Tesla-like valve structure and air conditioning air intake system

Abstract

The present invention discloses a novel Tesla-like valve structure, which relates to the technical field of air conditioning air intake system, including: a first guide plate, with a first ventilation hole at the bottom; a second guide plate, with a plurality of second ventilation holes arranged side by side in the middle and upper part, the bottom of the first guide plate is fixed to the second guide plate, and the first guide plate can be deformed to fit with the second guide plate to cover the corresponding second ventilation holes; a diverter block, fixed to the middle of the second guide plate, capable of diverting air into the second ventilation holes on both sides; a third guide plate, located behind the second guide plate, with a third ventilation hole at the bottom, and a limiting portion at the top, capable of limiting the top of the second guide plate; a bottom plate, the bottoms of the second guide plate and the third guide plate are both fixed to the bottom plate. The present invention also discloses an air conditioning air intake system including the above novel Tesla-like valve structure. The present invention can reduce the pressure fluctuation in the compartment, reduce the adverse effects on the human body, and improve the riding comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning air intake systems, and in particular to a Tesla-like valve structure and an air-conditioning air intake system. Background Art

[0002] At present, urban rail vehicles often pass through tunnels during operation. In particular, when the train is running at high speed in the tunnel, the air in front of the vehicle is constantly squeezed by the high-speed vehicle, causing the air between the vehicle and the tunnel to be compressed into multiple high-pressure waves. The generated pressure waves will pass through the air inlet of the train's air-conditioning unit, enter the interior of the air-conditioning unit, and then enter the car along the air duct. The sudden entry of high-pressure air can easily disturb the low air pressure in the car, causing discomfort to the passengers' eardrums.

[0003] The current air conditioning system of rail transit vehicles, for high-speed trains with a speed of 160km / h or above, is equipped with a pressure fluctuation control device or a high-pressure fresh air blower in combination with the high air tightness of the vehicle body. The former is used to actively isolate the external air pressure fluctuation, and the latter is used to passively increase the air pressure inside the vehicle. Both can reduce the impact of external pressure fluctuations on the vehicle and improve the riding comfort of passengers. However, with long-term tunnel travel, the air inside and outside the vehicle is isolated for a long time, the air in the car is not circulated, no fresh air enters, insufficient oxygen content and exhaust gas accumulation can easily cause dizziness in passengers and other problems.

[0004] However, for most existing subway and light rail vehicles, the speed level is 80km / h or 100km / h, and there is no pressure fluctuation control device. Instead, the pressure difference between the inside and outside of the vehicle body is controlled by multiple passive exhaust devices independently installed on the roof of the train.

[0005] At present, in order to meet the travel needs of urban workers, some new rail vehicles are gradually trying to increase their speed to 100km / h or 120km / h. In addition, the air tightness of the subway vehicle body is poor. When the subway vehicle runs at high speed in the tunnel, it is easy to cause drastic fluctuations in the air pressure inside the vehicle, causing discomfort to the passengers' eardrums.

[0006] At present, the fresh air entry path of most rail train air conditioners is: outside the car -> air inlet of the air conditioner (fresh air enters the air conditioner from the outside of the car) -> air inlet duct inside the air conditioner (including air return vent or mixing chamber) -> air conditioner indoor cavity heat exchanger -> air supply vent of the air conditioner (air enters the car from the inside of the air conditioner). Figure 1 shown.

[0007] When pressure fluctuations occur outside the car, they will be transmitted into the car along the fresh air intake path shown in the figure above, causing the air pressure inside the car to suddenly increase, causing the pressure difference between the inside and outside of the passenger's eardrum to exceed the limit, causing eardrum discomfort.

[0008] Reduces riding comfort.

[0009] Therefore, a Tesla-like valve structure and an air-conditioning air intake system are provided to solve the above-mentioned problems existing in the prior art. Summary of the invention

[0010] The purpose of the present invention is to provide a Tesla-like valve structure and an air-conditioning air intake system to solve the problems existing in the above-mentioned prior art. In working conditions where pressure fluctuations are likely to occur, such as in high-speed urban rail vehicles or high-speed trains in tunnels, the pressure fluctuations in the car can be weakened, the adverse effects on the human body can be reduced, and the riding comfort can be improved.

[0011] To achieve the above object, the present invention provides the following solutions:

[0012] The present invention provides a Tesla-like valve structure, comprising:

[0013] A first guide plate, wherein the first guide plate adopts a deformable elastic structure, and a first ventilation hole is provided at a lower portion of the first guide plate;

[0014] A second guide plate, wherein the second guide plate adopts a deformable elastic structure, and a plurality of second ventilation holes are arranged side by side in the middle and upper part of the second guide plate; the bottom of the first guide plate is fixed to the second guide plate, and a plurality of the first guide plates are arranged side by side, and the number of the first guide plates corresponds to the number of the second ventilation holes, the first guide plate can be deformed to fit the second guide plate, and the upper part of the first guide plate can completely cover the corresponding second ventilation holes;

[0015] a flow diverter block, the flow diverter block being fixed to the middle of the second guide plate, and the flow diverter block being capable of diverting air into the second ventilation holes on both sides;

[0016] a third deflector plate, the third deflector plate being located behind the second deflector plate, a third ventilation hole being provided at the lower portion of the third deflector plate, and a limiting portion being provided at the upper portion of the third deflector plate, the limiting portion being capable of limiting the top of the second deflector plate;

[0017] The bottom plate, the second guide plate and the bottom of the third guide plate are all fixed on the bottom plate.

[0018] Preferably, a first limiting rod is further fixed on the bottom plate, and the first limiting rod is located below the second guide plate, and the first limiting rod can limit the deformation of the second guide plate.

[0019] Preferably, a second limit rod is also fixed on the bottom plate, and the second limit rod is located behind the first limit rod. The second limit rod includes two vertical rods, and a cross beam is connected between the tops of the two vertical rods. The second guide plate is located between the two vertical rods, and the cross beam is located above the top of the second guide plate. The second limit rod can maintain the daily position of the second guide plate and can cut the air.

[0020] Preferably, the base plate, the first limiting rod and the second limiting rod are all rigid structural members, and the first limiting rod and the second limiting rod are fixed to the base plate by welding or bonding.

[0021] Preferably, the first guide plate and the second guide plate are both made of elastic sheets, and the elastic coefficient of the first guide plate is lower than the elastic coefficient of the second guide plate; the bottom of the first guide plate is fixed to the second guide plate by welding, bonding, riveting or threaded connection, and the bottom of the second guide plate is fixed to the bottom plate by welding, bonding, riveting or threaded connection.

[0022] Preferably, the first guide plate and the second guide plate are both arc-shaped structures, and the outer angle between the outer arc surface of the first guide plate and the second guide plate is not greater than 90 degrees; the outer angle between the outer arc surface of the second guide plate and the bottom plate is not greater than 90 degrees.

[0023] Preferably, the diverter block is made of a soft deformable material, and the bottom of the diverter block is bonded to the second guide plate.

[0024] Preferably, the third guide plate is a rigid structural member, and the bottom of the third guide plate is fixed to the bottom plate by welding, bonding, riveting or threaded connection;

[0025] The limiting portion on the upper portion of the third guide plate is an arc-shaped limiting portion, and the arc-shaped bottom of the arc-shaped limiting portion can limit the deformation amount of the second guide plate.

[0026] Preferably, a mounting interface is also provided on the base plate.

[0027] The present invention also provides an air-conditioning air intake system, comprising an air-conditioning unit, on which a plurality of the above-mentioned Tesla-like valve structures are installed, and the Tesla-like valve structures are installed in the indoor cavity and / or external channel of the air-conditioning unit.

[0028] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0029] The Tesla-like valve structure of the present invention undergoes structural deformation with the help of air pressure and becomes a structure similar to the Tesla valve unit. By utilizing the unidirectionality of the Tesla valve, the fresh air in a nearly laminar state entering the air-conditioning unit from outside the vehicle compartment is gradually transformed into a turbulent state after being guided by the structure of the Tesla valve unit, thereby weakening the external air pressure fluctuations and further controlling the pressure fluctuations inside the vehicle.

[0030] The present invention can reduce the air pressure fluctuation of the air inlet duct of the air conditioner, improve the riding comfort of passengers, and compared with the air pressure fluctuation control device installed in the high-speed train, it has lower cost and is more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a fresh air path diagram inside the air conditioning unit of the prior art;

[0033] Figure 2 It is a structural schematic diagram of a Tesla-like valve structure of the present invention;

[0034] Figure 3 A schematic diagram of a ventilation hole of a Tesla-like valve structure of the present invention;

[0035] Figure 4 It is a schematic diagram of the state when fresh air passes through the Tesla-like valve structure under normal conditions of the present invention;

[0036] Figure 5 It is a schematic diagram of the state when the medium-fluctuating fresh air passes through the Tesla-like valve structure of the present invention;

[0037] Figure 6 It is a schematic diagram of the state of the violently fluctuating fresh air passing through the Tesla-like valve structure of the present invention;

[0038] Figure 7 A schematic diagram of fresh air flow inside the air intake system of the air conditioner of the present invention;

[0039] Among them, 1 is the indoor cavity, 2 is the outdoor cavity, 3 is the fresh air, 4 is the return air, 5 is the air inlet, 6 is the air supply outlet, 7 is the heat exchanger, 8 is the air inlet, 9 is the return air outlet, 10 is the bottom plate, 11 is the first limiting rod, 12 is the second limiting rod, 13 is the first guide plate, 14 is the second guide plate, 15 is the third guide plate, 16 is the diverter block, 17 is the first ventilation hole, 18 is the second ventilation hole, and 19 is the third ventilation hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The purpose of the present invention is to provide a Tesla-like valve structure and an air-conditioning air intake system to solve the problems existing in the above-mentioned prior art. In working conditions where pressure fluctuations are likely to occur, such as in high-speed urban rail vehicles or high-speed trains in tunnels, the pressure fluctuations in the car can be weakened, the adverse effects on the human body can be reduced, and the riding comfort can be improved.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 2-Figure 7 As shown, this embodiment provides a Tesla-like valve structure, including:

[0044] A first guide plate 13, wherein the first guide plate 13 is a deformable elastic structure, and a first ventilation hole 17 is formed at a lower portion of the first guide plate 13;

[0045] The second guide plate 14 adopts a deformable elastic structure and can be deformed within a certain range. A plurality of second ventilation holes 18 are arranged side by side in the middle and upper part of the second guide plate 14. The bottom of the first guide plate 13 is fixedly attached to the second guide plate 14. A plurality of the first guide plates 13 are arranged side by side. The number of the first guide plates 13 corresponds to the number of the second ventilation holes 18. The first guide plate 13 can be attached to the second guide plate 14 after maximum deformation, and the upper part of the first guide plate 13 can completely cover the corresponding second ventilation holes 18.

[0046] A diverter block 16, wherein the diverter block 16 is fixed to the middle of the second guide plate 14, and the diverter block 16 can divert air to the second ventilation holes 18 on both sides to a certain extent;

[0047] A third deflector plate 15, the third deflector plate 15 is located behind the second deflector plate 14, a third ventilation hole 19 is formed between the lower portion of the third deflector plate 15 and the bottom plate 10, and a limiting portion is provided on the upper portion of the third deflector plate 15, the limiting portion can limit the top of the second deflector plate 14;

[0048] The bottom of the bottom plate 10 , the second guide plate 14 and the third guide plate 15 are all fixed on the bottom plate 10 .

[0049] In this embodiment, a first limiting rod 11 is further fixed on the bottom plate 10 . The first limiting rod 11 is located below the second guide plate 14 . The first limiting rod 11 can limit the deformation of the second guide plate 14 .

[0050] In this embodiment, a second limiting rod 12 is also fixed on the base plate 10, and the second limiting rod 12 is located behind the first limiting rod 11. The second limiting rod 12 includes two vertical rods, and a horizontal beam is connected between the tops of the two vertical rods. The second guide plate 14 is located between the two vertical rods, and the horizontal beam is located above the top of the second guide plate 14. The second limiting rod 12 can maintain the daily position of the second guide plate 14 and can cut the air.

[0051] In this embodiment, the bottom plate 10, the first limiting rod 11 and the second limiting rod 12 are all rigid structural members, and the first limiting rod 11 and the second limiting rod 12 are welded or bonded.

[0052] etc. to be fixed on the base plate 10; Figure 2-Figure 3 As shown, in this embodiment, welding is preferably used.

[0053] Fix it in the form of a

[0054] In this embodiment, the first guide plate 13 and the second guide plate 14 are both made of elastic thin sheets, and the materials or thicknesses of the two are different. The elastic coefficient of the first guide plate 13 is lower than the elastic coefficient of the second guide plate 14, that is, under the impact of the same air pressure fluctuation, the first guide plate 13 deforms before the second guide plate 14; after the first guide plate 13 is deformed to the maximum, that is, after the first guide plate 13 and the second guide plate 14 are attached, the first guide plate 13 can seal the second ventilation hole 18 of the second guide plate 14, and similarly, the second guide plate 14 can seal the first ventilation hole 17 of the first guide plate 13. The bottom of the first guide plate 13 is fixed to the second guide plate 14 by welding, bonding, riveting or threading, and the bottom of the second guide plate 14 is fixed to the bottom plate 10 by welding, bonding, riveting or threading; Figure 2-Figure 3 As shown, in this embodiment, welding is preferably used for fixing.

[0055] In this embodiment, the first guide plate 13 and the second guide plate 14 are both arc-shaped structures, and the outer angle between the outer arc surface of the first guide plate 13 and the second guide plate 14 is not greater than 90 degrees; the outer angle between the outer arc surface of the second guide plate 14 and the bottom plate 10 is not greater than 90 degrees.

[0056] In this embodiment, the diverter block 16 is made of a soft deformable material such as rubber or porous fiber, and can be deformed along with the deformation of the second guide plate 14 . The bottom of the diverter block is bonded to the second guide plate 14 .

[0057] In this embodiment, the third guide plate 15 is a rigid structural member, and the bottom of the third guide plate 15 is fixed to the bottom plate 10 by welding, bonding, riveting or threaded connection. Figure 2-Figure 3 As shown, welding is preferably used in this embodiment;

[0058] The limiting portion on the upper part of the third guide plate 15 is an arc-shaped limiting portion, and the arc bottom of the arc-shaped limiting portion can limit the top of the second guide plate 14. The first limiting rod 11 and the arc bottom of the third guide plate 15 jointly limit the maximum deformation position of the second guide plate 14.

[0059] In this embodiment, a mounting interface is further provided on the base plate 10, so that it can be easily installed in the air-conditioning unit; wherein, the base plate 10 is preferably fixed in the air-conditioning unit by means of threaded connection.

[0060] The Tesla-like valve structure in this embodiment relies on its own structural characteristics and can convert new wind waves passing nearby into turbulent new wind flows when subjected to external air pressure fluctuations.

[0061] like Figure 4 As shown, the Tesla-like valve structure has pores, namely, the first ventilation hole 17, the second ventilation hole 18 and the third ventilation hole 19. When the pressure inside and outside the vehicle is balanced or the air pressure fluctuation is stable, the first guide plate 13, the second guide plate 14 and the third guide plate 15 remain separated, and the wind resistance generated by the Tesla-like valve structure is small, and the fresh air entering the air inlet duct of the air conditioner can pass through the Tesla-like valve structure;

[0062] like Figure 5 As shown, when the Tesla-like valve structure initially encounters a moderate pressure fluctuation, that is, the first guide plate 13 is deformed due to the high wind pressure, and the first guide plate 13 and the second guide plate 14 are fitted together; at this time, when the deformation amount of the second guide plate 14 caused by the wind pressure has not reached its maximum deformable amount, the Tesla-like valve structure still relies on the deformation amount of its own second guide plate 14 to absorb part of the wind pressure;

[0063] like Figure 6As shown, when the Tesla-like valve structure encounters a strong pressure fluctuation, that is, the second guide plate 14 reaches the maximum deformation, its back contacts the first limit rod 11, and its top fits the third guide plate 15. The fresh air will move along the curved surface of the second guide plate 14 and the third guide plate 15 and be forced to change direction. After the fresh air flow falls off the top of the third guide plate 15, it is divided by the crossbeam part of the second limit rod 12. Part of the air volume offsets the subsequent fresh air, and part of the fresh air destroys the laminar state nearby.

[0064] The fresh air after drainage can offset and destroy the laminar fresh air waves passing near the Tesla-like valve structure. After passing through multiple Tesla-like valve structures, it finally becomes a turbulent fresh air flow, no longer has violent pressure fluctuations, and reaches a stable airflow state.

[0065] The present invention also provides an air conditioning air intake system, such as Figure 7 As shown, it includes an air-conditioning unit, on which a plurality of the above-mentioned Tesla-like valve structures are installed. The Tesla-like valve structures can be installed in the indoor cavity or external channel (such as the air duct at the rear end of the air outlet and the vehicle body air duct at the front end of the air inlet) of the air-conditioning unit as needed.

[0066] Compared with the existing air pressure fluctuation control technology, the application of the Tesla-like valve structure in this embodiment can utilize its own structural characteristics to absorb a small part of the air pressure fluctuation when the fresh air enters and convert it into elastic potential energy, and guide a part of it to offset the subsequent fresh air and destroy the nearby laminar fresh air, and finally achieve a non-violent turbulent fresh air, such as Figure 7 As shown ( Figure 7 Small and medium arrows represent fresh air).

[0067] For high-speed subway and light rail trains running at 100km / h or 120km / h, the air conditioning air intake system uses multiple Tesla-like valve structures to effectively weaken the air pressure fluctuations in the tunnel that are transmitted into the train compartment, thereby improving the riding comfort of passengers.

[0068] For high-speed rail trains with a speed of 160 km / h and above, the air-conditioning air intake system can also weaken more severe air pressure fluctuations and continuously deliver fresh air to the carriage after applying multiple Tesla-like valve structures. This embodiment can replace the existing air pressure fluctuation devices (2 units / train) and pressure wave valves (4 units / air-conditioning unit), and is extremely economical.

[0069] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0070] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A Tesla-like valve structure, characterized in that: include: A first guide plate, wherein the first guide plate adopts a deformable elastic structure, and a first ventilation hole is provided at a lower portion of the first guide plate; A second guide plate, wherein the second guide plate adopts a deformable elastic structure, and a plurality of second ventilation holes are arranged side by side in the middle and upper part of the second guide plate; the bottom of the first guide plate is fixed to the second guide plate, and a plurality of the first guide plates are arranged side by side, and the number of the first guide plates corresponds to the number of the second ventilation holes, and the first guide plate can be deformed and fit with the second guide plate, and when the first guide plate fits with the second guide plate, the upper part of the first guide plate can completely cover the corresponding second ventilation holes, and the second guide plate covers the first ventilation holes at the same time; a flow diverter block, the flow diverter block being fixed to the middle of the second guide plate, and the flow diverter block being capable of diverting air into the second ventilation holes on both sides; a third deflector plate, the third deflector plate being located behind the second deflector plate, a third ventilation hole being provided at the lower portion of the third deflector plate, and a limiting portion being provided at the upper portion of the third deflector plate, the limiting portion being capable of limiting the top of the second deflector plate; A bottom plate, the bottoms of the second guide plate and the third guide plate are fixed on the bottom plate; A first limiting rod is also fixed on the bottom plate, the first limiting rod is located below the second guide plate, and the first limiting rod can limit the deformation of the second guide plate; a second limiting rod is also fixed on the bottom plate, the second limiting rod is located behind the first limiting rod, the second limiting rod includes two vertical rods, a crossbeam is connected between the tops of the two vertical rods, the second guide plate is located between the two vertical rods, the crossbeam is located above the top of the second guide plate, the second limiting rod can maintain the daily position of the second guide plate, and can cut the air; The first guide plate and the second guide plate are both made of elastic sheets, the elastic coefficient of the first guide plate is lower than the elastic coefficient of the second guide plate, the first guide plate and the second guide plate are both arc-shaped structures, the limiting portion on the upper part of the third guide plate is an arc-shaped limiting portion, and the arc-shaped bottom of the arc-shaped limiting portion can limit the deformation of the second guide plate.

2. The Tesla-like valve structure according to claim 1, characterized in that: The bottom plate, the first limiting rod and the second limiting rod are all rigid structural parts, and the first limiting rod and the second limiting rod are fixed to the bottom plate by welding or bonding.

3. The Tesla-like valve structure according to claim 1, characterized in that: The bottom of the first guide plate is fixed to the second guide plate by welding, bonding, riveting or threading, and the bottom of the second guide plate is fixed to the bottom plate by welding, bonding, riveting or threading.

4. The Tesla-like valve structure according to claim 1, characterized in that: The external tangent angle between the outer arc surface of the first guide plate and the second guide plate is not greater than 90 degrees; the external tangent angle between the outer arc surface of the second guide plate and the bottom plate is not greater than 90 degrees.

5. The Tesla-like valve structure according to claim 1, characterized in that: The diverter block is made of a soft and deformable material, and the bottom of the diverter block is bonded to the second guide plate.

6. The Tesla-like valve structure according to claim 1, characterized in that: The third guide plate is a rigid structural member, and the bottom of the third guide plate is fixed to the base plate by welding, bonding, riveting or threaded connection.

7. The Tesla-like valve structure according to claim 1, characterized in that: The bottom plate is also provided with a mounting interface.

8. An air-conditioning air intake system, characterized in that: An air-conditioning unit is included, on which a plurality of Tesla-like valve structures as described in any one of claims 1 to 7 are installed, and the Tesla-like valve structures are installed in the indoor cavity and / or external channel of the air-conditioning unit.

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