CN1510296A

CN1510296A - Device for decreasing rotary compressor lubricant oil loss discharge

Info

Publication number: CN1510296A
Application number: CNA021586594A
Authority: CN
Inventors: 权五涉
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-12-25
Filing date: 2002-12-25
Publication date: 2004-07-07
Anticipated expiration: 2022-12-25
Also published as: CN100375847C

Abstract

A unit to decrease the exhausted machine oil for rotary compressor, which has the casing containing a certain quantity of machine oil and with sucking and exhaust tubes, the motor unit with stator and rotor for generating drive force, the rolling ring on the rotary shaft, and oil separating part arranged on exhaust tube for separating exhaust gas from oil. Said oil separating part is inserted in casing and has a cut-off part at its inserted end. A gas channel is formed on the side wall where the oil separating part is inserted. When the inlet of exhaust tube is cut off, said gas channel can prevent the oil from being exhausted with the gas.

Description

Reduce the device of rotary compressor oil discharge capacity

Technical field

The present invention relates to the invention of a kind of rotary compressor aspect.Further say so and be provided with the device of the relevant minimizing rotary compressor oil discharge capacity of oil separator in the ingress of discharge tube.

Figure viewed from behind technology

Under the ordinary circumstance, the rotary compressor that is applicable to air-conditioning etc. be with running shaft that motor combines on off-centre be combined with press part and roll ring, rolling ring carries out linear motion in circular cylinder, suck refrigerant and compress and discharge.

Tradition rotary compressor structure is as suggested in Fig. 1, and it is to be made of following structure: be provided with suction pipe SP and discharge tube DP, and the inside that is filled with the shell 1 of certain gauging is equipped with the stator 2 and the rotor 3 of motor; And be pressed into running shaft 4 at the center of its rotor 3; Below running shaft 4, be provided with the press part that absorbs compression refrigerant.

Press part is made of following structure: the circular cylinder 5 that is fixed on the inner peripheral surface of shell 1 and connects with suction pipe sp; At the upper bearing 6A and the lower bearing 6B that combine closely and in the bi-side of cylinder 5, be through with running shaft 4; With running shaft 4 is the center, and that carries out in cylinder 5 simultaneously that off-centre rotatablely moves rolls ring 7; Carry out tangential motion with rolling ring 7 outer circumferential faces, 7 carry out carrying out when line rotatablely moves straight line motion rolling ring, and cylinder 5 is divided into the baffle plate (not shown) that sucks space and compression volume.

Inside at running shaft 4 is formed with oil duct 4a by axle direction, and, the blade (not shown) that the oil of shell 1 inner bottom part is up taken out is installed in the lower end of oil duct 4a.

In the drawing, the symbol 6a that does not describe represents tap hole, 8 expression drain tap assembly bodies, and 9 expression mufflers, A represents liquid container.

The traditional rotary compressor that is made of said structure carries out following running.

Connect power supply on stator 2, rotor 3 is rotated in the inside of stator 2, and simultaneously, running shaft 4 also can be rotated together, so just makes to roll ring 7 and carrying out off-centre in cylinder 5 inside and rotatablely move.Along with the off-centre of rolling ring 7 rotatablely moves, refrigerant is sucked into the suction space of cylinder 5, last till and be compressed to till certain pressure, when the compression volume pressure one of cylinder 5 surpasses critical pressure and exceeds the moment that pressure in the shell 1 becomes high pressure, the expulsion valve 9 that is arranged on the upper bearing 6A is opened, and pressurized gas is discharged to the inside of shell 1 from compression volume.The gas that is discharged from is moved upward through the slit between shell 1 and the stator 2 or by the slit between stator 2 and the rotor 3, and by discharge tube DP, discharges to refrigerating circulation system.

At this moment, the oil that riddles shell 1 inside is subjected to the influence of the blade (not shown) of running shaft 4 and oil duct 4a to be drawn onto that the upper end is injected again comes out, thereby when playing lubricated each position motive position, the effect of cool motors, and then flow to the bottom of shell 1 again.

But above-mentioned traditional rotary compressor will be mixed together with the gas of discharging by scattered a part of oil, and can together discharge with the gas of discharging by discharge tube DP.By oil process refrigerating circulation system in the pressure grow of discharge tube DP, remain in the below or the crooked position of refrigerant pipe like this with the common discharge of refrigerant.Thereby, because the oil mass that is discharged from is arranged, thus cause the oil mass in the shell 1 to reduce gradually, toward the also corresponding minimizing of each motive position fuel feeding, cause each motive position oil generation for want of dry wear, make the lost of life of each component.

Summary of the invention

Technical problem to be solved by this invention is, the device that provides oil that a kind of minimizing sheds from the running shaft branch to discharge with the minimizing rotary compressor oil of discharging the amount that gas ejects by discharge tube together.

The technical solution adopted in the present invention is: a kind of device that reduces rotary compressor oil discharge capacity is to be provided with suction pipe and discharge tube, to be formed with stator and rotor in the enclosure that is filled with certain gauging, thereby produces the motor part of driving force; Be combined with on the running shaft that together rotates with the rotor of motor part and roll the circulation layer parts; When running shaft rotates, be rotated in cylinder interior, with oily inspiration, compression, in the compressor of discharging again, discharge tube is provided with and will discharges the oil separation part that gas and oil content leave, it inserts the inside that is combined in shell by certain degree of depth, and the end of its inserting side is provided with the cut-out parts, is formed with gas channel on the side wall surface of inserting side.

Device according to minimizing rotary compressor oil discharge capacity of the present invention, be in the inlet that cuts off outlet pipe, be formed with gas channel at side wall surface, the phenomenon that the gas of when reducing driven compressor the oil of necessity and then being discharged is together discharged, and, in the long-time running of compressor, lubricant oil is evenly supplied with by said structure, improved the stability and the reliability of compressor.

Description of drawings

Fig. 1 is the vertical end view drawing of existing rotary compressor;

Fig. 2 is the vertical end view drawing of rotary compressor of the present invention;

Fig. 3 and Fig. 4 be minimizing rotary compressor of the present invention oil discharge capacity device structural representation and show that it installs the terminal sectional drawing at main position;

Fig. 5 is the vertical end view drawing based on another embodiment of the device of minimizing rotary compressor oil discharge capacity of the present invention.

Wherein:

1: shell 2: stator 3: rotor 4: running shaft 5: cylinder

6a: tap hole 6A: upper bearing 6B: lower bearing 7: roll ring

8: drain tap assembly body 9: expulsion valve 10: oily discharge portion

11: the first cut-out plates 12: gas channel cuts off plate at 13: the second

14: guard A: liquid container SP: suction pipe DP: discharge tube

Embodiment

Below, in conjunction with the accompanying drawings, the device of minimizing rotary compressor of the present invention oil discharge capacity is elaborated.

As suggested in scheming, of the present invention possess have the rotary compressor that reduces oily discharge capacity device to include: be provided with suction pipe SP and discharge tube DP, in the inner motor part that forms stator 2 and rotor 3 thereby produce driving force of the shell 1 that is being filled with certain gauging; Be combined with the component that roll ring 7 on the running shaft 4 that together rotates with the rotor of motor part, when running shaft 4 rotations, be rotated, with oily inspiration, compress, again the compressor section of discharging to the inside of shell 1 in cylinder interior; Be arranged on the discharge tube DP, and will discharge the oil separation part 10 that gas and oil content leave.

Oil separation part 10 is made of following structure as suggested in Fig. 3 and 4: the inlet of stifled discharge tube DP, and separating oil and pressurized gas first cut off plate 11; The inlet sidewall that is located on the discharge tube DP of shell 1 inside connects and is connected to form, and when urgent (the fierce discharge constantly), only discharges the gas channel 12 of pressurized gas; Be arranged on the below of gas channel 12, and form with the expansion of frustoconical shape, in order to block the second cut-out plate 13 that the oil that contains in the gas is discharged to gas channel 12 to the compressor section direction.

It is integrated formation that the first segment plate 11 and second cuts off plate 13.But according to circumstances different, first cuts off plate 11 or second, and to cut off plate 13 be integrated formation with discharge tube DP, it then is not integrated formation that the second remaining segment plate 13 or first cuts off plate 11, but by after assemble.Also or first cut off plate 11 and second to cut off plate 13 be integrated formation with discharge tube DP together.

Gas channel 12 has respectively formed a gas channel 12 respectively in the left and right sides of discharge tube DP as shown in Figure 3.But as required, can all form a gas channel respectively at left-right and front-back, also can be not according to putting in order especially, a plurality of gas channels can form according to the circumferencial direction variation.

And gas channel 12 is as suggested in Fig. 5, within it on the side face, in conjunction with netted guard 14.Thereby can cut off oil more effectively and discharge by gas channel 12.

In the drawing,, do not carry out further symbol description to the identical part of prior art.In the drawing, the symbol 6a that does not describe represents tap hole, 8 expression drain tap assembly bodies, and 9 expression mufflers, A represents liquid container.

The working principle of the device of above-mentioned minimizing rotary compressor oil discharge capacity is as follows.

Introduce power supply to motor part, running shaft 4 is rotated together with rotor 3, the ring 7 that rolls that is combined on the eccentric part of running shaft 4 carries out off-centre in the confined space the inside of cylinder 5 and rotatablely moves, and refrigerant is drawn into sucks the inside, space, push away to the compression sky gradually then, when compression volume is compressed to a certain degree, the moment that the pressure of compression volume surpasses shell 1 internal pressure begins, pressurized gas is discharged from shell 1, the pressurized gas of discharging is discharged to the freezing loop device the inside of revolving by discharge tube DP, is inhaled into into again.

At this moment, may contain the oil of sending forth out from running shaft 4 from cylinder 5 interior pressurized gas the insides of discharging.But, blocks the inlet of discharge tube DP because being cut off plate 11 by first, and second cutting off plate 13 and block of being formed with frustoconical type shape around it will touch first and cut off plate 11 and second and cut off plate 13 and separate with pressurized gas so be blended in oil among the pressurized gas.And then, the separated oil of opening will flow into again in the shell 1, and pressurized gas then be discharged to discharge tube DP by the gas channel 12 that is arranged on the sidewall by the outer surface of the second cut-out plate 13.

Even pass through aforesaid operations, by still containing micro oil in the pressurized gas of gas channel 12, but this micro oil is arranged on the guard 14 on the gas channel 12, and is most of diluted, thereby has only near the pressurized gas of pure state and will discharge to discharge tube DP by gas channel 12.

Therefore, cut off plate and second and cut off the method for plate to cutting into first, be formed with gas channel, reduce the oil that in pressurized gas, contains and be discharged in the refrigerating circulation system by outlet pipe at left and right directions at the upper and lower of the exhaust travel direction of pressurized gas.

Claims

1. a device that reduces rotary compressor oil discharge capacity is being provided with suction pipe (SP) and discharge tube (DP), is formed with stator (2) and rotor (3) being filled with the shell of certain gauging (1) inside, thereby the motor part of generation driving force; Be combined with on the running shaft (4) that together rotates with the rotor (3) of motor part and roll circulation layer parts (7); When running shaft (4) rotates, be rotated in cylinder interior, with oily inspiration, compression, in the compressor of discharging again, it is characterized in that: discharge tube (DP) is provided with and will discharges the oil separation part (10) that gas and oil content leave, it inserts the inside that is combined in shell (1) by certain degree of depth, and the end of its inserting side is provided with and cuts off parts (11,13), is formed with gas channel (12) on the side wall surface of inserting side.

2. the device of minimizing rotary compressor oil discharge capacity according to claim 1 is characterized in that: it is to go up the structure that broadens gradually from bottom to the compressor section that is positioned at gas channel (12) at discharge tube (DP) that described oil cuts off parts (11,13).

3. the device of minimizing rotary compressor oil discharge capacity according to claim 2 is characterized in that: it is integrally formed with discharge tube (DP) that described oil cuts off parts (11,13).

4. the device of minimizing rotary compressor oil discharge capacity according to claim 1 and 2 is characterized in that: locate to be provided with the netted guard (14) of oil at gas channel (12).