A motor rotor assembly and compressor

Abstract

This invention provides a motor rotor assembly and a compressor. The motor rotor assembly includes an iron core and an integrated oil baffle. The integrated oil baffle is disposed at the top of the iron core and includes a plate, an outer sidewall, a flow hole, and guide vanes. The guide vanes include a connecting portion and an extension portion, and are structured to guide fluid containing refrigerant oil from the flow hole to flow along the outer sidewall. The integrated oil baffle's structural design enhances the turbulence effect, allowing refrigerant oil to easily fall back above the integrated oil baffle, reducing refrigerant oil leakage through the refrigerant transmission path and accumulation in the air conditioning system equipment, thus reducing compressor oil shortage problems and improving compressor reliability and air conditioning system efficiency. The motor rotor assembly of this invention has a simple structure, is easy to assemble, and simplifies the manufacturing process, reducing material and assembly costs.

Claims

1. A motor rotor assembly, comprising: an iron core including a top end, a bottom end, at least one flow channel, and a central shaft channel, wherein the top end and the bottom end are two opposite ends of the iron core, the at least one flow channel passes through the top end and the bottom end of the iron core and allows a fluid to pass through, and the central shaft channel passes through the top end and the bottom end of the iron core and has a central axis; and an integrated oil baffle plate disposed at the top end of the iron core, and comprising: a plate having a top surface and a bottom surface, wherein the top surface and the bottom surface are two opposite surfaces of the plate, and the bottom surface is opposite to the top end of the iron core; a peripheral sidewall connected to an outer periphery of the plate and having a first end edge; and a shaft hole passing through the top surface and the bottom surface of the plate and communicating with the central shaft channel of the iron core; At least one flow hole is disposed between the shaft hole and the peripheral sidewall and penetrates the top and bottom surfaces of the plate and is connected to the corresponding flow channel of the iron core; and at least one guide plate is connected to the top surface of the plate and is spatially disposed relative to the at least one flow hole, and includes a connecting portion and an extension portion, wherein the connecting portion is disposed adjacent to the at least one flow hole and the connecting portion is connected between the plate and the extension portion, the extension portion extends toward the peripheral sidewall, and the at least one guide plate is configured to guide the fluid to flow toward the peripheral sidewall.

2. The motor rotor assembly as described in claim 1, wherein, Each of the guide vanes has a projection area on the top surface of the integrated oil baffle, and the projection area at least partially overlaps with the corresponding flow hole.

3. The motor rotor assembly as described in claim 1, wherein, One of the extension surfaces of the extension portion has a first included angle with the top surface of the plate, the first end edge and the bottom surface of the plate have a first height along the central axis, and the central axis has a radius to the outer perimeter; wherein the first included angle is A1, the first height of the outer sidewall is H1, the radius of the outer perimeter is R, and the first included angle A1 corresponds to the first height H1 of the outer sidewall, and satisfies 14°≦Tan-1(H1 / R)≦35°.

4. The motor rotor assembly as described in claim 1, wherein, The first end edge and the bottom surface of the plate have a first height along the central axis direction, and the central axis has a radius from the outer perimeter; the first height of the outer sidewall is H1, the radius of the outer perimeter is R, and 0.2≦H1 / R≦0.6 is satisfied.

5. The motor rotor assembly as described in claim 1, wherein, The at least one flow hole includes a plurality of flow holes, and the at least one guide vane includes a plurality of guide vanes, wherein the plurality of flow holes are spaced apart from each other and arranged around the shaft hole, wherein the plurality of guide vanes are respectively arranged between the shaft hole and the corresponding flow hole, and are spaced apart from each other and arranged around the shaft hole, and respectively extend outward and upward from the top surface of the plate in a radial direction away from the central axis.

6. The motor rotor assembly as described in claim 1, wherein, The vertical distance from the connection point of the guide vane to the top surface of the plate to the bottom surface of the integrated oil baffle is greater than or equal to the thickness of the integrated oil baffle plate.

7. The motor rotor assembly as described in claim 1, wherein, The integrated oil baffle has at least one flow hole including a plurality of flow holes, which are equidistant from each other and arranged around the shaft hole, wherein the distance between two adjacent flow holes is greater than or equal to a thickness of the plate of the integrated oil baffle.

8. The motor rotor assembly as described in claim 1, wherein, The motor rotor assembly further includes a top counterweight block disposed on the top surface of the integrated oil baffle plate and located between the outer sidewall and the at least one guide vane. The integrated oil baffle plate further includes a plurality of first mounting holes that penetrate the top and bottom surfaces of the plate respectively. The iron core further includes a plurality of second mounting holes that penetrate the top and bottom ends of the iron core respectively. The top counterweight block includes at least one third mounting hole that penetrates both ends of the top counterweight block. The motor rotor assembly further includes at least one rivet that passes through at least one third mounting hole of the top counterweight block, a corresponding first mounting hole of the integrated oil baffle plate, and a corresponding second mounting hole of the iron core, thereby connecting and fixing the iron core, the integrated oil baffle plate, and the top counterweight block together.

9. The motor rotor assembly as described in claim 8, wherein, The outer sidewall includes a recess located on the first end edge of the outer sidewall, and the top counterweight is disposed corresponding to the recess.

10. The motor rotor assembly as described in claim 1, wherein, The motor rotor assembly further includes a main counterweight located at the bottom of the iron core.

11. The motor rotor assembly as described in claim 1, wherein, The integrated oil baffle plate, its outer sidewall, shaft hole, at least one flow hole, and at least one guide plate are a single component formed in one piece.

12. A compressor, comprising: a housing including a receiving space, an oil reservoir, an outlet pipe, and an inlet pipe, wherein the oil reservoir is located at a bottom of the receiving space, and the outlet pipe is disposed at a top of the housing and communicates with the receiving space; a motor disposed within the receiving space of the housing, and including a motor stator and a motor rotor assembly, wherein: The motor stator is fixed to an inner wall of the housing, and the motor rotor assembly is the motor rotor assembly of any one of claims 1-11, the motor rotor assembly being rotatably disposed on an inner side of the motor stator; and a compression pump is disposed within the receiving space of the housing and includes a cylinder and a ring, wherein the cylinder is connected to the inlet pipe, the ring is rotatably disposed within the cylinder, and the ring is connected to the central shaft of the motor rotor assembly of the motor via an eccentric shaft.

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