CN1665102A - Airtight compressor - Google Patents
Airtight compressor Download PDFInfo
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- CN1665102A CN1665102A CN 200510052892 CN200510052892A CN1665102A CN 1665102 A CN1665102 A CN 1665102A CN 200510052892 CN200510052892 CN 200510052892 CN 200510052892 A CN200510052892 A CN 200510052892A CN 1665102 A CN1665102 A CN 1665102A
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Abstract
The subject of this invention is to solve the following problem: when a rare earth magnet is used and the thickness of a magnetic-steel sheet laminate of a rotor is small, a weight increment in the rotor itself is small, and the inertia force in rotation is small, consequently fluctuation of the rotational load has a great effect. The enclosed type compressor is a rotary compressor mounted with a rare earth magnet motor used in a refrigeration circuit. A balance weight 5 is attached to the rotor 3b. In the rotor 3b, an inertia part 5a has a specified thickness so that the thickness of the magnetic-steel sheet laminate becomes equal to that of a rotor mounted with a ferrite magnet. The balance weight 5 has an inertia function of a non-magnetic body in which inertia-part mass is heavier than the mass of the balance-weight part. Thus, the weight of the rotor 3b itself becomes heavy to make the inertia force large, effect of rotation load fluctuation can be made small, performance is improved, and noise and vibration are reduced.
Description
Technical field
The present invention relates to the hermetic type compressor that is equipped with the rare earth magnet motor in a kind of refrigerating circuit that is used for air conditioner etc., especially, relate to the counterweight of the rotor that is arranged at motor part that is used for making the rotary system balance.
Background technology
In the past,, for example adopt following manner in order to make the rotary system balance of hermetic type compressor.
At top counterweight from rotor to the eccentric direction off-centre of eccentric part is installed on away from the end face of a side of compression mechanical part, rotor near the end face of a side of compression mechanical part on via distance piece install towards with the bottom counterweight of the eccentric direction opposition side off-centre of eccentric part, by inserting distance piece, because the bottom counterweight is away from the end face of rotor, even under the situation of the little top counterweight of quality, also can offset out-of-balance force and suppress vibration, the bending of rotating shaft when preventing high speed rotating simultaneously (with reference to patent documentation 1).
[patent documentation 1] spy opens 2002-213357 communique (the 4th page, Fig. 1)
The content of invention
But, the hermetic type compressor that is equipped with the rare earth magnet motor in being used for refrigerating circuit, in the rotor of motor part, use rare earth magnet, thereby compare the magnetic force grow with adopting ferromagnetic rotor, under the situation of the identical output of needs, can reduce the laminated thickness of electromagnetic steel plate.Therefore, can realize lightweight, miniaturization, the cost degradation of hermetic type compressor itself, simultaneously, help the degree of freedom of expansion instrument lift-launch property.
But under the situation of the motor that uses rare earth magnet, because the laminated thickness of electromagnetic steel plate reduces, so the weight of rotor self lightens, the inertia force during rotation reduces, thereby, be subjected to the influence of rotating load change very big.Therefore, produce decreased performance, noise, vibration increase such unfavorable condition.
Also be the same in the hermetic type compressor of patent documentation 1 record, under the situation that the electromagnetic steel plate laminated thickness that uses rare earth magnet, rotor reduces, because the distance piece of material light specific gravity, it is little that the weight of rotor self increases degree, inertia force during rotation reduces, thereby, there is the big problem of influence that is subjected to the rotating load change.
The present invention proposes in order to solve above-mentioned problem, and its objective is provides a kind of hermetic type compressor, by using rare earth magnet, making the magnet miniaturization, so that reduce cost, simultaneously, even the electromagnetic steel plate laminated thickness of rotor is little, can not be subjected to the very big influence of rotating load change yet.
In addition, the present invention also aims to provide a kind of hermetic type compressor, by using rare earth magnet, making the magnet miniaturization, so that reduce cost, simultaneously, even the electromagnetic steel plate laminated thickness of rotor is little, still can make vibration very little, can guarantee the reliability of bearing.
In addition, the present invention also aims to provide a kind of hermetic type compressor, by using rare earth magnet, making the magnet miniaturization, so that reduce cost, simultaneously, even the electromagnetic steel plate laminated thickness of rotor is little, still can make the flexural deformation of rotating shaft very little, not swing during rotation, thus bearing and Metal Contact can be prevented.
According to hermetic type compressor of the present invention, in closed container, accommodate the compression mechanical part and the motor part that connect by rotating shaft, and, in the rotor of motor part, use rare earth magnet, on the top of rotor and front is set is counterweight portion in the end of bottom, the end face side is the counterweight that has the inertia function of the nonmagnetic material of inertia portion, make the out-of-balance force static balance and the dynamic balancing that rotatablely move and produce owing to the eccentric part of compression mechanical part, and, the quality of rotor and have the summation of quality of inertia portion of the counterweight of inertia function, the definite quality that reduces more than or equal to the influence that makes the rotating load change.
Hermetic type compressor of the present invention, in the rotor of motor part, use rare earth magnet, on the top of rotor and front is set is that counterweight portion, end face side are the counterweight that has the inertia function of the nonmagnetic material of inertia portion in the end of bottom, make the out-of-balance force static balance and the dynamic balancing that rotatablely move and produce owing to the eccentric part of compression mechanical part, and, the summation of the quality of the inertia portion of the quality of aforementioned rotor and the aforementioned counterweight that has an inertia function, the definite quality that reduces more than or equal to the influence that makes the rotating load change; Whereby, can reduce cost by the miniaturization of magnet, simultaneously, because the Heavy Weight of the rotor of motor part and inertia portion, inertia force become big, so the influence of rotating load change reduces, can the obtained performance raising, the hermetic type compressor that reduces of noise and vibration.
Description of drawings
Fig. 1 is the cutaway view of the rotary compressor in the expression the invention process form 1.
Fig. 2 is the diagram of the rotary compressor balance when rotated in the explanation the invention process form 1.
Fig. 3 is the cutaway view of the rotary compressor in the expression the invention process form 2.
Fig. 4 is a key diagram of representing the state on the rotor 3b that the counterweight that has the inertia function 5 of nonmagnetic material is installed in the invention process form 3 with section.
Fig. 5 forms the diagram of the counterweight that has the inertia function by parts independently in the expression the invention process form 4.
Embodiment
Form of implementation 1
Fig. 1 is the cutaway view as the rotary compressor of hermetic type compressor in the expression the invention process form 1, and Fig. 2 is the diagram of this rotary compressor of explanation balance when rotated.
In Fig. 1, in closed container 1, accommodate the compression mechanical part 2 and the motor part 3 that couple together by rotating shaft 4.Compression mechanical part 2 comprises: be fixed on cylinder 2a in the closed container 1, be installed on piston 2e on the eccentric part 4a peripheral part of rotating shaft 4 in cylinder 2a, stop up upper head plate 2b, the bottom plate 2c etc. of the both ends of the surface of cylinder 2a.And motor part 3 comprises: be fixed on stator 3a in the closed container, surround stator 3a and be fixed on rotor 3b on the rotating shaft 4.
This rotary compressor, compression afterwards, is discharged to refrigerant compressed in the closed container 1 from the cold-producing medium that suction pipe 11 sucks in the discharge chambe of the 2d of cylinder chamber, is discharged to outside the machine from discharge pipe 12.
The rotor 3b of this motor part 3 is configured to: the magnet that rare earth magnet is inserted into stacked electromagnetic steel plate inserts in the hole, for the magnet that prevents to insert drops, form one-piece type counterweight with end plate what the two end faces of the rotor 3b of motor part 3 was set up nonmagnetic material.And, by rivet etc. they are riveted.Counterweight is set up in order to make the rotary system balance, but, under the situation of the motor that uses rare earth magnet, the degree that is necessary to reduce, set up than big counterweight under the situation of using ferromagnetic motor, to increase inertia force according to the electromagnetic steel plate laminated thickness.
In this form of implementation, in the counterweight that has the inertia function 5 of setting up nonmagnetic material up and down of rotor 3b.The counterweight that has the inertia function 5 of this nonmagnetic material is by the 5a of inertia portion and the upper end (situation on the rotor 3b) of the 5a of inertia portion or the 5b of the counterweight portion formation of lower end (situation under the rotor 3b) of rotor 3b end face side, the 5b of counterweight portion of upper end is with towards installing with the mode of the eccentric part 4a same side off-centre of rotating shaft 4, and the counterweight 5b of lower end is with towards installing with the mode of eccentric part 4a opposition side off-centre.And in up and down 5a of inertia portion and rotor 3b, the 5a of inertia portion reaches the thickness of regulation altogether up and down, so that form and the identical electromagnetic steel plate laminated thickness of the ferromagnetic rotor of lift-launch.In Fig. 1, thickness up and down equates.And then, the quality W1 of the 5a of inertia portion is bigger than the quality W2 of the 5b of counterweight portion, and (the total quality of) quality is more than the quality of regulation, for example more than the quality of carrying ferromagnetic rotor up and down together with the 5a of inertia portion that has the counterweight 5 of inertia function for the quality of rotor 3b.And, utilize rivet etc. that they are riveted.
The balance of rotary system is described by Fig. 2.
When rotating shaft 4 rotation and since the out-of-balance force F1 that the rotation of eccentric part 4a produces by about out-of-balance force F3, the F2 institute balance of the 5b of counterweight portion.That is, F1+F3=F2 realizes static balance.
And the upper head plate 2b that rotating shaft 4 is supported in the double as bearing goes up and is rotated.At this moment, be fulcrum with compressor center of gravity position, set by eccentric part 4a and the imbalance of counterweight 5b and power F1, the F2, the F3 that produce up and down, so that equalising torque.That is, represent from fulcrum to owing to uneven power F1, the F2 that produces, the distance of F3 F1 * L1+F2 * L2=F3 * L3, realization dynamic balancing (equalising torque) according to mode shown in Figure 2.
Like this, by realizing static balance and dynamic balancing, can offset the imbalance of eccentric part 4a, and, can offset the moment forces that rotating shaft 4 is done grind pestle formula motion (ス リ コ ギ ?Move), thereby, can obtain to vibrate little, as can to guarantee bearing reliability rotary compressor.
And then, as shown in Figure 1, set up the counterweight that has the inertia function 5 of nonmagnetic material at the two ends of rotor 3b, this counterweight 5 has regulation in the 5a of inertia portion thickness, so that form and the identical electromagnetic steel plate laminated thickness of the ferromagnetic rotor of lift-launch, and the quality W1 of the 5a of inertia portion is heavier than the quality W2 of the 5b of counterweight portion, and, the quality of rotor 3b and have the 5a of inertia portion (the total quality of) quality up and down together of the counterweight 5 of inertia function, at definite quality, for example carry more than the quality of ferromagnetic rotor, thereby it is heavy that the weight of rotor 3b self becomes, it is big that inertia force becomes, thereby can reduce owing to rotary load changes the influence that causes.
As described above, in up and down 5a of inertia portion and rotor 3b, the 5a of inertia portion forms the thickness of regulation altogether up and down, so that form and the identical electromagnetic steel plate laminated thickness of the ferromagnetic rotor of lift-launch, but the thickness of 5a of inertia portion and rotor 3b also can be littler than the electromagnetic steel plate laminated thickness that carries ferromagnetic rotor up and down.But,, need to increase the predetermined weight of the 5a of inertia portion up and down in order to improve inertia force.And L2, L3 reduce, and realize static balance and dynamic balancing.Can obtain same effect like this.
And, though in described in the above, the quality W1 of the 5a of inertia portion is bigger than the quality W2 of the 5b of counterweight portion, but, be not limited to this, as long as the quality that the quality of the quality W1 of the 5a of inertia portion and rotation lumps together more than the definite quality of the influence that can reduce to be caused by the rotating load change, for example carrying more than the quality of ferromagnetic rotor, then can obtain same effect.
Form of implementation 2
In form of implementation 1, by on rotor 3b, installing the counterweight that has the inertia function 5 of nonmagnetic material additional, increase inertia force, reduce because rotating load changes the influence that causes, and, realize static balance and dynamic balancing, so that improve performance, reduce noise and vibration, and in this form of implementation, shown in Figure 3 as the cutaway view of rotary compressor only set up on the lower end surface of rotor 3b and had inertia function counterweight 5.Promptly, in the rotary compressor that carries the rare earth magnet motor, only set up the counterweight that has the inertia function 5 of nonmagnetic material in the lower surface of rotor 3b, counterweight 5 has regulation in the 5a of inertia portion thickness, so that form and carry the identical electromagnetic steel plate laminated thickness of ferromagnetic rotor, the quality of the 5a of inertia portion weighs than the quality of the 5b of counterweight portion.At this, the 5a of inertia portion of the upper end of the rotor 3b of Fig. 1, with the 5a of inertia portion integrator on above-below direction of lower end surface, and, remove the 5b of counterweight portion on top.And the quality of rotor 3b and the total quality of quality of the 5a of inertia portion of counterweight 5 that has an inertia function are at definite quality, for example carry more than the quality of ferromagnetic rotor.And the upper end of rotor 3b forms according to the mode that rare earth magnet can not come off by means of end plate 9.Other is identical with form of implementation 1.
Like this, only set up the counterweight that has the inertia function 5 of nonmagnetic material in the lower end surface of rotor 3b, the thickness that the 5a of inertia portion has regulation, thereby make thickness identical with the electromagnetic steel plate laminated thickness that carries ferromagnetic rotor, the quality of the 5a of inertia portion is heavier than the quality of the 5b of counterweight portion, with the upper end of end plate 9 obstruction rotor 3b, whereby, can reduce the position of centre of gravity of closed compressor, reduce the size of incidental counterweight portion.And,, inertia force is increased by setting up the counterweight that has the inertia function 5 of nonmagnetic material.Thereby, can not be subjected to the influence that causes because of swing to reliability, can keep the balance of rotary system, can reduce cost.
The rotary compressor of this form of implementation, in Fig. 3, also can be in the upper end of rotor 3b with eccentric part 4a same side counterweight 5b is set.By only on the lower end surface of rotor 3b, setting up the counterweight that has the inertia function 5 of nonmagnetic material, the 5b of counterweight portion of bottom is near the fulcrum of the upper head plate of double as bearing, promptly, L2 shown in Figure 2 diminishes, compare with dynamically balanced form with above-mentioned static balance, the quality W2 of the top counterweight 5b of portion can reduce.Therefore, by realizing static balance and dynamic balancing, can reduce vibration, and, utilizing the counterweight that has the inertia function 5 of nonmagnetic material, inertia force can reduce because the influence that the rotating load change causes by increasing, and then, can prevent rotating shaft 4 bendings, prevent swing, can prevent because the forfeiture of the reliability that bearing and Metal Contact cause.
In addition, the amount of bow of rotating shaft 4, the distance of part that is acted on centrifugal force and the fulcrum of upper head plate 2b cube proportional, thereby the influence of the quality W2 of the top counterweight 5b of portion is big especially.
Form of implementation 3
The rotary compressor of this form of implementation is to change the shape of the counterweight that has the inertia function 5 that is installed in the nonmagnetic material on the rotor 3b lower end surface, the form of implementation of installation method with respect to form of implementation 2.
Fig. 4 is a key diagram of representing the state on the rotor 3b that the counterweight that has the inertia function 5 of nonmagnetic material is installed in section.Though rotating shaft 4 has been omitted, on the above-below direction of Fig. 4, rotor 3b is divided into the right and left, and, dispose the 5b of counterweight portion on the right, on the left side configuration non-magnetic spacer part 8.
As shown in Figure 4, the counterweight that has the inertia function 5 of setting up nonmagnetic material on rotor 4 (similarly, the total quality of the quality of the quality of rotor 3b and the 5a of inertia portion is more than the quality of regulation, for example more than the quality of carrying ferromagnetic rotor), counterweight 5 has regulation in the 5a of inertia portion thickness, so that form and the identical electromagnetic steel plate laminated thickness of the ferromagnetic rotor of lift-launch, the quality W1 of the 5a of inertia portion is heavier than the quality W2 of the 5b of counterweight portion, at this moment, eccentric part 4a opposition side lower end surface and rotating shaft 4 at rotor 4 is installed the counterweight 5b of portion, and, the distance piece 8 of nonmagnetic material being installed, the inertia 5a of portion is installed via them with the eccentric part 4a same side of rotating shaft 4.
By doing like this, the position of centre of gravity of closed compressor reduces, the size of the counterweight portion that can reduce to set up.And by setting up the counterweight that has the inertia function 5 of nonmagnetic material, inertia force increases.Therefore, can not be subjected to the influence that causes because of swing, can keep the balance of rotary system, can reduce cost reliability.
And, the refrigerant gas of be compressed the compression of portion of mechanism, discharging, be discharged to the flat shape side (counterweight that has the inertia function 5 sides of Fig. 4) of counterweight, therefore, suppressed to enclose rolling of the interior refrigerator oil of closed container, and, the oil that has improved the refrigerant gas of discharging separates effect, thereby, can reduce from the oily drag-out of closed container the performance when improving the device lift-launch to loading device.
Form of implementation 4
This form of implementation, as shown in Figure 5, for form of implementation 1～3, be attached to counterweight 5 on the rotor 3b of the rotary compressor that is equipped with the rare earth magnet motor, that have the inertia function, form by 5a of inertia portion and the 5b of counterweight portion, make up and be affixed on the rotor 3b as individual components.
Like this,, be attached to the counterweight that has the inertia function 5 on the rotor 3b, launch relatively,, can more easily tackle by only changing the 5b of counterweight portion with the series under the situation that the quality that makes eccentric part 4a changes by constituting with parts independently.
Claims (4)
1. a hermetic type compressor is characterized in that, accommodates the compression mechanical part (2) and the motor part (3) that are connected by rotating shaft (4) in closed container (1),
And, in the rotor of aforementioned motor part, use rare earth magnet,
On the top of aforementioned rotor and the end of bottom the counterweight that has the inertia function that front is counterweight portion, the aforementioned end face side nonmagnetic material that is inertia portion is set, make the out-of-balance force static balance and the dynamic balancing that rotatablely move and produce owing to the eccentric part of aforementioned compression mechanical part, and, the summation of the quality of the aforementioned inertia portion of the quality of aforementioned rotor and the aforementioned counterweight that has an inertia function, the definite quality that reduces more than or equal to the influence that makes the rotating load change.
2. hermetic type compressor as claimed in claim 1 is characterized in that, the aforementioned counterweight that has the inertia function only is arranged on the end face of bottom of aforementioned rotor, and the inertia portion of bottom and the inertia portion on top are integrated.
3. hermetic type compressor as claimed in claim 2, it is characterized in that, end in the bottom of aforementioned rotor, at opposition side aforementioned counterweight portion is set with the eccentric part of aforementioned rotating shaft, and, in same side nonmagnetic distance piece is set, aforementioned inertia portion is set via both with the eccentric part of aforementioned rotating shaft.
4. as any one described hermetic type compressor in the claim 1～3, it is characterized in that the aforementioned counterweight portion of the aforementioned counterweight that has an inertia function and aforementioned inertia portion are separate parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004060713A JP2005248843A (en) | 2004-03-04 | 2004-03-04 | Enclosed type compressor |
| JP2004060713 | 2004-03-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1665102A true CN1665102A (en) | 2005-09-07 |
| CN100336284C CN100336284C (en) | 2007-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100528920A Active CN100336284C (en) | 2004-03-04 | 2005-03-02 | Airtight compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005248843A (en) |
| CN (1) | CN100336284C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032188A (en) * | 2009-09-30 | 2011-04-27 | 三洋电机株式会社 | Rotary compressor and its manufacturing method |
| CN101482114B (en) * | 2008-01-09 | 2011-12-21 | 日立空调·家用电器株式会社 | Airtight electric compressor |
| CN102528374A (en) * | 2012-01-04 | 2012-07-04 | 西安加立方鼓风机有限公司 | On-site repairing method for SJ type air-intake sintering system |
| CN108631500A (en) * | 2017-03-15 | 2018-10-09 | 三菱电机(广州)压缩机有限公司 | Compressor and its rotor assembly |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146736A (en) * | 2005-11-28 | 2007-06-14 | Sanyo Electric Co Ltd | Rotary compressor |
| JP2015111012A (en) * | 2012-03-26 | 2015-06-18 | 東芝キヤリア株式会社 | Refrigeration cycle device |
| JP2013231442A (en) * | 2013-07-01 | 2013-11-14 | Mitsubishi Electric Corp | Hermetic compressor and refrigeration cycle apparatus including the hermetic compressor |
| JP6808312B2 (en) * | 2015-10-28 | 2021-01-06 | 三菱重工サーマルシステムズ株式会社 | Electric compressor |
| WO2020165962A1 (en) | 2019-02-13 | 2020-08-20 | 三菱電機株式会社 | Compressor and air conditioning device |
| JP2020148109A (en) * | 2019-03-12 | 2020-09-17 | 日立グローバルライフソリューションズ株式会社 | Compressor and apparatus with compressor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435702A (en) * | 1993-01-28 | 1995-07-25 | Matsushita Refrigeration Company | Hermetic compressor |
| JPH0932772A (en) * | 1995-07-25 | 1997-02-04 | Mitsubishi Electric Corp | Scroll compressor |
| JP2000310187A (en) * | 1999-04-28 | 2000-11-07 | Matsushita Electric Ind Co Ltd | Sealed compressor |
| JP3562444B2 (en) * | 2000-06-15 | 2004-09-08 | 松下電器産業株式会社 | Hermetic compressor |
| JP2002213357A (en) * | 2001-01-18 | 2002-07-31 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| JP2004003406A (en) * | 2002-06-03 | 2004-01-08 | Matsushita Electric Ind Co Ltd | Sealed type compressor |
-
2004
- 2004-03-04 JP JP2004060713A patent/JP2005248843A/en active Pending
-
2005
- 2005-03-02 CN CNB2005100528920A patent/CN100336284C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482114B (en) * | 2008-01-09 | 2011-12-21 | 日立空调·家用电器株式会社 | Airtight electric compressor |
| CN102032188A (en) * | 2009-09-30 | 2011-04-27 | 三洋电机株式会社 | Rotary compressor and its manufacturing method |
| CN102528374A (en) * | 2012-01-04 | 2012-07-04 | 西安加立方鼓风机有限公司 | On-site repairing method for SJ type air-intake sintering system |
| CN108631500A (en) * | 2017-03-15 | 2018-10-09 | 三菱电机(广州)压缩机有限公司 | Compressor and its rotor assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005248843A (en) | 2005-09-15 |
| CN100336284C (en) | 2007-09-05 |
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