CN2152164Y

CN2152164Y - Air guided strong suction power noiseless fume exhuasting fan

Info

Publication number: CN2152164Y
Application number: CN 93207132
Authority: CN
Inventors: 任思远
Original assignee: LINZHONGWU HOUSEHOLD ELECTRIC APPLIANCE FACTORY YIN COUNTY ZHEJIANG PROV
Current assignee: LINZHONGWU HOUSEHOLD ELECTRIC APPLIANCE FACTORY YIN COUNTY ZHEJIANG PROV
Priority date: 1993-03-26
Filing date: 1993-03-26
Publication date: 1994-01-05
Anticipated expiration: 2003-03-26

Abstract

The utility model discloses an air guided strong suction power noiseless fume suctioning and exhuasting fan, composed of an air intake shell body, a soleplate, an oil collecting groove, a hemispherical filter screen, a spiral casing, impellers, a motor, mufflers, an air exhausting opening, etc. Muffler devices are arranged in the air inlet path and the air outlet path of a fume exhuasting fan. Passive impellers are arranged in a shell body nad two main air inlets. The utility model is characterized in that multi-stage noise elimination which is composed of the muffler devices, a filter screen, the air intake shell body is taken as the measures for reducing noise. The noise is reduced to 63 dB (sound power level). The quantity of air reaches 16 cubic meter/minute. Wind pressure reaches 140 Pa. Moreover, the wind inducing strong suction power measures of the two main air inlet and three auxiliary air inlet paths are adopted in fume suctioning structure. Therefore, residual harmful gases produced by a cooking stove are completely sucked and discharged by the passive impellers which rotate with air flow to reduce environmental pollution.

Description

Air guided strong suction power noiseless fume exhuasting fan

The utility model relates to the kitchen fume ventilation equipment.

Kitchen hood both domestic and external adopts the blowing-type structure mostly, pay attention to smoke evacuation, even adopted induced air type unintentionally, but air inlet is from pot mouth distance, or the air port area is big, the pernicious gas that pot and stove is produced can't be extracted out at once, but extract out again after the diffusion, cause pernicious gas diffuse pollution surrounding air, simultaneously also ubiquity air quantity, the contradiction of blast and noise, and air quantity, blast is the principal element that directly influences air draught smoking effect, be that airflow pressure is big, air draught smoking is effective, but noise is big, otherwise low as airflow pressure, noise is also low, but how air draught smoking weak effect properly solves above-mentioned contradiction, does not still have at present to occur than rational structure.

The purpose of this utility model is to overcome the defective of prior art, and a kind of have certain airflow pressure, air draught smoking is effective, noise is low induced air type strong suction noiseless kitchen hood are provided.

The utility model is achieved by the following scheme: its emphasis on the architecture basics of existing kitchen hood improves reducing noise structure and smoking structure, reduce the measure of noise and adopt multistage noise elimination structure, inlet shell is designed to be inverted the box-shaped hollow parts, at air intake and air-out passage silencing apparatus is set, and between housing and active impeller, hemispherical screen pack is set, make to be arranged in the spiral case and after multistage noise elimination, reduce to bottom line away from motor, the impeller sound source of kitchen range face top.The smoking structure adopts the measure of induced air type strong suction, two main air inlets on the base plate and the base plate of housing and its inwall of lifting form preceding, left and right three secondary air inlet ducts, be provided with passive impeller in housing and the main air inlet, the remaining pernicious gas that cooking stove is produced by two passive impeller rotations of rotating with air-flow absorbs after exhaust outlet is discharged.

Press the kitchen hood of the utility model design, owing to adopted multistage noise elimination structure, therefore air quantity reaches 16m after tested ³/ minute, blast reaches 140Pa, noise is less than the 63dB(acoustic power level), this and national high-class product air quantity 12m ³/ minute, the standard of blast 120Pa, noise 68dB is compared, and quality improves greatly.On the smoking structure, adopt the measure of air inducing strong suction, two main air inlets add the secondary air inlet duct of three strips, the remaining pernicious gas that does not advance main air inlet that pot mouth and gas range are produced exhausts at secondary air inlet duct rapidly discharges, have the effect of air draught smoking preferably, reach and reduce the purpose that environmental pollution purifies air.

Description of drawings.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Elaborate again according to above-mentioned accompanying drawing embodiment.

The inlet shell (1) of induced air type strong suction noiseless kitchen hood (referring to 1～2) is an inverted box-shaped hollow thin-wall part in addition, base plate (2) lifting with two main air inlets (12) is fixed on housing (1) inwall, base plate (2) is sowed discord before promptly be housing mutually with housing (1) all around, a left side, the continuous secondary air inlet duct (17) of right three strips, respectively be provided with passive impeller (11) in housing (1) and two main air inlets (12), it is movably connected in housing (1) inwall, rotate with air-flow, with main air inlet (12), secondary air inlet duct (17) inhaled air is sent into the air channel, and greasy dirt got rid of into housing (1) oil trap of madial wall (18) all around, flow in two two lubricating cups (13) that are contained in the inboard rear wall of inlet shell, inlet shell (1) retaining cigarette area is that 10 times～30 times of air inlet (comprising the secondary air inlet duct of two main air inlets and three strips) are for best again.

Front shroud (19) is established in inlet shell (1) the place ahead, decorates first, second the land place of trade mark, switch.The lead (10) that connects switch picks out thus.Hemispherical screen pack (16) in the housing (1) is fixed between housing (1) and the active impeller (4).

Fixing with the same inlet shell of spiral case (3) (1) that exhaust outlet (8) is connected as a single entity, exhaust outlet (8) can need be contained in spiral case (3) left side or right side (Fig. 1) or rear side by the user, and spiral case (3) can be arranged on left side or the right side or the rear side (Fig. 1～2) of inlet shell (1) top.Page grid (9) are housed on the exhaust outlet (8).Oil guide pipe (14) is exactly the intersection that is contained in spiral case (3) and inlet shell (1), and both relative positions are located, and plays the Oil Guide effect simultaneously.

Motor (6) is housed in the spiral case (3), initiatively impeller (4) is contained on the motor shaft, and is fixing by pressure cap (23), and initiatively impeller (4) adopts the forward direction impeller, compressed product size, because of inlet shell (1) oil-collecting and screen pack (16) oil strain are arranged, can make on the forward direction impeller greasy dirt few, prevent that impeller from increasing the weight of because of greasy dirt, block the air channel, motor load increases the weight of, thereby causes airflow pressure to reduce, the defective that noise increases.

This structure is in order to reach the low noise purpose, between housing (1) and spiral case (3), silencing apparatus (5) is set, form three grades of noise elimination structures by silencing apparatus (5), screen pack (16), inlet shell (4), silencing apparatus (5) is a sandwich, is made up of outer (20) and the internal layer (22) that has a plurality of through holes (21).Hemispherical screen pack (16) also can be arranged between spiral case (3) and the silencer (5) except that can being arranged on housing (1) air outlet (Fig. 2).

Inlet shell (1) and spiral case (3) articulate by hangers (7) and fixed buildings.Base plate (2) also is equipped with illuminating lamp (15), heat sensor and gas leak detector (24).Heat sensor is opened and the suction machine is not opened or coal gas has closed and automatic open close under the state that the suction machine does not close at coal gas.Gas leak detector is reported to the police simultaneously, and reminds people in time shuts coal gas.

The operation principle of this kitchen hood is: pernicious gas and little steam that gas range or pot produce when the cooking are entered by main air inlet (12), residual gas is entered by secondary air inlet duct (17), air velocity is slack-off suddenly after inlet shell (1), thereby reach Oil-gas Separation, noise descends about 4 decibels, again through hemispherical screen pack (16) retaining oil, gas enters active impeller (4) passage and is dished out outdoor through page or leaf grid (9) discharge by exhaust outlet (8) behind spiral case (3) diffusion by blade, at this moment, residual greasy dirt spiral case (3) is concentrated, oil guide pipe (14) is back to oil trap (18), and enter lubricating cup (13) by oil trap (18), unload removal after gathering.

When the single kitchen range of user was cooked, available single hole air draught was user's economize on electricity.

Claims

1, a kind of induced air type strong suction noiseless kitchen hood, comprise inlet shell (1) and lifting base plate (2) within it, have two main air inlets (12) on the base plate (2), front shroud (19) is established in housing (1) the place ahead, the spiral case (3) that has exhaust outlet (8) is fixed on housing (1) top, motor (6) and active impeller (4) are housed in the spiral case (3), spiral case (3) is provided with oil guide pipe (14) with the intersection of inlet shell (1), oil trap (18) distributes around housing (1) madial wall, two lubricating cups (13) are contained in the inboard rear wall of inlet shell (1), it is characterized in that:

A. this lampblack absorber air intake and air-out passage are provided with silencing apparatus (5);

B. described inlet shell (1) is for being inverted the hollow parts of box-shaped;

C. be provided with passive impeller (11) in housing (1) and two main air inlets (12).

2, induced air type strong suction noiseless kitchen hood as claimed in claim 1 is characterized in that inlet shell (1) and initiatively is provided with hemispherical screen pack between the impeller (4).

3, induced air type strong suction noiseless kitchen hood as claimed in claim 1 is characterized in that forming between inlet shell (1) and the base plate (2) the secondary air inlet duct (17) of preceding, left and right three strips.

4, induced air type strong suction noiseless kitchen hood as claimed in claim 1 is characterized in that inlet shell (1) retaining cigarette area is 10 times to 30 times of air inlet.

5, induced air type strong suction noiseless kitchen hood as claimed in claim 1 is characterized in that exhaust outlet (8) can be arranged on left side or the right side or the rear side of spiral case (3); Spiral case (3) can be arranged on left side or the right side or the rear side of inlet shell (1) top.