CN207763010U - A kind of smoke exhaust ventilator of low-noise heating negative pressure - Google Patents

Abstract

The utility model discloses a kind of smoke exhaust ventilator of low-noise heating negative pressure, including petticoat pipe, exhaust column, smoke exhaust pipe and bend pipe, the bend pipe is connected between exhaust column and smoke exhaust pipe, the exhaust column is between petticoat pipe and smoke exhaust pipe, outside the smoke exhaust pipe connection flue or house, the air inlet of the exhaust column and the opening size of air outlet are more than the diameter in exhaust column stage casing, and the exhaust column is equipped with heating device, the heating device is installed on the tube wall of exhaust column, and the bend pipe is externally provided with pressure fan.The smoke exhaust ventilator of the low-noise heating negative pressure of the utility model, deep fat cigarette acceleration in exhaust column, which is drawn, with the mode of hot negative pressure self-priming is discharged into flue, pressure fan is installed on outside bend pipe, the obstructed over-pressed electric fan of oil smoke, low noise, the wind for coming from exhaust column is hot, and oil smoke is not easy to be attached to exhaust column, smoke evacuation inside pipe wall, is convenient for the repair and cleaning of smoke exhaust ventilator.

Description

A kind of smoke exhaust ventilator of low-noise heating negative pressure

Technical field

The utility model is related to kitchen appliance technical field of structures more particularly to a kind of smoke pumpings of low-noise heating negative pressure Machine.

Background technology

Currently, smoke exhaust ventilator has become one of kitchen products member indispensable in urban households of China kitchen.Oil pumping Smoke machine be it is a kind of driving away the household appliances of flue gas using miniature " the artificial wind " that is artificially formed, that is, use " air negative pressure " former Reason, electronic impeller is installed in a metal fuselage, when impeller high speed rotation will around smoke exhaust ventilator air inlet shape Enter the air negative pressure area in smoke exhaust ventilator at a guiding flue gas, flue gas will ceaselessly be entered by " suction " in smoke exhaust ventilator.

For smoke exhaust ventilator in working condition, " flue gas " of suction is mainly with air, vapor, flue gas, exhaust combustion gases etc. Composition is the mixing air more much larger than normal air viscosity number.In volute, " flue gas " micel in smoke exhaust ventilator due to Collision between the collision and micel of impeller causes temperature rise, and then the viscosity of mixed gas increases, and increases gas The resistance of body flowing has a considerable amount of oil droplet attachments, condenses in the spiral case of smoke exhaust ventilator, the surface of impeller, motor, more Acute smoke exhaust ventilator is discharged fume unfavorable turbulent flow phenomenon, needs professional person to dismantle core component cleaning, otherwise disassembly, cleaning process In often damage the performances of associated components, the effect for gas of smoking substantially reduces, these situations can give traditional smoke exhaust ventilator band Carry out three major issues：

1. the attachment of oil droplet can increase the running resistance of induced-draft fan, the effect for gas of smoking substantially reduces, if along with not special Industry or cleaning not in time and unprofessional assembling, but will reduce the smoke discharging effect of smoke exhaust ventilator.

2. the resistance of oil droplet attachment, gas flowing increases, the operation noise of exhaust fan can be obviously increased, kitchen work people is made Member is subjected to the pollution of noise in busy cook.

3. smoke exhaust ventilator vibrates excessive, easy oil leakage.Unprofessional assembling, installation be bad, has foreign matter, internal incrustation on blade Blocked up, motor bearings abrasion or bearing hole cross big city and the high-amplitude of smoke exhaust ventilator are caused to shake.

With the variation of domestic environment, whole (integration) kitchen is more and more, to the smoke evacuation ability of cooking-fume exhauster It is required that higher and higher, the slogan of low flue gas, low noise or even zero flue gas is not rarely seen.Realize real zero flue gas, no Range hood entrance is only reduced to cooker face hereinafter, also to allow smoke absorption distance to be reduced to simultaneously most short.

It is investigated that card, smoking gas technology experienced first generation top suction type and second since last century, the eighties introduced China For the variation of side-suction type, but due to the defect of product technology itself, it is unable to reach 100% suction effect of flue gas always.In addition, Traditional top suction type smoke exhaust ventilator is all furred ceiling design mostly, and mounting height is generally apart from 70 centimetres or so of hearth face, and it has Effect suction radius is substantially at 40 centimetres or so, therefore pot face is completely disposed in except the aspiration ranges of smoke exhaust ventilator, such flue gas from Pot face one generates and will run wild, and can not exhaust flue gas.With the raising of technical merit, though second generation side-absorption type smoke exhaust ventilator The distance for the smoke absorption that so furthered, but because be to wait flue gas volatilization just to start, in addition unidirectional smoking can not avoid remaining The diffusion of flue gas, so the whole exhaustions that still cannot achieve flue gas are inhaled in side.

The promise manufactured using German technique inspires confidence in kitchen fort, and smoke exhaust ventilator is using " promise inspires confidence in Fumexter positive/negative-pressure tobacco controls Technology ", principle are to be depressed the flue gas to raise up using the positive wine pressure being located on righteous style and practice frame, it is allowed to take advantage of a situation to negative wind along the bottom of a pan Mouth is pressed, is raised outside operator's face wind screen formed below, control flue gas, adsorbs flue gas in 38 cm ranges, it is significantly superior In 16 centimetres of suction force ranges of traditional single negative wind pressure, it can thoroughly achieve the effect that suction flue gas, to realize the ideal of zero flue gas State brings the healthy living of real zero flue gas for Chinese Consumer's, but this technology is complicated, of high cost.

Also tackling of key scientific and technical problems is unfolded to smoke exhaust ventilator in succession in domestic researcher, has invented the smoke exhaust ventilator of various performances.Packet It includes：

Isolated smoke exhaust ventilator (Su Yanli, Han Weiguo, Dong Jianbo) based on negative pressure theory.It is a novel pumping without dismantling and cleaning Kitchen ventilator is isolated by greasy dirt with the power part of smoke exhaust ventilator, is avoided core component viscous oil dirty, is reduced noise, fundamentally thoroughly Solve the cleaning problem of smoke exhaust ventilator.

Novel cooking fume exhauster (Ma Xunju) based on principle of negative pressure.It has been carried out newly using fluid mechanics principle and principle of negative pressure The structure and Functional Design of type smoke exhaust ventilator, efficiently solve the problems, such as these, and do not influence the effect of smoking gas.

Using the smoke exhaust ventilator (Zhang Hui, Li Jie, Liu Xunqian) of artificial spout effect.It installs additional and revolves in common smoke exhaust ventilator front The shielding fluidic device turned makes smoke exhaust ventilator suction flow field be coupled with rotating jet flow field, to obtain artificial spout flowing Flow field, and realize the control and suck to flue gas using the artificial spout.

Smoke chamber is without electric motor with vane wheel air amplifying type smoke exhaust ventilator (complete solution life).By increasing oil groove and oilhole, energy in ontology It is blocked from anti-air gap, there is wall attachment effect, the compressed air of input to rush at ontology air cavity upper end or even top from air gap, formed empty Heart shaped negative pressuren zone can aspirate the flue gas below ontology bottom end, form solid air column strongly, to realize that drawing smoke amount is much larger than Compressed air input quantity.

Gravity flow/flow-guiding type fume exhauster (Zhang Xun and).The machine is developed to adapt to the needs of Shao Mei families.Its spy Point is the convection current using air, and exhaust gas can be voluntarily discharged by gas gathering mask through exhaust pipe at any time, and nothing is appointed in exhaust passage The metal part of what choke also can smoothly be vented when motor does not work and corrode relatively gently, and exhaust fan itself is not direct with flue gas Contact, the drainage drawing smoke of the high-speed flow generated by exhaust fan are simultaneously discharged, and smoke discharging is efficient, the flue gas in kitchen It can be discharged together with muddy air.

It is polluted to prevent flue gas to be directly discharged into air, flue gas will be purified before being discharged into air, be pumped at present The purification style of smoke machine is broadly divided into two kinds：

Inertial separation method.The cleaning principle of this kind of mode is exactly to purify dust-laden gas containing flue gas using grating type construction, is changed Become its airflow direction, in this way, oil mist particles will be separated from air-flow, this kind of mode is simple in structure, but to flue gas Clean-up effect is but accidentally ideal, and maintenance workload is big, it is easy to block.

Filtration method.This kind of mode mainly contains flue gas using fiber mat, activated carbon fiber, composite material filter cloth to filter dust-laden Gas purifies mist of oil, and the gas cleaning efficiency of this mode is very high, just will appear saturation in a short time, increases wherein Resistance, change kitchen ventilation situation.

From the point of view of the actual conditions in China, China's cooking-fume exhauster purification techniques does not obtain substantive progress, cigarette Gas purification efficiency is not up to always standard requirement with ontology resistance, and for environmental angle, there is also very for the design of smoke exhaust ventilator More defects also needs to be improved in a manner of all kinds of kitchen flue gas based on static technique.

Design for the following environment-friendly household smoke exhaust ventilator, it is necessary to fully take into account noise, wind pressure, air quantity, purification The Multiple factors such as rate, this soil resistance carry out parameters scientific and reasonable collocation, when being designed, need to consider kitchen Drawing smoke system is arranged from flue gas piece-rate system in two different systems, promotes centrifugal pan by the physical property of room flue gas Centrifugal force, misty elaioleucite is adequately detached with carbon black pellet object, it is using the pumping function of smoke exhaust ventilator that flue gas is complete It excludes.In design, needs fully to meet the requirement for centrifuging the technologies such as flue gas, targetedly measure is taken to promote smoke pumping The working efficiency and purifying rate of machine.

Utility model content

The technical problems to be solved in the utility model is that：For technical problem of the existing technology, this practicality is new Type provides a kind of smoke exhaust ventilator of low-noise heating negative pressure, enables to flue gas quickly through exhaust column, while reducing smoke exhaust ventilator Generated noise.

In order to solve the above technical problems, the utility model proposes technical solution be：

A kind of smoke exhaust ventilator of low-noise heating negative pressure, including petticoat pipe, exhaust column, smoke exhaust pipe and bend pipe, the bend pipe connection Between exhaust column and smoke exhaust pipe, the exhaust column is between petticoat pipe and smoke exhaust pipe, the smoke exhaust pipe connection flue or house Outside, the air inlet of the exhaust column and the opening size of air outlet are more than the diameter in exhaust column stage casing, and the exhaust column is equipped with Heating device, the heating device are installed on the tube wall of exhaust column, and the bend pipe is externally provided with pressure fan.

As a further improvement of the above technical scheme：

The exhaust column is hyperbolic-type pipe, and the side section of tube wall is at hyperbola.

The heating device is sheathed on outside the tube wall of exhaust column.

The heating device is resistance heating cylinder.

The discharge pipe of the pressure fan is located in bend pipe, and the air outlet of the discharge pipe is discharged fume against the outlet of smoke exhaust pipe The outlet of pipe is located in the intrinsic flue of building.

The discharge pipe is taper, and cone mouth is against the outlet of smoke exhaust pipe.

The host of the pressure fan is installed on outside kitchen window.

Compared with prior art, the utility model has the advantage of：

(1) smoke exhaust ventilator of the low-noise heating negative pressure of the utility model installs a heating device in exhaust column, improves and take out The temperature of wind inner tube smoke reduces exhausting overpressure, makes to increase with the pressure difference at hood mouth in exhaust column, cigarette is improved with this Gas by rate, draw in exhaust column the acceleration of deep fat cigarette with the mode of hot negative pressure self-priming and be discharged into flue, low noise.

(2) smoke exhaust ventilator of the low-noise heating negative pressure of the utility model, is equipped with pressure fan outside bend pipe, is existed with pressure fan The negative pressure that bigger is formed in smoke exhaust pipe is discharged into flue, the fan of the obstructed over-pressed fan of oil smoke to draw deep fat cigarette acceleration in exhaust column Page, low noise.

(3) smoke exhaust ventilator of the low-noise heating negative pressure of the utility model, the tube wall of exhaust column are molded into hyperbola, pass through The variation of exhausting pipe diameter and basal area increases the movement velocity of oil smoke in entire pipeline from exhaust column structure.

(4) smoke exhaust ventilator of the low-noise heating negative pressure of the utility model, heats exhaust column, and exhaust column, bend pipe It is in hot wind with smoke exhaust pipe and flows through state, flue gas is not easy to be attached to exhausting inside pipe wall, is convenient for the repair and cleaning of smoke exhaust ventilator.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Figure number explanation：

1-petticoat pipe；2-exhaust columns；3-smoke exhaust pipes；4-heating devices；5-bend pipes；51-pressure fans；511-outlet air Pipe；6-flues.

Specific implementation mode

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.

Fig. 1 shows a kind of embodiment of the smoke exhaust ventilator of the utility model low-noise heating negative pressure, including petticoat pipe 1, pumping Air hose 2, smoke exhaust pipe 3 and bend pipe 5, bend pipe 5 are connected between exhaust column 2 and smoke exhaust pipe 3, and exhaust column 2 is located at petticoat pipe 1 and smoke exhaust pipe Between 3, smoke exhaust pipe 3 is connected to outside flue 6 or house, and the air inlet of exhaust column 2 and the opening size of air outlet are more than exhaust column 2 The diameter in stage casing, exhaust column 2 are equipped with heating device 4, and heating device 4 is installed on the tube wall of exhaust column 2, and bend pipe 5 is externally provided with pressure wind Fan 51.

In the present embodiment, exhaust column 2 is hyperbolic-type pipe, and the side section of tube wall is at hyperbola, on hyperbolic-type pipe Under diameter be more than mid diameter, be more advantageous to the sucking and discharge of gas.Heating device 4 is sheathed on 2 tube wall of entire exhaust column Outside.Heating device 4 is resistance heating cylinder.Resistance heating cylinder belongs to the electrical heating for being used as being heated to pipeline or its interior medium and fills It sets, it forms temperature control unit by microcontroller and temperature sensor, also has two pieces of bearing shell shape inner metal shells, two inner metal shells An electric heating tube is respectively fixed on internal face；Also there are two the bearing shells made by Heat Conduction Material for being linked on pipeline for tool Shape is molded heat-conducting layer, and the outside wall surface and two inner metal shell internal faces for being molded heat-conducting layer fit；Also tool there are two in two metals The bearing shell shape molded heat insulation layer of shell outside wall surface fitting, sets that there are two bearing shell shape shells on two forming insulating layer outer surface；Also have As the fixing component being connected to above-mentioned heating component on pipeline.Resistance heating cylinder has thermal efficiency height, and facilitates installation, tears open The advantages of unloading is widely used in various pipeline heating occasions.

In the present embodiment, the discharge pipe 511 of pressure fan 51 is located in bend pipe 5, and the air outlet of discharge pipe 511 is against smoke exhaust pipe 3 outlet forms the hot negative pressure of bigger in entire pipeline, and flue is discharged into draw heat smoke acceleration in exhaust column 2.Smoke exhaust pipe 3 outlet is located in the intrinsic flue 6 of building.Discharge pipe 511 presses venturi (Venturi) effect, and discharge pipe 511 is made Tapered, cone mouth is against the outlet of smoke exhaust pipe 3, and for restricted flow when by the flow section of diminution, flow velocity or stream occurs in fluid Amount increases, and flow is inversely proportional with flow section, and knows the increase of flow velocity with the reduction of Fluid pressure, height by bernoulli law The fluid of speed flowing nearby will produce low pressure, to generate suction-operated.The host of pressure fan 51 is installed on outside kitchen window.Flue gas Not by the fan page of hot wind extraction fan 51, the noise that hot air draft is fanned will not be made with usage time because flue gas carries out package to flabellum Lengthening and become larger.

The preferred embodiment of above-mentioned only the utility model, does not impose any limitation on the present invention.Though So the utility model has been disclosed with preferred embodiment as above, however is not limited to the utility model.Therefore, it is every without departing from The content of technical solutions of the utility model any is simply repaiied according to the utility model technical spirit is made to the above embodiment Change, equivalent variations and modification, should all fall in the range of technical solutions of the utility model are protected.

Claims (7)

1. a kind of smoke exhaust ventilator of low-noise heating negative pressure, including petticoat pipe (1), exhaust column (2), smoke exhaust pipe (3) and bend pipe (5), institute Bend pipe (5) is stated to be connected between exhaust column (2) and smoke exhaust pipe (3), the exhaust column (2) be located at petticoat pipe (1) and smoke exhaust pipe (3) it Between, outside smoke exhaust pipe (3) the connection flue (6) or house, which is characterized in that the air inlet of the exhaust column (2) and outlet air The opening size of mouth is more than the diameter in exhaust column (2) stage casing, and the exhaust column (2) is equipped with heating device (4), the heating device (4) it is installed on the tube wall of exhaust column (2), the bend pipe (5) is externally provided with pressure fan (51).

2. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 1, which is characterized in that the exhaust column (2) is double Shaped form pipe, the side section of tube wall is at hyperbola.

3. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 2, which is characterized in that heating device (4) set Outside the tube wall of exhaust column (2).

4. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 1, which is characterized in that the heating device (4) is Resistance heating cylinder.

5. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 1, which is characterized in that pressure fan (51) goes out Air hose (511) is located in bend pipe (5), the air outlet of the discharge pipe (511) against smoke exhaust pipe (3) outlet, smoke exhaust pipe (3) Outlet is located in the intrinsic flue (6) of building.

6. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 5, which is characterized in that the discharge pipe (511) is Taper, outlet of the cone mouth against smoke exhaust pipe (3).

7. the smoke exhaust ventilator of low-noise heating negative pressure according to claim 6, which is characterized in that the master of the pressure fan (51) Machine is installed on outside kitchen window.