CN101008389A - Sealed rotary compressor and refrigerating circulation device comprising same - Google Patents
Sealed rotary compressor and refrigerating circulation device comprising same Download PDFInfo
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- CN101008389A CN101008389A CN 200710007765 CN200710007765A CN101008389A CN 101008389 A CN101008389 A CN 101008389A CN 200710007765 CN200710007765 CN 200710007765 CN 200710007765 A CN200710007765 A CN 200710007765A CN 101008389 A CN101008389 A CN 101008389A
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- 230000006835 compression Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 21
- 239000003507 refrigerant Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005057 refrigeration Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 239000010721 machine oil Substances 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010696 ester oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 125000001153 fluoro group Chemical class F* 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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Abstract
一种密封型旋转式压缩机，在主轴承(11)、副轴承(13)上设有将在气缸室(5a、5b)内压缩后的制冷剂予以排出的排出孔(14a、14b)，当将气缸室(5a、5b)排除容积设为A、叶片(10a、10b)位于下死点时的压缩室(9a、9b)的截面积设为B、排出孔(14a、14b)的截面积设为C时，将该排出孔(14a、14b)设定成为：200≤A/C≤280，C/B≤0.15，且排出孔(14a、14b)的长度作成小于等于3mm，排出孔(14a、14b)面向气缸室(5a、5b)的面积的比例作成大于等于排出孔(14a、14b)的截面积的87％，在气缸(6a、6b)上未设有制冷剂排出用的缺口槽。采用本发明，不在气缸上设置制冷剂排出用的缺口槽就可降低过压缩，提高压缩性能。
A hermetic rotary compressor, the main bearing (11) and the auxiliary bearing (13) are provided with discharge holes (14a, 14b) for discharging the refrigerant compressed in the cylinder chamber (5a, 5b), When the excluded volume of the cylinder chamber (5a, 5b) is set as A, the cross-sectional area of the compression chamber (9a, 9b) when the vane (10a, 10b) is at the bottom dead center is set as B, and the cross-sectional area of the discharge hole (14a, 14b) is When the area is set to C, the discharge holes (14a, 14b) are set to: 200≤A/C≤280, C/B≤0.15, and the length of the discharge holes (14a, 14b) is made to be less than or equal to 3mm, and the discharge holes (14a, 14b) The ratio of the area facing the cylinder chamber (5a, 5b) is made to be greater than or equal to 87% of the cross-sectional area of the discharge hole (14a, 14b), and no refrigerant discharge is provided on the cylinder (6a, 6b). Notch slot. By adopting the present invention, overcompression can be reduced and compression performance can be improved without providing notched grooves for refrigerant discharge on the cylinder.
Description
Technical field
The present invention relates to the hermetic rotary compressor that uses in for example refrigerating circulatory device such as air conditioner and refrigerating circulatory device, relate in particular to exhaust structure is improved, improves the coefficient of performance and improves the hermetic rotary compressor of reliability.
Background technique
In hermetic rotary compressor, for example as shown in figure 11, set the 1st and the 2nd lid member 102 (only illustrating a side) of the bearing that covers cylinder chamber 100 etc. in cylinder 101 both ends of the surface that form cylinder chamber 100, at least one side of these the 1st and the 2nd lid members, be provided with the tap hole 103 that makes the discharge of the refrigeration agent after compression usefulness in cylinder chamber 100.Tap hole 103 forms greatly as far as possible, so that its sectional area is big more, the discharge resistance is more little, can prevent overcompression.
Because compressed refrigerant leaks during interior all spatial communication of tap hole 103 and roller (not shown), refrigerating capacity reduces, so tap hole 103 is near the radial direction outside, with not with roller in all spatial communication, result, the only about half of or long-pending outside of exposing of multiaspect more of tap hole 103 in cylinder chamber 100.Therefore, in the past, for example in the Japanese kokai publication hei 10-103275 communique, on cylinder 101, be provided with the discharge gap slot 104 that the refrigeration agent of cylinder chamber 100 is directed to tap hole 103 usefulness.
And, make tap hole 103 complete faces in the structure of cylinder chamber 100 for example also is disclosed in Japanese kokai publication hei 5-133363 communique in order to prevent the caused expansion-loss again of gap slot.
But in the prior art, although can reduce overcompression, 104 liang of sides of tap hole 103 and gap slot are invalid volume, because expansion-loss becomes big again, so in general, the problem that can not fully improve the coefficient of performance are arranged.
In addition, because the discharging refrigerant tilting action is in expulsion valve 105, so act on the power that torsional direction is arranged, the reliability decrease of expulsion valve 105 on the expulsion valve 105 that is formed by thin plate.
In addition, because of burr takes place machining gap groove 104, this burr has the anxiety that comes off in cylinder chamber 100.
Because if gap slot 104 is located near the blade accommodating groove of cylinder 101, then the blade accommodating groove is out of shape because of machining gap groove 104,, thereby make decreased performance so gap slot 104 and tap hole 103 can not close blade accommodating grooves.
For preventing that the caused expansion-loss again of described gap slot from making tap hole 103 complete faces in the such described patent documentation 2 of cylinder chamber 100, do not record the concrete structure that improves the coefficient of performance.
Summary of the invention
In view of the above problems, the objective of the invention is to, a kind of hermetic rotary compressor and refrigerating circulatory device are provided, refrigeration agent is set on the cylinder discharges the gap slot of usefulness and just can reduce overcompression and fully improve the coefficient of performance thereby not be used in.
To achieve these goals, hermetic rotary compressor of the present invention has in seal casinghousing: motor part; Cylinder, it will be accommodated by the rotary compressor structure portion that running shaft is connected with this motor part, and described rotary compressor structure portion forms cylinder chamber; The the 1st and the 2nd lid member, they are located on the described cylinder both ends of the surface and cover described cylinder chamber; And the roller and the blade of pressing chamber and suction chamber will be divided in the described cylinder chamber, at least one side at the described the 1st and the 2nd lid member is formed with the tap hole that the refrigeration agent after the compression in described cylinder chamber is discharged, with the discharge volume of described cylinder chamber be made as A, when described pressing chamber sectional area when described blade is positioned at lower dead centre is made as B, if the sectional area of described tap hole is made as C, then the sectional area C of this tap hole satisfies:
200≤A/C≤280
C/B≤0.15
And the length of described tap hole is smaller or equal to 3mm, described tap hole towards the area of cylinder chamber more than or equal to 87% of the sectional area of tap hole, described cylinder does not have the gap slot that refrigeration agent is discharged usefulness.
Adopt the present invention, can improve the coefficient of performance and improve compression performance, in addition, do not have drop phenomenon in cylinder chamber of damage expulsion valve or foreign matter, can prevent the fault that produces because of these.
Description of drawings
Fig. 1 is the refrigerating circulatory device of expression one embodiment of the invention reaches the hermetic rotary compressor that is had on this refrigerating circulatory device a diagrammatic sketch.
Fig. 2 is the sectional elevation of compression mechanical part of the hermetic rotary compressor of presentation graphs 1.
Fig. 3 be the eliminating volume A of cylinder chamber of compression mechanical part of presentation graphs 2 and tap hole each area C A/C than with the relation of COP.
Fig. 4 is the diagrammatic sketch that does not promptly depart from the relation of the ratio of area of part and COP in the sectional area of tap hole of compression mechanical part of presentation graphs 2 towards cylinder chamber's part.
Fig. 5 is the blade of compression mechanical part of presentation graphs 2 and the roller tap hole sectional area C when being positioned at lower dead centre with respect to the diagrammatic sketch of the relation of the ratio C/B of pressing chamber sectional area B and COP.
Fig. 6 is the diagrammatic sketch that the operating frequency of the compression mechanical part of Fig. 2 and performance COP relation are compared with conventional art.
Fig. 7 is the generation frequency of expression air conditioning load and the diagrammatic sketch of the operating frequency of the compressor of this moment.
The diagrammatic sketch of noise properties when Fig. 8 is the expression air-conditioning.
Fig. 9 is the tap hole of compression mechanical part of presentation graphs 2 and the diagrammatic sketch of expulsion valve relation.
Figure 10 is the diagrammatic sketch of hermetic rotary compressor major component of the single casing of expression the present invention another example.
Figure 11 is the tap hole of expression conventional art and the diagrammatic sketch of expulsion valve relation.
Embodiment
Below, present invention will be described in detail with reference to the accompanying.
(the 1st embodiment)
Fig. 1 is the diagrammatic sketch of refrigerating circulatory device with hermetic rotary compressor of the present invention the 1st embodiment.
Refrigerating circulatory device has hermetic rotary compressor 1, condenser 50, expansion gear 60 and vaporizer 70.Hermetic rotary compressor 1 is a two-cylinder type, has seal casinghousing 1a.Taken in motor part 2 and rotary compressor structure portion 3 in the seal casinghousing 1a, motor part 2 is connected by the running shaft 4 with eccentric part 4a, 4b with rotary compressor structure portion 3.
Motor part 2 comprises rotor 2a and stator 2b, also the brushless DC synchronous motor that is driven by frequency variator, AC motor or by the source power supply drive electric motor.
Bottom storage at seal casinghousing 1a has refrigerating machine oil 40.As refrigerating machine oil 40, be the occasion of HFC refrigeration agent at refrigeration agent, use polyatomic alcohol polybasic alcohol ester oil or ethers oil (according to the refrigeration agent kind, also mineral oil, alkyl phenyl ring oil, PAG and fluorine class oil).
Rotary compressor structure portion 3 comprises the 1st compression mechanical part 3a and the 2nd compression mechanical part 3b, and each compression mechanical part 3a, 3b have the cylinder 6a, the 6b that form the 5a of cylinder chamber, 5b also as shown in Figure 2.In the 5a of cylinder chamber, 5b, be provided with the roller 7a, the 7b that carry out eccentric rotation (revolution).Be equipped with blade 10a, 10b in cylinder 6a, 6b, its outer circumferential face with roller 7a, 7b contacts and moves back and forth, the 5a of cylinder chamber, 5b are separated into suction chamber 8a, 8b and pressing chamber 9a, 9b.
The 5a of cylinder chamber of the 1st compression mechanical part 3a is covered by main bearing 11 and the dividing plate 12 as the lid member, and the 5b of cylinder chamber of the 2nd compression mechanical part 3b is covered by supplementary bearing 13 and the dividing plate 12 as the lid member.On main bearing 11 and supplementary bearing 13, be respectively equipped with tap hole 14a, 14b and expulsion valve 15a, 15b.Different with the conventional art example on cylinder 6a, 6b, be not provided with gap slot.
The facial discharge tube 16 that compression refrigerant gas is discharged that is connected with is connected with suction pipe 17 and storage 18 in the side of seal casinghousing 1a lower side on seal casinghousing 1a.
Be located at the tap hole 14a on main bearing 11 and the supplementary bearing 13, the diameter of 14b, select optimum diameter according to the eliminating volume of each 5a of cylinder chamber, 5b, the whole or major part of its area is set as towards the 5a of cylinder chamber, 5b.
Below, size and the position of described tap hole 14a, 14b described.
A/C when Fig. 3 is respectively getting rid of each sectional area that volume is made as A, evacuation aperture 14a, 14b and being made as C of the expression 5a of cylinder chamber, 5b than with the coefficient of performance (below be called COP.COP is the abbreviation of the coefficient of performance " coefficientof performance ") relation.Test conditions is as follows.
Condensing temperature: 26.5 °,
The preceding temperature of dress valve expands: 23.0 °,
Evaporating temperature: 3.5 °,
Inlet temperature: 7.5 °,
Get rid of volume: 11cc.
As can be seen from Figure 3, have the hermetic rotary compressor of the conventional art of gap slot, the A/C ratio be near 170 COP for maximum.On the contrary, the hermetic rotary compressor of the present invention of cylinder 6a, 6b non-notch groove, A/C are than in 200～280 scope, and COP improves than the hermetic rotary compressor of the conventional art with gap slot.
In addition, if A/C is than being that the ratio of tap hole becomes big less than 200, then the tap hole ratio of getting rid of the invalid volume of volume with respect to cylinder chamber becomes big, and COP descends because of expansion-loss again.On the contrary, if the A/C ratio is greater than 280, and then tap hole is too small, and the stream loss becomes big, COP decline.
Therefore, the A/C of the hermetic rotary compressor of the present invention of the last non-notch groove of cylinder 6a, 6b compares with the hermetic rotary compressor of conventional art than the scope that is made to 200～280, can improve COP.
Fig. 4 represent with respect to the sectional area of tap hole 14a, 14b not towards the ratio of the area of the 5a of cylinder chamber, 5b (exposing) and the relation of COP from the 5a of cylinder chamber, 5b.
As can be seen from Figure 4, for the present invention of non-notch groove on cylinder 6a, 6b, certainly along with it does not become big and its flow path resistance becomes big towards the area ratio of tap hole 14a, the 14b of the 5a of cylinder chamber, 5b, especially, if surpass 13%, COP sharply descends.
Therefore, on cylinder 6a, 6b among the present invention of non-notch groove, by will be not making 13% towards the area ratio of the tap hole of the 5a of cylinder chamber, 5b, in other words, tap hole 14a, 14b are made more than 87% of tap hole sectional area towards the ratio of the area of the 5a of cylinder chamber, 5b, then can improve COP.
Fig. 5 represents as blade 10a, 10b and roller 7a, when 7b is in lower dead centre (position shown in Figure 2), the ratio C/B of the sectional area B of the sectional area C of tap hole 14a, 14b and the pressing chamber 9a, the 9b that are surrounded by inwall and blade 10a, the 10b of roller 7a, 7b periphery, the 5a of cylinder chamber, 5b and the relation of COP.
As can be seen from Figure 5, by the C/B ratio is made smaller or equal to 15%, then can improve COP.
In addition, the length of tap hole 14a, 14b is during smaller or equal to 3mm, can obtain higher COP.
In addition, preferably, make smaller or equal to 5 ° and improve performance by the angle θ (θ is 0 ° among Fig. 2) that straight line X and straight line Y are constituted, and straight line X is the straight line that the center A with pressing chamber 9a, 9b side end 21a, 21b and the 5a of cylinder chamber, the 5b of blade accommodating groove 20a, the 20b of cylinder 6a, 6b couples together, and straight line Y is the straight line that the center A with the point of the blade accommodating groove 20a of tap hole 14a, 14b, 20b side and the 5a of cylinder chamber, 5b couples together.
When the diameter with tap hole 14a, 14b be made as dmm, when the sealed width of roller 7a, 7b is made as Lmm, by making d+0.1≤L, as can be known: can prevent that leak in all spaces in refrigeration agent way roller 7a, the 7b, can improve performance.
In order to increase the sealed width L of roller 7a, 7b, preferably do the chamfering of all ends in roller 7a, the 7b little.
On the other hand, slippage loss becomes big with the sealed width of roller 7a, 7b with being directly proportional.Therefore, the chamfering towards interior all ends of main bearing 11 and supplementary bearing 13 sides that preferably only will form tap hole 14a, the 14b of roller 7a, 7b is made the chamfering less than the opposing party end.
For the sealing of keeping roller 7a, 7b, prevent that the inside all spaces of refrigeration agent from leaking, it is favourable using the refrigerating machine oil that viscosity is high to a certain degree, as refrigeration agent, when using HFC refrigeration agent (R410A, R407C, R404A), viscosity is 74mm/s when using 40 ℃
2Polyatomic alcohol polybasic alcohol ester oil as the hermetic rotary compressor of refrigerating machine oil, its performance is better than other hermetic rotary compressor.
In addition, the hermetic rotary compressor of twin-tub type can not be done the offset of eccentric part too big because of the restriction on being made.Its result, the internal diameter of cylinder chamber and the sealed width of roller the cylinder chamber's internal diameter than the hermetic rotary compressor of single cylinder type usually are big, so implement said structure easily.
Fig. 6 represents the hermetic rotary compressor of the present invention and the operating frequency of the hermetic rotary compressor of the conventional art with gap slot and the relation of COP of said structure.
Refrigeration agent uses R410A, and viscosity is 74mm/s when having used 40 ℃ as refrigerating machine oil
2Polyatomic alcohol polybasic alcohol ester oil.
As can be seen from Figure 6, hermetic rotary compressor of the present invention is compared with the hermetic rotary compressor of conventional art in its performance of gamut roughly and is improved.Especially when operating frequency is low, remarkable result is arranged.
Fig. 7 represents the generation frequency of air conditioning load and the operating frequency of the compressor of this moment.
In the dwelling house in recent years that airtight, high heat insulationization of height constantly develops, compressor often turns round in the low scope of operating frequency, therefore, in the low part of operating frequency, there is the hermetic rotary compressor of the present invention of remarkable result can obtain significantly to economize the energy effect.
Fig. 8 represents noise properties.As can be seen from Figure 8, hermetic rotary compressor of the present invention also can reduce the effect that produced and compares with the hermetic rotary compressor of conventional art and to have the reduction effect for noise by expansion-loss again.
Fig. 9 represents the relation of tap hole 14a, 14b and expulsion valve 15a, 15b.
In the hermetic rotary compressor of the present invention, vertically act on expulsion valve 15a, 15b from the discharging refrigerant of the 5a of cylinder chamber, 5b, the result does not have the masterpiece of torsional direction to be used for expulsion valve 15a, 15b, can improve reliability.
(the 2nd embodiment)
Table 1 expression has the 1st above-mentioned example structure, makes the eliminating volume of the 5a of cylinder chamber, 5b certain and the D/E of the diameter D of the 5a of cylinder chamber, 5b and height E is compared relation with COP than the D/E of the occasion that is changed.
Table 1
| D/E | COP |
| 1.7 | 0.85 |
| 1.8 | 0.91 |
| 1.9 | 0.96 |
| 2.0 | 0.97 |
| 2.2 | 0.98 |
| 2.4 | 0.99 |
| 2.6 | 1.00 |
| 2.8 | 1.00 |
As known from Table 1, D/E is than obtaining higher COP more than or equal to 1.9 o'clock.Especially, D/E is greater than obtaining the highest COP greater than 2.6 o'clock.
(the 3rd embodiment)
Figure 10 represents the major component of the hermetic rotary compressor of single cylinder type.
Cover the 81a of cylinder chamber ground in the both ends of the surface of cylinder 81 and set main bearing 82 and the supplementary bearing 83 that covers member as the 1st and the 2nd, on these main bearings 82 and supplementary bearing 83, be respectively equipped with tap hole 84,85 and expulsion valve 86,87.The tap hole that illustrates in tap hole 84,85 and the foregoing description constitutes equally.
In this 3rd embodiment, owing on main bearing 82, supplementary bearing 83, be respectively equipped with tap hole 84,85, so big or small less the getting final product of 1 tap hole.Therefore, though the sealed width of the diameter (internal diameter) of the 81a of cylinder chamber and roller form usually in the little single cylinder type than the hermetic rotary compressor of twin-tub type, also can implement the structure of above-mentioned tap hole 84,85 easily.
The present invention is not limited to the foregoing description, the implementation phase, in the scope that does not break away from its aim, can be out of shape and specialize structural element.In addition, in the above-described embodiments, can carry out various changes by a plurality of structural elements are carried out appropriate combination and implement.For example, also can from all structural elements that the above embodiments are represented, delete some structural elements.In addition, also different embodiments' structural element can be given appropriate combination.
Claims (4)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006019650A JP4909597B2 (en) | 2006-01-27 | 2006-01-27 | Hermetic rotary compressor and refrigeration cycle apparatus |
| JP2006-019650 | 2006-01-27 | ||
| JP2006019650 | 2006-01-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101008389A true CN101008389A (en) | 2007-08-01 |
| CN101008389B CN101008389B (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100077658A Active CN101008389B (en) | 2006-01-27 | 2007-01-26 | Hermetic rotary compressor and refrigeration cycle device having hermetic rotary compressor |
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|---|---|
| JP (1) | JP4909597B2 (en) |
| CN (1) | CN101008389B (en) |
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| CN107120275A (en) * | 2017-06-29 | 2017-09-01 | 广东美芝制冷设备有限公司 | Compression mechanism and rotary compressor |
| CN109958621A (en) * | 2017-12-25 | 2019-07-02 | 上海海立电器有限公司 | A kind of duplex cylinder compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007198319A (en) | 2007-08-09 |
| JP4909597B2 (en) | 2012-04-04 |
| CN101008389B (en) | 2010-05-19 |
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