CN2145336Y

CN2145336Y - Rotary efflux shielded cooker hood

Info

Publication number: CN2145336Y
Application number: CN 92218331
Authority: CN
Inventors: 张景松; 何学秋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-12
Filing date: 1992-07-12
Publication date: 1993-11-03
Anticipated expiration: 2002-07-12

Abstract

The utility model relates to a rotary efflux shielded cooker hood which is suitable for sucking and exhausting the oil fume or any other harmful gas under the efflux function, comprising an air sucking pipe, an external cylinder, a guide blade, an air supply pipe, an efflux opening, a sucking blower, a pressure feeding blower, etc. The rotating efflux ejected from a flared outlet on the periphery of the air sucking pipe is isolated with the outside by a sucking area while the air sucking pipe is sucked. Not only the sucking effect is raised, but also the sucking effect can be regulated because of the controlled area. Thus, the mounting position of the cooker hood can be changed in a large range.

Description

Rotary efflux shielded cooker hood

The utility model relates to a kind of environmentally-friendly sanitary equipment, especially a kind of range hood under the rotating jet shielding action.

At present general smoke exhaust ventilator is substantially all based on following principle: when promptly sucktion fan starts, form certain negative pressure naturally at the air entry place, externally under the atmospheric pressure effect, oil smoke is inhaled in the airduct.For reducing the oil smoke diffusion, all installed a very big cover cap additional on the top of lampblack absorber.However, lampblack absorber also must (be stipulated as specification requirement from cooking stove is very near, should be apart from the height of cooking stove) greater than 600mm, so, lampblack absorber actual height overhead generally can only be about 1200～1400mm, this is lower than adult average height, thereby brings very big inconvenience to the operator, and the accident of the personnel that therefore cause injury and equipment damage itself also happens occasionally.Weigh the advantages and disadvantages, the family that has has to exchange safety for to reduce the smoke pumping effect, is about to lampblack absorber and installs higherly.In addition, although added cover cap on top, but still some fresh air enters lampblack absorber from two sides, and the power consumption of suction system is increased.

The purpose of this utility model be designed in order to overcome above-mentioned weak point a kind of simple in structure, easy to adjust, the range hood that setting height(from bottom) can arbitrarily be adjusted with jet shielding action.

Task of the present utility model realizes in the following way, a kind of rotating jet range hood comprises air intake duct and is fixed on the urceolus of its outside, be fixed with the spirality guide vane between the two, form a spirality and press the wind passage, when motor drives force feed blower fan rotates, fresh air is pressed the wind passage by air supply pipe and spirality and is penetrated through flaring exit, form a rotation air curtain, oil smoke and hot gas that cooking stove is produced cover fully, prevent that also fresh air outside from entering air entry simultaneously.

The utility model has the following advantages compared with the prior art: under the rotating jet effect, increased the radial pressure gradient in the suction areas, thereby improved the control ability to oil smoke.Simultaneously, because of the adding of rotating jet, formed a negative pressure more much higher than common suction inlet at pump orifice, this has just improved the suction capactity of suction pipe greatly.In addition, regulate the flow and the spin intensity of jet, can change the control range (comprising transverse width and longitudinal length) of jet significantly.And can realize the economy of two range fumes of machine suction, purpose efficiently.Because of it has directed pumping function, so it does not have strict restriction substantially to the installation site, both can be installed in directly over the cooking stove, also can be installed in side top or side, can determine voluntarily with user preferences as the case may be.

Description of drawings:

Fig. 1 is the air-breathing flow field with planar shaped baffle plate.

Fig. 2 is the air-breathing flow field under jet action.

Fig. 3 is a structural representation of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail: as shown in Figure 3, it is by flaring exit (1), spirality guide vane (2), urceolus (3), air intake duct (4), force feed blower fan (5), damper (6), motor (7), sucktion fan (8), air supply pipe (9), oil-storing cup (10), exhaust duct (11) and anti-return that air door (12) etc. formed, wherein: spirality guide vane (2) is the spiral vane of being made by long shaped plate, urceolus (3) and air intake duct (4) are circle or oval pipe, its outer end is all made outside tubaeform mouthful, force feed blower fan (5) and sucktion fan (8) constitute by the impeller of spiral shell hull shape shell and multi-disc wind acanthus leaf composition, there is axis hole in impeller central authorities, end cap is arranged on the spindle nose, damper (6) is made up of the two-layer plectane that has sector notch up and down, wherein one deck is fixed, another layer is rotatable, make air door (6) aperture adjustable, air supply pipe (9) and blast pipe (11) are circle or oval pipe, prevent that returning air door (12) is made up of two semicircular plates, can rotate around the axial direction of self respectively.The equal available metal of whole parts or the nonmetallic materials of this lampblack absorber are made.Motor (7) two ends are separately installed with sucktion fan (8) and force feed blower fan (5); In motor (7) below sucktion fan (8) is housed, its shell bottom center is fixed with air intake duct (4), and communicate with it, the upper left side is fixed with blast pipe (11) and the anti-air door (12) that returns that communicates with it, there is the oil drain passage of protrusion the below, side, and the passage lower end is fixed with oil-storing cup (10); In motor (7) upper fixed force feed blower fan (5) is arranged, its housing outlet place communicates with air supply pipe (9) upper end and is fixedly connected, upper fixed has a damper (6), there is urceolus (3) outside of air intake duct (4), be fixed with spirality guide vane (2) between the two, constitute spirality channel, the sealing of one end, the other end forms flaring exit (1), and urceolus (3) upper outer communicates with air supply pipe (9) lower end and is connected and fixed.When motor (7) drives force feed blower fan (5) rotation, fresh air promptly enters the force feed blower fan through damper (6), entering spirality channel to flaring exit (1) by air supply pipe (9) again penetrates, form a rotation air curtain, the oil smoke that cooking stove is produced covers, meanwhile, pernicious gases such as oil smoke are under the swabbing action of sucktion fan (8), be inhaled in the air intake duct (4), behind sucktion fan, the part elaioleucite is thrown toward on the shell wall under centrifugal action, flows into then in the oil-storing cup (10), and gas is then discharged to blast pipe (11) after returning air door (12) through anti-.Change the aperture of damper (6), can change the shape of suction areas under the jet action, also changed the circular rector of jet simultaneously, produce different radial pressure gradients, thereby obtain the effect of best control oil smoke diffusion.Also can change pitch, jet exit radius and the jet orifice width of spirality guide vane in the design according to different fields of employment.

Claims

1, a kind of rotating jet shielding kitchen hood that under jet action, aspirates and discharge oil smoke or other pernicious gas that is applicable to, it is by flaring exit (1), spirality guide vane (2), urceolus (3), air intake duct (4), force feed blower fan (5), damper (6) motor (7), sucktion fan (8), air supply pipe (9), oil-storing cup (10), exhaust duct (11) and prevent that returning air door (12) forms; Sucktion fan (8) is equipped with in motor (7) lower end, and the spiral shell hull shape shell bottom center of sucktion fan (8) is fixed with air intake duct (4), and its upper left side is fixed with exhaust duct (11) and prevents returning air door (12), and the side is fixed with oil-storing cup (10); Force feed blower fan (5) is equipped with in motor (7) top that is characterised in that of the present utility model, the spiral shell hull shape housing outlet place of force feed blower fan (5) is fixed with air supply pipe (9), air supply pipe (9) lower end is fixed with the spirality air channel upper outer of being made up of air intake duct (4), urceolus (3) and spirality guide vane (2) and is communicated with, the one end sealing of spirality air channel, the other end is flaring exit (1); The upper fixed that is positioned at the force feed blower housing has an adjustable damper (6).

2, according to the said rotating jet of claim 1 shielding kitchen hood, it is characterized in that said damper (6) is made up of the two-layer plectane that has sector notch up and down, wherein one deck is fixed, and another layer turns.

3, according to the said rotating jet shielding of claim 1 kitchen hood, it is characterized in that the parts of said composition lampblack absorber all can be made by metal or nonmetallic materials.

4, according to the said rotating jet shielding of claim 1 kitchen hood, it is characterized in that said air intake duct (4) links to each other and is connected with the shell of the sucktion fan that is installed in same motor two ends (8) with force feed blower fan (5) respectively with air supply pipe (9).

5, according to the said rotating jet of claim 1 shielding kitchen hood, it is characterized in that said urceolus (3) and air intake duct (4) are that round tube or oval pipe make, its outer end is all made outside tubaeform mouthful.