Gree Electric Appliances, Inc. of Zhuhai

Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai

Gree Green Refridgeration Technology Center Co., Ltd. of Zuhai

Rongting Zhang

Jia Xu

Liping Ren

Zhongcheng Du

Sen Yang

Shebing Liang

Yusheng Hu

Huijun Wei

Zhengliang Shi

Zhi Li

Lingchao Kong

Ning Ding

Jinquan Zhang

Pengkai Wan

Liying Deng

Xixing Liu

Shuang Guo

Liping Liao

Hui Huang

Mingzhu Dong

Fayou Luo

Fei Wu

Yibo Liu

Peilin Zhang

Jiakui Xu

Zhiming Wen

Shebing Ren

Hui Jun Wei

A piston limiting structure, including: a cylinder, a piston, and a flange provided with a limiting piece, the cylinder has a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, and a projection of the piston hole in a penetrating direction is circular. The piston is disposed in the piston hole in a form-fit manner and is slid in the piston hole in a reciprocating manner. A side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston. The limiting piece abuts against the thrust surface.

Piston limiting structure, compressor, and heat exchange apparatus

The present disclosure provides a pump body assembly, a heat exchange apparatus, a fluid machine and an operating method thereof. The pump body assembly includes a piston, a shaft, a piston sheath, and a cylinder. The shaft drives the piston to rotate and reciprocate within the piston sheath while rotating. The piston sheath is located in the cylinder, and a compression chamber is defined between an outer circumferential wall of the piston and an inner wall of the cylinder. A pressure relief recess is defined in the outer circumferential wall of the piston or the inner wall of the cylinder at a position corresponding to the compression chamber.

Pump body assembly, heat exchange apparatus, fluid machine and operating method thereof

Some embodiments of a disclosure provide a piston limiting structure, a compressor, and a heat exchange apparatus. The piston limiting structure includes: a cylinder, having a piston hole perpendicular to an axial direction of the cylinder and penetrating the cylinder, wherein a projection of the piston hole in a penetrating direction is circular; a piston, disposed in the piston hole and slid in the piston hole, wherein a side wall of the piston is provided with a limiting surface, and the limiting surface does not penetrate two ends of the side wall of the piston along an axial length of the piston; and a limiting member, wherein the cylinder is provided with a limiting hole penetrating from an outer wall of the cylinder to the piston hole, the limiting member is mounted in the limiting hole, and the limiting member abuts against the limiting surface.

A pump body assembly, fluid machinery, and a heat exchange device. The pump body assembly includes: at least two structure members; a cylinder disposed between the two structure members; and a piston assembly disposed in the cylinder. The piston assembly includes a piston sleeve and a piston slidably disposed in the piston sleeve; an upper end surface of the piston sleeve fits and is limited by a lower end surface of one structure member disposed above the piston sleeve, to prevent the piston sleeve from displacing along a radial direction relative to the one structure member, and effectively solving a problem in prior art that working efficiency of the pump body assembly is affected because the piston sleeve of the pump body assembly is prone to eccentrically rotate.

Pump body assembly with a piston sleeve having protrusions for limiting radial movement between the piston sleeve and the structural members

A pump body assembly and a compressor are provided. The pump body includes: a spindle, wherein the spindle has a sliding vane chute, a back pressure oil cavity being at least a part of an oil passage is located at a tail end of the sliding vane chute, an oil outlet of the back pressure oil cavity is located at the top of the back pressure oil cavity, and a position of the oil inlet of the back pressure oil cavity is lower than that of an oil outlet of the back pressure oil cavity such that a lubrication medium enters the back pressure oil cavity through the oil inlet of the back pressure oil cavity and fills up the back pressure oil cavity and flows out from the top of the back pressure oil cavity.

Pump body assembly and compressor

A pump assembly, fluid machinery, and a heat exchange device. The pump assembly includes: a lower flange; a lower friction-reducing ring; a cylinder, the lower friction-reducing ring being disposed inside the cylinder, and the lower flange being disposed below the cylinder; and a piston assembly arranged inside the cylinder and includes a piston sleeve and a piston slidably arranged inside the piston sleeve. The lower friction-reducing ring has a central hole. A position-limiting protrusion is disposed on a surface of the piston sleeve, which faces the lower flange. The limiting protrusion extends into the central hole of the lower friction-reducing ring, fits and is limited by the lower flange.

Pump body assembly, fluid machinery, and heat exchange device

A compressor pump structure comprises a rotating shaft, a piston, a cylinder, a cylinder sleeve, a lower flange and an upper flange, the central axis of the rotating shaft being arranged eccentrically with respect to the central axis of the cylinder, the rotating shaft being slidably arranged in the piston, the piston being movably arranged in the cylinder and forming two volume-variable chambers with the cylinder, the piston comprising two first sliding planes arranged opposite one another and two first contacting planes arranged opposite one another, the first contacting plane on the upper side being in sealing contact with the upper flange, and the first contacting plane on the lower side being in sealing contact with the lower flange. Also disclosed is a compressor with the compressor pump structure.

Compressor pump structure and compressor

A fluid machine, heat exchanger, and operating method of fluid machine. The fluid machine includes: a rotation shaft (), a cylinder (), and a piston assembly (). The rotation shaft () and the cylinder () are eccentrically disposed relative to each other and an eccentric distance is fixed. The piston assembly () has a variable volume chamber (). Because the eccentric distance between the rotation shaft () and the cylinder () is fixed, the rotation shaft () and the cylinder () rotate about their respective axes thereof during motion and the position of center of mass remains unchanged, so that the piston assembly () is allowed to rotate stably and continuously when moving in the cylinder (); and vibration of the fluid machine is mitigated, a regular pattern for changes in the volume of the variable volume cavity is ensured.

Fluid machinery, heat exchange equipment, and operating method for fluid machinery

A fluid machinery, a heat exchange equipment, and an operating method for the fluid machinery. The fluid machinery includes: an upper flange (); a lower flange (); a cylinder (); a rotating shaft (), the axis of the rotating shaft () being eccentric to the axis of the cylinder () and at a fixed eccentric distance; and a piston component (), the piston component () being provided with a variable volume cavity (). Because the eccentric distance between the rotating shaft () and the cylinder () is fixed, the rotating shaft () and the cylinder () rotate around the respective axes thereof during motion, and the position of the center of mass remains unchanged, so that the piston component is allowed to rotate stably and continuously when moving within the cylinder (); and vibration of the fluid machinery is effectively mitigated.

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Zhuhai, China

Rongting Zhang