Title:
SIDE PANEL FOR USE IN PARENT-CHILD VANE PUMP AND DOUBLE ACTING PARENT-CHILD VANE PUMP
Document Type and Number:
WIPO Patent Application WO/2022/166045
Kind Code:
A1
Abstract:
A side panel for use in a parent-child vane pump and the double-acting parent-child vane pump, comprising a fluid suction window (43) in communication with a low-pressure cavity (11) and a fluid pressurizing window (44) in communication with a high-pressure cavity (52) that are positioned on the outer periphery; a low-pressure groove (45) and a high-pressure groove (46) that are positioned on the inner periphery and correspond respectively to the fluid suction window (43) and the fluid pressurizing window (44); and a high-pressure fluid groove (47) provided between the outer periphery and the inner periphery and in communication with the high-pressure cavity (52); the high-pressure fluid groove (47) being in communication with the high-pressure groove (46) via a balancing groove (473); and the high-pressure fluid groove (47) being in communication with the high-pressure cavity (52) via a damping fluid channel (471). With the balancing groove (473) provided between the high-pressure fluid groove (47) and the high-pressure groove (46) of the side panel (4), the high pressure that occurs when a parent vane (321) is located at the position of a fluid pressuring stop point is effectively balanced, thus reducing wears and tears of a fluid pressuring area on the surface of an inner cavity of a stator (2) when located at the position.
Inventors:
WANG HONGJI (CN)
Application Number:
PCT/CN2021/097020
Publication Date:
August 11, 2022
Filing Date:
May 29, 2021
Export Citation:
Assignee:
TAIZHOU HONGYI HYDRAULIC SERVO TECH CO LTD (CN)
International Classes:
F04C2/344; F04C15/00
Foreign References:
| CN112648183A | 2021-04-13 | |||
| CN209261810U | 2019-08-16 | |||
| CN110131162A | 2019-08-16 | |||
| CN208123063U | 2018-11-20 | |||
| CN2791302Y | 2006-06-28 | |||
| CN209195697U | 2019-08-02 | |||
| US20180128107A1 | 2018-05-10 |
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