CN202266426U

CN202266426U - Vortex refrigeration compressor

Info

Publication number: CN202266426U
Application number: CN201120348951XU
Authority: CN
Inventors: 杨春立; 刘忠赏
Original assignee: Dalian Sanyo Compressor Co Ltd
Current assignee: Panasonic Appliances Compressor Dalian Co Ltd
Priority date: 2011-09-16
Filing date: 2011-09-16
Publication date: 2012-06-06
Anticipated expiration: 2021-09-16

Abstract

The utility model discloses a vortex refrigeration compressor, which comprises a housing, a lower support, a lower bearing, an upper support, an upper bearing, a motor stator, a motor rotor, a crankshaft, a spacing ring and a screwed joint. The crankshaft supports on the upper and lower support through the upper and the lower bearing, and the spacing ring is sleeved on the crankshaft; two ends are respectively next to the crankshaft shoulder and the upper end of the lower bearing inner ring; the lower transverse plane of the spacing ring is opened with a gap, and the inner rim is chamfered; the length from the crankshaft shoulder to the upper bearing cooperation part, and the length from the shaft shoulder to the lower bearing cooperation part is uncertain; the end of the shaft shoulder side is threaded, and the crankshaft is opened with an oil orifice; the screwed joint is installed on the screw thread screw thread shaft segment at the end of the crankshaft, after fastening, the crankshaft, the spacing ring and the lower bearing inner ring become one body. The utility model has the beneficial effects of small crankshaft friction loss and improved compressor efficiency; crankshafts of a plurality of lengths can be processed by a clamp, thereby improving production efficiency and optimizing motor specification; the lower bearing has convenient and effective lubrication channels for improving usage life.

Description

A kind of swirl type cold compressor

Technical field

The utility model relates to technical field of refrigeration equipment, particularly swirl type cold compressor.

Background technique

Enclosed compressor be with the motor that drives usefulness within compression member places the housing of sealing.This compressor has only a bent axle usually, and rotor is placed on the bent axle, and the rotor both sides have the support member that bearing has been installed that bent axle is supported the location respectively, the radial displacement of restriction bent axle.In order to reduce material consumption and reduction compressor height, existing technology normally designs crankshaft length according to the motor whole height, and the length of bent axle is decided by motor size usually.Bent axle axially locating mode commonly used is to be close to the supporting element end face with shoulder of crank or tail end face, limits bent axle axial displacement.The deficiency of existing technology is:

1, bent axle axially locating mode is for the vertical compressor of arranging of bent axle, and the locating face place has frictional loss, has reduced the efficient of compressor.

2, enclosed compressor, particularly cooling compressor is because motor can obtain the abundant cooling of refrigeration agent, so can be operated in the power range of non-constant width with a motor.And that main feature of induction alternating current (AC) motor is a motor best efficiency point is corresponding with fixing output torque.Though this has just caused a motor in very high-power scope, to work, the corresponding output torque of its peak efficiency has only one.When the compressor product percent of pass designs, for the efficient that guarantees every kind of ability compressor is high as much as possible, just can not adopt, but want every kind of ability compressor that a kind of motor is arranged with a kind of motor.The difference of the rating of electric machine can cause the compressor apparent size different usually, and when external diameter was constant, height will change, and it is a variety of also just to have caused crankshaft length to have.The crank throw portion axis of bent axle and gyration center have very high coaxality requirement; This must position with two bearing auxiliary sections when making processing crank throw portion; These two positioning parts change with crankshaft length is different apart from meeting; This just needs to change different anchor clamps and comes machining crankshafts, and inefficiency has restricted the motor optimal design.

Summary of the invention

The purpose of the utility model provides a kind of swirl type cold compressor, under the prerequisite that guarantees manufacturing efficiency, makes the motor optimal design become possibility; And improve the axially locating mode, avoid the frictional loss on the locating face, the compressor efficiency of every kind of ability is improved.

The technological scheme of the utility model is following: a kind of swirl type cold compressor, and comprise housing, support down, lower bearing, go up support, upper bearing (metal), motor stator, rotor and bent axle, upper bearing (metal) and lower bearing are installed on respectively and support and support down; Bent axle is supported on through upper bearing (metal) and lower bearing and supports and support down; By the metal (upper constraint, it is characterized in that: said swirl type cold compressor also comprises limited ring and inipple, and limited ring is an annulus that is sleeved on the bent axle; Limited ring is between the lower bearing inner ring and shoulder of crank of bent axle; Limited ring upper-end surface and shoulder of crank near, lower end and lower bearing inner ring upper end near, offer the limited ring breach on the limited ring lower end surface; Ring constitutes the lower bearing oil leab in the limited ring lower end surface inner edge chamfering, chamfer surface and bent axle and lower bearing; Said shoulder of crank is a fixed length to the length of upper bearing (metal) and bent axle cooperation position; Equal maximum motor rotor thickness and balance block length sum; The shaft shoulder of bent axle is a random length to the length of lower bearing and bent axle cooperation position, equals limited ring length and lower bearing thickness sum, and shoulder of crank one side end is one section threaded shaft section; The place, lower bearing upper edge of bent axle offers crankshaft oil hole, and lubricant oil flows out through oil duct from crankshaft oil hole and gets into lower bearing ball position from the limited ring breach; Said inipple is an inner screw sheath; The threads engaged of the threaded shaft section of internal thread and bent axle, inipple are installed in the threaded shaft section of bent axle, the upper-end surface of inipple and lower bearing inner ring lower end near; Behind the threaded together joint, bent axle, limited ring and the tightening of lower bearing inner ring are one.

The described a kind of swirl type cold compressor of the utility model is characterized in that the gap width on the said limited ring lower end surface is 1-5mm, and the degree of depth is 1-5mm, and the length of side of said limited ring lower end surface inner edge chamfering is the thick 1/3-3/4 of spacing ring wall.

The described a kind of swirl type cold compressor of the utility model is characterized in that the diameter of the crankshaft oil hole on the said bent axle is consistent with limited ring lower end surface inner edge chamfering height.

The described a kind of swirl type cold compressor of the utility model is characterized in that said upper bearing (metal) is rolling bearing or sliding bearing.

The described a kind of swirl type cold compressor of the utility model is characterized in that cooperating between said limited ring and the bent axle is interference fit, transition fit or Spielpassung.

The described a kind of swirl type cold compressor of the utility model; It is characterized in that two processing locating points that said bent axle is set; The locating point that locating point is located at bent axle is located at the upper bearing (metal) and the bent axle cooperation position of bent axle, and another locating point is located at the limited ring and the bent axle cooperation position place of bent axle.

Compared with prior art, the utlity model has following beneficial effect:

The bent axle axial locating surface does not have frictional loss, has improved the efficient of compressor; Can use anchor clamps to process the bent axle of multiple length dimension, improve manufacturing efficiency, make that optimizing the rating of electric machine becomes possibility; Lower bearing has lubrication channel easily and effectively, has reduced frictional loss, has improved working life.

Description of drawings

The utility model has accompanying drawing five width of cloth, wherein:

Fig. 1 is the utility model compressor section longitudinal cross-section schematic representation;

Fig. 2 is the local longitudinal cross-section of a limited ring schematic representation;

Fig. 3 is a limited ring longitudinal cross-section schematic representation;

Fig. 4 is the vertical schematic top plan view of limited ring;

Fig. 5 is the bent axle schematic representation.

Among the figure, 1, inipple, 2, circlip, 3, lower bearing, 4, support down; 5, limited ring, 6, equilibrium block, 7, rotor, 8, motor stator, 9, go up and support; 10, circlip, 11, upper bearing (metal), 12, bent axle, 13, the limited ring breach, 14, oil duct; 15, crankshaft oil hole, 16, shoulder of crank, 17, upper bearing (metal) and bent axle cooperation position, 18, limited ring and bent axle cooperation position.

Embodiment

The schematic accompanying drawing of following reference is described the mode of execution of shown this compressor, can understand the utility model better through these descriptions.

Compressor comprises: housing, support 4 down, lower bearing 3, on support 9, upper bearing (metal) 11, motor stator 8, rotor 7, bent axle 12, limited ring 5 and inipple 1, upper bearing (metal) 11 and lower bearing 3 be installed on respectively support 9 with support down on 4, bent axle 12 through upper bearing (metal) 11 and lower bearing 3 be supported on support 9 with following support 4 on; Retrained by metal (upper; Limited ring 5 is annulus that are sleeved on the bent axle 12, and cooperating between limited ring 5 and the bent axle 12 is interference fit, transition fit or Spielpassung, and limited ring 5 is between lower bearing 3 inner rings and shoulder of crank 16 of bent axle 12; Limited ring 5 upper-end surfaces and shoulder of crank 16 near; Lower end and lower bearing 3 inner rings upper end near, limited ring is offered limited ring breach 13 on 5 lower end surfaces, breach is offered the arbitrary position on limited ring 5 lower end surfaces; Gap width is 1-5mm; The degree of depth is 1-5mm, limited ring 5 lower end surface inner edge chamferings, and the length of side of chamfering is the 1/3-3/4 of limited ring 5 wall thickness; Shoulder of crank 16 is a fixed length to the length of upper bearing (metal) and bent axle cooperation position 17 shaft parts; Equal maximum motor rotor 7 thickness and equilibrium block 6 length sums; Shoulder of crank 16 is a random length to the length of lower bearing and bent axle cooperation position shaft part; Equal limited ring 5 length and lower bearing 3 thickness sums, shoulder of crank one side end is one section threaded shaft section, and the place, lower bearing upper edge of bent axle 12 offers crankshaft oil hole 15; The diameter of crankshaft oil hole 15 is consistent with limited ring 5 lower end surface inner edge chamfering height; Limited ring lower end surface inner edge chamfer surface, bent axle 12 and lower bearing 3 inner ring upper-end surfaces form lower bearing ball position oil leab 14, and lubricant oil flows out from crankshaft oil hole 15, get into lower bearing ball position through oil duct 14 from limited ring breach 13; Inipple 1 is an inner screw sheath, the threads engaged of the threaded shaft section of internal thread and bent axle 12, and inipple 1 is installed in the threaded shaft section of bent axle 12; The upper-end surface of inipple 1 and lower bearing 3 inner ring lower ends near; Behind the threaded together joint 1, bent axle 12 is fixed as one with limited ring 5 and lower bearing 3 inner rings, avoids rotation each other; Also just reduce friction, improved the efficient of compressor.Two processing locating points that bent axle 12 is set, a locating point is located at upper bearing (metal) and bent axle cooperation position 17, and another locating point is located at limited ring and bent axle cooperation position 18.

Fig. 1 shows this scroll compressor part longitdinal cross-section diagram.Under support lower bearing 3 be installed on 4, lower bearing 3 is a rolling bearing, with the fixing lower bearing 3 of circlip 2; In the last support 9 upper bearing (metal) 11 is installed, upper bearing (metal) 11 is a rolling bearing, with the fixing upper bearing (metal) 11 of circlip 10; Bent axle 12 passes metal (upper 11,3; Bent axle 12 shaft shoulders 16 are close to limited ring 5, and limited ring 5 other ends and lower bearing 3 inner ring end faces are close to, and bent axle 12 shaft shoulders one side end is provided with screw thread and inipple 1 is installed; Behind the threaded together joint 1, realize the location of bent axle 12 axial both directions; Rotor 7 is installed on the bent axle 12, between motor stator 8 is installed on up and down and supports 9,4; Equilibrium block 6 is installed on the bent axle 12, and at rotor 7 and down between the support 4.Shoulder of crank 16 arrives rotor 7 and the equilibrium block 6 sizes decision of the length of upper bearing (metal) and bent axle cooperation position 17 shaft parts by maximum specification, and constant; The length of limited ring and bent axle cooperation position 18 shaft parts cooperates corresponding change limited ring length to guarantee the position relation of

electric machine rotor

8,7 with different variation of motor stator 8 whole heights.Bent axle 12 adds man-hour; Position clamping at upper bearing (metal) and bent axle cooperation position 17 with limited ring and bent axle cooperation position 18 places; Because the length between these two some sites is definite value, just can process the bent axle of different length with anchor clamps, has improved manufacturing efficiency; Make that optimization design of electrical motor and Dimensions serializing are able to implement, can guarantee that finally different ability compressors can both be operated on the motor best efficiency point.

Fig. 3 Fig. 4 illustrate limited ring and on the lubricated access diagram of using of lower bearing.Bent axle 12 offers oilhole 15; Limited ring breach 13 is as lubricating oil outlet; Ring is formed oil duct 14 in end face inner edge chamfer surface that limited ring 5 and lower bearing 3 are close to and bent axle and the lower bearing, and lubricant oil gets into oil ducts 14 from crankshaft oil hole 15, passes through limited ring breach 13 again and arrives lower bearings 3 upper edges; Realize lubricated to lower bearing 3; Reduced friction, improved the efficient and the reliability of compressor, and limited ring 5 is assembled under the situation that does not have circumferential location.

Claims

1. swirl type cold compressor; Comprise housing, following support (4), lower bearing (3), go up and support (9), upper bearing (metal) (11), motor stator (8), rotor (7) and bent axle (12); Upper bearing (metal) (11) and lower bearing (3) are installed on support (9) respectively and support down on (4), and bent axle (12) is supported on support (9) through upper bearing (metal) (11) and lower bearing (3) and supports on (4) down, is retrained by metal (upper; It is characterized in that: said swirl type cold compressor also comprises limited ring (5) and inipple (1); Limited ring (5) is an annulus that is sleeved on the bent axle (12), and limited ring (5) is positioned between lower bearing (3) inner ring and shoulder of crank (16) of bent axle (12), limited ring (5) upper-end surface and shoulder of crank (16) near; Lower end and lower bearing (3) inner ring upper end near; Limited ring (5) is offered limited ring breach (13) on the lower end surface, limited ring (5) lower end surface inner edge chamfering, and ring constitutes lower bearing oil leab (14) in chamfer surface and bent axle (12) and the lower bearing (3); Said shoulder of crank (16) is a fixed length to the length of upper bearing (metal) and bent axle cooperation position (17); Equal maximum motor rotor (7) thickness and equilibrium block (6) length sum; Shoulder of crank (16) is a random length to the length of lower bearing and bent axle cooperation position; Equal limited ring (5) length and lower bearing (3) thickness sum; Shoulder of crank one side end is one section threaded shaft section, and the place, lower bearing (3) upper edge of bent axle (12) offers crankshaft oil hole (15), and lubricant oil flows out through oil duct (14) from crankshaft oil hole (15) and gets into lower bearing (3) ball position from limited ring breach (13); Said inipple (1) is an inner screw sheath; The threads engaged of the threaded shaft section of internal thread and bent axle (12); Inipple (1) is installed in the threaded shaft section of bent axle; The upper-end surface of inipple (1) and lower bearing (3) inner ring lower end near, behind the threaded together joint (1), bent axle (12), limited ring (5) and lower bearing (3) inner ring tightening are one.

2. a kind of swirl type cold compressor according to claim 1; It is characterized in that limited ring breach (13) width on said limited ring (5) lower end surface is 1-5mm; The degree of depth is 1-5mm, and the length of side of said limited ring (5) lower end surface inner edge chamfering is the 1/3-3/4 of limited ring (5) wall thickness.

3. a kind of swirl type cold compressor according to claim 1 is characterized in that the diameter of the crankshaft oil hole (15) on the said bent axle is consistent with the height of limited ring (5) lower end surface inner edge chamfering.

4. a kind of swirl type cold compressor according to claim 1 is characterized in that said upper bearing (metal) (11) is rolling bearing or sliding bearing.

5. a kind of swirl type cold compressor according to claim 1 is characterized in that cooperating between said limited ring (5) and the bent axle (12) is interference fit, transition fit or Spielpassung.

6. a kind of swirl type cold compressor according to claim 1; Two processing locating points that it is characterized in that said bent axle (12); A locating point is located at the upper bearing (metal) and the bent axle cooperation position (17) of bent axle (12), and another locating point is located at the limited ring and the bent axle cooperation position (18) of bent axle (12).