CN201636012U

CN201636012U - Exhaust structure of rotary compressor

Info

Publication number: CN201636012U
Application number: CN 201020119122
Authority: CN
Inventors: 孟亮
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2010-02-10
Filing date: 2010-02-10
Publication date: 2010-11-17
Anticipated expiration: 2020-02-10

Abstract

The utility model relates to an exhaust structure of a rotary compressor, comprising a bearing or a middle partition plate with an exhaust hole, a deformable exhaust valve sheet and a baffle plate, wherein the deformable exhaust valve sheet is installed on the bearing or the middle partition plate and is used for blocking the exhaust hole; the baffle plate is installed on the bearing or the middle partition plate and is used for limiting the maximum deformation amount of the exhaust valve sheet; and the exhaust direction of the exhaust hole points at the extending direction of the opened exhaust valve sheet. The included angle between the axis of the exhaust hole and the exhaust valve sheet in a closed state is an acute angle. The outlet end surface of the exhaust hole is in a circular or elliptical shape. The head of the exhaust valve sheet, which is connected with the exhaust hole, is in a circular or elliptical shape. The bearing is a main bearing or an auxiliary bearing. The exhaust structure has the advantage of simple and reasonable structure and has the characteristics of avoiding or reducing energy loss caused by high-speed flow directly impacting the exhaust valve sheet, improving the working efficiency of the compressor and simultaneously reducing pneumatic noises in an exhaust process.

Description

The exhaust structure of rotary compressor

Technical field

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

Background technique

The exhaust structure of common rotary compressor is seen accompanying drawing 1-accompanying drawing 4, and this exhaust structure comprises the opening end that is installed in cylinder 2 and has the main bearing 5 or the supplementary bearing 9 of exhaust port 8; Be installed in the deformable exhaust valve plate 7 that is used for blocking exhaust port 8 on main bearing 5 or the supplementary bearing 9; Be installed in the snubber 6 that is used to limit exhaust valve plate 7 maximum distortions on main bearing 5 or the supplementary bearing 9.Exhaust port 8 is vertical round structure, and exhaust valve plate 7 has the rounded nose that matches with exhaust port 8.During exhaust, see accompanying drawing 5, exhaust airstream has at a high speed formed bigger eddy current and more disturbance at exhaust port 8 internal face places, and direct frontal impact exhaust valve plate 7, flows out after changing flow direction then; In its discharge process, owing to resistance has produced bigger gas energy loss and aerodynamic noise greatly, and then cause the decline of compressor operating efficient, therefore have much room for improvement.

The model utility content

The purpose of this utility model aim to provide a kind of simple and reasonable, avoid or reduce high velocity air because of the energy loss of directly impacting exhaust valve plate and causing, improve compressor operating efficient, reduce the exhaust structure of the rotary compressor of the aerodynamic noise in the exhaust process simultaneously, to overcome deficiency of the prior art.

Press the exhaust structure of a kind of rotary compressor of this purpose design, comprise the bearing or the central diaphragm that have exhaust port, be installed on bearing or the central diaphragm and block exhaust port deformable exhaust valve plate, be installed in the baffle plate that is used to limit the exhaust valve plate maximum deformation quantity on bearing or the central diaphragm, its structure characteristic is that the discharge directions of exhaust port is pointed to the direction of extension after exhaust valve plate is opened.

Angle between the axis of described exhaust port and the exhaust valve plate when being in closed condition is an acute angle.

The exit end face of described exhaust port is rounded or oval.The head that exhaust valve plate and exhaust port join is rounded or oval.

Described bearing is main bearing or supplementary bearing.

Direction of extension after the utility model is opened the discharge directions sensing exhaust valve plate of exhaust port, when making exhaust, high velocity air is the frontal impact exhaust valve plate no longer directly, but flow along the direction of extension of exhaust valve plate, therefore reduced to be positioned at the local losses of exhaust valve plate place high velocity air, reduced the inhibition of exhaust valve plate, thereby reduced the energy loss of gas in the exhaust process, improved the working efficiency of compressor high velocity air; Simultaneously, because the guide functions of exhaust port, reduced high velocity air with the valve block contact process in the high-speed gas whirlpool that produces, and the generation of this whirlpool and disengaging are the key factors that forms gas noise in the exhaust process, therefore, can also reduce the aerodynamic noise of exhaust process; And, can also reduce the concussion that valve block produces with airflow fluctuation in exhaust process, both reduced exhaust sound, reduce the fatigue of valve block again, also improved the reliability of valve block.

The cross-section area of the exhaust port in the utility model is greater than the section area of vertical exhaust port of the prior art, therefore when bearing same pressure reduction, the gas force that the head of exhaust valve plate is subjected to is bigger, make the easier unlatching of valve block, thereby the pressure reduction when helping reducing the exhaust valve plate unlatching, reduce the energy loss of exhaust process, thereby improve the working efficiency of compressor.

The utility model both can be arranged on the main bearing for the rotary compressor of single cylinder, also can be arranged on the supplementary bearing, can also be arranged on main bearing and the supplementary bearing simultaneously; For the rotary compressor of two cylinders or multi cylinder, except can being arranged on main bearing or supplementary bearing, can also be arranged on the central diaphragm.

The utlity model has simple and reasonable, avoid or reduce high velocity air because of the energy loss of directly impacting exhaust valve plate and causing, improve compressor operating efficient, reduce the characteristics of the aerodynamic noise in the exhaust process simultaneously.

Description of drawings

Fig. 1 is the sectional structure schematic representation of existing rotary compressor.

Fig. 2 is the plan structure schematic representation of existing exhaust structure.

Fig. 3 is that A-A among Fig. 2 is to the sectional structure schematic representation.

Fig. 4 is the local structure for amplifying schematic representation at the exhaust port place among Fig. 3.

Fig. 5 is when having the rotary compressor exhaust now, the air current flow schematic representation at exhaust port place.

Fig. 6 is the utility model one example structure schematic representation.

Air flow direction schematic representation when Fig. 7 is the utility model exhaust.

Fig. 8 is exhaust valve plate first embodiment's a local structure for amplifying schematic representation.

Fig. 9 is exhaust valve plate second embodiment's a local structure for amplifying schematic representation.

Figure 10 is exhaust valve plate the 3rd embodiment's a local structure for amplifying schematic representation.

When Figure 11 is the exhaust of the utility model rotary compressor, the air current flow schematic representation at exhaust port place.

Figure 12 is the utility model two example structure schematic representation.

Among the figure: 1 is liquid-storage container, and 2 is cylinder, and 3 is piston, 4 is bent axle, and 5 is main bearing, and 6 is baffle plate, 7 is exhaust valve plate, and 8 is exhaust port, and 9 is supplementary bearing, 10 is the motor stator parts, and 11 is motor rotor part, and 12 is main casing, 13 is upper shell, 14 is lower shell body, and 15 is tenminal block, and 16 is outlet pipe.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Below continue to use the reference character identical with background technique.

First embodiment

Referring to Fig. 6-Figure 11, the exhaust structure of this compressor, comprise the main bearing 5 that has exhaust port 8, be installed on the main bearing 5 and block the deformable exhaust valve plate 7 of exhaust port 8 and be installed in the baffle plate 6 that is used to limit exhaust valve plate 7 maximum deformation quantities on the main bearing 5 that the discharge directions of exhaust port 8 is pointed to the direction of extension after exhaust valve plate 7 is opened.Angle theta between the axis of exhaust port 8 and the exhaust valve plate 7 when being in closed condition is an acute angle.The exit end face of exhaust port 8 is rounded, ellipse or arbitrary polygon, divides and sees Fig. 8-Figure 10, and exhaust valve plate 7 is rounded or oval with the head that exhaust port 8 joins.

Second embodiment

Referring to Figure 12, main bearing 5 and supplementary bearing were located at two sides of cylinder 2 in 9 minutes, were respectively arranged with the baffle plate 6 identical with first embodiment, exhaust valve plate 7 and exhaust port 8 on main bearing 5 and the supplementary bearing 9.

All the other are not stated part and see first embodiment, no longer repeat.

Claims

1. the exhaust structure of a rotary compressor, comprise the bearing or the central diaphragm that have exhaust port (8), be installed on bearing or the central diaphragm and block exhaust port deformable exhaust valve plate (7), be installed in the baffle plate (6) that is used to limit the exhaust valve plate maximum deformation quantity on bearing or the central diaphragm, the discharge directions that it is characterized in that exhaust port is pointed to the direction of extension after exhaust valve plate is opened.

2. the exhaust structure of rotary compressor according to claim 1, the angle (θ) between the exhaust valve plate when it is characterized in that the axis of described exhaust port (8) and being in closed condition is an acute angle.

3. the exhaust structure of rotary compressor according to claim 1 and 2 is characterized in that the exit end face of described exhaust port (8) is rounded or oval.

4. the exhaust structure of rotary compressor according to claim 3 is characterized in that the head that described exhaust valve plate (7) and exhaust port (8) join is rounded or oval.

5. the exhaust structure of rotary compressor according to claim 3 is characterized in that described bearing is main bearing (5) or supplementary bearing (9).