CN2573067Y - Catalyst support structure - Google Patents

Abstract

The utility model relates to a catalyst carrier structure which is a sheet-shaped carrier. A plurality of wavy groove parts staggered at intervals are formed on the carrier and are divided into grooves and tongues which fluctuate up and down. An outer flow passage and an inner flow passage which are communicated with each other are formed between the grooves and the tongues, and the sheet-shaped carrier is arranged in a silencer arranged on the exhaust end of an engine in a bending and folding mode. Consequently, the sheet-shaped carrier with the shape adopts the inner flow passage and the outer flow passage as air passages used for the circulation of exhaust air, and the exhaust air is completely dispersed by striking to form a burbling state to obtain the effect of enhancing the covering amount of catalyst and the efficiency of purifying the exhaust air. Thus, the problem that a small engine can not lead the exhaust air to be completely purified is solved.

Description

The catalyst carrier structure

[technical field]

The utility model relates to a kind of catalyst carrier structure, refers to a kind of especially at the designed catalyst carrier structure of the little engine of air displacement below 100C.C. especially.

[background technique]

As everyone knows, what produce the waste gas of incomplete combustion all entirely during the engine running, known harmful matter in waste gas directly effluxes and causes atmospheric pollution, general all can in the outlet pipe of engine or anechoic chamber, group establish Catalytic Converter, utilize the precious metal of coating in the Catalytic Converter, harmful matter in the waste gas is purified, to improve the quality of toxic emission.And know that known to employed engines of equipment such as mowing machine, electric saw or speedboats, greatly partly all below 100C.C., therefore, generally be commonly called as this type of engine again is little engine (SmallEngine) to air displacement.Because the air displacement of this little engine is too small, does not nearly all install outlet pipe, only has in engine exhaust end group and establishes a baffler.And less because of row's tolerance of little engine, therefore, the baffler volume that is disposed is also less.Utilize the small-sized baffler of this kind to reduce the exhaust noise of engine, and utilize the interior limited volume of the small-sized baffler of this kind to organize and establish small-sized Catalytic Converter, the harmful matter in the purifying exhaust air of relying.Yet, the little engine of this kind air displacement below 100C.C., because the compression ratio of its engine is less, therefore, than the phenomenon of the easier generation incomplete combustion of general engine, to such an extent as to the concentration that contains hazardous substance in the discharging waste gas is higher.If only use scroll-type (the being honeycomb) carrier of known general-purpose or mesh pottery magnetic carrier to use as the converter of coating catalyst, under its volume space limited in small-sized anechoic chamber, no matter why group establishes quantity and volume, but that the carrier area of its coating catalyst is still disliked is not enough.

From the above, in the streets the per surface area of catalyst carrier still has not foot phenomenon, to such an extent as to catalyst coating amount can't effectively improve.This problem occurs in the lower introductory note of compression ratio especially easily and holds up on the configuration surroundings, forces to organize the catalyst carrier that is provided with limit coating area in the space limited in small-sized anechoic chamber is only arranged, and causes the inapparent environmental protection leak of exhaust purification efficiency.

Therefore, at above-mentioned problem, this creator spy specializes in automobile, motorcycle parts product years of researches, develops and produce experience with it, constantly thinks hard, studies and improve, and then grind and create the utility model, to improve above-mentioned problem.

[summary of the invention]

The utility model is intended to provide a kind of catalyst carrier structure, particularly designed at the little engine of air displacement below 100C.C., can this only the baffler group of the little chamber volume of tool establish in the environment, group is put the carrier with big per surface area, catalyst coating amount and waste gas purifying efficiency thereof are improved, and relying solves not prominent question of float tolerance engine exhaust purification efficiency.

Technical solution adopted in the utility model is: a kind of catalyst carrier structure, and it is characterized in that: it is to be a sheet carrier, is formed with the wavy slot part of several interleaved on the carrier; This slot part is groove and a tongue of dividing into dipping and heaving; And be formed with outer flow passage and the inner flow passage that is connected between this groove and tongue.

Further feature of the present utility model also is: this chip carrier is that the bending fold group is located in the baffler of engine exhaust end.

As seen, the utility model is to be that little engine below 100C.C. is designed at exhaust especially, can be under the situation that the assembling environment is restricted, by above technological scheme by the air flue of inside and outside runner as waste gas circulation, waste gas is broken up fully the state that forms flow-disturbing, reach the coating amount that improves catalyst and the efficient of purifying exhaust air thereof, hold up the easily effect of the incomplete problem of generation waste-gas cleaning of institute to solve introductory note.

Further specify the utility model below in conjunction with drawings and Examples.

[description of drawings]

Fig. 1 cuts open schematic representation for the interior office of small-sized baffler that vehicle group of the present utility model is located at little engine.

Fig. 2 is along 2-2 line cut-away view shown in Figure 1.

Fig. 3 is the sectional perspective schematic representation of 3 sections shown in Figure 1.

Fig. 4 cuts open schematic representation for the office of 3 sections shown in Figure 1.

[embodiment]

See also illustrated in figures 1 and 2, this figure is that schematic representation cuts open in the office that a kind of catalyst carrier structure group of the present utility model is located in the small-sized baffler 20 of little air displacement engine, be to include: one group is located at small-sized baffler 20 and another chip carrier 30 that is the bending fold shape that exhaust end 1 held up in introductory note, wherein

This small-sized baffler 20 is to have a chamber 24 (as shown in Figure 1), this chamber 24 is to utilize a dividing plate 21 to separate to be formed with a suction chamber 22 and an exhaust chamber 23 (as shown in Figure 2), this suction chamber 22 is to have an intake duct 221, this exhaust chamber 23 has an air outlet flue 231, the import of this intake duct 221 is to hold up exhaust end 1 with introductory note to link to each other, and the outlet of this air outlet flue 231 is directly to be communicated in the ambient atmosphere.

See also Fig. 3 and shown in Figure 4, this chip carrier 30 is crooked foldings on the stomidium that places (as shown in Figure 1) aforementioned barriers 21 (as shown in Figure 2), and this carrier 30 as one kind is the inner that is close to air outlet flue 231, it on this carrier 30 as one kind again the wavy slot part 31 (as shown in Figure 3) that is formed with several interleaved, this slot part 31 is the grooves 33 and tongue 32 that are divided into dipping and heaving, and this interlaced groove 33 and 32 of tongues are formed with outer flow passage 34 and the inner flow passage 35 (as shown in Figure 3 and Figure 4) that is interconnected.

The chip carrier 30 of above-mentioned formation has bigger per surface area, and therefore, coating catalyst 5 (as shown in Figure 3) on the groove face of the positive and negative end face groove of carrier 30 as one kind 33 and tongue 32 can significantly improve the coating amount of catalyst.

According to the above-mentioned example of the utility model, 1 exhaust gas discharged 4 of engine exhaust end from childhood, be to import in the small-sized baffler 20 (as shown in Figure 2) from intake duct 221, and be located at outer flow passage 34 and the inner flow passage 35 that intake duct 221 the other ends are the carrier 30 as one kind of bending fold shape via group and enter (cooperating Fig. 3 and shown in Figure 4), waste gas 4 can be broken up formation flow-disturbing state (cooperating Fig. 3 and shown in Figure 4) by outer flow passage 34 and inner flow passage 35, make the waste gas 4 behind the flow-disturbing can in carrier 30 as one kind, increase the time of fully reacting, and then improve the efficient of the harmful matter in the catalytic control waste gas 4 with catalyst.Therefore,, all have and improve catalyst coating area and cause under the double utility of waste gas flow-disturbing, the efficient of purifying exhaust air is obviously improved even if group is established catalyst carrier of the present utility model in the small-sized baffler 20 of little engine.

The above, the embodiment who proposes for the convenient explanation of the utility model only, but structure characteristics of the present utility model is not limited thereto anyly is familiar with this operator in the utility model field, can think easily and variation or modification, all belong to the category that the utility model is contained.

In sum, the utility model is to be that little engine below 100C.C. is designed at exhaust especially, can be under the situation that the assembling environment is restricted, improve the coating amount of catalyst and the efficient of purifying exhaust air thereof, hold up the easily incomplete problem of generation waste-gas cleaning of institute to solve introductory note, so possessed the usability on the industry, and the utility model structure was not open yet, so propose utility application.

Claims (2)

1. a catalyst carrier is constructed, and it is characterized in that: it is to be a sheet carrier (30), is formed with the wavy slot part (31) of several interleaved on the carrier; This slot part (31) is a groove (33) and tongue (32) of dividing into dipping and heaving; And be formed with the outer flow passage (34) and inner flow passage (35) that are connected between this groove (33) and tongue (32).

2. catalyst carrier according to claim 1 structure is characterized in that: this chip carrier (30) be the bending fold group be located at engine exhaust end (1) baffler (20) in.

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