CN2533270Y - Silencer of engine - Google Patents

Abstract

The utility model discloses a novel muffle for the engine that includes a shell 4, head sealing boards 2 and 8, inner clapboards 3 and 6, an air inlet tube 1, a sound absorption tube 5 and an air outlet tube 7; wherein, the shell, the head sealing boards, the air inlet tube and the air outlet tube form the shape body of the muffle; the left and right inner clapboards and the sound absorption tube form a sound absorption cavity; and the wall of the sound absorption tube is full of holes. Through adding the amount of sound absorption tubes or increase the quantity of holes on the sound absorption tube wall and reduce the diameter, the effect of sound absorption is perfected. The utility model is characterized in a novel structure, nice shape, good sound absorption effect, easy making and capacity of effectively decreasing the exhaust noise of the engine. Besides, the utility model has the advantages of a small size and good sound absorption effect compared with the traditional muffle as for the engine with the same power and the same exhaust resistance.

Description

A kind of motor silencer

Technical field

The utility model relates to a kind of baffler of motor.

Background technique

At present, traditional motor silencer is made up of component such as housing, head plate, internal partition, suction tude and steam outlet pipes.As shown in Figure 1 and Figure 2: (1) suction tude, (2) head plate, (3) housing, (4) internal partition, (5) steam outlet pipe.Housing and head plate form the cavity of whole baffler, and suction tude and steam outlet pipe only play interconnect function, and internal partition is a semilune, are the staggered sound deadening of having arranged.Owing to rely on the quantity that increases internal partition to improve erasure effect, so exhaust resistance is bigger; Reduce exhaust resistance, just must increase volume.Its improvement structure becomes the circular internal partition of porous for the semilune internal partition with interlaced arrangement, but can not reach desirable erasure effect.

Summary of the invention

The purpose of this utility model provides a kind of improved baffler, and it is big that it overcomes the exhaust resistance that causes owing to the internal partition interlaced arrangement in the prior art, and the dissatisfactory shortcoming of erasure effect.

The utility model is realized with following technological scheme: the utility model is made up of component such as housing, head plate, internal partition, suction tude, steam outlet pipes.The head plate at housing and its two ends is formed muffler cavity, suction tude and steam outlet pipe are welded on respectively on the head plate at two ends, it is characterized in that: two internal partitions are arranged in parallel and are welded on the inwall of housing, in cavity, go back along continuous straight runs and be provided with the hush pipe that is covered with aperture on some root canal walls, one end of hush pipe is welded on the left internal partition, the other end is inserted in the circular hole on the right internal partition, is equipped with inlet hole at the centre bit of left internal partition, and left and right internal partition and hush pipe are formed silencing cavity.At least four of hush pipes also are evenly distributed in the muffler cavity, increase the quantity in hole on the quantity of hush pipe or the tube wall and reduce the aperture to improve erasure effect.For low power motor, use the hush pipe of lesser amt can satisfy the noise reduction requirement, then use the hush pipe of a greater number can satisfy the noise reduction requirement for powerful motor.

Owing to adopted such scheme, make the utlity model has simple in structure, volume is little, exhaust resistance is little, good muffling effect, the advantage that is easy to make.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1, Fig. 2 are prior art muffler structure schematic representation;

Fig. 3 is the utility model structural representation;

Fig. 4 is the sectional drawing of Fig. 3 A-A.

Among the figure, 1. suction tude, 2. left head plate, 3. left internal partition, 4. housing, 5. hush pipe, 6. right internal partition, 7. steam outlet pipe, 8. right head plate, 9. inlet hole.

Embodiment

As Fig. 2, shown in Figure 3: cylindrical shell (4), head plate (2), (8) form the outer chamber of baffler, suction tude (1) is welded on the head plate at two ends, the left and right sides with steam outlet pipe (7), left side internal partition (3), right internal partition (6) and hush pipe (5) are formed silencing cavity, on the tube wall of silencing cavity (5), evenly be covered with aperture, inlet hole (9) is in the central position of left internal partition (3), in the present embodiment, hush pipe (5) adopts 4.

Claims (2)

1, a kind of motor silencer, it comprises housing (4), the head plate (2) at housing (4) two ends, (8), suction tude (1), steam outlet pipe (7), the head plate (2) at housing (4) and its two ends, (8) form muffler cavity, suction tude (1) and steam outlet pipe (7) are welded on the head plate (2) at two ends respectively, (8) on, it is characterized in that two internal partitions (3), (6) be arranged in parallel and be welded on the inwall of housing (4), in cavity, go back along continuous straight runs and be provided with the hush pipe (5) that is covered with aperture on some root canal walls, one end of hush pipe is welded on the left internal partition (3), the other end is inserted in the circular hole on the right internal partition (6), is equipped with inlet hole (9) at the centre bit of left internal partition (3).

2, motor silencer according to claim 1 is characterized in that at least four of hush pipes and is symmetrically and evenly being distributed in the muffler cavity.

Images