CN203383884U

CN203383884U - Automotive catalytic converter exhaust-gas inner-circulation device

Info

Publication number: CN203383884U
Application number: CN201320368436.7U
Authority: CN
Inventors: 施晓君
Original assignee: JIANGSU PIONEER TECHNOLOGY CO LTD
Current assignee: JIANGSU PIONEER TECHNOLOGY CO LTD
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2014-01-08
Anticipated expiration: 2023-06-26

Abstract

The utility model relates to an automotive catalytic converter exhaust-gas inner-circulation device comprising a shell (2) wrapped outside a catalytic converter. A cavity is formed between the shell (2) and an inner shell of the catalytic converter. Air holes are formed in a left end face and a right end face of the inner shell (1) of the catalytic converter respectively, the left end face and the right end face of the inner shell (1) respectively refer to a first end face (1.1) and a second end face (1.2), and first front air holes (1.3) and second rear air holes (1.4) are formed in the first end face (1.1) and the second end face (1.2) respectively. The automatic catalytic converter exhaust-gas inner-circulation device is high in purification effect.

Description

A kind of automotive catalytic converter waste gas internal circulation apparatus

Technical field

The utility model relates to a kind of circulation means, especially relates to a kind of device on automobile, the waste gas of discharging through catalytic converter being carried out to the secondary cycle purification, belongs to the automobile environment-protection equipment technical field.

Background technique

At present, along with the increase of automobile pollution, the propelling of environmental consciousness, purifying vehicle exhaust has been subjected to the attention of State-level; Wherein vehicle exhaust catalytic converter is a kind of the most frequently used equipment, still, finds in actual use, and during common catalytic converter directly is disposed to air by it after tail gas is carried out to the primary purification processing, thereby purification ratio is also not thorough.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and the automotive catalytic converter waste gas internal circulation apparatus that a kind of purifying effect is higher is provided.

The purpose of this utility model is achieved in that a kind of automotive catalytic converter waste gas internal circulation apparatus, described device includes the shell be wrapped in outside catalytic converter, and form a cavity between the inner casing of shell and catalytic converter, on the end face of two of the left and right of the inner casing of described catalytic converter, be respectively arranged with pore.

A kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus, the left and right end face of described inner casing is respectively end face one and end face two, is respectively arranged with front pore one and posterior spiracle two on described end face one and end face two.

A kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus, all tapered settings of described end face one and end face two.

A kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus, the two ends of described inner casing are connected with respectively connecting tube and form suction tude and steam outlet pipe, and the front pore one arranged on described end face one is near connecting tube.

A kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus, the posterior spiracle two arranged on described end face two is the setting of long and narrow dress shape.

Compared with prior art, the beneficial effects of the utility model are:

The utility model again sucks in catalytic converter and carries out circularly purifying by cavity by the tail gas by after primary purification, thereby has improved the purification ratio to tail gas, more contributes to improve its purifying effect.

The accompanying drawing explanation

The structural representation that Fig. 1 is a kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus (partly cuing open figure).

The schematic diagram at the A place that Fig. 2 is a kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus.

The schematic diagram at the B place that Fig. 3 is a kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus.

The gas circulation schematic diagram that Fig. 4 is a kind of automotive catalytic converter waste gas of the utility model internal circulation apparatus.

Wherein:

Inner casing 1, shell 2, connecting tube 3, oxidation catalyst 4, metal sponge type catalyst 5, triple effect type catalyzer 6, thermal insulating pad 7, back-up ring 8;

End face 1, end face 2 1.2, front pore 1, posterior spiracle 2 1.4.

Embodiment

Referring to Fig. 1 ~ 3, a kind of automotive catalytic converter waste gas internal circulation apparatus that the utility model relates to, described device includes the shell 2 be wrapped in outside catalytic converter, and form a cavity between the inner casing 1 of shell 2 and catalytic converter, on the end face of two of the left and right of the inner casing 1 of described catalytic converter, be respectively arranged with pore;

Above-mentioned is the inventive concept of this patent, the principle of its utilization is, when waste gas enters catalytic converter, because the volume expansion increases, according to equation of state of gas PV=NRT, in temperature T, never change and molal quantity N and gas constant R when all constant, when volume V increases, its pressure P can reduce naturally, therefore can form a negative pressure at the suction port place of catalytic converter; Simultaneously, at catalytic converter air inlet/outlet place, owing to adopting the mode that closes up and give vent to anger, be equivalent to the tail gas after primary purification is compressed, the same with above-mentioned analysis, its volume V is suddenly because compression reduces, and corresponding pressure P increases naturally, therefore at place, catalytic converter air outlet, forms a malleation; Therefore in the cooperation by malleation and negative pressure, the pore that the tail gas of catalytic converter air outlet ejection will be offered by inner casing 1 on the end face of air outlet enters in the cavity between the inner casing 1 of shell 2 and catalytic converter, and the pore of offering on the end face at suction port by inner casing 1 subsequently enters to catalytic converter and carries out double purification;

The improvement that those skilled in the art do according to above-mentioned formation is all within the protection domain of this patent, below for Fig. 1 ~ 3, set forth an embodiment, it should be noted that, this embodiment is only an optimized project of this patent, and the protection domain of this patent comprises but is not limited only to this embodiment;

A kind of automotive catalytic converter waste gas internal circulation apparatus, described device includes the shell 2 be wrapped in outside catalytic converter, concretely, described catalytic converter includes the inner casing 1 be wrapped in shell 2, and form a cavity between shell 2 and inner casing 1, the two ends of described inner casing 1 are connected with respectively connecting tube 3 and form suction tude and steam outlet pipe (it is to be noted: those skilled in the art can use connecting tube to form suction tude and steam outlet pipe, also can be directly at the air outlet of inner casing 1 and suction port place, being wrapped up the structure connection mouths such as flange directly is connected on the tail gas steam outlet pipe of automobile, no matter which kind of mode it adopts, all belong to design of the present invention, all within the protection domain of this patent), the left and right end face of inner casing 1 is respectively end face 1 and end face 2 1.2, and all tapered settings of end face 1 and end face 2 1.2, be respectively arranged with front pore 1 and posterior spiracle 2 1.4 on described end face 1 and end face 2 1.2, and the front pore 1 arranged on end face 1 arranges near connecting tube 3, so that entering in inner casing 1 faster, more tail gas carries out double purification, the posterior spiracle 2 2.4 arranged on end face 2 2.2 is long and narrow setting (as ellipse), so that the tail gas that connecting tube 3 is discharged more enters cavity via posterior spiracle 2 2.4, thereby raising purifying effect, in addition, be provided with oxidation catalyst 4, metal sponge type catalyst 5 and triple effect type catalyzer 6 in described inner casing 1, and isolated by thermal insulating pad 7 between the inwall of oxidation catalyst 4, metal sponge type catalyst 5 and triple effect type catalyzer 6 and inner casing 1, isolated by back-up ring 8 between oxidation catalyst 4, metal sponge type catalyst 5 and triple effect type catalyzer 6,

Referring to Fig. 4, during use, tail gas carries out purifying for the first time in inner casing 1 through the connecting tube 3 in left side, with the connecting tube 3 by right side, discharge, when discharging, under the cooperation of the positive/negative-pressure of above-mentioned principle analysis part, the posterior spiracle two 1.4 of a tail gas part on end face 2 1.2 of discharging carries out the cavity between shell 2 and inner casing 1, the tail gas pore 1 from end face 1 that enters subsequently cavity is discharged and is purified in this enters inner casing 1, by above-mentioned circularly purifying, further improves its purifying effect.

Claims

1. an automotive catalytic converter waste gas internal circulation apparatus, it is characterized in that: described device includes the shell (2) be wrapped in outside catalytic converter, and form a cavity between the inner casing (1) of shell (2) and catalytic converter, on the end face of two of the left and right of the inner casing of described catalytic converter (1), be respectively arranged with pore.

2. a kind of automotive catalytic converter waste gas internal circulation apparatus as claimed in claim 1, it is characterized in that: the left and right end face of described inner casing (1) is respectively end face one (1.1) and end face two (1.2), is respectively arranged with front pore one (1.3) and posterior spiracle two (1.4) on described end face one (1.1) and end face two (1.2).

3. a kind of automotive catalytic converter waste gas internal circulation apparatus as claimed in claim 2, is characterized in that: described end face one (1.1) and all tapered settings of end face two (1.2).

4. as a kind of automotive catalytic converter waste gas internal circulation apparatus as described in claim 1,2 or 3, it is characterized in that: the two ends of described inner casing (1) are connected with respectively connecting tube (3) and form suction tude and steam outlet pipe, and the upper front pore arranged (1.3) of described end face one (1.1) is near connecting tube (3).

5. a kind of automotive catalytic converter waste gas internal circulation apparatus as claimed in claim 4, it is characterized in that: the upper posterior spiracle two (1.4) arranged of described end face two (1.2) is the setting of long and narrow dress shape.