CN103452844A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN103452844A CN103452844A CN2012101816380A CN201210181638A CN103452844A CN 103452844 A CN103452844 A CN 103452844A CN 2012101816380 A CN2012101816380 A CN 2012101816380A CN 201210181638 A CN201210181638 A CN 201210181638A CN 103452844 A CN103452844 A CN 103452844A
- Authority
- CN
- China
- Prior art keywords
- eccentric
- rotary compressor
- piece
- counter balance
- balance pocket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The invention provides a rotary compressor. The rotary compressor comprises a motor and a compression mechanism which are arranged in a sealed shell, wherein the motor comprises a stator and a rotor; the compression mechanism comprises an air cylinder with a compression cavity, and a piston and a slide sheet which are arranged in the compression cavity; a main bearing and a secondary bearing for supporting an eccentric crank shaft are arranged on the two sides of the air cylinder respectively; the eccentric crank shaft comprises a main shaft fixedly provided with the rotor, an eccentric shaft for driving the piston to do eccentric rotation and a secondary shaft; the eccentric crank shaft is provided with a middle balance block; the gravity center of the middle balance block is eccentric from that of the main shaft; the middle balance block is arranged between the eccentric shaft and the secondary shaft; the compression mechanism is internally provided with a balance cavity for containing the middle balance block; the rotor and the eccentric crank shaft are internally provided with a balance mechanism for counteracting a centrifugal force acting on the eccentric shaft and a centrifugal force acting on the middle balance block. The rotary compressor has the characteristics of simple and reasonable structure, low manufacturing cost, small vibration and stable performance.
Description
Technical field
The present invention relates to a kind of compressor, particularly a kind of rotary compressor, relevant with the improved efficiency technology with vibration, the reliability of the single cylinder rotary compressor that uses variable-frequency motor.
Background technique
Variable-frequency type single cylinder rotary compressor has the advantages that rotating speed is controlled, and is conducive to efficiency and temperature and controls.But the centrifugal force that is fixed on epitrochanterian equilibrium block is excessive, due to perturbing of the eccentric crankshaft in running up, cause producing the problem of abrasion, vibration increase and the compressor work Efficiency Decreasing of main shaft.Solution for this problem is to adopt duplex-cylinder rotary compressor.With the single cylinder rotary compressor, compare, the shortcoming of duplex-cylinder rotary compressor is the increase due to the slip component, and slippage loss and gas leakage loss also can be along with increases, and also can increase manufacture cost.
The rotor compressor of the subsidiary longitudinal balance piece of patent documentation 3USP5230616 ROTARY COMPRESSOR WITH SHAFT BALANCERS.
In patent documentation 1, when the running up of 120rps, at the equilibrium block centrifugal force of the upper and lower end configuration of rotor, be 4 times of constant speed power supply 60rps.This result is: due to eccentric crankshaft perturb and eccentric crankshaft and bearing between the surface pressure that produces reach maximum, be easy to produce the eccentric crankshaft abrasion, the vibration of compressor is also in obvious increase.And, in order to improve the rigidity of eccentric crankshaft, such as increasing the diameter of axle, will increase so slippage loss, produce the problem that efficiency reduces.
Reflect on oneself this problem, use for reference patent documentation 2 and patent documentation 3: consider to be equipped with the countershaft equilibrium block on the countershaft of eccentric crankshaft, namely, as the first equilibrium block in patent documentation 2 and as the first balancer in patent documentation 3, reduce the equilibrium block centrifugal force of rotor.
But, as implemented by above method, assembling is fixed on the equilibrium block on countershaft, due to the vibration run up, can produce the loosening problem of equilibrium block.In addition, due to the length of needs lengthening countershaft, the centrifugal force of the motor rotor balance weight that the centroidal distance of the equilibrium block on eccentric shaft and countershaft also can become greatly thereupon, needs are alleviated has adverse effect.For the interference of the oil that prevents countershaft equilibrium block and oil sump, be necessary at the underpart of supplementary bearing configuration equilibrium block cover plate, countershaft equilibrium block design space littlely, cause the design restriction to increase.
In addition, in duplex-cylinder rotary compressor, the centrifugal force of 2 eccentric shaft effects is equated, and the centroidal distance of 2 eccentric shafts is shorter, so be conducive to alleviate motor, sends out balancing rotor piece centrifugal force.But duplex-cylinder rotary compressor must be equipped with the component such as 2 groups of suctions and drain passageway, 2 groups of pistons and slide plate.Therefore, duplex-cylinder rotary compressor is compared with above-mentioned single cylinder rotary compressor, is not singly that fabricating cost increases, but also has the large shortcoming that increases slippage loss and gas leakage loss.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, fabricating cost is low, it is little to vibrate, the rotary compressor of stable performance, to overcome deficiency of the prior art.
A kind of rotary compressor by this purpose design, comprise motor and compressing mechanism in the housing that is arranged on sealing; Motor comprises stator and rotor; Compressing mechanism comprises cylinder with compression chamber, is arranged on piston and slide plate in compression chamber; For supporting the main bearing of eccentric crankshaft and the both sides that supplementary bearing is separately positioned on cylinder; Eccentric crankshaft comprises the main shaft that is fixed with rotor, eccentric shaft, the countershaft that driven plunger is made eccentric rotary, its structure characteristic is to be provided with the intermediate equilibria piece on eccentric crankshaft, the center of gravity of this intermediate equilibria piece is compared in eccentric position with the center of gravity of main shaft, the intermediate equilibria piece is arranged between eccentric shaft and countershaft, be provided with in compressing mechanism for taking in the counter balance pocket of intermediate equilibria piece, be provided with the centrifugal force that makes to act on eccentric shaft and act on the balanced controls that the centrifugal force of intermediate equilibria piece is cancelled each other in rotor and eccentric crankshaft.
Described balanced controls are included between cylinder and supplementary bearing and are provided with the equilibrium block cover plate, and counter balance pocket is arranged in the equilibrium block cover plate.
On described equilibrium block cover plate, be provided with for the center hole through eccentric shaft, this center hole communicates with counter balance pocket; Also be provided with undercut groove and intercommunicating pore on the equilibrium block cover plate, undercut groove is arranged on the periphery of counter balance pocket, and intercommunicating pore communicates with undercut groove, and this intercommunicating pore is by being arranged on the inside of the channel connection housing on cylinder and main bearing.
Be provided with tap hole on described equilibrium block cover plate, be provided with on this tap hole for closing the expulsion valve of this tap hole.
Described balanced controls are included between supplementary bearing and cylinder and are provided with dividing plate, be provided with counter balance pocket in supplementary bearing, baffle for separating compression chamber and counter balance pocket, be provided with undercut groove on supplementary bearing, this undercut groove is communicated with counter balance pocket and is arranged on the passage on cylinder and main bearing, and counter balance pocket is by the inside of undercut groove and channel connection housing.
Be provided with tap hole on described dividing plate, be provided with on this tap hole for closing the expulsion valve of this tap hole.
Described eccentric crankshaft and intermediate equilibria piece are wholely set.
Described counter balance pocket communicates with the inside of housing by the passage that is arranged on compressing mechanism and be opened on the inside of housing.
Be provided with tap hole between described compression chamber and counter balance pocket, be provided with on this tap hole for closing the expulsion valve of this tap hole.
Described motor is the variable-frequency motor of the rotational speed of conversion rotor.
The present invention is by the intermediate equilibria piece is set between eccentric shaft and countershaft, and the sealing of intermediate equilibria piece is accommodated in counter balance pocket.Centrifugal force due to the intermediate equilibria piece, not only because the centrifugal force with the former of eccentric shaft and piston thereby generation is very approaching, and because the center of gravity spacing L1 between the two is shorter, therefore the centrifugal force on can decrease balancing rotor piece, thereby both can suppress cost increases, also can, under the prerequisite that does not reduce compressor efficiency, realize the low vibration equal with duplex-cylinder rotary compressor, the balanced design of high reliability.
The present invention, by alleviating the centrifugal force of balancing rotor piece, can pass through the path of eccentric crankshaft, realizes the improved efficiency of compressor.And, on rotary compressor in the past, because the design alteration component are fewer, almost can use all component, its Applicable scope is wider, and versatility is also more intense.
That the present invention has is simple and reasonable, fabricating cost is low, it is little to vibrate, the characteristics of stable performance.
The accompanying drawing explanation
Fig. 1 is in embodiments of the invention 1, the longitdinal cross-section diagram of the inside of rotary compressor and refrigeration cycle diagram.
Fig. 2 is in embodiment 1, the longitudinal section of compressing mechanism and intermediate equilibria piece.
Fig. 3 is in embodiment 1, the plan view of eccentric crankshaft.
The right elevation that Fig. 4 is Fig. 3.
Fig. 5 is in embodiment 1, the plan view of equilibrium block cover plate.
Fig. 6 is the axial sectional view of overlooking of Fig. 5.
Fig. 7 is in embodiment 1, the longitudinal section of compressing mechanism and equilibrium block cover plate.
The force analysis figure that Fig. 8 is embodiments of the invention 1.
Fig. 9 is the force analysis figure in patent documentation 2.
Figure 10 is the force analysis figure in patent documentation 1.
Figure 11 is in embodiments of the invention 2, the longitudinal section of compressing mechanism and counter balance pocket.
Figure 12 is in embodiments of the invention 3, the longitudinal section of compressing mechanism and counter balance pocket.
In figure: R is rotary compressor, M is motor, P is compressing mechanism, C is condenser, V is expansion valve, E is vaporizer, 2 is housing, 3 is outlet pipe, 7 is tap hole, 10 is stator, 15 is rotor, 16 is the upper rotor part equilibrium block, 20 is cylinder, 21 is compression chamber, 23 is main bearing, 25 is exhaust silencer, 27 is supplementary bearing, 30 is the equilibrium block cover plate, 31 is counter balance pocket, 31a is screw hole, hole centered by 32, 33 is intercommunicating pore, 34 is undercut groove, 35 is eccentric crankshaft, 35a is main shaft, 35c is countershaft, 36 is the intermediate equilibria piece, 37 is push stopping part, 38 is dividing plate, 40 is eccentric shaft, 41 is slide plate, 45 is piston, 46 is expulsion valve.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Referring to Fig. 1, be illustrated in interior motor M and compressing mechanism P and the freezing cycle device thereof of seal casinghousing 2 of rotary compressor R.Shown in Fig. 2 is the detailed content and the relation that is configured in the upper rotor part equilibrium block 16 on rotor 15 of the Equilibrator of compressing mechanism P.
In Fig. 1, the motor M of frequency conversion is comprised of the stator 10 on the inwall that is fixed on housing 2 and the rotor 15 be fixed on eccentric crankshaft 35.The upper end of rotor 15 is equipped with upper rotor part equilibrium block 16.Compressing mechanism P comprises cylinder 20, be fixed on the both sides of cylinder 20 and slide support main bearing 23 and the supplementary bearing 27 of eccentric crankshaft 35 and be arranged on cylinder 20 and supplementary bearing 27 between equilibrium block cover plate 30.Compressing mechanism P is fixed on the inwall of housing 2 by the periphery of cylinder 20.Storing refrigerator oil (below be referred to as " oil ") (not shown) between the bottom surface of compressing mechanism P and housing 2.
The pressurized gas of discharging from the outlet pipe 3 of the configuration of the upper end at housing 2 become low-pressure gas by condenser C, expansion valve V successively and pass through liquid-storage container A, are drawn into compression chamber 21 from suction pipe 9 from vaporizer E.In cylinder 20, compressed pressurized gas are to flow in exhaust silencer 25 discharger (figure does not show) from being provided in main bearing 23, then flow out to the inside of housing 2.
Piston 45 and slide plate 41 be equipped with in Fig. 2, on the compression chamber 21 of cylinder 20.Eccentric crankshaft 35 comprises main shaft 35a, eccentric shaft 40, intermediate equilibria piece 36 and countershaft 35c, and intermediate equilibria piece 36 is between eccentric shaft 40 and countershaft 35c, and it is upper that rotor 15 is fixed on main shaft 35a, and eccentric shaft 40 driven plunger 45 are made eccentric operating.
The intermediate equilibria piece 36 that is configured to one with eccentric crankshaft 35 is to be incorporated in the counter balance pocket 31 be provided on equilibrium block cover plate 30, and intermediate equilibria piece 36 turns round with eccentric crankshaft 35 simultaneously.On the upper-end surface that is arranged on equilibrium block cover plate 30 of sliding in the lower end surface of piston 45.Equilibrium block cover plate 30 is to manufacture with the material of foundry goods and sintered alloy.
The push stopping part 37 that forms at the downside of intermediate equilibria piece 36 is to carry out the load-bearing of sliding support eccentric crankshaft 35 and rotor 15 on supplementary bearing 27.In addition, in the carrying and running of compressor, do not touch the top of counter balance pocket 31 in order to ensure the upper-end surface of intermediate equilibria piece 36, dwindle the gap between the plane of the upper end of eccentric shaft 40 and main bearing 23, thereby control the up and down scope of eccentric crankshaft 35.
As described above, the intermediate equilibria piece 36 be equipped with at the downside of the eccentric shaft 40 of eccentric crankshaft 35 and the counter balance pocket 31 of taking in intermediate equilibria piece 36 are features of the present invention.The present invention is in order significantly to lower the centrifugal force of the upper rotor part equilibrium block 16 be fixed on rotor 15, and is provided with intermediate equilibria piece 36.
Referring to Fig. 3-Fig. 4, it is the details drawing of eccentric crankshaft 35.Usually, eccentric crankshaft 35 is to use the rigidity of spherical blacklead cast iron etc. and abrasion performance material preferably.The intermediate equilibria piece 36 of the circle formed between eccentric shaft 40 and countershaft 35c, the relative offset r0 of eccentric shaft 40, it is large that the offset r1 of intermediate equilibria piece 36 is about 2 times of r0.
Size L1 between the center of gravity of eccentric shaft 40 and intermediate equilibria piece 36 is less than the center size of 2 eccentric shafts of common duplex-cylinder rotary compressor, the very large effect of performance in the quality lightweight of balancing rotor piece 16 described later.And the profile of intermediate equilibria piece 36 is circular structures, thus easily processing, but not necessarily leave no choice but select circle, also can select various shapes.
Referring to Fig. 5-Fig. 6, it is the details drawing of equilibrium block cover plate 30.Columnar equilibrium block cover plate 30 comprises counter balance pocket 31, in counter balance pocket 31, offers center hole 32, is configured in the undercut groove 34 of the periphery of counter balance pocket 31, the intercommunicating pore 33 be communicated with undercut groove 34 and four screw hole 31a.The internal diameter of center hole 32 is basic identical with eccentric light 40 external diameter, and during assembling, considering to want can be through eccentric shaft 40.
During compressing mechanism P assembling, the center hole 32 of equilibrium block cover plate 30 is through eccentric shaft 40 time, and the lower end surface of equilibrium block cover plate 30 namely, with the contacted surface of contact of supplementary bearing, can be passed through smoothly under the prerequisite of not interfering equilibrium block 36.In embodiment 1, with respect to center hole 32, counter balance pocket 31 center has some bias, and this bias means with e.
Referring to Fig. 7, be that equilibrium block cover plate 30 is fixed on to the ssembly drawing between cylinder 20 and supplementary bearing 27.The intercommunicating pore 33 of the undercut groove 34 of the periphery of connection equilibrium block cover plate 30, be to be communicated with the longitudinal hole on cylinder 20 and main bearing 23 equally, and carry out opening in the upper end of main bearing 23.Therefore, counter balance pocket 31 is communicated with the passage of the upper end of main bearing 23 at housing 2 inside openings.
After longitudinal hole on longitudinal hole on cylinder 20 and main bearing 23 is communicated with, form passage.
When rotary compressor R shuts down, in counter balance pocket 31, by refrigerant, surrounded, or oil immersion enters.And on-stream, the oil of lubricated eccentric crankshaft 35 can leak into counter balance pocket 31.Under this condition, the above-mentioned passage towards housing 2 inside openings has become liquid coolant and oily discharge route.That is,, when compressor start and running, the liquid coolant of counter balance pocket 31 and oil, through the above-mentioned passage of the intermediate equilibria piece 36 in running, are discharged in housing 2.In addition, because the pressure in above-mentioned channel balance chamber 31 is identical with the interior pressure of conventional lower shell body 2, so eccentric crankshaft 35 can continue normal lubricated action.
Next, introduce effect and the effect of embodiment 1 intermediate equilibria piece 36.In addition, technological scheme provided by the invention and technological scheme are in the past compared and estimate.
As shown in Figure 2, the unbalance mass, m0 that eccentric crankshaft 35 produces is the total quality of eccentric shaft 40 and piston 45.
The centrifugal force of this unbalance mass, m0 is F0, and F0=m0 * r0 * ω is arranged
2; Wherein, r0 is the offset of eccentric shaft 40 as shown in Figure 3, and ω is the angular velocity of eccentric crankshaft 35.
The centrifugal force of intermediate equilibria piece 36 is F1, and F1=m1 * r1 * ω is arranged
2;
The centrifugal force of upper rotor part equilibrium block 16 is F2, and F2=m2 * r2 * ω is arranged
2.
Wherein, m1 and m2 are respectively the quality of intermediate equilibria piece 36 and upper rotor part equilibrium block 16, r1 and r2 be eccentric crankshaft 35 center respectively and the distance between the center of gravity of intermediate equilibria piece 36 and upper rotor part equilibrium block 16.
The balanced type of centrifugal force F0, F1 and F2 is as follows:
F0-F1-F2＝0
F1×L1-F2×L2＝0
Release thus:
F1=F0 * L2/ (L2+L1) formula one;
F2=F0 * L1/ (L2+L1) formula two.
As shown in Figure 2, L1 is the distance between the running shaft of eccentric shaft 40 and intermediate equilibria piece 36, and L2 is the distance between the running shaft of eccentric shaft 40 and upper rotor part equilibrium block 16.
In addition, F0, F1 and F2 are reciprocal centrifugal force.
As described in patent documentation 1, the centrifugal force F0 on the mode in the past that lower rotor part equilibrium block (F1) and upper rotor part equilibrium block (F2) configure respectively on the lower end of rotor and upper end and the relation of F1 and F2 are as follows:
F1=F0 * L2/ (L2-L1) formula three;
F2=F0 * L1/ (L2-L1) formula four.
Therefore relative F0, F1 is reciprocal centrifugal force, F2 is equidirectional centrifugal force.
As shown in patent documentation 2 and patent documentation 3, configuration countershaft equilibrium block (centrifugal force F1) on countershaft, balancing rotor piece (centrifugal force F2) is configured in the technological scheme in the past of the upper end (patent documentation 2) of rotor or rotor lower end (patent documentation 3), and the relation formula of F0, F1 and F2 is to be identical with formula one and formula two in embodiment 1.
But L2>patent documentation 3 that patent documentation 2 configures in the rotor upper end is at the L2 of rotor lower end configuration.
Next, the balanced type based on above-mentioned illustrates the comparative result of the present invention and conventional art again in conjunction with Fig. 8-Figure 10.Shown in the present embodiment 1, the single cylinder rotary compressor with intermediate equilibria piece means with Fig. 8; The single cylinder rotary compressor that has the countershaft equilibrium block in patent documentation 2 means with Fig. 9, refers to patent documentation 2; Mean with Figure 10 without intermediate equilibria piece or countershaft equilibrium block, the single cylinder rotary compressor in the past that configures respectively 2 balancing rotor pieces in lower end and the lower end of rotor, refer to patent documentation 1.
At this, r0 is from the center of eccentric crankshaft to the centroidal distance of unbalance mass, m0; R1 is the centroidal distance of the center of eccentric crankshaft to intermediate equilibria piece, countershaft equilibrium block or lower rotor part equilibrium block; R2 is the size of the centroidal distance of the supreme balancing rotor piece in the center of eccentric crankshaft, and in these areas, these three figure have general character.
At first, Fig. 8 of the present invention and Fig. 9 are in the past compared, due to the L1 in the L1<Fig. 9 in Fig. 8, the L2 in the L2=Fig. 9 in Fig. 8, so (L2+L1) in (the L2+L1)<Fig. 9 in Fig. 8.Therefore, in formula one, the F1 in the F1>Fig. 9 in Fig. 8.On the contrary, according to formula two, the F2 in the F2<Fig. 9 in Fig. 8.Therefore, Fig. 8 can dwindle centrifugal force F2.In addition, as the intermediate equilibria piece wanted to the wonderful works reason than the design freedom of countershaft equilibrium block, infers the r1 in the r1>Fig. 9 in Fig. 8, the quality m1 of the countershaft equilibrium block of the quality m2 of the intermediate equilibria piece of Fig. 8<Fig. 8 so.
Secondly, Fig. 8 of the present invention and Figure 10 are in the past compared, by formula two, formula one, formula four and formula three, the conclusion of the F1 in the F 2<Figure 10 in the F2<Figure 10 in Fig. 8 just need not be explained also and understand.About conclusion, its purpose is for reducing balancing rotor centrifugal force, and the present invention (Fig. 8) mode (Figure 10) relatively in the past has very large advantage.In addition, owing to comparing mode (Fig. 9) in the past, the present invention (Fig. 8) also has superiority, and the provable eccentric crankshaft brought due to the reason of balancing rotor piece centrifugal force perturbs and prevents aspect, and the present invention (Fig. 8) has remarkable result.
In addition, in embodiment 1, can as patent documentation 3, at the lower end of rotor configuration balancing rotor piece, replace upper rotor part equilibrium block 16.Due to this change, the L2 size shortens, and causes the weight increase of balancing rotor piece, the weight of intermediate equilibria piece 36 to reduce.But, in embodiment 1, even at the lower end of rotor configuration balancing rotor piece, the L1 of the L1 of intermediate equilibria piece<countershaft equilibrium block, therefore, and the F2 in the F2<patent documentation 3 in embodiment 1, embodiment 1 has superiority.
In addition, in embodiment 1, for replacing the upper rotor part equilibrium block 16 fixing in the upper end of rotor, even for example be fixed on the upper end portion of main shaft 35a, also can obtain the technique effect equal with above-mentioned disclosed technological scheme.In addition, replace upper rotor part equilibrium block 16, can be by autologous weight, also can produce equal centrifugal force such as the adjustment of lamination, rotor magnet etc.Mean that, because the weight of upper rotor part equilibrium block 16 is significantly dwindled, the design alternative scheme of upper rotor part equilibrium block 16 can increase.
As described above, because the present invention significantly alleviates the amount of deflection of eccentric crankshaft 35 by the centrifugal force of balancing rotor piece, can solve the basic assignment of single cylinder rotary compressor in the past.Because eccentric crankshaft 35 and intermediate equilibria 36 are integrally formed, single assembling is simple, becoming flexible and coming off while more not worrying running up, and it has very high reliability.In addition, because intermediate equilibria piece 36 is that sealing is accommodated in equilibrium block cover plate 30, so the noise in the time of seldom can producing running.
But, not singly to be integrally formed with eccentric crankshaft, as described in patent documentation 2 and patent documentation 3, as the equilibrium block of individual components, by purport of the present invention, also can assemble the assigned position that is fixed on eccentric crankshaft 35.For this situation, because eccentric shaft 40 is the center holes that there is no need by equilibrium block cover plate 30, therefore allowing the internal diameter of center hole 32 is identical with the external diameter of countershaft 35c.
And as Patent Document 1, in waving the shape rotary compressor, piston and slide plate can produce unbalance mass,, increase centrifugal force F0.But the present embodiment 1 can solve about such problem, and can bring into play more effectively effect.
In addition, embodiment 2 can omit the biasing e of the counter balance pocket 31 adopted in embodiment 1.Draw thus, the external diameter expansion along with intermediate equilibria piece 36, can increase centrifugal force easily, is applicable to the design of large-scale rotary compressor.And dividing plate 38 can be used the dividing plate of duplex-cylinder rotary compressor.
All the other are not stated part and see embodiment 1, repeat no more.
Embodiment 3
Embodiment 3 shown in Figure 12 is equipped with tap hole 7 and the expulsion valve 46 for closing this tap hole 7 on dividing plate 38.Pressurized gas after compressed in compression chamber 21 be from 7, one of two tap holes be through exhaust silencer 25, another is by the sequential flowing of undercut groove 34 and intercommunicating pore 33, finally to be discharged in housing 2 successively through counter balance pocket 31.This situation, be actually a counter balance pocket 31 and be used as exhaust silencer.
Like this, in embodiment 3, discharger also is installed in main bearing 23, exhaust side by side, and in the variable-frequency type rotary compressor, the Exhaust Gas amount in running up is also increasing, and is necessary to be equipped with two dischargers in the compressor of single cylinder.In embodiment 3, use such design more easily to be applied.
All the other are not stated part and see embodiment 2, repeat no more.
Claims (10)
1. a rotary compressor, comprise motor (M) and compressing mechanism (P) in the housing (2) that is arranged on sealing, motor (M) comprises stator (10) and rotor (15), compressing mechanism (P) comprises cylinder (20) with compression chamber (21), is arranged on piston (45) and slide plate (41) in compression chamber (21), for supporting the main bearing (23) of eccentric crankshaft (35) and the both sides that supplementary bearing (27) is separately positioned on cylinder (20), eccentric crankshaft (35) comprises the main shaft (35a) that is fixed with rotor (15), driven plunger (45) is made the eccentric shaft (40) of eccentric rotary, countershaft (35c), it is characterized in that on eccentric crankshaft (35) being provided with intermediate equilibria piece (36), the center of gravity of this intermediate equilibria piece (36) is compared in eccentric position with the center of gravity of main shaft (35a), intermediate equilibria piece (36) is arranged between eccentric shaft (40) and countershaft (35c), be provided with the counter balance pocket (31) for taking in intermediate equilibria piece (36) in compressing mechanism (P), be provided with the centrifugal force that makes to act on eccentric shaft (40) and act on the balanced controls that the centrifugal force of intermediate equilibria piece (36) is cancelled each other in rotor (15) and eccentric crankshaft (35).
2. rotary compressor according to claim 1, it is characterized in that described balanced controls are included between cylinder (20) and supplementary bearing (27) is provided with equilibrium block cover plate (30), and counter balance pocket (31) is arranged in equilibrium block cover plate (30).
3. rotary compressor according to claim 2, is characterized in that on described equilibrium block cover plate (30) being provided with the center hole (32) for through eccentric shaft (40), and this center hole (32) communicates with counter balance pocket (31); Also be provided with undercut groove (34) and intercommunicating pore (33) on equilibrium block cover plate (30), undercut groove (34) is arranged on the periphery of counter balance pocket (31), intercommunicating pore (33) communicates with undercut groove (34), and this intercommunicating pore (33) is by being arranged on the inside of the channel connection housing (2) on cylinder (20) and main bearing (23).
4. rotary compressor according to claim 3, is characterized in that on described equilibrium block cover plate (30) being provided with tap hole (7), is provided with the expulsion valve (46) for closing this tap hole (7) on this tap hole (7).
5. rotary compressor according to claim 1, it is characterized in that described balanced controls are included between supplementary bearing (27) and cylinder (20) is provided with dividing plate (38), be provided with counter balance pocket (31) in supplementary bearing (27), dividing plate (38) is separated compression chamber (21) and counter balance pocket (31), be provided with undercut groove (34) on supplementary bearing (27), this undercut groove (34) is communicated with counter balance pocket (31) and is arranged on the passage on cylinder (20) and main bearing (23), and counter balance pocket (31) is by the inside of undercut groove (34) and channel connection housing (2).
6. rotary compressor according to claim 5, is characterized in that on described dividing plate (38) being provided with tap hole (7), is provided with the expulsion valve (46) for closing this tap hole (7) on this tap hole (7).
7. according to the arbitrary described rotary compressor of claim 1 to 6, it is characterized in that described eccentric crankshaft (35) and intermediate equilibria piece (36) are wholely set.
8. rotary compressor according to claim 1, is characterized in that described counter balance pocket (31) communicates with the inside of housing (2) by being arranged on the upper and passage that be opened on the inside of housing (2) of compressing mechanism (P).
9. rotary compressor according to claim 1, it is characterized in that being provided with tap hole (7) between described compression chamber (21) and counter balance pocket (31), be provided with the expulsion valve (46) for closing this tap hole (7) on this tap hole (7).
10. rotary compressor according to claim 1, is characterized in that the variable-frequency motor of described motor (M) for the rotational speed of conversion rotor (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181638.0A CN103452844B (en) | 2012-06-04 | 2012-06-04 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181638.0A CN103452844B (en) | 2012-06-04 | 2012-06-04 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103452844A true CN103452844A (en) | 2013-12-18 |
| CN103452844B CN103452844B (en) | 2016-01-20 |
Family
ID=49735578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210181638.0A Active CN103452844B (en) | 2012-06-04 | 2012-06-04 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103452844B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895907A (en) * | 2014-03-07 | 2015-09-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft and compressor |
| CN109083923A (en) * | 2017-06-14 | 2018-12-25 | 上海海立电器有限公司 | Crankshaft, rolling rotor-type micro-compressor and refrigeration system |
| JPWO2021171340A1 (en) * | 2020-02-25 | 2021-09-02 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145079B2 (en) * | 1979-08-17 | 1986-10-06 | Tokyo Shibaura Electric Co | |
| US5040958A (en) * | 1988-04-11 | 1991-08-20 | Hitachi, Ltd. | Scroll compressor having changeable axis in eccentric drive |
| JP2009074412A (en) * | 2007-09-20 | 2009-04-09 | Panasonic Corp | Hermetic rotary compressor |
| CN201714667U (en) * | 2010-07-21 | 2011-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage compressor and pump partition plate thereof |
| CN102410222A (en) * | 2010-09-22 | 2012-04-11 | 广东美芝制冷设备有限公司 | Rotary compressor |
-
2012
- 2012-06-04 CN CN201210181638.0A patent/CN103452844B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145079B2 (en) * | 1979-08-17 | 1986-10-06 | Tokyo Shibaura Electric Co | |
| US5040958A (en) * | 1988-04-11 | 1991-08-20 | Hitachi, Ltd. | Scroll compressor having changeable axis in eccentric drive |
| KR920006046B1 (en) * | 1988-04-11 | 1992-07-27 | 가부시기가이샤 히다찌세이사꾸쇼 | Scroll compressor |
| JP2009074412A (en) * | 2007-09-20 | 2009-04-09 | Panasonic Corp | Hermetic rotary compressor |
| CN201714667U (en) * | 2010-07-21 | 2011-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage compressor and pump partition plate thereof |
| CN102410222A (en) * | 2010-09-22 | 2012-04-11 | 广东美芝制冷设备有限公司 | Rotary compressor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895907A (en) * | 2014-03-07 | 2015-09-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft and compressor |
| CN104895907B (en) * | 2014-03-07 | 2018-02-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Bent axle and compressor |
| CN109083923A (en) * | 2017-06-14 | 2018-12-25 | 上海海立电器有限公司 | Crankshaft, rolling rotor-type micro-compressor and refrigeration system |
| CN109083923B (en) * | 2017-06-14 | 2024-03-08 | 上海海立电器有限公司 | Crankshaft, rolling rotor type micro compressor and refrigerating system |
| JPWO2021171340A1 (en) * | 2020-02-25 | 2021-09-02 | ||
| WO2021171340A1 (en) * | 2020-02-25 | 2021-09-02 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle device |
| JP7389220B2 (en) | 2020-02-25 | 2023-11-29 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103452844B (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100504050C (en) | Rotary mechanism, machine comprising same or also including balancing mechanism | |
| CN103807174B (en) | A kind of three cylinder rolling rotor type compressors | |
| CN104165474B (en) | Ultra-low temperature refrigerating device | |
| CN104963868A (en) | Rotary compressor and crankshaft thereof | |
| US9145890B2 (en) | Rotary compressor with dual eccentric portion | |
| CN104976123A (en) | Multi-cylinder rotary compressor | |
| CN103452844B (en) | Rotary compressor | |
| CN102022325B (en) | Rotary compressor and refrigerating device with same | |
| CN105143676A (en) | Multi-cylinder rotary compressor and vapor compression refrigeration cycle device provided with multi-cylinder rotary compressor | |
| CN105452664A (en) | Scroll compressor | |
| CN205036580U (en) | Multi -cylinder rotary compressor | |
| CN201747613U (en) | Air exhaust and pressure reduction device of rotary compressor | |
| CN103410736B (en) | Low backpressure rotary compressor and there is its chiller plant | |
| CN104081055A (en) | Rotating compressor and freeze-cycle apparatus | |
| JP5766165B2 (en) | Rotary compressor | |
| CN114857005A (en) | Compressor and air conditioner | |
| CN205135998U (en) | Multi -cylinder rotary compressor and refrigerating system who has it | |
| CN203404088U (en) | Low-backpressure rotary compressor and refrigeration equipment provided with same | |
| CN205089618U (en) | Multi -cylinder rotary compressor | |
| CN104963867A (en) | Rotary compressor and crankshaft thereof | |
| CN201884281U (en) | Single-cylinder dual-rotor rotary type refrigerating compressor | |
| CN204783677U (en) | Rotary compressor and bent axle thereof | |
| CN204783676U (en) | Rotary compressor and bent axle thereof | |
| CN104533791A (en) | Compressor | |
| CN204532758U (en) | Reciprocal compressor and there is its refrigerating circulatory device |
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 |