CN202391684U

CN202391684U - Connection structure for crank case for refrigeration compressor and internal air exhaust pipe

Info

Publication number: CN202391684U
Application number: CN2011205270066U
Authority: CN
Inventors: 姚辉军; 张韦林; 方伟涛; 陆龙泉; 李江国; 宋国华
Original assignee: Jiaxipera Compressor Co Ltd
Current assignee: Jiaxipera Compressor Co Ltd
Priority date: 2011-12-16
Filing date: 2011-12-16
Publication date: 2012-08-22
Anticipated expiration: 2021-12-16

Abstract

The utility model discloses a connection structure for a crank case for a refrigeration compressor and an internal air exhaust pipe. The connection structure comprises the crank case, a sealing ring, the internal air exhaust pipe and a screw, wherein an air exhaust hole and an air exhaust connection cavity are formed on the crank case; a muffling cavity is not formed on the crank case; the air exhaust hole is directly communicated with the lower end of the air exhaust connection cavity; and a muffling bag is arranged on the internal air exhaust pipe. The muffling cavity is not formed on the crank case, and the muffling bag is arranged on the internal air exhaust pipe, so that the casting process for the crank case is simple, and the casting cost is greatly reduced; and due to the muffling bag arranged on the internal air exhaust pipe, the increased materials are small, and the manufacturing cost is low, so that the materials and the manufacturing cost are reduced, and the production efficiency is improved.

Description

Refrigeration compressor is with the linkage structure of crankcase and inside exhaust pipe

Technical field

The utility model relates to the refrigeration compressor field, specifically a kind of linkage structure that is applied to the crankcase and the inside exhaust pipe of refrigeration compressor.

Background technique

During the refrigeration compressor operation, at exhaust phase, refrigeration agent, is discharged outside the compressor by inside exhaust pipe, housing outlet pipe through the exhaust port entering exhaust noise silencing chamber of crankcase through valve board assembly, cylinder head again.Exhaust noise silencing chamber volume is generally bigger, can adopt 1-2 grades of noise reductions, and mainly in order to reduce the pressure pulsation that the cylinder interior pressurized gas produces, and consequent cylinder, rotor receive the internal resonance that quickens vibration force and cause.Inside exhaust pipe adopts tubule footpath, multistage bending in design, to reduce the pipe flow velocity and the pressure of discharging gas.Usually on inside exhaust pipe, also assemble shock-absorbing spring, the pipeline that causes with further reduction high-speed gas resonates.Shown in Figure 1 is the linkage structure of existing a kind of crankcase of cooler compressor and inside exhaust pipe, is made up of crankcase 1, seal ring 2, inside exhaust pipe 3 and screw 4 etc.In conjunction with shown in Figure 2, crankcase 1 is provided with exhaust port 5, silencing cavity 6 and exhaust connection chamber 7, and silencing cavity 6 is connected through exhaust port 5 with exhaust connection chamber 7.During assembling, earlier seal ring 2 is put on the step surface of exhaust connection chamber 7, placed inside exhaust pipe 3 on the seal ring 2 then, put into screw 4 at last, tighten.The shortcoming of this linkage structure is: silencing cavity 6 cast shaping process difficulty are bigger, and manufacturing efficiency is low, and casting cost is high.

Summary of the invention

The utility model technical problem to be solved is to propose that a kind of casting technique is simple, the refrigeration compressor of low cost of manufacture is with the linkage structure on crankcase and inside exhaust pipe road.

For solving the problems of the technologies described above; The utility model refrigeration compressor comprises crankcase, seal ring, inside exhaust pipe and screw with the linkage structure of crankcase and inside exhaust pipe; Said crankcase is provided with exhaust port and exhaust connection chamber; Do not establish silencing cavity on the said crankcase, said exhaust port is directly logical with the lower ends of said exhaust connection chamber; Said inside exhaust pipe is provided with the noise reduction bag.

Above-mentioned refrigeration compressor is with the linkage structure of crankcase and inside exhaust pipe, and said noise reduction bag is that two ends are spherical, the cavity of middle column.

The utility model, is put into seal ring on the step surface in exhaust noise silencing chamber earlier during assembling owing to adopt said structure, puts inside exhaust pipe again, uses screw-driving at last.Owing to silencing cavity need be set on the crankcase, the substitute is the noise reduction bag is set on inside exhaust pipe, the casting technique of crankcase is simple like this, and casting cost reduces greatly; And material and manufacture cost that the increase of noise reduction bag is set on the inside exhaust pipe are few, can realize the decline of material and manufacture cost and the raising of manufacturing efficiency generally.

Description of drawings

Fig. 1 is the linkage structure schematic representation of existing refrigeration compressor with crankcase and inside exhaust pipe;

Fig. 2 is the partial sectional view of crankcase among Fig. 1;

Fig. 3 is the linkage structure schematic representation of the utility model refrigeration compressor with crankcase and inside exhaust pipe;

Fig. 4 is the partial sectional view of crankcase among Fig. 3.

Embodiment

As shown in Figure 3, the utility model compressor comprises crankcase 10, seal ring 2, inside exhaust pipe 9 and screw 4 with the linkage structure of crankcase and inside exhaust pipe, and inside exhaust pipe 9 is provided with noise reduction bag 8.Noise reduction bag 8 is that two ends are spherical, the cavity of middle column, and the noise reduction bag of this structure mainly contains three aspect effects: the one, can effectively utilize the inner space of compressor, and and crankcase, housing between guaranteed certain safe distance; The 2nd, alleviate the gas in the gas exhaust piping, thereby reduced compressor noise; The 3rd, because its wall thickness approaches (with respect to the silencing cavity in the existing structure 6), make that the inside and outside heat exchange of pipeline is easier, reduce delivery temperature, thereby improved compressor performance.

As shown in Figure 4, crankcase 10 is provided with exhaust port 11 and exhaust connection chamber 12, does not establish silencing cavity on the crankcase 10, and exhaust port 11 lower ends direct and exhaust connection chamber 12 are logical.

During assembling, earlier seal ring 2 is put into exhaust connection chamber 12, put into exhaust connection chamber 12 to inside exhaust pipe 9 then, put into screw 4 at last and tighten, realization is connected and seals.Because silencing cavity need be set on the crankcase 10, casting technique is simple, casting cost reduces greatly; And few on the inside exhaust pipe 9 because of material and manufacture cost that noise reduction bag 8 increases are set, can realize the decline of material and manufacture cost generally.Empirical tests, the utility model compressor meets each item requirement of performance test, reliability trial and batch process with the linkage structure of crankcase and inside exhaust pipe, realizes the decline of cost and the raising of manufacturing efficiency simultaneously.

Claims

1. refrigeration compressor is with the linkage structure of crankcase and inside exhaust pipe; Comprise crankcase, seal ring, inside exhaust pipe and screw; Said crankcase is provided with exhaust port and exhaust connection chamber; It is characterized in that, do not establish silencing cavity on the said crankcase, said exhaust port is directly logical with the lower ends of said exhaust connection chamber; Said inside exhaust pipe is provided with the noise reduction bag.

2. refrigeration compressor as claimed in claim 1 is characterized in that with the linkage structure of crankcase and inside exhaust pipe said noise reduction bag is that two ends are spherical, the cavity of middle column.