CN202253858U - Extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure - Google Patents
Extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure Download PDFInfo
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- CN202253858U CN202253858U CN2011202940140U CN201120294014U CN202253858U CN 202253858 U CN202253858 U CN 202253858U CN 2011202940140 U CN2011202940140 U CN 2011202940140U CN 201120294014 U CN201120294014 U CN 201120294014U CN 202253858 U CN202253858 U CN 202253858U
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- back taper
- negative pressure
- collecting hood
- annular
- venturi principle
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Abstract
The utility model relates to an extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure, which comprises a machine body; a fumes collecting hood which is used for gathering cooking fumes is arranged on the machine body; the fumes collecting hood is connected with the machine body and an inversed cone annular oil mesh set which is arranged in the fumes collecting hood; and an annular oil cup is arranged on the inversed cone annular oil mesh set. The beneficial effects are that the inversed cone annular oil mesh set is hidden in the fumes collecting hood, the oil dirt treatment process is hidden, and the risk that oil dirt on the oil mesh surface is blown off as the circulation speed is over-high when air in the environment is used can be avoided, so that the appearance of the whole machine is cleaner and neater.
Description
Technical field
The utility model relates to the remover apparatus of kitchen cooking flue gas, especially a kind of suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-.
Background technology
The suction structure of existing range hood is made up of body, exhaust fume collecting hood, oily net and lubricating cup mostly, and mostly common oil net is the oily net that four conical surfaces are formed, and the body air inlet that cooperates with it is quadrangle air port vertically upward, and is as shown in Figure 4.After the final assembly, oily net, lubricating cup expose visible.
The advantage of existing suction structure has: simple in structure, highly versatile, oil circuit are smooth and easy, but shortcoming also is conspicuous:
The one, inhale, in row's process to exhaust air rate and noise aid in treatment: existing structure is in the suction process; Oil smoke is discharged from the body top, in whole suction process in oily net filtration is drawn into the spiral case of body again; Can't be orderly through four conical surface institute air draught sources of oil net enter in the cabinet; The adsorbed mutual crossfire of wind regime meeting, the collision of each face cause the change of wind direction, and existing vertical body can't effectively solve collision, crossfire, backflow phenomenon when compiling.The increase that causes complete machine windage and wind when air draught to make an uproar directly has influence on the performance parameter such as exhaust air rate, noise of complete machine.
The 2nd, the complete machine outward appearance: oily net works to separate, collect greasy dirt, the aqueous vapor in the absorption oil smoke with lubricating cup in complete machine structure; Because existing structure restriction; Big heavy wool net and lubricating cup expose visible; Can't the spot processing procedure can't be hidden, so outward appearance can have a strong impact on user's mood, also seems quite unhygienic simultaneously.
The 3rd, the reliability of greasy dirt absorption: when the cigarette machine quit work, when excessive, the greasy dirt that is adsorbed on oily net surface had by the risk of blowing off, and causes secondary pollution like ambient air stream.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provides the venturi principle that utilizes of a kind of neat and tidy, good reliability to realize the suction structure of the range hood that negative pressure is mid-.
The utility model solves the technical scheme that its technical problem adopts: this suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-; Comprise body; Body is provided with the exhaust fume collecting hood of oil smoke; Exhaust fume collecting hood connects body and the oily net group of back taper annular, and the oily net of back taper annular is mounted in the exhaust fume collecting hood, and the annular oily net group of back taper is provided with annular lubricating cup.
As preferably, the outer selvage wall of the oily net group of back taper annular is that angle is the back taper of α, and the wire side of the oily net group of back taper annular also is a back taper, and the angle of wire side and vertical direction is β, and the inlet scoop of body has the angle γ of an expansion.Optimal case through experiment is: α is 6 °, and β is 60 °, and γ is 8 °.
The effect that the utility model is useful is: the oily net group of the utility model back taper annular is hidden in the exhaust fume collecting hood; The greasy dirt processing procedure is hidden; And evaded the risk that when environment for use air velocity of liquid assets is excessive, causes oily wire side greasy dirt to blow off, make the complete machine outward appearance clean more, clean and tidy.
Description of drawings
Fig. 1: the internal structure sketch map of the utility model;
Fig. 2: the complete machine structure sketch map of the utility model;
Fig. 3: the suction wind regime stream stage is to sketch map;
Fig. 4: existing range hood suction structural representation;
Description of reference numerals: body 1, inlet scoop 11, exhaust fume collecting hood 2, the oily net group of back taper annular 3, outer selvage wall 31, wire side 32, annular lubricating cup 4, contraction section 5 is integrated section 6, diffuser 7.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment: like Fig. 1,2; This suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-; Comprise body 1, body 1 is provided with the exhaust fume collecting hood 2 of oil smoke, and exhaust fume collecting hood 2 connects body 1 and the oily net group 3 of back taper annular; And be hidden in the exhaust fume collecting hood 2 after oily net group 3 assemblings of back taper annular, the oily net group 3 of back taper annular is provided with annular lubricating cup 4.
This structure suction structure is utilized the principle of Venturi tube effect, and is three phases with this suction structure, is respectively contraction section, integrates section, diffuser, and is as shown in Figure 3.
Phase I is a contraction section 5: " when air-flow from the coarse to fine the time, to accelerate gas flow rate, make gas form one ' vacuum ' district at the rear side of venturi outlet according to the venturi law.This region of no pressure produces certain suction-operated to air-flow." the outer selvage wall 31 of the oily net group 3 of back taper annular is that angle is the back taper of α in this structure; reduce the loss that the wind regime that causes because of parallel surface collides generation each other, outer selvage wall tapered configuration meets above-mentioned venturi law simultaneously; the loss that can be when taking into account the cigarette scope negative pressuren zone wind regime be compiled the initial stage generation drops to minimum; accelerated gas flow rates, strengthened the absorption affinity of oily net center, accomplished that negative pressure is mid-.Through experimental verification, optimal case contraction section angle is got 6 °.
Second stage is for integrating section 6: the wire side 32 of the oily net group 3 of back taper annular is β with the angle of vertical direction; Through inverted cone surface the time, carry out orderly integration at wind regime; The wind that mutual crossfire, collision produced when minimizing all directions wind regime compiled is made an uproar; Take into account the smooth and easy of oil circuit, optimal case β gets 60 °.
Phase III is a diffuser 7: according to mention in the venturi law " in order to reduce energy loss; can add an angle of flare in the outlet of anemostat straight pipeline and be 6 °-8 ° expansion segment; can make can obtain on the diffusion pipe outlet cross section approximate even mobile "; The inlet scoop 11 expansion angles of body 1 are γ in this structure, and optimal case γ gets 8 °.
Compare with existing overhead guard formula cigarette machine air draft system; The advantage of this structure is: through the Venturi effect of body 1, exhaust fume collecting hood 2, oily net group 3 compositions of back taper annular; The formation negative pressure is mid-; Effectively accelerate the suction of flue gas, reduced the wind that suction process apoplexy subject string flows, collision produces and made an uproar, effectively reduced the noise of complete machine when increasing exhaust air rate.In order to verify this structure, my department has carried out following contrast experiment.
Experiment method 1: ducting system of the same race (mainly forming motor+spiral case) is placed into respectively in this structure and the existing range hood structure; Under test environment of the same race, testing equipment; Get the test data of air quantity, two performances of noise and compare, the result shows: this structure air quantity under environment of the same race promotes 0.8m/min, noise reduces 1.5dB.
Experiment method 2: ducting system is put into this structure and carried out the test comparison of exhaust air rate with independent single ducting system; Under the condition of the same race; The number a tree name shows that exhaust air rate is improved, and compares independently single air channel and has exceeded 1.2m/min when ducting system is positioned in this structure.
Contrast through above-mentioned two experiments; Venturi effect obtains checking in this structure; And the oily net group 3 of back taper annular is hidden in the exhaust fume collecting hood 2; The greasy dirt processing procedure is hidden, and has evaded the risk that when environment for use air velocity of liquid assets is excessive, causes oily wire side greasy dirt to blow off, and makes the complete machine outward appearance clean more, clean and tidy.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-; Comprise body (1); It is characterized in that: body (1) is provided with exhaust fume collecting hood (2); Exhaust fume collecting hood (2) connects body (1) and back taper annular oily net group (3), and the back taper oily net group of annular (3) is located in the exhaust fume collecting hood (2), and the back taper oily net group of annular (3) is provided with annular lubricating cup (4).
2. the suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-according to claim 1; It is characterized in that: the outer selvage wall (31) of the back taper oily net group of annular (3) is that angle is the back taper of α; The wire side (32) of the back taper oily net group of annular (3) also is a back taper; Wire side (32) is β with the angle of vertical direction, and the inlet scoop (11) of body (1) has the angle γ of an expansion.
3. the suction structure of utilizing venturi principle to realize the range hood that negative pressure is mid-according to claim 2, it is characterized in that: α is 6 °, and β is 60 °, and γ is 8 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202940140U CN202253858U (en) | 2011-08-12 | 2011-08-12 | Extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202940140U CN202253858U (en) | 2011-08-12 | 2011-08-12 | Extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202253858U true CN202253858U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202940140U Expired - Lifetime CN202253858U (en) | 2011-08-12 | 2011-08-12 | Extractor hood absorbing-discharging structure using Venturi principle to realize center-built negative pressure |
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| Country | Link |
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| CN (1) | CN202253858U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059611A1 (en) * | 2015-10-09 | 2017-04-13 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN107741042A (en) * | 2017-11-19 | 2018-02-27 | 中山市乐邦生活电器有限公司 | A kind of double V-shaped range hood |
| CN111006275A (en) * | 2020-01-03 | 2020-04-14 | 宁波方太厨具有限公司 | Filter screen and range hood with same |
| CN112050341A (en) * | 2020-09-10 | 2020-12-08 | 南京长江都市建筑设计股份有限公司 | Toilet ventilation system with upper row, lower row and ventilation method |
-
2011
- 2011-08-12 CN CN2011202940140U patent/CN202253858U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059611A1 (en) * | 2015-10-09 | 2017-04-13 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN107741042A (en) * | 2017-11-19 | 2018-02-27 | 中山市乐邦生活电器有限公司 | A kind of double V-shaped range hood |
| CN111006275A (en) * | 2020-01-03 | 2020-04-14 | 宁波方太厨具有限公司 | Filter screen and range hood with same |
| CN111006275B (en) * | 2020-01-03 | 2022-03-18 | 宁波方太厨具有限公司 | Filter screen and range hood with same |
| CN112050341A (en) * | 2020-09-10 | 2020-12-08 | 南京长江都市建筑设计股份有限公司 | Toilet ventilation system with upper row, lower row and ventilation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |