CN208474121U - Air cylinder structure, pump assembly and turn cylinder compressor - Google Patents

Abstract

The utility model provides a kind of air cylinder structure, pump body structure and turns cylinder compressor.Air cylinder structure includes cylinder body, offers piston hole with penetrating through on the side wall of cylinder body, is provided with oil guide groove on the outer peripheral surface of cylinder body.In the outer peripheral surface of cylinder body, oil guide groove is set, it can guarantee that the outer peripheral surface of cylinder forms lubricating oil film between the inner peripheral surface of cylinder jacket, efficiently reduce the abrasion generated between cylinder and cylinder jacket, the service life for improving the pump body structure of the cylinder with the structure, improves the reliability of the pump body structure.

Description

Air cylinder structure, pump assembly and turn cylinder compressor

Technical field

The utility model relates to compressor apparatus technical field, in particular to a kind of air cylinder structure, pump body structure and Turn cylinder compressor.

Background technique

In the prior art, cylinder side surface and cylinder jacket, the both ends of the surface of cylinder and upper and lower limit plate (upper and lower flange) are big Contact area.Wherein, contact surface is two cambered surfaces or plane, and such structure is unfavorable for forming the oil film of continuous-stable, Yi Jie The inordinate wear of contact portion position, this is verified during the experiment, be easy to cause the mechanical friction of compressor to be lost, increases leakage Amount reduces the problems such as refrigerating capacity of compressor.

Utility model content

The main purpose of the utility model is to provide a kind of air cylinder structure, pump body structure and turn cylinder compressor, to solve Compressor displacement problem easy to wear in the prior art.

To achieve the goals above, one aspect according to the present utility model provides a kind of air cylinder structure, comprising: gas Cylinder ontology offers piston hole with penetrating through on the side wall of cylinder body, is provided with oil guide groove on the outer peripheral surface of cylinder body.

Further, the cylindrical structure of cylinder body, oil guide groove is from the first end of cylinder body towards cylinder body Second end gradually extends spirally setting.

Further, the hand of spiral of oil guide groove is opposite with the direction of rotation for the shaft being arranged in cylinder body.

Further, oil guide groove is multiple, and multiple oil guide grooves are respectively arranged at the two sides of the axis of piston hole.

Further, oil trap is provided at least one section of cylinder body, the geometric center lines of oil trap are in arc Shape, the rotation side of the outside extending direction of the radial direction along cylinder body of oil trap and the shaft being arranged in cylinder body To opposite.

Further, oil trap includes the first oil trap and the second oil trap, and the first oil trap is opened in cylinder body On the end face of first end, the second oil trap is opened on the end face of the second end of cylinder body.

Further, the first oil trap is multiple, and multiple first oil traps are more along the arranged circumferentially spaced of cylinder body The cross section of a first oil trap gradually increases outward along cylinder body radial direction.

Further, the oil inlet of the first oil trap is located on the outer peripheral surface of cylinder body.

Further, the second oil trap is multiple, and multiple second oil traps are more along the arranged circumferentially spaced of cylinder body The cross section of a second oil trap is gradually reduced outward along cylinder body radial direction.

Further, the inner wall side of the close cylinder body of the second end of cylinder body offers annular deep gouge, and second One end of the inner wall of the close cylinder body of oil trap is connected with annular deep gouge.

Another aspect according to the present utility model, provides a kind of pump assembly, including air cylinder structure, and air cylinder structure is upper The air cylinder structure stated.

Further, pump assembly includes: limit plate, and limit plate is used to abut against at least one end of cylinder body, limit Oil supply tank is offered on the surface towards cylinder body side of position plate, the extending direction of oil supply tank and is arranged in cylinder body Shaft direction of rotation it is identical.

Further, the geometric center lines of the inner circle of limit plate and the radial direction along cylinder body of oil supply tank intersect at The tangent line of point P, the point P in the geometric center lines of oil supply tank and the inner circle of limit plate have angle γ, wherein 0≤γ≤90 °, And/or projection line of the outer circle of cylinder body on limit plate and oil supply tank intersect at point P1, the end of at least one end of oil supply tank Portion is located at the outside of the outer circle of cylinder body, the geometric center lines and cylinder body of the radial direction along cylinder body of oil supply tank Outer circle and cross the tangent line of point P1 with angle γ 1, wherein 1≤90 ° of 0≤γ.

Another aspect according to the present utility model provides one kind and turns cylinder compressor, including pump assembly, and pump assembly is Above-mentioned pump assembly.

Using the technical solution of the utility model, oil guide groove is set in the outer peripheral surface of cylinder body, can guarantee cylinder Outer peripheral surface forms lubricating oil film between the inner peripheral surface of cylinder jacket, efficiently reduces and generates between cylinder and cylinder jacket Abrasion, improves the service life of the pump body structure of the cylinder with the structure, improves the reliability of the pump body structure.

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 configuration schematic diagram of the embodiment of pump body structure according to the present utility model；

Fig. 2 shows the schematic cross-sectional views of the embodiment of pump body structure according to the present utility model；

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

Fig. 4 shows the structural schematic diagram of the second embodiment of air cylinder structure according to the present utility model；

Fig. 5 shows the structural schematic diagram of the embodiment of the first end of air cylinder structure according to the present utility model；

Fig. 6 shows the enlarged structure schematic diagram in Fig. 5 at A；

Fig. 7 shows the structural schematic diagram of the 3rd embodiment of air cylinder structure according to the present utility model；

Fig. 8 shows the structural schematic diagram of the embodiment of the second end of air cylinder structure according to the present utility model；

Fig. 9 shows the enlarged structure schematic diagram in Fig. 8 at B；

Figure 10 shows the structural schematic diagram of the fourth embodiment of air cylinder structure according to the present utility model；

Figure 11 shows the enlarged structure schematic diagram in Figure 10 at C；

Figure 12 shows the structural schematic diagram of the first embodiment of limit plate according to the present utility model；

Figure 13 shows the structural schematic diagram of the second embodiment of limit plate according to the present utility model；

Figure 14 shows the structural schematic diagram of the embodiment of limit plate according to the present utility model and air cylinder structure assembly；

Figure 15 shows the enlarged structure schematic diagram in Figure 14 at D.

Wherein, the above drawings include the following reference numerals:

10, cylinder body；11, piston hole；

20, oil guide groove；

30, oil trap；31, the first oil trap；32, the second oil trap；

40, annular deep gouge；

50, limit plate；51, oil supply tank；

71, lower flange；72, piston；73, cylinder jacket；74, upper flange；75, shaft.

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 Figure 15, embodiment according to the present utility model provides a kind of air cylinder structure.

Specifically, as shown in Figure 1 to Figure 3, which includes cylinder body 10.It is penetrated through on the side wall of cylinder body 10 Ground offers piston hole 11, and oil guide groove 20 is provided on the outer peripheral surface of cylinder body 10.

In the present embodiment, oil guide groove is set in the outer peripheral surface of cylinder body, can guarantee the outer peripheral surface of cylinder with gas Lubricating oil film is formed between the inner peripheral surface of cylinder sleeve, the abrasion generated between cylinder and cylinder jacket is efficiently reduced, improves The service life of the pump body structure of cylinder with the structure improves the reliability of the pump body structure.

Wherein, cylinder body 10 is cylindrical-shaped structure, and oil guide groove 20 is from the first end of cylinder body 10 towards cylinder body 10 second end gradually extends spirally setting.Setting can effectively improve the Oil Guide efficiency of oil guide groove 20 in this way.It is preferred that Ground, the hand of spiral of oil guide groove 20 are opposite with the direction of rotation for the shaft being arranged in cylinder body 10.

In order to further improve the Oil Guide efficiency of oil guide groove 20, set multiple for oil guide groove 20, multiple oil guide grooves 20 It is respectively arranged at the two sides of the axis of piston hole 11.As shown in figure 4, being respectively provided with one in the two sides of the axis of piston hole 11 Oil guide groove 20.It is of course also possible to which an at least oil guide groove 20 is respectively set in the two sides of the axis of piston hole 11.

As shown in figure 3, being set at least one section of cylinder body 10 to further decrease the abrasion of air cylinder structure It is equipped with oil trap 30, the geometric center lines of oil trap 30 are arc, and the radial direction along cylinder body 10 of oil trap 30 is outside Extending direction it is opposite with the direction of rotation for the shaft being arranged in cylinder body 10.

As shown in Figure 5 and Figure 8, oil trap 30 includes the first oil trap 31 and the second oil trap 32, and the first oil trap 31 is opened On the end face of the first end of cylinder body 10, on the end face for the second end that the second oil trap 32 is opened in cylinder body 10. Wherein, the arrow in figure is the direction of rotation of shaft.Setting can effectively reduce both ends and the limit plate of air cylinder structure in this way Between abrasion, further increase the reliability of air cylinder structure.

As shown in figure 5, the first oil trap 31 be it is multiple, multiple first oil traps 31 along cylinder body 10 circumferentially-spacedly Setting, the cross section of multiple first oil traps 31 gradually increases outward along 10 radial direction of cylinder body.Preferably, the first oil-collecting The oil inlet of slot 31 is located on the outer peripheral surface of cylinder body 10.As shown in fig. 6, f1 is the rear wall of the first oil trap 31, f2 the The antetheca of one oil trap 31, f3 are the import of the first oil trap 31.

As shown in figure 8, the second oil trap 32 be it is multiple, multiple second oil traps 32 along cylinder body 10 circumferentially-spacedly Setting, the cross section of multiple second oil traps 32 is gradually reduced outward along 10 radial direction of cylinder body.Such as Fig. 9 to Figure 11 institute Show, the inner wall side of the close cylinder body 10 of the second end of cylinder body 10 offers annular deep gouge 40, the second oil trap 32 One end of inner wall of close cylinder body 10 be connected with annular deep gouge 40.

Air cylinder structure in above-described embodiment can be also used for pump assembly equipment technical field, i.e., according to the utility model Another aspect, provide a kind of pump assembly, including air cylinder structure, air cylinder structure is the air cylinder structure in above-described embodiment. Wherein, pump assembly includes limit plate 50.Limit plate 50 is used to abut against at least one end of cylinder body 10 to cylinder knot Structure is limited, and oil supply tank 51, the extension of oil supply tank 51 are offered on the surface towards 10 side of cylinder body of limit plate 50 Direction is identical as the direction of rotation for the shaft being arranged in cylinder body 10.Setting can further improve air cylinder structure in this way With the lubricant effect between limit plate 50, it is preferable that the lower limiting board of 50 pump assembly of limit plate, certainly, the limit plate The upper limit that can be pump assembly is plate.Setting can further reduce the abrasion of air cylinder structure in this way.

As shown in Figure 12 and Figure 13, the inner circle of limit plate 50 and the radial direction along cylinder body 10 of oil supply tank 51 is several What center line intersects at point P, and the tangent line of the point P in the geometric center lines of oil supply tank 51 and the inner circle of limit plate 50 has angle γ, wherein 0≤γ≤90 °.As shown in FIG. 14 and 15, projection line and fuel feeding of the outer circle of cylinder body 10 on limit plate 50 Slot 51 intersects at point P1, and the end of at least one end of oil supply tank 51 is located at the outside of the outer circle of cylinder body 10, oil supply tank 51 Along the radial direction of cylinder body 10 geometric center lines and 10 outer circle of cylinder body and cross the tangent line of point P1 with angle γ 1, wherein 1≤90 ° of 0≤γ.Setting can further reduce the abrasion of air cylinder structure in this way.

Pump assembly in above-described embodiment can be also used for compressor apparatus technical field, i.e., according to the present utility model On the other hand, it provides one kind and turns cylinder compressor, including pump assembly, pump assembly is the pump assembly in above-described embodiment.

Specifically, using the technical solution of the present embodiment, air cylinder structure in the prior art can be efficiently solved The inner circle of outer circle and cylinder jacket cannot form the problem that continuous oil film causes coolant leakage amount big, also solve cylinder and cylinder jacket Continuous oil film cannot be formed cause to lubricate between inordinate wear and cylinder end face and limit plate insufficient causes friction power loss to increase And the problem of inordinate wear.In this application, spiral oil guide slot is opened up in cylinder side surface, guarantees that cylinder and cylinder inner room are formed and connects Continuous oil film, reduces coolant leakage amount, avoids inordinate wear.

The first end and second end of cylinder opens up oil trap, advantageously ensure that two end faces of cylinder respectively with upper and lower limit Sufficient lubrication between the plate of position, reduces friction power loss, reduces face leakage.Pump assembly main component is as shown in Figure 1, the pump assembly Include shaft 75, piston 72, cylinder jacket 73, cylinder body 10, limit plate 50, upper flange 74, lower flange 71.Pump assembly also wraps It includes fixing screws, valve block, provide in valve block baffle figure, pump housing installation diagram is as shown in Figure 2.

The side of air cylinder structure is arranged symmetrically the spiral oil guide slot 20 through cylinder axial direction, and spiral oil guide slot 20 and the pump housing revolve Turn contrary, the tangent line and shaft axis angle theta range of spiral oil guide slot 20 are 0-45 °, preferably angle theta=30 °.Cylinder knot The upper surface (second end) of structure opens up annular deep gouge 40 in short axle root, is directed toward uniformly distributed multiple second collection of outer circle along annular deep gouge 40 Oil groove, the rotation direction and the pump housing of the second oil trap are oppositely oriented, and on annular deep gouge 40, import to outlet is the face of cross section for import Product is gradually reduced, and the second oil trap arranges that quantity is 8-15, preferably 12.Air cylinder structure lower end surface (first end) refers to along outer circle Multiple first oil traps are evenly distributed with to axle center, the first oil trap is helical structure, and rotation direction and pump housing direction of rotation are on the contrary, import exists In outer circle, import extremely outlet is that cross-sectional area is gradually reduced structure, and the first oil trap arranges that quantity is a for 8-15, preferably 12 It is a.The depth of second oil trap is 0.02mm-0.1mm, preferably 0.04mm-0.05mm.

The surface of contact side of the lower limiting board with air cylinder structure opens up an oil supply tank 51, and oil supply tank 51 is directed toward to be revolved with the pump housing It is identical to turn direction, in inner circle, the inner circle tangent line angle γ range of 51 axis of oil supply tank and lower limiting board is 51 import of oil supply tank 0-90 °, preferably 30 ° -60 °, 51 length of oil supply tank are advisable with rigid stretches out cylinder structure outer circle, as shown in figure 15.

Air cylinder structure lower end surface oil trap working principle: the refrigeration oil between the lower short axle and lower limiting board of air cylinder structure exists Centrifugal force effect is lower to enter lower limiting board end face oil supply tank 51, and lower limiting board fuel feeding is passed through in the first oil trap import of cylinder lower end surface When slot 51, since the first oil trap import is big, import to outlet is gradually reduced, and import is high-pressure side, under dynamic pressure effect Oil is full of the first oil trap.When the first oil trap turns over oil supply tank 51, the rear wall of oil supply tank 51 is under scraping effect by first Oil distribution in oil trap is in limit plate surface.The first oil trap of lower end surface be distribution equalizing structure, and previous first oil trap into Bicker degree is identical as the exit angle of latter first oil trap, therefore, can form continuous oil supply, lower end surface profit in limit plate surface Sliding situation is improved, and lower end surface friction power loss accordingly reduces.Simultaneously in the first oil trap workspace since lubrication circumstances obtain Improve, lower end surface leakage path is greatly decreased under the action of oil, and lower end surface, which leaks, to be improved.

Cylinder upper surface oil trap working principle: short axle root annular deep gouge and upper limit plate surround an oil storage on cylinder Slot, since oil trap import is big, import to outlet is gradually reduced, and import is high-pressure side, and oil is full of the under dynamic pressure effect Two oil traps, when cylinder rotation, the second oil trap rear wall is limiting the oil distribution in the second oil trap under scraping effect Plate surface.The second oil trap of upper surface is distribution equalizing structure, and previous second oil trap entrance angle goes out with latter second oil trap Bicker degree is identical, therefore, can form continuous oil supply in limit plate surface, upper surface lubrication circumstances are improved, upper surface friction Power consumption accordingly reduces.Simultaneously in oil trap workspace since lubrication circumstances are improved, effect of the upper surface leakage path in oil Under be greatly decreased, upper surface, which leaks, to be improved.

Cylinder side surface oil trap working principle: 1, cylinder side surface spiral oil guide slot rotation direction and rotational axis direction are on the contrary, work as spiral shell When revolving the import of oil guide groove lower end by limit plate oil groove, oil rises along spiral oil guide slot under the action of the centrifugal force.2, when spiral is led When oil groove and cylinder liner internal wall face contact, oil can be accumulated in oil guide groove.The above two o'clock causes cylinder circumferential seal ability to improve, Circumferential leakage is improved.Spiral oil guide slot rear is under scraping effect simultaneously, by oil distribution in cylinder liner surface, cylinder and cylinder Set surface lubrication situation is improved, and circumferential friction power loss accordingly reduces.

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 air cylinder structure characterized by comprising

Cylinder body (10) offers piston hole (11), the cylinder body with penetrating through on the side wall of the cylinder body (10) (10) oil guide groove (20) are provided on outer peripheral surface.

2. air cylinder structure according to claim 1, which is characterized in that the cylindrical structure of the cylinder body (10), institute Stating second end of the oil guide groove (20) from the first end of the cylinder body (10) towards the cylinder body (10), gradually spiral is prolonged Stretch setting.

3. air cylinder structure according to claim 2, which is characterized in that the hand of spiral of the oil guide groove (20) be arranged in The direction of rotation of shaft in the cylinder body (10) is opposite.

4. air cylinder structure according to claim 1, which is characterized in that the oil guide groove (20) be it is multiple, it is multiple described to lead Oil groove (20) is respectively arranged at the two sides of the axis of the piston hole (11).

5. air cylinder structure according to claim 1, which is characterized in that at least one section of the cylinder body (10) Be provided with oil trap (30), the geometric center lines of the oil trap (30) are arc-shaped, the oil trap (30) along cylinder body (10) the outside extending direction of radial direction is opposite with the direction of rotation of shaft being arranged in the cylinder body (10).

6. air cylinder structure according to claim 5, which is characterized in that the oil trap (30) includes the first oil trap (31) On the end face for the first end for being opened in the cylinder body (10) with the second oil trap (32), first oil trap (31), institute On the end face for stating the second end that the second oil trap (32) is opened in the cylinder body (10).

7. air cylinder structure according to claim 6, which is characterized in that first oil trap (31) is multiple, Duo Gesuo The first oil trap (31) is stated along the arranged circumferentially spaced of the cylinder body (10), the cross of multiple first oil traps (31) Section gradually increases outward along the cylinder body (10) radial direction.

8. air cylinder structure according to claim 6 or 7, which is characterized in that the oil inlet position of first oil trap (31) In on the outer peripheral surface of the cylinder body (10).

9. air cylinder structure according to claim 6, which is characterized in that second oil trap (32) is multiple, Duo Gesuo The second oil trap (32) is stated along the arranged circumferentially spaced of the cylinder body (10), the cross of multiple second oil traps (32) Section is gradually reduced outward along the cylinder body (10) radial direction.

10. air cylinder structure according to claim 6 or 9, which is characterized in that the second end of the cylinder body (10) is leaned on The inner wall side of the nearly cylinder body (10) offers annular deep gouge (40), the close gas of second oil trap (32) One end of the inner wall of cylinder ontology (10) is connected with the annular deep gouge (40).

11. a kind of pump assembly, including air cylinder structure, which is characterized in that the air cylinder structure is any in claims 1 to 10 Air cylinder structure described in.

12. pump assembly according to claim 11, which is characterized in that the pump assembly includes:

Limit plate (50), the limit plate (50) are used to abut against at least one end of the cylinder body (10), the limit It is offered oil supply tank (51) on the surface towards the cylinder body (10) side of plate (50), the extension of the oil supply tank (51) Direction is identical as the direction of rotation of shaft being arranged in the cylinder body (10).

13. pump assembly according to claim 12, which is characterized in that

The geometry of the radial direction along the cylinder body (10) of the inner circle and oil supply tank (51) of the limit plate (50) Center line intersects at point P, the tangent line of the point P in the geometric center lines of the oil supply tank (51) and the inner circle of the limit plate (50) With angle γ, wherein 0≤γ≤90 °, and/or

Projection line of the outer circle of the cylinder body (10) on the limit plate (50) and the oil supply tank (51) intersect at a little P1, the end of at least one end of the oil supply tank (51) are located at the outside of the outer circle of the cylinder body (10), the oil supply tank (51) geometric center lines of the radial direction along the cylinder body (10) and the cylinder body (10) outer circle and cross point The tangent line of P1 has angle γ 1, wherein 1≤90 ° of 0≤γ.

14. one kind turns cylinder compressor, including pump assembly, which is characterized in that the pump assembly is in claim 11 to 13 Described in any item pump assemblies.