CN205036575U - Multi -cylinder rotary compressor - Google Patents
Multi -cylinder rotary compressor Download PDFInfo
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- CN205036575U CN205036575U CN201520722293.4U CN201520722293U CN205036575U CN 205036575 U CN205036575 U CN 205036575U CN 201520722293 U CN201520722293 U CN 201520722293U CN 205036575 U CN205036575 U CN 205036575U
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Abstract
The utility model discloses a multi -cylinder rotary compressor, include: the several cylinder of the order constitution from the 1st cylinder to the N cylinder, the compression chamber that possesses in the cylinder separately, each compresses and carries out eccentric moving piston in the chamber, with each piston carries out reciprocating motion's gleitbretter in step, the bent axle, the bent axle possesses the drive the eccentric shaft of each piston and adjacent the jackshaft that possesses in the middle of the eccentric shaft, with base bearing that the 1st cylinder combined together carry on gliding main shaft, with the supplementary bearing that the N cylinder combines carries out gliding countershaft, at least 1 the eccentric shaft with the bent axle is assembled for the separation, it is adjacent the intermediate shaft bearing board that possesses in the middle of the cylinder with jackshaft sliding fit. According to the utility model discloses a multi -cylinder rotary compressor, improve the reliability, enlarge functioning speed, improve the compressor the large capacityization, improve compression efficiency.
Description
Technical field
The utility model relates to compressor field, especially relates to a kind of multi-cylindrical rotary compressor.
Background technique
Within about 1988, formally batch multi-cylindrical rotary compressor produced is compared with single cylinder rotary compressor, and can operate to the operating range of 120rps from the low speed of 15rps, particularly vibration aspect has superiority.In addition, in recent years, in order to for large scale system, advance using the application of the system of the 10HP level of variable-frequency type motor.
On the other hand, multi-cylindrical rotary compressor adds due to cylinder, and between centers length (length between main shaft to countershaft) can increase by crankshaft vibration that is elongated, driving 2 pistons, and bent axle can produce wear-out failure.And, the center hole of the central diaphragm in the past possessed between 2 cylinders, in an assembling process, have eccentric shaft and pass through, so center hole can become large, and crankshaft eccentric amount is little, restricted.
Model utility content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of multi-cylindrical rotary compressor, improve reliability, expand motion speed, improve the high capacity of compressor, improve compression efficiency.
According to multi-cylindrical rotary compressor of the present utility model, comprising: from the 1st cylinder to several cylinders that the order of N cylinder forms; The compression chamber possessed in respective cylinder; The piston of eccentric operating is carried out in described each compression chamber; The slide plate moved back and forth with described each piston synchronous; Bent axle, described bent axle possess drive the jack shaft possessed in the middle of the eccentric shaft of described each piston and adjacent described eccentric shaft, the main shaft carrying out sliding with the main bearing that described 1st cylinder combines, the supplementary bearing that is combined with described N cylinder carries out the countershaft that slides; At least 1 described eccentric shaft with described bent axle for being separated assembly type; The jack shaft board possessed in the middle of adjacent described cylinder and described jack shaft are slidably matched.
According to multi-cylindrical rotary compressor of the present utility model, because at least one eccentric shaft and bent axle are for being separated assembly type, jack shaft board and jack shaft are slidably matched, therefore can improve the reliability of multi-cylindrical rotary compressor, more improvement can also be carried out in the high capacity of expansion motion speed, compressor, in addition compression efficiency improvement etc.
In concrete example of the present utility model, being separated in modular described eccentric shaft and described bent axle, the connection of the cylindrical hole that possesses in described eccentric shaft and described bent axle can use any one mode in embedding, press-in, hot jacket, laser bonding.
According to specific embodiments more of the present utility model, between the cylindrical hole possessed in described eccentric shaft and described bent axle, possesses moment transferring member.
According to embodiments more of the present utility model, the external diameter of eccentric shaft described in any one is De, the external diameter of described main shaft is Dm, the external diameter of jack shaft described in any one is Dc, the external diameter of described countershaft is Ds, De≤Dc≤Dm or De≤Dc≤Ds.
Alternatively, the external diameter of described countershaft is less than the external diameter of described main shaft.
In embodiments more of the present utility model, from the central silencer that the pressurized gas of compression chamber discharge described at least one are consisted of described intermediate bearing intralamellar part.
Further, the venting gas appliance to compression chamber opening described at least one is possessed in described central silencer.
Particularly, possess from connecting 1 sucking pipe of described jack shaft board, to the passage of two that connect described jack shaft board described compression chamber shuntings.
According to preferred embodiment of the present utility model, the bearing bore diameter along described jack shaft board possesses at least one circular groove, and each circular groove is to the end face perforate of described jack shaft board.
In specific embodiment of the utility model, possess any one of lining, rolling bearing and nail bearing in the bearing bore diameter of described jack shaft board.
According to embodiments more of the present utility model, described jack shaft board is the thrust slip surface supporting described bent axle load.
Alternatively, the described eccentric shaft being separated assembling is powder metallurgic method profiled member or forging method profiled member.
According to specific embodiments more of the present utility model, carry out between the spindle end bearing of sliding support and described main bearing to the end of described main shaft, possess the motor driving described main shaft.
Accompanying drawing explanation
Fig. 1 is relevant to embodiment 1 of the present utility model, represents the in-built longitudinal section of multi-cylindrical rotary compressor;
Fig. 2 is relevant with this embodiment 1, represents the cross-sectional view of compression mechanical part;
Fig. 3 is relevant with this embodiment 1, represents the longitudinal section of compression mechanical part;
Fig. 4 is relevant to embodiment 1 of the present utility model, represents jack shaft board ssembly drawing;
Fig. 5 is relevant to this embodiment 1, represents the External view of bent axle;
Fig. 6 is relevant with this embodiment 1, represents the details drawing of separated type eccentric shaft and key;
Fig. 7 is relevant to embodiment 2 of the present utility model, represents the longitudinal section of compression mechanical part;
Fig. 8 is relevant to embodiment 3 of the present utility model, the sectional view of jack shaft board;
Fig. 9 is relevant to embodiment 3 of the present utility model, the sectional view of jack shaft board;
Figure 10 is relevant to embodiment 3 of the present utility model, the sectional view of jack shaft board;
Figure 11 is relevant to embodiment 4 of the present utility model, the sectional view of jack shaft board;
Figure 12 is relevant to embodiment 5 of the present utility model, the longitudinal section of compressing mechanism;
Figure 13 is relevant to embodiment 6 of the present utility model, the jack shaft board ssembly drawing of multi-cylindrical rotary compressor;
Figure 14 is relevant to embodiment 6, the jack shaft board ssembly drawing of multi-cylindrical rotary compressor;
Figure 15 is relevant to embodiment 7 of the present utility model, represent the longitudinal section of the multi-cylindrical rotary compressor adding the 4th bearing.
Reference character:
Multi-cylindrical rotary compressor 1, housing 2,
Motor 4, rotor 4a,
Compression mechanical part 5, jack shaft board the 40 (50), the 1st cylinder 11, the 2nd cylinder 21, main bearing 43, supplementary bearing 45, the 1st compression chamber 11a, the 2nd compression chamber 21a, the 1st piston 51, the 2nd piston 52, the 1st slide plate 53, the 2nd slide plate 54, key 37, the 2nd thrust 35a, passage 41a (41b), intermediate bearing internal diameter 40a, intermediate bearing plate hole 40c, the 1st thrust 34b,
Bent axle 30, main shaft 31, the 1st eccentric shaft 34, jack shaft 32, the 2nd eccentric shaft 35, countershaft 33, axle center hole 30a, oilhole 32b, oily key 32a, the first thrust top 34a, keyway 33a (35e), key 37, oil groove 35c, the 3rd eccentric shaft 36, auxiliary axis 31a,
Outlet pipe 3, middle sucking pipe 41, liquid-storage container 60, the 1st silencing apparatus 43a, the 2nd silencing apparatus 45a, screw 43b (45b), clearance C 1 (C2), intermediate bearing board component 8 (9), circular groove 46, sliding bearing 65, Needle bearing 66,
Segmentation intermediate plate 50a, lining 67, central silencer 50b, the 1st exhaust port 70a, the 2nd exhaust port 70b, outlet valve 71, coil spring 72, cross aisle 50c, longitudinal channel 50d, flange 67a, the 1st sucking pipe 55, the 2nd sucking pipe 56, bearing balancing orifice 44, bearing pore 40b,
Frame 48, upper end bearing 48a.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Describe in detail according to the multi-cylindrical rotary compressor 1 of the utility model embodiment below with reference to Fig. 1-Figure 15, multi-cylindrical rotary compressor 1 can be applied in air conditioner, refrigerating plant, water heater, vehicle-mounted freezing or aircondition.
According to the multi-cylindrical rotary compressor 1 of the utility model embodiment, comprising: the compression chamber possessed the several cylinders formed from the 1st cylinder to the order of N cylinder, separately cylinder, the piston carrying out eccentric operating in each compression chamber, the slide plate, the bent axle 30 that move back and forth with each piston synchronous.
Bent axle 30 possess drive the jack shaft possessed in the middle of the eccentric shaft of each piston and adjacent eccentric shaft, the main shaft 31 carrying out sliding with the main bearing 43 that the 1st cylinder combines, the supplementary bearing 45 that is combined with N cylinder carries out the countershaft 33 that slides.
At least 1 eccentric shaft with bent axle 30 for being separated assembly type.The jack shaft board 40 and the jack shaft that possess in the middle of adjacent cylinder are slidably matched.
In other words, multi-cylindrical rotary compressor 1 has N number of cylinder, N number of piston, N number of slide plate and bent axle 30.Wherein each cylinder has compression chamber, has the piston carrying out eccentric operating in each compression chamber, and each cylinder is provided with the slide plate coordinating with piston to move back and forth.Main bearing 43 is located on the 1st cylinder, and supplementary bearing 45 is located on N cylinder.Jack shaft board 40 is provided with between two often adjacent cylinders.
Bent axle 30 comprises multiple eccentric shaft, jack shaft, main shaft 31 and countershaft 33, multiple eccentric shaft and multiple piston one_to_one corresponding are arranged, be enclosed within each eccentric shaft in corresponding piston to drive corresponding piston eccentric operating, jack shaft is provided with between two adjacent eccentric shafts, each jack shaft board 40 is slidably matched with corresponding jack shaft, main shaft 31 and main bearing 43 are slidably matched, and countershaft 33 and supplementary bearing 45 are slidably matched.At least one eccentric shaft and bent axle 30 are for being separated assembly type.
Be understandable that, multi-cylindrical rotary compressor 1 can be hermetic rotary compressor, the opening rotary compressor of belt-driven, horizontal multi-cylindrical rotary compressor or swing multi-cylindrical rotary compressor.When multi-cylindrical rotary compressor 1 is sealing rotary compressor, multi-cylindrical rotary compressor 1 also comprises motor 4, and the rotor 4a of motor 4 coordinates with bent axle 30 and rotates with driving crank 30.In the concrete example of Figure 15, carry out between the spindle end bearing 48a of sliding support and main bearing 43 to the end of main shaft 31, possess the motor 4 of drive main spindle 31.
According to the multi-cylindrical rotary compressor 1 of the utility model embodiment, because at least one eccentric shaft and bent axle 30 are for being separated assembly type, jack shaft board 40 and jack shaft are slidably matched, therefore can improve the reliability of multi-cylindrical rotary compressor 1, more improvement can also be carried out in the high capacity of expansion motion speed, compressor, in addition compression efficiency improvement etc.
In specific embodiment of the utility model, being separated in modular eccentric shaft and bent axle 30, the connection of the cylindrical hole that possesses in eccentric shaft and bent axle 30 can use any one mode in embedding, press-in, hot jacket, laser bonding.That is, eccentric shaft can adopt embedding, press-in, hot jacket or laser bonding mode be assemblied on bent axle 30.
According to embodiments more of the present utility model, between the cylindrical hole possessed in eccentric shaft and bent axle 30, possesses moment transferring member.Such as shown in figures 3 to 6, have key 37 between eccentric shaft and bent axle 30, key 37 is the means flywheel moment of bent axle 30 be delivered on eccentric shaft.
In embodiments more of the present utility model, the external diameter of any one eccentric shaft is De, the external diameter of main shaft 31 is Dm, the external diameter of any one jack shaft is Dc, the external diameter of countershaft 33 is Ds, De≤Dc≤Dm or Ds.That is, De≤Dc≤Dm, or De≤Dc≤Ds.
Alternatively, the external diameter of countershaft 33 is less than the external diameter of main shaft 31.
In embodiments more of the present utility model, the pressurized gas of discharging from least one compression chamber are by the central silencer 50b of jack shaft board 40 Inner Constitution.That is, jack shaft board 40 inside has cavity to limit central silencer 50b, and the pressurized gas of discharging from least one compression chamber enter into central silencer 50b.Thus the noise of multi-cylindrical rotary compressor 1 can be reduced.
Further, the venting gas appliance at least one compression chamber opening is possessed in central silencer 50b.That is, have venting gas appliance in central silencer 50b, venting gas appliance can at least one compression chamber opening.Such as in the example of fig. 11, in central silencer 50b, have respectively to the exhaust port of two compression chamber openings, in two exhaust ports, be respectively equipped with outlet valve 71, be connected with coil spring 72 between two outlet valves 71 to control the path increment of outlet valve 71.
In embodiments more of the present utility model, possess from connecting 1 sucking pipe of jack shaft board 40, to the passage that two compression chambers connecting jack shaft board 40 are shunted.That is, low-pressure gas enters in passage from sucking pipe, and by corridor diversion in two compression chambers.
According to preferred embodiment of the present utility model, the bearing bore diameter along jack shaft board 40 possesses at least one circular groove 46, the end face perforate of each circular groove 46 pairs of jack shaft boards 40.In other words, jack shaft board 40 can be provided with at least one circular groove 46, each circular groove 46 has out the opening on the end face of jack shaft board 40.Such as in the example of fig. 8, jack shaft board 40 has two circular grooves, 46, two circular grooves 46 and is located at respectively on two opposing end surfaces of jack shaft board 40.Thus by being provided with circular groove 46, the load of jack shaft can be avoided to concentrate at the opening end of jack shaft board 40 internal diameter 40a, evading abrasion from opening end and expand.
In specific embodiments more of the present utility model, possess in the bearing bore diameter of jack shaft board 40 any one of lining 65, rolling bearing and nail bearing 66.Thus the wear resistance of jack shaft can be improved.
According to embodiments more of the present utility model, jack shaft board 40 is the thrust slip surface supporting bent axle 30 load.Such as, there is the knee-action of little clearance C 2, restriction the 2nd eccentric shaft 35 not excessive between the upper end of the 2nd eccentric shaft 35 and the lower end surface of jack shaft board 40.
Alternatively, the eccentric shaft being separated assembling is powder metallurgic method profiled member or forging method profiled member.That is, eccentric shaft can by powder metallurgic method or forging method processing mode shaping.
Be described in detail according to the multi-cylindrical rotary compressor of the several specific embodiment of the utility model below with reference to Fig. 1-Figure 15.
Embodiment 1:
The periphery of the jack shaft board 40 that the center of periphery and compression mechanical part 5 that the multi-cylindrical rotary compressor 1 shown in Fig. 1 secures motor 4 in the internal diameter of columniform housing 2 possesses.Compression mechanical part 5 by: the main bearing 43 of the 1st cylinder 11 and the 2nd cylinder 21 and its combination and supplementary bearing 45, form with the jack shaft board 40 of its combination, the bent axle 30 etc. that slides with these 3 bearings between the 1st cylinder 11 and the 2nd cylinder 21.Rotor 4a is secured in addition in bent axle 30.
Connect the outlet pipe 3 of housing 2 upper end, the middle sucking pipe 41 connecting jack shaft board 40 periphery and liquid-storage container 60, the high pressure side being connected refrigerating circulatory device respectively and low voltage side.Main bearing 43 and supplementary bearing 45 have possessed the 1st silencing apparatus 43a and the 2nd silencing apparatus 45a respectively.The internal pressure of the housing 2 of Fig. 1 be high pressure side but the internal pressure of the utility model middle shell 2 to be low voltage side also passable.
Fig. 2 is the X-X cross section of Fig. 1.In the 2nd compression chamber 21a that the central authorities of the 2nd cylinder 21 possess, possess the 2nd piston 52 carrying out eccentric rotary by the 2nd eccentric shaft 35 (eccentric amount e) and the 2nd slide plate 54 moved back and forth by this piston eccentric operating.The range (S) of the 2nd slide plate 54 is 2 times of eccentric amount e.As aftermentioned, the utility model can strengthen eccentric shaft amount (e).Therefore, feature is the increase due to slide plate range amount (S), can expand the discharge capacity of compression chamber.
Countershaft 33 is be separated assembly type with the 2nd eccentric shaft 35.Therefore, the key 37 that the flywheel moment of bent axle 30 represents by a dotted line can be delivered in countershaft 33, and the 2nd eccentric shaft 35 rotates in the direction of the clock.In addition, the 2nd piston 52 revolves round the sun along the internal diameter of the 2nd compression chamber 21a.2nd slide plate 54 is to-and-fro motion simultaneously.The 2nd thrust 35a possessed in 2nd eccentric shaft 35 can support the load of bent axle 30, the plane of supplementary bearing 45 is carried out SLALOM and moves.In addition, what piston and slide plate were integrated is swingly also suitable for.
Fig. 3 is the longitudinal section of compression mechanical part 5.And, the silencing apparatus of 2 shown in Fig. 1 and to be accommodated in the venting gas appliance possessed in main bearing 43 and supplementary bearing 45 in these silencing apparatuss not shown.Between 1st cylinder 11 and the 2nd cylinder 21, jack shaft board 40, this periphery with the central diaphragm (or intermediate plate) be equivalent in the past are connected to middle sucking pipe 41.The passage 41a that middle sucking pipe 41 is shunted with passage 41b, be connected the 1st compression chamber 11a and the 2nd compression chamber 21a respectively, carries out opening.
The design can improve the height of jack shaft board 40.Therefore, the bearing length of jack shaft board 40 and the internal diameter of middle sucking pipe 41 can expand.The effect of the expansion of middle sucking pipe 41 is, can guarantees air intake passage necessary in 2 compression chambers, shunts them.
There is in 1st compression chamber 11a and the 2nd compression chamber 21a the 1st piston 51 and the 2nd piston 52 and slide plate (not shown) respectively.These pistons, are driven by the 1st eccentric shaft 34 of bent axle 30 and the 2nd eccentric shaft 35.The order that bent axle 30 presses main shaft 31 and the 1st eccentric shaft 34 and jack shaft 32 and the 2nd eccentric shaft 35 and countershaft 33 is formed.Main shaft 31 and jack shaft 32 and countershaft 33 slide with main bearing 43, intermediate bearing internal diameter 40a and supplementary bearing 45 respectively.These key element components, are slided by 5 screws.These key element components, are fixed on jack shaft board 40 respectively by 5 screw 43b and screw 45b.
Carry out the compression of the 1st piston 51 and the 2nd piston 52 rotated and the repeated load of centrifugal force generation by the phase angles of 180 degree, support respectively by jack shaft board 40 and main bearing 43, jack shaft board 40 and supplementary bearing 45.In addition, in the air-conditioning rotary compressor of 1.5HP, repeated load is the about 200Kgf of difference.The utility model, by adding with the jack shaft board 40 of jack shaft 32 sliding support, can reducing beating of the slip component that link with bent axle 30 and bent axle 30, the face that each bearing produces is pressed and can significantly be reduced.
Here, the external diameter of countershaft 33 less than the external diameter of main shaft 31 by 10 ~ 15%, in order to be separated from countershaft 33 the 2nd eccentric shaft 35 of assembling, 1st eccentric shaft 34 integrated with main shaft 31 offset suitable or adjust in order to expansion offset compared with the past.
To the lubricant oil that oilhole 32b supplies from the axle center hole 30a (Fig. 5) of through bent axle 30 inside, flow out in the oily key 32a possessed in jack shaft 32, the slip surface of lubrication jack shaft 32 and jack shaft board internal diameter 40a.Afterwards, the inner radius of the 1st piston 51 and the 2nd piston 52 is flowed out to, lube pistons slip surface.In addition, oil groove 32a also can be configured in jack shaft board internal diameter 40a side.
Bent axle 30 load of fixed electrical machinery rotor 4a, be the thrust load of the 2nd thrust 35a.There is little clearance C 1 between the 1st thrust top 34a possessed in 1st eccentric shaft 34 and the lower end surface of main bearing 43, prevent the knee-action of bent axle 30 excessive.In addition, there is the knee-action of little clearance C 2, restriction the 2nd eccentric shaft 35 not excessive between the upper end of the 2nd eccentric shaft 35 and the lower end surface of jack shaft board 40.
Fig. 4 represents intermediate bearing board component 8.This assembling method is described.First, the countershaft 33 of the bent axle 30 shown in Fig. 5 passes through the jack shaft board internal diameter 40a of jack shaft board 40.Next, after inserting fixing key 37 shown in Fig. 6 in the keyway 33a of countershaft 33, the key 37 that is fixed on countershaft 33 of the keyway 35e that possesses in the internal diameter 35b of the 2nd eccentric shaft 35 inserts.According to above step, jack shaft board assembling 8 completes.Just like this, complete intermediate bearing board component 8 in advance, the packing engineering ratio of aftermentioned compression mechanical part 5 is easier to.In addition, the bent axle 30 shown in Fig. 5, bent axle 30 90-degree rotation relative to Fig. 3 or Fig. 4.
Countershaft 33 and the 2nd eccentric shaft 35 are combinations of slip or press-in or hot jacket, and key 37 is the means flywheel moment of bent axle 30 be delivered on the 2nd eccentric shaft 35.In addition, the 2nd eccentric shaft 35 is by powder metallurgy or forging method moulding, and the processing ratio of the 2nd eccentric shaft 35 is easier to.
In addition, bent axle 30 and the 2nd eccentric shaft 35 also can utilize in the method for CO2 atmosphere or YAG atmosphere laser bonding.This laser bonding, only has very little protuberance at laser welding portion.Therefore, the external diameter slip surface of eccentric shaft swashs light-struck situation and should avoid, and the bottom surface such as along thinner oil groove 35c is welded.In addition, the groove adding welding in eccentric shaft is also favourable.
Next, the main points of the assembling method of compression mechanical part 5 are described.First, the spindle hole of main bearing 43 and the 1st compression chamber 11a of the 1st cylinder 11 carry out aligning, after temporary fixed, in the vane slot that the 1st slide plate 53 and the 1st piston 51 are accommodated in the 1st cylinder 11 respectively and the 1st compression chamber 11a.
The main shaft 31 of the intermediate bearing board component 8 completed next, in advance, by after the spindle hole that possesses in the middle of main bearing 43, jack shaft 32 and jack shaft board internal diameter 40a aligning, pre-fixed jack shaft board 40 and the 1st cylinder 11.Thereafter, assemble according to the assembling procedure of multi-cylindrical rotary compressor in the past.
At this, the difference of the minimum revolution external diameter of the jack shaft board internal diameter 40a shown in Fig. 3 and the 1st piston 51 and minimum dimension (w), be the necessary size of Leakage Gas in order to prevent from from the internal diameter (high pressure side) of piston 51 to the 1st compression chamber 11a (low voltage side).Intermediate bearing board component 8 in multi-cylindrical rotary compressor in the past, shown in Fig. 4 will be set up, and jack shaft board internal diameter can not be larger than any one in the external diameter of 2 eccentric shafts.That is, in design in the past, because the system of minimum dimension (w) is limit, the offset (e) of eccentric shaft can not be large.
On the other hand, embodiment 1, by the 2nd eccentric shaft 35 being carried out be separated assembling, jack shaft board internal diameter 40a can be suitable with the external diameter of main shaft 31 or countershaft 33.Therefore, offset (e) can expand.According to this effect, do not change compression chamber internal diameter size or Crankshaft Sizes just can expand discharge capacity.Design freedom due to this effect, compression chamber internal diameter and piston external diameter can become large, can carry out the optimization of compression efficiency and the expansion of cold.
Like this, the utility model is by carrying out separation assembling by the 2nd eccentric shaft 35, in addition, by adding jack shaft board internal diameter 40a at jack shaft board 40, still the reliability of multi-cylindrical rotary compressor is not improved, and can also carry out more improvement in the high capacity of expansion motion speed, compressor, in addition compression efficiency improvement etc.
Embodiment 2:
Embodiment 2 shown in Fig. 7 improves relevant with the slippage loss of the jack shaft 32 that jack shaft 32 path brings.Relative to the internal diameter of the 1st compression chamber 11a, the 2nd compression chamber 21a and height dimension little, discharge capacity is little.Under such design condition, relative to main shaft 31, jack shaft 32 carries out path, the slippage loss that produces between axle and bearing can reduce.
Path, suitable with the external diameter of countershaft 33 is carried out in embodiment 2, by jack shaft 32 and jack shaft board internal diameter 40a.Its result, does not damage the abrasion reliability of jack shaft 32, just can improve slippage loss.In addition, the external diameter of jack shaft 32 can be selected between the external diameter of main shaft 31 and the external diameter of countershaft 33.
Embodiment 3:
Embodiment 3 is relevant with the improvement of the bearing performance of jack shaft board 40.In fig. 8, the circular groove 46 along jack shaft board internal diameter 40a opening is added.Circular groove 46, avoid the load of jack shaft 32 to concentrate at the opening end of jack shaft board internal diameter 40a, evade abrasion from opening end and expand.And, due to jack shaft board internal diameter 40a wear regimes, also can select the circular groove 46 of omission one side.
Sliding bearing (lining) 65 is pressed in intermediate bearing plate hole 40c by Fig. 9.The finish materials of the selflubricating possessed in sliding bearing 65, plays effect when initial stage break-in and the short time oil film reduction of jack shaft 32, can improve the wear resistance performance of jack shaft 32.
Needle bearing 66 is pressed in intermediate bearing plate hole 40c by Figure 10.Its result, even the running dry of short time also can evade abrasion problems.To the high speed operation of 150rps or the reliability of 5 ~ 10HP machine, this wear-resisting improvement, such as guarantees that aspect is favourable.In addition, in the design that the expansion of intermediate bearing plate hole 40c can allow, general rolling bearing can be suitable for.
Embodiment 4:
Embodiment 4 shown in Figure 11, be that 2 components of face symmetry are cut intermediate plate 50a assembling bushings and combined and form jack shaft board 50.The central silencer 50b by the Inner Constitution of this assembling, jack shaft board 50.
Using method as central silencer 50b has 2 selections.(A) be equipped with the venting gas appliance to the 1st compression chamber 11a and the 2nd compression chamber 21a opening in each segmentation intermediate plate 50a, the method as compression chamber exhaust silencer, (B) do not configure venting gas appliance, as the method for the 3rd silencing apparatus being communicated with the 2nd silencing apparatus or the 1st silencing apparatus 43a.
Method that Figure 11 represents (A).In central silencer 50b, possess respectively to the 1st exhaust port 70a and the 2nd exhaust port 70b of the 1st compression chamber 11a and the 2nd compression chamber 21a opening.Be configured with circular outlet valve 71 in these each exhaust ports, between them, be configured with the coil spring 72 of control valve path increment.
The pressurized gas compressed in the 1st compression chamber 11a and the 2nd compression chamber 21a are discharged in central silencer 50b, and flow out in the 1st silencing apparatus 43a (Fig. 1) through cross aisle 50c and longitudinal channel 50d.At this moment, the gas of discharging with the exhaust port possessed from main bearing 43 collaborates.
Select the design of (B), the pressurized gas of discharging from the 2nd silencing apparatus 45a or the 1st silencing apparatus 43a are through central silencer 50b.Therefore, central silencer 50b is that additional noise reduces silencing apparatus.
(A), in selection, the 1st compression chamber 11a and the 2nd compression chamber 21a possesses 2 exhaust ports respectively.The means reducing exhaust pressure loss when the adding of exhaust port, high speed operation as more than 90rps are very important.In addition, the volume of above-mentioned 2 compression chamber one sides is little, can omit the venting gas appliance of this compression chamber one side.
(B), in selection, the central silencer 50b be made up of thicker foundry goods can play larger noise reduction.In addition, the silencing apparatus configuration volume of multi-cylindrical rotary compressor can limit less, so applying flexibly of the central silencer 50b received in jack shaft board 50 is very beneficial.
In the assembling of 2 segmentation intermediate plate 50a and lining 67, be pressed into by lining 67 after 2 components cut intermediate plate 50a center, the two ends impact briquetting of lining 67 cuts intermediate plate 50a to connect 2 components.At this moment, can there be flange 67a at the two ends of lining 67.Thereafter the internal diameter processing of lining 67, is carried out.In addition, 2 cylinders that the two sides of jack shaft board 50 connects can compress 2 segmentation intermediate plate 50a.
Embodiment 5:
Inner radius embodiment illustrated in fig. 12 5, the periphery of the 1st cylinder 11 to be fixed on housing 2.In addition, the 1st eccentric shaft 34 is separated combination with bent axle 30.1st sucking pipe 55 is connected with the 1st compression chamber 11a and the 2nd compression chamber 21a respectively with the 2nd sucking pipe 56.
Embodiment 5, in order to complete intermediate bearing board component 8, the 1st eccentric shaft 34 be arranged on bent axle 30 before, jack shaft board internal diameter 40a needs by main shaft 31.Therefore, jack shaft board internal diameter 40a and jack shaft 32 external diameter relative to the external diameter of main shaft 31 must be equal more than.But, in such as embodiment 1, jack shaft 32≤countershaft 33 sets up.In addition, of the present utility model is eccentric shaft Wai Jing≤jack shaft external diameter substantially.Therefore, the inequality of eccentric shaft Wai Jing≤jack shaft Wai Jing≤main shaft external diameter or countershaft external diameter sets up.
At this, the 1st thrust 34b that adds on the 1st eccentric shaft 34 is the thrust of bent axle 30.Therefore, the 1st thrust 34b rotational slide in jack shaft board 50 plane.In addition, the 2nd thrust 35a of the 2nd eccentric shaft 35 can not bear the load of bent axle 30, the surface sliding at supplementary bearing 45.
By thrust slip surface being changed to jack shaft board 40, circular groove 46 can being increased on supplementary bearing 45.In addition, if necessary, in main bearing 43, circular groove 46 is added also passable.These circular grooves 46 are the same with the circular groove 46 of Fig. 8, can improve supplementary bearing 45 and main bearing 43 and the abrasion of the countershaft 33 that is slidably connected with them and main shaft 31.
The bearing balancing orifice 44 of through connection circular groove 46 and the bearing pore 40b of jack shaft board 50, make the internal pressure of the pressure of 2 piston inner diameters and housing 2 suitable, bent axle 30 and the 1st piston 51 the same with the charge oil pressure of each slip surface of the 2nd piston 52.
Embodiment 6:
Figure 13 represents the cases of design of the intermediate bearing board component 9 used in 3 cylinder rotary compressors, except the 1st eccentric shaft the 34,2nd eccentric shaft 35 is separated assembling with the 3rd eccentric shaft 36 with bent axle 30.Therefore, between the 3rd eccentric shaft 36 and the 1st eccentric shaft 34 or between the 1st eccentric shaft 34 and the 2nd eccentric shaft 35, the assembling of each jack shaft board 40A and jack shaft board 40B is set up.
, jack shaft board 40A identical with embodiment 5 can pass through main shaft 31, so the external diameter of jack shaft 32A is more than main shaft 31 is equal.The jack shaft board 40B of one side passes through countershaft 33 so the external diameter of 2 jack shafts is suitable with the external diameter of jack shaft 32A, or jack shaft 32B can be accomplished path relative to jack shaft 32A.
And, as Figure 14, be not separated the 3rd eccentric shaft 36, be separated assembling the 1st eccentric shaft 34 and the 2nd eccentric shaft 35, the external diameter of jack shaft 32A and jack shaft 32B with do little after the external diameter of countershaft 33 can be the same.Or these medium axle diameters can be larger than the external diameter of countershaft 33 also passable.Its assembling method is, from countershaft 33 side direction the 3rd eccentric shaft 36,1. by jack shaft board 40A, thereafter, the 1st eccentric shaft 34 is assembled in insert in the 1st eccentric shaft 34 in bent axle 30,2. by the 2nd cylinder 21 having received piston 52,3. insert jack shaft board 40B after, the 2nd eccentric shaft 35 is assembled in bent axle 30, by this order.
In addition, the definition of item 1 as requested, the position of the 3rd eccentric shaft 36 are configured with the 1st cylinder 11, the position of the 1st eccentric shaft 34 configures the 2nd cylinder 21, is configured with the 3rd cylinder in the position of the 2nd eccentric shaft 35.Therefore, in compressing mechanism parts, have in the 1st cylinder 11 in main bearing 43, the 3rd cylinder and have supplementary bearing 45.
Just complete according to embodiment 6, the 3 cylinder rotary compressors with 4 bearings that are made up of 3 cylinders, main bearing 43 and supplementary bearing 45 and 2 jack shaft boards.In addition, also likely eccentric shaft and cylinder number is increased further.Even multi-cylindrical rotary compressors more than 3 cylinders, also can be completed by announcement technology of the present utility model.
Embodiment 7:
Figure 15, secure frame 48 in the upper space of motor 4, the inner circumferential of housing 2.The auxiliary axis 31a formed in main shaft 31, the upper end bearing 48a possessed with bearing spider 48 center is sliding closes.Upper end bearing 48a is the 4th bearing (multi cylinder) or the 5th bearing (3 cylinder), the abrasion of the shake of rotor 4a and the upper end portion of main shaft 31 can prevent.Upper end bearing 48a, particularly large-scale multi-cylindrical rotary compressor to be necessary.
Industry utilizes possibility
Multi-cylindrical rotary compressor of the present utility model can carry in air conditioner, refrigerating plant, water heater, vehicle-mounted freezing or aircondition etc.
In sum,
The problem that model utility will solve is as follows:
The between centers length (length between main shaft to countershaft) of the bent axle of multi-cylindrical rotary compressor is large, bent axle rigidity is weak, and whirling vibration is large.Therefore, when high speed operation etc., there is the problem that main shaft or countershaft produce wear-out failure.
Solve the concrete means that above-mentioned problem adopts:
2nd eccentric shaft 35 and bent axle 30 are for being separated assembly type.First, in do not have the jack shaft 32 of the bent axle 30 of the 2nd eccentric shaft 35 to insert jack shaft board internal diameter 40a that jack shaft board 40 center possesses.Thereafter, the 2nd eccentric shaft 35 is connected in countershaft 33.Therefore, the main shaft 31 of bent axle 30 and jack shaft 32 and countershaft 33 slide in 3 positions of main bearing 43 and jack shaft board 40 and supplementary bearing 45 respectively.There is no the vibration of bent axle 30 completely, can wear-out failure be solved.
The effect of model utility:
The utility model, promote bent axle reliability by the jack shaft board of sliding support bent axle jack shaft, (1), realize running up, compressor maximizes, (2) significantly reduced by the center bore of jack shaft board, realize compression efficiency to promote, discharge capacity increases.The utility model needs the component negligible amounts added, and press part assembling easily.In addition, aligning technique in the past can be used.
In addition, not still hermetic rotary compressor, also can be suitable in the opening rotary compressor of belt-driven, in addition horizontal multi-cylindrical rotary compressor, swing multi-cylindrical rotary compressor, further, also can be applied in housing pressure is in the multi-cylindrical rotary compressor of low pressure.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (13)
1. a multi-cylindrical rotary compressor, is characterized in that, comprising:
From the 1st cylinder to several cylinders that the order of N cylinder forms;
The compression chamber possessed in respective cylinder;
The piston of eccentric operating is carried out in described each compression chamber;
The slide plate moved back and forth with described each piston synchronous;
Bent axle, described bent axle possess drive the jack shaft possessed in the middle of the eccentric shaft of described each piston and adjacent described eccentric shaft, the main shaft carrying out sliding with the main bearing that described 1st cylinder combines, the supplementary bearing that is combined with described N cylinder carries out the countershaft that slides;
At least 1 described eccentric shaft with described bent axle for being separated assembly type;
The jack shaft board possessed in the middle of adjacent described cylinder and described jack shaft are slidably matched.
2. multi-cylindrical rotary compressor according to claim 1, is characterized in that,
Being separated in modular described eccentric shaft and described bent axle, the connection of the cylindrical hole that possesses in described eccentric shaft and described bent axle can use any one mode in embedding, press-in, hot jacket, laser bonding.
3. multi-cylindrical rotary compressor according to claim 1, is characterized in that, possesses moment transferring member in described eccentric shaft between the cylindrical hole possessed and described bent axle.
4. multi-cylindrical rotary compressor according to claim 1, is characterized in that,
The external diameter of eccentric shaft described in any one is De, the external diameter of described main shaft is Dm, the external diameter of jack shaft described in any one is Dc, the external diameter of described countershaft is Ds, De≤Dc≤Dm or De≤Dc≤Ds.
5. multi-cylindrical rotary compressor according to claim 1, is characterized in that, the external diameter of described countershaft is less than the external diameter of described main shaft.
6. multi-cylindrical rotary compressor according to claim 1, is characterized in that, from the central silencer that the pressurized gas of compression chamber discharge described at least one are consisted of described intermediate bearing intralamellar part.
7. multi-cylindrical rotary compressor according to claim 6, is characterized in that,
The venting gas appliance to compression chamber opening described at least one is possessed in described central silencer.
8. multi-cylindrical rotary compressor according to claim 1, is characterized in that,
Possess from connecting 1 sucking pipe of described jack shaft board, to the passage of two that connect described jack shaft board described compression chamber shuntings.
9. multi-cylindrical rotary compressor according to claim 1, is characterized in that, the bearing bore diameter along described jack shaft board possesses at least one circular groove, and each circular groove is to the end face perforate of described jack shaft board.
10. multi-cylindrical rotary compressor according to claim 1, is characterized in that,
Possess any one of lining, rolling bearing and nail bearing in the bearing bore diameter of described jack shaft board.
11. multi-cylindrical rotary compressors according to claim 1, is characterized in that,
Described jack shaft board is the thrust slip surface supporting described bent axle load.
12. multi-cylindrical rotary compressors according to claim 1, is characterized in that, the described eccentric shaft being separated assembling is powder metallurgic method profiled member or forging method profiled member.
13. multi-cylindrical rotary compressors according to claim 1, is characterized in that, carry out between the spindle end bearing of sliding support and described main bearing to the end of described main shaft, possess the motor driving described main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722293.4U CN205036575U (en) | 2015-09-17 | 2015-09-17 | Multi -cylinder rotary compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722293.4U CN205036575U (en) | 2015-09-17 | 2015-09-17 | Multi -cylinder rotary compressor |
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| CN205036575U true CN205036575U (en) | 2016-02-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090027A (en) * | 2015-09-17 | 2015-11-25 | 广东美芝制冷设备有限公司 | Multi-air-cylinder rotary compressor |
| CN105927539A (en) * | 2016-04-20 | 2016-09-07 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor |
| CN108240332A (en) * | 2016-12-27 | 2018-07-03 | 日立江森自控空调有限公司 | Closed rotating compressor and refrigerating air-conditioning |
| CN113482932A (en) * | 2021-08-23 | 2021-10-08 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration equipment |
-
2015
- 2015-09-17 CN CN201520722293.4U patent/CN205036575U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090027A (en) * | 2015-09-17 | 2015-11-25 | 广东美芝制冷设备有限公司 | Multi-air-cylinder rotary compressor |
| CN105927539A (en) * | 2016-04-20 | 2016-09-07 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor |
| CN108240332A (en) * | 2016-12-27 | 2018-07-03 | 日立江森自控空调有限公司 | Closed rotating compressor and refrigerating air-conditioning |
| CN108240332B (en) * | 2016-12-27 | 2020-02-14 | 日立江森自控空调有限公司 | Closed rotary compressor and refrigerating air conditioner |
| CN113482932A (en) * | 2021-08-23 | 2021-10-08 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration equipment |
| CN113482932B (en) * | 2021-08-23 | 2023-09-01 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration equipment |
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