CN1295434C - Closed electric compressor - Google Patents
Closed electric compressor Download PDFInfo
- Publication number
- CN1295434C CN1295434C CNB2004100347352A CN200410034735A CN1295434C CN 1295434 C CN1295434 C CN 1295434C CN B2004100347352 A CNB2004100347352 A CN B2004100347352A CN 200410034735 A CN200410034735 A CN 200410034735A CN 1295434 C CN1295434 C CN 1295434C
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- compressor
- seal container
- sealed electrical
- lumen pore
- electrical compressor
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention prevents fracture of a suspension spring and a discharge line by keeping whirling of a mechanical part right after start and stop in a hermetic electric compressor.A flange part 114a is provided close to a opening part of a bore part 114 of a cylinder block 113 and a regulating part 102a is provided at a position countering the flange part 114a on a lower shell 102. Since the flange part 114a of the bore part 114 which has largest energy is abutted on the regulating part 102a first, when the mechanical part whirls, whirling of the mechanical part at a time of start and stop can be effectively reduced.
Description
Technical field
The present invention relates to the high sealed electrical compressor of reliability of use in refrigerator, air-conditioning etc.
Background technique
In recent years, for sealed electrical compressor (to call compressor in the following text) at high efficiency and low noise and have and have higher requirement aspect the high reliability.
As existing compressor is by possessing the elasticity absorber in seal container, and restriction starts and motion when stopping.For example, describe for an example of speciallyying permit the described existing compressor of putting down in writing in No. 3045745 communique in Japan.
With reference to the following drawings, describe for an example of above-mentioned existing compressor.
Fig. 6 is the cross section of existing hermetic type compressor.Fig. 7 is the top cross-sectional view of existing hermetic type compressor.
The rotor 5 of Electric actuator 6 is pressed on the main shaft 11 that is fixed on bent axle 10.In addition, in seal container 3 inside, according to vacating the elasticity absorber 3a that micro-gap is provided with rubber etc. like that with Electric actuator 6 or compression set 7.
Action to above-mentioned such compressor that constitutes describes below.
With the startup while of compressor, the refrigerant gas of the low-temp low-pressure that returns by freeze cycle (not shown), by the suction chamber (not shown) of suction pipe (not shown), cylinder head 19 and the inlet hole (not shown) of valve plate 18, suck guide (not shown) and open, refrigerant gas is directed the lumen pore portion 14 of admission cylinder body 13 and is compressed.The refrigerant gas of the High Temperature High Pressure after being compressed is directed into freeze cycle (not shown) by discharge pipe line (not being illustrated).
In addition, behind the compressor start, produce the torque of direction opposite each other between rotor 5 and the stator 4, this power makes the Machinery Ministry of being made up of the cylinder block 13 that is fixed with stator 4 and connected compression set 7 and Electric actuator 6 swing to the reverse directions of rotor 5, alternately swing rotation on sense of rotation and reverse turn direction on one side then, little by little decay on one side, the swing rotation of Machinery Ministry finishes.
In addition, if cut-out power of compressor, though the mutual instantaneous disappearance of torque between rotor 5 and the stator 4, but rotor relies on inertia and is rotated further, when entering compression section, press in producing in the lumen pore portion 14 piston 15 is pushed back, by the counter-force of this piston 15, the rotation of rotor 5 stops sharp.Consequently, the rotation of rotor 5 can be delivered on the whole Machinery Ministry of being made up of aforementioned compression set 7 and aforementioned Electric actuator 6 by lumen pore portion 14 grades through bent axle 10, transmission part 16, piston 15.By the energy of this swing rotation, Yi Bian whole Machinery Ministry is alternately swung the elastic force that rotation relies on suspension spring 9 on one side on sense of rotation and reverse turn direction, restriction is moved and is decayed to static gradually.
In addition, in above-mentioned startup, the swing of whole Machinery Ministry is rotated under the king-sized situation when stopping, contacting with elasticity absorber 3a by Machinery Ministry, the energy of this swing rotation is absorbed, and the swing rotation promptly stops.
But, in above-mentioned existing formation, when starting and stopping, be benchmark with axle center as the main shaft 11 of the bent axle 10 of the center of rotation of rotor 5, the rotary inertia the best part has maximum rotational energy, the energy of promptly maximum swing rotation.Part with this full swing energy of rotation is included in the common reciprocating compressor from the lumen pore portion 14 of the bigger piston 15 of center of rotation off-centre and weight ratio.
In addition, in above-mentioned existing formation, when starting and stopping, owing on Machinery Ministry, have the lumen pore portion 14 of full swing rotating energy without limits, so residual bigger swing rotating energy in lumen pore portion 14, and produced the problem that is difficult to fully suppress the swing rotating amount of whole Machinery Ministry.
Particularly when being formed in startup, starts Electric actuator 6 as induction motor, and near synchronous speed the time, introduce synchronously, in the compressor of synchronous operated synchronous motor, because when introducing running synchronously, the acceleration moment ground of rotor 5 increases, so there is the big problem of swing rotation quantitative change of Machinery Ministry especially when starting.Permanent magnet magnetic force in the iron core of interior plant rotor 5 is strong, and above-mentioned acceleration is bigger.
Consequently, in such compressor, also carry out big swing rotation with the suspension spring 9 of Machinery Ministry and seal container 3 Elastic Contact and discharge pipe line (not shown), so there is the problem of the fatigue damage that may cause these parts.
Summary of the invention
The present invention is in order to solve this existing problem, and purpose is the swing rotating amount of the Machinery Ministry that suppresses the startup of compressor and stopping when, provides reliability high compressor.
Sealed electrical compressor of the present invention is flexibly to receive Electric actuator and the compression set that dress is made up of stator and rotor in seal container, and compression set has bent axle, the supports main shaft that is made of main shaft and eccentric shaft and the cylinder block with lumen pore portion, the piston that moves back and forth and the rotational motion of eccentric shaft is transmitted to piston in lumen pore portion transmission part, lumen pore portion has lip part on two side, have the limitation part that limit flange portion moves on the position relative with the lip part of seal container.By such formation, can provide the high compressor of reliability of breakage of preventing suspension spring and discharge pipe line etc.
Description of drawings
Fig. 1 is the longitudinal section of the 1st embodiment's the hermetic type compressor according to the present invention.
Fig. 2 is the cross-sectional view of the same hermetic type compressor.
Fig. 3 is the upper section figure of the same hermetic type compressor.
Fig. 4 is the longitudinal section of the 2nd embodiment's the hermetic type compressor according to the present invention.
Fig. 5 is the upper section figure of the same hermetic type compressor.
Fig. 6 is the cross-sectional view of existing hermetic type compressor.
Fig. 7 is the upper section figure of existing hermetic type compressor.
Embodiment
Following with reference to accompanying drawing, the embodiment of compressor of the present invention is described.
(the 1st embodiment)
Fig. 1 is the longitudinal section of the 1st embodiment's the compressor according to the present invention.Fig. 2 is the cross-sectional view according to this embodiment's compressor.Fig. 3 is the upper section figure according to this embodiment's compressor.
In Fig. 1, Fig. 2 and Fig. 3, upper casing 101 and lower casing 102 combine and form seal container 103 by welding.The Electric actuator 106 that configuration is made of stator 104 and rotor 105 above seal container 103, below configuration compression set 107.In on the inwall that supporting part 108 is contained in lower casing 102, flexibly support the Machinery Ministry of forming by Electric actuator 106 and compression set 107 by suspension spring 109.On compression set 107, possesses bent axle 110 with main shaft 111 and eccentric shaft 112, with bearing supports main shaft 111 and have the cylinder block 113 of lumen pore portion 114 rotationally, be set at the lip part 114a near two sides of lumen pore portion 114, reciprocating piston 115 in lumen pore portion 114, the driving mechanism 116 that when being connected rotational motion is transmitted to aforementioned piston 115 with the eccentric shaft 112 of bent axle 110, suck guide (not shown), valve plate 118 with inlet hole (not shown) and tap hole (not shown), be formed with the cylinder head 119 of suction chamber (not shown) and discharge chamber (not shown).
The rotor 105 of Electric actuator 106 is pressed in the main shaft 111 that is fixed on bent axle 110.
In addition, by with lower casing 102 draw formings, on the position relative, limitation part 102a is set with lip part 114a, this limitation part 102a is set in the startup of compressor and during the Machinery Ministry swing rotation be made up of Electric actuator 106 and compression set 107 when stopping, initial lip part 114a contacts with limitation part 102a.In addition, posting shock absorbing material 102b with the outside of the corresponding seal container 103 of this limitation part 102a.
To above such compressor that constitutes, its action is described below.
Compressor one starts, the torque that rotor 105 and stator 104 promptly produce direction opposite each other, feasible cylinder block 113 and the connected Machinery Ministry of forming by compression set 107 and Electric actuator 106 that is fixed with stator 104 of this power, reverse turn direction swing to rotor 105, but the lip part 114a with lumen pore portion 114 of this full swing rotating energy contacts and is limited to move with limitation part 102a at first, alternately swing rotation on sense of rotation and reverse turn direction on one side then, little by little decay on one side, the swing rotation of Machinery Ministry finishes.
In addition, if cut-out power of compressor, though torque mutual between instantaneous stator 104 and rotor 105 disappears, but rotor 105 relies on inertia to rotate to sense of rotation, in compression section, press liter in the lumen pore portion 114 piston 115 is pushed back, because the counter-force of this piston 115, the rotation of rotor 105 stops sharp.Consequently, the rotation of rotor 105 can, be swung to sense of rotation to the whole Machinery Ministry transmission of being made up of aforementioned Electric actuator 106 and aforementioned compression set 107 by lumen pore portion 114 grades through bent axle 110, driving mechanism 116, piston 115.At this, lip part 114a on the side of lumen pore portion 114 with this full swing rotating energy, the initial contact and be limited vibration to above-mentioned sense of rotation with limitation part 102a, Machinery Ministry alternately swing rotation on sense of rotation and reverse turn direction on one side then, little by little decay on one side, the swing rotation of Machinery Ministry finishes.At this moment, the lip part 114a of aforementioned lumen pore portion 114 and the distance X between the 102a of aforementioned limitations portion are set minimumly in the distance between Machinery Ministry on the horizontal section and the seal container 103.By changing this distance X, the displacement amount of limit mechanical portion arbitrarily.By the displacement amount of limit mechanical portion, the displacement amount of limiting emission pipeline 121 and suspension spring 109 prevents the breakage of these parts simultaneously.
Certainly, when setting this distance X, by on lip part 114a protuberance being set, or the distance that the shape by adjusting limitation part 102a, size etc. are adjusted X also can obtain same effect.
In addition, since with limitation part 102a opposite position on the outside of seal container 103 post shock absorbing material 102b, even so at compressor start with when stopping, lip part 114a contacts with the draw forming part 102a of seal container 103, shock absorbing material 102b absorbs impact, can obtain the little effect of sound.
In addition, though shock absorbing material 102b is attached to the outside with the seal container 103 of limitation part 102a opposite position in the present embodiment, if but be attached to seal container 103 inside of limitation part 102a, compressor start and when stopping lip part 114a contact with shock absorbing material 102b, thereby can absorb impact, can obtain the effect of above on an equal basis reduction sound.
In addition, by setting the lip part 114a of aforementioned lumen pore portion 114 and the distance X between the 102a of aforementioned limitations portion less, the mobile of lumen pore portion 114 of the center of gravity of close Machinery Ministry is limited, even when the transportation compressor, big displacement can not take place in Machinery Ministry yet, can control lessly with coming from the external force influence to discharge pipe line 121 and suspension spring 109 that outside vibration and impact cause.
In addition, the product that the swing rotating amount of Machinery Ministry is subjected to press in the moment of inertia of eccentric part of the acceleration of rotor 105 or piston 15 etc. or the cylinder and piston cross-section amasss etc. influences bigger.For example, since the evaporating temperature height, the compressor that the low pressure before stopping to uprise, with the inflator volume becomes big for the thin refrigeration agent that uses R600a etc., thereby piston cross-section amasss in the compressor that becomes big, and when stopping, the swing of Machinery Ministry rotation quantitative change is big especially.In addition, in order to introduce operation synchronously, and moment increases in the compressor of synchronous operation of acceleration of rotor 105, and particularly when starting, the swing of Machinery Ministry rotation quantitative change is big.Even in such compressor, the swing rotating amount of the Machinery Ministry when starting and stopping by inhibition, the suspension spring 109 and the suspension spring 121 that flexibly connect Machinery Ministry and seal container 103 can obtain sufficient endurance quality, and the compressor of high reliability can be provided.
(the 2nd embodiment)
Fig. 4 is the longitudinal section of the 2nd embodiment's the hermetic type compressor according to the present invention.Fig. 5 is the upper section figure according to this embodiment's hermetic type compressor.
For the formation identical with the 1st mode of execution, the identical symbol of annotating, and detailed.
In Fig. 4, Fig. 5, the limitation part 202a of spill steel formability is set on the position relative with the both sides of the lip part 214a of lumen pore portion 214 by welding.This limitation part 202a is at compressor start with when stopping during in the Machinery Ministry swing rotation of being made up of Electric actuator 106 and compression set 107, and lip part 214a contacts with limitation part 202a and sets like that at first.In addition, Electric actuator 206 uses to be introduced synchronously near the synchronous speed place, carries out synchronous operated synchronous motor.
Behind the compressor start, produce mutual rightabout torque between rotor 205 and the stator 204, this power makes the cylinder block 213 be fixed with stator 204 and the coupled Machinery Ministry of being made up of compression set 207 and Electric actuator 206, swings to the reverse turn direction of rotor 205.
In addition, synchronous motor is when introducing synchronous speed, and acceleration temporarily increases, thus be commonly referred to as comparing of induction motor, the rightabout rotational torque that produces mutually between rotor 205 and stator 204 increases.Limitation part 202a is set on the position relative with lip part 214a, this lip part 214a is arranged on the both sides of the lumen pore portion 214 of cylinder block 213, makes the distance X between 214a of said flange portion and the limitation part 202a be minimum in the distance of the horizontal section of seal container 203 and Machinery Ministry.So, when moving on to synchronous speed, no matter swing rotating amount and become how greatly, because the lip part 214a of the lumen pore portion 214 of the cylinder block 213 of the energy maximum of swing rotation contacts with limitation part 202a at first, can suppress to swing the energy of rotation effectively.Consequently, can prevent losing of suspension spring 209 and discharge pipe line 221, improve the reliability of compressor.
In addition, when using the strong permanent magnet of terres rares isodynamic as the permanent magnet in interior plant rotor 205 iron cores, when starting, the acceleration when introducing synchronous speed becomes bigger, and the swing amounts of rotation of Machinery Ministry becomes bigger.The lip part 214a of the lumen pore portion 214 by reducing to swing the rotational energy maximum and the distance X between the limitation part 202a, lip part contacts with limitation part 202a at first.Moving of Machinery Ministry can be reduced thus effectively, the reliability of compressor can be improved.
In the present embodiment of above explanation, easily limitation part is set in position owing to can not influence the shape of Machinery Ministry and seal container, so can improve the reliability of compressor.
Claims (6)
1. sealed electrical compressor, in seal container, flexibly receive Electric actuator and the compression set that is made of rotor and stator is housed, described compression set has the bent axle that is made of main shaft and eccentric shaft, support described main shaft and have the cylinder block of lumen pore portion, pistons reciprocating, driving mechanism that the rotational motion of described eccentric shaft is transmitted to described piston in described lumen pore portion, described lumen pore portion has lip part on two side, it is characterized in that
On the position relative, has the limitation part of the motion of the described lip part of restriction with the described lip part of described seal container.
2. sealed electrical compressor as claimed in claim 1 is characterized in that, described limitation part forms by the spill steel plate is fixed on the described seal container.
3. sealed electrical compressor as claimed in claim 1 is characterized in that described limitation part forms by the impact briquetting of described seal container.
4. sealed electrical compressor as claimed in claim 3 is characterized in that described limitation part also has shock absorbing material.
5. as each described sealed electrical compressor in the claim 1～4, it is characterized in that described Electric actuator is to start as induction motor when starting, near synchronous speed the time, introduce synchronously, synchronous operated synchronous motor.
6. sealed electrical compressor as claimed in claim 5 is characterized in that described synchronous motor is built-in rare earth element permanent magnet in its rotor core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003131363A JP2004332648A (en) | 2003-05-09 | 2003-05-09 | Hermetic electric compressor |
| JP2003131363 | 2003-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550668A CN1550668A (en) | 2004-12-01 |
| CN1295434C true CN1295434C (en) | 2007-01-17 |
Family
ID=33506557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100347352A Expired - Fee Related CN1295434C (en) | 2003-05-09 | 2004-05-09 | Closed electric compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004332648A (en) |
| CN (1) | CN1295434C (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5304044A (en) * | 1990-03-06 | 1994-04-19 | Matsushita Refrigeration Company | Hermetic compressor |
| JPH10252653A (en) * | 1997-03-07 | 1998-09-22 | Matsushita Refrig Co Ltd | Sealed motor-driven compressor |
| JPH11311244A (en) * | 1998-04-28 | 1999-11-09 | Matsushita Refrig Co Ltd | Compressor |
| JP2000274363A (en) * | 1999-03-25 | 2000-10-03 | Matsushita Refrig Co Ltd | Hermetic compressor |
| WO2000073656A1 (en) * | 1999-05-27 | 2000-12-07 | Matsushita Refrigeration Company | Suction muffler for a hermetic compressor |
| US6176688B1 (en) * | 1999-10-12 | 2001-01-23 | Tecumseh Products Company | Discharge muffler arrangement |
| CN1316037A (en) * | 1999-07-02 | 2001-10-03 | 松下电器产业株式会社 | Electric compressor |
| US6422833B1 (en) * | 2000-03-07 | 2002-07-23 | Samsung Kwangju Electronics Co., Ltd. | Resonance reducing device for a hermetic compressor |
| CN1096569C (en) * | 1999-04-15 | 2002-12-18 | 松下冷机株式会社 | Suction muffler and closed electric compressor |
| WO2003008805A1 (en) * | 2001-07-16 | 2003-01-30 | Matsushita Refrigeration Company | Sealed type electrically driven compressor |
-
2003
- 2003-05-09 JP JP2003131363A patent/JP2004332648A/en active Pending
-
2004
- 2004-05-09 CN CNB2004100347352A patent/CN1295434C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5304044A (en) * | 1990-03-06 | 1994-04-19 | Matsushita Refrigeration Company | Hermetic compressor |
| JPH10252653A (en) * | 1997-03-07 | 1998-09-22 | Matsushita Refrig Co Ltd | Sealed motor-driven compressor |
| JPH11311244A (en) * | 1998-04-28 | 1999-11-09 | Matsushita Refrig Co Ltd | Compressor |
| JP2000274363A (en) * | 1999-03-25 | 2000-10-03 | Matsushita Refrig Co Ltd | Hermetic compressor |
| CN1096569C (en) * | 1999-04-15 | 2002-12-18 | 松下冷机株式会社 | Suction muffler and closed electric compressor |
| WO2000073656A1 (en) * | 1999-05-27 | 2000-12-07 | Matsushita Refrigeration Company | Suction muffler for a hermetic compressor |
| CN1316037A (en) * | 1999-07-02 | 2001-10-03 | 松下电器产业株式会社 | Electric compressor |
| US6176688B1 (en) * | 1999-10-12 | 2001-01-23 | Tecumseh Products Company | Discharge muffler arrangement |
| US6422833B1 (en) * | 2000-03-07 | 2002-07-23 | Samsung Kwangju Electronics Co., Ltd. | Resonance reducing device for a hermetic compressor |
| WO2003008805A1 (en) * | 2001-07-16 | 2003-01-30 | Matsushita Refrigeration Company | Sealed type electrically driven compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1550668A (en) | 2004-12-01 |
| JP2004332648A (en) | 2004-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20130509 |