CN202391740U

CN202391740U - Rotary compressor

Info

Publication number: CN202391740U
Application number: CN2011202623649U
Authority: CN
Inventors: 高斌
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-08-22
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a rotary compressor comprising a closed shell assembly formed by encircling an upper shell, a main shell and a lower shell, wherein a compression assembly and a motor assembly thereof are arranged in the shell assembly; the motor assembly is assembled by a motor stator and a motor rotor; a balance block is arranged on the motor rotor; and an inclined plane is arranged on one end face of the balance block along the radial direction. According to the utility model, the inclined plane is additionally arranged on the balance block so as to play a guiding role on exhaust gas from an exhaust muffler, therefore, the gas directly enters gaps between the motor stator and the motor rotor, and the situation that oil separated from the upper space of the motor returns an oil pool at the bottom of the compressor is influenced by the gas entering the gaps between the motor stator and the shells, so that the oil discharging quantity of the compressor is reduced; and the rotary compressor has the characteristics of simple and reasonable structure, flexibility in operation, low manufacturing cost and wide application range.

Description

Rotary compressor

Technical field

The utility model relates to a kind of compressor, particularly a kind of rotary compressor.

Background technique

In refrigeration system; Along with the circulation of refrigeration agent, the lubricant oil in the compressor can enter along with the exhaust of compressor in the system, and parts of lubricating oil can accumulate in the pipeline of heat exchanger; Form oil film; Can reduce the heat exchange efficiency of heat exchanger, and have influence on the oil return of compressor, perhaps cause compressor fault.Therefore, the oil drain quantity of reduction compressor all has great importance for refrigeration system efficiency and reliability lifting.

But; The oil drain quantity that reduces compressor relates to the integrated application of multi-door subject; Has certain complexity; From the direction of improving of compressor internal flow stream is one of one of them valid approach, and the stream that improves the compressor air-discharging fluid through the structural design of equilibrium block is a kind of simple and effective way.To this; Engineers and technicians make improvement to it; A kind of equilibrium block of rotary compressor rotor is disclosed on April 14th, 2010 like Chinese patent document number CN201438659U; This equilibrium block is semi-annular shape, and the upper surface at its two offers a circular pilot hole respectively, it is characterized in that: be evenly equipped with several vanes between two pilot holes of equilibrium block upper surface; Said vane comprises base and is vertically set on the blade of this base upper surface, and the center of circle of this blade surface and equilibrium block has angle near the line between the end of equilibrium block inner circle wall to blade and is a.It is said that it can solve compressor electric motor a large amount of refrigerator oils in the process of running up can effectively reduce the rotary compressor oil yielding rate along with the problem of refrigerant discharge compressor cavity.But this structure is comparatively complicated and manufacture cost is higher, restricts its Applicable scope.Therefore, be necessary to do further improvement and perfect.

The model utility content

The purpose of the utility model aim to provide a kind of simple and reasonable, assembling is easy, with low cost and effectively reduce the rotary compressor of oil pump capacity, to overcome deficiency of the prior art.

A kind of rotary compressor by this purpose design; Upper shell, main casing and lower shell body surround the frame set of a sealed mode; Be provided with compression assembly and electric machine assembly thereof in the frame set; This electric machine assembly is assembled by motor stator and rotor, and rotor is provided with equilibrium block, and its structure characteristic is that an end face of said equilibrium block radially is provided with the inclined-plane; The inclined-plane is a curve slope.

The two ends of said equilibrium block are respectively arranged with clearance position; This clearance position is a hierarchic structure, and the position of the corresponding rotor of clearance position is provided with more than one pilot hole.

Said compression assembly is arranged at the below of electric machine assembly; Compression assembly comprises eccentric crankshaft and is arranged at piston and the slide plate thereof in the cylinder; The upper and lower end of cylinder is respectively arranged with long bearing and minor axis holds; Eccentric crankshaft passes minor axis successively and holds the axis hole with long bearing, and is in transmission connection with rotor.

The top of said long bearing is provided with muffler, and the position of the corresponding equilibrium block of muffler is provided with more than one exhaust port, and the radius of exhaust port is R; Distance between the center of this exhaust port and the rotary part of eccentric crankshaft is L, and the inclined-plane on the equilibrium block is towards exhaust port.

The movement locus on the inclined-plane on the said equilibrium block is at the annulus that is projected as on plane, exhaust port place, and the external diameter of this annulus and internal diameter are respectively D1 and D2, and the position relation of annulus and exhaust port has L-R＜D1 or L+R>D2.

Set up curve slope on the equilibrium block of the utility model; Can play leading role to the gas that muffler is discharged; Let gas directly enter into motor stator and gap between rotor; Effectively avoid gas to get into the gap between motor stator and the housing, get back in the oil sump of compressor bottom, reduced the oil drain quantity of compressor and have influence on the isolated oil of motor upper space; It has simple and reasonable, flexible operation, fabricating cost is low and advantage of wide range of application.

Description of drawings

Fig. 1 is embodiment's sectional structure schematic representation of the utility model.

Fig. 2 is the main TV structure schematic representation of muffler.

Fig. 3 is the perspective view of the equilibrium block among Fig. 1.

Fig. 4 is the perspective view of equilibrium block of the prior art.

Among the figure: 1 is equilibrium block, and 2 is pilot hole, and 3 is the inclined-plane, and 11 is upper shell, and 12 is main casing; 13 is lower shell body, and 14 is motor stator, and 15 is rotor, and 16 is long bearing, and 17 hold for minor axis; 18 is eccentric crankshaft, and 19 is cylinder, and 20 is muffler, and 20.1 is exhaust port.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1-Fig. 3; This rotary compressor; Comprise that upper shell 11, main casing 12 and lower shell body 13 surround the frame set of a sealed mode; Be provided with compression assembly and electric machine assembly thereof in the frame set, compression assembly is arranged at the below of electric machine assembly, and compression assembly is assembled by eccentric crankshaft 18 and the piston and the slide plates thereof that are arranged in the cylinder 19.The upper and lower end of cylinder 19 is respectively arranged with long bearing 16 and holds 17 with minor axis, eccentric crankshaft 18 pass successively minor axis hold 17 with the axis hole of long bearing 16, and be in transmission connection with the rotor 15 of electric machine assembly.The top of long bearing 16 is provided with muffler 20.

Electric machine assembly also comprises motor stator 14, is provided with the gap between motor stator 14 and the rotor 15.Rotor 15 is provided with equilibrium block 1, and equilibrium block 1 is the semicircular ring flat structure, and an end face of equilibrium block 1 radially is provided with the inclined-plane 3 of arc.The position of muffler 20 corresponding equilibrium blocks 1 is provided with two exhaust ports 20.1, and the radius of exhaust port 20.1 is R, and the distance between the center of exhaust port and the rotary part of eccentric crankshaft is L.Inclined-plane 3 on the equilibrium block 1 is towards exhaust port 20.1; Its purpose is: with gas flow guiding to motor stator of discharging and the gap between the rotor; Avoid getting in the gap of stator and housing behind the gas collision equilibrium block, thereby influence oil return, cause the oil drain quantity of compressor excessive.The movement locus on the inclined-plane 3 on the equilibrium block 1 is at the annulus that is projected as on plane, exhaust port 20.1 place, and the external diameter of this annulus and internal diameter are respectively D1 and D2,, learn following relation: L-R＜D1 or L+R through experiment and calculating>D2.

The two ends of equilibrium block 1 are respectively arranged with clearance position; Clearance position is the hierarchic structure of right angle type; The position of the corresponding rotor 15 of clearance position is provided with two pilot hole 2, and this pilot hole 2 is rounded, makes equilibrium block 1 be connected more firm with rotor 15 through fastening piece.During work; The gas of discharging from muffler 20 is in the leading role that is the fusiform inclined-plane 3 of circular arc, directly flow direction motor stator 14 and rotor 15 between the gap, and upwards flow and be discharged to motor one end face space; Thereby significantly reduced gas and got into the gap between motor stator 14 and the main casing 12; Effectively improve the motor upper space to form oil film and influenced the heat exchange efficiency of heat exchanger, realizing reducing the oil drain quantity of compressor, and improved the overall performance of compressor.

Claims

1. rotary compressor; Comprise that upper shell (11), main casing (12) and lower shell body (13) surround the frame set of a sealed mode; Be provided with compression assembly and electric machine assembly thereof in the frame set; This electric machine assembly is assembled by motor stator (14) and rotor (15), and rotor (15) is provided with equilibrium block (1), it is characterized in that an end face of said equilibrium block (1) radially is provided with inclined-plane (3).

2. according to the said rotary compressor of claim 1, it is characterized in that said inclined-plane (3) is a curve slope.

3. according to the said rotary compressor of claim 2, it is characterized in that the two ends of said equilibrium block (1) are respectively arranged with clearance position; This clearance position is a hierarchic structure, and the position of the corresponding rotor of clearance position (15) is provided with more than one pilot hole (2).

4. according to the arbitrary said rotary compressor of claim 1-3; It is characterized in that said compression assembly is arranged at the below of electric machine assembly; Compression assembly comprises eccentric crankshaft (18) and is arranged at piston and the slide plate thereof in the cylinder (19); The upper and lower end of cylinder (19) is respectively arranged with long bearing (16) and minor axis holds (17), and eccentric crankshaft (18) passes the axis hole that minor axis holds (17) and long bearing (16) successively, and is in transmission connection with rotor (15).

5. according to the said rotary compressor of claim 4; The top that it is characterized in that said long bearing (16) is provided with muffler (20); The position of the corresponding equilibrium block of muffler (20) (1) is provided with more than one exhaust port (20.1), and the radius of exhaust port (20.1) is R; Distance between the center of this exhaust port (20.1) and the rotary part of eccentric crankshaft is L, and the inclined-plane (3) on the equilibrium block (1) is towards exhaust port;

The movement locus on the inclined-plane (3) on the said equilibrium block (1) is at the annulus that is projected as on plane, exhaust port (20.1) place, and the external diameter of this annulus and internal diameter are respectively D1 and D2, and the position relation of annulus and exhaust port (20.1) has L-R＜D1 or L+R＞D2.