CN203614414U

CN203614414U - Compressor body of industrial refrigeration compressor

Info

Publication number: CN203614414U
Application number: CN201320852188.3U
Authority: CN
Inventors: 郭粟雯
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-23
Filing date: 2013-12-23
Publication date: 2014-05-28
Anticipated expiration: 2023-12-23

Abstract

The utility model discloses a compressor body of an industrial refrigeration compressor. A radial air suction hole (3) is formed in the inner surface of a rotor cavity (2); an inner cavity hole wall dug hole (4) is formed below the radial air suction hole (3); an air inlet (5) connected with the radial air suction hole (3) is formed in the bottom of a compressor shell (1); a valve rod positioning boss (7) is arranged at the junction of the outer surface of the rotor cavity (2) above the air inlet (5); an air outlet cavity (8) is formed in one side of the compressor shell (1); a secondary air outlet cavity (10) is formed in a connecting surface between the compressor shell (1) and a compressor valve plate; the air outlet cavity is communicated with the secondary air outlet cavity through a secondary air outlet (9); a noise reduction air inlet and a noise reduction air outlet in the secondary air outlet cavity and the compressor valve plate respectively correspond to each other. According to the compressor body, the working efficiency of the compressor can be improved, the noise can be reduced, the equipment wear can be reduced, and the running process is stable.

Description

Industrial refrigeration compressor block

Technical field

The utility model relates to a kind of compressor block.

Background technique

Compressor is one of important constituent element of refrigeration system, it is from the refrigerant gas of sucking pipe suction low-temp low-pressure, after driving piston to compress it by motor rotation, discharge the refrigerant gas of High Temperature High Pressure to outlet pipe, for refrigeration cycle provides power, thereby realize the refrigeration cycle of compression condensation-expansion-evaporation.Compressor is generally made up of body, motor, cylinder body, piston, control apparatus (starter and heat protector) and cooling system.

What existing refrigeration compressor body adopted is double walled shell construction, and it,, generally by general operating condition design, need to spray into a large amount of lubricant oil when use, for this reason must huge lubricating oil separation and the cooling unit of configuration.In addition, the air-breathing part of existing compressor is open structure, there is no backstop, and rotor reversing and the oily phenomenon of running quickly easily occur when compressor shutdown.How by rational casing structure design improve traditional compressor performance, improve its working efficiency, be that related domain scientific research personnel makes great efforts the direction of exploring always.

In addition, body plays a part fixed crankshaft and cylinder body in compressor, the stability of body affects the working condition of bent axle to a great extent, and the bent axle periodic vibration that rotatablely moves and bring to whole compressor has at work tested the stability of body.Between compressor crank shaft hole and bent axle, relative rotation speed is very fast, if there is some friction, just may reduce the input power of compressor, and bent axle there will be vibration in High Rotation Speed process, if after vibration runs up to a certain degree, easily cause the vibration of whole compressor, affect work.

Model utility content

Technical problem to be solved in the utility model is that a kind of industrial refrigeration compressor block is provided.Can improve the working efficiency of compressor, reduce noise, reduce equipment attrition, operate steadily, to overcome the defect of existing industrial refrigeration compressor block.

In order to solve this technical problem, the utility model by the following technical solutions:

Industrial refrigeration compressor block, comprises casing, it is characterized in that: in casing, be provided with rotor cavity, rotor cavity internal surface intersection offers radial suction, and the below of radial suction offers inner chamber hole wall borehole; The bottom of casing is provided with the suction port that can be connected with radial suction, and the rotor cavity outer surface intersection of suction port top is provided with valve rod positioning boss, on valve rod positioning boss, offers tapped hole; Suction port inside is provided with valve plate seam, and valve rod positioning boss and valve plate seam are for installing valve rod and the valve plate of suction non-return valve; One side of casing is also provided with exhaust die cavity, the junction surface of casing and compressor valve board is provided with a secondary exhaust die cavity, between described exhaust die cavity and secondary exhaust die cavity, be connected by secondary exhaust port, secondary exhaust die cavity is corresponding with noise reduction inlet hole and noise reduction air outlet hole on compressor valve board, and the aperture of noise reduction air outlet hole is 2.5 times of noise reduction inlet hole aperture.

Good effect of the present utility model is:

Valve rod positioning boss and the valve plate seam of the design of suction port place are convenient to the installation of suction non-return valve, thereby rotor reversing and the oily phenomenon of running quickly occur while preventing compressor shutdown.The inner chamber hole wall borehole that the below of radial suction is offered can make gas flow directly in the element volume that negative and positive rotor cavity forms along rotor shaft Vertical direction, and make air-breathing even, the pressure balance of the each teeth groove of negative and positive rotor, compressor air suction resistance and internal leakage are effectively reduced, increase compressor air suction amount, thereby meet refrigeration needs, improved the operational efficiency of unit.

Gas flows in cylinder, produces and impacts with casing wall collision because the reason of pressure can form turbulent flow in compressor, exhaust die cavity is set and can reduces the noise impacting, and make the flow direction of air-flow by secondary exhaust port in order.Because noise reduction air outlet hole is greater than noise reduction inlet hole, so noise reduction inlet hole plays the effect of air inlet restriction, the kinetic energy of the air-flow by secondary exhaust noise silencing hole is reduced, play the effect that reduces noise, reduced the loss power of compressor simultaneously.This product that is arranged so that of plane bearing is all having greatly improved aspect prevention frictional loss and mechanical vibration in the time of operation.The plane bearing of being located in this annular groove is provided with two spacing preiections corresponding with spacing hole, has prevented the lateral movement of plane bearing.Due to the existence of this spacing hole, lubricant oil can more successfully enter in plane bearing.

So the utlity model has that noise is low, abrasion is little, operate steadily, the feature such as long service life.

Accompanying drawing explanation

Fig. 1 is the utility model side structure schematic diagram.

Fig. 2 is the utility model Facad structure schematic diagram.

Fig. 3 is the utility model overall structure schematic diagram.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1 and Figure 2, the utility model comprises casing 1, is provided with rotor cavity 2 in casing 1, and rotor cavity 2 internal surface intersections offer radial suction 3, and the below of radial suction 3 offers inner chamber hole wall borehole 4.The bottom of casing 1 is provided with the suction port 5 that can be connected with radial suction 3, and the rotor cavity 2 outer surface intersections of suction port 5 tops are provided with valve rod positioning boss 7, on valve rod positioning boss 7, offer tapped hole.Suction port 5 inside are provided with valve plate seam 6, and valve rod positioning boss 7 and valve plate seam 6 are for installing valve rod and the valve plate of suction non-return valve.

As shown in Figure 2, one side of casing 1 is also provided with exhaust die cavity 8, casing 1 is provided with a secondary exhaust die cavity 10 with the junction surface of compressor valve board, between described exhaust die cavity and secondary exhaust die cavity, be connected by secondary exhaust port 9, secondary exhaust die cavity is corresponding with noise reduction inlet hole and noise reduction air outlet hole on compressor valve board, and the aperture of noise reduction air outlet hole is 2.5 times of noise reduction inlet hole aperture.

The utility model is in the time of start work, and refrigerant vapour acts on the valve plate being located on valve plate seam 6 by suction port 5, and valve plate is moved along the valve rod being assemblied on valve rod positioning boss 7.Like this, refrigerant vapour is divided into two-way and flows in the element volume that forms of rotor cavity 2: a curb axially intakeport and flowed into, and another road directly flows into along inner chamber hole wall borehole 4, radial suction 3.Tapped hole on valve rod positioning boss 7 is used for assembling valve rod, and work schedule refrigerant vapour does not enter in rotor cavity 2 by the tapped hole on valve rod positioning boss 7.The utility model is in the time shutting down; rotor cavity 2 internal pressures are equal to exhaust pressure; valve plate on valve plate seam 6 is adjacent to rapidly valve plate seam 6 along valve rod under the effect of front and back pressure reduction and self gravitation; suction port 5 and rotor cavity 2 are effectively separated; prevent that refrigerant vapour in rotor cavity 2 and lubricant oil are along suction port 5 vaporizer that flows backwards back, the damage of also having avoided rotor to reverse to compressor.

Claims

1. industrial refrigeration compressor block, comprise casing (1), it is characterized in that: in casing (1), be provided with rotor cavity (2), rotor cavity (2) internal surface intersection offers radial suction (3), and the below of radial suction (3) offers inner chamber hole wall borehole (4); The bottom of casing (1) is provided with the suction port (5) that can be connected with radial suction (3), and rotor cavity (2) the outer surface intersection of suction port (5) top is provided with valve rod positioning boss (7), and valve rod positioning boss offers tapped hole on (7); Suction port (5) inside is provided with valve plate seam (6), and valve rod positioning boss (7) and valve plate seam (6) are for installing valve rod and the valve plate of suction non-return valve; One side of casing (1) is also provided with exhaust die cavity (8), casing (1) is provided with a secondary exhaust die cavity (10) with the junction surface of compressor valve board, between described exhaust die cavity and secondary exhaust die cavity, be connected by secondary exhaust port (9), secondary exhaust die cavity is corresponding with noise reduction inlet hole and noise reduction air outlet hole on compressor valve board, and the aperture of noise reduction air outlet hole is 2.5 times of noise reduction inlet hole aperture.