CN203893279U

CN203893279U - Negative pressure type range hood

Info

Publication number: CN203893279U
Application number: CN201420320324.9U
Authority: CN
Inventors: 梁其昌; 梁昕
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-17
Filing date: 2014-06-17
Publication date: 2014-10-22
Anticipated expiration: 2024-06-17

Abstract

The utility model discloses a negative pressure type range hood which consists of a negative pressure chamber, an air knife, a turbo charger fan, an air filtering net, a fume collecting chamber, an induction unit and a check valve, in the specification, A represents inlet air, B represents cooking fume, and C represents high speed air flow (50m/s); the section of the air knife is trapezoid-shaped; the air inlet of the air knife is in threaded connection with the outlet of the turbo charger fan; the outlet of the air knife is a square which is 38 and 116 in width and length; the section of the induction unit is of a U-shaped structure and an angle of 35-38 degrees is formed between the induction unit and the horizontal plane. The range hood has the beneficial effects that the structure of a conventional range hood is fundamentally changed, a fan impeller and an oil net which are essential in the conventional range hood are omitted in the channel from which the cooking fume is sucked out, and thus the difficulty that the range hood is hard to clean is fundamentally solved; the resistance in discharging the cooling fume is reduced, the working efficiency of the range hood is improved, and the environment pollution caused by detergent is also reduced.

Description

A kind of negative pressure type kitchen ventilator

Technical field:

The utility model relates to household electrical appliance technical field, particularly relates to the smoke exhaust ventilator using in a kind of family kitchen.

Background technology:

In the prior art, the smoke exhaust ventilator that family kitchen is used uses popularity rate very high, the version of smoke exhaust ventilator have a top suction type with side draught type etc., but general structure and operation principle are all the same substantially: range hood structure is all comprised of motor, centrifugal fan, blade, rotor, screen pack etc., this smoke exhaust ventilator in use for some time, the impeller of centrifugal fan and oil network can be accumulated a large amount of greases, cause suction to decline, noise rises, and the cleaning of smoke exhaust ventilator is also a very headachy hard nut to crack.In order to solve the cleaning problem of lampblack absorber, the product that Present Domestic is commercially available outward has three kinds of modes: the one, on lampblack absorber, install detergent device additional: by manual method to the lampblack absorber cleaning agent of annotating, smoke exhaust ventilator is regularly to draught fan impeller jet cleaner, and then start is cleaned; The 2nd, on the shell of blower fan, install electric heater unit additional, use after a period of time, the self-timing heating regular hour, the grease accumulating is melted, then discharge after start in blower fan; The 3rd, in smoke exhaust ventilator, add steam device, manually water is sucked in lampblack absorber, regularly in blower fan, spray steam and make to discharge after the grease fusing in blower fan.But, because the Zhuan Gong of blower fan is High Rotation Speed as Time, have again a lot of blades, the gap of blade and blade is very little, the shell of fan rotor blade and blower fan has certain gap, is difficult to heated wash, and steam and cleaning agent are also difficult to draught fan impeller to clean up.

Summary of the invention:

The object of the invention is to overcome the deficiency that prior art exists, provide a kind of thorough change traditional range hood structure; Cancel centrifugal blower, blade and screen pack, fundamentally solve the negative pressure type kitchen ventilator that smoke exhaust ventilator cleans problem.

The technical solution of the utility model is to provide a kind of negative pressure type kitchen ventilator, it is characterized in that: negative pressure cavity, air knife, turbine boosted fan, airstrainer, smoke collecting chamber, persuader, non-return valve, consist of; A is air inlet; B is oil smoke; C is high velocity air (50m/s); The section of air knife is trapezoidal, and the air inlet of air knife adopts and is threaded with the outlet of turbine boosted fan, the rectangle that the outlet of air knife is 38 * 116; Persuader section is U-shaped structure, is 35-38 degree angle with level.

The beneficial effects of the utility model are: fundamentally thoroughly changed the structure of traditional smoke exhaust ventilator, eliminated the essential draught fan impeller of traditional smoke exhaust ventilator and oil network at oil smoke in the passage being sucked out, fundamentally solved smoke exhaust ventilator and cleaned difficult problem; Reduce the resistance that oil smoke is discharged, improved the operating efficiency of smoke exhaust ventilator.The technical solution of the utility model is the subversiveness revolution of range hood structure, has epoch-making significance.Because inductive kitchen hood has solved the difficult problem of cleaning of traditional lampblack absorber, really accomplished to exempt to clean.Thereby give, use the family of smoke exhaust ventilator to save manpower, financial resources and time, reduced the trouble that cleaning fan of sucking oil fume brings, can save lampblack absorber cleaning charge 80-100 unit for every, the cleaning of exempting from of smoke exhaust ventilator has also reduced the environmental pollution that while cleaning, cleaning agent causes.

Accompanying drawing explanation:

Fig. 1 is the whole cross-sectional view of a kind of negative pressure type kitchen ventilator in the utility model embodiment;

In accompanying drawing: 1. negative pressure cavity; 2. air knife; 3. turbine boosted fan; 4. airstrainer; 5. smoke collecting chamber; 6. persuader; 7. non-return valve; A. air inlet; B. oil smoke; C. high velocity air (50m/s).

The specific embodiment:

A kind of negative pressure type kitchen ventilator of the utility model embodiment is described in further detail below in conjunction with accompanying drawing: the negative pressure type kitchen ventilator in Fig. 1, mainly by negative pressure cavity 1, air knife 2, turbine boosted fan 3, airstrainer 4, smoke collecting chamber 5, persuader 6, non-return valve 7, form; A is air inlet; B is oil smoke; C is high velocity air (50m/s); The section of air knife 2 is trapezoidal, and the air inlet of air knife 2 adopts and is threaded with the outlet of turbine boosted fan 3, the rectangle that the outlet of air knife is 38 * 116; Persuader 6 sections are U-shaped structure, are 35-38 degree angle with level.Under the effect of the negative pressure generator being formed by turbine boosted fan 3 and air knife 2, form negative pressure in lampblack absorber, under the MULTIPLE COMPOSITE effects such as negative pressure and the entrainment of high velocity air (50m/s) and the induction of high velocity air and purging, oil smoke is taken away.As shown in Figure 1, the high velocity air that turbine boosted fan 3 produces by air knife 2 (50m/s), in machine, negative pressure cavity 1 forms negative pressure, under the MULTIPLE COMPOSITE effects such as the entrainment of negative pressure and high velocity air C and the induction of high velocity air C and purging, by persuader 6, oil smoke B is discharged through non-return valve 7.Operation principle of the present utility model is: according to the principle of hydromechanical continuity equation and bernoulli equation formula, the dynamic head of fluid increases its hydrostatic head and reduces.Under the effect of the negative pressure generator in smoke exhaust ventilator, form negative pressure, under the MULTIPLE COMPOSITE effects such as negative pressure and the entrainment of high velocity air (50m/s) and the induction of high velocity air and purging, oil smoke is taken away.

Claims

1. a negative pressure type kitchen ventilator: it is characterized in that: formed by negative pressure cavity (1), air knife (2), turbine boosted fan (3), airstrainer (4), smoke collecting chamber (5), persuader (6), non-return valve (7); A is air inlet; B is oil smoke; C is high velocity air (50m/s); The section of air knife (2) is trapezoidal, and the air inlet of air knife (2) adopts and is threaded with the outlet of turbine boosted fan (3), the rectangle that the outlet of air knife is 38 * 116; Persuader (6) section is U-shaped structure, is 35-38 degree angle with level.