CN1072316C

CN1072316C - Rotary compressor

Info

Publication number: CN1072316C
Application number: CN96120120A
Authority: CN
Inventors: 尹泳
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 1995-10-09
Filing date: 1996-10-08
Publication date: 2001-10-03
Anticipated expiration: 2016-10-08
Also published as: JP2937895B2; CN1153259A; KR970021759A; JPH09112462A

Abstract

To prevent generation of vibration and a noise by imbalanced eccentric motion by providing a rotary means to rotate in a cylinder and an outside roller having a dividing means to divide an internal space into a compression chamber and a suction chamber, and a constituting the rotary means and the outside roller so as to make rotation on the respective centers. When a rotary shaft 16 rotates in an eccentric position in a cylinder 1, an outside roller 12 rotates, and compresses refrigerant gas by reducing the volume of a compression chamber. When the shaft 16 rotates and reaches a specific turning angle, a common port 15 of the outside roller 12 coincides with a delivery port 10a of the cylinder 1, and high temperature and high pressure refrigerant gas in the compression chamber is discharged through ports 15 and 10a. Then, when the common port 15 coincides with a suction port 11a of the cylinder 1, low temperature and low pressure refrigerant gas is sucked in a suction chamber through the ports 11a and 15. At this time, since the rotary shaft 16 and the outside roller 12 make rotation on the respective centers, vibration and a noise by imbalanced mass are prevented.

Description

Rotary compressor

The present invention relates to rotary compressor, particularly can reduce noise, reduce the rotary compressor of compression loss simultaneously again.

Rotary compressor in the past as depicted in figs. 1 and 2, form by following each parts: columnar cylinder 1, be arranged on the slotted hole 8 on the outer wall of above-mentioned cylinder 1, the axle 3 that in above-mentioned cylinder 1, rotates, the eccentric roller 2 of rotation and revolution owing to the rotation of axle, allow refrigerant gas flow into the intakeport 11 that goes in the induction chamber 6 in the cylinder 1, the relief opening 10 that allows in the pressing chamber 7 in above-mentioned cylinder 1 gas stream through overcompression come out, reciprocating in slotted hole 8 by means of the rotation of above-mentioned eccentric roller 2, the blade 9 that pressing chamber 7 and induction chamber 6 are separated, and the outlet valve (not shown) of the above-mentioned relief opening 10 of switch.

Label the 4, the 5th supports master/supplementary bearing of above-mentioned 3, and the 13rd, rotor, the 14th, stator.

This rotary compressor in the past, when its eccentric roller 2 because the rotation of axle 3 and when doing rotation and revolution with respect to cylinder, from the position of some angle of swing, compression is in the gas in the pressing chamber, in compression process, the volume of induction chamber 6 increases, refrigerant gas is inhaled into by intakeport 11, and when eccentric roller is rotated further, the pressure of refrigerant gas in pressing chamber is during greater than authorized pressure, just discharge by relief opening 10, so repeatedly running.During this period, blade 9 closely contacts with the external diameter of eccentric roller, and is reciprocating in slotted hole 8.

, this rotary compressor before because eccentric roller makes eccentric motion, can produce vibration because of the imbalance of quality, sends very big noise, exists the overcompression loss and the problem of expansion-loss again in the outlet valve.That is, so that keep the sealing of outlet valve, make outlet valve be higher than the overcompression loss of opening under the state of authorized pressure and producing, and the gas that a part will discharge expands and the expansion-loss again of generation in pressing chamber on specific rotational position.

The object of the present invention is to provide a kind of rotary compressor, this compressor can also prevent overcompression loss that outlet valve causes and expansion-loss again, thereby improve its performance when reducing the noise produce owing to eccentric motion.

For achieving the above object, rotary compressor of the present invention is characterised in that to have following each parts: columnar cylinder; Have the groove that forms along radial direction, and in above-mentioned cylinder, make the eccentric rotating device of eccentric rotary; The outside at above-mentioned eccentric rotating device, can be by means of the rotation of eccentric rotating device, the rotation of work and cylinder coaxial line, and have in the above-mentioned groove of insertion, the inner space of above-mentioned eccentric rotating device is separated into the outside roller of the separating device of pressing chamber and induction chamber; Above-mentioned eccentric rotating device and outside roller are that spinning motion is carried out at the center with the axis of itself separately.

Below, describe embodiments of the invention in detail with reference to accompanying drawing.In the accompanying drawing:

Fig. 1 is the profile diagram of rotary compressor in the past;

Fig. 2 is the cross-section profile of the compression member of rotary compressor in the past;

Fig. 3 is the profile diagram according to rotary compressor of the present invention;

Fig. 4 is the cross-section profile according to the compression member of rotary compressor of the present invention;

Fig. 5 is the explanatory drawing according to the compression process of rotary compressor of the present invention.

Fig. 3 and Fig. 4 represent the structure according to rotary compressor of the present invention, its main composition is same as the prior art, but it has the running shaft 16 that rotates with the roller that rotates and makes outside roller 12 with the rotation of cylinder coaxial line in the outside of axle by means of above-mentioned rotation in cylinder 1.On above-mentioned axle 16, form the groove 16a that extends along radial direction, on said external roller 12, then form the blade-section 12a that inserts in the above-mentioned groove.Inner space between above-mentioned axle 16 and the outside roller 12 is divided into pressing chamber 18 and induction chamber 17 (see figure 5)s by above-mentioned blade-section.On the outer wall of cylinder 1, formed rectilinear intakeport 11a and L shaped relief opening 10a, on said external roller 12, run through a common port 15, this common port can be communicated with intakeport along with the difference of the rotation angle of above-mentioned axle.

Below, according to Fig. 3, Fig. 4 and Fig. 5, the course of action of rotary compressor of the present invention is described.

When the above-mentioned running shaft 16 that becomes one with roller rotated in cylinder 1, outside roller 12 just carried out the rotation with the cylinder coaxial line, the volume of pressing chamber 18 is reduced, compression refrigerant gas.When axle 16 is rotated further, when arriving certain rotation angle, the common port 15 that is located on the outside roller 12 is aimed at L shaped relief opening 10a in being located at cylinder, and the High Temperature High Pressure refrigerant gas in the pressing chamber 18 are by common port 15 and relief opening 10a discharge.When axle 16 was rotated further, the common port 15 on the outside roller 12 was aimed at intakeport 11a on the cylinder again, so the refrigerant gas of low-temp low-pressure is just by in intakeport 11a and the common port inhale chambers 17 15.

When doing above-mentioned motion, above-mentioned running shaft 16 and the outside roller 12 that rotates with roller owing to be that spinning motion is made at the center with axis own all separately, can prevent because of the uneven vibrating noise that produces of weight.In addition, owing to saved the valve of discharging, the loss of excess compression and expansion-loss have again been exempted through the refrigerant gas of overcompression.

As mentioned above, according to the present invention, because axle and outside roller only carry out spinning motion, the vibration and the noise that produce owing to unbalanced eccentric motion have been reduced, and because without outlet valve, the loss of excess compression and the loss of expanding again be can prevent, thereby the performance and the efficient of compressor improved.

Claims

1. rotary compressor is characterized in that it has following each parts:

Columnar cylinder;

Eccentric rotating device, this eccentric rotating device is made eccentric rotary in above-mentioned cylinder, and has the groove that forms along radial direction;

Outside roller, this outside roller is in the outside of above-mentioned eccentric rotating device, can be by means of the rotation of the rotation work and the cylinder coaxial line of eccentric rotating device, and outside roller has the separating device that inserts in the above-mentioned groove, and described separating device is separated into pressing chamber and induction chamber with the inner space of above-mentioned eccentric rotating device;

Above-mentioned eccentric rotating device and outside roller are that spinning motion is carried out at the center with the axis of itself separately.

2. rotary compressor as claimed in claim 1 is characterized in that, above-mentioned eccentric rotating device is on the eccentric position in the said external roller, the running shaft that rotates with roller.

3. rotary compressor as claimed in claim 1 is characterized in that, above-mentioned separating device is to insert in the above-mentioned groove, the inner space is divided into the blade-section of pressing chamber and induction chamber.

4. rotary compressor as claimed in claim 1 is characterized in that,

On the said external roller, form the common port that connects;

On above-mentioned cylinder, form intakeport and relief opening;

When above-mentioned running shaft arrived certain angle of swing, above-mentioned common port was communicated with relief opening, discharged the refrigerant gas through overcompression, and then, common port is communicated with intakeport, sucked refrigerant gas.