CN101560979A - Slip control device for rotary compressor - Google Patents
Slip control device for rotary compressor Download PDFInfo
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- CN101560979A CN101560979A CNA2009100394267A CN200910039426A CN101560979A CN 101560979 A CN101560979 A CN 101560979A CN A2009100394267 A CNA2009100394267 A CN A2009100394267A CN 200910039426 A CN200910039426 A CN 200910039426A CN 101560979 A CN101560979 A CN 101560979A
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- slide plate
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- slip
- rotary compressor
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Abstract
The invention provides a slip control device for a rotary compressor, comprising a compression component and a motor component which are arranged in a closed shell. The compression component comprises a first cylinder, a second cylinder, an eccentric crank shaft, an upper bearing and a lower bearing supporting an eccentric shaft, and a center separator between the first cylinder and the second cylinder, wherein the inside of each cylinder is provided with a first piston, a second piston, a first slip groove and a second slip groove; a first slip and a compression spring are arranged in the first slip groove; a second slip is arranged in the second slip groove; the second slip groove is communicated with a slip cavity; the slip cavity is communicated with a pressure conveying pipe; magnets for adsorbing are arranged on the periphery of the second slip. Distance between the end face of the magnet towards the second slip and the end face of the second slip is more than or equal to 0.1mm, and less than or equal to 5mm. The slip control device has the characteristics of reliable performance, high safety degree and long service life.
Description
Technical field
The present invention relates to the device for controlling sliding vane of a kind of rotary compressor, particularly a kind of rotary compressor.
Background technique
Common twin-tub or multi-cylinder rotary compressor, as shown in Figure 1, the compressor of sealing is provided with compression assembly 1 and electric machine assembly 2.Compression assembly comprises two cylinders, be respectively first cylinder 3.1 and second cylinder 3.2, be respectively arranged with the first piston 4.1 and second piston 4.2 in each cylinder, and be separately positioned on first slide plate 6.1 and second slide plate 6.2 in cylinder first vane slot 5.1 and second vane slot 5.2, the eccentric crankshaft of driven plunger, eccentric crankshaft comprises eccentric crankshaft main shaft 7.1 and eccentric crankshaft countershaft 7.2, support the upper bearing (metal) 8.1 and the lower bearing 8.2 of eccentric crankshaft, separate the central diaphragm 9 of two cylinders up and down, the eccentric crankshaft that drives by electric machine assembly 2 passes torque to the first piston 4.1 and second piston 4.2, the pressurized gas of cylinder compression are discharged to system side by enclosure interior from discharge pipe 10, therefore, pressing in the housing is the high pressure side.The back of first slide plate 6.1 of first cylinder 3.1 is connected with the pressure spring 6.1.1 that promotes the slide plate action, the motion of slide plate is provided by the elastic force of 6.1.1 during compressor start, is just moved by high pressure in first vane slot 5.1 and common first slide plate 6.1 that promotes of pressure spring 6.1.1 behind the compressor start; Second slide plate, 6.2 backs of second cylinder 3.2 then do not promote the spring of vane motion, and second vane slot 5.2 and withdrawing hole 5.4 forms airtight slide plate chambeies and be connected an end of penstock 11; Penstock 11 can optionally flow to airtight slide plate chamber with exhaust high pressure in the compressor housing and the switching of air-breathing low pressure, and some scheme of optionally switching air pressure has certainly been used a switching valve 12.
When being high pressure in the penstock 11, then second slide plate, 6.2 proper motion work, cylinder has compression exhaust; When being low pressure in the penstock 11, then second slide plate 6.2 stops in the vane slot 5.2, and cylinder does not compress no exhaust; Second cylinder 3.2 switches between exhaust and not exhaust, and then compressor forms the variation of air displacement, and the transfiguration function is achieved.
Here mention and in penstock 11, be low pressure, be that the slide plate chamber is when being low pressure, then second slide plate 6.2 stops in the vane slot 5.2, yet in fact because fluctuation can appear in the low pressure in low pressure in the cylinder 3.2 and slide plate chamber, and second slide plate 6.2 itself also can produce vibration owing to the running of compressor, these two factors just are easy to make second slide plate 6.2 to be projected in second cylinder 3.2 and produce collision with second piston 4.2, rebound after the collision, collide with slide plate chamber wall again, so form abominable noise, see accompanying drawing 18, even the broken invalid of slide plate and piston might occur.
Summary of the invention
Purpose of the present invention aims to provide a kind of simple and reasonable, reliable performance, safety rate height, long service life, reduces because the device for controlling sliding vane of the rotary compressor of the noise that vibration causes and the destruction that may occur greatly, to overcome deficiency of the prior art.
Press the device for controlling sliding vane of a kind of rotary compressor of this purpose design, comprise the compression assembly and the electric machine assembly that are arranged in the closed shell, compression assembly comprises first cylinder, second cylinder, eccentric crankshaft, support the metal (upper of eccentric shaft and be arranged on first cylinder and second cylinder between central diaphragm, be respectively arranged with the first piston and second piston in each cylinder, first vane slot and second vane slot, be provided with first slide plate and pressure spring in first vane slot, be provided with second slide plate in second vane slot, second vane slot communicates with the slide plate chamber, the slide plate chamber communicates with penstock, it is characterized in that second slide plate around be provided with the magnet that is used to adsorb.
The spacing of described magnet between the end face of the end face of second slide plate and second slide plate be more than or equal to 0.1mm, and smaller or equal to 5mm.
Described magnet is first magnet and second magnet, and first magnet and second magnet are separately positioned on the central diaphragm and lower bearing at the place, slide plate chamber that is positioned at the second slide plate back; The magnetic force of first magnet and second magnet equates.
First spacing between one end of described second slide plate and the external diameter of second piston is greater than zero the time, and second spacing between the center line of the other end of second slide plate and first magnet and second magnet is more than or equal to zero; When first spacing between one end of second slide plate and the external diameter of second piston equalled zero, the 3rd spacing between the end of the other end of second slide plate and first magnet and second magnet was greater than 0.2mm, and smaller or equal to 5mm.
Described magnet is the 3rd magnet, and the 3rd magnet vertically is arranged on the cylinder wall in slide plate chamber at the second slide plate back; The 3rd magnet is little towards an end of second slide plate, and its other end is big; The 3rd magnet is perpendicular to the end face of first cylinder or second cylinder, and the magnetic pole of the 3rd magnet is towards also close second slide plate.
Described magnet is the 4th magnet, and the 4th magnet is arranged on the left side or the right side of second slide plate, and the 4th magnet is little towards an end of second slide plate, and its other end is big; The 4th magnet is perpendicular to the end face of first cylinder or second cylinder, and the magnetic pole of the 4th magnet is towards also close second slide plate.
Described magnet is the 5th magnet, and the 5th magnet is arranged on central diaphragm or the lower bearing, and be positioned at second vane slot above or below, the 5th magnet is little towards an end of second slide plate, its other end is big, the magnetic pole of the 5th magnet towards and near second slide plate.
Described magnet is the 6th magnet, and the 6th magnet is arranged on central diaphragm or the lower bearing, and across second vane slot, the magnetic pole of the 6th magnet is towards also close second slide plate.
The present invention is provided with the magnet of absorption second slide plate around second slide plate, utilize magnetic force to improve motion air-breathing and exhaust pressure control slide plate, when both having solved second slide plate and having switched to halted state by work, the absorption of magnet can allow second slide plate stop rapidly, solved again after second slide plate stops, the second slide plate slide plate not can because of the fluctuation of air pressure and the vibration of self once more with piston collisions, thereby reduce greatly because noise that vibration causes and the destruction that may occur, thereby improve the quality and the reliability of compressor, prolonged working life; And realize that excellent slide plate drives.
The present invention has the characteristics of reliable performance, safety rate height, long service life.
Description of drawings
Fig. 1 is the sectional structure schematic representation of prior art.
Fig. 2 is the structural representation of first embodiment among the present invention.
Fig. 3 is that B-B among Fig. 2 is to the broken section structural representation.
Fig. 4 is among first embodiment, the structural representation when second slide plate moves to and contacts with the external diameter of second piston.
Fig. 5 is the structural representation of second embodiment among the present invention.
Fig. 6 is that C-C among Fig. 5 is to the broken section structural representation.
Fig. 7 is the structural representation of the 3rd embodiment among the present invention.
Fig. 8 is that D-D among Fig. 7 is to the broken section structural representation.
Fig. 9 is the structural representation of the 4th embodiment among the present invention.
Figure 10-Figure 11 is the schematic cross-section of the 3rd magnet among the present invention, the 4th magnet, the 5th magnet.
Figure 12 is the structural representation of the 5th embodiment among the present invention.
Figure 13 is that E-E among Figure 12 is to the broken section structural representation.
Figure 14 is the structural representation of the 6th embodiment among the present invention.
Figure 15 is that F-F among Figure 14 is to the broken section structural representation.
Figure 16 is that G-G among Figure 15 is to the broken section structural representation.
Figure 17 is the vibration test figure as a result of slide plate of the prior art.
Figure 18 is the vibration test of the slide plate among the present invention figure as a result.
Among the figure: 1 is compression assembly, and 2 is electric machine assembly, and 3.1 is first cylinder, 3.2 be second cylinder, 4.1 be first piston, 4.2 is second piston, 5.1 is first vane slot, 5.2 be second vane slot, 5.3 is the slide plate chamber, 5.4 is the withdrawing hole, 6.1 be first slide plate, 6.1.1 is a pressure spring, 6.2 is second slide plate, 7.1 be main shaft, 7.2 is countershaft, 8.1 is upper bearing (metal), 8.2 be lower bearing, 9 is central diaphragm, 10 is discharge pipe, 11 is penstock, and 12 is switching valve, and 13.1 is first magnet, 13.2 be second magnet, 13.3 be the 3rd magnet, 13.4 is the 4th magnet, 13.5 is the 5th magnet, 13.6 be the 6th magnet, 14 inlet holes when working for cylinder.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Below adopt with background technique in identical reference character describe.
First embodiment
Referring to Fig. 2-Fig. 4 and Figure 17, first magnet 13.1 in the device for controlling sliding vane of this rotary compressor and second magnet 13.2 are separately positioned on the central diaphragm 9 and lower bearing 8.2 at the place, slide plate chamber that is positioned at second slide plate, 6.2 backs, second slide plate 6.2 can be by first magnet 13.1 and 13.2 absorption of second magnet, and all the time away from and be not projected in second cylinder 3.2, so just can not bump with second piston 4.2 yet.Wherein, the slide plate chamber can be made of withdrawing hole 5.4 or other forms of hole etc.
When second slide plate 6.2 quits work, when being in the position of just withdrawing from second cylinder, 3.2 inwalls, the back of second slide plate 6.2 can not stride across the center line of first magnet 13.1 and second magnet 13.2; Promptly the first spacing d1 between the external diameter of an end of second slide plate 6.2 and second piston 4.2 is greater than zero the time, the second spacing d2 between the center line of the other end of second slide plate 6.2 and first magnet 13.1 and second magnet 13.2 is more than or equal to zero, so just can better bring into play the magnetic force of first magnet 13.1 and second magnet 13.2, prevent of the direction motion of second slide plate 6.2 to second piston 4.2.
In addition, when magnet contacts proper functioning with piston, slide plate rear end and magnet maintain a certain distance, when promptly the first spacing d1 between the external diameter of an end of second slide plate 6.2 and second piston 4.2 equals zero, the 3rd spacing d3 between the end of the other end of second slide plate 6.2 and first magnet 13.1 and second magnet 13.2 is greater than 0.2mm, and smaller or equal to 5mm; This technological scheme can further solve the another one problem, will describe in detail below:
When compressor start, first cylinder, 3.1 beginning compression refrigerants, yet this moment, the exhaust pressure of air-conditioning system progressively raise, pressure for fear of the second slide plate chamber progressively raises, second slide plate 6.2 is subjected to unsettled thrust, then must control in the pressure-activated process in the second slide plate chamber and be always low pressure, the pressure controlled valve 12 that joins with penstock 11 can not omit so
Yet, if after adopting technological scheme provided by the invention, then can omit pressure controlled valve 12, thereby reach the purpose that reduces fabricating cost, its reason be adopt " when the first spacing d1 between an end of second slide plate 6.2 and the external diameter of second piston 4.2 equals zero; the 3rd spacing d3 between the end of the other end of second slide plate 6.2 and first magnet 13.1 and second magnet 13.2 is greater than 0.2mm; and smaller or equal to 5mm " during scheme, when the magnetic force of first magnet 13.1 and second magnet 13.2 is designed into when enough big, no matter which kind of unsettled pressure the second slide plate chamber is in the compressor start process, second slide plate 6.2 all can be adsorbed by first magnet 13.1 and second magnet 13.2, and motion that can be stable
And after compressor start is finished, when exhaust pressure is enough big steady pressure, its pressure is enough to overcome the magnetic force of first magnet 13.1 and second magnet 13.2 and drives the motion of second slide plate 6.2, and in the movement process, when the first spacing d1 between the external diameter of the end of second slide plate 6.2 and second piston 4.2 equals zero, the 3rd spacing d3 between the end of the other end of second slide plate 6.2 and first magnet 13.1 and second magnet 13.2 is greater than 0.2mm, and during smaller or equal to 5mm, second slide plate 6.2 is subjected to magnetic force little, and magnetic force can not influence the proper motion of second slide plate.
First magnet 13.1 and the second magnet 13.2 spacing d4 between the end face of the end face of second slide plate 6.2 and second slide plate 6.2 is more than or equal to 0.1mm, and smaller or equal to 5mm.This scheme can prevent that second slide plate 6.2 from contacting with second the direct of magnet 13.2 with first magnet 13.1, prevents the wearing and tearing of first magnet 13.1 and second magnet 13.2, to increase reliability.
Because in the start-up course, the pressure in the second slide plate chamber can be left it with system change, do not need to do control by force, so can omit pressure controlled valve 12, reduce fabricating cost significantly.The magnetic pole of first magnet 13.1 and second magnet 13.2 is arranged on the side towards slide plate, effect that can more effective performance magnetic force.
After adopting such scheme provided by the invention, the vibration of second slide plate reduces greatly, sees Figure 18, and the quality and the reliability of compressor improve greatly.
Second embodiment
Referring to Fig. 5-Fig. 6, the 3rd single magnet 13.3 is set on the cylinder in slide plate chamber at second slide plate, 6.2 backs, can utilize magnetic force to prevent that second slide plate 6.2 from producing vibration equally; The 3rd magnet 13.3 is designed to the shape of anticreep simultaneously, promptly the 3rd magnet 13.3 is little towards an end of second slide plate 6.2, its the other end is big, be cucurbit shape or trapezoidal or the like as its cross section, see Figure 10-Figure 11, can avoid the 3rd magnet 13.3 to deviate from and lost efficacy, the magnetic pole of the 3rd magnet 13.3 towards and near second slide plate 6.2, effect that then can more effective performance magnetic force; The mounting hole of the 3rd magnet 13.3 can be designed to be positioned on second cylinder 3.2 and perpendicular to the through hole or the counterbore of second cylinder 3.2, this position should help the enforcement of processing technology and the installation of magnet as far as possible.
All the other are not stated part and see first embodiment, no longer repeat.
The 3rd embodiment
Referring to Fig. 7-Fig. 8, the 4th single magnet 13.4 is arranged on the left side or the right side of second slide plate 6.2, and the 4th magnet 13.4 is perpendicular to the end face of first cylinder 3.1 or second cylinder 3.2, and the magnetic pole of the 4th magnet 13.4 is towards also close second slide plate 6.2.
At this moment, second slide plate 6.2 is owing to the magnetic force that is subjected to the 4th magnet 13.4 is close to second vane slot 5.2, and the increase of the frictional force between second vane slot 5.2, thereby stops the vibration of second slide plate 6.2, to prevent second slide plate, 6.2 collisions, second piston 4.2.
The 4th magnet 13.4 is designed to the shape of anticreep, and promptly the 4th magnet 13.4 is little towards an end of second slide plate 6.2, and its other end is big; This structure can effectively avoid the 4th magnet 13.4 to deviate to lose efficacy, and the magnetic pole of the 4th magnet 13.4 is arranged on towards a side of second slide plate 6.2, effect that then can more effective performance magnetic force; The mounting hole of the 4th magnet 13.4 is designed on second cylinder and perpendicular to the through hole or the counterbore of second cylinder, this position should help the enforcement of processing technology and the installation of magnet as far as possible.
The 4th magnet 13.4 is approaching in the length of the length of vertical direction and second slide plate 6.2, sees Fig. 8.
All the other are not stated the part branch and see first embodiment and second embodiment, no longer repeat.
The 4th embodiment
Referring to Fig. 9, the 4th magnet 13.4 is approaching in half length of the length of vertical direction and second slide plate 6.2.
All the other are not stated the part branch and see the 3rd embodiment, no longer repeat.
The 5th embodiment
Referring to Figure 12-Figure 13, the 5th magnet 13.5 is arranged on central diaphragm 9 or the lower bearing 8.2, and be positioned at second vane slot 5.2 above or below, because the effect of magnetic force, second slide plate 6.2 is abutted against on central diaphragm 9 or the lower bearing 8.2, increase with the frictional force of central diaphragm 9 or lower bearing 8.2, thereby stop second slide plate 6.2 to produce vibration, prevent second slide plate, 6.2 collisions, second piston 4.2.
The 5th magnet 13.5 is designed to the shape of anticreep, can avoid the 5th magnet 13.5 to deviate to lose efficacy, the 5th magnet 13.5 is little towards an end of second slide plate 6.2, its the other end is big, the magnetic pole of the 5th magnet 13.5 is arranged on towards a side of second slide plate and near second slide plate 6.2, so that the effect of more effective performance magnetic force.
All the other are not stated the part branch and see first embodiment and second embodiment, no longer repeat.
The 6th embodiment
Referring to Figure 14-Figure 16, the 6th magnet 13.6 is arranged on central diaphragm 9 or the lower bearing 8.2, and be the character cut in bas-relief shape etc. of arc, arch or upset across the cross section of second vane slot, 5.2, the six magnet 13.6, the magnetic pole of the 6th magnet 13.6 towards and near second slide plate 6.2.At this moment, it not only can bring into play the function similar as the 5th embodiment, prevents second slide plate, 6.2 collisions, second piston 4.2; Also because the 6th magnet 13.6 across on second slide plate 6.2, the spacing d4 of easier assurance the 6th magnet 13.6 between the end face of the end face of second slide plate 6.2 and second slide plate 6.2 be more than or equal to 0.1mm, and smaller or equal to 5mm.
All the other are not stated part and see first embodiment, no longer repeat.
Claims (8)
1. the device for controlling sliding vane of a rotary compressor, comprise the compression assembly (1) and the electric machine assembly (2) that are arranged in the closed shell, compression assembly comprises first cylinder (3.1), second cylinder (3.2), eccentric crankshaft, support the metal (upper of eccentric shaft and be arranged on first cylinder and second cylinder between central diaphragm (9), be respectively arranged with first piston (4.1) and second piston (4.2) in each cylinder, first vane slot (5.1) and second vane slot (5.2), be provided with first slide plate (6.1) and pressure spring (6.1.1) in first vane slot, be provided with second slide plate (6.2) in second vane slot, second vane slot communicates with the slide plate chamber, the slide plate chamber communicates with penstock (11), it is characterized in that second slide plate around be provided with the magnet that is used to adsorb.
2. the device for controlling sliding vane of rotary compressor according to claim 1 is characterized in that the spacing (d4) of described magnet between the end face of the end face of second slide plate (6.2) and second slide plate more than or equal to 0.1mm, and smaller or equal to 5mm.
3. the device for controlling sliding vane of rotary compressor according to claim 2, it is characterized in that described magnet is first magnet (13.1) and second magnet (13.2), first magnet and second magnet are separately positioned on the central diaphragm of the slide plate chamber (5.3) that is positioned at second slide plate (6.2) back locating (9) and lower bearing (8.2); The magnetic force of first magnet and second magnet equates.
4. the device for controlling sliding vane of rotary compressor according to claim 3, it is characterized in that first spacing (d1) between the external diameter of the end of described second slide plate (6.2) and second piston greater than zero the time, second spacing (d2) between the center line of the other end of second slide plate and first magnet (13.1) and second magnet (13.2) is more than or equal to zero; When first spacing between one end of second slide plate and the external diameter of second piston equalled zero, the 3rd spacing (d3) between the end of the other end of second slide plate and first magnet and second magnet was greater than 0.2mm, and smaller or equal to 5mm.
5. the device for controlling sliding vane of rotary compressor according to claim 2 is characterized in that described magnet is the 3rd magnet (13.3), and the 3rd magnet vertically is arranged on the cylinder wall in slide plate chamber at second slide plate (6.2) back; The 3rd magnet is little towards an end of second slide plate, and its other end is big; The 3rd magnet is perpendicular to the end face of first cylinder (3.1) or second cylinder (3.2), and the magnetic pole of the 3rd magnet is towards also close second slide plate.
6. the device for controlling sliding vane of rotary compressor according to claim 2, it is characterized in that described magnet is the 4th magnet (13.4), the 4th magnet is arranged on the left side or the right side of second slide plate (6.2), and the 4th magnet is little towards an end of second slide plate, and its other end is big; The 4th magnet is perpendicular to the end face of first cylinder (3.1) or second cylinder (3.2), and the magnetic pole of the 4th magnet is towards also close second slide plate.
7. the device for controlling sliding vane of rotary compressor according to claim 2, it is characterized in that described magnet is the 5th magnet (13.5), the 5th magnet is arranged on central diaphragm (9) or the lower bearing (8.2), and be positioned at second vane slot (5.2) above or below, the 5th magnet is little towards an end of second slide plate (6.2), its the other end is big, and the magnetic pole of the 5th magnet is towards also close second slide plate.
8. the device for controlling sliding vane of rotary compressor according to claim 2, it is characterized in that described magnet is the 6th magnet (13.6), the 6th magnet is arranged on central diaphragm (9) or the lower bearing (8.2), and across second vane slot (5.2), the magnetic pole of the 6th magnet is towards also close second slide plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100394267A CN101560979A (en) | 2009-05-08 | 2009-05-08 | Slip control device for rotary compressor |
| CN2009101645987A CN101614208B (en) | 2009-05-08 | 2009-07-16 | Device for controlling sliding vane of rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100394267A CN101560979A (en) | 2009-05-08 | 2009-05-08 | Slip control device for rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101560979A true CN101560979A (en) | 2009-10-21 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100394267A Pending CN101560979A (en) | 2009-05-08 | 2009-05-08 | Slip control device for rotary compressor |
| CN2009101645987A Active CN101614208B (en) | 2009-05-08 | 2009-07-16 | Device for controlling sliding vane of rotary compressor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101645987A Active CN101614208B (en) | 2009-05-08 | 2009-07-16 | Device for controlling sliding vane of rotary compressor |
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| CN (2) | CN101560979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805003A (en) * | 2016-03-04 | 2016-07-27 | 广东美芝制冷设备有限公司 | Multi-cylinder rotating compressor and rotating compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397998B (en) * | 2008-10-31 | 2011-05-25 | 广东美芝制冷设备有限公司 | Slide holding device of rotary compressor and control method thereof |
-
2009
- 2009-05-08 CN CNA2009100394267A patent/CN101560979A/en active Pending
- 2009-07-16 CN CN2009101645987A patent/CN101614208B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805003A (en) * | 2016-03-04 | 2016-07-27 | 广东美芝制冷设备有限公司 | Multi-cylinder rotating compressor and rotating compressor |
| CN105805003B (en) * | 2016-03-04 | 2018-03-06 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor and rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101614208B (en) | 2012-07-11 |
| CN101614208A (en) | 2009-12-30 |
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