CN204006222U - A kind of rectification acceleration dish structure used for range hood - Google Patents
A kind of rectification acceleration dish structure used for range hood Download PDFInfo
- Publication number
- CN204006222U CN204006222U CN201420417171.XU CN201420417171U CN204006222U CN 204006222 U CN204006222 U CN 204006222U CN 201420417171 U CN201420417171 U CN 201420417171U CN 204006222 U CN204006222 U CN 204006222U
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- CN
- China
- Prior art keywords
- cowling panel
- acceleration
- accelerated
- range hood
- acceleration dish
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Abstract
The utility model discloses a kind of rectification acceleration dish structure used for range hood, comprise the cowling panel that just air inlet of the exhaust fume collecting hood to range hood arranges, it is characterized in that, described cowling panel is provided with acceleration dish towards a side of exhaust fume collecting hood, on described acceleration dish, be formed with at least two accelerated passages that oil smoke is accelerated, described accelerated passage dwindles towards central authorities' extension and sectional area gradually from the periphery of described cowling panel.Form rectification acceleration dish structure by adding acceleration dish at cowling panel with respect to a side of exhaust fume collecting hood, form the radially oil smoke accelerated passage of undergauge, oil smoke shunting is absorbed, and reducing accelerates, in cowling panel inner peripheral, formed a stable negative pressure ring district with respect to periphery, the oil smoke that continues to rise is dynamically constantly held together collection and the accelerated blower fan that sucks, and makes range hood reach best, maximum periphery and stablizes and hold together cigarette smoking effect, can make kitchen smell degree be down to minimum.
Description
Technical field
The utility model relates to a kind of range hood, especially a kind of rectification acceleration dish structure used for range hood.
Background technology
A rigid index of clean kitchen environment is smell degree, and what smell degree can be used for weighing range hood holds together cigarette smoking effect.Existing conventional range hood is arranged to form concave cavity in exhaust fume collecting hood conventionally, is provided with air inlet and screen pack on exhaust fume collecting hood, and the oil smoke that blower fan absorbs, after screen pack, enters from air inlet.This mode fume-exhausting is intuitively effective, but in the process of fume-exhausting, has not only siphoned away too much grease and condiment in pot, has increased the loss of heat energy, and returning range hood has increased the burden of oil strain and contamination.
For overcoming above-mentioned drawback, and that improves range hood holds together cigarette smoking effect, current conventional solution is, at the air inlet place of the exhaust fume collecting hood of range hood, smoke deflector is set, as the applicant's the application number Chinese patent that is 200920115928.9, a kind of range hood with smoke deflector is disclosed, the just air inlet setting to exhaust fume collecting hood and maintain predetermined spacing of smoke deflector, between smoke deflector and exhaust fume collecting hood, form the oil smoke passage passing through for oil smoke, the spacing between smoke deflector and exhaust fume collecting hood reduces gradually from outer circumferential air inlet direction; The disclosed a kind of range hood of Chinese patent that and for example the applicant's application number is 201220597117.9, the smoke deflector just the air inlet place of exhaust fume collecting hood being arranged comprises rotating left wing sheet and right flank sheet.
Above-mentioned range hood, by smoke deflector is set, divides oil smoke and inhales it, has expanded the bounds that holds together cigarette smoking, is convenient to form Venturi effect between smoke deflector and exhaust fume collecting hood, holds together oil smoke completely, is siphoned away by blower fan thereby can accelerate flowing of flue gas.But because the spacing distance each point between smoke deflector surrounding and exhaust fume collecting hood differs greatly, this makes oil smoke channel cross-section actively uncertain; And when the at once diffusion again thereupon from smoke deflector surrounding enters of oil smoke air-flow, static pressure rises sharply, it is extremely unstable that this makes the negative pressure of smoke deflector periphery hold together cigarette effect.
Utility model content
Technical problem to be solved in the utility model is the problem existing for above-mentioned prior art, and a kind of rectification acceleration dish structure used for range hood that improves border and hold together cigarette ability is provided.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of rectification acceleration dish structure used for range hood, comprise the cowling panel that just air inlet of the exhaust fume collecting hood to range hood arranges, it is characterized in that, described cowling panel is provided with acceleration dish towards a side of exhaust fume collecting hood, on described acceleration dish, be formed with at least two accelerated passages that oil smoke is accelerated, described accelerated passage dwindles towards central authorities' extension and sectional area gradually from the periphery of described cowling panel.
Forming the radially preferred mode of accelerated passage of undergauge is, described acceleration dish comprises multiple spaced apart acceleration pieces, described accelerated passage is formed on adjacent two and accelerates between piece, and each in two relative sides of adjacent two acceleration pieces is from described cowling panel periphery to the inside gradually to another inclination.Alternative, also can adopt the mode of offering groove on acceleration dish to form accelerated passage.
For making rectification acceleration dish structure have the best cigarette noise reduction equalization point that holds together, the side of at least two described acceleration pieces has different angles of inclination, and/or at least two described acceleration pieces have different height.
Compared with prior art, the utility model has the advantage of: form rectification acceleration dish structure by adding acceleration dish at cowling panel with respect to a side of exhaust fume collecting hood, form the radially oil smoke accelerated passage of undergauge, oil smoke shunting is absorbed, and reducing accelerates, due to the rising of dynamic pressure, the reduction of static pressure, in cowling panel inner peripheral, form a stable negative pressure ring district with respect to periphery, the oil smoke that continues to rise is dynamically constantly held together collection and the accelerated blower fan that sucks, make range hood reach best, maximum periphery is stablized and is held together cigarette smoking effect, can make kitchen smell degree be down to minimum, in addition increased the damping of air-flow, suitable damping is mated the noise reduction that can reach good with the blower fan of range hood.
Brief description of the drawings
Fig. 1 is the structural representation of rectification acceleration dish structure of the present utility model;
Fig. 2 is the cutaway view of the rectification acceleration dish structure of Fig. 1;
Fig. 3 is the decomposition texture schematic diagram of the rectification acceleration dish structure of Fig. 1;
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Referring to Fig. 1～Fig. 3, a kind of rectification acceleration dish structure used for range hood, applied range hood includes exhaust fume collecting hood 1, offers air inlet 11 on exhaust fume collecting hood 1, just to air inlet 11 and with exhaust fume collecting hood 1 interval be provided with cowling panel 2.
Cowling panel 2 is provided with acceleration dish 3 towards a side of exhaust fume collecting hood 1, this acceleration dish 3 comprises multiple spaced apart acceleration pieces 31, accelerate piece 31 and be arranged on the position near periphery on cowling panel 2, and two adjacent intervals of accelerating between piece 31 form the accelerated passage 4 (radially undergauge) towards central authorities' extension and the diminishing oil smoke of sectional area by cowling panel 2 peripheries, accelerated passage 4 has at least two, and these two are accelerated two relative sides 32 of piece 31 and tilted to opposite flank 32 gradually to the inside by cowling panel 2 peripheries.
The pass of flow Q, sectional area S and fluid velocity V is, Q=SV, and under the constant prerequisite of soot gas flow, sectional area S and fluid velocity V are inversely proportional to, and thus, the sectional area of accelerated passage 4 dwindles gradually, can be accelerated through the fluid of accelerated passage 4.
The demonstration of gas gross energy total head:
wherein P
gfor total head, P is static pressure, P
bfor dynamic pressure, V is speed, and ρ is gas density, and under the constant prerequisite of soot gas total head, in the time of speedup, dynamic pressure raises, and static pressure reduces, and forms stable negative pressure ring district.
When oil smoke is subject to rectification and attached wall while being directed to cowling panel 2 periphery, because accelerated passage 4 is undergauge radially, oil smoke is connected the blower fan of continuous acceleration from air inlet 11 inspiration range hoods.Due to the rising of dynamic pressure, the reduction of static pressure, in cowling panel 2 inner peripheral, formed a stable negative pressure ring district with respect to periphery, the oil smoke that continues to rise is dynamically constantly held together collection and the accelerated blower fan that sucks.Thereby rectification acceleration dish structure can make range hood reach best, maximum periphery to stablize and hold together cigarette smoking effect, can make kitchen smell degree be down to minimum.
Each accelerated passage 4 can have different acceleration, the angle of inclination of the side of each acceleration piece 31, accelerate piece the parameter such as height can be different, thereby can find the best cigarette noise reduction equalization point that holds together.In addition, between each accelerated passage 4, can be communicated with also and can isolate mutually.
Claims (3)
1. a rectification acceleration dish structure used for range hood, comprise the cowling panel (2) that just air inlet (11) of the exhaust fume collecting hood to range hood (1) arranges, it is characterized in that, described cowling panel (2) is provided with acceleration dish (3) towards a side of exhaust fume collecting hood (1), on described acceleration dish (3), be formed with at least two accelerated passages (4) that oil smoke is accelerated, described accelerated passage (4) dwindles towards central authorities' extension and sectional area gradually from the periphery of described cowling panel (2).
2. rectification acceleration dish structure used for range hood as claimed in claim 1, it is characterized in that, described acceleration dish (3) comprises multiple spaced apart acceleration pieces (31), described accelerated passage (4) is formed on adjacent two and accelerates between piece (31), and each in two relative sides (32) of adjacent two acceleration pieces (31) is from described cowling panel (2) periphery to the inside gradually to another inclination.
3. rectification acceleration dish structure used for range hood as claimed in claim 2, it is characterized in that, the side (32) of at least two described acceleration pieces (31) has different angles of inclination, and/or at least two described acceleration pieces (31) have different height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420417171.XU CN204006222U (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420417171.XU CN204006222U (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204006222U true CN204006222U (en) | 2014-12-10 |
Family
ID=52046218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420417171.XU Expired - Fee Related CN204006222U (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204006222U (en) |
-
2014
- 2014-07-25 CN CN201420417171.XU patent/CN204006222U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |