Compressors and air conditioners

Abstract

The present invention provides a compressor and an air conditioner. The compressor 200 includes a housing 10, a first rotating shaft 20 attached to the housing 10, a connection assembly 30 sleeved on the first rotating shaft 20, and a first rotor assembly 40 having a first rotor 41 and a second rotor 42 coaxially disposed on the connection assembly 30, the connection assembly 30 supporting the first rotor 41 and the second rotor 42 for co-rotation around the first rotating shaft 20, the connection assembly 30 configured to restrict the relative position of the first rotor 41 and the second rotor 42 such that a gap exists between the first rotor 41 and the second rotor 42. The present disclosure can maintain the gap between the first rotor 41 and the second rotor without increasing the number of parts of the compressor.

Description

[Technical Field]

[0001] This disclosure claims priority from Chinese Application No. 202110219948.6, filed on February 26, 2021, the disclosure of which is incorporated herein in its entirety.

[0002] The present disclosure relates to the field of compressor technology, and more particularly to compressors and air conditioners. [Background technology]

[0003] Typically, a pair of parallel helical rotors are arranged within the compressor, and together with the inner wall of the housing, they form a spatial volume. This volume periodically expands and contracts during the operation of the helical rotors. Through rational design, this volume periodically communicates with and closes off from the intake and exhaust ports, thereby completing the entire process of intake, compression, and exhaust. Currently, dual compressors are widely used in refrigeration and air conditioning equipment with a medium cooling capacity.

[0004] In the operation process of the helical rotor, the difference in gas pressure between the intake port and the exhaust port causes the helical rotor to generate an axial force, which causes the helical rotor to move along its axial direction within the housing, causing the adjacent end faces of the two helical rotors arranged opposite to each other to collide with each other. In related art, an additional thrust bearing is usually provided between the two helical rotors to prevent the adjacent end faces of the two helical rotors from colliding with each other, but the additional thrust bearing increases the number of parts of the compressor, resulting in an increase in the size of the compressor. Summary of the Invention

[0005] The present invention provides a compressor and an air conditioner that can maintain a gap between a first rotor and a second rotor without increasing the number of parts in the compressor.

[0006] The present disclosure provides: Housing and a first rotatable shaft attached to the housing; a connection assembly sleeved onto the first rotatable shaft; a first rotor assembly having a first rotor and a second rotor coaxially disposed on a connection assembly, the connection assembly supporting the first rotor and the second rotor for co-rotation about a first rotatable shaft; and the connection assembly is configured to limit a relative position of the first rotor and the second rotor such that a gap exists between the first rotor and the second rotor; A compressor is provided.

[0007] In an optional embodiment of the present disclosure, a first axial gap exists between an end face of the first rotor away from the second rotor and an end face of the housing near the first rotor, and a second axial gap exists between an end face of the second rotor away from the first rotor and an end face of the housing near the second rotor, and the connection assembly is configured to limit the gap between the first rotor and the second rotor to be greater than the first axial gap and the gap between the first rotor and the second rotor to be greater than the second axial gap.

[0008] In an optional embodiment of the present disclosure, the compressor comprises: a second rotatable shaft attached to the housing; a second rotor assembly having a third rotor and a fourth rotor coaxially disposed on a second rotatable shaft, the second rotatable shaft being configured to drive the second rotor assembly to rotate along a direction opposite to a direction of rotation of the first rotor assembly, the third rotor and the first rotor being engaged with each other, and the fourth rotor and the second rotor being engaged with each other; It further has:

[0009] In an optional embodiment of the present disclosure, an end face of the third rotor near the fourth rotor protrudes from an end face of the first rotor near the second rotor, and an end face of the fourth rotor near the third rotor protrudes from an end face of the second rotor near the first rotor, thereby preventing the first rotor from interfering with the fourth rotor and preventing the second rotor from interfering with the third rotor.

[0010] In an optional embodiment of the present disclosure, adjacent end faces of the third rotor and the fourth rotor are joined.

[0011] In an optional embodiment of the present disclosure, an end face of the third rotor proximate the fourth rotor has a distance d1 in the axial direction of the second rotatable shaft from an end face of the first rotor proximate the second rotor, and an end face of the fourth rotor proximate the third rotor has a distance d2 in the axial direction of the second rotatable shaft from an end face of the second rotor proximate the first rotor, and the second rotor assembly is configured such that d2=d1.

[0012] In an optional embodiment of the present disclosure, the gap between the first rotor and the second rotor is L3, the axial movement of the third rotor within the housing along the axial direction of the second rotatable shaft toward the fourth rotor is D1, the axial movement of the second rotor within the housing toward the first rotor is D2, the axial movement of the fourth rotor within the housing along the axial direction of the second rotatable shaft toward the third rotor is D3, the axial movement of the first rotor within the housing toward the second rotor is D4, and the second rotor assembly is configured to satisfy L3 ≧ D1 + D2 and L3 ≧ D3 + D4.

[0013] In an optional embodiment of the present disclosure, intake ports are formed adjacent to the first rotor, the second rotor, the third rotor, and the fourth rotor, a first exhaust port is formed adjacent to the first rotor, the third rotor, and the housing, and a second exhaust port is formed adjacent to the second rotor, the fourth rotor, and the housing.

[0014] In an optional embodiment of the present disclosure, the first rotor has a helical direction opposite to the helical direction of the second rotor, and the third rotor has a helical direction opposite to the helical direction of the fourth rotor.

[0015] In an optional embodiment of the present disclosure, the third rotor is integrally formed with the second rotatable shaft, and the fourth rotor has a shaft hole that mates with the second rotatable shaft, and the shaft hole is tightly fitted with the second rotatable shaft.

[0016] In an optional embodiment of the present disclosure, the compressor further includes a thrust bearing disposed on one side of the second rotatable shaft and a motor disposed on the other side of the second rotatable shaft, the motor configured to rotationally drive the second rotatable shaft, such that the second rotor assembly follows the rotation of the second rotatable shaft and drives the first rotor assembly and the connecting assembly to rotate together around the first rotatable shaft.

[0017] In an optional embodiment of the present disclosure, an end face of the third rotor away from the fourth rotor is flush with an end face of the first rotor away from the second rotor in a direction perpendicular to the axial direction of the second rotating shaft, and an end face of the fourth rotor away from the third rotor is flush with an end face of the second rotor away from the first rotor in a direction perpendicular to the axial direction of the second rotating shaft.

[0018] In an optional embodiment of the present disclosure, the connection assembly includes a first restriction. Materials and a second limiting member, both of which are sleeved onto the first rotating shaft and both of which are rotatable about the first rotating shaft, the first limiting member being configured to limit the position of an end face of the first rotor that is closer to the second rotor, and the second limiting member being configured to limit the position of an end face of the second rotor that is closer to the first rotor.

[0019] In an optional embodiment of the present disclosure, an end face of the first rotor closer to the second rotor is provided with a first limiting groove along the axial direction of the first rotating shaft, the first limiting member having a first body portion and a first limiting portion, the first body portion being sleeved onto the first rotating shaft, the first limiting portion being disposed around the periphery of the outer surface of the first body portion, and the first limiting portion being pressed into the first limiting slot, the end face of the second rotor closer to the first rotor is provided with a second limiting groove along the axial direction of the first rotating shaft, the second limiting member having a second body portion and a second limiting portion, the second body portion being sleeved onto the first rotating shaft and disposed adjacent to the first body portion, the second limiting portion being disposed around the periphery of the outer surface of the second body portion, and the second limiting portion being pressed into the second limiting slot.

[0020] In an optional embodiment of the present disclosure, an end face of the first restriction portion closer to the second restriction portion protrudes on the side of an end face of the first rotor closer to the second rotor, and an end face of the second restriction portion closer to the first restriction portion protrudes on the side of an end face of the second rotor closer to the first rotor.

[0021] In an optional embodiment of the present disclosure, the distance in the axial direction of the first rotatable shaft between an end face of the first rotor proximate the second rotor and an end face of the second rotor proximate the first rotor gradually increases from the axis of the first rotor assembly toward the outer periphery of the first rotor assembly.

[0022] In an optional example of the present disclosure, the first restricting member has a first body portion and a first restricting portion, the first body portion is sleeve-disposed on the first rotating shaft, the first restricting portion is disposed around the periphery of the outer surface of the first body portion, and a side of the first restricting portion facing away from the second rotor abuts an end face of the first rotor facing closer to the second rotor; the second restricting member has a second body portion and a second restricting portion, the second body portion is sleeve-disposed on the first rotating shaft and disposed adjacent to the first body portion, and the second restricting portion is disposed around the periphery of the outer surface of the second body portion, and a side of the second restricting portion facing away from the first rotor abuts an end face of the second rotor facing closer to the first rotor.

[0023] In an optional embodiment of the present disclosure, the connection assembly further includes a third limiting member and a fourth limiting member, wherein the third limiting member is configured to limit the distance between an end face of the first rotor remote from the second rotor and the housing, and the fourth limiting member is configured to limit the distance between an end face of the second rotor remote from the first rotor and the housing.

[0024] In an optional example of the present disclosure, the third restricting member has a third body portion and a third restricting portion, the third body portion is sleeved onto the first rotatable shaft and positioned adjacent to the first body portion, the third restricting portion is positioned around the periphery of an outer surface of the third body portion, and the third restricting portion abuts against an end face of the first rotor remote from the second rotor; and the fourth restricting member has a fourth body portion and a fourth restricting portion, the fourth body portion is sleeved onto the first rotatable shaft and positioned adjacent to the second body portion, the fourth restricting portion is positioned around the periphery of an outer surface of the fourth body portion, and the fourth restricting portion abuts against an end face of the second rotor remote from the first rotor.

[0025] In an optional embodiment of the present disclosure, an end face of the first rotor remote from the second rotor is provided with a third limiting groove along the axial direction of the first rotating shaft, the third limiting member having a third body portion and a third limiting portion, the third body portion being sleeved on the first rotating shaft and positioned adjacent to the first body portion, the third limiting portion being positioned around the periphery of the outer surface of the third body portion, and the third limiting portion being pressed into the third limiting slot, and the end face of the second rotor remote from the first rotor is provided with a fourth limiting groove along the axial direction of the first rotating shaft, the fourth limiting member having a fourth body portion and a fourth limiting portion, the fourth body portion being sleeved on the first rotating shaft and positioned adjacent to the second body portion, the fourth limiting portion being positioned around the periphery of the outer surface of the fourth body portion, and the fourth limiting portion being pressed into the fourth limiting slot.

[0026] In an optional embodiment of the present disclosure, the material of the connection assembly comprises a tin bronze material.

[0027] In an optional embodiment of the present disclosure, the first rotating shaft and the connection assembly are each provided with an oil supply passage, and the oil supply passage located on the first rotating shaft is in communication with the oil supply passage located on the connection assembly.

[0028] An embodiment of the present disclosure also provides an air conditioner having the aforementioned compressor.

[0029] In an embodiment of the present disclosure, an improvement to a connection assembly connecting a first rotating shaft and a first rotor assembly enables the connection assembly to limit the relative position between the first rotor and the second rotor and to maintain a gap between the first rotor and the second rotor without the addition of any additional components, thereby preventing adjacent end faces of the first rotor and the second rotor from colliding with each other.

[0030] In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings necessary for describing the embodiments are briefly introduced below. Obviously, the accompanying drawings in the following description are only a part of the embodiments of the present disclosure. Those skilled in the art can also obtain other drawings according to these drawings without creative efforts. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a cross-sectional view of a compressor provided by one embodiment of the present application. [Figure 2] FIG. 2 is a partial structural view of the first rotating shaft, the first rotor assembly, and the connection assembly in the compressor shown in FIG. 1. [Figure 3] FIG. 3 is an enlarged structural view of part A in the first rotating shaft, first rotor assembly, and connection assembly shown in FIG. 2. [Figure 4]FIG. 3 is an enlarged structural view of part B of the first rotating shaft, the first rotor assembly, and the connection assembly shown in FIG. 2. [Figure 5] FIG. 3 is an enlarged structural view of part C of the first rotating shaft, the first rotor assembly, and the connection assembly shown in FIG. 2. [Figure 6] 2 is a structural diagram of a first restricting member in the compressor shown in FIG. 1. FIG. [Figure 7] 7 is a cross-sectional view of the first limiting member shown in FIG. 6 taken along the PP direction. FIG. [Figure 8] FIG. 2 is a three-dimensional structural view of the first rotating shaft, the second rotating shaft, the first rotor assembly, and the second rotor assembly in the compressor shown in FIG. [Figure 9] FIG. 3 is a second structural diagram of the first rotating shaft, first rotor assembly, and connection assembly shown in FIG. 2. [Figure 10] FIG. 2 is a structural diagram of a first rotary shaft in the compressor shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0032] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part, not all, of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, any other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present disclosure.

[0033] References herein to an "example" or "embodiment" mean that a particular feature, structure, or characteristic described in connection with the example or embodiment may be included in at least one of the examples of the present disclosure. The presence of this phrase in various places in the specification does not necessarily refer to the same example, nor does it refer to separate or alternative examples that are mutually exclusive of other examples. As will be appreciated by those skilled in the art, examples described herein can be combined with other examples, either explicitly or implicitly.

[0034] The present disclosure provides a compressor. Referring to FIG. 1, FIG. 1 is a first partial cross-sectional view of a compressor provided by an embodiment of the present application. The compressor 200 shown in FIG. 1 may be a screw compressor, for example, an opposed-screw compressor. It should be noted that the compressor 200 shown in FIG. 1 is not limited to a screw compressor, and may be, for example, a scroll compressor. The compressor 200 may include a housing 10, a first rotatable shaft 20, a connection assembly 30, and a first rotor assembly 40. The housing 10 may be used to house the first rotatable shaft 20, the connection assembly 30, and a portion of the first rotor assembly 40. The first rotatable shaft 20 may be mounted within the housing 10, for example, the first rotatable shaft 20 may be screwed into the housing 10, and both ends of the first rotatable shaft 20 may be exposed to the outside of the housing 10.

[0035] It should be noted that the terms "first," "second," etc. in the specification, claims, and the above-mentioned accompanying drawings of this disclosure are used to distinguish between different objects, and are not used to describe a particular order. Furthermore, the terms "comprises" and "having," and variations thereof, are intended to cover a non-exclusive inclusion.

[0036] As shown in FIG. 1 , the connection assembly 30 may be sleeved onto the first rotating shaft 20. The first rotor assembly 40 may include a first rotor 41 and a second rotor 42, which are coaxially disposed on the connection assembly 30. The connection assembly 30 may include a first rotor 41 and a second rotor 42. 41 and the second rotor 42 for rotation together about the first rotatable shaft 20 and is configured to limit the relative position between the first rotor 41 and the second rotor 42 so that a gap exists between the first rotor 41 and the second rotor 42. The connecting assembly may be a plain bearing or a rolling bearing.

[0037] In the related art, an additional spacer disposed between the two rotors of the first rotor assembly 40 is generally used to separate the two rotors and maintain a gap between the two rotors during rotation, but the spacer requires additional components, thereby increasing the number of components in the compressor 200. However, one embodiment of the present disclosure directly improves the connection assembly 30 connecting the first rotating shaft 20 and the first rotor assembly 40, so that the connection assembly 30 can limit the relative position between the first rotor 41 and the second rotor 42 and achieve the maintenance of the gap between the first rotor 41 and the second rotor 42 without any additional components, thereby preventing the adjacent end faces of the first rotor 41 and the second rotor 42 from colliding with each other. 2 to 5, Fig. 2 is a structural diagram of the first rotating shaft, first rotor assembly, and connection assembly in the compressor shown in Fig. 1, Fig. 3 is an enlarged structural diagram of part A of the first rotating shaft, first rotor assembly, and connection assembly shown in Fig. 2, Fig. 4 is an enlarged structural diagram of part B of the first rotating shaft, first rotor assembly, and connection assembly shown in Fig. 2, and Fig. 5 is an enlarged structural diagram of part C of the first rotating shaft, first rotor assembly, and connection assembly shown in Fig. 2. The first rotor 41 may include a first end face 411 and a second end face 412 arranged back to back, the first end face 411 being the end face of the first rotor 41 close to the second rotor 42, and the second end face 412 being the end face of the first rotor 41 away from the second rotor 42. The second rotor 42 may include a third end face 421 and a fourth end face 422 arranged back to back, the third end face 421 being 1 the end face of the second rotor 42 close to the rotor 41, and the fourth end face 422 is the 1 rotor 41 Away from 2 rotor 42 This is the end face of the

[0038] The first end face 411 is disposed adjacent to the third end face 421 and is spaced apart from the third end face 421, the second end face 412 is disposed adjacent to one side face of the housing 10 and is spaced apart from the one side face of the housing 10, and the fourth end face 422 is disposed opposite to the other side face of the housing 10 and is spaced apart from the other side face of the housing 10. A first axial gap L1 exists between the second end face 412 of the first rotor 41 and the end face of the housing 10 closer to the first rotor 41. 422 and an end face of the housing 10 closer to the second rotor 42. The connection assembly 30 is configured to limit the relative positions of the first rotor 41 and the second rotor 42 such that a third axial gap L3 exists between the first end face 411 of the first rotor 41 and the third end face 421 of the second rotor 42.

[0039] In one embodiment of the present disclosure, when the first rotor 41 moves along the axial direction of the first rotating shaft 20 toward the end face of the housing 10 adjacent to the first rotor 41, the third axial gap L3 is larger than the first axial gap L1, thereby 412 It can be seen that even when the first rotor 41 abuts against the end face of the housing 10 adjacent to the first rotor 41, the first end face 411 of the first rotor 41 and the third end face 421 of the second rotor 42 do not abut against each other, i.e., a gap still exists between the first rotor 41 and the second rotor 42.

[0040] When the second rotor 42 moves along the axial direction of the first rotary shaft 20 toward the end face of the housing 10 adjacent to the second rotor 42, the third axial gap L3 is larger than the second axial gap L2, and thus the fourth end face of the second rotor 42 422 Even if the second rotor 42 abuts against the end face of the housing 10 adjacent to the first rotor 42, 1 The first end surface 411 of the first rotor 41 and the third end surface 421 of the second rotor 42 do not abut against each other, that is, a gap still exists between the first rotor 41 and the second rotor 42.

[0041] 2 and 4, the connection assembly 30 may typically include a first limiting member 31 and a second limiting member 32, both of which are sleeved onto the first rotatable shaft 20 and rotatable about the first rotatable shaft. The first rotor 41 is sleeved onto the first limiting member 31 and fixedly connected to the first limiting member 31 such that the first rotor 41 can rotate together with the first limiting member 31 about the first rotatable shaft 20, following the first limiting member 31, and the first limiting member 31 is configured to limit the distance that an end face of the first rotor 41 closest to the second rotor 42 moves toward the second rotor 42. The second rotor 42 is arranged on the second limiting member 32 and is connected and fixed to the second limiting member 32 so that the second rotor 42 can follow the second limiting member 32 and rotate together around the first rotating shaft 20, and the second limiting member 32 is configured to limit the distance that the end face of the second rotor 42 closest to the first rotor 41 moves in a direction closer to the first rotor 41.

[0042] The first limiting member 31 is configured to limit the position of the first end face 411 of the first rotor 41, and the second limiting member 32 is configured to limit the position of the first end face 411 of the second rotor 42. 3 End face of 421 It can be seen that the first limiting member 31 and the second limiting member 32 cooperate to limit the position of the rotor 41, such that a third axial gap L3 exists between the first end face 411 of the first rotor 41 and the third end face 421 of the second rotor 42.

[0043] 2, 4, 5, 6, and 7, FIG. 6 is a structural diagram of the first restricting member in the compressor shown in FIG. 1, and FIG. 7 is a cross-sectional view of the first restricting member shown in FIG. 6 along the PP direction. The first restricting member 31 includes a first main body portion 311 and a first restricting portion 312. The first main body portion 311 is sleeve-disposed on the first rotating shaft 20. For example, the first main body portion 311 may be provided with a first shaft hole 313, and the first restricting member 31 is sleeve-disposed on the first rotating shaft 20 through the first shaft hole 313. The first main body portion 311 may have a circular structure, and the first restricting portion 312 is disposed around the outer periphery of the outer surface of the first main body portion 311. A first limiting groove 413 is provided on the first end face 411 of the first rotor 41, and a notch of the first limiting groove 413 faces the second rotor 42, or the first end face 411 is provided with this first limiting groove 413 along the axial direction of the first rotating shaft 20. The first limiting portion 312 is pressed into the first limiting groove 413 so that the first limiting portion 312 can limit the first rotor 41 through the first limiting groove 413.

[0044] The first limiting portion 312 is arranged protruding from the outer periphery of the outer surface of the first main body portion 311, and when the first rotor 41 is sleeve-positioned on the first limiting member 31, the groove wall of the first limiting groove 413 of the first rotor 41 abuts against the first limiting portion 312, and the first end face 411 of the first rotor 41 cannot move relative to the first limiting member 31 under the restriction of the first limiting portion 312 of the first limiting member 31, thereby realizing the restricting effect of the first limiting member 31 on the first end face 411 of the first rotor 41.

[0045] The structure of the second limiting member 32 may be the same as the structure of the first limiting member 31. For example, the second limiting member 32 may include a second main body portion 321 and a second limiting portion 322. The second main body portion 321 is sleeve-disposed on the first rotating shaft 20. For example, the second main body portion 321 may be provided with a second shaft hole 323, and the second limiting member 32 is sleeve-disposed on the first rotating shaft 20 through the second shaft hole 323. The second main body portion 321 may have a circular structure, and the second limiting portion 322 is disposed around the outer periphery of the outer surface of the second main body portion 321. A second limiting groove 423 may be provided on a third end face 421 of the second rotor 42, with a notch of the second limiting groove 423 facing the first rotor 41, or the third end face 421 may be provided with the second limiting groove 423 along the axial direction of the first rotating shaft 20. The second limiting portion 322 is connected to the first limiting groove 423 through the second limiting groove 423. 2 The rotor 42 is pressed into the second limiting groove 423 so as to be able to limit the rotor 42 .

[0046] The second limiting portion 322 is disposed on the outer periphery of the outer surface of the second main body portion 321 so as to protrude therefrom. When the second rotor 42 is sleeve-mounted on the second limiting member 32, the groove wall of the second limiting groove 423 of the second rotor 42 abuts against the second limiting portion 322, and the second rotor 42 3 The end surface 421 cannot move relative to the second limiting member 32 under the restriction of the second limiting portion 322 of the second limiting member 32. 2 It can be seen that the limiting effect of the second limiting member 32 on the third end face 421 of the rotor 42 is realized.

[0047] In one embodiment of the present disclosure, the position of the first end surface 411 of the first rotor 41 is limited by the first limiting member 31, and the position of the third end surface 421 of the second rotor 42 is limited by the second limiting member 32, thereby restricting the first rotor 41 The first end surface 411 of the second rotor 42 A third axial gap is maintained between the third end face 421 of the shaft 410 and the third end face 421 of the shaft 410 .

[0048] 3 and 8, Fig. 8 is a three-dimensional structural view of the first rotating shaft, the second rotating shaft, the first rotor assembly, and the second rotor assembly in the compressor shown in Fig. 1, in which the first rotor 41 includes a first body portion 414 and a plurality of first helical blades 415, which are arranged around the outer surface of the first body portion 414. A first end surface 411 of the first rotor 41 includes a first portion located on the first body portion 414 and a second portion located on one side of the first helical blades 415 closer to the second rotor 42, and a first limiting groove 413 is formed in the first portion. It can be seen that a plurality of first helical blades 415 are successively arranged on the first body part 414 in a direction from a first end face 411 on the first body part 414 toward a second end face 412, and the end faces of the first helical blades 415 and the end face of the first body part 414 close to the second rotor 42 are combined together to form the first end face 411. A first limiting groove 413 is formed in the end face of the first body part 414.

[0049] The second rotor 42 includes a second body portion 424 and a plurality of second helical blades 425, the plurality of second helical blades 425 being arranged around the periphery of the outer surface of the second body portion 424. The third end surface 421 of the second rotor 42 includes a third portion located in the second body portion 424 and a third portion located in the first rotor 41 and a fourth portion located on one side of the second helical blade 425 closest to the third end surface 421, and a second limiting groove 423 is formed in the third portion. The plurality of second helical blades 425 are successively arranged on the second body portion 424 in a direction from the third end surface 421 to the fourth end surface 422 on the second body portion 424, and 2 Spiral Blade 425 End face of and the first rotor 41 It can be seen that the end surface of the second body portion 424 closest to the first end surface 421 is combined with the end surface of the second body portion 424 closest to the first end surface 421 to form the third end surface 421. The second limiting groove 423 is formed in the end surface of the second body portion 424.

[0050] In one embodiment of the present disclosure, the first restriction 312 may have a first side 3121 and a second side 3122 arranged back to back, where the first side 3121 is the side of the first restriction 312 closer to the second restriction 322, and the second side 3122 is the side of the first restriction 312 farther from the second restriction 322. The second restriction 322 may have a third side 3221 and a fourth side 3222 arranged back to back, where the third side 3221 is the side of the second restriction 322 closer to the first restriction 312, and the fourth side 3222 is the side of the second restriction 322 farther from the first restriction 312.

[0051] The first side surface 3121 is disposed so as to protrude from the first end surface 411 side of the first rotor 41, and the third side surface 3221 is disposed so as to protrude from the third end surface 421 side of the second rotor 42. When the first rotor 41 and the second rotor 42 move in a direction approaching each other until the first limiting member 31 and the second limiting member 32 abut against each other, a part of the first limiting member 31 protrudes from the end surface of the first rotor 41, and a part of the second limiting member 32 protrudes from the end surface of the second rotor 42. 2 rotor 42 No. 3 End face of 421 are spaced apart from each other, which can have the effect of having a third axial gap L3 between the first rotor 41 and the second rotor 42, and the first portion, second portion, third portion, and fourth portion together form the third axial gap L3 therebetween.

[0052] It should be noted that the positional relationship between the first limiting member 31 and the first rotor 41 and the positional relationship between the second limiting member 32 and the second rotor 42 are not limited to this. In some other embodiments, the first side surface 3121 is flush with the end face of the remaining part of the first part, excluding the part where the first limiting groove 413 is provided, in a direction perpendicular to the axial direction of the first rotating shaft 20. The third side surface 3221 is flush with the end face of the remaining part of the third part, excluding the part where the second limiting groove 423 is provided, in a direction perpendicular to the axial direction of the first rotating shaft 20.

[0053] The other part of the first part, excluding the part where the first limiting groove 413 is provided, abuts the other part of the third part, excluding the part where the second limiting groove 423 is provided, and further, the second part and the fourth part are spaced apart from each other so as to form a third axial gap L3 between the second part and the fourth part.

[0054] The first limiting portion 312 of the first limiting member 31 and the second limiting member 32 When the first limiting member 31 and the first rotor 41, and the second limiting member 32 and the second rotor 42 move together in a direction approaching each other until the first limiting groove 413 and the second limiting portion 322 come into contact with each other, the end face of the other part of the first part excluding the part where the first limiting groove 413 is provided becomes flush with the first side surface 3121 of the first limiting portion 312 in the direction perpendicular to the axial direction of the first rotating shaft 20, and the end face of the other part of the third part excluding the part where the second limiting groove 423 is provided becomes flush with the second side surface 3121 of the first limiting portion 312 in the direction perpendicular to the axial direction of the first rotating shaft 20. Restriction section322 is flush with the third side surface 3221 of the first portion 3122, so that the end surface of the remaining portion of the first part excluding the portion where the first limiting groove 413 is provided abuts against the end surface of the remaining portion of the third part excluding the portion where the second limiting groove 423 is provided. In comparison, the first side surface 3121 is arranged to protrude from the side of the remaining portion of the first part excluding the portion where the first limiting groove 413 is provided, and the third side surface 3221 is arranged to protrude from the side of the remaining portion of the third part excluding the portion where the second limiting groove 423 is provided, and the embodiment of the present disclosure can reduce the internal space of the housing 10 occupied by the connection assembly 30.

[0055] It can also be seen that if the lengths of the various components of the first rotor assembly 40 are fixed, when the first limiting member 31 and the first rotor 41, and the second limiting member 32 and the second rotor 42 move together in a direction toward each other until the first limiting portion 312 of the first limiting member 31 and the second limiting portion 322 of the second limiting member 32 abut each other, the overall length of the first rotor assembly 40 will be greater if there is a larger gap between the end face of the other part of the first part of the first rotor 41 excluding the part where the first limiting groove 413 is provided, and the end face of the other part of the third part of the second rotor 42 excluding the part where the second limiting groove 423 is provided, and thereby the first rotor assembly 40 will occupy a larger volume of the interior space of the housing 10.

[0056] In one embodiment of the present disclosure, the end face of the first part other than the part where the first limiting groove 413 is provided is arranged so as to be flush with the first side surface 3121 of the first limiting portion 312 in a direction perpendicular to the axial direction of the first rotating shaft 20, and the end face of the third part other than the part where the second limiting groove 423 is provided is arranged so as to be flush with the first side surface 3121 of the first limiting portion 312 in a direction perpendicular to the axial direction of the first rotating shaft 20. 1 The first limiting portion 322 is disposed so as to be flush with the third side surface 3221 of the second limiting portion 322 in a direction perpendicular to the axial direction of the rotary shaft 20. Restriction section The first side 3121 of 312 is the second Restriction section322, so that the overall length of the first rotor assembly 40 is reduced to the maximum extent, thereby reducing the internal space of the housing 10 occupied by the first rotor assembly 40.

[0057] Furthermore, the end faces of the first body portion 414 and the second body portion 424 abut against each other, and the end faces of the first spiral blades 415 and the second spiral blades 425 are spaced apart from each other, forming a third axial gap L3 between the second portion and the fourth portion. Compared to when the entire end faces of the first rotor 41 and the second rotor 42 are spaced apart from each other, the embodiment of the present disclosure not only prevents mutual interference between the first spiral blades 415 of the first rotor 41 and the second spiral blades 425 of the second rotor 42, but also shortens the length of the first rotor assembly 40 within the housing 10 due to the setting of the third axial gap L3.

[0058] In some other embodiments, as shown in Figure 9, Figure 9 is a second structural view of the first rotating shaft, first rotor assembly, and connection assembly shown in Figure 2. The first rotor 41 does not have the first limiting groove 413, and the second rotor 42 does not have the second limiting groove 423. Alternatively, the first end surface 411 of the first rotor 41 directly abuts against the side surface of the first limiting portion 312 away from the second rotor 42, and the third end surface 421 of the second rotor 42 directly abuts against the side surface of the second limiting portion 322 away from the first rotor 41, thereby forming a third axial gap L3 between the first rotor 41 and the second rotor 42. In one embodiment of the present disclosure, when the first restricting member 31 and the second restricting member 32 abut against each other, due to the blocking of the first restricting portion 312 of the first restricting member 31 and the second restricting portion 322 of the second restricting member 32, it can be seen that the first end face 411 of the first rotor 41 does not abut against the third end face 421 of the second rotor 42, or there is always a gap between the first end face 411 of the first rotor 41 and the third end face 421 of the second rotor 42.

[0059] In another embodiment, the first rotor 41 has a limiting groove. (i.e. limited slots) It should be noted that the first rotor 41 may be clamped by the first restricting member 31 through a restricting slot, and the third end surface 421 of the second rotor 42 may directly abut the second restricting portion 322 of the second restricting member 32. Alternatively, the second rotor 42 may be provided with a restricting slot, and the second rotor 42 may be clamped by the second restricting member 32 through the restricting slot, and the first end surface 411 of the first rotor 41 may directly abut the first restricting portion 312 of the first restricting member 31.

[0060] In one embodiment of the present disclosure, the first restricting member 31 and the second restricting member 32 are formed separately into two components, while in other embodiments, the first restricting member 31 and the second restricting member 32 may be integrally formed into one component.

[0061] In one embodiment of the present application, the connection assembly 30, the first rotor 41, and the second rotor 42 can rotate together around the first rotating shaft 20 within the housing 10. During the rotation process, an axial force along the axial direction of the first rotating shaft 20 is generated due to a difference in pressure between both sides of the first rotor 41 and both sides of the second rotor 42. Under the action of this axial force, the first rotor 41 and the second rotor 42 may move in the axial direction of the first rotating shaft 20. At this time, if the axial movement of the first rotor 41 and the second rotor 42 is too large, it may result in an interference problem between the first rotor 41 and the second rotor 42.

[0062] Based on this, an embodiment of the present disclosure starts from a practical problem, in which the first rotor 41 and the second rotor 42 are limited by the connection assembly 30, so that the gap between the first rotor 41 and the second rotor 42 is greater than the axial movement of the first rotor assembly 40 (including the first rotor 41 and the second rotor 42) along the axial direction of the first rotating shaft, thereby avoiding the occurrence of the above problem.

[0063] In one embodiment of the present application, the third axial gap L3 is set to be larger than the first axial gap L1 and larger than the second axial gap L2, i.e., L3 > L1, and L3 is larger than L2. Here, the first axial gap L1 is a gap between the second end face 412 of the first rotor 41 and an end face of the housing 10 adjacent to the first rotor 41 in the axial direction of the first rotating shaft 20, and the second axial gap L2 is a gap between the fourth end face 422 of the second rotor 42 and an end face of the housing 10 adjacent to the second rotor 42 in the axial direction of the first rotating shaft 20. Further referring to Figures 2, 4 and 5, the connection assembly 30 of one embodiment of the present disclosure may further include a third limiting member 33 and a fourth limiting member 34, where the third limiting member 33 is configured to limit the distance between the second end face 412 of the first rotor 41 and the housing 10 so that a first axial gap L1 exists between the second end face 412 of the first rotor 41 and the housing 10, and the fourth limiting member 34 is configured to limit the distance between the fourth end face 422 of the second rotor 42 and the housing 10 so that a second axial gap L2 exists between the fourth end face 422 of the second rotor 42 and the housing 10.

[0064] The third restricting member 33 may include a third body portion 331 and a third restricting portion 332, the third body portion 331 being sleeve-disposed on the first rotating shaft 20 and disposed adjacent to the first body portion 311, and the third restricting portion 332 being disposed around the outer periphery of the outer surface of the third body portion 331. 332 The fifth aspect 3321 and the sixth aspect 3322 and a fifth aspect 3321 is a third restriction away from the housing 10 332 The sixth aspect 3322 is a third restriction portion close to the housing 10 332 The fifth aspect 3321The fourth limiting member 34 includes a fourth body portion 341 and a fourth limiting portion 342. The fourth body portion 341 is sleeve-disposed on the first rotating shaft 20 and is disposed adjacent to the second body portion 321. The fourth limiting portion 342 is 4 The fourth limiting portion is disposed around the outer periphery of the outer surface of the main body portion 341. 342 The fourth limiting portion 3422 may have a seventh side 3421 and an eighth side 3422, the seventh side 3421 being a fourth limiting portion 3422 that is away from the housing 10. 342 The eighth side 3422 is the fourth limiting portion near the housing 10. 342 The fourth limiting part is 342 is the 2 rotor 42 No. 4 End face of 422 and abuts against it.

[0065] 6, the third limiting member 33 and the fourth limiting member 34 may both have the same structure as the first limiting member 31. In addition, the second end surface 412 of the first rotor 41 and the fourth end surface 422 of the second rotor 42 may each be provided with a limiting slot, and may be fastened to the third limiting member 33 and the fourth limiting member 34, respectively, through the limiting slot.

[0066] As shown in FIG. 4, the second end surface of the first rotor 41 412 The second end surface may be provided with a third limiting groove 416, and the notch of the third limiting groove 416 faces the housing 10 or 412 The third limiting groove 416 is provided in the first rotary shaft 20 along the axial direction of the first rotary shaft 20. 332 is the third restriction 332is pressed into the third limiting groove 416 so as to limit the second end surface 412 of the first rotor 41 through the third limiting groove 416. The third limiting portion 332 is arranged to protrude on the outer periphery of the outer surface of the third main body portion 331, and the first rotor 41 is sleeve-disposed on both the first limiting member 31 and the third limiting member 33, the first limiting member 31 is used to limit the first end surface 411 of the first rotor 41, and the third limiting member 33 is used to limit the first rotor 41. 41 When the first rotor 41 is sleeved onto the third limiting member 33, the groove wall of the third limiting groove 416 of the first rotor 41 contacts the third limiting portion 33. 332 and the first rotor 41 2 The end surface 412 of the third limiting member 33 332 The first rotor 41 cannot move relative to the third limiting member 33 under the restriction of the second end surface 412 of the first rotor 41, thereby realizing the limiting effect of the third limiting member 33 on the second end surface 412 of the first rotor 41.

[0067] As shown in FIG. 5, a fourth limiting groove 426 may be provided on the fourth end face 422 of the second rotor 42, and the notch of the fourth limiting groove 426 may face the housing 10, or the fourth end face 422 may be provided with the fourth limiting groove 426 along the axial direction of the first rotating shaft 20. Restriction section 342 The fourth limiting groove 426 is inserted into the fourth rotor 42 of the second rotor 42. End face 422 The fourth limiting groove 426 is pressed into the fourth limiting groove 426 so as to limit the

[0068] The fourth limiting portion 342 is disposed so as to protrude along the outer periphery of the outer surface of the fourth main body portion 341, and the second rotor 42 is disposed on the second limiting member 32 and the fourth limiting member 34It can be seen that the second limiting member 32 is used to limit the third end surface 421 of the second rotor 42, and the fourth limiting member 34 is used to limit the fourth end surface 422 of the second rotor 42. When the second rotor 42 is sleeved onto the fourth limiting member 34, the groove wall of the fourth limiting groove 426 of the second rotor 42 abuts against the fourth limiting portion 342, and the fourth end surface 422 of the second rotor 42 cannot move relative to the fourth limiting member 34 under the restriction of the fourth limiting portion 342 of the fourth limiting member 34, thereby realizing the limiting effect of the fourth limiting member 34 on the fourth end surface 422 of the second rotor 42.

[0069] In one embodiment of the present disclosure, the position of the second end face 412 of the first rotor 41 is restricted by the third restricting member 33 so that a first axial gap L1 exists between the second end face 412 of the first rotor 41 and the housing 10, and the position of the fourth end face 422 of the second rotor 42 is restricted by the fourth restricting member 34 so that a second axial gap L2 exists between the fourth end face 422 of the second rotor 42 and the housing 10.

[0070] Because the connection assembly 30 rotates synchronously with the first rotor assembly 40, shaft friction with the first rotor assembly 40 may occur during operation, potentially resulting in wear of the connection assembly 30. To this end, in an embodiment of the present disclosure, the connection assembly 30 may include a tin bronze material, i.e., the connection assembly 30 may be formed from a tin bronze material, which has tin as a major alloying element and generally has a tin content of 3% to 14%. This material has corrosion and wear resistance properties and superior mechanical and process properties, which may improve the wear resistance of the connection assembly 30.

[0071] In one embodiment of the present disclosure, in order to avoid excessively high friction temperatures when the connection assembly 30 and the first rotor assembly 40 generate shaft friction, the embodiment of the present disclosure may further provide oil supply passages in both the first rotating shaft 20 and the connection assembly 30 to reduce friction between the connection assembly 30 and the first rotor assembly 40 and ensure reliable operation of the compressor 200, and cooling oil or other oil is supplied to the lubricating and cooling oil supply passages via an oil supply component located outside the housing 10.

[0072] Typically, in relation to Figures 2 and 10, Figure 10 is a structural diagram of the first rotating shaft in the compressor shown in Figure 1. The connection assembly 30 is provided with a plurality of first oil supply passages 35. One restrictor member has one or more first oil supply passages. 35 may be provided (for example, a first oil supply passage 35 is provided in each of the first restricting member 31, the second restricting member 32, the third restricting member 33, and the fourth restricting member 34). A main oil supply passage 211 is provided in the first rotating shaft 20 along the axial direction of the first rotating shaft 20, and a plurality of auxiliary oil supply passages 212 communicating with the main oil supply passage 211 are formed in a second direction perpendicular to the axial direction of the first rotating shaft 20. The main oil supply passage 211 and the plurality of auxiliary oil supply passages 212 together form a second oil supply passage 21, and the second oil supply passage 21 is connected to the plurality of auxiliary oil supply passages 212. aisle 212 and communicates with the plurality of first oil supply passages 35. During operation, refrigerated oil or other oil can be supplied to the main oil supply passage 211 of the first rotating shaft 20 through an oil supply component located within the housing 10, and the main oil supply passage 211 allows refrigerated oil or other oil to flow between the first rotating shaft 20 and the connection assembly 30 through the plurality of auxiliary oil supply passages 212 to lubricate and cool the contact surfaces of the first rotating shaft 20 and the connection assembly 30. The refrigerated oil or other oil flows through the plurality of first oil supply passages 35 and into the connection assembly 30. 30 and the first rotor assembly 40 and the connection assembly 30 and the first rotor assembly 40 may be lubricated or cooled.

[0073] 1 and 8 , the compressor 200 according to an embodiment of the present disclosure may further include a second rotatable shaft 50 and a second rotor assembly 60, where the second rotatable shaft 50 is mounted within the housing 10 and is disposed parallel to the first rotatable shaft 20 in the axial direction of the second rotatable shaft 50. The second rotor assembly 60 may include a third rotor 61 and a fourth rotor 62 coaxially disposed on the second rotatable shaft 50. The second rotatable shaft 50 is configured to drive the second rotor assembly 60 to rotate in a direction opposite to the rotational direction of the first rotor assembly 40, where the third rotor 61 is engaged with the first rotor 41 and the fourth rotor 62 is engaged with the second rotor 42.

[0074] First rotor assembly 40 It can be seen that the first rotor assembly 40 can be a negative rotor assembly, the second rotor assembly 60 can be a positive rotor assembly, the second rotor assembly 60 as a positive rotor assembly can be an active rotor assembly, and the first rotor assembly 40 as a negative rotor assembly can be a slave rotor assembly. As an example, the second rotatable shaft 50 can be connected in a transmission manner to a drive assembly such as a motor, and the first rotor assembly 40 can be a slave rotor assembly. 2 The rotating shaft 50 is driven to rotate by a drive assembly. 2 As the rotating shaft 50 rotates, it drives the second rotor assembly 60 to rotate therewith, and as the second rotor assembly 60 rotates, it drives the first rotor assembly 40 to rotate about the first rotating shaft 20.

[0075] During rotation of the first rotor assembly 40 and the second rotor assembly 60, the first rotor assembly 40 and the second rotor assembly 60 undergo axial movement under the action of axial force. If they move and the two rotors of the first rotor assembly 40 and the two rotors of the second rotor assembly 60 are engaged out of position, the two rotors of the first rotor assembly 40 and the two rotors of the second rotor assembly 60 may interfere with each other, resulting in scraping or squeezing of the four rotors.

[0076] Based on this, in one embodiment of the present disclosure, the end face of the third rotor 61 close to the fourth rotor 62 protrudes from the end face of the first rotor 41 close to the second rotor 42, and the end face of the fourth rotor 62 close to the third rotor 61 protrudes from the end face of the second rotor 42 close to the first rotor 41. In the embodiment of the present disclosure, the first rotor 41 does not interfere with the fourth rotor 62, and the second rotor 42 This can prevent interference with the third rotor 61.

[0077] The third rotor 61 may have a fifth end face 611 and a sixth end face 612 arranged back to back, the fifth end face 611 being the side closer to the fourth rotor 62 and the sixth end face 612 being the side away from the fourth rotor 62, and it can be seen that the fifth end face 611 of the third rotor 61 is higher than the first end face 411 of the first rotor 41 in the axial direction of the second rotating shaft 50, thereby allowing a portion of the third rotor 61 to always be positioned within the gap between the first rotor 41 and the second rotor 42. The fourth rotor 62 may have a seventh end face 621 and an eighth end face 622 arranged back to back, the seventh end face 621 being a side closer to the third rotor 61 and the eighth end face 622 being a side farther from the third rotor 61, and the seventh end face 621 of the fourth rotor 62 being higher than the third end face 421 of the second rotor 42 in the axial direction of the second rotating shaft 50, thereby allowing a portion of the fourth rotor 62 to always be positioned within the gap between the first rotor 41 and the second rotor 42. The portion of the third rotor 61 arranged on the first rotor 41 and the second rotor 42 (i.e., the portion above the first end face 411 of the first rotor 41) can limit the seventh end face 621 of the fourth rotor 62 so that a gap always exists between the seventh end face 621 of the fourth rotor 62 and the first end face 411 of the first rotor 41 without mutual interference. At the same time, a part of the fourth rotor 62 arranged on the first rotor 41 and the second rotor 42 (i.e., a part above the third end surface 421 of the second rotor 42) is arranged so that a gap always exists between the fifth end surface 611 of the third rotor 61 and the third end surface 421 of the second rotor 42 without mutual interference. 61 The fifth end face 611 can be limited.

[0078] In one embodiment of the present disclosure, the first rotor assembly 40 is restricted by the connection assembly 30 so that a third axial gap L3 is maintained between the first rotor 41 and the second rotor 42 of the first rotor assembly 40, and the adjacent end faces of both the third rotor 61 and the fourth rotor 62 of the second rotor assembly 60 in the embodiment of the present disclosure are higher than the adjacent end faces of the first rotor 41 and the second rotor 42, respectively, thereby preventing the two pairs of rotors arranged in diagonal positions in the first rotor assembly 40 and the second rotor assembly 60 from interfering with each other to avoid scraping or squeezing of the rotors.

[0079] As shown in FIG. 8 , the fifth end face 611 of the third rotor 61 is joined to the seventh end face 621 of the fourth rotor 62, i.e., the adjacent end faces of the third rotor 61 and the fourth rotor 62, and compared to disposing the third rotor 61 and the fourth rotor 62 spaced apart from each other, the embodiment of the present disclosure can shorten the overall length of the second rotor assembly 60, thereby reducing the internal space of the housing 10 occupied by the second rotor assembly 60.

[0080] Of course, in some other embodiments, the third rotor 61 and the fourth rotor 62 can be positioned at a distance from each other, which has the effect of preventing the two pairs of rotors positioned diagonally from interfering with each other, and also ensures that the adjacent end faces of the third rotor 61 and the fourth rotor 62 are both positioned within the gap between the first rotor 41 and the second rotor 42.

[0081] 3 , in one embodiment of the present disclosure, the fifth end face 611 of the third rotor 61 has a distance d1 from the first end face 411 of the first rotor 41 in the axial direction of the second rotating shaft 50, where d1 may be 0.2 mm, 0.3 mm, 0.4 mm, or other small value. The distance between the seventh end face 621 of the fourth rotor 62 and the third end face 421 of the second rotor 42 in the axial direction of the second rotating shaft 50 is d2, where d2 may be 0.2 mm, 0.3 mm, 0.4 mm, or other small value. Here, d1 = d2, and d1 + d2 = L3, i.e., the distance between the fifth end face 611 of the third rotor 61 and the first end face 411 of the first rotor 41 in the axial direction of the second rotating shaft 50 is equal to the distance between the seventh end face 621 of the fourth rotor 62 and the third end face 421 of the second rotor 42 in the axial direction of the second rotating shaft 50, and the sum of these two distances is equal to the third axial gap L3 between the first rotor 41 and the second rotor 42.

[0082] In actual operation of the compressor 200, the second rotatable shaft 50 and the second rotor assembly 60 move in the axial direction of the second rotatable shaft 50 under the influence of an axial force applied thereto.

[0083] When the third rotor 61 and the fourth rotor 62 move, the axial movement amount by which the third rotor 61 moves in the housing 10 along the axial direction of the second rotating shaft 50 toward the direction closer to the fourth rotor 62 is D1, the axial movement amount by which the second rotor 42 moves in the direction closer to the first rotor 41 is D2, the axial movement amount by which the fourth rotor 62 moves in the housing 10 along the axial direction of the second rotating shaft 50 toward the direction closer to the third rotor 61 is D3, the axial movement amount by which the first rotor 41 moves in the direction closer to the second rotor 42 is D4, and the fifth end surface 611 of the third rotor 61 is in contact with the third end surface 612 of the second rotor 42. 421and the seventh end face 621 of the fourth rotor 62 does not interfere with the first end face 411 of the first rotor 41, the second rotor assembly 60 is assumed to be configured to satisfy L3 > D1 + D2 and L3 > D3 + D4.

[0084] If the first rotor assembly 40 is capable of providing axial movement and the second rotor assembly 60 is capable of providing axial movement, then it can be seen that if the sum of the axial movements of the two diagonally positioned rotors in the direction of moving towards each other is smaller than the gap between the first rotor 41 and the second rotor 42, then it can be assumed that there will always be a gap or exactly zero gap between the two diagonally positioned rotors, thereby preventing the two diagonally positioned rotors from interfering with each other.

[0085] 1 and 8 , the housing 10 further includes an intake port 11, a first exhaust port 12, and a second exhaust port 13 communicating with an accommodation space of the housing 10 for accommodating the first rotating shaft 20, the connection assembly 30, the first rotor assembly 40, the second rotating shaft 50, and the second rotor assembly 60. The intake port 11 is used to transfer gas outside the housing 10 to the accommodation space within the housing 10 when the first rotor assembly 40 and the second rotor assembly 60 engage and rotate. The first exhaust port 12 and the second exhaust port 13 are used to compress gas within the accommodation space of the housing 10 to be outside the housing 10 when the first rotor assembly 40 and the second rotor assembly 60 engage and rotate. This allows the intake, compression, and exhaust processes of the compressor 200 to be realized.

[0086] The intake port 11 is positioned adjacent to the first rotor 41, the second rotor 42, the third rotor 61, and the fourth rotor 62, and is located on a first end face of the first rotor 41. 411 , second rotor 42 The third end face of 421 , the fifth end surface 611 of the third rotor 61, and the fourth rotor62 The 7th End face 621 are both suction end faces adjacent to the intake port 11. The first exhaust port 12 is located at adjacent positions of the first rotor 41, the third rotor 61, and the housing 10, and the second end face 412 of the first rotor 41 and the sixth end face 612 of the third rotor 61 are both exhaust end faces adjacent to the first exhaust port 12. The second exhaust port 13 is located at adjacent positions of the second rotor 42, the fourth rotor 62, and the housing 10, and the fourth end face 422 of the second rotor 42 and the eighth end face 622 of the fourth rotor 62 are both exhaust end faces adjacent to the second exhaust port 13.

[0087] The intake port 11 is a first Rotating shaft 20 It can be seen that the first exhaust port 12 and the second exhaust port 13 are located at either end of the housing 10 along the axial direction of the first rotating shaft 20.

[0088] In the process of compressing gas, the compressor 200 generates axial forces acting on the two pairs of rotor assemblies due to the different pressures of the gas at the intake and exhaust ports, which form the main load during the operation of the compressor. In addition, since the axial force always flows from the exhaust port to the intake port, the related art usually balances this axial force by adding thrust bearings on both sides of the rotating shaft. However, if there are too many thrust bearings, excessive operating loss will occur and the efficiency of the compressor will decrease.

[0089] Based on this, in one embodiment of the present disclosure, the spiral direction of the first rotor 41 and the spiral direction of the second rotor 42 are set to be opposite to each other, so that when the first rotor assembly 40 and the second rotor assembly 60 are engaged with each other and rotate, opposite axial forces are generated between the first rotor 41 and the second rotor 42, which can also be understood as opposite axial flows being generated between the first rotor 41 and the second rotor 42. Due to the symmetry of the axial forces, the axial forces in both directions generated between the first rotor 41 and the second rotor 42 can be substantially canceled out.

[0090] As described in the above embodiment of the present application, it can be seen that the first rotor 41 has a plurality of first helical blades 415, and the second rotor 42 has a plurality of second helical blades 425, and the number of the first helical blades 415 is the same as the number of the second helical blades 425. By setting the helical directions of the first helical blades 415 and the second helical blades 425 to be opposite to each other, for example, one helical blade 415 can be set to spiral leftward and the other helical blade can be set to spiral leftward. 425 is set to be a right-handed spiral, the spiral directions of the first rotor 41 and the second rotor 42 can be reversed.

[0091] Furthermore, in one embodiment of the present disclosure, the spiral direction of the third rotor 61 and the spiral direction of the fourth rotor 62 are also set in opposite directions, so that when the first rotor assembly 40 and the second rotor assembly 60 engage with each other and rotate, opposite axial forces are generated between the third rotor 61 and the fourth rotor 62, which can also be understood as generating opposite axial flows between the third rotor 61 and the fourth rotor 62. Due to the symmetry of the axial forces, 3 rotor 61 and 4 rotor 62 It can be seen that the third rotor 61 has a plurality of third helical blades 613, and the fourth rotor 62 has a plurality of fourth helical blades 623, and the number of the fourth helical blades 623 is the same as the number of the third helical blades 613. By setting the helical direction of the third helical blades 613 and the helical direction of the fourth helical blades 623 in opposite directions, for example, by making one a left-handed spiral and the other a right-handed spiral, the helical directions of the third rotor 61 and the fourth rotor 62 can be reversed.

[0092] In the embodiment of the present disclosure, the third rotor 61 may be integrally formed with the second rotating shaft 50, and the fourth rotor 62 may be directly sleeved on the second rotating shaft 50 and fixedly connected to the second rotating shaft 50. For example, the fourth rotor 62 may have a shaft hole 624 that fits onto the second rotating shaft 50, and the shaft hole 624 may be formed by the fourth rotor 62. 62 The third rotor 61 and the fourth rotor 62 fit tightly with the second rotatable shaft 50 such that they are sleeved and connected to the second rotatable shaft 50. In other embodiments of the present disclosure, the third rotor 61 and the fourth rotor 62 may both be formed integrally with the second rotatable shaft 50, or the third rotor 61 and the fourth rotor 62 may be sleeved onto the second rotatable shaft 520.

[0093] In an actual machining process, due to the influence of the machining process, it is not possible to machine the spiral direction of the third rotor 61 completely opposite to the spiral direction of the fourth rotor 62, that is, it is not possible to completely reverse the axial force between the third rotor 61 and the fourth rotor 62. Based on this, as shown in FIG. 1 , the compressor 200 in one embodiment of the present disclosure further includes a thrust bearing 70 disposed on one side of the second rotating shaft 50. The slight residual axial force between the third rotor 61 and the fourth rotor 62 is offset by the thrust bearing 70 to balance the forces acting on the third rotor 61 and the fourth rotor 62.

[0094] The compressor 200 further includes a drive motor 80 arranged on the other side of the second rotating shaft 50, for example, the second rotating shaft 50 may have a first end 51 and a second end 52 arranged back to back, a thrust bearing 70 sleeved in the first end 51, and the second end 52 connected to the drive motor 80 in a transmission manner, and the drive motor 80 is configured to drive the rotation of the second rotating shaft 50 to drive the second rotor assembly 60 to rotationally drive both the first rotor assembly 40 and the connection assembly 30 to rotate about the first rotating shaft 20.

[0095] In one embodiment of the present disclosure, the end face of the third rotor 61 remote from the fourth rotor 62 is flush with the end face of the first rotor 41 remote from the second rotor 42 in a direction perpendicular to the axial direction of the second rotating shaft 50. The end face of the fourth rotor 62 remote from the third rotor 61 is flush with the end face of the second rotor 42 remote from the first rotor 41 in a direction perpendicular to the axial direction of the second rotating shaft 50.

[0096] Typically, as shown in FIG. 8, the sixth end face of the third rotor 61 612 is the first direction (direction perpendicular to the axial direction of the second rotating shaft 50) The exhaust end face of the third rotor 61 is flush with the second end face 412 of the first rotor 41, that is, the exhaust end face of the third rotor 61 is flush with the exhaust end face of the first rotor 41. 622 is flush with the fourth end face 422 of the second rotor 42 in the first direction, and the exhaust end face of the fourth rotor 62 is flush with the exhaust end face of the second rotor 41. When the axial force of the first rotor assembly 40 and the axial force of the second rotor assembly 60 are balanced, clearances are maintained between the exhaust end faces of all negative and positive rotors and the housing 10. like ,Also The same gap , negative rotor and positive rotor These Between the exhaust end face and the housing 10 Maintain It can be ensured that the information is maintained.

[0097] As shown in FIG. 1, the housing 10 may include a housing 14, a first bearing house 15, and a second bearing house 16.

[0098] The first bearing house 15 is disposed on the exhaust end surface side of the first rotor 41 and the third rotor 61, or a part of the first bearing house 15 is disposed on the second end surface 412 side of the first rotor 41, and another part of the first bearing house 15 is disposed on the exhaust end surface side of the third rotor 61. 61 The sixth end face 612The first bearing house 15 is disposed on the side of the first rotor 41. Motor 80, and the first bearing house 15 is also arranged between the first and second rotating shafts 50. 2 End of 52 and is used to support the end of the first rotating shaft 20 near the first rotor 41 .

[0099] The second bearing house 16 is disposed on the exhaust end face side of the second rotor 42 and the fourth rotor 62, or a part of the second bearing house 16 is disposed on the side of the fourth end 422 of the second rotor 42, and 2 Bearing House 16 The other part of the second bearing house 16 is disposed on the side of the eighth end 622 of the fourth rotor 62. Rotating shaft 50 No. 1 End of 51 and 2 rotor 42 close to the 1 It is used to support the end of the rotating shaft 20.

[0100] The compressor 200 may further include a first radial bearing 91 and a second radial bearing 92, the first radial bearing 91 being a first radial bearing of the second rotating shaft 50. 2 End of 52 The sleeve is placed on the first bearing house 15, and the outer surface of the first radial bearing 91 is attached to the first bearing house 15. For example, the first bearing house 15 may be provided with an attachment groove, and the first radial bearing 91 is attached to the attachment groove and fixed to the wall of the attachment groove.

[0101] The second radial bearing 92 is the first bearing of the second rotating shaft 50. 1 End of 51 The second radial bearing 92 is sleeved on top of the first 4 rotor 62The second radial bearing 92 and the first radial bearing 91 are arranged on the side of the thrust bearing 70 closest to the first rotating shaft 50, and the outer surface of the thrust bearing 70 and the outer surface of the second radial bearing 92 are each fixed to the second bearing house 16. For example, the second bearing house 16 may also be provided with a mounting groove, and the thrust bearing 70 and the second radial bearing 92 are each mounted in the mounting groove and fixed to the wall of the mounting groove. The second radial bearing 92 and the first radial bearing 91 are used to cooperate to balance the radial force of the second rotating shaft 50. 20 The ends of the first bearing house 15 and the second bearing house 16 may be fixed to

[0102] The third limiting member 33 and the fourth limiting member 34 in the embodiment of the present disclosure are arranged such that there is a gap between the first rotor 41 and the first bearing house 15 and there is a gap between the second rotor 42 and the second of Bearing House 16 The first rotor 41 is arranged so that there is a gap between the first rotor 41 and the and the second rotor 42 The exhaust end face of the first rotor 41 may be limited so that the exhaust end face of the first rotor 41 does not collide with the end face of the first bearing house 15, and the exhaust end face of the second rotor 42 does not collide with the end face of the second bearing house 15. 16 Alternatively, the exhaust end faces of the two sets of negative rotors and the positive rotor can both be spaced apart from the end face of the bearing house.

[0103] The compressor 200 of one or more of the above embodiments can be applied to an air conditioner.

[0104] An embodiment of the present disclosure further provides an air conditioner including a compressor 200 defined by a combination of one or more of the above embodiments.

[0105] The compressor and air conditioner provided in the embodiments of the present disclosure have been described in detail above. Specific examples are applied in this specification to explain the principles and implementation forms of the present disclosure, and the description of the above examples is intended merely to facilitate understanding of the present disclosure. At the same time, those skilled in the art can change the specific implementation form and application scope based on the concept of the present disclosure. In short, the contents of this specification should not be understood as limiting the present disclosure. [Explanation of symbols]

[0106] 200 Compressor 10. Housing 11 Intake port 12 First exhaust port 13 Secondary exhaust port 14. Case 15. First Bearing House 16 Second Bearing House 20 First rotating shaft 21 Second oil supply passage 211 Main oil supply passage 212 Auxiliary oil supply passage 30 Connection Assembly 31 first limiting member 311 First body part 312 First Restriction 3121 First Aspect 3122 Second Aspect 313 First shaft hole 32 Second limiting member 321 Second body part 322 Second Restriction 3221 The Third Aspect 3222 The Fourth Aspect 323 Second shaft hole 33 Third limiting member 331 Third Body 332 Third Restriction 3321 The Fifth Aspect 3322 The Sixth Aspect 34 Fourth limiting member 341 Fourth Body 3421 The Seventh Aspect 3422 The Eighth Aspect 342 Fourth Restriction 35 First oil supply passage 40 First Rotor Assembly 41 First rotor 411 First end face 412 Second end face 413 First Limited Slot (i.e. groove) 414 First Body 415 First Spiral Blade 416 Third Restricted Slot (i.e. groove) 42 Second rotor 421 Third end face 422 Fourth end face 423 Second Limited Slot (i.e. groove) 424 Second Body 425 Second Spiral Blade 426 4th Limited Slot (i.e. groove) 50 Second rotating shaft 51 first end 52 Second end 60 Second Rotor Assembly 61 Third Rotor 611 5th end face 612 Sixth end face 613 Third Spiral Blade 62 Fourth Rotor 621 Seventh End 622 8th end face 623 Fourth Spiral Blade 70 Thrust Bearing 80 Drive motor 91 First Radial Bearing 92 Second radial bearing

Claims

1. a housing (10); a first rotating shaft (20) attached to the housing (10); a connection assembly (30) sleeved onto the first rotating shaft (20); a first rotor assembly (40) having a first rotor (41) and a second rotor (42) coaxially arranged on the connection assembly (30), the connection assembly (30) being configured to carry the first rotor (41) and the second rotor (42) for co-rotation around the first rotating shaft (20); A compressor (200) having The compressor (200) is configured such that the connection assembly (30) limits the relative position of the first rotor (41) and the second rotor (42), thereby creating a gap between the first rotor (41) and the second rotor (42).

2. 2. The compressor of claim 1, wherein a first axial gap exists between an end face of the first rotor (41) remote from the second rotor (42) and an end face of the housing (10) near the first rotor (41), and a second axial gap exists between the end face of the second rotor (42) remote from the first rotor (41) and an end face of the housing (10) near the second rotor (42), and the connection assembly (30) is configured to restrict the gap between the first rotor (41) and the second rotor (42) to be greater than the first axial gap and the gap between the first rotor (41) and the second rotor (42) to be greater than the second axial gap.

3. a second rotating shaft (50) attached to the housing (10); a second rotor assembly (60) having a third rotor (61) and a fourth rotor (62) coaxially arranged on the second rotating shaft (50), the second rotating shaft (50) being configured to drive the second rotor assembly (60) to rotate along a direction opposite to a rotation direction of the first rotor assembly (40), the third rotor (61) and the first rotor (41) being engaged with each other, and the fourth rotor (62) and the second rotor (42) being engaged with each other; The compressor (200) of claim 1, comprising:

4. 4. The compressor (200) according to claim 3, wherein an end face of the third rotor (61) close to the fourth rotor (62) protrudes from an end face of the first rotor (41) close to the second rotor (42), and an end face of the fourth rotor (62) close to the third rotor (61) protrudes from an end face of the second rotor (42) close to the first rotor (41), thereby preventing the first rotor (41) from interfering with the fourth rotor (62) and preventing the second rotor (42) from interfering with the third rotor (61).

5. The compressor (200) of claim 3, wherein adjacent end faces of the third rotor (61) and the fourth rotor (62) are joined.

6. 4. The compressor (200) according to claim 3, wherein a distance d1 exists in the axial direction of the second rotating shaft (50) between an end face of the third rotor (61) close to the fourth rotor (62) and an end face of the first rotor (41) close to the second rotor (42), and a distance d2 exists in the axial direction of the second rotating shaft (50) between an end face of the fourth rotor (62) close to the third rotor (61) and an end face of the second rotor (42) close to the first rotor (41), and the second rotor assembly (60) is configured so that d2 = d1.

7. When the gap between the first rotor (41) and the second rotor (42) is L3, and when the third rotor (61) moves along the axial direction of the second rotating shaft (50), an axial movement amount by which the third rotor (61) moves within the housing (10) along the axial direction of the second rotating shaft (50) toward the fourth rotor (62) is D1, and an axial movement amount by which the second rotor (42) moves toward the first rotor (41) is D2, the second rotor assembly (60) satisfies L3≧D1+D2. or when the fourth rotor (62) moves along the axial direction of the second rotating shaft (50), an axial movement amount of the fourth rotor (62) moving within the housing (10) along the axial direction of the second rotating shaft (50) toward the third rotor (61) is D3, an axial movement amount of the first rotor (41) moving toward the second rotor (42) is D4, and the second rotor assembly (60) is configured to satisfy L3 ≥ D3 + D4.

8. 4. The compressor (200) according to claim 3, wherein an intake port (11) is arranged adjacent to the first rotor (41), the second rotor (42), the third rotor (61), and the fourth rotor (62), a first exhaust port (12) is arranged adjacent to the first rotor (41), the third rotor (61), and the housing (10), and a second exhaust port (13) is arranged adjacent to the second rotor (42), the fourth rotor (62), and the housing (10).

9. 4. The compressor (200) of claim 3, wherein the first rotor (41) has a helical direction opposite to a helical direction of the second rotor (42), and the third rotor (61) has a helical direction opposite to a helical direction of the fourth rotor (62).

10. 4. The compressor (200) according to claim 3, wherein the third rotor (61) is integrally formed with the second rotating shaft (50), and the fourth rotor (62) has a shaft hole that fits with the second rotating shaft (50), and the shaft hole is snugly fitted with the second rotating shaft (50).

11. 4. The compressor of claim 3, further comprising a thrust bearing disposed on one side of the second rotatable shaft and a motor disposed on the other side of the second rotatable shaft, the motor configured to rotationally drive the second rotatable shaft, such that the second rotor assembly follows the rotation of the second rotatable shaft to drive the first rotor assembly and the connection assembly to rotate together around the first rotatable shaft.

12. 4. The compressor according to claim 3, wherein an end face of the third rotor (61) remote from the fourth rotor (62) is flush with an end face of the first rotor (41) remote from the second rotor (42) in a direction perpendicular to the axial direction of the second rotating shaft (50), and an end face of the fourth rotor (62) remote from the third rotor (61) is flush with an end face of the second rotor (42) remote from the first rotor (41) in a direction perpendicular to the axial direction of the second rotating shaft (50).

13. 2. The compressor according to claim 1, wherein the connection assembly includes a first restricting member and a second restricting member, both of which are sleeved on the first rotating shaft and rotatable around the first rotating shaft, the first restricting member being configured to restrict the position of an end face of the first rotor that is close to the second rotor, and the second restricting member being configured to restrict the position of an end face of the second rotor that is close to the first rotor.

14. an end surface of the first rotor (41) close to the second rotor (42) having a first limiting groove (413) along the axial direction of the first rotating shaft (20); the first limiting member (31) has a first body portion (311) and a first limiting portion (312); the first body portion (311) is sleeve-disposed on the first rotating shaft (20); the first limiting portion (312) is disposed around the outer periphery of the outer surface of the first body portion (311); and the first limiting portion (312) is inserted into the first limiting groove (413); 14. The compressor (200) according to claim 13, wherein an end surface of the second rotor (42) close to the first rotor (41) is provided with a second limiting groove (423) along the axial direction of the first rotating shaft (20), the second limiting member (32) has a second body portion (321) and a second limiting portion (322), the second body portion (321) is sleeve-disposed on the first rotating shaft (20) and disposed adjacent to the first body portion (311), the second limiting portion (322) is disposed around the outer periphery of the outer surface of the second body portion (321), and the second limiting portion (322) is inserted into the second limiting groove (423).

15. 15. The compressor (200) according to claim 14, wherein an end face of the first restriction (312) close to the second restriction (322) protrudes on a side of the end face of the first rotor (41) close to the second rotor (42), and an end face of the second restriction (322) close to the first restriction (312) protrudes on a side of the end face of the second rotor (42) close to the first rotor (41).

16. 2. The compressor (200) of claim 1, wherein a distance in the axial direction of the first rotating shaft (20) between an end face of the first rotor (41) near the second rotor (42) and an end face of the second rotor (42) near the first rotor (41) gradually increases from the axis of the first rotor assembly (40) toward the outer periphery of the first rotor assembly (40).

17. the first restricting member (31) has a first body portion (311) and a first restricting portion (312), the first body portion (311) is sleeve-disposed on the first rotating shaft (20), the first restricting portion (312) is disposed around the outer periphery of the outer surface of the first body portion (311), and a side of the first restricting portion (312) away from the second rotor (42) abuts against an end surface of the first rotor (41) close to the second rotor (42); 14. The compressor (200) of claim 13, wherein the second restricting member (32) has a second body portion (321) and a second restricting portion (322), the second body portion (321) is sleeve-disposed on the first rotating shaft (20) and is disposed adjacent to the first body portion (311), the second restricting portion (322) is disposed around the outer periphery of the outer surface of the second body portion (321), and a side of the second restricting portion (322) away from the first rotor (41) abuts an end face of the second rotor (42) close to the first rotor (41).

18. 15. The compressor (200) of claim 14, wherein the connection assembly (30) further comprises a third limiting member (33) and a fourth limiting member (34), the third limiting member (33) being configured to limit the distance between the housing (10) and an end face of the first rotor (41) remote from the second rotor (42), and the fourth limiting member (34) being configured to limit the distance between the housing (10) and an end face of the second rotor (42) remote from the first rotor (41).

19. the third restricting member (33) has a third body portion (331) and a third restricting portion (332), the third body portion (331) is sleeve-disposed on the first rotating shaft (20) and is disposed adjacent to the first body portion (311), the third restricting portion (332) is disposed around the outer periphery of the outer surface of the third body portion (331), and the third restricting portion (332) abuts against an end face of the first rotor (41) remote from the second rotor (42); 19. The compressor (200) of claim 18, wherein the fourth restricting member (34) has a fourth body portion (341) and a fourth restricting portion (342), the fourth body portion (341) is sleeve-disposed on the first rotating shaft (20) and disposed adjacent to the second body portion (321), the fourth restricting portion (342) is disposed around an outer periphery of the outer surface of the fourth body portion (341), and the fourth restricting portion (342) abuts against an end face of the second rotor (42) remote from the first rotor (41).

20. an end surface of the first rotor (41) away from the second rotor (42) having a third limiting groove (416) along the axial direction of the first rotating shaft (20); the third limiting member (33) having a third body portion (331) and a third limiting portion (332), the third body portion (331) being sleeve-disposed on the first rotating shaft (20) and disposed adjacent to the first body portion (311); the third limiting portion (332) being disposed around the outer periphery of the outer surface of the third body portion (331); and the third limiting portion (332) being inserted into the third limiting groove (416); 19. The compressor (200) of claim 18, wherein an end surface of the second rotor (42) remote from the first rotor (41) is provided with a fourth limiting groove (426) along the axial direction of the first rotating shaft (20), the fourth limiting member (34) has a fourth body portion (341) and a fourth limiting portion (342), the fourth body portion (341) is sleeve-disposed on the first rotating shaft (20) and disposed adjacent to the second body portion (321), the fourth limiting portion (342) is disposed around the outer periphery of the outer surface of the fourth body portion (341), and the fourth limiting portion (342) is inserted into the fourth limiting groove (426).

21. The compressor (200) of claim 1, wherein the connection assembly (30) material comprises a tin bronze material.

22. 2. The compressor (200) of claim 1, wherein the first rotating shaft (20) and the connection assembly (30) each include an oil supply passage, and an oil supply passage (211, 212) located on the first rotating shaft (20) communicates with an oil supply passage (35) located on the connection assembly (30).

23. An air conditioning system comprising a compressor (200) according to any one of claims 1 to 22.

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