A one-way valve capable of slowing down pulses

Abstract

The present invention discloses a one-way valve capable of slowing down pulses, which belongs to the technical field of coolers and solves the problem that the one-way valve of an EGR cooler often fails. The one-way valve includes a V-shaped buffer plate and a vent pipe, wherein both ends of the V-shaped buffer plate are connected to the inner wall of the vent pipe, and a first vent is provided between the upper and lower sides of the V-shaped buffer plate and the inner wall of the vent pipe, and the upper and lower sides of the inner wall of the vent pipe are connected to windbreaks, and a second vent is provided between the upper and lower windbreaks. The one-way valve capable of slowing down pulses of the present invention does not require moving parts, and can not only play a role of one-way flow guidance, but also balance pulses, and has the characteristics of wide application range and strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of coolers, and in particular to a one-way valve capable of slowing down pulses. Background Art

[0002] The gas cooled in the EGR cooler is the high-temperature exhaust gas discharged from the engine exhaust pipe. Since the cylinders of the engine are burning in turn, there are pulse waves. The gas outlet of the EGR cooler is connected to the engine intake pipe. Due to the working characteristics of the engine, the pressure difference between the intake pipe and the exhaust pipe fluctuates periodically. In order to prevent the clean air in the intake pipe from entering the EGR cooler and the EGR valve, a one-way guide must be set. In the prior art, a movable valve plate is usually used to play a one-way guide role. Due to the influence of the pulse wave, the pressure changes greatly. When the pressure difference is large, the gas will open the valve plate, and when the pressure difference is small, the valve plate will automatically close. The valve plate is often opened and closed, and is a movable component. It often fails during use, resulting in a high failure rate and increasing the user's maintenance cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a one-way valve that can slow down pulses in view of the above-mentioned deficiencies in the prior art. It does not require any moving parts and can not only play a one-way flow guide role, but also balance the pulses. It has the characteristics of wide application range and strong practicality.

[0004] The technical solution adopted by the present invention is: a one-way valve that can slow down pulses, including a V-shaped buffer plate and a ventilation pipe, wherein both ends of the V-shaped buffer plate are connected to the inner wall of the ventilation pipe, a first air duct is provided between the upper and lower sides of the V-shaped buffer plate and the inner wall of the ventilation pipe, the upper and lower sides of the inner wall of the ventilation pipe are connected to windproof plates, and a second air duct is provided between the upper and lower windproof plates.

[0005] As a further improvement, the turning edge of the V-shaped buffer plate is close to the air inlet of the ventilation pipe, and the turning edge is located on the central plane of the ventilation pipe.

[0006] Furthermore, the V-shaped buffer plate includes a first folding plate and a second folding plate, wherein the highest end of the first folding plate is higher than the lowest end of the upper windproof plate, and the lowest end of the second folding plate is lower than the highest end of the lower windproof plate.

[0007] Furthermore, the first folding plate and the second folding plate are parallel to the upper and lower windproof plates respectively.

[0008] Furthermore, a plurality of V-shaped buffer plates are provided in the ventilation pipe, and each of the V-shaped buffer plates is correspondingly provided with a windproof plate arranged up and down.

[0009] Furthermore, a diverter plate is provided on the V-shaped buffer plate, and the diverter plate is located on the turning edge of the V-shaped buffer plate.

[0010] Furthermore, a connecting pipe is provided on the air outlet of the ventilation pipe, the diameter of the connecting pipe is smaller than the diameter of the ventilation pipe, and the connecting pipe and the ventilation pipe are connected via an inclined structure.

[0011] Beneficial Effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The present invention provides a one-way valve capable of slowing down pulses. When gas flows onto a V-shaped buffer plate, under the action of the V-shaped buffer plate, the gas is divided into an upper and a lower part and flows through a first air passage. Under the action of the upper and lower wind shields, the gas changes its flow direction and flows out from a second air passage. In this process, the gas plays a buffering role. When the gas flows in a forward direction, the flow resistance is small. When the gas flows in a reverse direction, due to the blocking effect of the V-shaped buffer plate and the wind shield, the gas flow resistance is large, and the valve can play a one-way flow guide role. Although the gas will not be completely sealed in the reverse process, it is sufficient to meet the requirements of the EGR cooler. The valve has the characteristics of strong practicality and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of Example 2 of the present invention.

[0016] Among them: 1-ventilation pipe, 2-V-shaped buffer plate, 3-windproof plate, 4-first air duct, 5-second air duct, 6-air inlet, 7-air outlet, 8-diverter plate, 9-connecting pipe, 10-inclined structure, 21-first folding plate, 22-second folding plate. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0018] Example 1

[0019] See also Figure 1As shown, a one-way valve capable of slowing down pulses of the present invention comprises a V-shaped buffer plate 2 and a vent pipe 1, wherein both ends of the V-shaped buffer plate 2 are connected to the inner wall of the vent pipe 1, and a first air passage 4 is arranged between the upper and lower sides of the V-shaped buffer plate 2 and the inner wall of the vent pipe 1, and a wind shield plate 3 is connected to the upper and lower sides of the inner wall of the vent pipe 1, and a second air passage 5 is arranged between the upper and lower wind shield plates 3. When the gas flows onto the V-shaped buffer plate 2, under the action of the V-shaped buffer plate 2, the gas flows from the first air passage 4 in two parts, and under the action of the upper and lower wind shield plates 3, the gas changes its flow direction and flows out from the second air passage 5. In this process, the gas plays a buffering role. When the gas flows in the forward direction, the flow resistance is small. When the gas flows in the reverse direction, due to the blocking effect of the V-shaped buffer plate 2 and the wind shield plate 3, the gas flow resistance is large, and the gas can play a unidirectional flow guiding role. Although it will not be completely sealed in the reverse process, it is sufficient to meet the use requirements of the EGR cooler, and can play a pulse damping role, and at the same time has a unidirectional flow guiding role.

[0020] Specifically, the turning edge of the V-shaped buffer plate 2 is close to the air inlet 6 of the ventilation pipe 1, and the turning edge is located on the central plane of the ventilation pipe 1, so that when the gas flows forward to the V-shaped buffer plate 2, the flow resistance of the gas flow is small. When the gas flows reversely to the V-shaped buffer plate 2, it will be blocked at the opening of the V-shaped buffer plate 2, resulting in a large flow resistance of the gas flow, thereby playing a unidirectional flow guide role.

[0021] Preferably, the V-shaped buffer plate 2 includes a first folding plate 21 and a second folding plate 22, the highest end of the first folding plate 21 is higher than the lowest end of the upper wind shield plate 3, and the lowest end of the second folding plate 22 is lower than the highest end of the lower wind shield plate 3, so that after the gas flows along the first folding plate 21 and the second folding plate 22 to the first air duct 4, under the action of the wind shield plate 3, the gas flows out from the second air duct 5. In this process, the gas plays a buffering role and slows down the pulse.

[0022] Furthermore, the first folding plate 21 and the second folding plate 22 are respectively parallel to the upper and lower wind shielding plates 3, so that when the gas passes through the wind shielding plates 3, it needs to flow in a circuitous way before it can flow out from the second air duct 5, and the mitigation effect is better.

[0023] Furthermore, a plurality of V-shaped buffer plates 2 are provided in the ventilation pipe 1, and each V-shaped buffer plate 2 is provided with a corresponding windproof plate 3 arranged up and down. After multiple buffering, a better buffering effect can be achieved. When the gas flows in the reverse direction, the gas flow resistance is greater, and the one-way flow guide effect is better.

[0024] Example 2

[0025] See also Figure 2, is another specific embodiment of the present invention, which is basically the same as Example 1, except that a diverter plate 8 is provided on the V-shaped buffer plate 2, and the diverter plate 8 is located on the turning edge of the V-shaped buffer plate 2. A connecting pipe 9 is provided on the air outlet 7 of the vent pipe 1, and the diameter of the connecting pipe 9 is smaller than the diameter of the vent pipe 1. The connecting pipe 9 is connected to the vent pipe 1 through an inclined structure 10. Under the action of the diverter plate 8, the gas can flow into two streams of gas at the same time for pulse mixing, and has a two-way pulse mixing function, and also has the functions of pulse damping and unidirectional flow guidance, so that it is more practical in actual applications. When the gas passes through the connecting pipe 9, the flow velocity is accelerated due to the reduction in the pipe diameter, and the effect of unidirectional flow guidance is better.

[0026] When the one-way valve capable of slowing down pulses of the present embodiment is in use, when the gas flows onto the V-shaped buffer plate 2, under the action of the V-shaped buffer plate 2, the gas is divided into two parts, upper and lower, and flows from the first air passage 4. Under the action of the upper and lower wind shields 3, the gas changes its flow direction and flows out from the second air passage 5. In this process, the gas plays a buffering role. When the gas flows in the forward direction, the flow resistance is small. When the gas flows in the reverse direction, due to the blocking effect of the V-shaped buffer plate 2 and the wind shield 3, the gas flow resistance is large, which can play a unidirectional flow guiding role. Although it will not be completely sealed in the reverse process, it is sufficient to meet the requirements of the EGR cooler, and can play a role of pulse damping, and at the same time has a unidirectional flow guiding role. The one-way valve capable of slowing down pulses of the present invention does not require moving parts, can play a unidirectional flow guiding role, and can also balance the pulse, and has the characteristics of wide application range and strong practicality.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A one-way valve that can slow down the pulse, It is characterized in that The invention comprises a V-shaped buffer plate (2) and a vent pipe (1), wherein both ends of the V-shaped buffer plate (2) are connected to the inner wall of the vent pipe (1), a first vent (4) is provided between the upper and lower sides of the V-shaped buffer plate (2) and the inner wall of the vent pipe (1), the upper and lower sides of the inner wall of the vent pipe (1) are connected to windbreak plates (3), a second vent (5) is provided between the upper and lower windbreak plates (3), the turning edge of the V-shaped buffer plate (2) is close to the air inlet (6) of the vent pipe (1), and the turning edge is located on the central plane of the vent pipe (1), the V-shaped buffer plate (2) comprises a first folding plate (21) and a second folding plate (22), the highest end of the first folding plate (21) is higher than the lowest end of the upper windbreak plate (3), and the lowest end of the second folding plate (22) is lower than the highest end of the lower windbreak plate (3).

2. A one-way valve capable of slowing down pulses according to claim 1, It is characterized in that The first folding plate (21) and the second folding plate (22) are respectively parallel to the upper and lower windproof plates (3).

3. A one-way valve capable of slowing down pulses according to claim 1, It is characterized in that A plurality of V-shaped buffer plates (2) are arranged in the ventilation pipe (1), and each of the V-shaped buffer plates (2) is provided with a corresponding windproof plate (3) arranged up and down.

4. A one-way valve capable of slowing down pulses according to claim 1, It is characterized in that The V-shaped buffer plate (2) is provided with a diverter plate (8), and the diverter plate (8) is located on the turning edge of the V-shaped buffer plate (2).

5. A one-way valve capable of slowing down pulses according to claim 4, It is characterized in that A connecting pipe (9) is provided on the air outlet (7) of the ventilation pipe (1); the diameter of the connecting pipe (9) is smaller than the diameter of the ventilation pipe (1); and the connecting pipe (9) and the ventilation pipe (1) are connected via an inclined structure (10).

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