CN203463283U - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN203463283U CN203463283U CN201320531402.5U CN201320531402U CN203463283U CN 203463283 U CN203463283 U CN 203463283U CN 201320531402 U CN201320531402 U CN 201320531402U CN 203463283 U CN203463283 U CN 203463283U
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- thrust
- bearing part
- scroll compressor
- thrust bearing
- crankshaft
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 150000004767 nitrides Chemical class 0.000 claims description 19
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 42
- 238000005121 nitriding Methods 0.000 description 24
- 239000003507 refrigerant Substances 0.000 description 15
- 150000003839 salts Chemical class 0.000 description 15
- 238000003825 pressing Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000005507 spraying Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a scroll compressor which can be used for restraining the rise of the manufacturing cost and can run under a severe thrust sliding condition. A scroll compressor (10) is provided with a shell (20), a lower bracket (60), a compression mechanism (30), a crankshaft (50), a rotary side thrust bearing component (70) and a thrust plate (80), wherein the lower bracket is fixed on the shell; the compression mechanism is configured in the shell, and is provided with a fixed scroll piece (31) and a movable scroll piece (32); the crankshaft is connected with the movable scroll piece; the rotary side thrust bearing component is a steel component subjected to nitrogen treatment, and is arranged on the crankshaft; the thrust plate is fixed on the lower bracket, and is provided with a fixed side thrust surface (80a); the fixed side thrust surface (80a) is opposite to a rotary side thrust surface (71a) of the rotary side thrust bearing component, and is in sliding contact with the rotary side thrust surface; the thrust plate is used for supporting the crankshaft in an axial direction.
Description
Technical field
The utility model relates to scroll compressor.
Background technique
In scroll compressor, by thrust receiving portion, support in the axial direction the axial thrust load of crank.For example,, at patent documentation 1(TOHKEMY 2004-124780 communique) in the example of the axial thrust load of utilizing thrust plate supporting spindle is disclosed.At patent documentation 1(TOHKEMY 2004-124780 communique) in adopted without the carbon steel quenching.
[prior art document]
[patent documentation]
Patent documentation 1: TOHKEMY 2004-124780 communique
Model utility content
The problem that model utility will solve
Yet, from energy-conservation and angle high performance, require scroll compressor to turn round than the rotating speed of existing more wide range.In addition, scroll compressor is according to purposes and need to adopt diversified refrigeration agent, but sometimes because refrigeration agent different volumes ability is lower, has to make compressing mechanism to maximize in order to obtain the ability needing.And because used refrigerator oil is different, oil viscosity is lower sometimes, is difficult to expect the fluid lubrication of slide part.
Therefore, refrigeration agent due to operating condition and use, it is harsh that the sliding condition of crankshaft and thrust receiving portion becomes, angle from wearability and the sliding of crankshaft, if the material of the such crankshaft using employing patent documentation 1(TOHKEMY 2004-124780 communique), cannot realize the running of scroll compressor.
Consider such scheme: for the scroll compressor in the situation that the sliding condition harshness of crankshaft and thrust receiving portion also suitably turns round, whole crankshaft is implemented to surface treatment, the wearability of crankshaft and sliding are improved.But the application artificer's discovery, is carrying out in surface-treated situation whole crankshaft, work efficiency is poor, causes manufacture cost to rise.
Problem of the present utility model is, a kind of scroll compressor is provided, and it suppresses manufacture cost rising, even and if also can turn round under harsh sliding condition.
For solving the technological scheme of problem
The scroll compressor of first aspect of the present utility model possesses shell, support, compressing mechanism, crankshaft, rotation side-thrust bearing part and fixed side thrust bearing part.Support is fixed on shell.Compressing mechanism configuration in the enclosure, has fixed scroll and movable scroll.Crankshaft links with movable scroll.Rotation side-thrust bearing part is the steel that via nitride is processed.Rotation side-thrust bearing part is installed on crankshaft.Fixed side thrust bearing part is fixed on support and has fixed side thrust face, the rotation side-thrust of this fixed side thrust face and rotation side-thrust bearing part in the face of put and with the sliding contact of rotation side-thrust face, fixed side thrust bearing part supports crankshaft in the axial direction.
The rotation side-thrust bearing part of the steel that here, via nitride is processed is installed on crankshaft.Rotate the rotation side-thrust face of side-thrust bearing part and support in the axial direction the fixed side thrust face sliding contact of the fixed side thrust bearing part of crankshaft.Because rotation side-thrust bearing part is the steel that via nitride is processed, the wearability and the sliding that therefore rotate side-thrust bearing part improve, even if can realize the scroll compressor that also can turn round under harsh thrust sliding condition.In addition,, due to for being not to whole crankshaft but only having carried out the steel of nitriding treatment to being installed on the rotation side-thrust bearing part of crankshaft, therefore can suppress manufacture cost and rise.
The scroll compressor of second aspect of the present utility model is the scroll compressor of first aspect, and fixed side thrust bearing part is the steel that via nitride is processed.
Here, fixed side thrust bearing part is also the steel that via nitride is processed.Also can improve wearability and the sliding of fixed side thrust bearing part, even if can realize the scroll compressor that also can turn round under harsh thrust sliding condition.
The scroll compressor of the third aspect of the present utility model is the scroll compressor of first aspect or second aspect, and rotation side-thrust bearing part is to be formed by spheroidal graphite cast iron or Al-Cr-Mo steel.
Here, owing to rotating the excellent in wear resistance of the material of side-thrust bearing part, even if therefore can realize the scroll compressor that also can turn round under harsh thrust sliding condition.
The scroll compressor of fourth aspect of the present utility model is first aspect to the scroll compressor of the either side in the third aspect, and fixed side thrust bearing part is formed by Al-Cr-Mo steel or Cr-Mo steel.
Thus, even if can realize the scroll compressor that also can turn round under harsh thrust sliding condition.
The scroll compressor of the 5th aspect of the present utility model is first aspect to the scroll compressor of the either side in fourth aspect, and fixed side thrust face is smooth.
Here, because fixed side thrust face is smooth, so fixed side thrust bearing part improves with the sliding of rotation side-thrust bearing part.
The scroll compressor of the 6th aspect of the present utility model is first aspect to the scroll compressor of the either side in fourth aspect, and is formed with oil groove at fixed side thrust face.
Here, oil is easily provided between fixed side thrust face and drawer at movable side thrust face, and fixed side thrust face and drawer at movable side thrust face are by fluid lubrication.Therefore, fixed side thrust bearing part improves with the sliding of rotation side-thrust bearing part.
The scroll compressor of the 7th aspect of the present utility model is the scroll compressor of the either side in first aspect to the six aspects, and rotation side-thrust bearing part is pressed in crankshaft and end movable scroll opposition side.
Here, because rotation side-thrust bearing part is the parts that are pressed in the bottom of crankshaft, the situation that is therefore the steel of via nitride processing with whole crankshaft is compared, and can suppress manufacture cost and rise.
The scroll compressor of eight aspect of the present utility model is the scroll compressor of the either side in first aspect to the seven aspects, and described scroll compressor also possesses oil suction portion.In the bottom of shell, be formed with store oil space, the oil for lubricating rotary side-thrust face and fixed side thrust face is accumulated in described store oil space.At crankshaft, be formed with oily stream, described oily stream is along extending axially and supply oil flow.Oil suction portion store oil space and oily stream is provided and provide oil to oily stream, and oil suction portion forms as one with rotation side-thrust bearing part.
Here, rotation side-thrust bearing part and oil suction portion form as one, and can cut down number of components.Consequently, can suppress manufacture cost, even and if can realize the scroll compressor that also can turn round under harsh thrust sliding condition.
The scroll compressor of the 9th aspect of the present utility model is the scroll compressor of the either side in first aspect to the seven aspects, and described scroll compressor also possesses oil suction portion.In the bottom of shell, be formed with store oil space, the oil for lubricating rotary side-thrust face and fixed side thrust face is accumulated in described store oil space.At crankshaft, be formed with oily stream, described oily stream extends axially and supplies oil flow along described.Oil suction portion store oil space and oily stream is provided and provide oil to oily stream, and oil suction portion forms and rotates the split of side-thrust bearing part.
Here, because oil suction portion is split with rotation side-thrust bearing part, therefore can make to rotate the miniaturization of side-thrust bearing part.Therefore, can easily process rotation side-thrust bearing part.
Model utility effect
According to scroll compressor of the present utility model, the rotation side-thrust bearing part of the steel that via nitride is processed is installed on crankshaft.Rotate the rotation side-thrust face of side-thrust bearing part and support in the axial direction the fixed side thrust face sliding contact of the fixed side thrust bearing part of crankshaft.Because rotation side-thrust bearing part is the steel that via nitride is processed, the wearability and the sliding that therefore rotate side-thrust bearing part improve, even if can realize the scroll compressor that also can turn round under harsh thrust sliding condition.In addition,, due to for being not to whole crankshaft but only having carried out the steel of nitriding treatment to being installed on the rotation side-thrust bearing part of crankshaft, therefore can suppress manufacture cost and rise.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of scroll compressor of the present utility model.
Fig. 2 is the stereogram of rotation side-thrust bearing part of the scroll compressor of Fig. 1.
Fig. 3 is the planimetric map of thrust plate of the scroll compressor of Fig. 1.
Fig. 4 is the combination of material of the part of the rotation side-thrust bearing part that uses in scroll compressor in the past of the combination and being equivalent to of the material of rotation side-thrust bearing part about using in the scroll compressor in Fig. 1 and thrust plate and thrust plate, and the figure of the result that wearability is compared is shown.
Fig. 5 is the planimetric map of the thrust plate of variation A.
Fig. 6 shows near the longitudinal section of the scroll compressor rotation side-thrust bearing part of variation B and the slide part of thrust plate.
Fig. 7 shows near the longitudinal section of the scroll compressor rotation side-thrust bearing part of variation C and the slide part of thrust plate.
Fig. 8 is the planimetric map from the rotation side-thrust bearing part of beneath variation C.
Label declaration
10: scroll compressor;
20: shell;
25: store oil space;
30: compressing mechanism;
31: fixed scroll;
32: movable scroll;
50: crankshaft;
53: oily stream;
60: lower bracket (support);
70,170,270: rotation side-thrust bearing part;
71a, 171a, 270a: rotation side-thrust face;
73,173,290: oil suction portion;
80,81: thrust plate (fixed side thrust bearing part);
80a, 81a: fixed side thrust face;
L: oil.
Embodiment
With reference to accompanying drawing, the scroll compressor of a mode of execution of the present utility model is described.In addition, following mode of execution can suitably change in the scope that does not depart from purport of the present utility model.
(1) whole summary
Scroll compressor shown in Fig. 1 10 together forms refrigerant circuit with vaporizer, condenser and expansion mechanism etc., for to compressing at the mobile refrigeration agent of this refrigerant circuit.
In addition, in the following description, claim that the direction of the arrow U in Fig. 1 is upper, claim that the direction contrary with arrow U is under.
(2) describe in detail
(2-1) shell
In shell 20, accommodate constitution equipment and the component parts of the scroll compressor 10 that comprises compressing mechanism 30, motor 40, crankshaft 50, lower bracket 60, lower bearing portion 65, rotation side-thrust bearing part 70 and thrust plate 80.In the bottom of shell 20, be formed with the store oil space 25 that comprises the rotation side-thrust face 71a of rotation side-thrust bearing part 70 and the fixed side thrust face 80a of thrust plate 80, the oily L for the sliding parts of lubricating vortex air-compressor 10 is accumulated in described store oil space 25.
On the top of shell 20, the mode of the side that connects upper cover 22 of usining is provided with the suction pipe 26 for the gas refrigerant of the compressed object as compressing mechanism 30 is sucked.One end of suction pipe 26 is connected with the fixed scroll 31 of compressing mechanism 30 described later, and suction pipe 26 is communicated with the pressing chamber Sc of compressing mechanism 30 described later.The gas refrigerant of the low pressure before compression flow in suction pipe 26.
Intermediate portion at the cylinder part 21 of shell 20 is provided with spraying pipe 27, and this spraying pipe 27 passes through for the gas refrigerant being ejected into outside shell 20.More specifically, spraying pipe 27 is configured to: the end of shell 20 inner sides of spraying pipe 27 is projected into the high-pressure space S1 of the below of the support 33 that is formed at compressing mechanism 30.By compressing mechanism 30, the gas refrigerant of compressed high pressure flows in spraying pipe 27.
(2-2) compressing mechanism
As shown in Figure 1, compressing mechanism 30 mainly has fixed scroll 31, movable scroll 32 and support 33.Between fixed scroll 31 and movable scroll 32, be formed with the pressing chamber Sc for compressed refrigerant.
(2-2-1) fixed scroll
As shown in Figure 1, fixed scroll 31 has from the outstanding Vorticose fixed side scrollwork 31a of the lower surface of fixed scroll 31 with around the outer edge 31b of fixed side scrollwork 31a.
In the substantial middle of the upper surface of fixed scroll 31, along thickness direction, connect fixed scroll 31 and be formed with the ejiction opening 31c of the non-circular shape being communicated with pressing chamber Sc described later.In pressing chamber Sc, compressed gas refrigerant sprays upward from ejiction opening 31c, by fixed scroll 31 and the not shown coolant channel that is formed at support 33 described later, flows into high-pressure space S1.
(2-2-2) movable scroll
As shown in Figure 1, movable scroll 32 has from the outstanding Vorticose drawer at movable side scrollwork 32a of the upper surface of movable scroll 32 and gives prominence to and form boss part 32b cylindraceous from the lower surface of movable scroll 32.
(2-2-3) support
As shown in Figure 1, in the central upper of support 33, be formed with the recess 33a of circular while overlooking.In the inner side of recess 33a, accommodate the eccentric part boss part 32b 51 links, movable scroll 32 with crankshaft 50.
In the bottom of recess 33a, be formed with the bearing portion 33b of circular.The main shaft 52 of crankshaft 50 inserts into perforation bearing portion 33b.Bearing portion 33b rotates supporting spindle 52 axles freely.
(2-3) motor
Motor 40 drive compression mechanisms 30.As shown in Figure 1, motor 40 has: the stator 41 of ring-type roughly, and it is fixed on the internal face of the cylinder part 21 of shell 20; And rotor 42, it separates small gap (air gap channel) and rotates the inner side that is housed inside freely stator 41.
(2-4) crankshaft
As shown in Figure 1, crankshaft 50 passes to movable scroll 32 by the driving force of motor 40.Crankshaft 50 is configured to extend upward at upper and lower along the axle center of the cylinder part 21 of shell 20, and the movable scroll 32 of the rotor of motor 40 42 and compressing mechanism 30 is linked up.
(2-5) lower bracket
As shown in Figure 1, lower bracket 60 is configured in the below of motor 40.The peripheral part of lower bracket 60 is fixed on shell 20.Lower bearing portion 65 and thrust plate 80 are fixed on lower bracket 60.
(2-6) lower bearing portion
(2-7) rotation side-thrust bearing part
As depicted in figs. 1 and 2, rotation side-thrust bearing part 70 is thrust receiving portions 71, is pressed into the parts that portion 72 and oil suction portion 73 form as one.Rotation side-thrust bearing part 70 is installed on the lower end of crankshaft 50.
Rotation side-thrust bearing part 70 is made by the FCD material (spheroidal graphite cast iron) of salt Bath Nitriding Treatment.In addition, salt Bath Nitriding Treatment is an example of nitridation treatment method, also can to rotation side-thrust bearing part 70, implement nitriding treatment by gas nitriding processing, gas nitrocarburizing processing, oxynitriding processing, sulphonitriding processing etc.In addition, the material of rotation side-thrust bearing part 70 is examples, also can adopt for example material of SACM material (Al-Cr-Mo cast steel) conduct rotation side-thrust bearing part 70.
Thrust receiving portion 71 forms cylindric, along extending axially of crankshaft 50.The lower end of thrust receiving portion 71 has rotation side-thrust face 71a.By rotation side-thrust bearing part 70, together rotate the fixed side thrust face 80a sliding contact of rotation side-thrust face 71a and thrust plate 80 with crankshaft 50.Rotation side-thrust face 71a is level and smooth plane.In addition, the underpart that comprises the thrust receiving portion 71 of rotation side-thrust face 71a is submerged in the oily L in store oil space 25.Therefore, rotation side-thrust face 71a has easily been provided oily L all the time, can expect to rotate side-thrust face 71a and fixed side thrust face 80a by fluid lubrication.
Be pressed into portion 72 and form cylindricly, extend the axial top from the upper end of thrust receiving portion 71 to crankshaft 50.The external diameter that is pressed into portion 72 forms the external diameter that is less than thrust receiving portion 71.Be pressed in the opening of lower end side that portion 72 is pressed into the oily stream 53 that is formed at crankshaft 50.Rotation side-thrust bearing part 70 links with crankshaft 50 by being pressed into portion 72.
(2-8) thrust plate
(3) action specification of scroll compressor
With reference to Fig. 1, the action of scroll compressor 10 is described.
When motor 40 is driven, rotor 42 rotations, the crankshaft 50 linking with rotor 42 rotates.By crankshaft 50, rotate, movable scroll 32 is driven.Utilize the function of partition ring 35 to make movable scroll 32 not carry out certainly transferring to revolve round the sun with respect to fixed scroll 31.
The volume of the pressing chamber Sc of compressing mechanism 30 periodically changes along with the revolution of movable scroll 32.When the volume of pressing chamber Sc increases, the gas refrigerant of low pressure is provided for pressing chamber Sc by suction pipe 26.More specifically, when the volume of the pressing chamber Sc of peripheral side increases, the gas refrigerant of the low pressure providing from suction pipe 26 is provided to the pressing chamber Sc of peripheral side.On the other hand, when the volume reducing of pressing chamber Sc, in pressing chamber Sc, gas refrigerant is compressed, and finally becomes the gas refrigerant of high pressure.The gas refrigerant of high pressure is from being positioned near the ejiction opening 31c ejection center of upper surface of fixed scroll 31.Then, the gas refrigerant of high pressure flow in high-pressure space S1 by fixed scroll 31 and the not shown coolant channel that is formed at support 33 described later.The finally ejection from spraying pipe 27 of the gas refrigerant of high pressure.
(4) sliding and the wearability of rotation side-thrust bearing part and thrust plate
Below, about the combination of the material of the rotation side-thrust bearing part 70 that uses in the scroll compressor 10 in present embodiment and thrust plate 80 be equivalent to the combination of material of the part of the rotation side-thrust bearing part 70 that uses and thrust plate 80 in scroll compressor in the past, the result that sliding and wearability are compared is described.
In addition, as the material of scroll compressor in the past, suppose that rotation side (in scroll compressor in the past normally crankshaft) adopts the FCD material without nitriding treatment, imagination fixed side adopts carburizing and quenching steel.
In the scroll compressor 10 of present embodiment, as described above, use has been implemented the FCD material of salt Bath Nitriding Treatment as the material of rotation side (rotation side-thrust bearing part 70), uses and has implemented the SACM material of salt Bath Nitriding Treatment as the material of fixed side (thrust plate 80).
Following comparative result is the experiment based on following: about two above-mentioned combinations, the fixed side test parts that the rotation side test parts that forms of material by rotation side is formed with respect to the material by fixed side is approaching certain condition lower slider of actual sliding condition, and friction factor and the rotation side test parts reducing after the slip scheduled period and the wear extent (weight) of fixed side test parts are carried out to actual measurement.
About sliding, according to the combination of the material of the scroll compressor 10 of present embodiment, compare with the combination of the material using in scroll compressor in the past, friction factor can be eased down to below half.
Fig. 4 is about the combination of the rotation side-thrust bearing part 70 of use in scroll compressor 10 and the material of thrust plate 80 (rotation side: the FCD material that via nitride is processed, the SACM material that via nitride is processed) and be equivalent to combination (the rotation side: the FCD material of non-nitriding treatment, fixed side: the figure that the result that wearability is compared is shown carburizing and quenching steel) of material of the part of the rotation side-thrust bearing part that uses and thrust plate in scroll compressor in the past fixed side:.More specifically, about two combinations, show and make fixed side test parts that the rotation side test parts that forms of material by rotation side forms with respect to the material by fixed side and in the situation that approach certain condition lower slider of actual sliding condition wear extent (weight) during certain, that rotate side test parts and fixed side test parts.In the frame in left side, be that the bar chart in left side shows the wear extent of rotation side test parts about the result of the combination of the material of scroll compressor in the past, the bar chart on right side shows the wear extent of fixed side test parts.On the other hand, in the frame on right side, be the result of combination of the material of scroll compressor 10, the bar chart in left side shows the wear extent of rotation side test parts 70, and the bar chart on right side shows the wear extent of fixed side test parts 80.
About wearability, as shown in Figure 4, according to the combination of the material of the scroll compressor 10 of present embodiment (in the frame on the right side in Fig. 4), compare with the combination (in the frame in the left side in Fig. 4) of the material using in scroll compressor in the past, can make especially the wear extent of rotating side test parts reduce to below 1/10th.That is, by the FCD material that via nitride is processed, be used for rotating side-thrust bearing part 70, thereby can improve significantly wearability.
In addition, even if only rotate the steel that side-thrust bearing part 70 adopts via nitride to process, sliding and the wearability of rotation side-thrust bearing part 70 also can improve, but more preferably, the steel that thrust plate 80 also adopts via nitride to process.
(5) feature
（5-1）
In the scroll compressor 10 of present embodiment, possess: shell 20; Lower bracket 60; Compressing mechanism 30; Crankshaft 50; The rotation side-thrust bearing part 70 of the steel that via nitride is processed; And thrust plate 80.Lower bracket 60 is fixed on shell 20.Compressing mechanism 30 is configured in shell 20, has fixed scroll 31 and movable scroll 32.Crankshaft 50 links with movable scroll 32.Rotation side-thrust bearing part 70 is installed on crankshaft 50.Thrust plate 80 is fixed on lower bracket 60 and has fixed side thrust face 80a, the rotation side-thrust face 71a of this fixed side thrust face 80a and rotation side-thrust bearing part 70 opposed and with rotation side-thrust face 71a sliding contact, thrust plate 80 supports crankshaft 50 in the axial direction.
Here, due to the steel that rotation side-thrust bearing part 70 is processed for via nitride, the wearability and the sliding that therefore rotate side-thrust bearing part 70 improve, even if can realize the scroll compressor 10 that also can turn round under harsh thrust sliding condition.
In addition,, due to for being not to whole crankshaft 50 but only having carried out the steel of nitriding treatment to being installed on the rotation side-thrust bearing part 70 of crankshaft 50, therefore can suppress manufacture cost and rise.
For example, in the present embodiment, owing to only rotation side-thrust bearing part 70 being carried out to salt Bath Nitriding Treatment, therefore, compare with the situation that whole crankshaft 50 is carried out to salt Bath Nitriding Treatment, can once to many rotation side-thrust bearing part 70, carry out salt Bath Nitriding Treatment.That is, in the situation that only rotation side-thrust bearing part 70 being carried out to salt Bath Nitriding Treatment, compare with the situation that whole crankshaft 50 is carried out to salt Bath Nitriding Treatment, can improve operating efficiency and realize the cost of scroll compressor 10.
In addition, in the situation that whole crankshaft 50 is carried out to salt Bath Nitriding Treatment, before carrying out salt Bath Nitriding Treatment, need to for example, to not wishing that the part of carrying out the part of salt Bath Nitriding Treatment, being configured in bearing portion 33b and lower bearing portion 65 covers processing, if but only rotation side-thrust bearing part 70 is carried out the words of salt Bath Nitriding Treatment, such problem can be do not produced, workload can be suppressed.
（5-2）
In the scroll compressor 10 of present embodiment, thrust plate 80 is steels that via nitride is processed.
Therefore, can improve wearability and the sliding of thrust plate 80, even if can realize the scroll compressor 10 that also can turn round under harsh thrust sliding condition.
（5-3）
In the scroll compressor 10 of present embodiment, rotation side-thrust bearing part 70 is FCD material or SACM material.
Here, owing to rotating the excellent in wear resistance of the material of side-thrust bearing part 70, even if therefore can realize the scroll compressor 10 that also can turn round under harsh thrust sliding condition.
（5-4）
In the scroll compressor 10 of present embodiment, thrust plate 80 is SACM material or SCM material.
Thus, even if can realize the scroll compressor 10 that also can turn round under harsh thrust sliding condition.
（5-5）
In the scroll compressor 10 of present embodiment, fixed side thrust face 80a is smooth.
Therefore, thrust plate 80 improves with the sliding of rotation side-thrust bearing part 70.
（5-6）
In the scroll compressor 10 of present embodiment, rotation side-thrust bearing part 70 is pressed in crankshaft 50 and ends movable scroll 32 opposition sides.
Here, because rotation side-thrust bearing part 70 is the parts that are pressed in the end of crankshaft 50, therefore compare for the situation of the steel of via nitride processing with whole crankshaft 50, can suppress manufacture cost and rise.
（5-7）
In the scroll compressor 10 of present embodiment, also possesses oil suction portion 73.In the bottom of shell 20, be formed with store oil space 25, the oily L for lubricating rotary side-thrust face 71a and fixed side thrust face 80a is accumulated in described store oil space 25.At crankshaft 50, be formed with oily stream 53, described oily stream 53 flows along extending axially also fuel feeding L.Oil suction portion 73 store oil space 25 and oily stream 53 is provided and provide oily L to oily stream 53, and oil suction portion 73 forms as one with rotation side-thrust bearing part 70.
Here, rotation side-thrust bearing part 70 forms as one with oil suction portion 73, can cut down number of components.Consequently, can suppress manufacture cost, even and if can realize the scroll compressor 10 that also can turn round under harsh thrust sliding condition.
(6) variation
Below, modified embodiment of the present embodiment is shown.In addition, also can suitably combine a plurality of variation.
(6-1) variation A
In the above-described embodiment, thrust plate 80 has smooth fixed side thrust face 80a, but is not limited to this.Also can be for example thrust plate 81 as shown in Figure 5 like that, at fixed side thrust face 81a, form oil groove 81b.
Thus, oil is easily provided between fixed side thrust face 81a and rotation side-thrust face 71a, and fixed side thrust face 81a and rotation side-thrust face 71a are by fluid lubrication.Therefore, fixed side thrust face 81a improves with the sliding of rotation side-thrust face 71a, can realize the scroll compressor 10 that reliability is high.
(6-2) variation B
The shape of the rotation side-thrust bearing part 70 of above-mentioned mode of execution is not limited to the shape in Fig. 2, can be also the rotation side-thrust bearing part 170 that for example axial length of thrust receiving portion 171 is formed shortlyer as shown in Figure 6.Thus, the amount of used material can be suppressed, cost can be suppressed.
In addition, the drawer at movable side thrust face 171a of thrust receiving portion 171 is without being immersed in oily L, but from the viewpoint of the sliding of drawer at movable side thrust face 171a and fixed side thrust face 80a, preferably drawer at movable side thrust face 171a is immersed in oily L.
(6-3) variation C
In the above-described embodiment, oil suction portion 73 forms as one with rotation side-thrust bearing part 70, but is not limited to this, also can make as shown in Figure 7 oil suction portion 290 and rotation side-thrust bearing part 270 for parts independently.
Thus, can make to rotate 270 miniaturizations of side-thrust bearing part, can easily to rotation side-thrust bearing part 270, process.
In addition, as shown in Figure 7 and Figure 8, rotation side-thrust bearing part 270 is the cartridges with the bottom of the ring-type of forming.The lower surface of the bottom of rotation side-thrust bearing part 270 becomes the rotation side-thrust face 270a with the fixed side thrust face 80a sliding contact of thrust plate 80.In the through hole 270c of bottom that is formed at rotation side-thrust bearing part 270, be inserted with oil suction portion 290.
Not that rotation side-thrust bearing part 270 is pressed in the opening of lower end side that is formed at the oily stream 53 of crankshaft 50, but the lower end of main shaft 52 is pressed in the 270b of cylinder portion of rotation side-thrust bearing part 270, rotate thus side-thrust bearing part 270 and crankshaft 50 is fixed.
Utilizability in industry
The utility model is useful as the scroll compressor that can suppress manufacture cost rising and also can turn round under harsh sliding condition.
Claims (9)
1. a scroll compressor (10), is characterized in that,
Described scroll compressor possesses:
Shell (20);
Support (60), it is fixed on described shell;
Compressing mechanism (30), it is configured in described shell, has fixed scroll (31) and movable scroll (32);
Crankshaft (50), itself and described movable scroll link;
The rotation side-thrust bearing part (70,170,270) of the steel that via nitride is processed, it is installed on described crankshaft; And
Fixed side thrust bearing part (80,81), it is fixed on described support and has fixed side thrust face (80a, 81a), the rotation side-thrust face (71a, 171a, 271a) of this fixed side thrust face (80a, 81a) and described rotation side-thrust bearing part opposed and with the sliding contact of described rotation side-thrust face, described fixed side thrust bearing part supports described crankshaft in the axial direction.
2. scroll compressor according to claim 1, is characterized in that,
Described fixed side thrust bearing part is the steel that via nitride is processed.
3. scroll compressor according to claim 1 and 2, is characterized in that,
Described rotation side-thrust bearing part is formed by spheroidal graphite cast iron or Al-Cr-Mo steel.
4. scroll compressor according to claim 1 and 2, is characterized in that,
Described fixed side thrust bearing part is formed by Al-Cr-Mo steel or Cr-Mo steel.
5. scroll compressor according to claim 1 and 2, is characterized in that,
Described fixed side thrust face (80a) is smooth.
6. scroll compressor according to claim 1 and 2, is characterized in that,
At described fixed side thrust face (81a), be formed with oil groove.
7. scroll compressor according to claim 1 and 2, is characterized in that,
Described rotation side-thrust bearing part is pressed in described crankshaft and end described movable scroll opposition side.
8. scroll compressor according to claim 1 and 2, is characterized in that,
Described scroll compressor also possesses oil suction portion (73,173),
In the bottom of described shell, be formed with store oil space (25), the oil (L) for lubricated described rotation side-thrust face and described fixed side thrust face is accumulated in described store oil space,
At described crankshaft, be formed with oily stream (53), described oily stream extends axially and supplies described oil to flow through along described,
Described oil suction portion described store oil space and described oily stream is provided and provide described oil to described oily stream, and described oil suction portion and described rotation side-thrust bearing part (70,170) form as one.
9. scroll compressor according to claim 1 and 2, is characterized in that,
Described scroll compressor also possesses oil suction portion (290),
In the bottom of described shell, be formed with store oil space (25), the oil (L) for lubricated described rotation side-thrust face and described fixed side thrust face is accumulated in described store oil space,
At described crankshaft, be formed with oily stream (53), described oily stream extends axially and supplies described oil to flow through along described,
Described oil suction portion described store oil space and described oily stream is provided and provide described oil to described oily stream, described oil suction portion and described rotation side-thrust bearing part (270) split formation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012192554A JP2014047739A (en) | 2012-08-31 | 2012-08-31 | Scroll compressor |
| JP2012-192554 | 2012-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463283U true CN203463283U (en) | 2014-03-05 |
Family
ID=50175652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531402.5U Expired - Fee Related CN203463283U (en) | 2012-08-31 | 2013-08-29 | Scroll compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014047739A (en) |
| CN (1) | CN203463283U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763631A (en) * | 2015-04-02 | 2015-07-08 | 合肥通用机械研究院 | Vortex refrigeration compressor with sliding and rolling friction pair bent axle supporting structure |
| CN108361193A (en) * | 2017-01-27 | 2018-08-03 | 丹佛斯商用压缩机公司 | Screw compressor |
-
2012
- 2012-08-31 JP JP2012192554A patent/JP2014047739A/en active Pending
-
2013
- 2013-08-29 CN CN201320531402.5U patent/CN203463283U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763631A (en) * | 2015-04-02 | 2015-07-08 | 合肥通用机械研究院 | Vortex refrigeration compressor with sliding and rolling friction pair bent axle supporting structure |
| CN108361193A (en) * | 2017-01-27 | 2018-08-03 | 丹佛斯商用压缩机公司 | Screw compressor |
| US10746174B2 (en) | 2017-01-27 | 2020-08-18 | Danfoss Commercial Compressors | Scroll compressor with an orbital disc lubrication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014047739A (en) | 2014-03-17 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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