One-way valve and air conditioning equipment

Abstract

The utility model provides a one-way valve and air conditioning equipment. The one-way valve comprises a valve seat and two valve plates rotationally arranged on the valve seat. Wherein each valve plate comprises a rotating shaft part, a first tail end and a second tail end, and each valve plate further comprises a downstream impact surface extending from the second tail end to the first tail end and a countercurrent impact surface located on the back side of the downstream impact surface. When the one-way valve is in an open state, the reverse flow impact faces of the two valve plates are oppositely arranged, and the distance between the reverse flow impact faces of the two valve plates is gradually increased from the second tail ends of the two valve plates to the first tail ends of the two valve plates in the axis direction of the valve seat. By means of the arrangement, the dead weight needed by closing the valve plate by means of gravity can be effectively reduced, and then pressure drop generated when media impact the valve plate in the downstream process is reduced. And when the valve plate is impacted by medium countercurrent, the valve plate can bear the impact of more countercurrent media, so that the valve plate can be quickly and stably closed, and the influence caused by the countercurrent media is reduced.

Description

Technical Field

[0001] This application relates to the field of valve components, and particularly to a check valve and an air conditioning device. Background Art

[0002] With the rapid development of industrial technology, there are more and more types of air conditioning devices, and their functions are becoming increasingly rich. They are widely used in environments such as personal homes, commercial entities, and factories. As one of the important components of an air conditioning device, a compressor plays a role in compressing and driving the refrigerant in the refrigerant circuit of the air conditioner. To ensure the normal operation of the compressor, a check valve component is usually provided at the outlet end of the compressor to prevent the refrigerant from flowing back.

[0003] In the related art, the valve disc of the check valve component usually closes by gravity, and the valve disc itself is often relatively thick and heavy. This makes it that when the check valve component is opened, the valve disc still has a tendency to close, and the opening resistance generated by the valve disc is relatively large, which in turn causes a certain pressure drop to the refrigerant, resulting in a series of problems such as a decline in equipment performance, an increase in noise, and unstable working pressure.

[0004] Therefore, it is necessary to provide an improved check valve to solve some or all of the above problems. Summary of the Utility Model

[0005] This application provides a check valve and an air conditioning device with little influence on the pressure drop.

[0006] This application provides a check valve, including a valve seat and two valve discs rotatably arranged on the valve seat; wherein, each valve disc includes a rotating shaft portion, a first end, and a second end, and each valve disc further includes a downstream impact surface extending from the second end towards the first end and a reverse flow impact surface located on the back side of the downstream impact surface; when the check valve is in the open state, the reverse flow impact surfaces of the two valve discs are arranged oppositely, and along the axis direction of the valve seat, the distance between the reverse flow impact surfaces of the two valve discs gradually increases from the second ends of the two valve discs to the first ends of the two valve discs.

[0007] Further, for each valve disc, the downstream impact surface is arranged as a flat surface; the reverse flow impact surface is biased towards the downstream impact surface from the rotating shaft portion, and the included angle A between the reverse flow impact surface and the downstream impact surface is greater than 0 degrees and not greater than 15 degrees.

[0008] Furthermore, each valve plate also includes a countercurrent diffusion surface; one side of the countercurrent diffusion surface is connected to the rotating shaft portion, and is arranged from the rotating shaft portion toward the downstream impact surface; the countercurrent diffusion surface is arranged away from the countercurrent impact surface; when the one-way valve is in an open state, the countercurrent diffusion surfaces of the two valve plates are arranged opposite to each other, and along the axial direction of the valve seat, the distance between the two countercurrent diffusion surfaces increases from the valve seat to the second end of the valve plate.

[0009] Furthermore, the valve seat comprises a rotational connection portion and a rotation hole which is concavely arranged inwardly from the rotational connection portion in a direction perpendicular to the axis of the valve seat, and the rotation shaft portion is rotatably arranged in the rotation hole.

[0010] Furthermore, the rotating hole is arranged in a waist-shaped hole, and the rotating hole is provided with an upper rotating part and a lower rotating part; when the one-way valve is in an open state, the rotating shaft part is located at the upper rotating part; when the one-way valve is in a closed state, the rotating shaft part is located at the lower rotating part.

[0011] Furthermore, the rotary holes are symmetrically arranged on the rotary connection portion; an angle B between a line connecting two centers of the rotary holes and a straight line parallel to the valve seat axis and passing through any center of the rotary holes is greater than or equal to 0 degrees and not greater than 45 degrees.

[0012] Furthermore, the valve seat includes an opening limit portion; the opening limit portion protrudes from the adapter portion, and the protruding direction of the opening limit portion is opposite to the recessed direction of the rotating hole; at least part of the opening limit portion is located above the rotating hole, and when the one-way valve is in an open state, the two valve plates contact the opening limit portion.

[0013] Furthermore, the valve seat also includes a closing limit portion protruding from the inner wall of the valve seat toward the axis of the valve seat; the closing limit portion is located below the rotating hole, and when the one-way valve is in a closed state, the two valve plates contact the closing limit portion.

[0014] Furthermore, the valve seat is provided with a mounting portion; the mounting portion is used to mount the one-way valve; the valve seat comprises a first valve seat and a second valve seat which are detachably arranged; and the valve sheet is engaged between the first valve seat and the second valve seat.

[0015] The present application also provides an air conditioning device, comprising a compressor and the one-way valve as described above, wherein the one-way valve is arranged on the compressor.

[0016] The check valve of the present application has two valve plates provided on the valve seat, which can effectively reduce the self-weight required for the valve plate to close by relying on gravity, and further reduce the pressure drop generated when the medium flows downstream and impacts the valve plate. Moreover, when the check valve is in the open state, the distance between the reverse-flow impact surfaces of the two valve plates increases. When the valve plate is impacted by the reverse-flow medium, the valve plate can withstand more impacts from the reverse-flow medium, increasing the thrust of the reverse-flow medium, so that the valve plate closes quickly and stably, reducing the influence generated by the reverse-flow medium.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0019] Figure 1 is a perspective view of the check valve of the present application in the open state.

[0020] Figure 2 is Figure 1 a side view of the check valve in

[0021] Figure 3 is Figure 2 a cross-sectional view of the check valve in

[0022] Figure 4 is a perspective view of the check valve of the present application in the closed state.

[0023] Figure 5 is Figure 4 a side view of the check valve in

[0024] Figure 6 is Figure 5 a cross-sectional view of the check valve in

[0025] Figure 7 is Figure 4 a perspective view of the valve seat in

[0026] Figure 8 is Figure 7 a cross-sectional view of the valve seat in

[0027] Figure 9 is Figure 8 a partial enlarged view of F in

[0028] Figure 10 is Figure 4 a perspective view of the valve plate in

[0029] Figure 11 is Figure 4Stereogram of the middle valve plate from another perspective.

[0030] Figure 12 is Figure 10 Side view of the middle valve plate.

[0031] Explanation of the reference numerals in the drawings: 1-valve seat; 10-valve seat body; 11-rotary connection part; 111-assembly surface; 112-first rotary connection part; 113-second rotary connection part; 12-rotating hole; 121-upper rotating part; 122-lower rotating part; 13-opening limit part; 14-closing limit part; 15-mounting part; 16-first valve seat; 17-second valve seat; 2-valve plate; 20-valve plate body; 21-rotating shaft part; 22-downstream impact surface; 23-upstream impact surface; 24-first end of the valve plate; 25-upstream diffusion surface; 26-second end of the valve plate; 27-downstream guiding surface. Detailed implementation mode

[0032] Here, the technical solutions in the embodiments (or "implementation modes") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), then such terms are only used to explain the relative positional relationships and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0034] As Figures 1 to 7 shown, the check valve of the present application includes a valve seat 1 and a valve plate 2. The valve plate 2 is rotatably arranged on the valve seat 1 to open or close the valve seat 1. There are two valve plates 2, and they are symmetrically arranged on the valve seat 1. When the medium flows downstream, it impacts the valve plate 2, making the check valve in the open state. When the medium flows upstream, it also impacts the valve plate 2, making the check valve in the closed state.

[0035] In one embodiment, the valve seat 1 includes a valve seat body 10, a rotary connection part 11, a rotating hole 12, an opening limit part 13, a closing limit part 14, and a mounting part 15. The valve seat body 10 has an annular structure, and the rotary connection part 11 protrudes from the inner wall of the valve seat body 10 towards the axis of the valve seat body 10. There are two rotary connection parts 11, and they are symmetrically arranged on the inner wall of the valve seat body 10. Each valve plate 2 is arranged between the two rotary connection parts 11.

[0036] The screwing joint portion 11 includes an assembly surface 111. The assembly surface 111 is arranged as a flat straight surface and is connected to the inner wall of the valve seat body 10. The assembly surfaces 111 of the two screwing joint portions 11 are symmetrically arranged, and part of the valve plate 2 passes through the screwing joint portion 11 from the assembly surface 111. With such an arrangement, it is convenient for the valve plate 2 to be rotatably connected to the valve seat 1, and when the check valve is in the closed state, the valve plate 2 seals the valve seat 1 more tightly.

[0037] In one embodiment, the rotating hole 12 is recessed from the screwing joint portion 11 in a direction perpendicular to the axis of the valve seat 1. Specifically, the rotating hole 12 is recessed from the assembly surface 111, and part of the valve plate 2 is rotatably arranged in the rotating hole 12. The rotating hole 12 is arranged as an oval hole. On each screwing joint portion 11, there are two rotating holes 12, and the two rotating holes 12 are symmetrically arranged on the screwing joint portion 11.

[0038] Further in combination with Figure 8 and Figure 9 As shown, the included angle B between the line connecting the centers of the two rotating holes 12 and the line parallel to the axis of the valve seat 1 and passing through any center of the rotating hole 12 is greater than or equal to 0 degrees and not greater than 45 degrees. With such an arrangement, if the medium flows reversely, a relatively large area can impact the valve plate 2 so that the valve plate 2 can quickly and stably close. At the same time, the included angle B is not greater than 45 degrees to prevent the valve plate 2 from blocking the flowing medium and affecting the pressure drop of the medium.

[0039] The rotating hole 12 is provided with an upper rotating portion 121 and a lower rotating portion 122. When the check valve is in the open state, the rotating shaft portion 21 is located at the upper rotating portion 121, making it easier for the valve plate 2 to contact the opening limiting portion 13. When the check valve is in the closed state, the rotating shaft portion 21 is located at the lower rotating portion 122, making it easier for the valve plate 2 to contact the closing limiting portion 14. At the same time, it also makes the two valve plates 2 contact each other to block the reverse-flow medium.

[0040] Specifically, when the medium flows forward, under the action of the medium thrust, the valve plate 2 rotates and moves so that the valve plate 2 moves to the upper rotating portion 121, and at the same time the valve plate 2 rotates to the open state. When the medium flows reversely, under the action of the medium thrust, the valve plate 2 rotates and moves so that the valve plate 2 moves to the lower rotating portion 122, and at the same time the valve plate 2 rotates to the closed state.

[0041] The screwing joint portion 11 includes a first screwing joint portion 112 and a second screwing joint portion 113 which are symmetrically arranged. In the direction from the first screwing joint portion 112 to the second screwing joint portion 113, the two rotating holes 12 are symmetrically arranged with respect to the axis of the valve seat 1, and the included angle between the line connecting the centers of the rotating holes 12 and the axis of the valve seat 1 is greater than or equal to 0 degrees and not greater than 45 degrees. At the same time, the distance between the two upper rotating portions 121 on any screwing joint portion 11 is greater than the distance between the two lower rotating portions 122.

[0042] The through hole 12 is in the shape of an oval hole, and the valve plate 2 can rotate and move within the through hole 12, enabling the valve plate 2 to be easily opened and closed within the limited space of the valve seat 1, and preventing interference between the two valve plates 2.

[0043] In another embodiment, the through hole 12 is in the shape of a circular hole, and the valve plate 2 can only rotate within the through hole 12. This setting reduces the manufacturing difficulty of the valve seat 1, thereby reducing the manufacturing cost.

[0044] In one embodiment, the opening limiting portion 13 is in the shape of a convex block, and the self-rotating connecting portion 11 protrudes. The protruding direction of the opening limiting portion 13 is opposite to the concave direction of the through hole 12. When the one-way valve is in the open state, the two valve plates 2 contact the opening limiting portion 13. At least part of the opening limiting portion 13 is located above the through hole 12. With this setting, when the one-way valve is in the open state, the opening limiting portion 13 can better limit the valve plate 2 and prevent the valve plate 2 from losing its limiting effect. Preferably, to improve the limiting effect of the opening limiting portion 13, two opening limiting portions 13 are provided and are arranged in one-to-one correspondence with the rotating connecting portion 11.

[0045] The closing limiting portion 14 protrudes from the inner wall of the valve seat 1 towards the axis of the valve seat 1. Specifically, the closing limiting portion 14 surrounds the inner wall of the valve seat body 10 and the assembly surface 111 of the rotating connecting portion 11. The closing limiting portion 14 is located below the through hole 12, and when the one-way valve is in the closed state, the two valve plates 2 contact the closing limiting portion 14.

[0046] The mounting portion 15 is a mounting hole and is provided on the valve seat body 10 and / or the rotating connecting portion 11. The mounting portion 15 is used to mount the one-way valve of the present application to the device. It should be noted that the mounting portion 15 can also be structures such as a hook or a thread provided on the outer wall of the valve seat body 10.

[0047] In one embodiment, the valve seat 1 includes a first valve seat 16 and a second valve seat 17. The first valve seat 16 and the second valve seat 17 are detachably arranged, and the valve plate 2 is clamped between the first valve seat 16 and the second valve seat 17. With this setting, it is convenient to install the valve plate 2 onto the valve seat 1, thereby improving the installation convenience of the one-way valve of the present application. The first valve seat 16 and the second valve seat 17 have the same structure, and both are provided with a rotating connecting portion 11, a through hole 12, an opening limiting portion 13, a closing limiting portion 14, and a mounting portion 15.

[0048] Further in combination with Figures 10 to 12As shown, in one embodiment, the valve plate 2 includes a valve plate body 20, a rotating shaft portion 21, a downstream impact surface 22, and a reverse impact surface 23 located on the back side of the downstream impact surface 22. The rotating shaft portion 21 is provided on the valve plate body 20, and is protruded from the valve plate body 20 along the radial direction of the valve plate body 20. The rotating shaft portion 21 is rotatably provided in the rotating hole 12. The rotating shaft portion 21 is integrally formed with the valve plate body 20. Of course, the rotating shaft portion 21 can also penetrate the valve plate body 20 and be fixed to the valve plate body 20.

[0049] The downstream impact surface 22 is used to withstand the impact of the medium when it flows forward, and the reverse flow impact surface 23 is used to withstand the impact of the medium when it flows reversely. One side of the reverse flow impact surface 23 is connected to the rotating shaft portion 21, and is arranged from the rotating shaft portion 21 to the downstream impact surface 22. When the one-way valve is in an open state, the reverse flow impact surfaces 23 of the two valve discs 2 are arranged opposite to each other, and along the axial direction of the valve seat 1, the distance between the reverse flow impact surfaces 23 of the two valve discs 2 gradually increases from the second ends 26 of the two valve discs 2 to the first ends 24 of the two valve discs 2.

[0050] With such a configuration, if the medium flows in reverse, the reverse flow impact surface 23 can withstand more impact of the reverse flow medium, increase the thrust of the reverse flow medium, and thus enable the valve plate 2 to close quickly and stably, reducing the impact of the reverse flow medium. At the same time, the reverse flow medium pushes the valve plate 2 to close the valve seat 1, which can avoid the valve plate 2 being too heavy due to the design of closing by gravity, thereby reducing the pressure drop caused by the valve plate 2 on the medium when the medium flows in the forward direction. The distance between the two reverse flow impact surfaces 23 is increased, so that more reverse flow medium can be accommodated at the beginning, increasing the contact area between the reverse flow impact surface 23 and the reverse flow medium, thereby increasing the thrust of the reverse flow medium and improving the closing speed of the valve plate 2.

[0051] Preferably, when the one-way valve is in an open state, the downstream impact surface 22 is perpendicular to the radial surface of the valve seat 1. The downstream impact surfaces 22 of the two valve discs 2 are arranged back to back and parallel to each other. The upstream impact surfaces 23 of the two valve discs 2 are arranged opposite to each other, and the angle between the two upstream impact surfaces 23 is not greater than 45 degrees and not less than 4 degrees. With such an arrangement, when the medium flows downstream through the one-way valve of the present application, the downstream impact surface 22 will not block the medium, so that the medium can achieve a better circulation effect. At the same time, if the medium flows in the reverse direction through the one-way valve of the present application, the two upstream impact surfaces 23 can withstand the impact of the medium, and the valve disc 2 closes the valve seat 1 under the action of the impact force of the medium.

[0052] For each valve plate 2, the downstream impact surface 22 is arranged as a straight surface, and the angle A between the upstream impact surface 23 and the downstream impact surface 22 is greater than 0 degrees and not greater than 15 degrees. In this way, the upstream medium can impact the upstream impact surface 23, and then the valve plate 2 can be closed quickly and stably under the impact force of the medium.

[0053] Furthermore, if the angle A between the countercurrent impact surface 23 and the concurrent flow impact surface 22 is equal to 0 degrees, the distance between the two countercurrent impact surfaces 23 will be relatively small, reducing the impact force exerted by the countercurrent medium on the countercurrent impact surface 23. As a result, the valve plate 2 fails to close in time, and an excessive amount of countercurrent medium flows into the device, affecting the performance of the device.

[0054] If the angle A between the countercurrent impact surface 23 and the concurrent flow impact surface 22 is greater than 15 degrees, the countercurrent impact surface 23 will be overly inclined, thereby reducing the thickness of the valve plate 2 and resulting in too low strength of the valve plate 2.

[0055] The valve plate 2 includes a countercurrent diffusion surface 25 and a concurrent flow guiding surface 27. The concurrent flow impact surface 22, the countercurrent impact surface 23, the countercurrent diffusion surface 25, and the concurrent flow guiding surface 27 are all provided on the valve plate body 20. One side of the countercurrent diffusion surface 25 is connected to the rotating shaft portion 21 and is disposed from the rotating shaft portion 21 towards the concurrent flow impact surface 22. The countercurrent diffusion surface 25 is disposed opposite to the countercurrent impact surface 23. When the one-way valve is in the open state, the countercurrent diffusion surfaces 25 of the two valve plates 2 are disposed opposite to each other, and along the axis direction of the valve seat 1, the distance between the two countercurrent diffusion surfaces 25 increases from the valve seat 1 to the second end 26 of the valve plate 2. With such a setting, it is avoided that the countercurrent diffusion surface 25 blocks the countercurrent medium and reduces the flow rate of the countercurrent medium, thereby ensuring that the countercurrent medium can flow smoothly. At the same time, when the medium flows concurrently, the countercurrent diffusion surface 25 can also guide the medium so that the medium can flow smoothly between the two valve plates 2.

[0056] The concurrent flow guiding surface 27 is provided as an arc surface and is connected between the countercurrent diffusion surface 25 and the concurrent flow impact surface 22. The concurrent flow guiding surface 27 can guide the concurrent flow medium so that the medium can flow smoothly through the valve plate 2 and the valve seat 1. The second end 26 is located between the concurrent flow guiding surface 27 and the countercurrent diffusion surface 25. When the one-way valve is in the closed state, the second ends 26 of the two valve plates 2 are in contact with each other to block the countercurrent medium.

[0057] In this application, the direction of the axis of the valve seat 1 is the Z-axis direction; the protruding direction of the opening limiting portion 13 and the recessed direction of the rotating hole 12 are both parallel to the X-axis direction; when the one-way valve is in the open state, the linear distance direction between the countercurrent diffusion surfaces 25 of the two valve plates 2 is parallel to the Y-axis direction. For details, please refer to Figure 1 and Figure 4 .

[0058] This application also provides an air conditioning device, including a compressor and the one-way valve as described above. The one-way valve is provided on the compressor. Specifically, the one-way valve is provided at the outlet of the compressor, and by closing the one-way valve, it is avoided that the countercurrent medium flows into the compressor from the outlet of the compressor, affecting the performance of the compressor.

[0059] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A one-way valve, characterized in that: It comprises a valve seat and two valve plates rotatably arranged on the valve seat; Each of the valve plates includes a rotating shaft portion, a first end, and a second end, and each of the valve plates also includes a downstream impact surface extending from the second end toward the first end and a downstream impact surface located on the back side of the downstream impact surface; When the one-way valve is in an open state, the countercurrent impact surfaces of the two valve plates are arranged opposite to each other, and along the axial direction of the valve seat, the distance between the countercurrent impact surfaces of the two valve plates gradually increases from the second ends of the two valve plates to the first ends of the two valve plates.

2. The one-way valve according to claim 1, characterized in that: For each valve plate, the downstream impact surface is arranged as a straight surface; the upstream impact surface is arranged from the rotating shaft portion toward the downstream impact surface, and an angle A between the upstream impact surface and the downstream impact surface is greater than 0 degrees and not greater than 15 degrees.

3. The one-way valve according to claim 1, characterized in that: Each of the valve plates also includes a countercurrent diffusion surface; One side of the countercurrent diffusion surface is connected to the shaft portion, and is arranged from the shaft portion toward the downstream impact surface; the countercurrent diffusion surface is arranged away from the countercurrent impact surface; When the one-way valve is in an open state, the countercurrent diffusion surfaces of the two valve plates are arranged opposite to each other, and along the axial direction of the valve seat, the distance between the two countercurrent diffusion surfaces increases from the valve seat to the second end of the valve plate.

4. The one-way valve according to claim 1, characterized in that: The valve seat comprises a rotating portion and a rotation hole which is concavely arranged inwardly from the rotating portion in a direction perpendicular to the axis of the valve seat, and the rotating shaft portion of each valve plate is rotatably arranged in the rotation hole.

5. The one-way valve according to claim 4, characterized in that: The rotating hole is set as a waist-shaped hole, and the rotating hole is provided with an upper rotating part and a lower rotating part; when the one-way valve is in an open state, the rotating shaft part is located at the upper rotating part; when the one-way valve is in a closed state, the rotating shaft part is located at the lower rotating part.

6. The one-way valve according to claim 5, characterized in that: The rotating holes are symmetrically arranged at the rotating connection part; the angle B between the line connecting the two centers of the rotating holes and the straight line parallel to the valve seat axis and passing through any center of the rotating holes is greater than or equal to 0 degree and not greater than 45 degrees.

7. The one-way valve according to claim 4, characterized in that: The valve seat includes an opening limit portion; the opening limit portion protrudes from the rotating portion, and the protruding direction of the opening limit portion is opposite to the recessed direction of the rotating hole; at least part of the opening limit portion is located above the rotating hole, and when the one-way valve is in an open state, the two valve plates contact the opening limit portion.

8. The one-way valve according to claim 4, characterized in that: The valve seat also includes a closing limit portion protruding from the inner wall of the valve seat toward the axis of the valve seat; the closing limit portion is located below the rotating hole, and when the one-way valve is in a closed state, the two valve plates contact the closing limit portion.

9. The one-way valve according to claim 1, characterized in that: The valve seat is provided with a mounting portion; the mounting portion is used to mount the one-way valve; the valve seat comprises a first valve seat and a second valve seat which are detachably arranged; the valve sheet is engaged between the first valve seat and the second valve seat.

10. An air conditioning device, characterized in that: The invention comprises a compressor and a one-way valve according to any one of claims 1 to 9, wherein the one-way valve is arranged on the compressor.

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