Compressors with self-aligning structure and automobiles

Abstract

This invention provides a compressor with a self-aligning structure and an automobile. The compressor includes: a crankshaft; an eccentric shaft and a stop pin, respectively disposed on the top of the crankshaft; a counterweight, including a base plate and a counterweight portion formed on one side of the base plate, the base plate having a first through hole and a second through hole, the eccentric shaft passing through the first through hole, and the stop pin passing through the second through hole and having a clearance fit with the inner circumference of the second through hole; and a self-aligning component, one end of which is sleeved on the end of the eccentric shaft and inserted into the first through hole, the other end of which is connected to a moving scroll. As the crankshaft rotates, the eccentric shaft drives the self-aligning component to rotate eccentrically to contact the inner circumference of the first through hole, thereby driving the counterweight to rotate. The eccentric shaft and the stop pin form a double-pin limiter for the circumferential movement of the counterweight. This invention utilizes the structure of the eccentric swing sleeve to ensure the meshing effect during low-speed operation of the compressor, enabling the compressor to quickly enter the meshing state and improving the operating range of the compressor.

Description

Technical Field

[0001] This invention relates to the field of vehicle refrigeration equipment, and more specifically, to a compressor with a self-aligning structure and an automobile. Background Technology

[0002] Existing automotive electric scroll compressors utilize centrifugal force, causing the moving scroll to mesh with the stationary scroll during operation, which in turn rotates and compresses the refrigerant gas via the crankshaft. If the compressor's scrolls cannot mesh quickly, internal leakage will occur, resulting in lower compressor performance, higher exhaust temperature, and a reduced operating range.

[0003] Therefore, the present invention provides a smaller compressor with a self-aligning structure and an automobile. Summary of the Invention

[0004] In view of the problems in the prior art, the compressor and automobile with self-aligning structure of the present invention overcome the difficulties of the prior art. It can use the structure of the eccentric swing sleeve to ensure the meshing effect of the compressor when running at low speed, so that the compressor can quickly enter the meshing state and improve the operating range of the compressor.

[0005] Embodiments of the present invention provide a compressor having a self-aligning structure, comprising:

[0006] Crankshaft;

[0007] An eccentric shaft and a stop pin are respectively located at the top of the crankshaft;

[0008] The counterweight includes a base plate and a counterweight portion formed on one side of the base plate. The base plate has a first through hole and a second through hole. An eccentric shaft passes through the first through hole, and a stop pin passes through the second through hole and is clearance-fitted with the inner circumference of the second through hole.

[0009] The self-aligning component is fitted at one end to the end of the eccentric shaft and inserted into the first through hole, and the other end is connected to the moving scroll. As the crankshaft rotates, the eccentric shaft drives the self-aligning component to rotate eccentrically so as to contact the inner circumference of the first through hole, thereby driving the counterweight to rotate. Furthermore, the movement stroke of the counterweight is also limited by the stop pin. The eccentric shaft and the stop pin form a double pin limit for the circumferential movement of the counterweight.

[0010] Preferably, when the eccentric shaft drives the self-aligning component to rotate, the counterweight is in clearance fit with the eccentric shaft, and the self-aligning component and the moving scroll move in the direction of meshing with the scroll's spiral line under the action of centrifugal force.

[0011] Preferably, when the self-aligning component drives the moving scroll to move, so that the moving scroll and the disk mesh, the counterweight rotates in the opposite direction under the action of centrifugal force. The gap between the self-aligning component and the counterweight gradually decreases until they contact, driving the counterweight to rotate, so as to balance the rotation posture of the compressor.

[0012] Preferably, the self-aligning component includes a first cylindrical portion and a second cylindrical portion. The first cylindrical portion is disposed at the end of the second cylindrical portion and forms an inwardly recessed shoulder. The first cylindrical portion is inserted into a first through hole, and the outer periphery of the first cylindrical portion is clearance-fitted with the inner periphery of the first through hole.

[0013] Preferably, the central axis of the first cylindrical part is coaxial with the central axis of the second cylindrical part, and the self-aligning component is also provided with an eccentric hole. The axis of the eccentric hole is offset from the central axis of the first cylindrical part, and the inner circumference of the eccentric hole is clearance-fitted with the outer circumference of the eccentric shaft.

[0014] Preferably, the outer diameter of the second cylindrical portion is larger than the inner diameter of the first through hole, and the inner diameter of the first through hole is larger than the outer diameter of the first cylindrical portion.

[0015] Preferably, the center of the first through hole is located on the axis of symmetry of the counterweight.

[0016] Preferably, the second through hole is located between the first through hole and the center point of the counterweight.

[0017] Preferably, the counterweight has a rounded end, and the stop pin has a circular or elliptical cross-section.

[0018] Embodiments of the present invention also provide an automobile including the compressor described above with an autocentric structure.

[0019] The compressor with a self-aligning structure of the present invention can ensure the meshing effect when the compressor is running at low speed by utilizing the structure of the eccentric swing sleeve, so that the compressor can quickly enter the meshing state and improve the operating range of the compressor. Attached Figure Description

[0020] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the compressor with a self-aligning structure according to the present invention.

[0022] Figure 2 yes Figure 1 Sectional view along the DD direction.

[0023] Figure 3 This is a first-view perspective perspective view of the combination of the self-aligning component and the counterweight component in the compressor with the self-aligning structure of the present invention.

[0024] Figure 4 This is a second perspective view of the combination of the self-aligning component and the counterweight in the compressor with the self-aligning structure of the present invention.

[0025] Figure 5 This is a cross-sectional view of the self-aligning component and counterweight combination in the compressor with self-aligning structure of the present invention.

[0026] Figure 6 yes Figure 5 A sectional view along the EE direction.

[0027] Figure 7 This is a cross-sectional schematic diagram of the compressor with self-aligning structure of the present invention starting to rotate.

[0028] Figure 8 This is a cross-sectional schematic diagram of the compressor with self-aligning structure of the present invention rotating at high speed.

[0029] Figure Labels

[0030] 1. Alignment component

[0031] 11 First cylindrical section

[0032] 12 Second cylindrical section

[0033] 13 Eccentric holes

[0034] 2. Counterweights

[0035] 21. Base plate section

[0036] 22. Counterweight section

[0037] 23 First through hole

[0038] 24 Second through hole

[0039] 3. Moving scroll plate

[0040] 4. Moving scroll bearing

[0041] 5. Middle Shell

[0042] 6 Crankshaft

[0043] 61 Short shaft section

[0044] 7. Stator

[0045] 8 Main bearings Detailed Implementation

[0046] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand the other advantages and effects of this application from the content disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0047] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0048] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0049] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] To clearly illustrate this application, devices unrelated to the description are omitted, and the same or similar constituent elements throughout the specification are given the same reference numerals.

[0051] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0052] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0053] Although the terms first, second, etc., are used in some instances herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0054] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this application. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in the specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0055] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the content of this present application, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0056] Figure 1 This is a schematic diagram of the compressor with a self-aligning structure according to the present invention. Figure 2 yes Figure 1 Sectional view along the DD direction. Figure 3 This is a first-view perspective perspective view of the combination of the self-aligning component and the counterweight component in the compressor with the self-aligning structure of the present invention. Figure 4 This is a second perspective view of the combination of the self-aligning component and the counterweight in the compressor with the self-aligning structure of the present invention. Figure 5 This is a cross-sectional view of the self-aligning component and counterweight combination in the compressor with self-aligning structure of the present invention. Figure 6 yes Figure 5 A sectional view along the EE direction. (e.g.) Figures 1 to 6As shown, the compressor with a self-aligning structure of the present invention includes: a crankshaft 6, an eccentric shaft 61, a stop pin 62, a self-aligning component 1, and a counterweight 2. The eccentric shaft 61 and the stop pin 62 are respectively disposed on the top of the crankshaft 6. The counterweight 2 includes a base plate 21 and a counterweight portion 22 formed on one side of the base plate 21. The base plate 21 has a first through hole 23 and a second through hole 24. The eccentric shaft 61 passes through the first through hole 23, and the stop pin 62 passes through the second through hole 24 and is clearance-fitted with the inner circumference of the second through hole 24. The self-aligning component 1 is sleeved at one end of the eccentric shaft 61 and inserted into the first through hole 23, while the other end is connected to the moving scroll 3. As the crankshaft 6 rotates, the eccentric shaft 61 drives the self-aligning component 1 to rotate eccentrically, contacting the inner circumference of the first through hole 23, thus driving the counterweight 2 to rotate. Furthermore, the movement stroke of the counterweight 2 is limited by the stop pin 62. The eccentric shaft 61 and the stop pin 62 form a double-pin limit for the circumferential movement of the counterweight 2. This invention utilizes the special structure of the eccentric swing sleeve to ensure the meshing effect during low-speed operation of the compressor, enabling the compressor to quickly enter the meshing state and improving the compressor's operating range. Simultaneously, the self-aligning structure is designed as a separate unit, reducing manufacturing costs.

[0057] In a preferred embodiment, when the eccentric shaft 61 drives the self-aligning component 1 to rotate, the counterweight 2 is in clearance fit with the eccentric shaft 61, and the self-aligning component 1 and the moving volute 3 move in the direction of meshing with the volute spiral under the action of centrifugal force, but this is not a limitation.

[0058] In a preferred embodiment, when the self-aligning component 1 drives the moving scroll 3 to move, so that the moving scroll 3 and the disk mesh, the counterweight 2 rotates in the opposite direction under the action of centrifugal force. The gap between the self-aligning component 1 and the counterweight 2 gradually decreases until they contact, driving the counterweight 2 to rotate, so as to balance the rotation posture of the compressor, but not limited thereto.

[0059] In a preferred embodiment, the self-aligning component includes a first cylindrical portion 11 and a second cylindrical portion 12. The first cylindrical portion 11 is disposed at the end of the second cylindrical portion 12 and forms an inwardly recessed shoulder. The first cylindrical portion 11 is inserted into a first through hole 23. The outer periphery of the first cylindrical portion 11 is in clearance fit with the inner periphery of the first through hole 23, but this is not a limitation.

[0060] In a preferred embodiment, the central axis of the first cylindrical portion 11 is coaxial with the central axis of the second cylindrical portion 12, and the self-aligning member 1 is also provided with an eccentric hole 13. The axis of the eccentric hole is offset from the central axis of the first cylindrical portion 11, and the inner circumference of the eccentric hole 13 is clearance-fitted with the outer circumference of the eccentric shaft 61, but this is not a limitation.

[0061] In a preferred embodiment, the outer diameter of the second cylindrical portion 12 is larger than the inner diameter of the first through hole 23, and the inner diameter of the first through hole 23 is larger than the outer diameter of the first cylindrical portion 11, but this is not a limitation.

[0062] In a preferred embodiment, the center of the first through hole 23 is located on the axis of symmetry of the counterweight 2, but this is not a limitation.

[0063] In a preferred embodiment, the second through hole 24 is located between the center point of the first through hole 23 and the counterweight 22, but this is not a limitation.

[0064] In a preferred embodiment, the counterweight is an arc at one end, but this is not a limitation.

[0065] In a preferred embodiment, the cross-section of the stop pin 62 is circular or elliptical, but is not limited thereto.

[0066] This invention redesigns the eccentric structure by separating the self-aligning component 1 and the counterweight 2. This allows the self-aligning component 1 to begin working before the counterweight 2 when the compressor starts operating, ensuring rapid engagement of the compressor's scroll plates. After the scroll plates mesh to form a sealed compression chamber, the counterweight 2 engages to balance the compressor's imbalance. This design ensures effective engagement after the compressor starts working and also allows for stable operation. It is particularly effective at low speeds, maintaining a tight seal in the working chamber and preventing repeated compression, thus ensuring the compressor's compression efficiency and operating range. Furthermore, the split eccentric structure is simpler to manufacture and less expensive.

[0067] This patent discloses a novel eccentric structure automotive compressor, comprising a front housing, a stationary scroll, a moving scroll 3, a moving scroll bearing 4, a middle housing 5, a motor, a stator 7, a main bearing 8, a baffle, a rear housing, and a motor controller. The eccentric structure is characterized by the separation of the self-aligning component 1 and the counterweight 2, with a clearance fit between them. The self-aligning component 1 has a stepped structure, which axially limits the counterweight 2 during use. The circumferential limiting of the counterweight 2 is achieved jointly by the self-aligning component 1 and a stop pin. During operation, the self-aligning component 1 and the counterweight 2 enter their working states sequentially.

[0068] The eccentric structure designed in this scheme is mounted on the crankshaft, specifically at the crankpin. It connects the crankshaft and the moving scroll, transmitting the power from the crankshaft's rotation to the moving scroll, while simultaneously performing self-alignment and balancing. The eccentric structure and the crankpin have a clearance fit, with an axial limit provided by a retaining circumferential spring. The retaining circumferential spring fixes the eccentric structure to the crankpin, allowing it a certain degree of freedom. Simultaneously, a stop pin and the crankpin together provide circumferential limitation for the self-aligning structure, enabling it to rotate slightly for self-alignment and retraction.

[0069] Figure 7 This is a cross-sectional schematic diagram of the compressor with a self-aligning structure of the present invention starting to rotate. When the compressor starts working, as... Figure 7As shown, the motor drives the crankshaft to start rotating, and the crankshaft's crank pin drives the self-aligning component 1 of the eccentric structure to rotate. Since the self-aligning component 1 and the counterweight 2 are in clearance fit, the counterweight 2 does not participate in the work. At this time, the self-aligning component 1 and the moving scroll that is in contact with it move in the direction of the vortex spiral meshing under the action of centrifugal force, so that the spiral meshing of the vortex is guaranteed.

[0070] Figure 8 This is a cross-sectional schematic diagram of the compressor with a self-aligning structure of the present invention rotating at high speed. For example... Figure 8 As shown, as the rotation continues, the counterweight 2 rotates in the opposite direction under the action of centrifugal force, and the gap between the self-aligning component 1 and the counterweight 2 gradually decreases until they contact, and the positional relationship becomes... Figure 8 In this state, counterweight 2 begins to work. Because counterweight 2 is subjected to centrifugal force in the opposite direction to that of self-aligning component 1, it balances the imbalance in the entire shaft system, achieving stable operation and low noise during compressor operation. The stop pin limits the rotation of counterweight 2. Its top can be circular or elliptical. When counterweight 2 rotates, its pre-set limiting hole contacts the stop pin, limiting the rotation and ensuring it remains within a preset range.

[0071] Embodiments of the present invention also provide an automobile, including the compressor with the self-aligning structure described above, the relevant technical features of which are as described above and will not be repeated here.

[0072] In summary, the compressor with a self-aligning structure of the present invention can ensure the meshing effect of the compressor when running at low speed by utilizing the structure of the eccentric swing sleeve, so that the compressor can quickly enter the meshing state and improve the operating range of the compressor.

[0073] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A compressor with a self-aligning structure, characterized in that, include: Crankshaft (6); An eccentric shaft (61) and a stop pin (62) are respectively disposed on the top of the crankshaft (6); The counterweight (2) includes a base plate (21) and a counterweight part (22) formed on one side of the base plate (21). The base plate (21) is provided with a first through hole (23) and a second through hole (24). The eccentric shaft (61) passes through the first through hole (23), and the stop pin (62) passes through the second through hole (24) and is in clearance fit with the inner circumference of the second through hole (24). The self-aligning component (1) is fitted at one end to the end of the eccentric shaft (61) and inserted into the first through hole (23), and the other end is connected to the moving scroll (3). It rotates with the crankshaft (6). The eccentric shaft (61) drives the self-aligning component (1) to rotate eccentrically so as to contact the inner circumference of the first through hole (23), thereby driving the counterweight (2) to rotate. Furthermore, the movement stroke of the counterweight (2) is also limited by the stop pin (62). The eccentric shaft (61) and the stop pin (62) form a double pin limit for the circumferential movement of the counterweight (2). When the eccentric shaft (61) drives the self-aligning component (1) to rotate, The counterweight (2) is fitted with the eccentric shaft (61) with a clearance. The self-aligning component (1) and the moving scroll (3) move in the direction of engagement of the scroll spiral under the action of centrifugal force. When the self-aligning component (1) drives the moving scroll (3) to move, so that the moving scroll (3) and the stationary scroll mesh, the counterweight (2) rotates in the opposite direction under the action of centrifugal force. The gap between the self-aligning component (1) and the counterweight (2) gradually decreases to contact, driving the counterweight (2) to rotate, so as to balance the rotation posture of the compressor. The second through hole (24) is located between the center point of the first through hole (23) and the counterweight part (22).

2. The compressor with a self-aligning structure as described in claim 1, characterized in that, The self-aligning component includes a first cylindrical portion (11) and a second cylindrical portion (12). The first cylindrical portion (11) is disposed at the end of the second cylindrical portion (12) and forms an inwardly recessed shoulder. The first cylindrical portion (11) is inserted into the first through hole (23). The outer periphery of the first cylindrical portion (11) is in clearance fit with the inner periphery of the first through hole (23).

3. The compressor with a self-aligning structure as described in claim 2, characterized in that, The central axis of the first cylindrical part (11) is coaxial with the central axis of the second cylindrical part (12), and the self-aligning part (1) is also provided with an eccentric hole (13). The axis of the eccentric hole is offset from the central axis of the first cylindrical part (11), and the inner circumference of the eccentric hole (13) is clearance-fitted with the outer circumference of the eccentric shaft (61).

4. The compressor with a self-aligning structure as described in claim 2, characterized in that, The outer diameter of the second cylindrical part (12) is greater than the inner diameter of the first through hole (23), and the inner diameter of the first through hole (23) is greater than the outer diameter of the first cylindrical part (11).

5. The compressor with a self-aligning structure as described in claim 1, characterized in that, The center of the first through hole (23) is located on the axis of symmetry of the counterweight (2).

6. The compressor with a self-aligning structure as described in claim 1, characterized in that, The counterweight is an arc at one end, and the cross-section of the stop pin (62) is circular or elliptical.

7. A car, characterized in that, Including the compressor with a self-aligning structure as described in claim 1.

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