CN2532395Y

CN2532395Y - Flow-guiding type fume exhauster

Info

Publication number: CN2532395Y
Application number: CN 02218963
Authority: CN
Inventors: 李东伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-09
Filing date: 2002-02-09
Publication date: 2003-01-22
Anticipated expiration: 2012-02-09

Abstract

Disclosed is an airflow leading type oil fume extractor, which comprises a shell and a fan arranged in the shell, an air exhaust orifice is arranged on the shell. The utility model is characterized in that a back side plate of the shell extends downward; an air guiding net is arranged in front of the shell; a space between the air guiding net and the shell forms a negative pressure area. The utility model can lead the airflow so as to enlarge the control range of the oil fume extractor to the airflow, in case the oil fume escaping, and the exhausting efficiency is increased.

Description

The drainage type smoke exhaust ventilator

Technical field

The utility model relates to a kind of device that is used to get rid of the oil smoke that produces when cooking stove uses, and is specifically related to a kind of drainage type smoke exhaust ventilator, is particularly suitable for family and uses.

Background technology

Present smoke exhaust ventilator generally comprises housing and is installed on the interior blower fan of housing, has exhaust pipe mouth on the housing, blower fan is provided with the inlet scoop outward, no matter be single blower fan or two blower fan, general expression or dark bell-type, the position of its inlet scoop is similarly, promptly the inlet scoop be positioned at cooking stove directly over.The smoke exhaust ventilator of this structure is when work, the air at fans entrance place is smoked, form low pressure, owing to there is not effective rectification, ambient air only replenishes by flowing naturally, be subjected to the effect of gravity, replenish air above around the air port is maximum, the below less on the contrary, so the air-flow of Xing Chenging is more much bigger than the below up, like this, cause the swabbing action of air-flow to can't reach cooking stove to the Lower Half space between the blower fan inlet scoop, the oil smoke of harsh one-tenth just rises under the heat effect naturally; In case oil smoke moment generates too many, will to around disperse, generate the area of area greater than inlet scoop even lampblack absorber cover body, only some can rise to that the inlet scoop is neighbouring to be taken away; Simultaneously because that air-flow distributes is reasonable inadequately, even the part oil smoke arrived near the inlet scoop by the wall side, can not be sucked away.Thereby this class smoke exhaust ventilator effect is all undesirable, and some producer continues to increase power of fan for this reason, attempts to improve the exhausting amount, but poor effect.

Chinese patent CN2245736Y discloses a kind of tilt moving type oil and smoke cleaner, its structure is on the basis of existing lampblack absorber, blower fan is obliquely installed, attempt to shorten the distance of blower fan mouth and cooking stove, but because this device still adopts two traditional structures that blower fan is respectively bled by an inlet scoop, air-flow lacks effective rectification to external world, and whole structure is still undesirable.Thereby, must fundamentally change the structure that traditional blower fan is bled by single inlet scoop, just might improve the oil suction cigarette efficient of lampblack absorber.

Summary of the invention

The utility model purpose provides a kind of drainage type smoke exhaust ventilator, by changing the design of inlet scoop, air-flow is produced the effect of rectification, thereby improves the efficient of lampblack absorber.

For achieving the above object, the technical solution adopted in the utility model is: a kind of drainage type smoke exhaust ventilator, comprise housing and be installed on the interior blower fan of housing, have exhaust pipe mouth on the housing, the back side panel of described housing extends downwards, be provided with the wind-guiding net before the housing, the space between wind-guiding net and housing constitutes negative pressuren zone.

In the technique scheme, described wind-guiding net is the thin plate of band arc, and the angle between its top and housing junction and horizontal plane is not more than 20 °, and the angle between bottom and housing junction and vertical plane is not more than 20 °, and described wind-guiding is distributed with air-guiding hole on the net.

In the technique scheme, the draught area of the online air-guiding hole that distributes of unit are wind-guiding increases progressively from top to bottom, successively decreases toward both sides from middle; Wherein, described air-guiding hole can be circular hole, also can be Long Circle hole or other shapes of being convenient to process.

In the technique scheme, the bottom of housing was a little more than the height of iron pan on the cooking stove when length that the back side panel of described housing extends downwards made installation.

In the technique scheme, described blower fan can be centrifugal exhauster, also can be propeller fan.

The utility model operation principle is: the utility model is provided with the wind-guiding net, lampblack absorber in the past, usually near blower fan, offer the inlet scoop, and the remainder under the housing is sealed, utilize the suction function of inlet scoop to attract oil smoke, the utility model is then downward with the back side panel of housing, wind-guiding net camber structure, cover the top and the proceeds posterolateral of cooking stove, air-guiding hole is set on the net, utilize the wind-guiding net that air is produced rectified action at wind-guiding, distribution and size by the online air-guiding hole of appropriate design wind-guiding, can strengthen the stream condition in cooking stove and the formed space of smoke extractor, gas can be flowed to the wind-guiding net surface, oil smoke is played the effective collection effect; The setting of air-guiding hole, position and power according to blower fan are different, for reaching effect preferably, the draught area of the online air-guiding hole that distributes of unit are wind-guiding increases progressively from top to bottom, successively decrease toward both sides from middle, the gross area of air-guiding hole strengthens under satisfying the prerequisite of air rectified action as far as possible, to reduce resistance.The installation of wind-guiding net, the wind-guiding net above making is slightly downward-sloping, helps the sump oil collection that flows downward on the one hand, help the as close as possible cooking stove of air guide hole on the other hand, imitatively again hinder operation, simultaneously, the rear wall section of wind-guiding net is also oblique to the cooking stove inclination, guarantees the swabbing action of blower fan.

In the utility model, because the housing back side panel is extended downwards, the wind-guiding net has had a side that near normal is downward, by its sucking action, effectively prevent the diffusion all around of oil smoke, while rising, oil smoke is absorbed, oil smoke has just been produced just to be kept a firm hand on, prolonged the absorption process of whole oil smoke, prevented that effectively oil smoke from escaping from the upper plane of smoke exhaust ventilator, improved the suction effect.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1. because the utility model has made original inlet scoop structure into large-area wind-guiding web frame, produced drainage, can effectively enlarge the control range of smoke exhaust ventilator, avoided oil smoke to escape air-flow for air;

2. the utility model has increased the air draught face that places upside behind the cooking stove, has effectively enlarged control range, has solved oil smoke diffusion around harsh Cheng Shixiang, escapes from the problem of lampblack absorber control range.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment one;

Accompanying drawing 2 is the left view of Fig. 1.

Wherein: [1], housing; [2], blower fan; [3], exhaust pipe mouth; [4], back side panel; [5], wind-guiding net; [6], air-guiding hole.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to attached illustrated in figures 1 and 2, a kind of drainage type smoke exhaust ventilator, comprise housing 1 and the blower fan 2 that is installed in the housing 1, blower fan 2 adopts propeller fan, have exhaust pipe mouth 3 on the housing 1, the back side panel 4 of described housing 1 extends about 60 centimetres downwards, be provided with wind-guiding net 5 before the housing 1, wind-guiding net 5 is the thin plate of band arc, angle between its top and housing 1 junction and horizontal plane is about 10 °, angle between bottom and housing 1 junction and vertical plane is 12 °, be distributed with oblong air-guiding hole 6 on the described wind-guiding net 5, the draught area of the online air-guiding hole that distributes of unit are wind-guiding increases progressively from top to bottom, successively decreases toward both sides from middle, and the space that wind-guiding net 5 and housing are 1 constitutes negative pressuren zone.

In the present embodiment, can set up relevant circuit control device as required,, at this moment, still belong to the scope of the utility model protection as illuminating lamp, Wind speed switch, power switch etc.

Claims

1. drainage type smoke exhaust ventilator, comprise housing [1] and be installed on the interior blower fan [2] of housing [1], have exhaust pipe mouth [3] on the housing [1], it is characterized in that: the back side panel [4] of described housing [1] extends downwards, the preceding wind-guiding net [5] that is provided with of housing [1], the space between wind-guiding net [5] and housing [1] constitutes negative pressuren zone.

2. drainage type smoke exhaust ventilator as claimed in claim 1, it is characterized in that: described wind-guiding net [5] is the thin plate of band arc, angle between its top and housing [1] junction and horizontal plane is not more than 20 °, angle between bottom and housing [1] junction and vertical plane is not more than 20 °, is distributed with air-guiding hole [6] on the described wind-guiding net [5].

3. drainage type smoke exhaust ventilator as claimed in claim 2 is characterized in that: the draught area of the online air-guiding hole that distributes of unit are wind-guiding increases progressively from top to bottom, successively decreases toward both sides from middle.

4. drainage type smoke exhaust ventilator as claimed in claim 2 is characterized in that: described air-guiding hole [6] is a circular hole.

5. drainage type smoke exhaust ventilator as claimed in claim 2 is characterized in that: described air-guiding hole [6] is the Long Circle hole.

6. drainage type smoke exhaust ventilator as claimed in claim 1 is characterized in that: the bottom of housing [1] was a little more than the height of iron pan on the cooking stove when length that the back side panel [4] of described housing [1] extends downwards made installation.

7. drainage type smoke exhaust ventilator as claimed in claim 1 is characterized in that: described blower fan [2] is a centrifugal exhauster.

8. drainage type smoke exhaust ventilator as claimed in claim 1 is characterized in that: described blower fan [2] is a propeller fan.