CN111287942B - Compressor - Google Patents

Abstract

The invention discloses a compressor, which comprises a support, an aligning piece, a bearing assembly and a crankshaft, wherein the support comprises a through hole, the support comprises a first matching part, and the first matching part extends along the circumferential direction of the central axis of the through hole. The aligning piece is the annular, and the aligning piece includes second cooperation portion, and second cooperation portion extends along the central axis's of aligning piece circumferential direction, and second cooperation portion is suitable for and contacts with the cooperation of first cooperation portion, and the second cooperation portion is movable for first cooperation portion. The bearing assembly and the aligning member are stacked in the axial direction of the aligning member. The crankshaft is arranged in the bearing assembly, the centering piece and the through hole in a penetrating mode, and the crankshaft is in contact with the bearing assembly. According to the compressor, the aligning piece is arranged and can move relative to the support, the surface of the support supporting the bearing assembly can be ensured to be vertical to the central axis of the crankshaft by adjusting the position of the aligning piece, and therefore the bearing assembly and the crankshaft can be ensured to run normally.

Description

Compressor

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a compressor.

Background

The compressor leads to assembling precision reduction between bent axle, bearing assembly and the support because the existence of support assembly error, and in compressor operation in-process, all produce wearing and tearing of different degree between bent axle and support, bent axle and bearing assembly, bearing assembly and the support, not only influence the normal use of compressor, still can shorten the life of compressor.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. The invention therefore proposes a compressor which has the advantages of long service life and low wear.

The compressor according to the embodiment of the present invention includes: a bracket including a through hole, the bracket including a first engagement portion extending in a circumferential direction of a central axis of the through hole; the centering piece is annular and comprises a second matching part, the second matching part extends along the circumferential direction of the central axis of the centering piece, the second matching part is suitable for being in matching contact with the first matching part, and the second matching part is movable relative to the first matching part; a bearing assembly disposed in a stack with the aligning member in an axial direction of the aligning member; a crankshaft that is inserted through the bearing assembly, the aligning member, and the through hole, and that is in contact with the bearing assembly.

According to the compressor provided by the embodiment of the invention, the aligning piece is arranged and can move relative to the bracket, and the surface of the bracket for supporting the bearing assembly can be ensured to be vertical to the central axis of the crankshaft by adjusting the position of the aligning piece, so that the bearing assembly and the crankshaft can be ensured to normally run, the service performance of the crankshaft and the bearing assembly can be further improved, and the service life of the crankshaft and the bearing assembly can be prolonged.

According to some embodiments of the invention, one of the first fitting part and the second fitting part is a spherical surface and the other is a tapered surface.

According to some embodiments of the invention, the stent comprises: the first matching part is arranged on the body part; the installation portion, the body portion, the aligning member and a part of the bearing assembly are all sleeved on the installation portion, and the through hole is formed in the installation portion.

In some embodiments of the invention, the body portion comprises: the mounting part is arranged on the connecting part in a penetrating way; the supporting part, the supporting part with connecting portion connect, the supporting part be annular and overcoat in the installation department, first cooperation portion is located the supporting part, the aligning piece range upon range of set up in the supporting part.

In some embodiments of the invention, the self-aligning member includes a first surface and a second surface, the first surface being planar and in contact with the bearing assembly, the second surface being spherical, and the second surface being configured to form the second mating portion.

In some embodiments of the invention, the distance between the first surface and the second surface gradually decreases in a direction from a radially inner side to a radially outer side of the aligning member.

In some embodiments of the invention, the bearing assembly comprises: the first bearing cover is stacked on the aligning member and sleeved on the mounting part; a second bearing cover disposed in a stack with the first bearing cover and spaced apart from each other; a rolling member interposed between the first bearing cover and the second bearing cover; the crankshaft penetrates through the second bearing cover, the rolling piece and the first bearing cover.

In some embodiments of the invention, the rolling member comprises a plurality of rolling balls, each of the rolling balls being adapted to roll between the first bearing cap and the second bearing cap.

According to some embodiments of the invention, the crankshaft comprises: a main body portion that is disposed through the bracket, the bearing assembly, and the centering member; the stop part is sleeved outside the main body part, and the stop part is arranged on the bearing component in a stacked mode.

In some embodiments of the invention, the body portion is a hollow piece.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a sectional view of a compressor according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a structural schematic view of a bracket of a compressor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a center adjusting member of the compressor according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a bearing assembly of a compressor according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a crankshaft of the compressor according to the embodiment of the present invention;

fig. 7 is a schematic view of a mechanism of a compressor in the related art.

Reference numerals:

the compressor (1) is provided with a compressor,

a bracket 10, a through hole 100, a first fitting part 101, a body part 11, a connecting part 111, a supporting part 112, a mounting hole 113, a mounting part 12,

the aligning member 20, the second fitting portion 200, the first surface 21, the second surface 22,

the bearing assembly 30, the first bearing cap 31, the second bearing cap 32, the rolling elements 33, the ball 330,

a crankshaft 40, a main body portion 41, a stopper portion 42, a spherical center a;

the compressor 1' is provided with a compressor casing,

bracket 10 ', body portion 11 ', connecting portion 111 ', supporting portion 112 ', mounting portion 12 ',

bearing assembly 30 ', first bearing cap 31 ', second bearing cap 32 ', rolling elements 33 ', ball 330 ',

crankshaft 40 ', center a'.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1, a compressor 1 according to an embodiment of the present invention includes a bracket 10, a centering member 20, a bearing assembly 30, and a crankshaft 40.

As shown in fig. 1 to 3, the stent 10 includes a through hole 100, and the stent 10 includes a first engagement portion 101, the first engagement portion 101 extending in a circumferential direction of a central axis of the through hole 100. For example, the first fitting portion 101 may be annular and extend in the circumferential direction of the central axis of the through hole 100. As shown in fig. 1 and 4, the center adjusting piece 20 has a ring shape, and the center adjusting piece 20 includes a second engaging portion 200, and the second engaging portion 200 extends in a circumferential direction of a central axis of the center adjusting piece 20. The second mating portion 200 is adapted to be in mating contact with the first mating portion 101, and the second mating portion 200 is movable relative to the first mating portion 101. It is understood that the first mating portion 101 and the second mating portion 200 can contact each other, and the first mating portion 101 and the second mating portion 200 can be mated with each other and have adjustable relative positions. For example, the second mating portion 200 is stacked on the first mating portion 101.

As shown in fig. 1, the bearing assembly 30 and the center adjusting member 20 are stacked in the axial direction of the center adjusting member 20. The crankshaft 40 is inserted through the bearing assembly 30, the centering member 20, and the through hole 100. It is understood that the bearing assembly 30 is externally sleeved on the crankshaft 40, the aligning member 20 is externally sleeved on the crankshaft 40, the crankshaft 40 is arranged through the through hole 100, and the crankshaft 40 is in contact with the bearing assembly 30. For example, a portion of crankshaft 40 may be in contact with a side of bearing assembly 30 remote from centerpiece 20, and bearing assembly 30 may be used to support crankshaft 40.

In the related art, as shown in fig. 7, the bearing assembly 30 'is directly stacked above the support portion 112'. Ideally, the upper surface of the support portion 112 ' is parallel to the upper end surface of the mounting portion 12 ', and after the bearing assembly 30 ', the bracket 10 ' and the crankshaft 40 ' are assembled, the upper surface of the support portion 112 ' is perpendicular to the central axis of the crankshaft 40 ', and the crankshaft 40 ' and the bearing assembly 30 ' can normally operate. However, since the mounting portion 12 ' is rotatable about the center of the sphere a ', the center of the sphere defined by the outer wall surface of the mounting portion 12 ' is the center of the sphere. When the mounting portion 12 'is formed with an assembly error or the mounting portion 12' is offset, i.e., the mounting portion 12 'is rotated along the center a', the central axis of the mounting portion 12 'is not perpendicular to the upper surface of the supporting portion 112'.

The upper surface of the supporting portion 112 'is not perpendicular to the central axis of the crankshaft 40', the pressure of the crankshaft 40 'against the second bearing cap 32' is unbalanced, which causes the second bearing cap 32 'to be not parallel to the first bearing cap 31', a part of the rolling balls 330 'is not in contact with the second bearing cap 32', which causes the upper end surface of the mounting portion 12 'to be in contact with the second bearing cap 32', the second bearing cap 32 'may be worn during the long-term operation of the compressor 1', and the outer wall surface of the crankshaft 40 'is also worn with the bracket 10', which causes the crankshaft 40 'to fail to operate normally, which affects the service life of the compressor 1'.

According to the compressor 1 of the embodiment of the invention, the aligning member 20 is arranged and the aligning member 20 is movable relative to the bracket 10, and the surface of the bracket 10 for supporting the bearing assembly 30 can be ensured to be vertical to the central axis of the crankshaft 40 by adjusting the position of the aligning member 20, so that the bearing assembly 30 and the crankshaft 40 can be ensured to normally operate, the service performance of the crankshaft 40 and the bearing assembly 30 can be improved, and the service life of the crankshaft 40 and the bearing assembly 30 can be prolonged.

According to some embodiments of the present invention, one of the second fitting part 200 and the first fitting part 101 may be a groove, and the other may be a protrusion. For example, a portion of the surface of the bracket 10 facing the aligning member 20 may be recessed to form a groove, a portion of the aligning member 20 opposite to the groove may be protruded toward the inside of the groove to be engaged with the groove, a wall surface of the groove may be configured to form the first engaging portion 101, a surface of the protrusion of the aligning member 20 may be configured to form the second engaging portion 200, the second engaging portion 200 is in contact with the first engaging portion 101 and the second engaging portion 200 may be moved on the first engaging portion 101.

As shown in fig. 2, according to some embodiments of the present invention, one of the first fitting part 101 and the second fitting part 200 is a spherical surface, and the other is a tapered surface. It should be noted that the term "spherical surface" as used herein is understood to mean a portion of the outer surface of a sphere, for example, the "spherical surface" may be a ring-shaped surface formed by two spaced and parallel cross-sectional planes taken through the outer surface of a sphere. Therefore, after the first matching part 101 and the second matching part 200 are assembled, the contact point between the first matching part 101 and the second matching part 200 is configured to form a circle, the center of the circle moves towards the central axis of the crankshaft 40, so that the self-aligning member 20 can be ensured to automatically adjust the position during the operation of the compressor 1, the surface of the bracket 10 supporting the bearing assembly 30 can be kept vertical to the central axis of the crankshaft 40, and the bearing assembly 30 and the crankshaft 40 are in a balanced state.

As shown in fig. 1 and 3, according to some embodiments of the present invention, the bracket 10 may include a body portion 11 and a mounting portion 12, and the first mating portion 101 is disposed on the body portion 11, in other words, the body portion 11 includes the first mating portion 101. The main body 11, the aligning member 20, and a part of the bearing assembly 30 are all fitted around the mounting portion 12, and the through hole 100 is provided in the mounting portion 12. For example, the body 11 may be provided with a mounting hole 113, the mounting portion 12 may be inserted into the mounting hole 113, and the outer peripheral wall of the mounting portion 12 may be connected (e.g., riveted) to the wall surface of the mounting hole 113. A portion of the mounting portion 12 extends out of the mounting hole 113, and the self-aligning member 20 and a portion of the bearing assembly 30 can be sleeved on the portion of the mounting portion 12. Therefore, the aligning member 20 and the bearing assembly 30 can be sleeved on the mounting portion 12, and the mounting portion 12 can limit the movement of the aligning member 20 and the bearing assembly 30, so that the mounting of the aligning member 20 and the bearing assembly 30 can be simplified.

As shown in fig. 1 and 3, in some embodiments of the invention, the body portion 11 includes a connecting portion 111 and a supporting portion 112, the mounting portion 12 is disposed through the connecting portion 111, the supporting portion 112 is connected to the connecting portion 111, the supporting portion 112 is annular and is externally sleeved on the mounting portion 12, the first matching portion 101 is disposed on the supporting portion 112, and the aligning member 20 is stacked on the supporting portion 112. Accordingly, the production and manufacture of the stent 10 can be simplified, and the support portion 112 can be assembled with the connection portion 111 by separately producing the support portion 112, so that the configuration of the first fitting portion 101 can be simplified, and the production efficiency of the stent 10 can be improved.

As shown in fig. 4, in some embodiments of the present invention, the center-adjusting member 20 may include a first surface 21 and a second surface 22, the first surface 21 is a plane and contacts the bearing assembly 30, the second surface 22 is a spherical surface, and the second surface 22 is configured to form the second fitting portion 200. Thereby, the aligning member 20 can stably support the bearing assembly 30 and also facilitate the assembly of the first fitting portion 101 and the second fitting portion 200.

As shown in fig. 4, in some embodiments of the present invention, the distance between the first surface 21 and the second surface 22 gradually decreases in a direction from the radially inner side to the radially outer side of the center adjusting member 20.

As shown in fig. 1 and 5, in some embodiments of the present invention, the bearing assembly 30 includes a first bearing cover 31, a second bearing cover 32 and a rolling element 33, the first bearing cover 31 is stacked on the aligning member 20, the first bearing cover 31 is sleeved on the mounting portion 12, the second bearing cover 32 is stacked on the first bearing cover 31 and spaced apart from the first bearing cover 31, the rolling element 33 is sandwiched between the first bearing cover 31 and the second bearing cover 32, and the crankshaft 40 is inserted through the second bearing cover 32, the rolling element 33 and the first bearing cover 31.

For example, the center piece 20 may be stacked above the supporting portion 112, the second engaging portion 200 configured by the lower surface of the center piece 20 may be assembled with the first engaging portion 101 configured by the upper surface of the supporting portion 112, and the center piece 20 may be movable relative to the supporting portion 112. The first bearing cover 31 is stacked above the aligning member 20, the first bearing cover 31 can be supported by the upper surface of the aligning member 20, and the first bearing cover 31 can be kept relatively stationary with respect to the aligning member 20. The rolling member 33 is stacked above the first bearing cover 31, the second bearing cover 32 may be stacked above the rolling member 33, and the second bearing cover 32 may perform a relative movement with the first bearing cover 31 via the rolling member 33. A part of the crankshaft 40 is disposed above the second bearing, and another part of the crankshaft 40 is inserted into the second bearing cover 32, the rolling members 33, the first bearing cover 31, the aligning member 20, and the bracket 10.

It is to be understood that the terms "upper," "lower," "inner," "outer," "axial," "radial," "circumferential," and the like are used in an illustrative and descriptive sense only and not for purposes of limitation, as the terms "upper," "lower," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the exemplary embodiments of the present invention to facilitate the description of the invention and to simplify the description.

In addition, unless expressly stated or limited otherwise, the first feature may be "on" or "under" the second feature in direct contact with the first or second feature, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 5, in some embodiments of the present invention, the rolling member 33 comprises a plurality of rolling balls 330, each rolling ball 330 being adapted to roll between the first bearing cap 31 and the second bearing cap 32. The term "plurality" as used herein is to be understood in two or more instances. Thus, the first bearing cover 31 may be spaced apart from the second bearing cover 32 by the rolling of the plurality of rolling balls 330 to achieve relative movement between the first bearing cover 31 and the second bearing cover 32 with less friction. Further, the plurality of rolling balls 330 may be arranged at intervals along the circumferential direction of the crankshaft 40.

As shown in fig. 6, according to some embodiments of the present invention, the crankshaft 40 includes a main body portion 41 and a stopping portion 42, and the main body portion 41 is inserted through the bracket 10, the bearing assembly 30 and the center adjusting member 20. The stopper 42 is externally fitted to the body 41, and the stopper 42 is stacked on the bearing assembly 30. Thereby, the crankshaft 40 can be indirectly positioned on the bracket 10 through the stopper portion 42.

As shown in fig. 1 and 6, in some embodiments of the present invention, the main body portion 41 may be a hollow member. As such, the mass of crankshaft 40 may be reduced to facilitate driving crankshaft 40 in motion.

A compressor 1 according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 6. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.

As shown in fig. 1, a compressor 1 according to an embodiment of the present invention includes a casing, a bracket 10, a centering member 20, a bearing assembly 30, and a crankshaft 40. The carrier 10, bearing assembly 30 and crankshaft 40 are all located within the housing.

Specifically, as shown in fig. 1 and 3, the bracket 10 includes a connection portion 111, a support portion 112, and a mounting portion 12, the connection portion 111 is connected to an inner wall surface of the housing, the connection portion 111 has a mounting hole 113 penetrating therethrough in a thickness direction thereof, and a cross section of the mounting hole 113 is circular. The lower end of the mounting portion 12 extends into the mounting hole 113 and is connected (e.g., riveted) to the mounting hole 113, the mounting portion 12 is movable relative to the mounting hole 113, and the upper end of the mounting portion 12 is located outside the mounting hole 113. The mounting portion 12 is cut with a cutting surface parallel to the central axis of the crankshaft 40, the contour line of the cutting surface at the lower end of the mounting portion 12 includes two arc line segments, and the two arc line segments are arranged at left and right intervals and are protruded toward directions away from each other. For example, the outer wall surface of the mounting portion 12 located in the mounting hole 113 may be formed as a spherical surface.

As shown in fig. 1, the support portion 112 is located above the connecting portion 111, the support portion 112 is connected (e.g., welded) to the connecting portion 111, and the support portion 112 is annular and extends in a circumferential direction of a central axis of the mounting hole 113. The support portion 112 is externally fitted to the mounting portion 12, and an inner wall surface of the support portion 112 is spaced apart from an outer wall surface of the mounting portion 12.

As shown in fig. 1, 2, and 4, the center adjusting member 20 is stacked above the supporting portion 112, the center adjusting member 20 is annularly fitted around the mounting portion 12, and the inner peripheral wall of the center adjusting member 20 is spaced apart from the outer wall surface of the mounting portion 12. The surface of the centering member 20 contacting the supporting portion 112 is a spherical surface, and the surface of the supporting portion 112 contacting the centering member 20 is a conical surface. In the upward direction shown in fig. 1, the circumference of the contour line of the cross section of the tapered surface gradually decreases, and the circumference of the contour line of the cross section of the spherical surface gradually decreases. The point configuration of contact of the centering members 20 with the support portion 112 forms a circle.

As shown in fig. 1 and 5, the bearing assembly 30 includes a first bearing cover 31, a second bearing cover 32, and rolling members 33, the first bearing cover 31 is stacked above the aligning member 20, the first bearing cover 31 forms an annular flat plate member, and a surface of the aligning member 20 contacting the first bearing cover 31 is a flat surface. The first bearing cover 31 is externally fitted to the mounting portion 12, and an inner wall surface of the first bearing cover 31 is spaced apart from an outer wall surface of the mounting portion 12.

As shown in fig. 5, the rolling member 33 is stacked above the first bearing cover 31, and the rolling member 33 is annular and externally fitted to the mounting portion 12. The rolling member 33 includes a plurality of rolling balls 330, and the plurality of rolling balls 330 are arranged at regular intervals along the circumferential direction of the mounting portion 12. Each of the rolling balls 330 may be in contact with the first bearing cap 31 and may roll on the first bearing cap 31. The second bearing cover 32 is stacked above the rolling members 33, and the second bearing cover 32 forms an annular flat plate member. Each ball 330 may be in contact with the second bearing cap 32 and movable relative to the second bearing cap 32. The second bearing cover 32 is located above the mounting portion 12. The ball 330 may space the mounting portion 12 from the second bearing cap 32.

As shown in fig. 1 and 6, the crankshaft 40 includes a main body portion 41 and a stopper portion 42, the main body portion 41 is a hollow straight rod, and the main body portion 41 is inserted into the bearing assembly 30 and the mounting portion 12. The stopper 42 is provided on the outer peripheral wall of the body 41, and the stopper 42 is stacked above the second bearing cover 32. Crankshaft 40 is stationary relative to second bearing cap 32. The crankshaft 40 is rotatable relative to the mounting portion 12.

In the related art, the bearing assembly 30 'is directly stacked above the support portion 112'. Ideally, the upper surface of the support portion 112 ' is parallel to the upper end surface of the mounting portion 12 ', and after the bearing assembly 30 ', the bracket 10 ' and the crankshaft 40 ' are assembled, the upper surface of the support portion 112 ' is perpendicular to the central axis of the crankshaft 40 ', and the crankshaft 40 ' and the bearing assembly 30 ' can normally operate. However, since the mounting portion 12 ' is rotatable about the center of the sphere a ', the center of the sphere defined by the outer wall surface of the mounting portion 12 ' is the center of the sphere. When the mounting portion 12 'is formed with an assembly error or the mounting portion 12' is offset, i.e., the mounting portion 12 'is rotated along the center a', the central axis of the mounting portion 12 'is not perpendicular to the upper surface of the supporting portion 112'.

The upper surface of the supporting portion 112 ' forms an included angle α with the upper end surface of the mounting portion 12 ', so that the second bearing cap 32 ' contacts with the upper end surface of the mounting portion 12 ' after being mounted and cannot be completely attached to the rolling ball 330 ', an included angle β is formed between the second bearing cap 32 ' and the upper end surface of the mounting portion 12 ', and the included angle between the second bearing cap 32 ' and the central axis of the crankshaft 40 ' is 90 ° - β. In the long-term operation of the compressor 1 ', the second bearing cover 32' is worn, and the outer wall surface of the crankshaft 40 'is also worn with the bracket 10', so that the crankshaft 40 'cannot work normally, and the service life of the compressor 1' is affected.

The compressor 1 of the embodiment of the invention is additionally provided with the centering piece 20, when the mounting part 12 rotates along the spherical center a, the position of the centering piece 20 can be adjusted, so that the spherical surface of the centering piece 20 swings along the conical surface of the supporting part 112 until the first surface 21 of the centering piece 20 is parallel to the end surface of the mounting part 12, thereby avoiding the eccentric wear phenomenon existing in the related art, and further avoiding the phenomenon that the local severe wear of the crankshaft 40 generates foreign matters and even is stuck due to the eccentric wear. It should be noted that the above-mentioned "spherical surface" may be understood as a part of the outer surface of the sphere, for example, the "spherical surface" may be a ring-shaped surface formed by two spaced and parallel cross sections taken through the outer surface of the sphere.

It should be noted that "stacked" may be understood as at least a portion of a first feature being opposite a second feature in a top-to-bottom direction, e.g., the first feature being directly or diagonally above the second feature. Further, the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature, or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A compressor, comprising:

a bracket including a through hole, the bracket including a first engagement portion extending in a circumferential direction of a central axis of the through hole;

the centering piece is annular and comprises a second matching part, the second matching part extends along the circumferential direction of the central axis of the centering piece, the second matching part is suitable for being in matching contact with the first matching part and is movable relative to the first matching part, one of the first matching part and the second matching part is a spherical surface, the other one of the first matching part and the second matching part is a conical surface, and a contact point structure between the first matching part and the second matching part forms a circle;

a bearing assembly disposed in a stack with the aligning member in an axial direction of the aligning member;

a crankshaft that is inserted through the bearing assembly, the centering member, and the through hole, and that is in contact with the bearing assembly, the center of the circle moving toward the central axis of the crankshaft.

2. The compressor of claim 1, wherein the bracket comprises:

the first matching part is arranged on the body part;

the installation portion, the body portion, the aligning member and a part of the bearing assembly are all sleeved on the installation portion, and the through hole is formed in the installation portion.

3. The compressor of claim 2, wherein the body portion comprises:

the mounting part is arranged on the connecting part in a penetrating way;

the supporting part, the supporting part with connecting portion connect, the supporting part be annular and overcoat in the installation department, first cooperation portion is located the supporting part, the aligning piece range upon range of set up in the supporting part.

4. The compressor of claim 3, wherein the aligning member includes a first surface and a second surface, the first surface being planar and in contact with the bearing assembly, the second surface being spherical, and the second surface being configured to form the second mating portion.

5. The compressor of claim 4, wherein a distance between the first surface and the second surface gradually decreases in a direction from a radially inner side to a radially outer side of the centering member.

6. The compressor of claim 2, wherein the bearing assembly comprises:

the first bearing cover is stacked on the aligning member and sleeved on the mounting part;

a second bearing cover disposed in a stack with the first bearing cover and spaced apart from each other;

a rolling member interposed between the first bearing cover and the second bearing cover;

the crankshaft penetrates through the second bearing cover, the rolling piece and the first bearing cover.

7. The compressor of claim 6, wherein the rolling member comprises a plurality of rolling balls, each of the rolling balls being adapted to roll between the first bearing cap and the second bearing cap.

8. The compressor of claim 1, wherein the crankshaft comprises:

a main body portion that is disposed through the bracket, the bearing assembly, and the centering member;

the stop part is sleeved outside the main body part, and the stop part is arranged on the bearing component in a stacked mode.

9. The compressor of claim 8, wherein the main body portion is a hollow member.

Images