CN1601104A

CN1601104A - Linkage structure between bearing in L-portion of revolving type compressor and center hole of silencer

Info

Publication number: CN1601104A
Application number: CN 03144471
Authority: CN
Inventors: 杨小峰; 刘永利; 王苏豫; 赵呈国; 莫洪清
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2003-09-28
Filing date: 2003-09-28
Publication date: 2005-03-30

Abstract

The invention discloses a kind of connection structure of the superior part bearing of rotary compressor and the center hole of silencer. It includes the superior part bearing and the silencer. The silencer is installed on the shaft bearing plate of the superior part bearing. The silencer is double layer structure, includes inner layer silencer and outer layer silencer each installed on the shaft bearing plate of the superior part bearing by bolt; each their central part is formed to a center hole. The superior part bearing is formed to a platform along its out circumference; the center hole of the outer layer silencer is fitted over the superior part bearing to make the outer layer silencer press on the platform. The center hole of the inner layer silencer is fitted over the superior part bearing to cooperate tightly with the bearing wall of the superior part bearing under the platform. The advantage of the invention is that its structure is simple, and its effect is notable; it can prevent the high pressure gaseous state secondary refrigerant from leaking out from the connection part of the superior part bearing of the rotary compressor and the center hole of silencer, sharply decreases the noise of the compressor.

Description

Linkage structure between the upper bearing of rotary compressor and the baffler center hole

Technical field

The present invention relates to a kind of rotary compressor, particularly relate to a kind of upper bearing of rotary compressor and the linkage structure between the baffler center hole.

Background technique

Rotary compressor is a kind of air compressor that is widely used in various refrigerators and the air conditioner, its working principle is the gaseous coolant that sucks through after the evaporator evaporation, after it is compressed to rated pressure, be discharged into the work cycle system of refrigerant again, rotary compressor can continuously suck and discharge gaseous coolant.

Fig. 1 is the sectional arrangement drawing of existing rotary compressor, and the compressor shown in the figure is the rolling rotor rotary compressor.As shown in Figure 1, rotary compressor has airtight casing 10, the stator 21 of motor and rotor 22 are installed in the top of casing 10, rotor 22 center fixed have eccentric shaft 30, cylinder block 40 is arranged on the bottom of airtight casing 10, the cylindrical cylinder hole that is arranged in cylinder block 40 central authorities is provided with the eccentric part 31 of eccentric shaft 30, the external cylindrical surface of eccentric part 31 is provided with rolling rotor, when eccentric part 31 carries out the circular movement rotation with eccentric shaft 30 in cylinder-bore, the rolling rotor compression enters the gaseous coolant in the cylinder block 40, also be provided with in the cylinder block and separate height, the dividing plate (not shown) of low pressure area refrigerant is on the cylinder block 40, be fixed with the upper bearing 51 and the lower bearing 52 that are used for blanket gas cylinder body end face and support eccentric shaft 30 rotations on the lower end surface respectively.

In addition, the side of airtight casing 10 is provided with sucking pipe 60, and sucking pipe 60 can make refrigerant enter in the pressing chamber 41 of compressor cylinder block 40; The drain tap (not shown) is installed on the upper-end surface of upper bearing 51, and this drain tap can be discharged into the pressing chamber 41 of the gaseous coolant after the compression from cylinder block 40 in the baffler 80, is discharged in the airtight casing 10 from baffler 80 again; The top of airtight casing 10 is provided with outlet pipe 70, and outlet pipe 70 can enter the gaseous coolant in the airtight casing 10 circulatory system of refrigerant.

Working procedure to above-mentioned existing rotary compressor is illustrated below: after the rotary compressor energising starts, rotor 22 in the airtight casing 10 begins rotation, drive eccentric shaft 30 and rolling rotor and also begin rotation, beginning is compressed in cylinder block 40 and is entered the refrigerant of cylinder block 40, when the refrigerant in the pressing chamber 41 reaches the certain pressure value, the drain tap that is installed in upper bearing 51 upper-end surfaces is opened, high-pressure gaseous refrigerant after overcompression enters baffler by exhaust valve, pore through baffler enters in the airtight casing 10 again, enters the circulatory system of refrigerant then through the outlet pipe 70 at airtight casing 10 tops.When the pressure of the gaseous coolant in the pressing chamber 41 descended, the drain tap of upper bearing 51 upper-end surfaces was closed, and prevented that the high-pressure gaseous refrigerant from refluxing, and at this moment compressor is in the state that sucks the low pressure gaseous coolant.

Above-mentioned rotary compressor in the course of the work, it is the periodically pulsing air-flow that the drain tap of upper bearing 51 upper-end surfaces is discharged air-flow, this air-flow has the very big impact force and the variation of pressure.

During rotary compressor work, the switching that reaches drain tap of flowing of high-pressure gaseous refrigerant all can cause very strong impact noise, and this impact noise has very wide frequency domain, is the main noise source of rotary compressor.As shown in Figures 2 and 3, in order to reduce the influence of this impact noise, the shaft bearing plate of upper bearing 51 is provided with baffler 80, and baffler 80 is a double layer construction, is made up of internal layer baffler 81 and outer baffler 82; The shape of outer baffler 82 is identical with the shape of internal layer baffler 81 to be five lobe shapes, and internal layer baffler 81 is provided with exhaust port 92, and outer baffler 82 is provided with exhaust port 94 and exhaust port 95; Internal layer baffler 81 is installed on the shaft bearing plate of upper bearing 51 by bolt respectively with outer baffler 82.

The shortcoming of above-mentioned existing rotary compressor is: as shown in Figure 4 and Figure 5, for easy for installation, cooperating between outer baffler 82 center holes 93 and the upper bearing 51 is Spielpassung, so cause the high-pressure gaseous refrigerant to leak from this gap location.Because part high pressure refrigerant from the leakage of above-mentioned gap location, has weakened the effect of the reduction noise of baffler to a certain extent; In addition, because the width in the gap between outer baffler 82 center holes 93 and the upper bearing 51 is inhomogeneous, some gap, position is less, and swiftly flowing pressurized gas refrigerant can produce the noise of high frequency when less clearance is leaked.

Summary of the invention

Technical problem to be solved by this invention is, overcomes the shortcoming of above-mentioned existing rotary compressor, and a kind of upper bearing of the rotary compressor that can prevent the high-pressure gaseous coolant leakage effectively and the linkage structure between the baffler center hole are provided.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: being connected between rotary compressor of the present invention middle and upper part bearing and the baffler center hole comprises: upper bearing and baffler; Described baffler is arranged on the shaft bearing plate of upper bearing; Described baffler is a double layer construction, comprises respectively by bolt being installed in internal layer baffler and outer baffler on the shaft bearing plate of upper bearing, and the central position of internal layer baffler and outer baffler is formed with a center hole respectively; Described upper bearing forms along its excircle to be had a platform, outer baffler center hole to be enclosed within on the upper bearing and makes outer baffler be pressed on this platform.

The center hole of described internal layer baffler is enclosed within on the upper bearing, and formation closely cooperates between the bearing wall of the upper bearing below the above-mentioned platform.

The invention has the beneficial effects as follows: simple in structure, effect is remarkable, has avoided the high-pressure gaseous refrigerant to let out from the upper bearing of compressor and the connection part between the baffler center hole, greatly reduces the noise that compressor produces.

Description of drawings

Fig. 1 is the sectional arrangement drawing of existing rotary compressor;

Fig. 2 is the structural representation of the internal layer baffler of existing rotary compressor;

Fig. 3 is the structural representation of the outer baffler of existing rotary compressor;

Fig. 4 is the linkage structure schematic representation between existing rotary compressor middle and upper part bearing and the baffler center hole;

Fig. 5 is the enlarged view of A portion among Fig. 4;

Fig. 6 is the upper bearing of rotary compressor of the present invention and the linkage structure schematic representation between the baffler center hole;

Fig. 7 is the enlarged view of B portion among Fig. 6.

Among the figure:

51: upper bearing; 51a: platform

81: the internal layer baffler; 82: outer baffler

Embodiment

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

Internal layer baffler 81 in the present embodiment is identical with structure shown in Figure 3 with Fig. 2 respectively with the structure of outer baffler 82.

As Fig. 2, Fig. 3, Fig. 6 and shown in Figure 7, the linkage structure between present embodiment rotary compressor middle and upper part bearing and the baffler center hole comprises: upper bearing 51 and baffler 80; Described baffler 80 is arranged on the shaft bearing plate of upper bearing 51; Described baffler 80 is a double layer construction, comprise respectively by bolt being installed in internal layer baffler 81 and outer baffler 82 on the shaft bearing plate of upper bearing 51, the central position of internal layer baffler 81 and outer baffler 82 is formed with a center hole 91 and 93 respectively; Described upper bearing 51 forms along its excircle to be had a platform 51a, outer baffler center hole 93 to be enclosed within on the upper bearing 51 and makes outer baffler 82 be pressed on the platform 51a.

The center hole 91 of described internal layer baffler 81 is enclosed within on the upper bearing 51, and formation closely cooperates between the bearing wall of the upper bearing below the platform 51a 51.

Effect to the linkage structure between present embodiment rotary compressor middle and upper part bearing and the baffler center hole is illustrated below: the compressor energising starts and begins to produce the high-pressure gaseous refrigerant, after the high-pressure gaseous refrigerant enters baffler, at first enter internal layer baffler 81, closely cooperate owing to form between the bearing wall of the upper bearing 51 that the center hole 91 of internal layer baffler 81 and platform 51a are following, be not easy to take place the leakage phenomenon of high pressure refrigerant between the two; After the high-pressure gaseous refrigerant enters outer baffler 82, because outer baffler center hole 93 is enclosed within on the upper bearing 51 and make outer baffler 82 be pressed on the platform 51a, thereby make outer baffler center hole 93 sealed, leakage phenomenon can not take place in the high-pressure gaseous refrigerant.Therefore, can avoid because the high-pressure gaseous refrigerant leaks and the noise that produces from the center hole 93 of the center hole 91 of internal layer baffler 81 and outer baffler, thereby the overall noise of compressor is reduced greatly.

Claims

1. the linkage structure between the upper bearing of a rotary compressor and the baffler center hole comprises: upper bearing and baffler; Described baffler is arranged on the shaft bearing plate of upper bearing; Described baffler is a double layer construction, comprises respectively by bolt being installed in internal layer baffler and outer baffler on the shaft bearing plate of upper bearing, and the central position of internal layer baffler and outer baffler is formed with a center hole respectively; It is characterized in that: described upper bearing (51) forms along its excircle to be had a platform (51a), outer baffler center hole (93) to be enclosed within upper bearing (51) to go up and make outer baffler (82) be pressed on the platform (51a).

2. the linkage structure between the upper bearing of rotary compressor according to claim 1 and the baffler center hole, it is characterized in that: the center hole 91 of described internal layer baffler 81 is enclosed within on the upper bearing 51, and formation closely cooperates between the bearing wall of the upper bearing below the platform 51a 51.