CN200989231Y

CN200989231Y - Spiral-tube exhausting back pressure device

Info

Publication number: CN200989231Y
Application number: CN 200620158657
Authority: CN
Inventors: 彭荣昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-30
Filing date: 2006-11-30
Publication date: 2007-12-12
Anticipated expiration: 2016-11-30

Abstract

The utility model discloses a helical tube type air exhaust pressure return device, comprising a helical tube, an upper connecting seat and a lower connecting seat, the helical tube has an inner convex lips bulging from the outside to the inside, the upper convex lip of the inner convex lips is the most shallow, the lower convex lip of the inner convex lips is the deepest, and a horn mouth is formed in the helical tube. The utility model takes the principle of the Bernoulli Law as the base, and the formula of the Bernoulli Law is Q=Phi1xV1=Phi2xV2. Therefore, the upper convex lip of the inner convex lips in the helical tube is the most shallow, the depth of the inner convex lips is deeper and deeper form the upper to the lower, the depth of the lower convex lip in the inner convex lips is the deepest, which forms a horn mouth, when the exhaust air flows from the upper to the lower, the sectional area Phi of the upper convex lip is the largest, and the sectional area Phi of the lower convex lip is the smallest, thus a presser return funtion and the design of higher torque value at a low speed is obtained. While in use, the utility model can obtain the funtion of lower fuel consumption.

Description

Spiral-type exhaust back pressure device

Technical field

The utility model relates to a kind of spiral-type exhaust back pressure device.

Background technique

Prior art intercepts with large-diameter pipe switching small-bore pipe or with dividing plate, reaches the back pressure effect.There is the gas flow rate deficiency in this back pressure device, the shortcoming of influence horsepower output.

Summary of the invention

The purpose of this utility model provides the spiral-type exhaust back pressure device that can reduce fuel consumption in a kind of the use.

For achieving the above object, the utility model is taked following design proposal: a kind of spiral-type exhaust back pressure device, it is characterized in that, it comprises: volute, upper connecting base and lower connecting base, volute has by outer convex lip toward convex, epirelief lip in the convex lip is the most shallow, and following protruding lip is the darkest, becomes a horn mouth in the volute.

The utility model has the advantages that: the utility model spiral-type exhaust back pressure device is owing to adopt above design proposal, it meets Bai Nuli law principle, Bai Nuli law formula: Q= 1 * V1= 2 * V2, wherein, Q is a flow, and  is a sectional area, and V is a flow velocity, epirelief lip in the convex lip in the utility model is the most shallow, down protruding lip is the darkest, becomes a horn mouth in the volute, when exhaust from top to bottom, epirelief lip  sectional area maximum, following protruding lip  sectional area minimum, during exhaust, gas produces back pressure because of sectional area by the slow discharge of big and little generation, therefore when starting, low grade can increase torsion, when low speed driving,, torsion obtains, when running at high speed, because of back pressure obtains higher horsepower than low fuel consumption because of promoting, make acceleration smooth and easy, obtain than low fuel consumption.

Description of drawings

Fig. 1 is the utility model spiral-type exhaust back pressure device exploded view

Fig. 2 is the utility model spiral-type exhaust back pressure device section of structure

Fig. 3 is that the utility model spiral-type exhaust back pressure device is implemented figure

Embodiment

For ease of the further purpose means of understanding the present invention, attached now with preferred embodiment figure detailed description as back:

See also shown in Fig. 1 spiral-type exhaust back pressure device exploded view; Tie point 1-5 combines with joint seat tie point 2-5 on the last joint seat 2 ' on the volute 1 top volute, tie point 1-6 combines with the joint seat tie point 2-1 of lower connecting base 2 under the volute, epimere outlet pipe 3, combine with nut with screw rod 5 with last joint seat screw hole 2-6 via epimere outlet pipe screw hole 3-1, hypomere outlet pipe 4 combines with screw rod 5 nut 5-1 with following joint seat screw hole 2-3 via hypomere outlet pipe screw hole 4-1, volute 1 has volute groove 1-1, from outside to inside from top to bottom, from-shallow-to-deep, topmost the most shallow bottom is the darkest, thereby topmost groove is the most shallow, and bottom groove is the darkest.

See also shown in Fig. 2 spiral-type exhaust back pressure device section of structure; Shown in the interior 3D view of top enlarged view section pipe, volute has convex lip 1-2, the epirelief lip 1-3 degree of depth of convex lip 1-2 is the most shallow, the following protruding lip 1-4 degree of depth of convex lip 1-2 is the darkest, from top to bottom and deeply, see also shown in the enlarged view 2D view of below, volute 1 combines with last joint seat 2 ' and following joint seat 2.

See also shown in Fig. 3 spiral-type exhaust back pressure device execution figure; Volute 1 and last outlet pipe 3, following outlet pipe 4 usefulness screw rods 5, nut 5-1 combine, exhaust from top to bottom, shown in the arrow, the horn mouth that is formed through volute 1 epirelief lip 1-3, time protruding lip 1-4, and obtain the result of Bai Nuli law.

Claims

1, a kind of spiral-type exhaust back pressure device is characterized in that it comprises: volute, upper connecting base and lower connecting base, volute have by outer convex lip toward convex, and the epirelief lip in the convex lip is the most shallow, and following protruding lip is the darkest, become a horn mouth in the volute.