CN210715106U

CN210715106U - Rolling bearing rotor assembly for compressor

Info

Publication number: CN210715106U
Application number: CN201921401228.6U
Authority: CN
Inventors: 杨百昌; 李华军; 戴竟雄; 陈刚; 王骏刚
Original assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Current assignee: Huangshi Donper Compressor Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-06-09
Anticipated expiration: 2029-08-27

Abstract

A rolling bearing rotor assembly for a compressor relates to the technical field of compressor components. The rolling bearing rotor component for the compressor comprises a cylinder bearing seat, a cylinder connected with the cylinder bearing seat, a crankshaft rotatably connected with the cylinder bearing seat and a rolling bearing rotor with an eccentric hole, wherein the cylinder is provided with an air inlet, the cylinder bearing seat is provided with an air outlet, the rolling bearing rotor is sleeved on the crankshaft through the eccentric hole, and at least one part of the outer wall of the rolling bearing rotor is in interference fit or clearance fit with the inner wall of the cylinder bearing seat; when the crankshaft drives the rolling bearing rotor to rotate, gas enters the gas inlet and is discharged through the gas outlet. The application provides a rolling bearing rotor subassembly for compressor can reduce gas leakage, reduce power loss and improve the operating efficiency to effectual reduction assembly accuracy requires.

Description

Rolling bearing rotor assembly for compressor

Technical Field

The application relates to the field of compressor parts, in particular to a rolling bearing rotor assembly for a compressor.

Background

When the cylinder bearing seat of the existing compressor is connected with a crankshaft, a rolling rotor is often arranged at one end, extending out of the cylinder bearing seat, of the crankshaft, when the crankshaft rotates and drives the rolling rotor to rotate, eccentric clearance fit between the rolling rotor and the crankshaft and clearance fit between the rolling rotor and the inner wall of the cylinder bearing seat are achieved, and therefore the clearance precision between the rolling rotor and the cylinder bearing seat is strictly required, the assembling precision between the cylinder bearing seat and the crankshaft is required to be very high, otherwise, when the clearance is too large, the operation efficiency is greatly reduced due to leakage during the operation of the compressor, when the clearance is too small or no clearance exists, the operation power of the compressor is high or the crankshaft is blocked, in addition, when the eccentric clearance fit between the inner hole of the rolling rotor and the crankshaft causes rotation, the contact area.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a rolling bearing rotor subassembly for compressor, it can reduce gas leakage, reduce power loss and improve the operating efficiency to effectual reduction assembly accuracy requires.

The embodiment of the application is realized as follows:

the embodiment of the application provides a rolling bearing rotor assembly for a compressor, which comprises a cylinder bearing seat, a cylinder connected with the cylinder bearing seat and a crankshaft rotatably connected with the cylinder bearing seat, wherein the cylinder is provided with an air inlet, and the cylinder bearing seat is provided with an air outlet; the crankshaft is sleeved with the eccentric hole, and at least one part of the outer wall of the rolling bearing rotor is in interference fit or clearance fit with the inner wall of the bearing seat of the cylinder; when the crankshaft drives the rolling bearing rotor to rotate, gas enters the gas inlet and is discharged through the gas outlet.

In some optional embodiments, the inner wall of the cylinder is provided with a fixing groove, a pressure spring and a support pin are arranged in the fixing groove, one end of the support pin is pressed against the pressure spring, and the other end of the support pin extends out of the fixing groove and is pressed against the rolling bearing rotor.

In some optional embodiments, the rolling bearing rotor includes an inner ring provided with an eccentric hole, an outer ring sleeved on the inner ring, at least one set of rolling bodies arranged between the inner ring and the outer ring, and a rolling body cage corresponding to each set of rolling bodies.

In some alternative embodiments, the rolling bearing rotor and the crankshaft are interference fit.

The beneficial effect of this application is: the rolling bearing rotor assembly for the compressor comprises a cylinder bearing seat, a cylinder connected with the cylinder bearing seat, a crankshaft rotatably connected with the cylinder bearing seat and a rolling bearing rotor with an eccentric hole, wherein the cylinder is provided with an air inlet, the cylinder bearing seat is provided with an air outlet, the rolling bearing rotor is sleeved on the crankshaft through the eccentric hole, and at least one part of the outer wall of the rolling bearing rotor is in interference fit or clearance fit with the inner wall of the cylinder bearing seat; when the crankshaft drives the rolling bearing rotor to rotate, gas enters the gas inlet and is discharged through the gas outlet. The application provides a rolling bearing rotor subassembly for compressor can reduce gas leakage, reduce power loss and improve the operating efficiency to effectual reduction assembly accuracy requires.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a rolling bearing rotor assembly for a compressor according to an embodiment of the present disclosure;

fig. 2 is a cross-sectional view taken along line a-a in fig. 1.

In the figure: 100. a cylinder bearing block; 101. a crankshaft bore; 110. a crankshaft; 120. a rolling bearing rotor; 121. an eccentric hole; 122. an inner ring; 123. an outer ring; 124. a rolling body; 125. a rolling element cage; 130. a cylinder; 131. a limiting hole; 132. fixing grooves; 133. a pressure spring; 134. and (7) supporting the pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The features and properties of the rolling bearing rotor assembly for a compressor of the present application will be described in further detail below with reference to examples.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a rolling bearing rotor assembly for a compressor, which includes a cylinder bearing housing 100 having a crankshaft hole 101, a cylinder 130 having a limiting hole 131, a crankshaft 110, and a rolling bearing rotor 120, wherein the cylinder 130 is detachably connected to one side of the cylinder bearing housing 100 by a bolt, one end of the crankshaft 110 sequentially passes through the crankshaft hole 101 on the cylinder bearing housing 100 and the limiting hole 131 on the cylinder 130 and is connected to the rolling bearing rotor 120, the cylinder 130 has an air inlet, and the cylinder bearing housing 100 has an air outlet; the rolling bearing rotor 120 comprises an inner ring 122 provided with an eccentric hole 121, an outer ring 123 sleeved on the inner ring 122, two groups of rolling bodies 124 arranged between the inner ring 122 and the outer ring 123, and two rolling body retainers 125 corresponding to the two groups of rolling bodies 124, wherein the inner ring 122 of the rolling bearing rotor 120 is sleeved on the crankshaft 110 through the eccentric hole 121 in an interference fit manner, one side of the outer wall of the outer ring 123 of the rolling bearing rotor 120 is in an interference fit with the inner wall of one side of a limiting hole 131 of the cylinder 130, and each group of rolling bodies 124 comprises ten rolling balls arranged along the circumferential direction of; when the crankshaft 110 drives the rolling bearing rotor 120 to rotate, gas enters an air inlet of the air cylinder 130 and is exhausted through an air outlet of the air cylinder bearing seat 100, and a part of the outer wall of the outer ring 123 of the rolling bearing rotor 120 is in interference fit with a part of the inner wall of the limiting hole 131 of the air cylinder 130; a fixing groove 132 is further formed in the inner wall of the limiting hole 131 of the cylinder 130, a pressure spring 133 and a support pin 134 are arranged in the fixing groove 132, one end of the support pin 134 presses the pressure spring 133, the other end of the support pin 134 extends out of the fixing groove 132 and presses the rolling bearing rotor 120, and two ends of the pressure spring 133 respectively press the inner wall of the fixing groove 132 and the support pin 134.

The rolling bearing rotor assembly for the compressor provided by the embodiment of the application uses the rolling bearing rotor 120 with the eccentric hole 121 to replace the existing annular rotor, and the inner ring 122 of the rolling bearing rotor 120 is sleeved on the crankshaft 110 through the eccentric hole 121 in an interference fit manner, so that the outer wall of the outer ring 123 of the rolling bearing rotor 120 is pressed against the inner wall of the limiting hole 131 of the cylinder 130 connected with the cylinder bearing seat 100 in an interference fit manner, on one hand, the rolling bearing rotor 120 can be utilized to convert the rotating connection relationship between the rotor and the limiting hole 131 when the crankshaft 110 rotates into a rolling connection relationship, thereby effectively reducing the friction power consumption and improving the operating efficiency of the compressor; on the other hand, the rolling bearing rotor 120 is composed of an inner ring 122, an outer ring 123, a rolling body 124 and a rolling body retainer 125 which are arranged between the inner ring 122 and the outer ring 123, gaps existing between the rolling body 124 and the rolling body retainer 125 can also enable the assembly position and the precision requirement of the inner wall of the limiting hole 131 of the rolling bearing rotor 120 and the cylinder 130 to be greatly reduced, and the components are convenient to assemble, meanwhile, certain allowance can be achieved when the rolling bearing rotor 120 and the inner wall of the limiting hole 131 are in interference fit and press, the pressing degree between each other can be automatically adjusted when the rolling bearing rotor rotates, not only mutual blocking can not be caused, but also gas leakage can be greatly reduced, and therefore the operation efficiency of the compressor is.

When the rolling bearing rotor 120 is assembled to the crankshaft 110, the crankshaft 110 may be assembled by cooling, or the rolling bearing rotor 120 may be assembled by heating;

in some alternative embodiments, the cylinder bearing block 100 may further be connected to the cylinder 130 and may further include a set of rolling elements 124, three sets of rolling elements 124, or more than three sets of rolling elements 124. Alternatively, the number of rolling elements 124 in each set may also include four, six, eight, twelve, fourteen, sixteen, or more than sixteen rollers; alternatively, the rolling elements may also be rollers. In other alternative embodiments, the outer wall of the rolling bearing rotor 120 may also be in clearance fit with the inner wall of the cylinder bearing block 100; optionally, the outer wall of the rolling bearing rotor 120 may also be in clearance fit with the inner wall of the limiting hole 131 of the cylinder 130 connected to the cylinder bearing block 100.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims

1. A rolling bearing rotor component for a compressor comprises a cylinder bearing seat, a cylinder connected with the cylinder bearing seat and a crankshaft rotatably connected with the cylinder bearing seat, wherein the cylinder is provided with an air inlet, and the cylinder bearing seat is provided with an air outlet; the crankshaft is sleeved with the rolling bearing rotor through the eccentric hole, and at least one part of the outer wall of the rolling bearing rotor is in interference fit or clearance fit with the inner wall of the cylinder bearing seat; when the crankshaft drives the rolling bearing rotor to rotate, gas enters the gas inlet and is discharged through the gas outlet.

2. The rolling bearing rotor assembly for the compressor as claimed in claim 1, wherein a fixing groove is formed on an inner wall of the cylinder, a pressure spring and a support pin are disposed in the fixing groove, one end of the support pin presses against the pressure spring, and the other end of the support pin extends out of the fixing groove and presses against the rolling bearing rotor.

3. The rolling bearing rotor assembly for a compressor according to claim 1, wherein the rolling bearing rotor includes an inner ring provided with the eccentric hole, an outer ring sleeved on the inner ring, at least one set of rolling bodies provided between the inner ring and the outer ring, and a rolling body cage corresponding to each set of the rolling bodies.

4. The rolling bearing rotor assembly for a compressor of claim 1, wherein the rolling bearing rotor and the crankshaft are interference fit.