CN218493823U - Compressor - Google Patents

Abstract

The utility model provides a compressor. The compressor includes: a housing; the pump body assembly is arranged in the shell and comprises a cylinder assembly, a piston and a crankshaft; the oil suction pipe is arranged in the short shaft of the crankshaft in a penetrating mode and used for sucking oil in the shell into the pump body assembly; the lower flange is arranged below the air cylinder assembly and is provided with a first through hole; the oil stabilizing structure is arranged on the surface of the lower flange, which is far away from the cylinder assembly, the oil stabilizing structure is provided with a second through hole communicated with the first through hole, and the oil suction pipe is arranged in the first through hole and the second through hole in a penetrating way; wherein, satisfy between the external diameter D1 of oil suction pipe, the external diameter D2 of minor axis and the internal diameter D3 of second through-hole: d1+ a is not less than D3 and not more than D2, and a is not less than 0.1mm and not more than 0.3mm. The utility model discloses the relatively poor problem of oil absorption reliability of compressor oil absorption pipe in the prior art has been solved effectively.

Description

Compressor

Technical Field

The utility model relates to a compressor technical field particularly, relates to a compressor.

Background

At present, a large amount of liquid refrigerants can be dissolved in a compressor oil sump which is kept stand under the low-temperature condition, the liquid refrigerants can be evaporated and take away a large amount of lubricating oil when the compressor is started, the oil level in the oil sump is reduced rapidly, the compressor has an oil-empty phenomenon, and then the compressor cannot pump enough lubricating liquid to meet the lubricating and sealing requirements of a pump body assembly, so that the working performance and the operation reliability of the compressor are seriously influenced.

In the prior art, in order to reduce the influence of the oil-empty phenomenon of the compressor on the operation of the compressor, the depth of an oil pool is generally increased, and an oil suction pipe is additionally arranged at the short shaft end of a crankshaft, so that the compressor can pump enough lubricating oil to lubricate a pump body assembly when the lubricating oil level is lower than the short shaft end face of the crankshaft.

However, in the actual operation process of the compressor, the crankshaft of the compressor is deformed under the combined action of the inertia force, the gas force and the electromagnetic force, and the oil suction pipe is also deformed, so that the oil suction pipe generates a stirring action on the lubricating oil in the oil pool, and further bubbles are generated in the lubricating oil, especially when the compressor is in low-temperature standing start or defrosting start, because the density of the liquid refrigerant is greater than that of the lubricating oil and is deposited under the lubricating oil, the lubricating oil is more likely to generate bubbles under the stirring action of the oil suction pipe, and the bubbles enter the oil path and are subjected to cavitation erosion, so that the motion reliability of a friction pair of a pump body assembly is affected, and further the performance and the operation reliability of the compressor are affected.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a compressor to solve the problem of the prior art that the oil suction pipe of the compressor is relatively poor in oil suction reliability.

In order to achieve the above object, the present invention provides a compressor, including: a housing; the pump body assembly is arranged in the shell and comprises a cylinder assembly, a piston and a crankshaft; the oil suction pipe penetrates through the short shaft of the crankshaft and is used for sucking oil in the shell into the pump body assembly; the lower flange is arranged below the air cylinder assembly and is provided with a first through hole; the oil stabilizing structure is arranged on the surface of the lower flange, which is far away from the cylinder assembly, the oil stabilizing structure is provided with a second through hole communicated with the first through hole, and the oil suction pipe is arranged in the first through hole and the second through hole in a penetrating manner; wherein, satisfy between the external diameter D1 of oil suction pipe, the external diameter D2 of minor axis and the internal diameter D3 of second through-hole: d1+ a is not less than D3 and not more than D2, and a is not less than 0.1mm and not more than 0.3mm.

Further, a preset distance h is arranged between the end face of the oil stabilizing structure far away from the lower flange and the oil inlet end of the oil suction pipe, and the preset distance h and the outer diameter D2 of the short shaft meet the following requirements: h/D2 is less than or equal to b, and b is less than or equal to 0.05mm and less than or equal to 0.15mm.

Further, the first through hole and the second through hole are coaxially arranged.

Further, lower flange and steady oily structure are integrated into one piece structure.

Further, the compressor further includes: the matching assembly comprises a first matching part and a second matching part, the first matching part is arranged on the lower flange, the second matching part is arranged on the oil stabilizing structure, one of the first matching part and the second matching part is a protrusion, the other of the first matching part and the second matching part is a concave part, and the protrusion extends into the concave part and is in limit matching with the concave part so as to connect the lower flange and the oil stabilizing structure; wherein, the number of the matching components is one; or the matching assemblies are multiple and are arranged at intervals around the circumference of the oil suction pipe.

Further, the protrusion is in interference fit with the recess; alternatively, the outer peripheral surface of the protrusion has an external thread, and the inner peripheral surface of the recess has an internal thread, which is screwed with the external thread.

Further, the oil stabilizing structure is one; or the oil stabilizing structures are multiple and are sequentially connected along the extending direction of the oil suction pipe.

Further, the oil stabilizing structure comprises: the inner cavity of the cylinder body forms a second through hole; the connecting lug is arranged on the outer peripheral surface of the cylinder body and is provided with a third through hole; the fastener penetrates through the third through hole and the lower flange to connect the lower flange and the oil stabilizing structure; wherein, the connecting lug is one; or the connecting lugs are arranged at intervals along the circumferential direction of the cylinder.

Further, the connecting lug is plate-shaped, and the thickness of the connecting lug is smaller than or equal to the length of the cylinder.

Further, the oil stabilizing structure is made of PBT plastic, or stainless steel, or aluminum alloy.

By applying the technical scheme of the utility model, the pump body component of the compressor is arranged in the casing and comprises a cylinder component, a piston and a crankshaft; the lower flange is arranged below the cylinder component and is provided with a first through hole, and the oil stabilizing structure is arranged on the surface of the lower flange, which is far away from the cylinder component, and is provided with a second through hole; one end of the oil suction pipe is arranged in the short shaft of the crankshaft in a penetrating mode so as to suck oil in the shell to the pump body assembly, and the other end of the oil suction pipe is arranged in the first through hole and the second through hole in a penetrating mode so as to reduce the stirring influence range of the oil suction pipe on the oil through the oil stabilizing structure. In this way, the outer diameter D1 of the oil suction pipe, the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole satisfy: d1+ a is not less than D3 and not more than D2, a is not less than 0.1mm and not more than 0.3mm, so that the minimum distance between the inner wall of the second through hole and the oil suction pipe is not less than 0.05mm and not more than 0.15mm, and the oil suction pipe is prevented from rubbing and colliding with the inner wall of the second through hole in the process of rotating along with the short shaft of the crankshaft, and the service life of the oil suction pipe and the oil stabilizing structure is not influenced. Wherein, due to the satisfaction between the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole: d3 is less than or equal to D2, so that the maximum distance between the inner wall of the second through hole and the oil suction pipe is less than or equal to (D2-D1)/2, the problem that the oil stabilizing structure cannot influence the stirring range of the oil suction pipe on oil due to overlarge distance between the inner wall of the second through hole and the oil suction pipe is avoided, the use reliability of the oil stabilizing structure is improved, bubbles generated by the oil under the stirring action of the oil suction pipe are effectively reduced, the problem that the oil suction reliability of the oil suction pipe of the compressor in the prior art is poor is solved, and the performance and the operation stability of the compressor are improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic cross-sectional view of a first embodiment of a compressor according to the present invention;

FIG. 2 shows a schematic cross-sectional view of a pump body assembly of the compressor of FIG. 1;

FIG. 3 shows a schematic cross-sectional view of a lower flange and oil stabilization structure of the compressor of FIG. 1;

FIG. 4 illustrates a perspective view of a lower flange and an oil stabilizing structure of the compressor of FIG. 1;

fig. 5 shows a top view of the lower flange of the second embodiment of the compressor according to the present invention;

FIG. 6 shows a schematic cross-sectional view of the lower flange of FIG. 5;

FIG. 7 shows a perspective view of the lower flange of FIG. 5;

fig. 8 shows a schematic cross-sectional view of an oil stabilizing structure of a second embodiment of a compressor according to the present invention;

FIG. 9 shows a perspective view of the oil stabilization structure of FIG. 8;

figure 10 shows a schematic cross-sectional view of a pump body assembly according to a third embodiment of the compressor of the present invention;

FIG. 11 shows a cross-sectional schematic view of an oil stabilizing structure of the compressor of FIG. 10;

FIG. 12 shows a perspective view of the oil stabilization structure of FIG. 11;

fig. 13 shows a top view of an oil stabilizing structure according to a fourth embodiment of the compressor of the present invention;

FIG. 14 shows a perspective view of the oil stabilization structure of FIG. 14;

FIG. 15 shows a top view of another configuration of the oil stabilization structure of FIG. 14;

FIG. 16 shows a perspective view of the oil stabilization structure of FIG. 16;

fig. 17 shows a top view of an oil stabilizing structure of an embodiment five of the compressor according to the present invention;

FIG. 18 shows a perspective view of the oil stabilization structure of FIG. 17;

FIG. 19 shows a top view of the oil stabilization structure of FIG. 17 with a shorter barrel length;

FIG. 20 shows a perspective view of the oil stabilization structure of FIG. 19;

fig. 21 is a schematic diagram of the overall structure of the first embodiment of the air conditioning system according to the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 20. a pump body assembly; 21. a cylinder assembly; 22. a piston; 23. a crankshaft; 30. an oil suction pipe; 40. a lower flange; 41. a first through hole; 50. an oil stabilizing structure; 51. a second through hole; 52. a cylinder body; 53. a connecting lug; 531. a third through hole; 54. a fourth via hole; 60. a mating component; 61. a first mating portion; 62. a second mating portion.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the oil suction reliability of an oil suction pipe of a compressor in the prior art is poor, the application provides the compressor.

Example one

As shown in fig. 1 to 4 and 21, the compressor includes a casing 10, a pump body assembly 20, an oil suction pipe 30, a lower flange 40 and an oil stabilizing structure 50, wherein the pump body assembly 20 is disposed in the casing 10, and the pump body assembly 20 includes a cylinder assembly 21, a piston 22 and a crankshaft 23. The oil suction pipe 30 is inserted into the short shaft of the crankshaft 23 for sucking oil located in the casing 10 into the pump body assembly 20. A lower flange 40 is provided below the cylinder assembly 21, the lower flange 40 having a first through hole 41. The oil stabilizing structure 50 is arranged on the surface of the lower flange 40 far away from the cylinder assembly 21, the oil stabilizing structure 50 is provided with a second through hole 51 communicated with the first through hole 41, and the oil suction pipe 30 is arranged in the first through hole 41 and the second through hole 51 in a penetrating way. Wherein, the outer diameter D1 of the oil suction pipe 30, the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole 51 satisfy: d1+ a is not less than D3 and not more than D2, and a is not less than 0.1mm and not more than 0.3mm.

By applying the technical scheme of the embodiment, the pump body assembly 20 of the compressor is arranged in the casing 10, and the pump body assembly 20 comprises a cylinder assembly 21, a piston 22 and a crankshaft 23; the lower flange 40 is arranged below the cylinder assembly 21 and is provided with a first through hole 41, and the oil stabilizing structure 50 is arranged on the surface of the lower flange 40 far away from the cylinder assembly 21 and is provided with a second through hole 51; one end of the oil suction pipe 30 is inserted into the short shaft of the crankshaft 23 to suck the oil in the casing 10 into the pump body assembly 20, and the other end of the oil suction pipe 30 is inserted into the first through hole 41 and the second through hole 51 to reduce the stirring influence range of the oil suction pipe 30 on the oil through the oil stabilizing structure 50. In this way, the outer diameter D1 of the oil suction pipe, the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole satisfy: d1+ a is not less than D3 and not more than D2, a is not less than 0.1mm and not more than 0.3mm, so that the minimum distance between the inner wall of the second through hole 51 and the oil suction pipe 30 is not less than 0.05mm and not more than 0.15mm, and the oil suction pipe 30 is prevented from rubbing and colliding with the inner wall of the second through hole 51 in the process of rotating along the short shaft of the crankshaft 23, and the service lives of the oil suction pipe 30 and the oil stabilizing structure 50 are influenced. Wherein, due to the satisfaction between the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole: d3 is less than or equal to D2, so that the maximum distance between the inner wall of the second through hole 51 and the oil suction pipe 30 is less than or equal to (D2-D1)/2, the problem that the oil stabilizing structure 50 cannot influence the stirring range of the oil suction pipe 30 on oil due to the overlarge distance between the inner wall of the second through hole and the oil suction pipe 30 is avoided, the use reliability of the oil stabilizing structure 50 is improved, bubbles generated by the oil under the stirring effect of the oil suction pipe 30 are effectively reduced, the problem that the oil suction reliability of the oil suction pipe of the compressor in the prior art is poor is solved, and the performance and the operation stability of the compressor are improved.

Specifically, when the oil suction pipe 30 is driven by the crankshaft short axis to rotate, the oil suction pipe 30 can stir the oil in the rotation process due to the self-deformation of the oil suction pipe 30 and the crankshaft short axis and the assembly error between the oil suction pipe 30 and the crankshaft short axis, and the oil stabilizing structure 50 sleeved outside the oil suction pipe 30 can prevent the stirring force from spreading in the oil, so that the stirring range is limited in the oil stabilizing structure 50, and the stirring range of the oil suction pipe 30 is effectively reduced.

In this embodiment, a =0.2mm, D1+0.2 ≦ D3 ≦ D2. Like this, the above-mentioned setting makes the value relation between the external diameter D1 of inhaling oil pipe, the external diameter D2 of minor axis and the internal diameter D3 of second through-hole more suitable to ensure that steady oily structure 50 can realize better steady oily effect, with the bubble that reduces fluid and produce under the stirring effect of inhaling oil pipe 30, promote the oil absorption reliability of inhaling oil pipe.

Optionally, a preset distance h is provided between the end surface of the oil stabilizing structure 50 far away from the lower flange 40 and the oil inlet end of the oil suction pipe 30, and the preset distance h and the outer diameter D2 of the short shaft satisfy the following condition: h/D2 is less than or equal to b, and b is less than or equal to 0.05mm and less than or equal to 0.15mm. Thus, the above arrangement makes the value of the preset distance h between the end surface of the oil stabilizing structure 50 far from the lower flange 40 and the oil inlet end of the oil suction pipe 30 be more suitable, so as to avoid that the preset distance h is too large, which results in that the stirring action range of the oil stabilizing structure 50 cannot be effectively reduced by the oil suction pipe 30.

In this example, b is 0.1mm and h/D2 is not more than 0.1mm. The arrangement between the preset distance h and the outer diameter D2 of the short shaft can prevent the oil suction pipe 30 from generating a stirring effect below the oil stabilizing structure 50 to cause the failure of the oil stabilizing structure 50, and further improve the use reliability of the oil stabilizing structure 50.

As shown in fig. 1 to 4, the first through hole 41 and the second through hole 51 are coaxially arranged. Thus, the arrangement is such that the oil suction pipe 30 is inserted into the first through hole 41 and the second through hole 51, so that the oil stabilizing structure 50 can achieve the oil stabilizing function; on the other hand, the oil suction pipe 30 can be prevented from moving and interfering with the inner walls of the first through hole 41 and the second through hole 51 in the moving process to cause collision between the two, and the operation reliability of the compressor is further improved. Meanwhile, the oil stabilizing structure 50 has the same oil stabilizing effect on all parts of the oil suction pipe 30 due to the arrangement, and the anti-stirring effect of the oil stabilizing structure 50 is further improved.

As shown in fig. 1 to 4, the lower flange 40 and the oil stabilizing structure 50 are integrally formed. Therefore, on one hand, the arrangement enables the worker not to need to connect the lower flange 40 and the oil stabilizing structure 50, so that the assembly steps of the worker are reduced, and the labor intensity of the worker is reduced; on the other hand, the lower flange 40 and the oil stabilizing structure 50 have better connection strength, so that the lower flange 40 and the oil stabilizing structure 50 are prevented from loosening or even falling off in the long-term operation process of the compressor, and the use reliability of the oil stabilizing structure 50 is further improved.

Specifically, the worker only needs to insert the bolts into the bolt holes of the lower flange 40 and the bolt holes of the connecting surface between the cylinder assembly 21 and the lower flange 40, and the bolts are screwed and fastened, so that the connection among the lower flange 40, the oil stabilizing structure 50 and the cylinder assembly 21 can be realized, the assembling steps of the worker are reduced, and the labor intensity of the worker is reduced.

Alternatively, the oil stabilizing structure 50 is made of PBT plastic, or stainless steel, or aluminum alloy. Therefore, the oil stabilizing structure 50 needs to be soaked in oil for a long time, and the oil stabilizing structure 50 made of the materials can be prevented from being corroded or rusted by the oil, so that the service life of the oil stabilizing structure 50 is prolonged.

As shown in fig. 1 and fig. 21, the utility model also provides an air conditioning system, follow the low temperature low pressure gas of evaporimeter exhaust after the compressor compression is the highly compressed gas of high temperature, flow into the condenser after the compressor discharge, condense into high-pressure liquid in the condenser, the wet vapour that rethread throttling arrangement becomes low temperature low pressure, low temperature low pressure wet vapour gets into the evaporimeter and gasifies the refrigeration in order to form the circulation. The cavity area through which the refrigerant flows in the refrigerant circulation process is divided into two parts: a cavity area in the compressor shell assembly is Vysj, and a cavity area of a refrigerant circulating flow space of the air conditioning system matched with the compressor, except the compressor, is Vxt; the cavity area Vysj inside the compressor shell 10 is divided into five parts: the cavity above the upper end face of the rotor iron core is V1, the cavity between the upper end face and the lower end face of the rotor iron core is V2, the cavity between the lower end face of the rotor iron core and the lower end face of the silencer and positioned outside the pump body assembly 20 is V3, the refrigerant flowing cavity in the pump body assembly 20 is V4, and the cavity area below the lower end face of the silencer and positioned outside the pump body assembly 20 is V5; the refrigerant circulation flowing space of the air conditioning system matched with the compressor is a cavity area except the compressor, and the volume of each cavity needs to be satisfied: V5/(V1 + V2+ V3+ V4) is more than or equal to 1.0 and less than or equal to 1.8; vxt/Vysj is more than or equal to 0.8 and less than or equal to 5, so that the air-conditioning system can be kept to operate at high energy efficiency under all working conditions all the year round.

Example two

The difference between the second embodiment and the first embodiment is that: the connection between the oil stabilizing structure 50 and the lower flange 40 is different.

As shown in fig. 5 to 9, the compressor further includes a fitting assembly 60, the fitting assembly 60 includes a first fitting portion 61 and a second fitting portion 62, the first fitting portion 61 is disposed on the lower flange 40, the second fitting portion 62 is disposed on the oil stabilizing structure 50, one of the first fitting portion 61 and the second fitting portion 62 is a protrusion, the other one of the first fitting portion 61 and the second fitting portion 62 is a recess, and the protrusion extends into the recess and is in limit fit with the recess to connect the lower flange 40 and the oil stabilizing structure 50. Wherein, there is one mating component 60; alternatively, the fitting assembly 60 is plural, and the plural fitting assemblies 60 are arranged at intervals around the circumference of the oil suction pipe 30. Thus, the arrangement is that on one hand, the lower flange 40 and the oil stabilizing structure 50 are connected through the matching assembly 60, and the lower flange 40 and the oil stabilizing structure 50 are detachably connected, so that the lower flange 40 and the oil stabilizing structure 50 can be conveniently replaced and maintained; on the other hand, the connecting structure between the lower flange 40 and the oil stabilizing structure 50 is simpler, and is easy to process and realize, so that the processing difficulty of workers is reduced. Meanwhile, the lower flange 40 and the oil stabilizing structure 50 which are designed in a split mode enable workers to replace the oil stabilizing structure 50 independently according to working conditions and using requirements, replacement cost of the oil stabilizing structure 50 is reduced, and using universality of the oil stabilizing structure 50 is improved.

In the present embodiment, the first fitting portion 61 is a concave portion, and the second fitting portion 62 is a convex portion. When the oil stabilizing structure 50 needs to be installed, a worker only needs to stretch the protrusion on the oil stabilizing structure 50 into the concave part of the lower flange 40, so that the installation of the lower flange 40 and the oil stabilizing structure 50 can be realized, and the operation difficulty of the worker is further reduced.

It should be noted that the structures of the first fitting portion 61 and the second fitting portion 62 are not limited to this, and may be adjusted according to the working conditions and the use requirements. In other embodiments not shown in the drawings, the first mating portion is a protrusion and the second mating portion is a recess.

In the present embodiment, there are three fitting assemblies 60, and the three fitting assemblies 60 are arranged in an equilateral triangle around the circumference of the suction pipe 30. Therefore, on one hand, the arrangement increases the assembly area between the lower flange 40 and the oil stabilizing structure 50, and further improves the connection stability between the lower flange and the oil stabilizing structure; on the other hand, the stress of the three fitting assemblies 60 is more uniform, so that the fitting assembly 60 is prevented from loosening or even falling off due to the fact that the stress of the one-side fitting assembly 60 is too large, and the connection stability between the lower flange 40 and the oil stabilizing structure 50 is further improved.

It should be noted that the number of the engaging assemblies 60 is not limited to this, and can be adjusted according to the working condition and the use requirement. Optionally, the number of mating assemblies 60 is one, or two, or four, or five, or six, or more.

Optionally, the protrusion is in interference fit with the recess; alternatively, the outer peripheral surface of the protrusion has an external thread, and the inner peripheral surface of the recess has an internal thread, which is screwed with the external thread. Thus, when the protrusion and the recess are in threaded fit, the threaded fit can increase the connection strength between the protrusion and the recess, and further improve the connection reliability between the protrusion and the recess. Meanwhile, the arrangement enables the connection method between the protrusion and the concave part to be more flexible and various so as to adapt to different working conditions and use requirements, and the processing flexibility of workers is also improved.

In the present embodiment, the protrusion and the recess are in an interference fit, so that the protrusion and the recess are connected by a pressing force therebetween. Therefore, due to the arrangement, the working personnel do not need to process the convex outer peripheral surface and the concave inner peripheral surface, and the processing difficulty of the working personnel is further reduced.

Optionally, there is one oil stabilizing structure 50; alternatively, there are a plurality of oil stabilizing structures 50, and the plurality of oil stabilizing structures 50 are connected in sequence along the extending direction of the oil suction pipe 30. Like this, above-mentioned setting makes oil stabilizing structure 50's structure more nimble, various to adapt to different operating mode and user demand, also promoted staff's processing flexibility.

In this embodiment, the oil stabilizing structure 50 is one, so that the oil stabilizing structure 50 has better structural strength, and the service life of the oil stabilizing structure 50 is further prolonged.

EXAMPLE III

The difference between the third embodiment and the second embodiment is that: the oil stabilizing structures 50 are different in structure and number.

As shown in fig. 10 to 12, the number of the oil stabilizing structures 50 is four, so that the length of the oil stabilizing structure 50 matches the length of the oil suction pipe 30, and the oil stabilizing structure 50 can effectively reduce the stirring range of the oil suction pipe 30.

In the present embodiment, six fitting assemblies 60 are provided between two adjacent mounting surfaces, and the six fitting assemblies 60 are uniformly distributed around the circumference of the suction pipe 30. Therefore, the arrangement increases the assembly area between the lower flange 40 and the oil stabilizing structure 50, thereby improving the connection stability of the lower flange and the oil stabilizing structure and improving the use reliability of the oil stabilizing structure.

It should be noted that the number of the fitting assemblies 60 is not limited to this, and can be adjusted according to the working condition and the use requirement. Optionally, the number of mating assemblies 60 is one, or two, or three, or four, or five, or more.

Example four

The difference between the fourth embodiment and the second embodiment is that: the oil stabilizing structure 50 and the lower flange 40 are connected in different manners.

As shown in fig. 13 to 16, the oil stabilizing structure 50 is provided with four fourth through holes 54, the number of the fourth through holes 54 is three, the three fourth through holes 54 are arranged in an equilateral triangle around the oil suction pipe, the lower flange 40 has screw holes arranged in one-to-one correspondence with the fourth through holes 54, and a worker can insert screws into one oil stabilizing structure 50 or a plurality of oil stabilizing structures 50, and can install the oil stabilizing structure 50 by screwing and fastening the screws into the screw holes. Like this, above-mentioned setting makes oil stabilizing structure 50's mounting means more nimble, various to adapt to different operating mode and user demand, also promoted staff's processing flexibility.

It should be noted that, the oil stabilizing structure 50 with a longer length and the oil stabilizing structure 50 with a shorter length may be used in combination, that is, a plurality of oil stabilizing structures 50 with a shorter length are additionally installed between the oil stabilizing structure 50 with a longer length and the lower flange 40, so as to adjust the overall length of the oil stabilizing structure 50.

EXAMPLE five

The difference between the fifth embodiment and the first embodiment is that: the oil stabilizing structure has different structures.

As shown in fig. 17 to 20, the oil stabilizing structure 50 includes a cylinder 52, a connecting lug 53 and a fastener, and an inner cavity of the cylinder 52 forms a second through hole 51. The connection lug 53 is provided on the outer circumferential surface of the cylinder 52, and the connection lug 53 has a third through hole 531. Fasteners are inserted through the third through holes 531 and the lower flange 40 to connect the lower flange 40 and the oil stabilizing structure 50. Wherein, the connecting lug 53 is one; alternatively, the connecting lug 53 may be plural, and the plural connecting lugs 53 are provided at intervals in the circumferential direction of the cylinder 52. Like this, above-mentioned setting makes oil stabilizing structure 50 can be connected with lower flange 40 through connecting lug 53 to make oil stabilizing structure 50's structure smaller and exquisite, nimble, and then realized oil stabilizing structure 50's lightweight production, reduced oil stabilizing structure 50's weight.

Specifically, the lower flange 40 has a screw hole, and a worker only needs to insert a fastener into the third through hole 531, and then screw and fasten the fastener in the screw hole, so as to mount the oil stabilizing structure 50 on the lower flange 40.

Alternatively, the connecting lugs 53 are plate-shaped, and the thickness of the connecting lugs 53 is less than or equal to the length of the cylinder 52. Like this, above-mentioned setting makes the thickness of connecting lug 53 select more nimble, various to adapt to different operating mode and user demand, also promoted staff's processing flexibility.

In the present embodiment, when the length of the cylinder 52 is long, the thickness of the connecting lug 53 is smaller than the length of the cylinder 52, so as to achieve a light weight design of the oil stabilizing structure 50; when the length of the cylinder 52 is short, the thickness of the connecting lug 53 is equal to the length of the cylinder 52 to ensure the connecting strength of the two.

It should be noted that, the oil stabilizing structure 50 with the longer cylinder 52 and the oil stabilizing structure 50 with the shorter cylinder 52 may be used in combination, that is, a plurality of oil stabilizing structures 50 with the shorter cylinder length are additionally installed between the oil stabilizing structure 50 with the longer cylinder 52 and the lower flange 40, so as to adjust the overall length of the oil stabilizing structure 50.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the pump body assembly of the compressor is arranged in the shell and comprises a cylinder assembly, a piston and a crankshaft; the lower flange is arranged below the cylinder component and is provided with a first through hole, and the oil stabilizing structure is arranged on the surface of the lower flange, which is far away from the cylinder component, and is provided with a second through hole; one end of the oil suction pipe is arranged in the short shaft of the crankshaft in a penetrating mode so as to suck oil in the shell to the pump body assembly, and the other end of the oil suction pipe is arranged in the first through hole and the second through hole in a penetrating mode so as to reduce the stirring influence range of the oil suction pipe on the oil through the oil stabilizing structure. In this way, the outer diameter D1 of the oil suction pipe, the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole satisfy: d1+ a is not less than D3 and not more than D2, a is not less than 0.1mm and not more than 0.3mm, so that the minimum distance between the inner wall of the second through hole and the oil suction pipe is not less than 0.05mm and not more than 0.15mm, and the oil suction pipe is prevented from rubbing and colliding with the inner wall of the second through hole in the process of rotating along with the short shaft of the crankshaft, and the service life of the oil suction pipe and the oil stabilizing structure is not influenced. Wherein, due to the satisfaction between the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole: d3 is less than or equal to D2, so that the maximum distance between the inner wall of the second through hole and the oil suction pipe is less than or equal to (D2-D1)/2, the problem that the oil stabilizing structure cannot influence the stirring range of the oil suction pipe on oil due to the overlarge distance between the inner wall of the second through hole and the oil suction pipe is avoided, the use reliability of the oil stabilizing structure is further improved, bubbles generated by the oil under the stirring effect of the oil suction pipe are effectively reduced, the problem that the oil suction reliability of the oil suction pipe of the compressor in the prior art is poor is solved, and the performance and the operation stability of the compressor are improved.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A compressor, comprising:

a housing (10);

the pump body assembly (20) is arranged in the machine shell (10), and the pump body assembly (20) comprises a cylinder assembly (21), a piston (22) and a crankshaft (23);

the oil suction pipe (30) is arranged in the short shaft of the crankshaft (23) in a penetrating mode, and is used for sucking oil in the shell (10) into the pump body assembly (20);

a lower flange (40) disposed below the cylinder assembly (21), the lower flange (40) having a first through hole (41);

the oil stabilizing structure (50) is arranged on the surface, far away from the cylinder assembly (21), of the lower flange (40), the oil stabilizing structure (50) is provided with a second through hole (51) communicated with the first through hole (41), and the oil suction pipe (30) is arranged in the first through hole (41) and the second through hole (51) in a penetrating mode;

wherein the outer diameter D1 of the oil suction pipe (30), the outer diameter D2 of the short shaft and the inner diameter D3 of the second through hole (51) satisfy the following conditions: d1+ a is not less than D3 and not more than D2, and a is not less than 0.1mm and not more than 0.3mm.

2. The compressor according to claim 1, wherein a preset distance h is provided between an end surface of the oil stabilizing structure (50) away from the lower flange (40) and an oil inlet end of the oil suction pipe (30), and the preset distance h and an outer diameter D2 of the short shaft satisfy that: h/D2 is less than or equal to b, and b is less than or equal to 0.05mm and less than or equal to 0.15mm.

3. Compressor according to claim 1, characterized in that said first through hole (41) is arranged coaxially with said second through hole (51).

4. The compressor of claim 1, wherein the lower flange (40) and the oil stabilizing structure (50) are of an integrally formed construction.

5. The compressor of claim 1, further comprising:

the matching assembly (60) comprises a first matching part (61) and a second matching part (62), the first matching part (61) is arranged on the lower flange (40), the second matching part (62) is arranged on the oil stabilizing structure (50), one of the first matching part (61) and the second matching part (62) is a protrusion, the other one of the first matching part (61) and the second matching part (62) is a concave part, and the protrusion extends into the concave part and is in limit fit with the concave part to connect the lower flange (40) and the oil stabilizing structure (50);

wherein the mating assembly (60) is one; or, the matching assemblies (60) are multiple, and the matching assemblies (60) are arranged around the circumference of the oil suction pipe (30) at intervals.

6. The compressor of claim 5, wherein the protrusion has an interference fit with the recess; or the outer peripheral surface of the protrusion is provided with an external thread, and the inner peripheral surface of the recess is provided with an internal thread, and the internal thread is in threaded connection with the external thread.

7. Compressor according to claim 1, characterized in that said oil-stabilizing structure (50) is one; or the number of the oil stabilizing structures (50) is multiple, and the oil stabilizing structures (50) are sequentially connected along the extending direction of the oil suction pipe (30).

8. The compressor of claim 1, wherein the oil stabilizing structure (50) comprises:

a cylinder (52), wherein the inner cavity of the cylinder (52) forms the second through hole (51);

a connecting lug (53) provided on an outer circumferential surface of the cylinder (52), the connecting lug (53) having a third through hole (531);

fasteners are arranged in the third through holes (531) and the lower flange (40) in a penetrating mode to connect the lower flange (40) and the oil stabilizing structure (50);

wherein the number of the connecting lugs (53) is one; or, the connecting lugs (53) are multiple, and the connecting lugs (53) are arranged at intervals along the circumferential direction of the cylinder body (52).

9. Compressor according to claim 8, characterized in that the connecting lug (53) is plate-shaped, the thickness of the connecting lug (53) being less than or equal to the length of the cylinder (52).

10. Compressor according to claim 1, characterized in that the oil-stabilizing structure (50) is made of PBT plastic, or stainless steel, or an aluminium alloy.

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