CN209414106U - Compressor and refrigerating plant with it - Google Patents

Abstract

The utility model provides a kind of compressor and the refrigerating plant with it.Compressor includes cylinder block, and cylinder block has axis hole, and cylinder block has the connecting side for installing the working side of piston and for connecting with stator；First bearing, first bearing are connected with working side and are coaxially disposed with axis hole；Second bearing, second bearing are connected with working side, and the internal diameter of second bearing is greater than the outer diameter of first bearing, so as to form installation space between the inner peripheral surface of second bearing and the outer peripheral surface of first bearing.Shaft is supported and is limited by the way that first bearing and second bearing are arranged on cylinder block, shaft can be effectively prevented to bend in the course of rotation, then the abrasion between shaft and cylinder block is reduced, the reliability and compression performance of compressor are effectively improved.

Description

Compressor and refrigerating plant with it

Technical field

The utility model relates to technical field of refrigeration equipment, in particular to a kind of compressor and with its refrigeration Device.

Background technique

It is designed with cylinder-bore and bearing hole on existing piston compressor cylinder block, the bearing portions to play a major role to load It is arranged on the bearing hole cooperated with shaft.At present piston compressor light-duty commercial kitchen area (such as showcase, supermarket's island cabinet, from Dynamic vending machine etc.) application is more and more, and field environment temperature with domestic refrigerator compared with is higher, and load is bigger, and environment is more severe. Since shaft is cantilever force in traditional compressor operational process, when compressor is when heavy duty operating condition is run, due to cantilever It is too long, it be easy to cause shaft main shaft that large curved deformation occurs, causes shaft and the abrasion of cylinder block bearing portions, cause compressor The problem of failure.

Utility model content

The main purpose of the utility model is to provide a kind of compressor and with its refrigerating plant, to solve existing skill Compressor displacement problem easy to wear in art.

To achieve the goals above, one aspect according to the present utility model provides a kind of compressor, comprising: cylinder Seat, cylinder block have axis hole, and cylinder block has the connecting side for installing the working side of piston and for connecting with stator；First Bearing, first bearing are connected with working side and are coaxially disposed with axis hole；Second bearing, second bearing are connected with working side, The internal diameter of second bearing is greater than the outer diameter of first bearing, so that shape between the inner peripheral surface of second bearing and the outer peripheral surface of first bearing At installation space.

Further, compressor further include: 3rd bearing, 3rd bearing are set in installation space.

Further, 3rd bearing is plane bearing.

Further, the wall thickness of first bearing is L1, wherein L1 >=2mm and/or the wall thickness of second bearing are L2, In, L2 >=3mm.

Further, the internal diameter of first bearing isWherein,And/or the internal diameter of second bearing ForWherein,

Further, first bearing is H along the height of the axis direction of axis hole, wherein 2.5mm≤H≤8mm and/or the The inner peripheral surface of two bearings to first bearing outer peripheral surface distance be L3, wherein 10mm≤L3≤25mm.

Further, second bearing is greater than first bearing along the axis direction of axis hole along the height of the axis direction of axis hole Highly.

Further, compressor further includes shaft, and shaft includes: long axis, and long axis is arranged in axis hole by first bearing； One end of balance weight, long axis is connected with balance weight, and balance weight is located in second bearing；Short axle, short axle are connected with balance weight, The axial offset of the axis of short axle and long axis it is arranged, short axle with connecting rod for being connected.

Further, the contour line of the cross section of the radial direction of balance weight is circle.

Further, it is offered on balance weight and offers counterbore on the through-hole and/or balance weight of hollow out.

Further, offer the through-hole of hollow out on balance weight, through-hole be it is multiple, multiple through-holes are located at the two of short axle Side.

Further, the cross section of through-hole is crescent.

Further, the minimum thickness between the hole wall of through-hole and balance weight outer rim is L4, wherein 1.5mm≤L4≤ 5mm。

Another aspect according to the present utility model, provides a kind of refrigerating plant, including compressor, and compressor is above-mentioned Compressor.

Using the technical solution of the utility model, by be arranged on cylinder block first bearing and second bearing to shaft into Row support and limit, can be effectively prevented shaft and bend in the course of rotation, then reduce shaft and cylinder block Between abrasion, effectively improve the reliability and compression performance of compressor.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the schematic cross-sectional view of the first embodiment of compressor according to the present utility model；

Fig. 2 shows the structural schematic diagrams of the second embodiment of compressor according to the present utility model；

Fig. 3 shows the schematic cross-sectional view of the embodiment of cylinder block according to the present utility model；

Fig. 4 shows the structural schematic diagram of the first embodiment of shaft according to the present utility model；

Fig. 5 shows the structural schematic diagram of the second embodiment of shaft according to the present utility model.

Wherein, the above drawings include the following reference numerals:

10, cylinder block；11, axis hole；

20, first bearing；

30, second bearing；

40,3rd bearing；

50, shaft；51, long axis；52, balance weight；521, through-hole；53, short axle；

60, connecting rod；

70, piston；

80, piston pin；81, piston chamber.

Specific embodiment

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce The other step or units of product or equipment inherently.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them It states.

In conjunction with shown in Fig. 1 to Fig. 5, embodiment according to the present utility model provides a kind of compressor.

Specifically, as depicted in figs. 1 and 2, compressor includes cylinder block 10, first bearing 20 and second bearing 30.Cylinder Seat 10 has axis hole 11, and cylinder block 10 has the connecting side for installing the working side 12 of piston 70 and for connecting with stator 13.First bearing 20 is connected with working side 12 and is coaxially disposed with axis hole 11.Second bearing 30 is connected with working side 12, the The internal diameter of two bearings 30 is greater than the outer diameter of first bearing 20, so that the outer peripheral surface of the inner peripheral surface of second bearing 30 and first bearing 20 Between form installation space.

In the present embodiment, shaft is supported and is limited by the way that first bearing and second bearing are arranged on cylinder block Position, can be effectively prevented shaft and bend in the course of rotation, then reduce the abrasion between shaft and cylinder block, Effectively improve the reliability and compression performance of compressor.

Wherein, compressor further includes 3rd bearing 40.3rd bearing 40 is set in installation space.Setting can mention in this way Stability and reliability when high shaft rotates.3rd bearing 40 can be plane bearing, and plane bearing is located at the installation of annular In control.

Further, the wall thickness of first bearing 20 is L1, wherein L1 >=2mm, the wall thickness of second bearing 30 are L2, wherein L2≥3mm.Setting can be improved the rigidity of first bearing 20 and second bearing 30 in this way, and effectively improve the cylinder block can By property.

The internal diameter of first bearing 20 isWherein,The internal diameter of second bearing 30 isIts In,Setting can be improved the stability cooperated between cylinder block and shaft in this way.

As shown in figure 3, first bearing 20 is H along the height of the axis direction of axis hole 11, wherein 2.5mm≤H≤8mm, the The inner peripheral surface of two bearings 30 to first bearing 20 outer peripheral surface distance be L3, wherein 10mm≤L3≤25mm.Wherein, second Bearing 30 is greater than first bearing 20 along the height of the axis direction of axis hole 11 along the height of the axis direction of axis hole 11.

As shown in Figure 4 and Figure 5, compressor further includes shaft 50.Shaft 50 includes long axis 51, balance weight 52 and short axle 53. Long axis 51 is arranged in axis hole 11 by first bearing 20.One end of long axis 51 is connected with balance weight 52, and balance weight 52 is located at In second bearing 30.Short axle 53 is connected with balance weight 52, and the axis of short axle 53 is arranged with the axial offset of long axis 51, short axle 53 with connecting rod 60 for being connected.Specifically, one end of connecting rod 60 is set in short axle 53, and the other end is living by piston pin more than 80 Plug 70 is connected, and piston 70 is set in the piston chamber 81 of the working side of cylinder block.Setting can effectively improve the pressure in this way The reliability and stability of contracting machine.

Preferably, the contour line of the cross section of the radial direction of balance weight 52 is circle.Circle of position shape is arranged in balance weight 52 Structure can be improved balanced action of the balance weight in shaft rotation process, so that shaft is more steady during rotation.

In order to reduce the weight of balance weight, the through-hole 521 of hollow out can be offered on balance weight 52, or in balance weight Counterbore is offered on 52.

As shown in figure 4, offering the through-hole 521 of hollow out on balance weight 52, through-hole 521 is multiple, multiple difference of through-holes 521 Positioned at the two sides of short axle 53.Setting can further improve the stability of shaft in this way.Wherein, the cross section of through-hole 521 is Crescent.Minimum thickness between 52 outer rim of hole wall and balance weight of through-hole 521 is L4, wherein 1.5mm≤L4≤5mm.

Compressor in above-described embodiment can be also used for technical field of refrigeration equipment, i.e., according to the present utility model another Aspect provides a kind of refrigerating plant.The device includes compressor, and compressor is the compressor in above-described embodiment.

Specifically, in this embodiment, shaft balance weight in addition to rise counterweight effect other than, also with the second bearing phase on cylinder block Interaction increases loading ability of bearing area.Since shaft is supported using duplex bearing, solve in light-duty commercial kitchen area due to load Bearing capacity caused by increasing is inadequate, and then the problem of the bearing wear of initiation.

Using the compressor of the structure, it is capable of increasing bearing support area, improves the bearing capacity of bearing, has widened pressure The application field of contracting machine.Shaft is supported using duplex bearing, improves the reliability of compressor.Since bearing support area increases, Capsizing lever is shorter, and corresponding shaft can be done short, therefore compressor volume can be done smaller, significantly reduce compression The cost of machine.

Cylinder block is equipped with first bearing and second bearing, has round balance weight in shaft, there is hollow out in balance weight short axle side Slot.Balance weight also cooperates with the second bearing on cylinder block, plays other than playing balance rotating inertia force and reciprocal inertia force Supporting role.

First bearing and long axis cooperate, and the balance weight of second bearing and shaft cooperates.Pass through plane bearing below balance weight Cooperate with cylinder block bearing hole end surface.The structure is that shaft balance weight is in addition to playing balance rotating with the difference of prior art maximum It outside the effect of inertia force and reciprocal inertia force, is also played a supporting role by cylinder block bearing, improves the carrying energy of compressor Power.Balance weight, since second bearing shortens apart from connecting rod and shaft short axle mating part, topples while playing the role of bearing Torque accordingly becomes smaller.First bearing minimum wall thickness (MINI W.) is 2mm, and second bearing minimum wall thickness (MINI W.) is 3mm.Therefore, corresponding bearing effect Power is opposite to be reduced, and is reduced bearing capacity, is conducive to do compressor machine volume small.

Cylinder block bearing hole is divided into first axle bearing bore and second bearing hole two parts, and two bearings hole is coaxial, and main bearing hole exists Under, internal diameterExtremelySecond bearing hole is in upper, internal diameterExtremelyFirst axle bearing bore upper end Outer circle has the annular installation space that a height is H, width is L3, is used for mounting plane bearing assembly.General height H value 2.5mm to 8mm, width L3 value 10mm to 25mm.

Shaft mainly includes long axis, balance weight and short axle three parts.Balance weight is circle, close to shaft stub portion There is symmetrical through-hole above balance weight, the shape of through-hole is crescent.It is of course also possible to be blind hole structure, blind hole structure It also is crescent.Wherein, hollow-out part and the most thin part of balance weight outer circle are in 1.5mm to 5mm, to guarantee outside balance weight The rigidity of balance weight part, reduces its deformation when round machining accuracy and shaft stress.Effectively improve the reliable of compressor Property.

Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment Other embodiments are closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (14)

1. a kind of compressor characterized by comprising

Cylinder block (10), the cylinder block (10) have axis hole (11), and the cylinder block (10) has the work for installing piston Make side (12) and the connecting side (13) for connecting with stator；

First bearing (20), the first bearing (20) be connected with the working side (12) and with the axis hole (11) is coaxial sets It sets；

Second bearing (30), the second bearing (30) are connected with the working side (12), the second bearing (30) it is interior Diameter is greater than the outer diameter of the first bearing (20), so that the inner peripheral surface of the second bearing (30) and the first bearing (20) Installation space is formed between outer peripheral surface.

2. compressor according to claim 1, which is characterized in that the compressor further include:

3rd bearing (40), the 3rd bearing (40) are set in the installation space.

3. compressor according to claim 2, which is characterized in that the 3rd bearing (40) is plane bearing.

4. compressor according to claim 1, which is characterized in that

The wall thickness of the first bearing (20) is L1, wherein L1 >=2mm, and/or

The wall thickness of the second bearing (30) is L2, wherein L2 >=3mm.

5. compressor according to claim 1, which is characterized in that

The internal diameter of the first bearing (20) isWherein,And/or

The internal diameter of the second bearing (30) isWherein,

6. compressor according to claim 1, which is characterized in that

The height of axis direction of the first bearing (20) along the axis hole (11) is H, wherein 2.5mm≤H≤8mm, and/ Or

The distance of outer peripheral surface of the inner peripheral surface of the second bearing (30) to the first bearing (20) is L3, wherein 10mm≤ L3≤25mm。

7. compressor according to claim 1, which is characterized in that axis of the second bearing (30) along the axis hole (11) The height in line direction is greater than the first bearing (20) along the height of the axis direction of the axis hole (11).

8. compressor according to claim 1, which is characterized in that the compressor further includes shaft (50), the shaft (50) include:

Long axis (51), the long axis (51) are arranged in the axis hole (11) by the first bearing (20)；

One end of balance weight (52), the long axis (51) is connected with the balance weight (52), and the balance weight (52) is located at institute It states in second bearing (30)；

Short axle (53), the short axle (53) are connected with the balance weight (52), the axis and the long axis of the short axle (53) (51) axial offset it is arranged, the short axle (53) with connecting rod for being connected.

9. compressor according to claim 8, which is characterized in that the cross section of the radial direction of the balance weight (52) Contour line is circle.

10. compressor according to claim 9, which is characterized in that

The through-hole (521) of hollow out is offered on the balance weight (52), and/or

Counterbore is offered on the balance weight (52).

11. compressor according to claim 10, which is characterized in that offer the through-hole of hollow out on the balance weight (52) (521), the through-hole (521) is multiple, and multiple through-holes (521) are located at the two sides of the short axle (53).

12. compressor according to claim 11, which is characterized in that the cross section of the through-hole (521) is crescent.

13. compressor according to claim 11, which is characterized in that the hole wall and the balance weight of the through-hole (521) (52) minimum thickness between outer rim is L4, wherein 1.5mm≤L4≤5mm.

14. a kind of refrigerating plant, including compressor, which is characterized in that the compressor is any one of claims 1 to 13 institute The compressor stated.