A double-layer intake pipe for automobile engine

Abstract

The present invention relates to the technical field of automobile parts, and in particular to a double-layer air intake pipe for automobile engines. The double-layer air intake pipe comprises an outer air intake pipe and an inner air intake pipe, wherein one end of the outer air intake pipe is an air inlet, and the inner air intake pipe extends from the other end of the outer air intake pipe, and the extending end is an air outlet. The inner air intake pipe is placed inside the outer air intake pipe and is provided with a conical baffle at one end away from the air outlet. A sieve-like partition is provided between the conical baffle and the inner wall of the outer air intake pipe. A first drain outlet and a second drain outlet are provided at the bottom of the outer air intake pipe, wherein the first drain outlet is provided at one end close to the air inlet, and the second drain outlet is provided at one end close to the air outlet. The present invention can effectively prevent rainwater splashing from the outside from entering the engine cylinder when it rains heavily, thereby preventing the engine cylinder from being damaged, protecting the engine, and extending its service life.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a double-layer air intake pipe of an automobile engine. Background Art

[0002] In order to obtain lower temperature intake air when the car is driving, the air intake is usually installed on the front air intake grille. However, when it rains heavily on rainy days, rainwater and external splashing rainwater will enter the intake pipe and enter the engine cylinder, causing serious damage to the engine.

[0003] In order to prevent rainwater and splashing rainwater from the outside from entering the air intake pipe, some cars currently install the air intake port in other places or open a relatively large drainage port and a simple water retaining structure at the air intake port position, but most cars will still have rainwater enter the engine cylinder when the rain is heavy, causing serious damage to the engine. For example, the patent application with publication number CN207145102U provides a car engine water ingress prevention device, which uses the weight difference between the movable tray and the movable baffle on both sides of the fixed seesaw as a lever. When water is injected into the surface of the movable tray through the air intake pipe, the movable tray drops, and the fixed seesaw rotates due to the large weight of the water. At the same time, the movable baffle rises to close the air intake pipe and draw the water beads into the waterproof cavity. Finally, the drainage outlet is opened to discharge the water, thereby achieving the purpose of waterproofing the air intake pipe. However, the above structure obviously cannot prevent rainwater splashing far from entering the air intake pipe, and the waterproof effect is poor. At the same time, it closes the air intake pipe during waterproofing, which obviously and seriously hinders the air intake of the engine cylinder, and may cause the cylinder air intake to be slow or even stop and cause a malfunction, which has great safety hazards during driving. Summary of the invention

[0004] The invention provides a double-layer air intake pipe for an automobile engine. The invention can effectively prevent rainwater splashing from the outside from entering the engine cylinder when it rains heavily, prevent the engine cylinder from being damaged, protect the engine, and extend the service life.

[0005] The technical solution of the present invention is:

[0006] A double-layer air intake pipe for an automobile engine comprises an outer air intake pipe and an inner air intake pipe, wherein one end of the outer air intake pipe is an air inlet, and the inner air intake pipe extends from the other end of the outer air intake pipe, and the extended end is an air outlet. The inner air intake pipe is placed inside the outer air intake pipe and is provided with a conical baffle at one end away from the air outlet, and a sieve-like partition is provided between the conical baffle and the inner wall of the outer air intake pipe. A first drain outlet and a second drain outlet are provided at the bottom of the outer air intake pipe, wherein the first drain outlet is provided at one end close to the air inlet, and the second drain outlet is provided at one end close to the air outlet.

[0007] A double-layer air intake pipe is arranged, with an inner air intake pipe sleeved inside an outer air intake pipe, and a conical baffle is arranged inside the outer air intake pipe to preliminarily block rainwater entering the inner air intake pipe, and the remaining rainwater is further blocked by a sieve-like partition, and two drain outlets are arranged at the bottom of the outer air intake pipe. The first drain outlet is used to discharge rainwater when it first comes in from the air intake port, and the second drain outlet is used to further discharge a small amount of remaining rainwater that enters after being blocked by the sieve-like partition, thereby effectively preventing rainwater from entering the cylinder of the engine through the air intake pipe.

[0008] Furthermore, a water baffle is provided inside the outer air inlet pipe between the air inlet and the conical baffle plate. The additional water baffle blocks rainwater that has just entered the air inlet, further preventing rainwater from entering the air inlet pipe, and enhancing the effect of blocking rainwater.

[0009] Furthermore, the first drainage port is arranged between the water retaining plate and the air inlet, so as to facilitate the drainage of rainwater that initially enters the air inlet.

[0010] Furthermore, the water baffle is trumpet-shaped, the outer edge of the wide opening of the water baffle is welded to the inner wall of the outer air inlet pipe, the narrow opening of the water baffle faces the air inlet, and the wide opening faces the conical baffle. The trumpet shape improves the water-blocking effect of the water baffle, and the arc surface between the narrow opening and the wide opening can effectively block a large amount of rainwater.

[0011] Furthermore, a reflux baffle is provided on the outer wall of the inner air intake pipe which is placed inside the outer air intake pipe.

[0012] Furthermore, the reflux baffle is annularly sleeved on the outer wall of the inner air intake pipe, and the reflux baffle is welded and fixed on the inner air intake pipe.

[0013] The purpose of setting up the reflux baffle is to prevent a small amount of unblocked rainwater from flowing back into the entrance of the inner air intake pipe after the rainwater is blocked by the sieve baffle. The reflux baffle further enhances the effect of blocking rainwater.

[0014] Furthermore, the sieve-like partition is annular, the outer diameter edge of the sieve-like partition is welded to the inner wall of the outer air intake pipe, and the inner diameter edge of the sieve-like partition is welded to the outer wall of the conical baffle.

[0015] Furthermore, the air inlet is trumpet-shaped, and the wide side is used for air intake.

[0016] Furthermore, the inner air intake pipe is connected by welding from the point where the outer air intake pipe passes through.

[0017] Furthermore, the first drain outlet and the second drain outlet are both funnel-shaped, thereby enhancing drainage efficiency.

[0018] The beneficial effects of the present invention are:

[0019] The present invention designs the air intake pipe to be double-layered and is equipped with a conical baffle and a sieve-like partition at the entrance of the inner air intake pipe. The conical baffle preliminarily blocks the rainwater entering the inner air intake pipe, and the remaining rainwater is further blocked by the sieve-like partition. Two drainage ports are provided at the inner bottom of the outer air intake pipe to drain water. The present invention also adds a trumpet-shaped water baffle to further prevent rainwater from entering the air intake pipe, thereby enhancing the effect of blocking rainwater. At the same time, a reflux partition is provided on the inner air intake pipe to prevent a small amount of rainwater that is not blocked by the sieve-like partition from flowing back when entering the entrance of the inner air intake pipe, thereby further enhancing the effect of blocking rainwater. The double-layer air intake pipe of the present invention can be used in the air intake system of any gasoline or diesel engine, and has a good effect of blocking rainwater, thereby protecting the engine and not affecting the air intake efficiency of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] In the figure: 1-external air inlet pipe, 2-internal air inlet pipe, 3-air inlet, 4-air outlet, 5-conical baffle, 6-sieve partition, 7-first drain outlet, 8-second drain outlet, 9-water baffle, 10-reflux baffle. DETAILED DESCRIPTION

[0022] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0023] Embodiment 1:

[0024] like Figure 1 As shown, a double-layer intake pipe of an automobile engine comprises an outer intake pipe 1 and an inner intake pipe 2. The inner intake pipe 2 is welded from the place where the outer intake pipe 1 passes through. One end of the outer intake pipe 1 is an intake port 3. The intake port 3 is trumpet-shaped. The wide side of the intake port 3 is used for intake. The inner intake pipe 2 extends from the other end of the outer intake pipe 1. The extended end is an outlet port 4. The outlet port 4 is connected to the cylinder of the engine. The inner intake pipe 2 is placed inside the outer intake pipe 1 away from the outlet port 4. A conical baffle 5 is provided at one end, and a sieve-like partition 6 is provided between the conical baffle 5 and the inner wall of the external air intake pipe 1. The sieve-like partition 6 is annular, and the outer diameter edge of the sieve-like partition 6 is welded to the inner wall of the external air intake pipe 1, and the inner diameter edge of the sieve-like partition 6 is welded to the outer wall of the conical baffle 5. A first drain outlet 7 and a second drain outlet 8 are provided at the bottom of the external air intake pipe 1. The first drain outlet 7 is provided at one end close to the air inlet 3, and the second drain outlet 8 is provided at one end close to the air outlet 4.

[0025] A double-layer air intake pipe is arranged, with an inner air intake pipe 2 sheathed in an outer air intake pipe 1, and a conical baffle 5 is arranged inside the outer air intake pipe 1 to preliminarily block rainwater entering the inner air intake pipe 2, and the remaining rainwater is further blocked by a sieve-like partition 6, and two drain outlets are arranged at the bottom of the outer air intake pipe 1, the first drain outlet 7 is used to discharge rainwater when it first comes in from the air intake port 3, and the second drain outlet 8 is used to further discharge a small amount of remaining rainwater that enters after being blocked by the sieve-like partition 6, thereby effectively preventing rainwater from entering the cylinder of the engine through the air intake pipe.

[0026] In this embodiment, a water baffle 9 is provided inside the external air inlet pipe 1 between the air inlet 3 and the conical baffle 5. The added water baffle 9 blocks rainwater that has just entered the air inlet 3, further preventing rainwater from entering the air inlet pipe, thereby enhancing the effect of blocking rainwater.

[0027] In this embodiment, the first drainage port 7 is disposed between the water retaining plate 9 and the air inlet 3 to facilitate drainage of rainwater that initially enters the air inlet 3 .

[0028] In this embodiment, the water baffle 9 is trumpet-shaped, the outer edge of the wide mouth of the water baffle 9 is welded to the inner wall of the outer air inlet pipe 1, the narrow mouth of the water baffle 9 faces the air inlet 3, and the wide mouth faces the conical baffle 5. The trumpet shape improves the water-blocking effect of the water baffle 9, and the arc surface between the narrow mouth and the wide mouth can effectively block a large amount of rainwater.

[0029] In this embodiment, the inner air intake pipe 2 is placed inside the outer air intake pipe 1 and a reflux baffle 10 is provided on the outer wall of the pipe. The reflux baffle 10 is annularly sleeved on the outer wall of the inner air intake pipe 2 and is welded and fixed to the inner air intake pipe 2.

[0030] The purpose of setting the reflux baffle 10 is to prevent a small amount of unblocked rainwater from flowing back into the entrance of the inner air intake pipe 2 after the rainwater is blocked by the sieve baffle 6. The reflux baffle 10 further enhances the effect of blocking rainwater.

[0031] In this embodiment, the first drain port 7 and the second drain port 8 are both funnel-shaped to enhance drainage efficiency.

[0032] In the present invention, the water baffle 9 is the first layer to block rainwater from entering, the conical baffle 5 is the second layer to block rainwater from entering, the sieve-like partition 6 is the third layer to block rainwater from entering, and the backflow baffle 10 added at the entrance of the inner air intake pipe 2 prevents a small amount of unblocked rainwater from entering the entrance of the inner air intake pipe 2 and flowing back, forming a fourth layer to block rainwater from entering. Through the layer-by-layer blocking effect, the rainproof effect of the double-layer air intake pipe of the present invention is greatly improved, and it has a good rainwater blocking effect.

[0033] The present invention designs the air intake pipe to be double-layered and installs a conical baffle 5 and a sieve-like partition 6 at the entrance of the inner air intake pipe 2. The conical baffle 5 preliminarily blocks the rainwater entering the inner air intake pipe 2, and the remaining rainwater is further blocked by the sieve-like partition 6. Two drainage ports are provided at the inner bottom of the outer air intake pipe 1 to drain water. The present invention also adds a trumpet-shaped water baffle 9 to further prevent rainwater from entering the air intake pipe and enhance the effect of blocking rainwater. At the same time, a reflux partition 10 is provided on the inner air intake pipe 2 to prevent a small amount of rainwater that is not blocked by the sieve-like partition 6 from flowing back when entering the entrance of the inner air intake pipe 2, further enhancing the effect of blocking rainwater. The double-layer air intake pipe of the present invention can be used in the air intake system of any gasoline or diesel engine, has a good effect of blocking rainwater, protects the engine, and does not affect the air intake efficiency of the engine.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A double-layer intake pipe for an automobile engine, characterized in that: The invention comprises an outer air inlet pipe and an inner air inlet pipe, wherein one end of the outer air inlet pipe is an air inlet, the inner air inlet pipe extends from the other end of the outer air inlet pipe, and the extending end is an air outlet. The inner air inlet pipe is placed inside the outer air inlet pipe and is provided with a conical baffle at one end away from the air outlet. A sieve-like partition is provided between the conical baffle and the inner wall of the outer air inlet pipe. A first drain outlet and a second drain outlet are provided at the bottom of the outer air inlet pipe, the first drain outlet is provided at one end close to the air inlet, and the second drain outlet is provided at one end close to the air outlet. A water baffle is provided inside the outer air inlet pipe between the air inlet and the conical baffle; The first drain port is arranged between the water baffle and the air inlet; The water baffle is trumpet-shaped, the outer edge of the wide opening of the water baffle is welded to the inner wall of the outer air inlet pipe, the narrow opening of the water baffle faces the air inlet, and the wide opening faces the conical baffle.

2. A double-layer intake pipe for an automobile engine according to claim 1, characterized in that: The inner air inlet pipe is arranged on the outer wall of the pipe inside the outer air inlet pipe and a reflux baffle is arranged on the outer wall of the pipe.

3. A double-layer intake pipe for an automobile engine according to claim 2, characterized in that: The reflux baffle is annularly sleeved on the outer wall of the inner air intake pipe, and the reflux baffle is welded and fixed on the inner air intake pipe.

4. The double-layer intake pipe of an automobile engine according to claim 1, characterized in that: The sieve-like partition is annular, and the outer diameter edge of the sieve-like partition is welded to the inner wall of the outer air intake pipe, and the inner diameter edge of the sieve-like partition is welded to the outer wall of the conical baffle.

5. The double-layer intake pipe of an automobile engine according to claim 1, characterized in that: The air inlet is trumpet-shaped, and the wide side is used for air intake.

6. The double-layer intake pipe of an automobile engine according to claim 1, characterized in that: The inner air intake pipe is welded to the exit of the outer air intake pipe.

7. The double-layer intake pipe of an automobile engine according to claim 1, characterized in that: The first drain port and the second drain port are both funnel-shaped.

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