Engine noise reduction air pipe capable of preventing low-temperature icing

Abstract

The utility model discloses an engine noise reduction air pipe capable of preventing low-temperature icing, which comprises a pipe body, a silencer is arranged in the pipe body, the silencer is provided with five sections of sealing rings, the sealing rings are hermetically connected with the inner wall of the pipe body to form a plurality of sections of noise reduction cavities, notches are arranged on the outer sides of the three sections of sealing rings at the rear end to enable the noise reduction cavities at the rear end to be communicated to form a communication cavity, and the communication cavity is communicated with the silencer. A heating cavity communicated with the communicating cavity is formed in the pipe body, a heating structure is installed on the side, close to the heating cavity, of the pipe body, liquid in the heating cavity and liquid in the communicating cavity form a whole after being frozen, and after heat generated by the heating structure is conducted to the heating cavity through the pipe body, ice is heated to be melted in an accelerated mode. Therefore, the problem that crushed ice enters the engine is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine, in particular to a sound attenuation air pipe. BACKGROUND

[0002] At present, the engine air pipe is provided with a muffler, which has multiple interval sealing rings, divides the air pipe into multiple cavities, each cavity and the air pipe form a concave cavity with the side opening to the center, when the engine backfiring liquid to the air pipe, the liquid will form in the concave cavity, and in cold areas, the liquid is easy to freeze, when the engine starts, the ice cannot be completely melted in time, and the broken ice enters the engine, which affects the normal operation of the engine. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a low temperature ice prevention engine sound attenuation air pipe.

[0004] The utility model adopts the technical scheme that solves its technical problem:

[0005] A low temperature ice prevention engine sound attenuation air pipe, including the pipe body, the pipe body is provided with the muffler, the muffler is provided with five sealing rings, the sealing ring is sealed with the inner wall of the pipe body and is connected, forms multiple sound attenuation cavities, wherein the outer side of the three sealing rings of the rear end is provided with a notch, so that the sound attenuation cavities of the rear end are communicated to form a communication cavity, a heating cavity is arranged in the pipe body and communicated with the communication cavity, and a heating structure is arranged on one side of the pipe body close to the heating cavity.

[0006] The muffler is provided with a cover plate, and the cover plate is installed on the heating cavity.

[0007] A plurality of aligned through holes are arranged on the cover plate.

[0008] The heating structure includes a mounting seat for fixing outside the pipe body, the heating structure is installed in the mounting seat, an electric connection part is arranged on the heating structure, and a plug-in seat corresponding to the electric connection part is arranged on the mounting seat.

[0009] The interval between the sealing rings gradually decreases from the inlet to the outlet of the pipe body.

[0010] The utility model discloses an advantageous effect is: the utility model discloses the sound absorber is installed in the pipe body, and the sound absorber is provided with five sealing rings, and the sealing ring is sealedly connected with the inner wall of pipe body, forms multiple sound absorption cavities, wherein the outside of three sealing rings of rear end is provided with the notch, makes the sound absorption cavity of rear end intercommunication and forms the intercommunication cavity, and the heating cavity that communicates with the intercommunication cavity is arranged in the pipe body, and the heating structure is installed on one side of pipe body and is close to the heating cavity, and after the liquid in the heating cavity and intercommunication cavity freezes and forms a whole, the heat generated by heating structure is conducted to the heating cavity through the pipe body, and then the ice is heated and accelerated to melt, thereby solving the problem that the broken ice enters the engine interior. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model is further illustrated below in connection with the drawings and examples.

[0012] Fig. 1 It is the structure diagram of the utility model;

[0013] Fig. 2 It is the sectional view of the utility model;

[0014] Fig. 3 It is the structure diagram of sound absorber. DETAILED DESCRIPTION

[0015] Referring Figs. 1-3 An engine sound-absorbing air pipe preventing low-temperature icing, comprising a pipe body 1, a sound absorber 2 is installed in the pipe body 1, the sound absorber 2 is provided with five sealing rings 3, the sealing ring 3 is sealedly connected with the inner wall of pipe body 1, forms multiple sound absorption cavities 5, wherein the outside of three sealing rings 3 of rear end is provided with the notch 4, makes the sound absorption cavity 5 of rear end intercommunication and forms the intercommunication cavity 6, the heating cavity 7 that communicates with the intercommunication cavity 6 is arranged in the pipe body 1, the heating structure 8 is installed on one side of pipe body 1 and is close to the heating cavity 7, after the liquid in the heating cavity 7 and intercommunication cavity 6 freezes and forms a whole, the heat generated by heating structure 8 is conducted to the heating cavity 7 through the pipe wall of pipe body 1, and then the ice is heated and accelerated to melt, thereby solving the problem that the broken ice enters the engine interior.

[0016] Therefore, the heating structure 8 of the application is arranged at the end of the sound absorber 2, i.e. the position after the air has completed sound absorption.

[0017] The muffler 2 is provided with a cover plate 9, which is installed on the heating cavity 7, and a plurality of arranged through holes 10 are provided on the cover plate 9. When the air passes through the muffler 2 at a high speed after the accumulated liquid is melted, a micro-negative pressure state is formed, so that the liquid in the communication cavity 6 is sucked out from the through holes 10 and enters the engine, and the through holes 10 are used to block the ice pieces and only allow the liquid to flow out (or the ice pieces with small volume, which will not affect the engine).

[0018] Since the heating structure 8 is closer to the heating cavity 7, the ice in the heating cavity 7 is relatively quickly melted, so that when the ice in the heating cavity 7 is melted to form ice pieces, the ice in the communication cavity 6 still has an increased volume and cannot be sucked out from the opening of the muffling cavity 5.

[0019] The heating structure 8 includes a mounting seat 11 for being fixed outside the pipe body 1, the heating structure 8 is installed in the mounting seat 11, an electricity connecting part is provided on the heating structure 8, and the mounting seat 11 is provided with a plug-in seat 12 corresponding to the electricity connecting part.

[0020] The mounting seat 11 is sealingly installed with the pipe body 1, after the heating structure 8 is installed in the mounting seat 11, ultrasonic welding or the like can be used to ensure the sealing of the whole heating structure 8 and the pipe body 1, and a quick release connector is installed on the plug-in seat 12, which forms an electrical connection between the electricity connecting part and the power supply after being installed.

[0021] A plurality of reverse threads 13 are provided on the plug-in seat 12, the quick release connector is provided with a clamping groove corresponding to the reverse threads 13, the reverse threads 13 and the clamping groove are fixedly connected, so that the quick release connector is fixed on the plug-in seat 12, and this fixing method improves the convenience of disassembly and assembly.

[0022] The interval between the sealing rings 3 gradually decreases from the inlet to the outlet of the pipe body 1.

Claims

1. An engine silencing air pipe against low temperature icing, comprising a pipe body (1) in which a silencer (2) is installed, characterized in that The muffler (2) is provided with five sealing rings (3) which are sealingly connected with the inner wall of the pipe body (1) to form multiple muffling cavities (5), wherein the outer side of the three sealing rings (3) at the rear end is provided with a notch (4) to make the rear end muffling cavities (5) communicate to form a communicating cavity (6), and the pipe body (1) is provided with a heating cavity (7) which communicates with the communicating cavity (6), and the pipe body (1) is provided with a heating structure (8) on the side close to the heating cavity (7).

2. The low temperature ice formation resistant engine silencing air tube of claim 1, wherein The muffler (2) is provided with a cover plate (9) which is installed on the heating cavity (7).

3. The low temperature ice formation resistant engine silencing air tube of claim 2, wherein The cover plate (9) is provided with a plurality of arranged through holes (10).

4. The low temperature ice formation resistant engine silencing air tube of claim 1, wherein The heating structure (8) comprises a mounting seat (11) for fixing on the outer side of the pipe body (1), the heating structure (8) is installed in the mounting seat (11), the heating structure (8) is provided with an electricity connection part, and the mounting seat (11) is provided with a plug-in seat (12) corresponding to the electricity connection part.

5. The low temperature ice formation resistant engine silencing air tube of claim 1, wherein The interval between the sealing rings (3) gradually decreases from the inlet to the outlet of the pipe body (1).

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