CN106640642A

CN106640642A - Twin-screw refrigeration compressor with elastic contact seal

Info

Publication number: CN106640642A
Application number: CN201611006619.9A
Authority: CN
Inventors: 宁静红; 梁友才; 毛力; 朱宗升
Original assignee: Tianjin University of Commerce
Current assignee: Tianjin University of Commerce
Priority date: 2016-11-16
Filing date: 2016-11-16
Publication date: 2017-05-10

Abstract

The invention discloses a twin-screw refrigeration compressor with an elastic contact seal. The twin-screw refrigeration compressor is characterized in that an exhaust hole is formed in an exhaust side end cover, corresponding to an exhaust position of a female rotor and a male rotor; the exhaust hole and an exhaust connection pipe are welded; a perforated main bearing hole is formed in the exhaust side end cover, corresponding to the position of a main shaft of the male rotor; a non-perforated driven shaft hole is formed in the exhaust side end cover, corresponding to a position of a driven shaft of the female rotor; a machine body is in sealing connection with the exhaust side end cover; a perforated groove is formed along the axial direction in a part, close to a junction between the internal walls of air cylinder holes of the female rotor and the male rotor on side of the exhaust hole, of the machine body; a spring is arranged in the groove; the length of a contact sealing sheet is consistent with the axial lengths of the air cylinder holes, and is inserted into the groove along the axial direction; the other side of the contact sealing sheet in the width direction is in contact with tooth tops of the female rotor and the male rotor under the elastic action of the spring; the male rotor is engaged to female rotor, and the male rotor and the female rotor are inserted into the air cylinder holes of the machine body along the axial direction. According to the twin-screw refrigeration compressor, the elastic contact seal is formed by employing the spring and the contact sealing sheet, a leak triangle is eliminated, the volumetric efficiency is improved, the operating efficiency of a refrigeration air-conditioning system is improved and the energy consumption is saved.

Description

Double-screw refrigeration compressor with Elastic Contact sealing

Technical field

The present invention relates to technical field of refrigeration compressors, is a kind of double-screw refrigeration compressor with Elastic Contact sealing.

Background technology

Double-screw refrigeration compressor is widely used in refrigerated air-conditioning system, but, the negative and positive rotor of double-screw refrigeration compressor The reasons such as the structure design and machining accuracy of tooth-shaped molded line, causing the highest meshing point of negative and positive rotor tooth form can not reach negative and positive On rotor cylinder-bore inwall intersection, i.e., the friendship of the peak of contact line, female rotor tooth top and two cylinder-bore intersections between negative and positive rotor Point, sun have turned tooth top and the intersection point of two cylinder-bore intersections forms curl leakage triangle, cause volumetric efficiency to reduce, and export tolerance Reduce, the thermal performance of refrigeration compressor declines, and such as reduce or stop a leak triangle, then can greatly improve twin-screw refrigeration The thermal performance of compressor, but the research report and specific embodiment of related the problems referred to above are there are no at present.

The content of the invention

The present invention is to overcome weak point of the prior art, there is provided one kind is stopped a leak triangle, improves volume Efficiency, improves the double-screw refrigeration compressor of thermal performance.

The present invention is achieved through the following technical solutions：

The double-screw refrigeration compressor with Elastic Contact sealing of the present invention, including male rotor, body, female rotor, contact Diaphragm seal, spring, support, male rotor main shaft, vent connection, air-breathing bolt of cover, air-breathing adapter, air-breathing side end cap, exhaust end Bonnet bolt and exhaust side end cap；The bottom correspondence yin, yang rotor exhaust position of the exhaust side end cap is provided with steam vent, steam vent It is welded to connect with vent connection, the position for being vented the bottom correspondence male rotor main shaft of side end cap offers the main bearing hole for running through, The side for being positioned against body of the bottom correspondence female rotor driven shaft of exhaust side end cap offers the driven-shaft hole not run through, institute State body to be connected with exhaust side end cap seal by exhaust end cover bolt and gasket seal, negative and positive of the body near steam vent side turn Sub- cylinder-bore inwall intersection, offers place in the groove for running through, groove spring vertically, contacts diaphragm seal and cylinder hole axle Consistent to length, contact diaphragm seal is axially inserted into groove, and contact diaphragm seal width side contacts with spring, contacts diaphragm seal Width opposite side under the elastic reaction of spring with the peak contact of negative and positive rotor, contact diaphragm seal two thickness direction sides Face is relative with groove to slide, and male rotor and female rotor are engaged and be axially inserted into the cylinder-bore for placing body, support and body It is welded to connect；The air-breathing side end cap correspondence female rotor driven shaft, the position of male rotor main shaft are respectively equipped with dead eye, suction side End cap correspondence negative and positive rotor suction position is provided with suction hole, and suction hole is welded to connect with air-breathing adapter, and air-breathing side end cap is by inhaling Gas bolt of cover and gasket seal are tightly connected with body.

The present invention has the following technical effect that：

The double-screw refrigeration compressor with Elastic Contact sealing of the present invention, using spring and contact diaphragm seal elasticity is formed Contact sealing, triangle of stopping a leak improves volumetric efficiency, improves the thermal performance of double-screw refrigeration compressor, improves refrigeration The operational efficiency of air-conditioning system, energy saving consumption.

Description of the drawings

Fig. 1 is the schematic diagram of double-screw refrigeration compressor of the present invention with Elastic Contact sealing；

Fig. 2 is the top view of the present invention.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail

As illustrated in fig. 1 and 2, the double-screw refrigeration compressor with Elastic Contact sealing of the invention, including male rotor 1, machine Body 2, female rotor 3, contact diaphragm seal 4, spring 5, support 6, male rotor main shaft 8, vent connection 9, air-breathing bolt of cover 10, air-breathing Adapter 11, air-breathing side end cap 12, exhaust end cover bolt 13 and exhaust side end cap 14.

The bottom correspondence negative and positive rotor exhaust position of the exhaust side end cap 14 is provided with steam vent and welds with vent connection 9 Connection, the position for corresponding to male rotor main shaft 8 offers the main bearing hole for running through, and correspond to the driven shaft of female rotor 3 is positioned against machine The side of body 2 offers the driven-shaft hole not run through, and the body 2 is by exhaust end cover bolt 13 and gasket seal and exhaust side End cap 14 is tightly connected, and body 2 offers vertically what is run through near the negative and positive rotor cylinder-bore inwall intersection of steam vent side Spring 5 is placed in groove, groove, contact diaphragm seal 4 is consistent with cylinder-bore axial length, is axially inserted into groove, its width Side contacts with spring 5, its width opposite side under the elastic reaction of spring 5 with the peak contact of negative and positive rotor, contact Two thickness direction sides of diaphragm seal 4 relative can be slided with groove, and male rotor 1 and female rotor 3 engage and be axially inserted into placement In the cylinder-bore of body 2, support 6 is welded to connect with body 2, and the position of the corresponding negative and positive armature spindle of the air-breathing side end cap 12 is provided with Dead eye, correspondence negative and positive rotor suction position is provided with suction hole and is welded to connect with air-breathing adapter 11, by air-breathing bolt of cover 10 and gasket seal be tightly connected with body 2.

As shown in figure 1, when refrigeration compressor runs, motor drives male rotor to turn clockwise by male rotor main shaft 8, Male rotor 1 drives female rotor 5 to rotate counterclockwise, and absorbs the low-temperature low-pressure refrigerant gas of evaporimeter by the He of air-breathing adapter 11 Suction hole, into the interdental spaces of negative and positive rotor, turns over air-breathing aperture air-breathing and terminates, into compression process, pressure rise, when reaching During to vent ports, the gas of HTHP entered steam vent and the discharge refrigeration compressor of vent connection 9, and contact diaphragm seal 4 exists Under the elastic reaction of spring 5 all the time with the peak contact of negative and positive rotor, eliminate triangle between yin, yang rotor and cylinder inner wall intersection The axial leakage of shape.

The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications Also should be regarded as protection scope of the present invention.

Claims

1. it is a kind of with Elastic Contact sealing double-screw refrigeration compressor, it is characterised in that including male rotor, body, female rotor, Contact diaphragm seal, spring, support, male rotor main shaft, vent connection, air-breathing bolt of cover, air-breathing adapter, air-breathing side end cap, row Gas bolt of cover and exhaust side end cap；The bottom correspondence yin, yang rotor exhaust position of the exhaust side end cap is provided with steam vent, arranges Pore is welded to connect with vent connection, and the position for being vented the bottom correspondence male rotor main shaft of side end cap offers the base bearing for running through Hole, the side for being positioned against body for being vented the bottom correspondence female rotor driven shaft of side end cap offers the driven shaft not run through Hole, the body is connected by exhaust end cover bolt and exhaust end cover gasket seal with exhaust side end cap seal, and body is near row The negative and positive rotor cylinder-bore inwall intersection of pore side, offers place in the groove for running through, groove spring vertically, contacts close Mounting is consistent with cylinder-bore axial length, and contact diaphragm seal is axially inserted into groove, contacts diaphragm seal width side and spring Contact, contact diaphragm seal width opposite side under the elastic reaction of spring with the peak contact of negative and positive rotor, contact sealing Two thickness direction sides of piece are relative with groove to slide, and male rotor and female rotor engage and be axially inserted into the cylinder of placement body Kong Zhong, support is welded to connect with body；The air-breathing side end cap correspondence female rotor driven shaft, the position of male rotor main shaft set respectively There is dead eye, air-breathing side end cap correspondence negative and positive rotor suction position is provided with suction hole, and suction hole is welded to connect with air-breathing adapter, inhales Gas side end cap is tightly connected by air-breathing bolt of cover and suction end cover seal pad with body.