Engine unit with sound insulation and noise reduction mechanism

Abstract

The utility model discloses an engine unit with a sound insulation and noise reduction mechanism, which comprises a sound insulation unit and a cooling unit, the sound insulation unit comprises an engine unit and an exhaust pipe fixedly communicated with one side of the engine unit, one side of the exhaust pipe is fixedly sleeved with a sound insulation cover, and one side of the sound insulation cover is provided with an air outlet hole; the device comprises a breather pipe fixedly communicated with one side of an exhaust pipe, and one end of the breather pipe is fixedly communicated with a main circular box. When the exhaust pipe exhausts waste gas, the ventilation pipe intercepts part of the waste gas to drive the first fan to drive the second fan to rotate, the second fan can suck external air through the air inlet pipe, the air is conveyed into the sound insulation cover through the air conveying pipe, and therefore the sound insulation cover is actively cooled; and therefore, the sound insulation and noise reduction performance cannot be reduced due to high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine group with a sound insulation and noise reduction mechanism. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. The engine is applicable to power generating devices, and can also refer to the entire machine including the power device (such as gasoline engines, aircraft engines). The engine was first born in the UK, so the concept of engine also originated from English. Its original meaning refers to the "mechanical device that generates power."

[0003] During the process of burning gasoline in the inner cavity of the engine unit, the exhaust gas is discharged through the exhaust pipe. When the exhaust gas in the exhaust pipe circulates in the exhaust pipe, the wall of the exhaust pipe vibrates due to the air flow, causing the exhaust pipe to make noise when the engine unit is working. Nowadays, the noise emitted by the exhaust pipe can be reduced by wrapping the exhaust pipe with sound insulation cotton. However, the temperature of the exhaust pipe itself will rise sharply during the exhaust process. The high temperature may cause the volume of the sound insulation cotton to expand or contract, and the sound insulation cotton to lose its original elasticity and softness, thereby affecting its sound insulation and noise reduction performance. Therefore, an engine unit with a sound insulation and noise reduction mechanism is proposed. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above-mentioned problems existing in the existing engine group with a sound insulation and noise reduction mechanism, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide an engine unit with a sound insulation and noise reduction mechanism, which is suitable for solving the problem that the temperature of the exhaust pipe itself will rise sharply during the exhaust process. The high temperature may cause the volume of the sound insulation cotton to expand or contract, and cause the sound insulation cotton to lose its original elasticity and softness, thereby affecting its sound insulation and noise reduction.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an engine block with a sound insulation and noise reduction mechanism, comprising:

[0008] A sound insulation unit, comprising an engine block and an exhaust pipe fixedly connected to one side of the engine block, a sound insulation cover fixedly sleeved on one side of the exhaust pipe, and an air outlet opening formed on one side of the sound insulation cover;

[0009] A cooling unit includes a ventilation pipe fixedly connected to one side of the exhaust pipe, one end of the ventilation pipe is fixedly connected to a main circular box, a return pipe is fixedly connected between the main circular box and the exhaust pipe, and the return pipe is located at one end of the inner cavity of the exhaust pipe and is provided with a circular hole away from the engine group. The inner wall of the main circular box is rotatably connected to the first fan, one side of the sound insulation cover is fixedly connected to the air supply pipe, the end of the air supply pipe is fixedly connected to the secondary circular box, and the opposite surfaces of the main circular box and the secondary circular box are commonly penetrated by a fixing rod, one end of the fixing rod is fixedly connected to the first fan, and the other end of the fixing rod is fixedly connected to the second fan, and one side of the secondary circular box is fixedly connected to the air inlet pipe.

[0010] As a preferred solution of the engine group with a sound insulation and noise reduction mechanism described in the utility model, wherein: a hollow cylinder is fixedly sleeved on the upper part of the exhaust pipe, the hollow cylinder is located in the exhaust pipe, the end of the hollow cylinder is fixedly connected to a delivery pipe, the bottom end of the delivery pipe passes through the sound insulation cover, and a sealing cover is provided at the top end of the delivery pipe.

[0011] As a preferred solution of the engine unit with a sound insulation and noise reduction mechanism described in the utility model, a spiral piece is fixedly sleeved on the hollow cylinder, and the spiral piece is in contact with the inner wall of the sound insulation cover.

[0012] As a preferred solution of the engine unit with a sound insulation and noise reduction mechanism described in the utility model, wherein: the inner wall of the air inlet pipe is threadedly connected to a filter plate, and one side of the filter plate is fixedly connected to the handle.

[0013] As a preferred solution of the engine group with a sound insulation and noise reduction mechanism described in the utility model, a circular ring is rotatably provided on the sound insulation cover, a curved sound insulation board is fixedly connected to one side of the circular ring, and a curved opening that fits the curved sound insulation board is opened on one side of the sound insulation cover.

[0014] As a preferred solution of the engine group with a sound insulation and noise reduction mechanism described in the utility model, one side of the arc-shaped sound insulation board is threadedly connected with a threaded rod, one side of the sound insulation cover is provided with a circular groove that fits the threaded rod, and the end of the threaded rod is located in the circular groove.

[0015] The beneficial effects of the present invention are as follows: when the exhaust pipe discharges exhaust gas, the ventilation pipe intercepts part of the exhaust gas to drive the first fan to rotate, and the first fan drives the second fan to rotate through the fixed rod. The second fan can absorb external air through the air inlet pipe and transport the air to the sound insulation cover through the air supply pipe, thereby actively cooling the sound insulation cover to ensure that the temperature of the sound insulation cover body will not be too high, and the sound insulation and noise reduction performance will not be reduced by the influence of high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the engine group with a sound insulation and noise reduction mechanism proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the cooling unit structure proposed by the present utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the spiral sheet and the hollow cylinder proposed in the utility model;

[0020] Figure 4 This is a half-section schematic diagram of the internal structure of the main circular box and the auxiliary circular box proposed in the present invention.

[0021] Description of the drawings: 100, sound insulation unit; 101, engine group; 102, exhaust pipe; 103, sound insulation cover; 200, cooling unit; 201, ventilation pipe; 202, main circular box; 203, return pipe; 204, first fan; 205, air supply pipe; 206, secondary circular box; 207, fixing rod; 208, second fan; 209, air inlet pipe; 210, hollow cylinder; 211, delivery pipe; 212, spiral sheet; 213, filter plate; 214, circular ring; 215, arc-shaped sound insulation board; 216, threaded rod. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0026] Example

[0027] Reference Figures 1-4 , which is an embodiment of the present utility model, provides an engine block with a sound insulation and noise reduction mechanism, comprising: a sound insulation unit 100 and a cooling unit 200;

[0028] The sound insulation unit 100 includes an engine block 101 and an exhaust pipe 102 fixedly connected to one side of the engine block 101. A sound insulation cover 103 is fixedly sleeved on one side of the exhaust pipe 102, and an air outlet is opened on one side of the sound insulation cover 103.

[0029] The cooling unit 200 includes a ventilation pipe 201 fixedly connected to one side of the exhaust pipe 102. One end of the ventilation pipe 201 is fixedly connected to the main circular box 202. A return pipe 203 is fixedly connected between the main circular box 202 and the exhaust pipe 102. The return pipe 203 is located at one end of the inner cavity of the exhaust pipe 102 and has a circular hole away from the engine group 101. The inner wall of the main circular box 202 is rotatably connected to the first fan 204. One side of the soundproof cover 103 is fixedly connected to the air supply pipe 205. The end of the air supply pipe 205 is fixedly connected to a secondary circular box 206, and a fixing rod 207 is provided through the opposite surfaces of the main circular box 202 and the secondary circular box 206. One end of the fixing rod 207 is fixedly connected to the first fan 204, and the other end of the fixing rod 207 is fixedly connected to the second fan 208. One side of the secondary circular box 206 is fixedly connected to the air inlet pipe 209, and the inner wall of the air inlet pipe 209 is threadedly connected to the filter plate 213, and one side of the filter plate 213 is fixedly connected to the handle.

[0030] The exhaust gas generated by the operation of the engine group 101 is discharged through the exhaust pipe 102. The outer shell of the sound insulation cover 103 is made of hard material, and the inner wall of the sound insulation cover 103 is covered with sound insulation cotton to achieve the effect of sound insulation and noise reduction for the exhaust pipe 102. When the exhaust pipe 102 discharges the exhaust gas, part of the exhaust gas will be intercepted by the ventilation pipe 201, so that part of the exhaust gas flows into the main circular box 202 and blows the first fan 204 to rotate. The exhaust gas in the main circular box 202 is circulated into the exhaust pipe 102 again through the return pipe 203. One end of the return pipe 203 located in the inner cavity of the exhaust pipe 102 is closed, so that the exhaust gas in the exhaust pipe 102 will not enter the return pipe 203, and the closed end is opened with a circular hole away from the engine group 101. The exhaust gas in the return pipe 203 is discharged through the circular hole, so that the gas in the return pipe 203 can be discharged in the same direction as the exhaust gas from the exhaust pipe 102.

[0031] The first fan 204 can drive the second fan 208 to rotate synchronously through the fixing rod 207. The second fan 208 is located in the inner cavity of the auxiliary circular box 206 and faces the end of the air inlet pipe 209. When the second fan 208 rotates, the second fan 208 absorbs external air through the air inlet pipe 209, so that the air enters the auxiliary circular box 206. The end of the air inlet pipe 209 is trumpet-shaped to increase the air intake of the air inlet pipe 209. The air can be filtered through the filter plate 213 to ensure that the air in the air inlet pipe 209 is not mixed with a large amount of dust and impurities. The handle is turned for easy use. The user rotates the filter plate 213. The filter plate 213 is taken out from the air inlet pipe 209, and is cleaned and replaced. The air in the sub-circular box 206 is transported to the sound insulation cover 103 through the air supply pipe 205 to cool the inner cavity of the sound insulation cover 103, and the hot air in the sound insulation cover 103 is discharged through the air outlet. Therefore, when the engine group 101 is working, the sound insulation cover 103 can be actively cooled, so that the air inside the sound insulation cover 103 can continue to flow, to ensure that the temperature of the sound insulation cover 103 body is not too high, and the sound insulation and noise reduction performance of the sound insulation cover 103 will not be reduced by the influence of high temperature.

[0032] In addition, a hollow cylinder 210 is fixedly sleeved on the upper part of the exhaust pipe 102, and the hollow cylinder 210 is located inside the exhaust pipe 102. The end of the hollow cylinder 210 is fixedly connected to a delivery pipe 211. The bottom end of the delivery pipe 211 passes through the sound insulation cover 103, and a sealing cover is provided at the top end of the delivery pipe 211. A spiral piece 212 is fixedly sleeved on the hollow cylinder 210, and the spiral piece 212 fits against the inner wall of the sound insulation cover 103.

[0033] The sealing cover on the top of the delivery pipe 211 can be removed, and the coolant can be delivered to the hollow cylinder 210 through the delivery pipe 211, so that when the exhaust pipe 102 discharges high-temperature exhaust gas, the heat diffusion on the surface of the exhaust pipe 102 is reduced through the hollow cylinder 210 and the coolant, and the heat transferred to the sound insulation cover 103 is reduced, and the sound propagation efficiency in the liquid is reduced. The coolant in the inner cavity of the hollow cylinder 210 can absorb part of the noise to achieve the efficiency of sound insulation and noise reduction. When air flows into the sound insulation cover 103 through the air delivery pipe 205, the air will flow in a spiral shape along the spiral blades 212, thereby enabling the air to circulate evenly in the sound insulation cover 103 through the spiral blades 212, and fully contact the inner cavity of the sound insulation cover 103 and the outer surface of the hollow cylinder 210, thereby achieving dual heat dissipation of the sound insulation cover 103 and the hollow cylinder 210, so as to fully ensure that the sound insulation cover 103 can soundproof and reduce the noise of the engine group 101 in a good state.

[0034] Furthermore, a circular ring 214 is rotatably sleeved on the sound insulation cover 103, and a curved sound insulation board 215 is fixedly connected to one side of the circular ring 214. An arc-shaped opening that fits the curved sound insulation board 215 is opened on one side of the sound insulation cover 103, and a threaded rod 216 is threadedly connected to one side of the curved sound insulation board 215. A circular groove that fits the threaded rod 216 is opened on one side of the sound insulation cover 103, and the end of the threaded rod 216 is located in the circular groove.

[0035] The first fan 204 and the second fan 208 can actively cool the sound insulation cover 103 when the engine group 101 is working. When the engine group 101 is no longer working, the exhaust pipe 102 still retains residual heat. At this time, the threaded rod 216 is rotated so that it is no longer inserted into the circular groove of the sound insulation cover 103. Then, the circular ring 214 is rotated so that the arc-shaped sound insulation plate 215 does not cover the arc-shaped opening of the sound insulation cover 103. In this way, outside air can flow into the sound insulation cover 103 through the arc-shaped opening, and the heat in the sound insulation cover 103 can also be discharged through the arc-shaped opening, so that the sound insulation cover 103 can perform passive heat dissipation and ensure that the sound insulation cover 103 is not heated by the residual heat. When the heat dissipation is completed, the circular ring 214 is rotated so that the arc-shaped sound insulation plate 215 covers the arc-shaped slide groove of the sound insulation cover 103. Then, the threaded rod 216 is rotated so that it is inserted into the circular groove of the sound insulation cover 103 to fix the position of the arc-shaped sound insulation plate 215.

[0036] During use, when the exhaust pipe 102 discharges exhaust gas, part of the exhaust gas will be intercepted by the ventilation pipe 201, so that part of the exhaust gas flows into the main circular box 202 and blows the first fan 204 to rotate. The exhaust gas in the main circular box 202 flows back into the exhaust pipe 102 through the return pipe 203. The first fan 204 can drive the second fan 208 to rotate synchronously through the fixing rod 207. The second fan 208 draws external air through the air inlet pipe 209 and makes the air enter the auxiliary circular box 206. The air in the auxiliary circular box 206 is transported to the sound insulation cover 103 through the air supply pipe 205.

[0037] The air is evenly circulated in the soundproof cover 103 through the spiral blades 212, and the soundproof cover 103 and the hollow cylinder 210 are doubly cooled. The noise generated by the operation of the engine group 101 is soundproofed and reduced by the soundproof cover 103 and the hollow cylinder 210, and the hot air in the soundproof cover 103 is discharged through the air outlet. Therefore, when the engine group 101 is working, the soundproof cover 103 can be actively cooled, and the air inside the soundproof cover 103 can continue to flow to ensure that the temperature of the soundproof cover 103 body is not too high, and the sound insulation and noise reduction performance of the soundproof cover 103 will not be reduced by the high temperature. When the engine group 101 is no longer working, the residual heat in the soundproof cover 103 is dissipated through the curved sound insulation board 215.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An engine unit with a sound insulation and noise reduction mechanism, characterized in that: include: A sound insulation unit (100) comprises an engine block (101) and an exhaust pipe (102) fixedly connected to one side of the engine block (101); a sound insulation cover (103) is fixedly sleeved on one side of the exhaust pipe (102); and an air outlet is provided on one side of the sound insulation cover (103); A cooling unit (200) comprises a ventilation pipe (201) fixedly connected to one side of an exhaust pipe (102); one end of the ventilation pipe (201) is fixedly connected to a main circular box (202); a return pipe (203) is fixedly connected between the main circular box (202) and the exhaust pipe (102); one end of the return pipe (203) located in the inner cavity of the exhaust pipe (102) is provided with a circular hole in a direction away from the engine block (101); the inner wall of the main circular box (202) is rotatably connected to a first fan (204); One side of the soundproof cover (103) is fixedly connected to an air supply pipe (205), an end of the air supply pipe (205) is fixedly connected to a secondary circular box (206), a fixing rod (207) is provided through the opposite surfaces of the main circular box (202) and the secondary circular box (206), one end of the fixing rod (207) is fixedly connected to the first fan (204), and the other end of the fixing rod (207) is fixedly connected to the second fan (208), and one side of the secondary circular box (206) is fixedly connected to an air inlet pipe (209).

2. The engine block with a sound insulation and noise reduction mechanism according to claim 1, characterized in that: A hollow cylinder (210) is fixedly sleeved on the upper portion of the exhaust pipe (102), the hollow cylinder (210) is located inside the exhaust pipe (102), the end portion of the hollow cylinder (210) is fixedly connected to a delivery pipe (211), the bottom end of the delivery pipe (211) passes through the soundproof cover (103), and a sealing cover is provided at the top end of the delivery pipe (211).

3. The engine block with a sound insulation and noise reduction mechanism according to claim 2, characterized in that: A spiral piece (212) is fixedly sleeved on the hollow cylinder (210), and the spiral piece (212) is in contact with the inner wall of the soundproof cover (103).

4. The engine block with a sound insulation and noise reduction mechanism according to claim 1, characterized in that: The inner wall of the air inlet pipe (209) is threadedly connected to a filter plate (213), and one side of the filter plate (213) is fixedly connected to the handle.

5. The engine block with a sound insulation and noise reduction mechanism according to claim 1, characterized in that: A circular ring (214) is rotatably sleeved on the soundproof cover (103), a curved soundproof plate (215) is fixedly connected to one side of the circular ring (214), and a curved opening that fits the curved soundproof plate (215) is opened on one side of the soundproof cover (103).

6. The engine block with a sound insulation and noise reduction mechanism according to claim 5, characterized in that: A threaded rod (216) is threadedly connected to one side of the arc-shaped sound insulation board (215), and a circular groove that fits the threaded rod (216) is opened on one side of the sound insulation cover (103), and the end of the threaded rod (216) is located in the circular groove.

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