An inlet and exhaust decoupling tee valve with umbrella valve structure

Abstract

The utility model discloses a kind of air inlet and exhaust decoupling tee valves with umbrella valve structure, including the tee valve shell main pipe connected on air compressor;The tee valve shell main pipe upper part is obliquely fixed with the tee valve shell branch pipe of intercommunication;Because umbrella valve structure that tee valve shell main pipe upper end is passed through plug rod, limit block and stopper cap jointly constitutes is shielded to gas, and its material is the rubber that can produce elastic deformation, thus when gas is accumulated to form pressure at umbrella valve, stopper cap will be opened, gas is discharged from outer exhaust hole;And another part of gas leading to tee valve shell branch pipe is shielded under the resistance effect formed by muffler, tee valve shell branch pipe end gas resistance is greater than the stopper cap resistance of tee valve shell main pipe at this time, thus most gas is discharged from stopper cap, thereby the gas back pressure purpose in tee valve shell interior is realized, and the exhaust efficiency of air compressor is improved.

Description

Technical Field

[0001] This utility model belongs to the field of decoupling three-way valve technology, specifically, it relates to an intake and exhaust decoupling three-way valve with an umbrella valve structure. Background Technology

[0002] During operation, air compressors generate strong airflow noise and pulsation during both intake and exhaust processes. Especially when compressed gas is discharged, the high-pressure gas is ejected at high speed from the exhaust valve, producing very loud jet noise and a whistling sound. Silencers are installed on the air compressor's intake and / or exhaust pipes, using various internal structures (such as baffles, expansion chambers, sound-absorbing materials, porous structures, etc.) to attenuate, absorb, or reflect the sound wave energy generated by the airflow, thereby significantly reducing the level of noise propagating outwards.

[0003] Currently, air compressor silencers employ a structure that uses a shared intake and exhaust chamber and port. This design uses a single physical chamber and a single outlet / inlet channel to handle both intake and exhaust functions simultaneously, thereby saving space and cost.

[0004] However, because the airflow direction, speed, and pressure of the intake and exhaust are completely different (one draws in low-pressure gas, and the other discharges high-pressure gas), sharing the same cavity and channel leads to an abnormally complex and turbulent airflow state within the cavity. This high-intensity turbulence constantly rubs and collides with the metal structure, baffle edges, and perforated plates inside the muffler, generating very noticeable high-frequency airflow noise or "whistling." Therefore, although it can reduce some of the original noise, the turbulent noise it introduces significantly increases the overall NVH level, making the air compressor still not quiet enough, or even noisier and more piercing.

[0005] In addition, during the exhaust process, the compressed high-temperature and high-pressure gas should be discharged smoothly into the system or storage tank as soon as possible. However, under the design of the shared structure, the exhaust gas cannot be directly connected to the external pipeline after it is discharged from the air compressor body. Instead, it must pass through the internal structure of the muffler again, which causes additional flow resistance during exhaust. This results in a large back pressure inside the muffler near the exhaust outlet, which hinders the smooth discharge of the gas. Utility Model Content

[0006] One of the objectives of this utility model is to provide an intake and exhaust decoupling three-way valve with an umbrella valve structure, which solves the technical problem that when the airflow is exhausted from the air compressor, it passes through the silencer structure again, resulting in high back pressure, poor gas discharge, and reduced exhaust efficiency.

[0007] The second objective of this utility model is to provide an intake and exhaust decoupling three-way valve with an umbrella valve structure, which solves the technical problem of high NVH (noise, vibration, and harshness) caused by friction between airflow and the internal structure of the muffler.

[0008] The objective of this utility model can be achieved through the following technical solutions: An inlet and outlet decoupling three-way valve with an umbrella valve structure includes a three-way valve housing main pipe connected to an air compressor; a three-way valve housing branch pipe is obliquely fixed to the upper part of the three-way valve housing main pipe, and a silencer is installed at the outer end of the three-way valve housing branch pipe; an integral cover is fixed to the upper end of the three-way valve housing main pipe, and multiple internal exhaust holes are opened around the periphery of the cover; an insertion hole is opened in the center of the cover; an insertion rod is inserted into the insertion hole; and an integrally formed plug is fixed to the upper end of the insertion rod.

[0009] Furthermore, the socket has a circular structure, and the diameter of the socket is the same as the diameter of the plug rod.

[0010] Furthermore, a spherical limiting block is fixedly connected to the lower end of the insertion rod.

[0011] Furthermore, the plug has a dome-shaped structure and covers the inner vent hole.

[0012] Furthermore, the upper end of the main pipe of the three-way valve housing is connected to an end cap via a U-shaped fastener. The end cap has a cylindrical structure with the opening facing downwards, and four external vent holes are provided on the upper surface of the end cap.

[0013] Furthermore, multiple U-shaped fasteners are provided, which are fixed to the lower part of the end cap in a circumferential array.

[0014] Furthermore, the rubber-made insert rod, limiting block, and plug together constitute the umbrella valve structure.

[0015] Furthermore, the umbrella valve structure, consisting of the insert rod, the limiting block, and the plug, blocks the gas. The gas accumulates at the umbrella valve and forms pressure, which pushes open the plug, allowing the gas to escape from the external exhaust port.

[0016] Furthermore, another portion of the gas flowing to the branch pipe of the three-way valve body is blocked by the resistance formed by the silencer, resulting in the gas resistance at the end of the branch pipe of the three-way valve body being greater than the plug resistance of the main pipe of the three-way valve body, which in turn causes most of the gas to be discharged from the plug.

[0017] Furthermore, the lower part of the main pipe of the three-way valve housing is provided with an annular limiting protrusion.

[0018] The beneficial effects of this utility model are: 1. When the air compressor discharges air, the gas inside the air compressor flows to the main pipe and the branch pipe of the three-way valve housing. The upper end of the main pipe of the three-way valve housing is blocked by a parapet valve structure composed of a rod, a limiting block, and a plug. The parapet valve is made of rubber that can undergo elastic deformation. Therefore, when the gas accumulates at the parapet valve and forms pressure, it will push open the plug and the gas will be discharged from the external exhaust port. The gas flowing to the branch pipe of the three-way valve housing is blocked by the resistance formed by the silencer. At this time, the gas resistance at the end of the branch pipe of the three-way valve housing is greater than the resistance of the plug in the main pipe of the three-way valve housing. Therefore, most of the gas is discharged from the plug, thereby reducing the back pressure of the gas inside the three-way valve housing and improving the discharge efficiency of the air compressor.

[0019] 2. In this utility model, a large portion of the gas discharged by the air compressor during exhaust is discharged from the main pipe of the three-way valve housing, and a very small portion is discharged from the silencer of the branch pipe of the three-way valve housing. Even when the gas resistance formed by the plug is much smaller than the gas resistance formed by the silencer, all the gas discharged by the air compressor is discharged from the main pipe of the three-way valve housing. This avoids the airflow from rubbing against the internal structure of the silencer during exhaust, which would generate turbulent noise and result in high NVH. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the exhaust path of this utility model; Figure 6 This is a schematic diagram of the air intake path of this utility model; The attached diagram lists the components represented by each number as follows: 1. Main pipe of three-way valve body; 2. End cap; 3. Branch pipe of three-way valve body; 4. U-shaped fixing buckle; 5. External vent hole; 6. Cover; 7. Insertion hole; 8. Internal vent hole; 9. Insert rod; 10. Limiting block; 11. Plug; 12. Limiting protrusion. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 4 As shown, an intake and exhaust decoupling three-way valve with an umbrella valve structure includes a three-way valve housing main pipe 1 connected to an air compressor; a three-way valve housing branch pipe 3 is obliquely fixed to the upper part of the three-way valve housing main pipe 1, and a silencer is installed at the outer end of the three-way valve housing branch pipe 3; an annular limiting protrusion 12 is provided at the lower part of the three-way valve housing main pipe 1 to help fix the three-way valve housing main pipe 1 to the air compressor.

[0023] The upper end of the main pipe 1 of the three-way valve housing is connected to the end cap 2 via a U-shaped fixing buckle 4. The end cap 2 has a cylindrical structure with the opening facing downward, and multiple U-shaped fixing buckles 4 are provided, which are fixed to the lower part of the end cap 2 in a circumferential array. Four external exhaust holes 5 are opened on the upper surface of the end cap 2. The flow rate of exhaust is controlled by the external exhaust holes 5 opened at the end cap 2 to avoid generating turbulent noise.

[0024] A one-piece cover 6 is fixedly attached to the upper end of the main pipe 1 of the three-way valve housing. Multiple internal vent holes 8 are provided around the periphery of the cover 6. The internal vent holes 8 and the external vent holes 5 work together to exhaust air from the air compressor. A circular insertion hole 7 is provided in the center of the cover 6. Insertion rods 9 of the same diameter are inserted into the insertion hole 7 to prevent gas leakage. A one-piece spherical limiting block 10 is fixedly attached to the lower end of the insertion rod 9 to limit the relative position of the insertion rod 9 inside the insertion hole 7 and prevent the insertion rod 9 from moving axially or falling off. An integrally formed plug 11 is fixedly attached to the upper end of the insertion rod 9. The plug 11 has a dome-shaped structure and covers the internal vent holes 8. The rubber insertion rod 9, the limiting block 10, and the plug 11 together constitute the umbrella valve structure.

[0025] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below: Please refer to it again. Figure 5 and Figure 6As shown, when the air compressor discharges, the gas inside the air compressor flows into the main pipe 1 of the three-way valve housing and the branch pipe 3 of the three-way valve housing respectively. The gas is blocked by the umbrella valve structure formed by the insert rod 9, the limit block 10 and the plug 11 at the upper end of the main pipe 1 of the three-way valve housing. The umbrella valve structure is made of rubber that can produce elastic deformation. Therefore, when the gas accumulates at the umbrella valve and forms pressure, it will push open the plug 11 and the gas will be discharged from the external exhaust port 5. Meanwhile, the gas flowing to the branch pipe 3 of the three-way valve housing is blocked by the resistance formed by the muffler. At this time, the gas resistance at the end of the branch pipe 3 of the three-way valve housing is greater than the resistance of the plug 11 of the main pipe 1 of the three-way valve housing. Therefore, most of the gas is discharged from the plug 11, thereby reducing the gas back pressure inside the three-way valve housing and improving the exhaust efficiency of the air compressor. In addition, since a large part of the gas discharged by the air compressor is discharged from the main pipe 1 of the three-way valve housing and a very small part is discharged from the muffler of the branch pipe 3 of the three-way valve housing, and even when the gas resistance formed by the plug 11 is much smaller than the gas resistance formed by the muffler, all the gas discharged by the air compressor is discharged from the main pipe 1 of the three-way valve housing. This avoids the airflow from rubbing against the internal structure of the muffler during exhaust, generating turbulent noise and resulting in high NVH (turbulent airflow noise).

[0026] It is worth noting that since the plug 11 is located above the internal exhaust port 8, when the airflow flows from top to bottom, the plug 11 will adhere tightly to the upper surface of the cover 6 under the force of the gas, so that the gas cannot flow into the air compressor. Therefore, a one-way gas flow channel is formed. If the air compressor needs to take in air, it can be introduced from the branch pipe 3 of the three-way valve housing.

[0027] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An intake and exhaust decoupling three-way valve with an umbrella valve structure, comprising a three-way valve housing main pipe (1) connected to an air compressor; a three-way valve housing branch pipe (3) obliquely fixed to the upper part of the three-way valve housing main pipe (1); characterized in that: The upper end of the main body (1) of the three-way valve housing is fixedly connected to an integral cover (6), and multiple internal exhaust holes (8) are opened around the periphery of the cover (6); an insertion hole (7) is opened in the center of the cover (6); an insertion rod (9) is inserted inside the insertion hole (7); and an integrally formed plug (11) is fixedly connected to the upper end of the insertion rod (9).

2. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The socket (7) has a circular structure, and the diameter of the socket (7) is the same as the diameter of the plug (9).

3. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The lower end of the insertion rod (9) is fixedly connected to an integral spherical limiting block (10).

4. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The plug (11) has a dome-shaped structure and covers the inner vent (8).

5. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The upper end of the main pipe (1) of the three-way valve housing is connected to an end cap (2) via a U-shaped fixing buckle (4). The end cap (2) is a cylindrical structure with the opening facing downwards. Four external exhaust holes (5) are provided on the upper surface of the end cap (2).

6. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 5, characterized in that: Multiple U-shaped fixing buckles (4) are provided and are fixed to the lower part of the end cap (2) in a circumferential array.

7. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The rubber insert (9), the limiting block (10), and the plug (11) together constitute the umbrella valve structure.

8. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The umbrella valve structure, consisting of the insert rod (9), the limiting block (10), and the plug (11), blocks the gas. The gas accumulates at the umbrella valve and forms pressure, which pushes open the plug (11), allowing the gas to be discharged from the external exhaust port (5).

9. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 8, characterized in that: Another portion of the gas flowing to the three-way valve housing branch pipe (3) is blocked by the resistance formed by the silencer, which causes the gas resistance at the end of the three-way valve housing branch pipe (3) to be greater than the resistance of the plug (11) of the three-way valve housing main pipe (1), thus causing most of the gas to be discharged from the plug (11).

10. The inlet and outlet decoupling three-way valve with an umbrella valve structure according to claim 1, characterized in that: The lower part of the main body (1) of the three-way valve housing is provided with an annular limiting protrusion (12).

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