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EP-4741678-A1 - DAMPING DEVICE AND VALVE COMPRISING SAME

EP4741678A1EP 4741678 A1EP4741678 A1EP 4741678A1EP-4741678-A1

Abstract

A damping device (110), wherein a housing (111) defines a chamber (240) filled with a damping liquid, and partition portions (213) on an inner wall (211) of the housing (111) define extreme positions (201); a damping control core (112) in the chamber (240) can rotate relative to the housing (111), and wing portions (232) of the damping control core (112) are provided with limiting surfaces (233) capable of being stopped by the partition portions (213); the chamber (240) comprises proximal accommodating cavities (241) and distal accommodating cavities (242) formed by partitioning by the partition portions (213) or the wing portions (232), and the volumes of each proximal accommodating cavity (241) and the corresponding distal accommodating cavity (213) change oppositely along with the movement of the damping control core (112) relative to the housing (111); inner connection channels (250) are formed in the wing portions (232) or the partition portions (213), and outer connection channels (270) are formed between the wing portions (232) and the inner wall (211) or between the partition portions (213) and the damping control core (112); and the inner and outer connection channels can be controllably connected to the proximal accommodating cavities (241) and the distal accommodating cavities (242); when the limiting surfaces (233) are not between a control position and the extreme positions (201) or when the limiting surfaces (233) move away from the extreme positions (201) between the control position and the extreme positions (201), the damping device (110) provides small damping; and when the limiting surfaces (233) move towards the extreme positions (201) between the control position and the extreme positions (201), the damping device (110) provides large damping.

Inventors

  • DING, Xiaofeng
  • LIN, KUN
  • XU, YUJUN
  • WEI, Donghong

Assignees

  • York Guangzhou Air Conditioning and Refrigeration Co., Ltd.
  • Tyco Fire & Security GmbH

Dates

Publication Date
20260513
Application Date
20240613

Claims (12)

  1. A damping device (110), comprising: a housing (111), wherein the housing (111) defines a chamber (240) that is generally cylindrical, the chamber (240) is filled with a damping liquid, and the housing (111) comprises partition portions (213) that project out of an inner wall (211) of the housing (111) to define extreme positions (201); a damping control core (112), wherein the damping control core (112) is disposed in the chamber (240) and can rotate relative to the housing (111), the damping control core (112) is provided with wing portions (232), and the wing portions (232) are provided with limiting surfaces (233) that face the extreme positions (201) and that are capable of being stopped by the partition portions (213), wherein when a distance (D) between the limiting surfaces (233) and the extreme positions (201) is a control distance (D 0 ), the limiting surfaces (233) reach a control position; wherein the chamber (240) comprises proximal accommodating cavities (241) close to the extreme positions (201) and distal accommodating cavities (242) away from the extreme positions (201), the proximal accommodating cavities (241) and the distal accommodating cavities (242) are formed by partitioning by the partition portions (213) or the wing portions (232), and the volumes of each proximal accommodating cavity (241) and the corresponding distal accommodating cavity (242) change oppositely along with the movement of the damping control core (112) relative to the housing (111); wherein inner connection channels (250) are formed in the wing portions (232), and outer connection channels (270) are formed between the wing portions (232) and the inner wall (211), or the inner connection channels (250) are formed in the partition portions (213), and the outer connection channels (270) are formed between the partition portions (213) and the damping control core (112); and wherein the inner connection channels (250) and the outer connection channels (270) can be controllably connected to the proximal accommodating cavities (241) and the distal accommodating cavities (242); wherein the damping device (110) is configured such that: when the limiting surfaces (233) are not between the control position and the extreme positions (201), communication areas of the outer connection channels (270) are increased so that the damping device (110) provides small damping; when the limiting surfaces (233) move towards the extreme positions (201) between the control position and the extreme positions (201), communication areas of the outer connection channels (270) and of the inner connection channels (250) are decreased so that the damping device (110) provides large damping; and when the limiting surfaces (233) move away from the extreme positions (201) between the control position and the extreme positions (201), communication areas of the outer connection channels (270) are decreased, and communication areas of the inner connection channels (250) are increased so that the damping device (110) provides small damping.
  2. The damping device (110) according to claim 1, further comprising: flow-limiting bosses (212), wherein the flow-limiting bosses (212) project out of the inner wall (211) of the housing (111) and extend along a circumferential direction, the flow-limiting bosses (212) extend from the partition portions (213) towards the wing portions (232) by the control distance (D 0 ), or the flow-limiting bosses (212) comprise proximal surfaces close to the extreme positions (201) and distal surfaces away from the extreme positions (201), wherein a distance from the proximal surfaces to the extreme positions (201) is not greater than a circumferential length of a radially outer side surface of the wing portions (232), and a distance from the distal surfaces to the extreme positions (201) is the control distance (D 0 ); and wherein communication areas of the outer connection channels (270) can be decreased by the flow-limiting bosses (212).
  3. The damping device (110) according to claim 2, wherein the damping control core (112) comprises a mandrel (231) and two wing portions (232) extending from the mandrel (231) to a radially outer side, two opposing sides of the partition portions (213) define two extreme positions (201) respectively, and the housing (111) is provided with two flow-limiting bosses (212) adjacent to the two extreme positions (201) respectively.
  4. The damping device (110) according to claim 1, further comprising: flow-limiting bumps (335), wherein the flow-limiting bumps (335) project out of an outer surface of the damping control core (112) and extend along a circumferential direction, the flow-limiting bumps (335) extend from the wing portions (232) towards the partition portions (213) by the control distance (D 0 ), or the flow-limiting bumps (335) comprise proximal surfaces close to the wing portions (232) and distal surfaces away from the wing portions (232), wherein a distance from the proximal surfaces to the limiting surfaces (233) is not greater than a circumferential length of a radially inner side surface of the partition portions (213), and a distance from the distal surfaces to the limiting surfaces (233) is the control distance (D 0 ); and wherein communication areas of the outer connection channels (270) can be decreased by the flow-limiting bumps (335).
  5. The damping device (110) according to claim 4, wherein the damping control core (112) comprises a mandrel (231) and at least one wing portion (232) extending from the mandrel (231) to a radially outer side; two opposing sides of one wing portion (232) of the at least one wing portion (232) provide two limiting surfaces (233) respectively; the damping control core (112) is provided with two flow-limiting bumps (335) adjacent to the two limiting surfaces (233) respectively; the housing (111) comprises two partition portions (213); and the two partition portions (213) define two extreme positions (201) respectively.
  6. The damping device (110) according to any one of claims 1-5, further comprising: channel control cores (260), wherein the channel control cores (260) are movably disposed in the inner connection channels (250); wherein shapes of the inner connection channels (250) are configured such that communication areas of the inner connection channels (250) can be increased or decreased by adjusting positions of the channel control cores (260) in the inner connection channels (250).
  7. The damping device (110) according to claim 6, wherein the inner connection channels (250) comprise proximal channels (251), middle channels (253), and distal channels (252) connected sequentially, the proximal channels (251) are adjacent to the proximal accommodating cavities (241) and are in fluid connection with the proximal accommodating cavities (241), the distal channels (252) are adjacent to the distal accommodating cavities (242) and are in fluid connection with the distal accommodating cavities (242), and the channel control cores (260) are movably disposed in the middle channels (253).
  8. The damping device (110) according to claim 7, wherein the middle channels (253) and the channel control cores (260) extend generally along an axial direction, and the proximal channels (251) and the distal channels (252) extend generally along a circumferential direction or extend generally along a direction at an acute angle to the circumferential direction; wherein when the channel control core (260) moves to an end (2531) of the middle channel (253) close to the proximal channel (251), the communication area of the inner connection channel (250) is S 1 ; and when the channel control core (260) moves to an end (2532) of the middle channel (253) close to the distal channel (252), the communication area of the inner connection channel (250) is S 2 , wherein S 1 is greater than S 2 .
  9. The damping device (110) according to claim 8, wherein the channel control cores (260) are cylindrical over at least a portion of the length, radial sections of the middle channels (253) are oblong holes, and the oblong holes extend generally along the circumferential direction.
  10. The damping device (110) according to claim 8, wherein the inner connection channel (250) comprises a plurality of proximal channels (251), and the plurality of proximal channels (251) are arranged at intervals generally along the axial direction; and/or the inner connection channel (250) comprises a plurality of distal channels (252), and the plurality of distal channels (252) are arranged at intervals generally along the axial direction.
  11. The damping device (110) according to any one of claims 1-5, wherein decreasing communication areas of the outer connection channels (270) comprises closing the outer connection channels (270), and decreasing communication areas of the inner connection channels (250) comprises closing the inner connection channels (250).
  12. A valve (100), comprising a valve body (120), a valve core (130) and the damping device (110) according to any one of claims 1-11, wherein one of the valve body (120) and the valve core (130) is fixedly connected to the housing (111) of the damping device (110), and the other of the valve body (120) and the valve core (130) is fixedly connected to the damping control core (112) of the damping device (110).

Description

Technical Field Embodiments of the present disclosure generally relate to a damping device and a valve comprising same. Background Art A check valve is usually required to have a relatively small flow resistance to ensure sensitive opening and closing responses. However, in many applications, the flow rate or pressure of a medium is not stable. Sometimes, the flow rate or pressure of the medium is very small, and a valve disc of the check valve cannot maintain a stable small opening and will frequently collide with a valve seat sealing surface. Sometimes, the flow rate or pressure of the medium is very large, and the valve disc will frequently collide with the maximum opening limit of the check valve. Under such circumstances, the check valve will emit extremely disturbing noises, and even loud sounds, and cause damage to the valve seat sealing surface and the maximum opening limit, thereby shortening the service life of the check valve. Summary of the Invention According to a first aspect of the present disclosure, the present disclosure provides a damping device, comprising a housing and a damping control core. The housing defines a chamber that is generally cylindrical, the chamber is filled with a damping liquid, and the housing comprises partition portions that project out of an inner wall of the housing to define extreme positions. The damping control core is disposed in the chamber and can rotate relative to the housing, the damping control core is provided with wing portions, and the wing portions are provided with limiting surfaces that face the extreme positions and that are capable of being stopped by the partition portions, wherein when a distance between the limiting surfaces and the extreme positions is a control distance, the limiting surfaces reach a control position. Wherein the chamber comprises proximal accommodating cavities close to the extreme positions and distal accommodating cavities away from the extreme positions, the proximal accommodating cavities and the distal accommodating cavities are formed by partitioning by the partition portions or the wing portions, and the volumes of each proximal accommodating cavity and the corresponding distal accommodating cavity change oppositely along with the movement of the damping control core relative to the housing. Wherein inner connection channels are formed in the wing portions, and outer connection channels are formed between the wing portions and the inner wall, or the inner connection channels are formed in the partition portions, and the outer connection channels are formed between the partition portions and the damping control core. Wherein the inner connection channels and the outer connection channels can be controllably connected to the proximal accommodating cavities and the distal accommodating cavities. Wherein the damping device is configured such that: when the limiting surfaces are not between the control position and the extreme positions, communication areas of the outer connection channels are increased so that the damping device provides small damping; when the limiting surfaces move towards the extreme positions between the control position and the extreme positions, communication areas of the outer connection channels and of the inner connection channels are decreased so that the damping device provides large damping; and when the limiting surfaces move away from the extreme positions between the control position and the extreme positions, communication areas of the outer connection channels are decreased and communication areas of the inner connection channels are increased so that the damping device provides small damping. The damping device according to the above first aspect further comprises flow-limiting bosses. The flow-limiting bosses project out of the inner wall of the housing and extend along a circumferential direction; the flow-limiting bosses extend from the partition portions towards the wing portions by the control distance, or the flow-limiting bosses comprise proximal surfaces close to the extreme positions and distal surfaces away from the extreme positions, wherein a distance from the proximal surfaces to the extreme positions is not greater than a circumferential length of a radially outer side surface of the wing portions, and a distance from the distal surfaces to the extreme positions is the control distance. Wherein communication areas of the outer connection channels can be decreased by the flow-limiting bosses. In the damping device according to the above first aspect, the damping control core comprises a mandrel and two wing portions extending from the mandrel to a radially outer side, two opposing sides of the partition portions define the two extreme positions respectively, and the housing is provided with the two flow-limiting bosses adjacent to the two extreme positions respectively. The damping device according to the above first aspect further comprises flow-limiting bumps. The flow-li