CN1455094A

CN1455094A - Crankshaft oil-way guide Structure of closed compressor

Info

Publication number: CN1455094A
Application number: CN 02117041
Authority: CN
Inventors: 崔喆洛
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-04-29
Filing date: 2002-04-29
Publication date: 2003-11-12
Anticipated expiration: 2022-04-29
Also published as: CN1233932C

Abstract

The crankshaft oil circuit guide structure of closed ocmpressor for making the interior of compressor obtain lubrication and cooling includes a crankshaft fastened to rotor and formed into one body together with it, the upper end of said crankshaft is equipped with an eccentric shaft, and the oil circuit formed in the interior of the crankshaft from top to bottom is communicated with the oil circuit in the eccentric shaft, the oil circuit in the crankshaft in inclined, and the axis of the oil circuit is deviated from rotation axis of the crankshaft in a certain angle alpha. The rotation axis of the crankshaft retains a certain inclination from axis of oil circuit of the crankshaft, and the inclination direction of toward the eccentric shaft oil circuit direction of discharging engine oil.

Description

The crankshaft oil-way guide Structure of hermetic type compressor

Technical field

What the present invention relates to is compressor, particularly be the invention of the crankshaft oil-way guide Structure aspect of the compressor inside hermetic type compressor that obtains lubricated and cooling.

Background technique

Fig. 1 is the internal structure of the hermetic type compressor of prior art connecting rod mode, and its structure is: seal container 1 is made of upper container 1t and bottom container 1b, and its inside is confined space; Framework 30 is arranged in the confined space 1, and spring 2s is supported on framework 30 inside of seal container 1.Bent axle 5 connects the center that is arranged on framework 30, and bent axle 5 fastens as one with rotor 50.Be fixed with stator 3 on the framework 30, the electro permanent magnetic of stator 3 and (following will the explanation) rotor 50 interacts bent axle 5 is rotated.

There is eccentric shaft 5b the upper end of bent axle 5, and eccentric shaft 5b is positioned at the rotating center eccentric position of bent axle 5.The opposite direction of eccentric shaft 5b is provided with equilibrium block 48.There is fuel feeding core 52 lower end of

bent axle

5, and 52 effects of fuel feeding core are that the machine oil L of bottom container 1b bottom surface can be risen along the oil circuit 5a on the bent axle 5 apace.The rotating center of oil circuit 5a center and bent axle 5 is on same axle center.

The cylinder 6 that forms as one with it is arranged on framework 30, and the inside of cylinder 6 is pressing chamber 6 ｀.On pressing chamber 6 ｀ piston 7 is arranged, piston 7 is connected by the eccentric shaft 5b of connecting rod 54 with bent axle 5.The bent axle joint 54a of eccentric shaft 5b and connecting rod 54 is connected, and piston 7 is connected by the piston joint 54b of wrist pin 7 ｀ and connecting rod 54.

The front end of cylinder 6 has valve assembly body 9, the medium that 9 controls of valve assembly body flow in pressing chamber 6 ｀, discharge.Loam cake 10 is installed on the valve assembly body 9, absorbing silencer 11 is housed on the loam cake 10.Absorbing silencer 11 is connected with pressing chamber 6 ｀ that are positioned at cylinder 6 inside by valve assembly body 9.In the drawing, unaccounted symbol 12 is suction pipes, suction pipe 12 with driving fluid be sent to seal container 1 in; The 13rd, discharge tube, discharge tube 13 is discharged the driving fluid of compression to the outside of compressor.

Fig. 2 is bent axle 5 internal oil passages structural representations among Fig. 1.Below in conjunction with Fig. 2, the process that makes machine oil L be drawn into top by the oil circuit 5a in bent axle 5 inside is elaborated.

Interact by the electro permanent magnetic of rotor 50, rotor 50 is rotated, thereby also rotation thereupon of bent axle 5 sends rotating force to piston 7 by connecting rod 54 again, makes piston 7 carry out the straight line back and forth movement with stator 3.

Because the rotation of bent axle 5 makes fuel feeding core 52 suck machine oil L.Be inhaled into the L shaped one-tenth of the machine oil oil level as shown in Figure 2 on top by the rotation of bent axle 5.That is to say that the centrifugal force that the rotation by bent axle 5 produces makes whole isopiestics P form the U word shape, machine oil L is risen along the inwall rotation of oil circuit 5a.

The oil level of the machine oil L that forms in the rotation of bent axle 5 learns, the rotation centerline SL of bent axle and the center line of above-mentioned oil circuit 5a are on same axis, so rotation centerline SL is formed centrally the oil level of the symmetrical machine oil L in both sides in being.Can make to be positioned at the machine oil L that rotation centerline SL goes up the right side, send forth to the top of eccentric shaft 5 by the inside of eccentric shaft 5b.

But above-mentioned prior art has following shortcoming: promptly, because structure is limit, oil circuit 5a is under-supply to oil level.In order to address the above problem, if enlarge oil circuit 5a internal diameter, with improving fuel delivery, but the internal diameter of oil circuit 5a enlarges, and can make the external diameter of bent axle 5 become big, if do not enlarge the external diameter of bent axle 5, its thickness attenuation just must occur, problems such as reduction in strength.

Summary of the invention

The objective of the invention is to overcome above-mentioned technical problem, a kind of crankshaft oil-way guide Structure of hermetic type compressor of the oil mass that relatively improves bent axle supply machine oil is provided.

The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of crankshaft oil-way guide Structure of hermetic type compressor, include the bent axle that fastens as one with rotor, there is eccentric shaft upper end at bent axle, the oil circuit that the interior above-below direction of bent axle forms communicates with the oil circuit in the eccentric shaft, oil circuit in the bent axle tilts, and the rotation centerline of oil circuit center line and bent axle departs from several angle α.

The invention has the beneficial effects as follows: because the center line of the oil circuit of the rotation centerline of bent axle and bent axle keeps certain inclination, true dip direction is towards the eccentric shaft oil circuit direction of discharging machine oil, so can supply more relatively oil level on the bent axle of same diameter.

Description of drawings

Fig. 1 is the internal structure sectional view of existing hermetic type compressor;

Fig. 2 is a bent axle internal oil passages structural representation among Fig. 1;

Fig. 3 is the A-A sectional drawing of Fig. 2;

The sectional view of Fig. 4 crankshaft oil-way guide Structure of the present invention;

Fig. 5 points out out the B-B sectional drawing of Fig. 4;

Fig. 6 is the coordinate diagram of the performance characteristics of the embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are described in detail: the present invention is the crankshaft oil-way guide Structure of hermetic type compressor, its structure includes: the bent axle 40 that fastens as one with rotor 50, in the upper end of bent axle 40 eccentric shaft 45 is arranged, the oil circuit 42 that bent axle 40 interior above-below directions form communicates with the oil circuit in the eccentric shaft, and oil circuit 42 center lines in the bent axle 40 and the rotation centerline of bent axle 40 depart from several angle α.

In the through hole 31 of the framework 30 of hermetic type compressor, bent axle 40 is housed; Axle sleeve is 32 to prolong to the bottom of framework 30 along through hole 31 and to form, and axle sleeve 32 supports bent axles 40.

Bent axle 40 is contained in the through hole 31 of framework 30.Bent axle 40 is made of rotary shaft 41, eccentric shaft 45 and equilibrium block 48.

Rotary shaft 41 connects and is contained in the framework 30, and with rotor 50 fastening combinations, there is the oil circuit 42 that machine oil is drawn into top from the bottom its inside.The rotation centerline SL of rotary shaft 41 and the center line P of oil circuit 42 depart from several angle α and are formed obliquely above-mentioned oil circuit 42.

Though the inclined degree of above-mentioned oil circuit 42 is the bigger the better, preferably according to the decision of problems such as the external diameter of rotary shaft 41, thickness.In addition, oil circuit 42 center lines in the bent axle 40 tilt to oil circuit 47 directions of eccentric shaft 45 inside, running shaft upper end

The upper end of bent axle 40 is provided with above-mentioned eccentric shaft 45, and this eccentric shaft 45 links with connecting rod 54, eccentric shaft 45 with the position of the rotation centerline SL off-centre of rotary shaft 41 on.Eccentric shaft oil circuit 47 connects the inside that is formed on eccentric shaft 45, and eccentric shaft oil circuit 47 is connected with oil circuit 42.

The upper end of bent axle 40 is provided with equilibrium block 48, and the effect of equilibrium block 48 is that the off-centre that can remedy because of eccentric shaft 45 causes the rotation of bent axle 40 unbalanced.In addition, gas discharge hole 49 is arranged on equilibrium block 48, gas discharge hole 49 is communicated with the outside of oil circuit 42 and bent axle 40, and its effect is to get rid of the gas that flow in the oil circuit 42 at the driving initial stage of compressor.

On the rotary shaft 41 of bent axle 40 rotor 50 is housed, rotor 50 rotates with rotary shaft 41 one of bent axle 40.The lower end of rotor 50 is provided with fuel feeding core 52, and fuel feeding core 52 is connected with oil circuit 42.In addition, linking on the eccentric shaft 45 of bent axle 40 has connecting rod 54, the effect of connecting rod 54 to be, rotatablely moving of bent axle 40 is converted to the straight line back and forth movement of piston.

Below in conjunction with accompanying drawing, an embodiment of crankshaft oil-way guide Structure with hermetic type compressor of the present invention is described in detail:

At first, Driven Compressor makes rotor 50 rotations, and the bent axle 40 that fastens as one with rotor 50 begins rotation.The rotating force that bent axle 40 rotations produce sends above-mentioned connecting rod 54 to by eccentric shaft 45, converts the straight line back and forth movement of piston to through connecting rod 54.By bent axle 40 rotation, make fuel feeding core 52 that machine oil is drawn into top with rotor 50.That is to say,, the inside of oil circuit 42 is formed for the symmetrical isopiestics P of rotation centerline SL by the rotation of bent axle 40.But for rotation centerline SL, oil circuit 42 keeps several angle α to be formed slopely.As shown in Figure 5, the thickness of the machine oil L that forms on oil circuit 42 walls is towards the bigger thickness of true dip direction formation of oil circuit 42.That is to say, more relatively towards the said engine oil L that the true dip direction of oil circuit 42 is supplied.Particularly, owing to oil circuit 42 is formed obliquely towards eccentric shaft oil circuit 47, so more relatively to the machine oil L of eccentric shaft oil circuit 47 supplies.

As mentioned above, reason to the more relatively machine oil L of eccentric shaft oil circuit 47 supplies is, above-mentioned isopiestics P is formed centrally in rotation centerline SL being, the mobile space that forms of oil circuit 42 inner engine oil L that keeps certain inclination, more more relatively in the amount of the machine oil L on the oil circuit 42 right side walls than the machine oil L amount that floats on the wall of left side, so fuel delivery increases relatively.The big more fuel delivery of the inclination of oil circuit 42 is just many more.But, the inclined degree that determine above-mentioned oil circuit 42 according to the diameter and the thickness of rotary shaft 41.

Claims

1. the crankshaft oil-way guide Structure of a hermetic type compressor, include the bent axle (40) that fastens as one with rotor (50), in the upper end of bent axle (40) eccentric shaft (45) is arranged, the oil circuit (42) that the interior above-below direction of bent axle (40) forms communicates with the oil circuit in the eccentric shaft (45), it is characterized in that the oil circuit (42) in the bent axle (40) tilts, the rotation centerline of oil circuit (42) center line and bent axle (40) departs from several angle α.

2. according to the oil circuit guide structure described in the claim 1, it is characterized in that oil circuit (42) center line in the bent axle (40) tilts to oil circuit (47) direction of running shaft upper end eccentric shaft (45).