CN205323557U

CN205323557U - Novel venturi blender

Info

Publication number: CN205323557U
Application number: CN201520936935.0U
Authority: CN
Inventors: 黄雅婷; 唐中; 韩龙章; 吴德超
Original assignee: Chongqing Push Mechanism Co Ltd
Current assignee: Chongqing Push Mechanism Co Ltd
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2016-06-22
Anticipated expiration: 2025-11-23

Abstract

The utility model discloses a novel venturi blender, set up the gas intake duct on the pipeline outside including outer pipeline, interior conduit and perpendicular, form confined circuit chamber between outer pipeline and the interior conduit, this interior conduit includes necking segment, aditus laryngis section and flaring section, the aditus laryngis section evenly is provided with the inlet port along the circumference round, the inlet port sets up along the slope of interior conduit wall, the gas intake duct is the pipeline of convergent type. It gets into the sprue in the inlet port of aditus laryngis section to make the gas get into circuit chamber rethread round evenly distributed from the gas intake duct earlier, join with the incoming air that enters the mouth from the sprue, realized in smooth and easy more evenly admitting air in full week of aditus laryngis guaranteeing that the gas is admitted air, the realization cushions the gas, the steady voltage, it stabilizes pressure differential to make the circuit chamber form with the sprue, the even stability in sprue flow field has been maintain, inlet port slope in the aditus laryngis section sets up, can make the gas be certain angle converges, reduce the influence of admitting air to the air, the air current collision loss has been reduced.

Description

Novel venturi mixer

Technical field

This utility model relates to a kind of Novel venturi mixer, belongs to combiner technique field。

Background technology

Venturi mixer is assemblied on gas machine air inlet pipeline, and air enters in blender with combustion gas and mixes, and primarily serves the purpose of mixing two gas, and the gas componant making exit is uniform。When gas inlet supercharger speed is relatively low, the negative pressure formed at runner is less, and combustion gas has certain pressure under normal circumstances, at this moment air inlet can be caused to block, affect air-fuel ration control or even in-cylinder combustion, and when gas inlet insufficient pressure or fluctuation are bigger, gas inlet can be caused again not smooth, gas machine cannot stable operation。

Existing venturi mixer, there is aperture pipe throat is circumferentially arranged, this aperture is perpendicular with air-flow flow direction, this structure can overcome certain air pressure to mix with empty body with assisted gas entrance air flue, but the relatively steady of combustion gas and air inlet pressure can not be solved, still cannot ensure that air inlet is unobstructed and gaseous mixture uniform。

Utility model content

In consideration of it, this utility model provides a kind of Novel venturi mixer, by the optimization of pipeline is designed, reduce airflow collision loss, realize the all-round more uniform air inlet of aditus laryngis, maintain the uniform and stable of sprue flow field air pressure, it is ensured that air inlet is unobstructed and gaseous mixture uniform。

Technical scheme:

A kind of Novel venturi mixer, including Outer Tube, interior conduit and the air intake duct that is vertically set on Outer Tube, said inner tube road is arranged on inside Outer Tube, this interior conduit includes reducing section, aditus laryngis section and flared section, the circuit chamber of closing is formed between described Outer Tube and interior conduit, described reducing section, aditus laryngis section and flared section are in this circuit intracavity, and a described aditus laryngis section circumferentially circle is evenly arranged with air inlet, and described air inlet is obliquely installed along inner duct wall。It is so designed that, make combustion gas first enter circuit chamber from air intake duct and be uniformly distributed in the air inlet entrance sprue of aditus laryngis section again through a circle, ensureing that gas inlet is simultaneously achieved the all-round more uniform air inlet of aditus laryngis smoothly, realize combustion gas buffering, voltage stabilizing, make circuit chamber and sprue form stable pressure reduction, maintain the uniform and stable of sprue flow field, air inlet in aditus laryngis section is obliquely installed, combustion gas can be made to conflux at an angle, reduce the impact on air inlet, decrease airflow collision loss。

As preferably, the angle of inclination of described air inlet is 20 °～45 °。Combustion gas enters in sprue aditus laryngis by certain angle of inclination aperture, it is to avoid combustion gas is full of the fuel gas inlet place of sprue, block air air inlet, and combustion gas by aperture time accelerate, more air can be played drainage。

As preferably, described gas inlet passage is the pipeline of gradual shrinkage。Gas inlet passage is arranged to tapered fashion, when ensureing that charge flow rate makes combustion gas can speed up entrance circuit chamber constant, with assisted gas air inlet。

As preferably, the reducing angle of described reducing section is 25 °～35 °, and the flaring angle of described flared section is 10 °～25 °。Flaring angle is less than reducing angle, it is possible to accelerate when ensureing air by aditus laryngis section to form negative pressuren zone, it is possible to the combustion gas come in from air inlet is played drainage, and easily manufactures。

As preferably, described reducing section, aditus laryngis section and flared section are that smooth arc transition connects。Ensure that the airflow smooth of sprue。

Beneficial effect:

(1) sprue is made first to contract and is expanded shape afterwards, and air flows into aditus laryngis place to accelerate combustion gas is played drainage；

(2) combustion gas is after the voltage stabilizing of circuit chamber, it is possible to make circuit chamber stable with the pressure reduction of aditus laryngis section；

(3) combustion gas is by air inlet again after circuit voltage stabilizing, and gaseous-pressure fluctuation is had certain cushioning effect；

(4) combustion gas is introduced into circuit chamber and is uniformly distributed in the air inlet inflow of aditus laryngis section again through a circle, it is achieved that the all-round more uniform air inlet of aditus laryngis section, air is played drainage, maintains the uniform and stable of sprue flow field；

(5) air inlet in aditus laryngis section is obliquely installed, and makes combustion gas conflux at an angle, reduces the impact on air inlet, decreases airflow collision loss；

(6) gas inlet passage makes tapered fashion, makes combustion gas accelerate into circuit chamber, assisted gas air inlet；

(7) simple in construction, it is easy to manufacture。

Accompanying drawing explanation

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

Fig. 2 is the structural representation of the air inlet in Fig. 1；

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing, this utility model is described further。

Novel venturi mixer as depicted in figs. 1 and 2, including Outer Tube 1, interior conduit 2 and the air intake duct 3 being vertically set on Outer Tube 1, it is internal that said inner tube road 2 is arranged on Outer Tube 1, this interior conduit 2 includes reducing section 21, aditus laryngis section 22 and flared section 23, this reducing section 21, aditus laryngis section 22 and flared section 23 are smooth arc transition and connect, the reducing angle of described reducing section 21 is 25 °～35 °, the flaring angle of described flared section 23 is 10 °～25 °, flaring angle is less than reducing angle, ensure that air accelerates to form negative pressuren zone when passing through aditus laryngis section 22, combustion gas can be played drainage。

The inlet end of described Outer Tube 1 and interior conduit 2 is bolted, and outlet side is affixed with interference fit, forms the circuit chamber 4 of closing between Outer Tube 1 and interior conduit 2 after being connected, and described reducing section 21, aditus laryngis section 22 and flared section 23 are in this circuit chamber 4。Circuit chamber 4 can realize the buffering to combustion gas, voltage stabilizing, makes to be formed between circuit chamber 4 and sprue to stablize pressure reduction, maintains the uniform and stable of sprue flow field。

It can also be seen that from Fig. 1 and Fig. 2, a described aditus laryngis section 22 circumferentially circle is evenly arranged with air inlet 220, described air inlet 220 is obliquely installed along inner duct wall, angle of inclination is 20 °～45 °, air inlet 220 is obliquely installed, combustion gas can be made to conflux at an angle, reduce the impact on air inlet, decrease airflow collision loss, described air intake duct 3 is the pipeline of gradual shrinkage, air intake duct makes tapered fashion, combustion gas can be made to accelerate into circuit chamber 4, with assisted gas air inlet, the junction of the outlet side of this air intake duct 3 and Outer Tube 1 is smooth circular sliding slopes, it is beneficial to combustion gas enter。The periphery, two ends of described Outer Tube 1 and the entrance point periphery of air intake duct 3 are circumferentially additionally provided with the flange hole being connected with other structures。

Claims

1. a Novel venturi mixer, it is characterized in that: include Outer Tube (1), interior conduit (2) and the gas inlet passage (3) being vertically set on Outer Tube (1), it is internal that said inner tube road (2) is arranged on Outer Tube (1), this interior conduit (2) includes reducing section (21), aditus laryngis section (22) and flared section (23), the circuit chamber (4) of closing is formed between described Outer Tube (1) and interior conduit (2), described reducing section (21), aditus laryngis section (22) and flared section (23) are in this circuit chamber (4), described aditus laryngis section (22) circumferentially circle is evenly arranged with air inlet (220), described air inlet (220) is obliquely installed along inner duct wall。

2. Novel venturi mixer according to claim 1, it is characterised in that: the angle of inclination of described air inlet (220) is 20 °～45 °。

3. Novel venturi mixer according to claim 1 and 2, it is characterised in that: the pipeline that described gas inlet passage (3) is gradual shrinkage。

4. Novel venturi mixer according to claim 3, it is characterised in that: the reducing angle of described reducing section (21) is 25 °～35 °, and the flaring angle of described flared section (23) is 10 °～25 °。

5. Novel venturi mixer according to claim 4, it is characterised in that: described reducing section (21), aditus laryngis section (22) and flared section (23) they are smooth arc transition。