the complicacy of structure and the significantly lifting of cost, in case and drive unit break down and just possibly cause the cigarette machine can't proper functioning.
Summary of the invention
The purpose of the utility model be to consider the problems referred to above and provide a kind of simple in structure, cost is low, and the valve block resistance is little again can fine automatically reset range hood safety check.
The technological scheme of the utility model is: the safety check of the range hood of the utility model; Include two valve blocks of valve body and left and right symmetry, wherein be provided with rotating shaft, on the internal face of the exhaust outlet of said valve body, be provided with rotary shaft hole in the lower end of said valve block; Said rotating shaft is installed in the rotary shaft hole; Valve interior wall is provided with the upper limit muscle, and said upper limit muscle is positioned at the top of rotating shaft, on the inwall of said left and right two valve blocks, is respectively equipped with the lower limit muscle; The lower limit muscle of said left and right two valve blocks lays respectively at the both sides of upper limit muscle and can work in coordination and makes the valve block rotary spacing; The outer surface that it is characterized in that said valve block is convex arc shaped, and when the lower limit muscle of left and right two valve blocks cooperated with the upper limit muscle, left and right two valve blocks constituted the fairing shape of blunt nosed fine stern.
The middle section that said left and right two valve blocks constitute the fairing of blunt nosed fine stern is shaped as symmetrical airfoil.
The maximum ga(u)ge of the symmetrical airfoil of said left and right two valve blocks is a, and the chord length of aerofoil profile is L, and the ratio range of maximum ga(u)ge and chord length is 0.12＜a/L＜0.25.
The internal surface of said left and right two valve blocks also is provided with the configuration stiffening rib, and the height H of configuration stiffening rib is less than the maximum ga(u)ge of the outer convex globoidal of valve block, i.e. H＜a/2.
The utility model advantage compared with prior art is: the flow separation that the fairing design of left and right two valve blocks produces in the time of significantly reducing the airflow passes valve block, thus significantly reduce flow losses and reduce the noise that flows.The design of left and right two valve blocks of convex arc type makes the center of gravity of valve block farther from rotating shaft, thereby can realize better resetting.Its design is ingenious, simple in structure, with low cost, and the resistance of valve block is little, can fine automatically reset range hood safety check.
Description of drawings
Fig. 1 is the structural representation of conventional safety check;
Fig. 2 is conventional safety check valve block structural representation of (opening angle is 90 degree) when opening;
Fig. 3 is conventional safety check valve block structural representation of (opening angle is less than 90 degree) when opening;
Fig. 4 is the flow principles figure of air flow stream when crossing conventional safety check valve block (opening angle less than 90 degree);
Fig. 5 is the utility model embodiment's a structural representation;
Fig. 6 is the structural representation of the utility model embodiment's safety check valve block when opening;
The schematic diagram of the conventional aerofoil profile of the utility model among Fig. 7;
Fig. 8 is the flow principles figure of this air flow stream when crossing fairing.
Embodiment
To combine accompanying drawing and embodiment that the utility model is done further detailed description below:
Like Fig. 5,6, shown in 7; A kind of safety check of range hood; Include two valve blocks 2 of valve body 1 and left and right symmetry, wherein be provided with rotating shaft 21, on the internal face of the exhaust outlet 11 of said valve body 1, be provided with rotary shaft hole 12 in the lower end of said valve block 2; Said rotating shaft 21 is installed in the rotary shaft hole 12; Corresponding both sides are provided with two upper limit muscle 13 on valve body 1 inwall, and said upper limit muscle 13 is positioned at the top of rotating shaft 21, and corresponding both sides are respectively equipped with two lower limit muscle 23 on the inwall of said left and right two valve blocks 2; The lower limit muscle 23 of left and right two valve blocks 2 lays respectively at the both sides of upper limit muscle 13 and can work in coordination and makes valve block 2 rotary spacings; The utility model characteristics are that the outer surface of said valve block 2 is convex arc shaped, and when the lower limit muscle 23 of left and right two valve blocks 2 cooperated with upper limit muscle 13, left and right two valve blocks 2 constituted the fairing shape of blunt nosed fine stern.When the cigarette machine turned round, left and right two valve blocks 2 were opened under the effect of wind-force automatically, and when the lower limit muscle 23 on left and right two valve blocks 2 was run into upper limit muscle 13, left and right two valve blocks 2 were slack; When the cigarette machine quit work, left and right two valve blocks 2 automatically reset to the position of lower limit muscle 23 under self counterweight.During use, the flow separation that produces when the design of the fairing of left and right two valve blocks 2 can significantly reduce left and right two valve blocks 2 of airflow passes, thus significantly reduce flow losses and reduce the noise that flows.The design of left and right two valve blocks 2 of convex arc type makes the center of gravity of valve block farther from rotating shaft, thereby can realize better resetting.
In the present embodiment, the middle section of the fairing of the blunt nosed fine stern of said left and right two valve blocks 2 formations is shaped as symmetrical airfoil.The maximum ga(u)ge of the symmetrical airfoil of said left and right two valve blocks 2 is a, and the chord length of aerofoil profile is L, and the ratio range of maximum ga(u)ge and chord length is 0.12＜a/L＜0.25.The conventional symmetrical airfoil of being selected for use is low speed aerofoil profiles such as NACA series, C-4, BC-6, A40.
In the present embodiment, the internal surface of said left and right two valve blocks 2 also is provided with configuration stiffening rib 22, and the height H of configuration stiffening rib is less than the maximum ga(u)ge of valve block 2 outer convex globoidals, i.e. H＜a/2.The effect that increases valve block intensity had both been played in the effect of configuration stiffening rib, can play the effect that better realization valve block resets again.
Claims (4)
1. the safety check of a range hood; Include two valve blocks (2) of valve body (1) and left and right symmetry; Wherein be provided with rotating shaft (21) in the lower end of said valve block (2); On the internal face of the exhaust outlet (11) of said valve body (1), be provided with rotary shaft hole (12), said rotating shaft (21) is installed in the rotary shaft hole (12), and valve body (1) inwall is provided with upper limit muscle (13); Said upper limit muscle (13) is positioned at the top of rotating shaft (21); On the inwall of said left and right two valve blocks (2), be respectively equipped with lower limit muscle (23), the lower limit muscle (23) of said left and right two valve blocks (2) lays respectively at the both sides of upper limit muscle (13) and can work in coordination and makes valve block (2) rotary spacing, it is characterized in that the outer surface of said valve block (2) is convex arc shaped; When the lower limit muscle (23) of left and right two valve blocks (2) and upper limit muscle (13) when cooperating, left and right two valve blocks (2) constitute the fairing shape of blunt nosed fine stern.
2. the safety check of a kind of range hood according to claim 1 is characterized in that the middle section of the fairing of the blunt nosed fine stern of said left and right two valve blocks (2) formation is shaped as symmetrical airfoil.
3. the safety check of a kind of range hood according to claim 2, the maximum ga(u)ge that it is characterized in that the symmetrical airfoil of said left and right two valve blocks (2) is a, and the chord length of aerofoil profile is L, and the ratio range of maximum ga(u)ge and chord length is 0.12＜a/L＜0.25.
4. the safety check of a kind of range hood according to claim 1 and 2; The internal surface that it is characterized in that said left and right two valve blocks (2) also is provided with configuration stiffening rib (22); The height H of configuration stiffening rib is less than the maximum ga(u)ge of the outer convex globoidal of valve block (2), i.e. H＜a/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205026207U CN202432030U (en) | 2011-12-07 | 2011-12-07 | Check valve of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205026207U CN202432030U (en) | 2011-12-07 | 2011-12-07 | Check valve of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432030U true CN202432030U (en) | 2012-09-12 |
Family
ID=46781476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205026207U Expired - Fee Related CN202432030U (en) | 2011-12-07 | 2011-12-07 | Check valve of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432030U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468838A (en) * | 2018-03-27 | 2018-08-31 | 广东美的厨房电器制造有限公司 | Flute check valve and flue system with it |
| CN108591553A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel bleeder valve |
| CN109667969A (en) * | 2017-10-17 | 2019-04-23 | 安徽谷王烘干机械有限公司 | Hot-blast stove and its flue gas explosion-protection equipment |
| CN111706680A (en) * | 2020-06-23 | 2020-09-25 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve and range hood |
-
2011
- 2011-12-07 CN CN2011205026207U patent/CN202432030U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667969A (en) * | 2017-10-17 | 2019-04-23 | 安徽谷王烘干机械有限公司 | Hot-blast stove and its flue gas explosion-protection equipment |
| CN108468838A (en) * | 2018-03-27 | 2018-08-31 | 广东美的厨房电器制造有限公司 | Flute check valve and flue system with it |
| CN108468838B (en) * | 2018-03-27 | 2024-04-12 | 广东美的厨房电器制造有限公司 | Flue check valve and flue system with same |
| CN108591553A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel bleeder valve |
| CN111706680A (en) * | 2020-06-23 | 2020-09-25 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve and range hood |
| CN111706680B (en) * | 2020-06-23 | 2022-09-23 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve and range hood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202432030U (en) | Check valve of range hood | |
| CN203036730U (en) | Double-opening type range hood | |
| CN205208685U (en) | Take range hood of wind channel switching function | |
| CN204404472U (en) | Air-supply arrangement and air-conditioning thereof | |
| CN101986042A (en) | Range hood with left and right opening and closing-adjustable air inlet nets | |
| CN101701726A (en) | Fume exhaust fan | |
| CN106705172B (en) | A kind of louvre blade linkage switching mechanism of smoke exhaust ventilator | |
| CN206520755U (en) | A kind of electromagnetism adhesive rotary type bionic flapping-wing device | |
| CN107461835A (en) | The air outlet grate of outdoor machine of air-conditioner | |
| CN102913973B (en) | Range hood outlet housing capable of assisting in quickly opening valve plates | |
| CN206656404U (en) | A kind of louvre blade linkage switching mechanism of smoke exhaust ventilator | |
| CN207268469U (en) | Three-dimensional air intake kitchen ventilator | |
| CN203682252U (en) | Counter flow type cooler discharging mechanism | |
| CN208221733U (en) | A kind of gate valve of accurate control water flow | |
| CN204891461U (en) | Purify laminar flow hood | |
| CN203223394U (en) | Negative-pressure fan | |
| CN208606166U (en) | A kind of burner | |
| CN207325091U (en) | A kind of suction-type centrifuge | |
| CN208075300U (en) | Outdoor gas water heater | |
| CN206669827U (en) | A kind of smoke exhaust ventilator with oil baffle | |
| CN203231484U (en) | Air-out panel of indoor set of air conditioner | |
| CN205897281U (en) | Cigarette machine with air purification | |
| CN206973853U (en) | A kind of wall-hanging air conditioner on-hook air outlet structure | |
| CN202811536U (en) | Exhaust fan with louvre blades | |
| CN206273977U (en) | A kind of combined type window frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee before: Midea Group |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20201207 |