Oil supply device for compressor, compressor, and refrigeration equipment

Patent metadata

Field	Value
Publication number	US-12448959-B2
Application number	US-202218720334-A
Country	US
Kind code	B2
Filing date	Nov 15, 2022
Priority date	Dec 17, 2021
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

The present application discloses an oil supply device of a compressor, a compressor and a refrigeration equipment, the oil supply device of a compressor comprising: a piston cylinder with an inner chamber, a piston, an outer housing, and an oil intake passage and an oil discharge passage, the oil intake passage comprises an oil intake chamber, an oil inlet and an oil outlet; the side wall of the oil intake chamber has an arcuate flow guide portion to direct flow between the oil inlet and the oil outlet. The application can create a vortex in the oil intake chamber after the oil entering the oil intake chamber from the oil inlet, thereby improving the oil suction efficiency.

First claim

What is claimed is:

1. An oil supply device for a compressor, comprising: a piston cylinder with an inner chamber, a piston slidingly disposed in the inner chamber, an outer housing cooperating with the piston cylinder, the outer housing has a housing groove, one end of the piston cylinder extends into the housing groove, and an oil intake passage and an oil discharge passage provided on the outer housing;
the oil intake passage comprises an oil intake chamber extending horizontally, a bottom wall of the oil intake chamber arranged adjacent to the piston cylinder and a side wall of the oil intake chamber connected to the periphery of the bottom wall and extending horizontally away from the piston cylinder, an oil inlet set on the side wall of the oil intake chamber, and an oil outlet set on the bottom wall of the oil intake chamber that communicates with the inner chamber; the extending direction of the oil intake chamber is a horizontal direction and parallel to a sliding direction of the piston;
the side wall of the oil intake chamber has an arcuate flow guide portion to direct flow between the oil inlet and the oil outlet.

2. The oil supply device for the compressor according to claim 1 , wherein the oil inlet is located at a bottom of the side wall of the oil intake chamber, and the oil inlet and the oil outlet are misaligned with each other in a lateral direction, the lateral direction is the horizontal direction and perpendicular to the sliding direction of the piston, there is a certain distance between the projection of the oil inlet and the projection of the oil outlet in the lateral direction.

3. The oil supply device for the compressor according to claim 2 , wherein one end of the arcuate flow guide portion extends to the oil inlet, the other end of the arcuate flow guide portion extends above the oil outlet, and the arcuate flow guide portion curved in a direction away from the oil outlet;
and the shape of the arcuate flow guide portion conforms to an Archimedean spiral, the radius of the arcuate flow guide portion is proportional to the rotation angle.

4. The oil supply device for the compressor according to claim 1 , wherein an opening direction of the oil outlet is parallel to the sliding direction of the piston.

5. The oil supply device for the compressor according to claim 1 , wherein the oil discharge passage comprises an oil discharge chamber which is arranged parallel to the oil intake chamber in a lateral direction, a bottom wall of the oil discharge chamber arranged adjacent to the piston cylinder and a side wall of the oil discharge chamber connected to the periphery of the bottom wall and extending horizontally away from the piston cylinder, an oil discharge outlet on the side wall of the oil discharge chamber and an oil discharge inlet on the bottom wall of the oil discharge chamber; the lateral direction is the horizontal direction and perpendicular to the sliding direction of the piston;
the oil discharge inlet communicates with the inner chamber, and the oil discharge outlet is located at a top of the oil discharge chamber by a vertical direction, the vertical direction is perpendicular to the lateral direction and the sliding direction of the piston.

6. The oil supply device for the compressor according to claim 5 , wherein the oil discharge outlet is positioned opposite to the oil inlet in the vertical direction;
the outer housing also has an oil discharge hole communicating with the oil discharge outlet and an oil intake hole communicating with the oil inlet, the outlet of the oil discharge hole is positioned opposite to the inlet of the oil intake hole, the outlet of the oil discharge hole and the inlet of the oil intake hole are respectively located on the top and bottom surfaces of the outer housing, the top and bottom surfaces of the outer housing are arranged along the vertical direction;
and the inlet of the oil intake hole is located at a lowest point of the bottom surface of the outer housing.

7. The oil supply device for the compressor according to claim 5 , wherein the oil discharge chamber and the oil intake chamber are separated by a partition plate, the arcuate flow guide portion located at a side of the partition plate facing the oil intake chamber.

8. The oil supply device for the compressor according to claim 7 , wherein the outer housing comprises a housing body with a housing groove and a separation board located in the housing groove and parallel to the bottom of the housing groove;
and the separation board separates the housing groove into an oil chamber and an external chamber, the partition plate is disposed in the oil chamber and separates the oil chamber into the oil discharge chamber and the oil intake chamber;
and wherein the oil discharge inlet and the oil outlet are arranged side by side on the separation board.

9. The oil supply device for the compressor according to claim 8 , wherein the partition plate is fixed to the separation board and forms a separator with the separation board, the separator is positioned in the housing groove, and the partition plate is abut against the bottom plate of the housing groove.

10. The oil supply device for the compressor according to claim 9 , wherein the partition plate has a partition portion located between the oil intake chamber and the oil discharge chamber, a first enclosing plate and a second enclosing plate are set at both ends of the partition portion, the first enclosing plate and the second enclosing plate are integrally formed with the partition portion;
and wherein the first enclosing plate and the second enclosing plate form an S-shape with the partition portion, and both the first enclosing plate and the second enclosing plate abut against the bottom of the housing groove;
and both the first enclosing plate and the second enclosing plate are extended and arranged at an edge of the separation board, the free end of the first enclosing plate and the partition portion form the oil inlet, the free end of the second enclosing plate and the partition portion form the oil discharge outlet.

11. The oil supply device for the compressor according to claim 9 , wherein the bottom wall of the piston cylinder has a piston cylinder oil inlet and a piston cylinder oil outlet, the piston cylinder oil inlet is positioned opposite to the oil outlet, and the piston cylinder oil outlet is positioned opposite to the oil discharge inlet;
and the partition plate is located in the housing groove, the end of the piston cylinder extends into the housing groove fixes the separator against the bottom of the housing groove.

12. The oil supply device for the compressor according to claim 11 , wherein the oil supply device for a compressor further comprising an oil valve located between the piston cylinder and the separation board, the oil valve comprises a valve seat frame, an oil intake valve plate and an oil discharge valve plate, the oil intake valve plate and the oil discharge valve plate are fixed to the valve seat frame by elastic connection plates;
and the piston cylinder has an oil intake avoidance space opposite to the oil intake valve plate, the separation board has an oil intake limiting portion for abutting against the oil intake valve plate, the oil intake valve plate blocks the oil outlet in the initial state;
and the piston cylinder has an oil discharge limiting portion for abutting against the oil discharge valve plate, the separation board has an oil discharge avoidance space opposite to the oil discharge valve plate, the oil discharge valve plate blocks the piston cylinder oil outlet in the initial state.

13. The oil supply device for the compressor accordin

Assignees

• Qingdao haier refrigerator co ltd
• Haier Smart Home Co Ltd
• Qingdao Hairer Refrigerator Co Ltd

Inventors

• Qi Feifei
• Liu Jianru
• Zhang Kui
• Wang Yiming
• Chi hualong

Classifications

• F04B39/0284

  Constructional details, e.g. reservoirs in the casing (swash-plate compressors F04B27/0878, F04B27/109) · CPC title

• F04B39/123

  Fluid connections · CPC title

• F04B39/02

  Lubrication (of machines or engines in general F01M) · CPC title

• F04B39/0276 Primary

  the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors · CPC title