CN117307492A - Pump body assembly, rotor compressor and air conditioner - Google Patents

Abstract

The invention provides a pump body assembly, a rotor compressor and an air conditioner, which comprise a crankshaft, an upper flange and a lower flange, wherein the upper flange and the lower flange are used for supporting the crankshaft, the crankshaft comprises a long shaft and a short shaft, a first outer spherical surface is arranged on the outer circular surface of the long shaft and comprises a first upper spherical surface and a first lower spherical surface, the first outer spherical surface is provided with a first big circle perpendicular to the axis of the crankshaft, and the first upper spherical surface and the first lower spherical surface are respectively arranged on the upper side and the lower side of the first big circle; the inner hole of the upper flange comprises a first inner spherical surface matched with the first outer spherical surface; the outer circular surface of the short shaft is provided with a second outer spherical surface, the second outer spherical surface comprises a second upper spherical surface and a second lower spherical surface, the second outer spherical surface is provided with a second large circle perpendicular to the axis of the crankshaft, and the second upper spherical surface and the second lower spherical surface are respectively arranged on the upper side and the lower side of the second large circle; the inner hole of the lower flange comprises a second inner spherical surface matched with the second outer spherical surface, so that the technical problem of stress concentration between the crankshaft and the upper and lower flanges due to deflection of the crankshaft in the prior art is solved.

Description

Pump body assembly, rotor compressor and air conditioner

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to a pump body assembly, a rotor compressor and an air conditioner.

Background

The structure of the rotor compressor for the current general air conditioner mainly comprises a shell, a motor component, a pump body component and a liquid separator component, as shown in fig. 18-20, wherein the pump body component mainly comprises a crankshaft, an upper flange, a lower flange and a cylinder, the operation principle is that the motor drives the crankshaft to rotate, the gas in the pump body is compressed, and then the high-pressure refrigerant is discharged, so that the final refrigerating or heating effect is realized. The upper flange, the lower flange and the crankshaft are used as grinding parts, the contact stress state and the lubrication performance of the upper flange, the lower flange and the crankshaft are of critical influence on friction power consumption and compressor reliability, the contact part of the crankshaft and the flange of the rotor compressor in the prior art is the contact of a cylindrical surface and a cylindrical surface, the contact stress is larger, the friction power consumption is generally increased, the abrasion is aggravated when the lubrication performance is poorer, the reliability is reduced, particularly, the crankshaft is used as a rotating part and is changed along with the change of the rotating speed, the deflection of the crankshaft is changed to a certain extent, the contact state of the crankshaft and the flange is further changed to a certain extent, the stress concentration condition is caused, the rule is that the higher the rotating speed or the higher the frequency is, the deflection of the crankshaft is larger, the contact part area is smaller, the stress is concentrated, the contact stress of the crankshaft and the flange is suddenly increased, the friction power consumption is increased, and the contact stress is also increased, and the abrasion is caused, and the reliability is reduced. Therefore, the stress state and the abrasion problem between the crankshaft and the upper flange and the lower flange severely restrict the compressor energy efficiency and the reliability, so that the phenomenon of stress concentration of the crankshaft and the flanges in the operation process is improved, and the technical problem to be solved at present.

In the prior art, as described in patent CN102251953B, "compressor pump body structure and compressor with the pump body structure", the pump body structure is mainly characterized in that the lower flange and the lower thrust surface of the crankshaft are matched to form a hemispherical surface or a spherical table or a spherical crown, the main idea is to change the contact mode of the thrust surface of the crankshaft and the horizontal surface of the lower flange, change the contact stress of the thrust surface of the crankshaft and the lower flange, reduce the load of the crankshaft on the flange, and the crankshaft can generate certain deflection in the rotating process of the crankshaft, the contact area of the spherical surface and the flange can incline, the upper end of the hemispherical surface exceeds the horizontal surface of the flange to influence the movement of the compressor rotor, and the purpose of the scheme is to aim at the load of the thrust surface of the crankshaft and the flange, and the contact form and the contact stress of the inner hole of the crankshaft and the flange cannot be changed;

patent CN110566463a, "crank shaft and compressor with the same", discloses a crank shaft for compressor, which is characterized in that the crank shaft protrudes outwards to form a thrust part, and the purpose is to increase the thrust area of the crank shaft contacting with the flange, reduce the contact pressure, and improve the wear resistance of the wear surface. From the analysis of the structure and the actual target, the contact between the crankshaft and the flange is also a hemispherical structure, and the structure mainly changes the contact area between the thrust part of the crankshaft and the horizontal plane of the flange, thereby changing the contact stress and abrasion of the thrust surface of the crankshaft and the flange, and also not changing the contact stress of the inner holes of the crankshaft and the flange;

patent CN207111433U (thrust component of rotary compressor and rotary compressor) describes a crankshaft for compressor, and is characterized by that on the thrust surface of the crankshaft several spaced flanges are set, and its main purpose is also to change the contact mode of thrust surface of the crankshaft and flange surface so as to reduce the contact stress of thrust surface of the crankshaft and flange surface and attain the action of reducing wear and power consumption, and its structure also can not change the contact form and contact stress of internal holes of the crankshaft and flange.

How to reduce the contact stress of the crankshaft and the flange hole, improve the friction state between the crankshaft and the flange, and achieve the aims of relatively reducing the contact stress, reducing the abrasion and enhancing the reliability is a technical problem which needs to be solved at present.

Disclosure of Invention

Therefore, the invention provides a pump body assembly, a rotor compressor and an air conditioner, which can solve the technical problem of stress concentration between a crankshaft and an upper flange and between the crankshaft and a lower flange due to deflection of the crankshaft in the prior art.

In order to solve the above problems, the present invention provides a pump assembly, a rotor compressor and an air conditioner, wherein:

the invention provides a pump body assembly, which comprises a crankshaft, an upper flange and a lower flange, wherein the upper flange and the lower flange are used for supporting the crankshaft, and the crankshaft comprises a long shaft and a short shaft; the inner hole of the upper flange comprises a first inner spherical surface in spherical contact with the first outer spherical surface;

and/or the number of the groups of groups,

the outer circular surface of the short shaft is provided with a second outer spherical surface protruding out of the outer circular surface of the long shaft, the second outer spherical surface comprises a second upper spherical surface and a second lower spherical surface, the second outer spherical surface is provided with a second large circle perpendicular to the axis of the crankshaft, and the second upper spherical surface and the second lower spherical surface are respectively arranged on the upper side and the lower side of the second large circle; the inner bore of the lower flange includes a second inner sphere in contact with the second outer sphere.

In some embodiments, the diameter of the first outer sphere is greater than the diameter of the major axis and the diameter of the second outer sphere is greater than the diameter of the minor axis.

In some embodiments, the upper flange comprises a first upper flange and a second upper flange separated along a diameter of the upper flange; and/or the lower flange comprises a first lower flange and a second lower flange separated along a diameter of the lower flange.

In some embodiments, the inner bore surface of the upper flange is provided with a first upper groove extending along the axial direction of the upper flange, the first upper groove being provided at the junction of the first upper flange and the second upper flange; and/or, the inner hole surface of the lower flange is provided with a first lower groove extending along the axial direction of the lower flange, and the first lower groove is arranged at the joint of the first lower flange and the second lower flange.

In some embodiments, the lower end surface of the upper flange is provided with a second upper groove extending along the radial direction of the upper flange, the second upper groove is arranged at the joint of the first upper flange and the second upper flange, and the second upper groove is communicated with the first upper groove; and/or, the upper end face of the lower flange is provided with a second lower groove extending along the radial direction of the lower flange, the second lower groove is arranged at the joint of the first lower flange and the second lower flange, and the second lower groove is communicated with the first lower groove.

In some embodiments, the upper flange includes an upper groove provided on a lower end surface of the upper flange and an upper rotating block provided within the upper groove; the upper rotating block comprises a first upper half block and a second upper half block, and the first inner spherical surface is arranged between the first upper half block and the second upper half block;

and/or the number of the groups of groups,

the lower flange comprises a lower groove arranged on the upper end face of the lower flange and a lower rotating block arranged in the lower groove; the lower rotating block comprises a first lower half block and a second lower half block, and the second inner spherical surface is arranged between the first lower half block and the second lower half block.

In some embodiments, when the first upper half block and the second upper half block are combined together to wrap around a first spherical surface, a space is formed between the first upper half block and the second upper half block.

In some embodiments, the upper turning block is rotatable within the upper groove about an axis of the inner bore of the upper flange;

and/or the lower rotating block can rotate around the axis of the inner hole of the lower flange in the lower groove.

In some embodiments, an upper bearing is arranged in the upper groove, and the upper rotating block is arranged inside an inner ring of the upper bearing;

and/or a lower bearing is arranged in the lower groove, and the lower rotating block is arranged inside the inner ring of the lower bearing.

In a second aspect, the present invention provides a rotor compressor, including the pump assembly.

In a third aspect, the present invention provides an air conditioner, including the rotor compressor.

According to the invention, the first outer spherical surface is arranged on the outer circumferential surface of the long shaft, the second outer spherical surface is arranged on the outer circumferential surface of the short shaft, the first inner spherical surface matched with the first outer spherical surface is arranged on the inner hole of the upper flange, and the second inner spherical surface matched with the second outer spherical surface is arranged on the inner hole of the lower flange, so that the acting area between the crankshaft and the upper flange and the acting area between the crankshaft and the lower flange are basically unchanged when the deflection of the crankshaft changes, the acting force between the crankshaft and the upper flange and the acting force between the crankshaft and the lower flange are respectively uniform, the stress concentration condition is greatly improved, and the abrasion between the first outer spherical surface and the first inner spherical surface, the abrasion between the second outer spherical surface and the second inner spherical surface are obviously reduced, and the application range and the service life of the pump body assembly are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a pump body assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a pump body assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2 in accordance with an embodiment of the present invention;

FIG. 4 is a radial cross-sectional view of an upper flange according to an embodiment of the present invention;

FIG. 5 is an enlarged view of the portion B of FIG. 4 according to an embodiment of the present invention;

FIG. 6 is an axial schematic view of a flange according to an embodiment of the present invention;

FIG. 7 is an enlarged view of FIG. 6 at C according to an embodiment of the present invention;

FIG. 8 is a radial schematic view of a first upper flange according to an embodiment of the present invention;

FIG. 9 is an enlarged view of the portion D of FIG. 8 according to an embodiment of the present invention;

FIG. 10 is a radial cross-sectional view of a lower flange according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a crankshaft in accordance with an embodiment of the present invention;

FIG. 12 is a radial cross-sectional view of an embodiment of the invention with a rotating block disposed on the flange;

FIG. 13 is a radial cross-sectional view of the upper flange with the rotor block removed in accordance with an embodiment of the present invention;

FIG. 14 is a radial cross-sectional view of a rotor block according to an embodiment of the present invention;

FIG. 15 is an axial schematic view of a rotor block according to an embodiment of the present invention;

FIG. 16 is a radial cross-sectional view of an upper flange of an embodiment of the present invention with an upper bearing;

FIG. 17 is an axial schematic view of a rotor block of an embodiment of the present invention disposed within an upper bearing;

FIG. 18 is a schematic diagram of a prior art rotor compressor;

FIG. 19 is a schematic view of a prior art upper flange;

FIG. 20 is a prior art crankshaft schematic;

FIG. 21 is a comparison table of power consumption according to an embodiment of the present invention and the prior art.

The reference numerals are expressed as:

1. a crankshaft; 101. a long axis; 102. a short shaft; 103. a eccentric portion; 201. an upper flange; 2011. a first upper flange; 2012. a second upper flange; 202. a lower flange; 2021. a first lower flange; 2022. a second lower flange; 301. a first outer spherical surface; 3011. a first upper spherical surface; 3012. a first lower spherical surface; 302. a second outer spherical surface; 3021. a second upper spherical surface; 3022. a second lower spherical surface; 401. a first inner spherical surface; 402. a second inner spherical surface; 501. a first upper trench; 502. a second upper trench; 503. an upper groove; 601. a first upper half block; 602. a second upper half block; 603. spacing; 6. a rotating block; 7. and (5) an upper bearing.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. It should be understood, however, that the construction, proportion, and size of the drawings, in which the present invention is practiced, are all intended to be illustrative only, and not to limit the scope of the present invention, which should be defined by the appended claims. Any structural modification, proportional change or size adjustment should still fall within the scope of the disclosure without affecting the efficacy and achievement of the present invention. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The invention provides a pump body assembly, a rotor compressor and an air conditioner, which can solve the technical problem of stress concentration between a crankshaft and an upper flange and between the crankshaft and a lower flange caused by deflection of the crankshaft in the prior art.

As shown in fig. 1 to 17, a pump body assembly comprises a crankshaft 1 and an upper flange 201 and a lower flange 202 for supporting the crankshaft 1, wherein the crankshaft 1 comprises a long shaft 101 and a short shaft 102, and is characterized in that a first outer spherical surface 301 protruding out of the outer circular surface of the long shaft 101 is arranged on the outer circular surface of the long shaft 101, the first outer spherical surface 301 comprises a first upper spherical surface 3011 and a first lower spherical surface 3012, the first outer spherical surface 301 is provided with a first big circle perpendicular to the axis of the crankshaft 1, and the first upper spherical surface 3011 and the first lower spherical surface 3012 are respectively arranged on the upper side and the lower side of the first big circle; the inner bore of the upper flange 201 includes a first inner sphere 401 in spherical contact with the first outer sphere 301;

and/or the number of the groups of groups,

the outer circular surface of the short shaft 102 is provided with a second outer spherical surface 302 protruding out of the outer circular surface of the long shaft 101, the second outer spherical surface 302 comprises a second upper spherical surface 3021 and a second lower spherical surface 3022, the second outer spherical surface 302 is provided with a second big circle perpendicular to the axis of the crankshaft 1, and the second upper spherical surface 3021 and the second lower spherical surface 3022 are respectively arranged on the upper side and the lower side of the second big circle; the bore of the lower flange 202 includes a second inner sphere 402 that is in spherical contact with the second outer sphere 302.

The big circle of the sphere is a circle passing through the center of the sphere, and the first big circle is a circle passing through the sphere of the first sphere and perpendicular to the axis of the crankshaft 1; by making the first spherical surface include the first upper spherical surface 3011 and the first lower spherical surface 3012 provided on both sides of the first large circle, the first outer spherical surface 301 and the first inner spherical surface 401 are always in spherical contact, and the contact area is substantially unchanged, regardless of the deflection direction of the long axis 101 of the crankshaft 1; likewise, the second outer sphere 302 is also in constant spherical contact with the second inner sphere 402, and the contact area is substantially constant.

By providing the first outer spherical surface 301 on the outer circumferential surface of the long shaft 101 of the crankshaft 1, the first inner spherical surface 401 encloses a spherical cavity, the first outer spherical surface 301 is provided in the spherical cavity, and the first outer spherical surface 301 is spherically fitted with the first inner spherical surface 401. When the running rotation speed of the crankshaft 1 changes, the deflection of the crankshaft 1 also changes correspondingly, the contact surface of the crankshaft 1 and the upper flange 201 always keeps stable spherical contact, the contact area of the crankshaft 1 and the upper flange 201 always keeps unchanged, and the contact form of the crankshaft 1 and the upper flange 201 is not changed, so that the stress concentration condition of the crankshaft is greatly improved, the abrasion of the crankshaft is obviously reduced, the running range of the pump body assembly is obviously widened (compared with the prior art, when the same concentrated stress is generated, the rotation speed of the crankshaft 1 is higher), the application range of the pump body assembly is improved, and the service life of the pump body assembly is prolonged. When the pump body assembly is applied to the compressor, the working frequency range of the compressor is also higher, and the service life is also longer.

Likewise, the short shaft 102 of the crankshaft 1 is provided with a second outer spherical surface 302, the inner hole of the lower flange 202 is provided with a second inner spherical surface 402, the second outer spherical surface 302 of the crankshaft 1 is arranged in a spherical cavity formed by the second inner spherical surface 402, and the second outer spherical surface 302 is in spherical fit with the second inner spherical surface 402; the technical effect between the short shaft 102 and the lower flange 202 is the same as the technical effect between the long shaft 101 and the upper flange 201; in addition, the long shaft 101 and the short shaft 102 of the crankshaft 1 are respectively matched with the upper flange 201 and the lower flange 202 in a spherical matching mode, so that the bending resistance of the crankshaft 1 is further improved, the deflection of the crankshaft 1 is reduced, and the rotation stability of the crankshaft 1 is improved. The pump body component is used for improving the contact stress state of the flange of the crankshaft 1 of the compressor, reducing the abrasion risk of the flange and the crankshaft 1, and obviously improving and prolonging the reliable operation and service life of the compressor.

Preferably, the diameter of the first outer sphere 301 is larger than the diameter of the long axis 101, and the diameter of the second outer sphere 302 is larger than the diameter of the short axis 102.

The first outer spherical surface 301 is of a convex spherical structure, and the second outer spherical surface 302 is of a convex spherical structure, so that on one hand, the structural strength of the crankshaft 1 is effectively improved, on the other hand, when the crankshaft 1 generates deflection, the first outer spherical surface 301 and the first inner spherical surface 401 can still be in spherical contact, the second outer spherical surface 302 is still in spherical contact with the second inner spherical surface 402, and the concentrated stress between the crankshaft 1 and the upper flange 201 and the lower flange 202 is effectively reduced.

Preferably, in order to enable the crankshaft 1 to be assembled with the upper flange 201 and the lower flange 202, two embodiments are disclosed in this application, embodiment one:

as shown in fig. 1, 4-5, the upper flange 201 includes a first upper flange 2011 and a second upper flange 2012 that are separated along a diameter of the upper flange 201; and/or, as shown in fig. 10-11, the lower flange 202 includes a first lower flange 2021 and a second lower flange 2022 that are separated along a diameter of the lower flange 202.

When the upper flange 201 is divided into the first upper flange 2011 and the second upper flange 2012 which are separated along the diameter, and the first inner sphere 401 is also divided into two hemispheres, the first upper flange 2011 and the second upper flange 2012 are separated to wrap the first outer sphere 301 by the two hemispheres, and then the first upper flange 2011 and the second upper flange 2012 are fixed together by bolts. By assembling the long shaft 101 and the upper flange 201 of the crankshaft 1 in the above manner, the production efficiency is improved. Similarly, when the lower flange 202 is divided into the first lower flange 2021 and the second lower flange 2022 which are separated along the diameter, and the second inner spherical surface 402 is also divided into two hemispherical surfaces, the first lower flange 2021 and the second lower flange 2022 are separated to wrap the second outer spherical surface 302 by the two hemispherical surfaces, and then the first lower flange 2021 and the second lower flange 2022 are fixed together by bolts. By assembling the long shaft 101 of the crankshaft 1 and the upper flange 201 and assembling the short shaft 102 of the crankshaft 1 and the lower flange 202 in the above manner, the production efficiency is improved.

Preferably, as shown in fig. 4 to 7, the inner hole surface of the upper flange 201 is provided with a first upper groove 501 extending along the axial direction of the upper flange 201, and the first upper groove 501 is disposed at the junction of the first upper flange 2011 and the second upper flange 2012; and/or, the inner hole surface of the lower flange 202 is provided with a first lower groove extending along the axial direction of the lower flange 202, and the first lower groove is arranged at the joint of the first lower flange 2021 and the second lower flange 2022.

By providing the first upper groove 501, the lubricating oil flowing out from the central hole of the crankshaft 1 enters the first upper groove 501, and since the first upper groove 501 extends along the axial direction of the upper flange 201, when the crankshaft 1 rotates, the outer circumferential surface of the long shaft 101 can be in contact with the first upper groove 501, that is, the lubricating oil in the first upper groove 501 can lubricate the outer circumferential surface of the long shaft 101, and the friction force between the long shaft 101 and the upper flange 201 is reduced. Similarly, the provision of the first lower groove also reduces friction between stub shaft 102 and lower flange 202.

Through setting up first upper groove 501 in the junction of first upper flange 2011 and second upper flange 2012, the effectual integrality of guaranteeing first upper flange 2011 and second upper flange 2012, first upper groove 501 has constituted the chamfer of the interior limit of the terminal surface that first upper flange 2011 and second upper flange 2012 are laminated each other, and this chamfer can get rid of sharp angle and the internal stress that processing formed, has improved the structural strength of upper flange 201. Similarly, the arrangement of the first lower grooves is the same as that of the first upper grooves 501.

Preferably, as shown in fig. 8-9, the lower end surface of the upper flange 201 is provided with a second upper groove 502 extending along the radial direction of the upper flange 201, the second upper groove 502 is disposed at the joint of the first upper flange 2011 and the second upper flange 2012, and the second upper groove 502 is communicated with the first upper groove 501; and/or, the upper end surface of the lower flange 202 is provided with a second lower groove extending along the radial direction of the lower flange 202, the second lower groove is arranged at the joint of the first lower flange 2021 and the second lower flange 2022, and the second lower groove is communicated with the first lower groove.

By providing the second upper groove 502, and making the second groove extend in the radial direction of the upper flange 201 and communicate with the first groove, the lubricating oil entering the first upper groove 501 enters the first lower groove by gravity and flows in the radial direction of the upper flange 201, which enables the lubricating oil to form an oil film between the upper end surface of the eccentric portion 103 of the crankshaft 1 and the lower end of the upper flange 201 when the crankshaft 1 rotates, reducing the friction force between the eccentric portion 103 and the upper end surface; by arranging the second upper groove 502 at the junction of the first upper flange 2011 and the second upper flange 2012, this makes the second upper groove 502 form a chamfer of the edges of the lower end faces of the first upper flange 2011 and the second upper flange 2012 that are close to each other, which in turn reduces the sharp corner stress, improves the structural strength of the first upper flange 2011 and the second upper flange 2012, and improves the service life. Similarly, the second lower groove and the second upper groove 502 are provided identically.

Embodiment two: as shown in fig. 12 to 17, the upper flange 201 includes an upper groove 503 provided on a lower end surface of the upper flange 201 and an upper rotating block 6 provided in the upper groove 503; the upper rotating block 6 comprises a first upper half block 601 and a second upper half block 602, and the first inner sphere 401 is arranged between the first upper half block 601 and the second upper half block 602;

and/or the number of the groups of groups,

the lower flange 202 comprises a lower groove arranged on the upper end surface of the lower flange 202 and a lower rotating block 6 arranged in the lower groove; the lower turning block 6 includes a first lower half block and a second lower half block, and the second inner spherical surface 402 is disposed between the first lower half block and the second lower half block.

The upper rotating block 6 is divided into a first upper half block 601 and a second upper half block 602, and the first outer spherical surface 301 is reported by the first upper half block 601 and the second upper half block 602 and then is arranged in the upper groove 503, so that the assembly of the long shaft 101 of the crankshaft 1 and the upper flange 201 is completed; compared with the upper flange 201 divided into the first upper flange 2011 and the second upper flange 2012, this embodiment does not need to integrally set the upper flange 201 as two parts, only needs to set the part of the physical structure of the upper flange 201 in contact with the first outer spherical surface 301 as a separate structure (i.e., the upper rotating block 6), then an upper groove 503 for accommodating the upper rotating block 6 is provided on the upper flange 201, and the whole upper flange 201 is still a complete structure, so that the structural strength and the machining precision of the upper flange 201 are ensured, the matching precision of the long shaft 101 of the crankshaft 1 and the upper flange 201 is ensured, and the rotating stability of the crankshaft 1 is improved.

Similarly, the cooperation of the lower rotating block 6 and the lower flange 202 has the same technical effect.

In addition, the cooperation of the upper flange 201 and the lower flange 202 makes the support of the crankshaft 1 in the length direction more stable, is favorable for improving the rotation stability of the crankshaft 1, and reduces the concentrated stress between the crankshaft 1 and the flange.

Preferably, as shown in fig. 16-17, when the first upper half block 601 and the second upper half block 602 are combined together to wrap the first outer spherical surface 301, a space 603 is formed between the first upper half block 601 and the second upper half block 602.

When the lubricating oil flowing out from the central hole of the crankshaft 1 flows through the interval 603, the lubricating oil can be stored in the interval 603, the crankshaft 1 rotates, and the lubricating oil in the interval 603 lubricates the first outer spherical surface 301, so that the rotation stability of the long shaft 101 is improved; in addition, because the friction generates heat when the crankshaft 1 rotates, the heat causes the upper rotating block 6 to expand, the space for the first upper half block 601 and the second upper half block 602 to expand is provided by the space 603, the extrusion force generated by the expansion of the first upper half block 601 and the second upper half block 602 on the first outer spherical surface 301 is avoided (reduced), the friction force between the upper rotating block 6 and the crankshaft 1 is further reduced, and the stability of the rotation of the crankshaft 1 is improved.

Preferably, the upper rotating block 6 can rotate around the axis of the inner hole of the upper flange 201 in the upper groove 503;

and/or the lower turning block 6 can be turned in the lower groove around the axis of the inner bore of the lower flange 202.

The upper rotating block 6 and the lower rotating block 6 are cylindrical, and the same upper groove 503 and lower groove are cylindrical concave cavities; when the crankshaft 1 rotates, three rotational states are included: the first, upper rotating block 6 and lower rotating block 6 are fixed, and the crankshaft 1 rotates relative to the upper rotating block 6 and lower rotating block 6; the second, upper rotating block 6 and lower rotating block 6 rotate together with the crankshaft 1; the third type of crankshaft 1 rotates relative to the upper rotating block 6 and the lower rotating block 6, and at the same time, the upper rotating block 6 and the lower rotating block 6 also rotate relative to the upper groove 503 and the lower groove. The pump body assembly can be assembled according to the specific application place of the pump body assembly; in the first state, since the upper rotating block 6 and the lower rotating block 6 are stationary relative to the upper groove 503 and the lower groove, it is advantageous to improve the rotation accuracy of the crankshaft 1, reduce the concentrated stress of the crankshaft 1 and the upper flange 201 and the lower flange 202, but wear faster. In the second state, the rotation of the crankshaft 1 drives the upper rotating block 6 and the lower rotating block 6 to rotate simultaneously, so that concentrated stress between the crankshaft 1 and the upper rotating block 6 and the lower rotating block 6 only occurs when the deflection of the crankshaft 1 changes, the service life of the pump body assembly is prolonged, the concentrated stress between the crankshaft 1 and the upper flange 201 and the lower flange 202 can be reduced, and the production is complex. In the third state, the concentrated stress between the crankshaft 1 and the upper and lower flanges 201, 202 is low, and the wear between the crankshaft 1 and the upper and lower rotating blocks 6, 6 is also slow, but the difficulty of production is high. Which mode is adopted specifically is according to actual needs.

An oil path for communicating the outer circumferential surface of the long shaft 101, the upper rotating block 6 and the inner surface of the groove can be provided, and when the crankshaft 1 rotates, the lubricating oil lubricates each friction pair.

Preferably, as shown in fig. 17, an upper bearing 7 is disposed in the upper groove 503, and the upper rotating block 6 is disposed inside the inner ring of the upper bearing 7;

and/or a lower bearing is arranged in the lower groove, and the lower rotating block 6 is arranged inside the inner ring of the lower bearing.

By arranging the upper bearing 7 and the lower bearing, the stability of the crankshaft 1 relative to the upper flange 201 and the lower flange 202 is improved, and the deflection change of the crankshaft 1 is smaller due to the fact that the crankshaft 1 rotates more stably, so that the concentrated stress between the crankshaft 1 and the upper flange 201 and the concentrated stress between the crankshaft and the lower flange 202 are reduced.

The invention provides a rotor compressor, which comprises the pump body assembly.

To verify the actual working effect of the present application, the actual parameters of the various structures of the compressor are as follows: the diameter of the long shaft 101 of the crankshaft 1 is 12.9mm, the contact part of the long shaft 101 and the upper flange 201 is in spherical structure contact, the spherical center of the convex spherical surface (the first outer spherical surface 301) on the long shaft 101 is on the central axis of the long shaft 101 of the crankshaft 1, the diameter of the convex spherical surface is 15.5mm, the corresponding contact part of the upper flange 201 and the convex spherical surface of the long shaft 101 is a concave spherical surface (the first inner spherical surface 401), the spherical center is on the central axis of a flange hole, the diameter of the concave spherical surface is 15.5mm, the diameter of the short shaft 102 of the crankshaft 1 is 10.9mm, the contact part of the short shaft 102 and the lower flange 202 is also in spherical structure contact, the spherical center of the convex spherical surface (the second outer spherical surface 302) on the short shaft 102 of the crankshaft 1 is on the central axis of the short shaft 102, the diameter of the convex spherical surface (the second inner spherical surface 402) is 13.5mm, and the spherical center is on the central axis of the flange hole.

As shown in fig. 21, the actual power consumption detection is performed on the compressor provided with the actual parameters, and the power consumption of the rotor compressor of the pump body assembly of the present application is compared with the power consumption comparison list of the compressor in the prior art (except for the pump body assembly, other structures are the same) under different operation frequencies; as is apparent from fig. 21, the compressor with the pump body assembly of the present application has an obvious effect of reducing power consumption, and since other structures of the compressor are all consistent, it can be judged that the contribution of the power consumption reduction is all generated by the difference of the pump body assemblies, which indicates that the pump body assembly of the present application has an obvious effect of reducing power consumption compared with the conventional scheme, and the power consumption reduction degree of the pump body assembly is increased along with the increase of the operating frequency according to the trend analysis of the power consumption reduction, which indicates that the scheme is more obvious and effective for the reduction of the power consumption and the friction power consumption under the high-frequency operation.

The invention also provides an air conditioner comprising the rotor compressor. The performance of the compressor is improved.

Those skilled in the art will readily appreciate that the advantageous features of the various aspects described above may be freely combined and stacked without conflict.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (11)

1. A pump body assembly comprising a crankshaft (1) and an upper flange (201) and a lower flange (202) for supporting the crankshaft (1), wherein the crankshaft (1) comprises a long shaft (101) and a short shaft (102), and is characterized in that a first outer spherical surface (301) protruding out of the outer circular surface of the long shaft (101) is arranged on the outer circular surface of the long shaft (101), the first outer spherical surface (301) comprises a first upper spherical surface (3011) and a first lower spherical surface (3012), the first outer spherical surface (301) is provided with a first big circle perpendicular to the axis of the crankshaft (1), and the first upper spherical surface (3011) and the first lower spherical surface (3012) are respectively arranged on the upper side and the lower side of the first big circle; the inner hole of the upper flange (201) comprises a first inner sphere (401) in spherical contact with the first outer sphere (301);

and/or the number of the groups of groups,

the outer circular surface of the short shaft (102) is provided with a second outer spherical surface (302) protruding out of the outer circular surface of the long shaft (101), the second outer spherical surface (302) comprises a second upper spherical surface (3021) and a second lower spherical surface (3022), the second outer spherical surface (302) is provided with a second big circle perpendicular to the axis of the crankshaft (1), and the second upper spherical surface (3021) and the second lower spherical surface (3022) are respectively arranged on the upper side and the lower side of the second big circle; the inner bore of the lower flange (202) includes a second inner sphere (402) in spherical contact with the second outer sphere (302).

2. Pump body assembly according to claim 1, wherein the diameter of the first outer sphere (301) is larger than the diameter of the long axis (101) and the diameter of the second outer sphere (302) is larger than the diameter of the short axis (102).

3. The pump body assembly of claim 2, wherein the upper flange (201) comprises a first upper flange (2011) and a second upper flange (2012) separated along a diameter of the upper flange (201); and/or the lower flange (202) comprises a first lower flange (2021) and a second lower flange (2022) separated along a diameter of the lower flange (202).

4. A pump body assembly according to claim 3, characterized in that the inner bore surface of the upper flange (201) is provided with a first upper groove (501) extending in the axial direction of the upper flange (201), the first upper groove (501) being provided at the junction of the first upper flange (2011) and the second upper flange (2012); and/or the inner hole surface of the lower flange (202) is provided with a first lower groove extending along the axial direction of the lower flange (202), and the first lower groove is arranged at the joint of the first lower flange (2021) and the second lower flange (2022).

5. Pump body assembly according to claim 4, characterized in that the lower end face of the upper flange (201) is provided with a second upper groove (502) extending in the radial direction of the upper flange (201), the second upper groove (502) being provided at the junction of the first upper flange (2011) and the second upper flange (2012), the second upper groove (502) and the first upper groove (501) communicating; and/or, the upper end surface of the lower flange (202) is provided with a second lower groove extending along the radial direction of the lower flange (202), the second lower groove is arranged at the joint of the first lower flange (2021) and the second lower flange (2022), and the second lower groove is communicated with the first lower groove.

6. Pump body assembly according to claim 2, characterized in that the upper flange (201) comprises an upper groove (503) provided on a lower end face of the upper flange (201) and an upper turning block (6) provided in the upper groove (503); the upper rotating block (6) comprises a first upper half block (601) and a second upper half block (602), and the first inner spherical surface (401) is arranged between the first upper half block (601) and the second upper half block (602);

and/or the number of the groups of groups,

the lower flange (202) comprises a lower groove arranged on the upper end surface of the lower flange (202) and a lower rotating block (6) arranged in the lower groove; the lower rotating block (6) comprises a first lower half block and a second lower half block, and the second inner spherical surface (402) is arranged between the first lower half block and the second lower half block.

7. The pump body assembly of claim 6, wherein when the first upper half (601) and the second upper half (602) are combined together to encapsulate the first outer sphere (301), a space (603) is formed between the first upper half (601) and the second upper half (602).

8. Pump body assembly according to claim 7, characterized in that the upper turning block (6) is rotatable within the upper groove (503) about the axis of the inner bore of the upper flange (201);

and/or the lower rotating block (6) can rotate around the axis of the inner hole of the lower flange (202) in the lower groove.

9. Pump body assembly according to claim 8, characterized in that an upper bearing (7) is arranged in the upper groove (503), the upper turning block (6) being arranged inside the inner ring of the upper bearing (7);

and/or a lower bearing is arranged in the lower groove, and the lower rotating block (6) is arranged inside the inner ring of the lower bearing.

10. A rotor compressor comprising a pump body assembly according to any one of claims 1 to 9.

11. An air conditioner comprising the rotor compressor of claim 10.