CN206190529U - Bent axle, pump body subassembly and compressor - Google Patents

Abstract

The utility model discloses a bent axle, pump body subassembly and compressor. This bent axle includes central pivot (1), first off -centre portion (2), second off -centre portion (3), disc baffle (18) and ring baffle (4), and disc baffle (18) are located between first off -centre portion (2) and the second off -centre portion (3) to with central pivot (1) integrated into one piece, ring baffle (4) cover is established outside disc baffle (18). According to the utility model discloses a bent axle can be avoided taking place between baffle and the roller to leak when strengthening the bent axle offset, improves the working property of compressor.

Description

Bent axle, pump assembly and compressor

Technical field

The utility model is related to gas compression compression technique area, in particular to a kind of bent axle, pump assembly and pressure Contracting machine.

Background technology

Two-spool compressor has cold big, the characteristics of smooth running, widely uses within air-conditioning systems.Existing double turns Sub- compressor is axially stacked up using two cylinders, and centre is separated using dividing plate.Bent axle has two eccentric parts, at two Roller is cased with eccentric part respectively.

For the miniaturization low-cost design of compressor, bigger discharge capacity need to be realized on relatively small compressor arrangement. Increase discharge capacity is mainly realized by increasing the offset of cylinder height, intensifying cylinder diameter and increasing bent axle at present.But Intensifying cylinder height, intensifying cylinder diameter need to amplify in structure, it is difficult to miniaturization and cost degradation are realized, while bent axle Stress increase, less reliable, thus increased by increasing offset can meet in the discharge capacity of compressor minimize it is low into This.

As shown in figure 1, after the increasing of crankshaft eccentric amount, in order that central dividing plate 2 ' can pass through one of eccentric part 1 ', central dividing plate 2 ' have to be larger than the external diameter of eccentric part 1 ', and because offset is excessive, can cause external diameter and the centre of roller 3 ' There is the gap shown in L between the through hole of dividing plate 2 ', refrigerant can be logical in the presence of altering by the gap at L during compression, The sealing of compressor chamber cannot be realized.

Have at present using central dividing plate is divided into two, the through hole in the middle of dividing plate is reduced by way of dividing plate splices Scheme, the program can also realize the sealing in large eccentricity amount crankshaft designs situation lower clapboard and roller simultaneously.But above-mentioned adopts Split with dividing plate and be spliced to form a mode for intact diaphragm again, there is processing difficulties, part processing and assembly precision requirement pole It is high, it is difficult to the problem of production in enormous quantities, while easily there is seam in stitching portion, leakage is caused, cause sealing property to reduce, together When two pieces of splicings divider height be difficult to identical, there is certain difference in height, be unfavorable for roller free-running in separator face.

Utility model content

A kind of bent axle, pump assembly and compressor are provided in the utility model embodiment, crankshaft eccentric amount can increased While avoid being leaked between dividing plate and roller, improve compressor service behaviour.

To achieve the above object, the utility model embodiment provides a kind of bent axle, including central rotating shaft, the first eccentric part, Second eccentric part, disk dividing plate and annulus dividing plate, disk dividing plate are located between the first eccentric part and the second eccentric part, and and center Rotating shaft is integrally formed, and annulus dividing plate is set in outside disk dividing plate.

Preferably, disk dividing plate coordinates with annulus spacer gap.

Preferably, the relation between the internal diameter Φ B of annulus dividing plate and the external diameter Φ D of disk dividing plate meets (Φ B- Φ D)> 0.01mm。

Preferably, the thickness of disk dividing plate is H1, the thickness of annulus dividing plate is H2, and (H2-H1) is met between H2 and H1> 0.01mm。

According to another aspect of the present utility model, there is provided a kind of pump assembly, including bent axle, upper cylinder and lower cylinder, Bent axle is above-mentioned bent axle, and upper cylinder is set in outside the first eccentric part, and lower cylinder is set in outside the second eccentric part.

Preferably, the relation between the external diameter Φ D of disk dividing plate and the internal diameter Φ C of cylinder meets (Φ D- Φ C)>2mm.

Preferably, disk baffle interval is arranged between upper cylinder and lower cylinder, and coordinate with upper cylinder gap.

Preferably, the outer circumferential side of the inner circumferential side of annulus dividing plate or disk dividing plate is provided with the logical oil groove of annular, lead to oil Groove is connected by logical oil passage with oil sump.

Preferably, the inner circumferential side of annulus dividing plate is provided with logical oil groove, it is to extend radially through annulus dividing plate to lead to oil passage Oil through.

Preferably, being bolted to connection between upper cylinder, annulus dividing plate and lower cylinder.

Preferably, the periphery wall upper end of disk dividing plate is provided with the first increasing enthalpy groove connected with the compression chamber of upper cylinder, Increasing enthalpy hole is provided with annulus dividing plate, the bottom of upper cylinder is provided with the first connection that the first increasing enthalpy groove is connected with increasing enthalpy hole and leads to Road, and/or the periphery wall lower end of disk dividing plate is provided with the second increasing enthalpy groove connected with the compression chamber of lower cylinder, on annulus dividing plate Increasing enthalpy hole is provided with, the second communicating passage that the second increasing enthalpy groove is connected with increasing enthalpy hole is provided with the top of lower cylinder.

Preferably, being provided with the first increasing enthalpy groove and the second increasing enthalpy groove on disk dividing plate, increasing enthalpy hole is threeway increasing enthalpy hole, three Logical increasing enthalpy hole includes the entrance for radially extending and the first outlet, the second outlet that are connected with entrance, and wherein first outlet passes through First communicating passage is connected with the first increasing enthalpy groove, and second outlet is connected by the second communicating passage with the second increasing enthalpy groove.

Preferably, the first communicating passage and the second communicating passage are arc groove.

Preferably, being provided with the first vane slot on upper cylinder, the second vane slot is provided with lower cylinder, the first connection is logical Angle between the initiating terminal in road and the first vane slot is θ 1, and the angle between the second communicating passage and the second vane slot is θ 2, Wherein 30 °<θ1<80°；30°<θ2<80°.

Preferably, the angular range of the first communicating passage is 30 °<β1<100°；The angular range of the second communicating passage is 30°<β2<100°。

According to another further aspect of the present utility model, there is provided a kind of compressor, including pump assembly, the pump assembly is upper The pump assembly stated.

Preferably, compressor is duplex cylinder compressor, multicylinder compressor or compound compressor.

Using the technical solution of the utility model, bent axle includes central rotating shaft, the first eccentric part, the second eccentric part, disk Dividing plate and annulus dividing plate, disk dividing plate are located between the first eccentric part and the second eccentric part, and are integrally formed with central rotating shaft, circle Ring dividing plate is set in outside disk dividing plate.The dividing plate of the bent axle includes disk dividing plate and annulus dividing plate, disk dividing plate and central rotating shaft It is integrally formed, hence in so that dividing plate center can be entity, the first eccentric part or the second eccentric part is passed through during installation without leaving Required mounting hole, it is to avoid the mounting hole is excessive and causes fit clearance occur between dividing plate and roller mounting hole to leak, Installation due to the first eccentric part and the second eccentric part to dividing plate is not impacted, hence in so that what the offset of bent axle can do It is very big, compressor displacement can be effectively improved.Because disk dividing plate and central rotating shaft are integrally formed, therefore without being carried out to dividing plate Splicing, also reduces the difficulty of processing of dividing plate so that more preferably, the conformability with cylinder is preferable, improves compression for the globality of dividing plate The service behaviour of machine.

Brief description of the drawings

Fig. 1 is the cross section structure diagram of pump assembly of the prior art；

Fig. 2 is the cross section structure diagram of the compressor of the utility model first embodiment；

Fig. 3 is the stereochemical structure of the annulus dividing plate of the bent axle of the compressor pump component of the utility model first embodiment Figure；

Fig. 4 is the three-dimensional structure diagram of the bent axle of the compressor pump component of the utility model first embodiment；

Fig. 5 is the sectional structure chart of the compressor pump component of the utility model first embodiment；

Fig. 6 is the mplifying structure schematic diagram at the Q of Fig. 5；

Fig. 7 is the structure chart of the compressor of the utility model second embodiment；

Fig. 8 is the matching chart of the cylinder with dividing plate of the compressor pump component of the utility model second embodiment；

Fig. 9 is the decomposition chart of the compressor pump component of the utility model second embodiment；

Figure 10 is first motion of the dividing plate with cylinder cooperation of the compressor pump component of the utility model second embodiment Structure chart；

Figure 11 is second motion of the dividing plate with cylinder cooperation of the compressor pump component of the utility model second embodiment Structure chart；

Figure 12 is threeth motion of the dividing plate with cylinder cooperation of the compressor pump component of the utility model second embodiment Structure chart.

Description of reference numerals：1st, central rotating shaft；2nd, the first eccentric part；3rd, the second eccentric part；4th, annulus dividing plate；5th, upper gas Cylinder；6th, lower cylinder；7th, oil groove is led to；8th, oil through；9th, bolt；10th, the first increasing enthalpy groove；11st, the second increasing enthalpy groove；12nd, the first connection Passage；13rd, the second communicating passage；14th, threeway increasing enthalpy hole；15th, the first vane slot；16th, the second vane slot；17th, housing；18th, circle Disk dividing plate；.

Specific embodiment

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as to this practicality New restriction.

With reference to shown in referring to Fig. 3 and Fig. 4, according to embodiment of the present utility model, bent axle includes that central rotating shaft 1, first is inclined Center portion 2, the second eccentric part 3, disk dividing plate 18 and annulus dividing plate 4, disk dividing plate 18 are located at the first eccentric part 2 and the second eccentric part Between 3, and it is integrally formed with central rotating shaft 1, annulus dividing plate 4 is set in outside disk dividing plate 18.

The dividing plate of the bent axle includes 4 two parts of disk dividing plate 18 and annulus dividing plate, disk dividing plate 18 and central rotating shaft 1 one It is body formed, hence in so that dividing plate center can be entity, the first eccentric part 2 or the second eccentric part 3 are passed through during installation without leaving Required mounting hole, it is to avoid the mounting hole is excessive and cause to occur between dividing plate and roller mounting hole fit clearance refrigerant occur to let out Leakage, the installation due to the first eccentric part 2 and the second eccentric part 3 on dividing plate does not result in influence, hence in so that the offset of bent axle Can be made thin big, compressor displacement can be effectively improved.Because disk dividing plate 18 is integrally formed with central rotating shaft 1, therefore nothing Dividing plate need to be spliced, also reduce the difficulty of processing of dividing plate so that the globality of dividing plate more preferably, with the conformability of cylinder compared with It is good, improve the service behaviour of compressor.

It is rotatably assorted between annulus dividing plate 4 and disk dividing plate 18 so that annulus dividing plate can be with other portions of pump assembly Divide and be fixedly connected, while not interfering with rotation of the disk dividing plate 18 with central rotating shaft 1 again so that dividing plate can integrally be played very well Installation fixation and segregation.

Preferably, disk dividing plate 18 coordinates with the gap of annulus dividing plate 4, can reduce disk dividing plate 18 with the phase of annulus dividing plate 4 To the abrasive action occurred in rotation process, making for both the deterioration of disk dividing plate 18 and annulus dividing plate 4, extension is reduced With the life-span, while gap between the two also enables lubricating oil preferably to enter into both relative motion surfaces and carries out Lubrication, improves the service behaviour of disk dividing plate 18 and annulus dividing plate 4.

Preferably, the relation between the internal diameter Φ B of annulus dividing plate 4 and the external diameter Φ D of disk dividing plate 18 meets Φ B- Φ D> 0.01mm so that there is enough gaps, it is to avoid both mutually transport between the internal diameter of annulus dividing plate 4 and the external diameter of disk dividing plate 18 There is frictional dissipation during dynamic.The gap should also limit within limits, it is to avoid gap it is excessive and influence disk every Circumferential fiting effect between plate 18 and annulus dividing plate 4.

The thickness of disk dividing plate 18 is H1, and the thickness of annulus dividing plate 4 is H2, and H2-H1 is met between H2 and H1>0.01mm. Because the thickness of annulus dividing plate 4 is thicker than the thickness of disk dividing plate 18, therefore can be by between annulus dividing plate 4 and upper and lower air cylinders Cooperation avoid being contacted between disk dividing plate 18 and upper cylinder so that can exist between disk dividing plate 18 and the end face of upper cylinder Gap, it is to avoid disk dividing plate 18 rotates friction during being rotated with central rotating shaft 1 between upper cylinder, reduction disk every The abrasion that may occur between plate 18 and upper cylinder, the service life of extension disk dividing plate 18, while needed for reducing crank rotation Power, reduce added power dissipation, improve bent axle rotational efficienty.

With reference to shown in referring to Fig. 2, Fig. 5 and Fig. 6, according to the first embodiment of pump assembly of the present utility model, pump housing group Part includes bent axle, upper cylinder 5 and lower cylinder 6, and bent axle is above-mentioned bent axle, and upper cylinder 5 is set in outside the first eccentric part 2, lower gas Cylinder 6 is set in outside the second eccentric part 3.In the pump assembly, upper cylinder 5 and lower cylinder 6 are engaged with disk dividing plate 18, to disk Dividing plate 18 forms the spacing of axial direction, meanwhile, annulus dividing plate 4 is fixedly connected with upper cylinder 5 and lower cylinder 6, to disk dividing plate 18 form spacing in circumferential direction, so that bent axle can be supported on the upper surface of lower cylinder 6 by disk dividing plate 18, Can stablize and positioning is installed.

Preferably, the relation between the external diameter Φ D of disk dividing plate 18 and the internal diameter Φ C of cylinder meets Φ D- Φ C>2mm, makes The external diameter of disk dividing plate 18 can be more than the internal diameter of cylinder, cylinder bore diameter herein in upper cylinder 5 and lower cylinder 6 internal diameter compared with Big person.Due to the internal diameter of the external diameter more than cylinder of disk dividing plate 18, and beyond the internal diameter certain thickness of cylinder, hence in so that disk Dividing plate 18 can have enough diameters to avoid being altered and the internal diameter of cylinder between logical, prevent refrigerant from disk dividing plate 18 and gas Revealed between the inner chamber of cylinder, improve the stability and reliability of fit structure between bent axle and cylinder.

Disk dividing plate 18 is disposed between upper cylinder 5 and lower cylinder 6, and is coordinated with the gap of upper cylinder 5.This kind of structure Under, then the spacing for needing the thickness of disk dividing plate 18 to be less than between the lower surface of upper cylinder 5 and the upper surface of lower cylinder 6, now The bottom of disk dividing plate 18 is supported by the upper surface of lower cylinder 6 so that bent axle has good axial positioning structure.Certainly, Can also make to be gap cooperation between disk dividing plate 18 and upper cylinder 5 and lower cylinder 6, now the axially position of bent axle is mainly led to The cooperation crossed between the second eccentric part 3 and bottom end cover 27 is realized.

Preferably, the outer circumferential side of the inner circumferential side of annulus dividing plate 4 or disk dividing plate 18 is provided with the logical oil groove 7 of annular, leads to Oil groove 7 is connected by logical oil passage with oil sump.During disk dividing plate 18 is rotated, the fluid inside oil sump can be by logical Oily passage is entered into logical oil groove 7, and the circumferential mating surface in annulus dividing plate 4 and disk dividing plate 18 is distributed then along logical oil groove 7 On, cooling is lubricated to annulus dividing plate 4 and being rotatably assorted for disk dividing plate 18.Logical oily passage herein is arranged on annulus dividing plate On 4, because annulus dividing plate 4 is fixedly connected with upper cylinder 5 and lower cylinder 6, therefore fluid in oil sump can stably through logical oil Passage is transported at logical oil groove 7, it is ensured that the steady and continuous supply of lubricating oil.

In the present embodiment, the inner circumferential side of annulus dividing plate 4 is provided with logical oil groove 7, and logical oil passage is to extend radially through annulus The oil through 8 of dividing plate 4.Because oil through 8 extends radially through annulus dividing plate 4, hence in so that the fluid outside pump assembly can With in the logical oil groove 7 in the inner circumferential side that annulus dividing plate 4 is easily entered into from oil through 8.Enter for the ease of fluid, oil through 8 Can obliquely be inclined along fluid flow direction.

Preferably, it is fixedly connected by bolt 9 between upper cylinder 5, annulus dividing plate 4 and lower cylinder 6, upper cylinder can be improved 5th, the stability of the attachment structure between annulus dividing plate 4 and lower cylinder 6, while more efficient can ensure that three directly connects Sealing, improves the service behaviour of pump assembly.

According to the pump assembly of the present embodiment, bent axle has disk dividing plate between the first eccentric part 2 and the second eccentric part 3 18, the central rotating shaft 1 of disk dividing plate 18 and bent axle is an entirety, can be rotated together with central rotating shaft 1.In the He of upper cylinder 5 Annulus dividing plate 4 is installed between lower cylinder 6, the disk dividing plate 18 of bent axle be positioned between upper cylinder 5 and lower cylinder 6.Bent axle The cylindrical of disk dividing plate 18 be placed in the inner circle of annulus dividing plate 4, the inner circle of the cylindrical and annulus dividing plate 4 of disk dividing plate 18 is to match somebody with somebody in gap Close.Wherein the external diameter of disk dividing plate 18 is Φ D, less than the inner circle diameter of phi B of annulus dividing plate 4, and more than upper cylinder 5 and lower gas The internal diameter Φ C of cylinder 6.Size relationship is Φ B- Φ D>0.01mm, Φ D- Φ C>2mm.According to dimensions above relation, the disk of bent axle The lower surface of dividing plate 18 can be supported on the upper surface of lower cylinder 6.The thickness of this outer disc dividing plate 18 is H1, annulus dividing plate 4 Thickness be H2, H2-H1>0.01mm.That is, the disk dividing plate 18 of bent axle is positioned between upper cylinder 5 and lower cylinder 6, Be constrained in the axial direction in the middle of two end faces of upper and lower air cylinders, be constrained in the circumferential annulus dividing plate 4 inner circle it In.

Upper roller and lower roller are respectively sleeved on first eccentric part 2 and the second eccentric part 3 of bent axle in addition, and upper roller is with Roller is separated by the disk dividing plate 18 of bent axle.Upper roller rotates with the first eccentric part of bent axle 2, by the disk of bent axle every The inner circle sealing of the upper surface, upper bearing (metal) lower surface and upper cylinder 5 of plate 18, forms a upper compression chamber, upper slide plate and upper rolling Son is cylindrical to be fitted, and upper compression chamber is divided into high pressure chest and low pressure chamber, it is possible to achieve the compression of refrigerant is carried out in upper cylinder 5. Similarly, lower roller rotates with the second eccentric part of bent axle 3, by the lower surface of the disk dividing plate 18 of bent axle, lower bearing it is upper The inner circle sealing of end face and lower cylinder 6, forms a upper compression chamber, and upper slide plate fits with the cylindrical of upper roller, will push Contracting chamber is divided into high pressure chest and low pressure chamber, it is possible to achieve the compression of refrigerant is carried out in lower cylinder 6.

Thus, by forming knot integrated with central rotating shaft 1 between first eccentric part 2 and the second eccentric part 3 of bent axle The disk dividing plate 18 of structure, axial support is realized by the upper surface that the lower surface of disk dividing plate 18 is supported on lower cylinder 6, while also The cavity volume of upper cylinder 5 and lower cylinder 6 is separated by disk dividing plate 18, realizes two compression chambers, and ensure that every Coolant leakage will not occur between plate and cylinder.

Also to ensure that the cylindrical inner circle with annulus dividing plate 4 of the disk dividing plate 18 of bent axle, and upper and lower air cylinders end face it Between lubrication, the inner circle of annulus dividing plate 4 is provided with the logical oil groove 7 of annular, the logical oil groove 7 of annular passes through oil through 8 It is connected with the oil sump outside the pump housing, the lubrication of axial and circumferential when so both ensure that the disk dividing plate 18 of bent axle rotated, The sealing between mating surface is ensure that, reduces the gas blowby leakage between upper and lower air cylinders.

By above-mentioned the utility model structure, in duplex cylinder compressor, by the first eccentric part 2 and second in bent axle The disk dividing plate 18 integrated with central rotating shaft 1 is formed between eccentric part 3, bent axle can be made to obtain very big expansion, improve Machine volume is effectively compressed, and solves cylindrical and between dividing plate inner circle the leakage of roller after Conventional press offset is increased and asked Topic, realizes miniaturization and the low cost of compressor.

With reference to referring to shown in Fig. 7 to Figure 12, according to the second embodiment of pump assembly of the present utility model, itself and pump housing group The basic structure of the first embodiment of part is identical, and difference is in the present embodiment, to increase on the basis of first embodiment The air injection enthalpy-increasing structure to upper cylinder 5 and/or lower cylinder 6 is added, it is possible to achieve twin-tub increasing enthalpy is run, and can further lift pressure The refrigerating capacity and efficiency of contracting machine.

In the present embodiment, the periphery wall upper end of disk dividing plate 18 is provided with first connected with the compression chamber of upper cylinder 5 Increasing enthalpy groove 10, is provided with increasing enthalpy hole on annulus dividing plate 4, the bottom of upper cylinder 5 is provided with and connects the first increasing enthalpy groove 10 and increasing enthalpy hole The first logical communicating passage 12, and/or the periphery wall lower end of disk dividing plate 18 is provided with connected with the compression chamber of lower cylinder 6 Two increasing enthalpy grooves 11, are provided with increasing enthalpy hole on annulus dividing plate 4, the top of lower cylinder 6 is provided with the second increasing enthalpy groove 11 and increasing enthalpy hole Second communicating passage 13 of connection.

In the present embodiment, the first increasing enthalpy groove 10 and the second increasing enthalpy groove 11 are provided with disk dividing plate 18, increasing enthalpy hole is three Logical increasing enthalpy hole 14, threeway increasing enthalpy hole 14 includes the entrance for radially extending and the first outlet, the second outlet that are connected with entrance, its Middle first outlet is connected by the first communicating passage 12 with the first increasing enthalpy groove 10, and second outlet is by the second communicating passage 13 and the Two increasing enthalpy grooves 11 are connected.Threeway increasing enthalpy hole 14 herein can by entrance by extraneous Gas-supplying enthalpy-increasing refrigerant be linked into annulus every On plate 4, then Gas-supplying enthalpy-increasing refrigerant is divided into two strands in bifurcated mouth, and a stock-traders' know-how first outlet, the first communicating passage 12 and first increase Enthalpy groove 10 is entered into the compression chamber of upper cylinder 5, and another stock-traders' know-how second outlet, the second communicating passage 13 and the second increasing enthalpy groove 11 enter Enter in the compression chamber of lower cylinder 6, complete the Gas-supplying enthalpy-increasing to compressor.Gas-supplying enthalpy-increasing, Neng Gouyou are carried out by compressor Effect improves the refrigerating capacity and work efficiency of compressor.

Preferably, the first communicating passage 12 and the second communicating passage 13 are arc groove, can make the first communicating passage 12 and second the shape of communicating passage 13 match with the cavity shape of cylinder where it so that the increasing enthalpy of Gas-supplying enthalpy-increasing refrigerant Process stabilization is uniform, and enthalpy-increasing effect is good, improves the efficiency of Gas-supplying enthalpy-increasing.

Preferably, the first vane slot 15 is provided with upper cylinder 5, the second vane slot 16 is provided with lower cylinder 6, first connects Angle between the initiating terminal of circulation passage 12 and the first vane slot 15 is θ 1, between the second communicating passage 13 and the second vane slot 16 Angle be θ 2, wherein 30 °<θ1<80°；30°<θ2<80°.The pressure that this kind of structure can be effectively ensured in compressor chamber reaches During to increasing enthalpy pressure, the first increasing enthalpy groove 10 and the first communicating passage 12 can be kept apart, or by the He of the second increasing enthalpy groove 11 Second communicating passage 13 is kept apart, and prevents compression refrigerant toward increasing enthalpy mouthful adverse current, improves the stability of Gas-supplying enthalpy-increasing.

Preferably, the angular range of the first communicating passage 12 is 30 °<β1<100°；The angular range of the second communicating passage 13 It is 30 °<β2<100°.This structure can allow the first communicating passage 12 and the second communicating passage 13 there is enough length to expire Foot injection increasing enthalpy requirement, improves the Gas-supplying enthalpy-increasing ability of compressor, strengthens the Gas-supplying enthalpy-increasing effect of compressor.

It is of course also possible to Gas-supplying enthalpy-increasing only is carried out at upper cylinder 5 or at lower cylinder 6, so as to reduce processing Technology difficulty.

In the pump assembly of the present embodiment, the upper of compressor is separately flowed into by the low pressure Ps refrigerants after evaporator 19 The air entry of cylinder 5 and lower cylinder 6, after upper cylinder 5 and the air-breathing of lower cylinder 6 terminate, when preparing to start compression refrigerant, with warp The middle pressure Pm refrigerants of the increasing enthalpy pipeline inflow entrance in threeway increasing enthalpy hole 14 are mixed, and then be compressed into for mixed refrigerant by roller High pressure refrigerant, condenser 20 is entered after finally discharging compressor, hereafter by entering flash vessel after the throttling of one-level throttle mechanism 21 By shwoot in 23, middle pressure Pm gaseous coolants flow into increasing enthalpy pipeline, by magnetic valve 24 and check valve 25, then by threeway increasing enthalpy The increasing enthalpy pipeline inflow entrance in hole 14 is mixed into the compression chamber of upper and lower air cylinders with low pressure Ps refrigerants.Liquid in flash vessel 23 Refrigerant then enters evaporator 19 after two-step throttle mechanism 22 throttles, and enters back into the air entry of upper and lower air cylinders, so far, completes One circulation of refrigerant.In order to realize above-mentioned spray enthalpy function, it is described to realizing the design of part of the function below.

In the present embodiment, the first increasing enthalpy groove is offered respectively at the outer circle in upper and lower end face of the disk dividing plate 18 of bent axle 10 and the second increasing enthalpy groove 11, the threeway increasing enthalpy hole 14 of junctions type is offered in the side of annulus dividing plate 4, in leaning on for upper cylinder 5 The lower surface of crank disk dividing plate 18 is provided with one section of arc groove with circular introducing port, i.e. the first communicating passage 12, under The upper surface by crank disk dividing plate 18 of cylinder 6 is provided with one section of arc groove with circular introducing port, i.e., the second connection is logical Road 13.After annulus dividing plate 4 and upper and lower cylinder layer closed assembly are matched somebody with somebody, the threeway increasing enthalpy hole 14 of the junctions type of annulus dividing plate 4 can be same The arc groove of the band circle introducing port of upper and lower cylinder is connected.The arc groove starting point position of the band circle introducing port of upper cylinder 5 The angle for putting same cylinder vane slot is θ 1, and the angle of arc groove is β 1, the arc groove starting point of the band circle introducing port of lower cylinder 6 Position is θ 2 with the angle of cylinder vane slot, and the angle of arc groove is β 2, and above-mentioned angle need to be according to compressor actual motion Operating mode is specifically set.During bent axle roller rotary motion, the first increasing enthalpy at the outer circle in upper and lower end face of crank disk dividing plate 18 Position relationship such as Fig. 8 institutes that the increasing enthalpy groove 11 of groove 10 and second is connected with the arc groove of the band circle introducing port of upper and lower cylinder Show.

Referring to shown in Fig. 9 to Figure 11, by taking lower cylinder 6 as an example, with the rotation of bent axle, roller is rolling across the suction of lower cylinder 6 After gas port, compressor compresses chamber is separated with the air entry of lower cylinder by lower roller, and compression, cylinder are now just started in compressor chamber Interior pressure Pd is low pressure Ps, Pd<Pm, now the second increasing enthalpy groove 11 of crank disk dividing plate 18 connect logical with the second of lower cylinder 6 Road 13 starts to be connected, and the middle pressure refrigerant from increasing enthalpy pipeline inflow entrance can just be injected into the compression chamber of lower cylinder 6, realizes Gas-supplying enthalpy-increasing during compressor.Figure be roller by the second communicating passage 13 during, now in cylinder refrigerant warp Pressure Pd has risen after crossing certain compression, but still Pd<Pm, the middle pressure refrigerant from increasing enthalpy pipeline inflow entrance is still injected into Enter the compression chamber of cylinder, the coolant quantity for being injected into cylinder compression chamber is reduced.Work as Pd>During Pm, the second of crank disk dividing plate 18 After increasing enthalpy groove 11 is separated with the second communicating passage 13 of lower cylinder 6, the middle pressure refrigerant from increasing enthalpy pipeline inflow entrance cannot The compression chamber of cylinder is being injected into, hereafter increasing enthalpy cut-off.Now constantly be compressed the mixing refrigerant in cylinder by roller, directly After reaching exhaust back pressure, cylinder is discharged, refrigerant enters back into outer loop.The increasing enthalpy process of upper cylinder 5 as lower cylinder 6, Simply phase differs 180 °.

To realize the air injection enthalpy-increasing during this compressor operating, it is preferred that emphasis is the arc of the band circle introducing port of upper cylinder 5 Connected in star start position with cylinder vane slot angle theta 1, the angle β 1 of arc groove, and lower cylinder 6 band circle introducing port Arc groove start position with cylinder vane slot angle theta 2, the setting of the angle β 2 of arc groove.Also need to coordinate first to increase simultaneously The position of the increasing enthalpy groove 11 of enthalpy groove 10 and second, it is ensured that after the air entry of cylinder compression chamber and cylinder is separated by roller, first Increasing enthalpy groove 10 can be connected with the first communicating passage 12 on upper cylinder 5 and carry out injection increasing enthalpy, and the second increasing enthalpy groove 11 can be with lower cylinder 6 On the second communicating passage 13 connection carry out injection increasing enthalpy.Simultaneously when ensureing that the pressure in compressor chamber reaches increasing enthalpy pressure, The first communicating passage 12 on the first increasing enthalpy groove 10 and upper cylinder 5 is set to separate, on the energy of the second increasing enthalpy groove 11 and lower cylinder 6 Second communicating passage 13 is separated, and prevents compression refrigerant toward increasing enthalpy mouthful adverse current.

Thus, cylinder completes complete air-breathing, increasing enthalpy, compression, an exhaust cycle.By the spray enthalpy knot of the present embodiment Structure, realizes the increase of refrigerating effect per unit swept volume, and efficiency is effectively raised, and overcomes traditional single stage increasing enthalpy rotary compression The increasing enthalpy gas and low pressure Ps air-breathings that machine is present alter logical problem.

With reference to shown in Figure 2, according to embodiment of the present utility model, compressor includes pump assembly, the pump assembly It is above-mentioned pump assembly.

Compressor is, for example, duplex cylinder compressor, multicylinder compressor or compound compressor etc..

The compressor when compressor is for rotation, rotary compressor includes housing 17, motor stator, rotor and the pump housing Component, is provided with blast pipe on the cover assembly of housing 17, motor stator is fixed in housing 17, and motor stator is fixed on housing 17 inwalls, rotor is fixed on the bent axle of pump assembly, is placed in inner hole of motor stator, and pump assembly is fixedly welded on On housing 17.Pump assembly includes upper end cover 26, upper bearing (metal), lower bearing, upper cylinder 5, dividing plate, lower cylinder 6, bottom end cover 27 and song Axle, is provided with upper cylinder 5 and lower cylinder 6 between upper bearing (metal) and lower bearing, have in the middle of upper cylinder 5 and lower cylinder 6 annulus every Plate 4 is separated.Roller and lower roller are separately installed with upper cylinder 5 and lower cylinder 6, upper roller and lower roller are respectively sleeved in song First eccentric part 2 and the second eccentric part 3 of axle.Be provided with knockout part outside housing 17, the bend pipe of knockout part two with Upper cylinder 5 is connected with the air entry of lower cylinder 6.Lower cover and mounting base are installed in the bottom of housing 17, top is provided with lid Component, so forms an airtight cavity.During compressor operating, refrigerant is sucked from knockout part, refrigerant is into entering in cylinder Row compression, the high pressure refrigerant after compression enters in the chamber of housing 17, and by opening between motor stator and rotor and turns Subflow through hole enters motor upper cavity, and refrigerant finally discharges compressor from upper lid blast pipe, into air-conditioning system.

Certainly, above is preferred embodiment of the present utility model.It should be pointed out that for the ordinary skill of the art For personnel, on the premise of the utility model general principle is not departed from, some improvements and modifications can also be made, these improvement Protection domain of the present utility model is also considered as with retouching.

Claims (17)

1. a kind of bent axle, it is characterised in that including central rotating shaft (1), the first eccentric part (2), the second eccentric part (3), disk every Plate (18) and annulus dividing plate (4), the disk dividing plate (18) is positioned at first eccentric part (2) and second eccentric part (3) Between, and be integrally formed with the central rotating shaft (1), the annulus dividing plate (4) is set in the disk dividing plate (18) outward.

2. bent axle according to claim 1, it is characterised in that between the disk dividing plate (18) and the annulus dividing plate (4) Gap coordinates.

3. bent axle according to claim 2, it is characterised in that the internal diameter Φ B of the annulus dividing plate (4) and the disk every Relation between the external diameter Φ D of plate (18) meets (Φ B- Φ D)>0.01mm.

4. bent axle according to claim 2, it is characterised in that the thickness of the disk dividing plate (18) is H1, the annulus The thickness of dividing plate (4) is H2, and (H2-H1) is met between H2 and H1>0.01mm.

5. a kind of pump assembly, it is characterised in that including bent axle, upper cylinder (5) and lower cylinder (6), the bent axle will for right The bent axle any one of 1 to 4 is sought, the upper cylinder (5) is set in first eccentric part (2) outward, the lower cylinder (6) It is set in second eccentric part (3) outward.

6. pump assembly according to claim 5, it is characterised in that the external diameter Φ D of the disk dividing plate (18) with it is described Relation between the internal diameter Φ C of cylinder meets (Φ D- Φ C)>2mm.

7. pump assembly according to claim 5, it is characterised in that the disk dividing plate (18) is disposed on described Between cylinder (5) and the lower cylinder (6), and coordinate with the upper cylinder (5) gap.

8. pump assembly according to claim 5, it is characterised in that the inner circumferential side or described of the annulus dividing plate (4) The outer circumferential side of disk dividing plate (18) is provided with the logical oil groove (7) of annular, and the logical oil groove (7) is connected by logical oil passage and oil sump It is logical.

9. pump assembly according to claim 8, it is characterised in that the inner circumferential side of the annulus dividing plate (4) is set Logical oil groove (7) is stated, the logical oily passage is the oil through (8) for extending radially through the annulus dividing plate (4).

10. pump assembly according to claim 5, it is characterised in that the upper cylinder (5), the annulus dividing plate (4) and It is fixedly connected by bolt (9) between the lower cylinder (6).

11. pump assembly according to any one of claim 5 to 10, it is characterised in that the disk dividing plate (18) Periphery wall upper end is provided with the first increasing enthalpy groove (10) connected with the compression chamber of the upper cylinder (5), on the annulus dividing plate (4) Increasing enthalpy hole is provided with, the bottom of the upper cylinder (5) is provided with the first increasing enthalpy groove (10) is connected with the increasing enthalpy hole First communicating passage (12), and/or the periphery wall lower end of the disk dividing plate (18) is provided with compression with the lower cylinder (6) Second increasing enthalpy groove (11) of chamber connection, is provided with increasing enthalpy hole on the annulus dividing plate (4), the top of the lower cylinder (6) is set There is the second communicating passage (13) that the second increasing enthalpy groove (11) is connected with the increasing enthalpy hole.

12. pump assemblies according to claim 11, it is characterised in that described is provided with the disk dividing plate (18) One increasing enthalpy groove (10) and the second increasing enthalpy groove (11), the increasing enthalpy hole are threeway increasing enthalpy hole (14), the threeway increasing enthalpy hole (14) first outlet, the second outlet connected including the entrance that radially extends and with the entrance, wherein the first outlet Connected with the first increasing enthalpy groove (10) by first communicating passage (12), the second outlet is connected by described second Passage (13) is connected with the second increasing enthalpy groove (11).

13. pump assemblies according to claim 12, it is characterised in that first communicating passage (12) and described second Communicating passage (13) is arc groove.

14. pump assemblies according to claim 13, it is characterised in that be provided with the first slide plate on the upper cylinder (5) Groove (15), is provided with the second vane slot (16) on the lower cylinder (6), the initiating terminal of first communicating passage (12) with it is described Angle between first vane slot (15) is θ 1, the folder between second communicating passage (13) and second vane slot (16) Angle is θ 2, wherein 30 °<θ1<80°；30°<θ2<80°.

15. pump assemblies according to claim 13, it is characterised in that the angular range of first communicating passage (12) It is 30 °<β1<100°；The angular range of second communicating passage (13) is 30 °<β2<100°.

A kind of 16. compressors, including pump assembly, it is characterised in that the pump assembly is any one of claim 5 to 15 Described pump assembly.

17. compressors according to claim 16, it is characterised in that the compressor is duplex cylinder compressor, multi-cylinder compression Machine or compound compressor.