CN219754796U - Scroll compressor and vehicle - Google Patents

Abstract

The utility model discloses a scroll compressor and a vehicle, wherein the scroll compressor comprises: a motor is arranged in the shell; the bracket is arranged on the shell; the compression part is positioned at one side of the bracket and comprises a movable disc and a static disc which rotate relatively; the crankshaft comprises a first matching section and a second matching section, the first matching section is connected with the motor, and the crankshaft penetrates through the bracket so that the second matching section is matched with the support bearing; and the connecting piece is respectively connected with the crankshaft and the compression part, and the hardness of the peripheral wall of the first matching section is greater than that of the second matching section. According to the scroll compressor provided by the utility model, the hardness of the outer peripheral wall of the first matching section of the crankshaft is greater than that of the second matching section, so that the hardness of the crankshaft meets the rotation requirement of a motor, the second matching section is not influenced, and the cost of the scroll compressor is reduced.

Description

Scroll compressor and vehicle

Technical Field

The utility model relates to the technical field of compressors, in particular to a scroll compressor and a vehicle.

Background

The crankshaft is used as the main part of vortex compressor to drive the movable vortex disk to translate and complete the compression process. The rotor of the motor is connected with the crankshaft, and the crankshaft can bear shearing force during rotation, so that the hardness and strength of the crankshaft are required to meet the requirements.

As the refrigerating capacity requirement of the scroll compressor is higher, the motor rotating speed requirement is higher, and the requirement on the hardness of the crankshaft is higher, but the improvement of the hardness of the crankshaft is unfavorable for the processing (such as drilling) of the crankshaft, and the processing cost is increased sharply.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a scroll compressor, in which the hardness of the outer peripheral wall of the first mating section of the crankshaft is greater than that of the second mating section, so that the hardness of the first mating section meets the rotation requirement of the motor, and the second mating section is not affected (e.g. drilled), thereby reducing the production cost of the crankshaft and further reducing the cost of the scroll compressor.

The utility model also provides a vehicle comprising the vortex compressor.

According to an embodiment of the present utility model, a scroll compressor includes: a motor is arranged in the shell; the support is arranged on the shell and is provided with a containing cavity for containing the support bearing; the compression part is positioned at one side of the bracket and comprises a movable disc and a static disc which rotate relatively; the crankshaft comprises a first matching section and a second matching section, the first matching section is connected with the motor, the crankshaft penetrates through the support to enable the second matching section to be matched with the support bearing, and the second matching section is further provided with a first connecting hole; the connecting piece is respectively connected with the crankshaft and the compression part, so that the crankshaft drives the movable disc to eccentrically rotate, and the hardness of the peripheral wall of the first matching section is greater than that of the second matching section.

According to the scroll compressor provided by the embodiment of the utility model, on one hand, the hardness of the outer peripheral wall of the first matching section of the crankshaft is higher than that of the second matching section, so that the hardness of the first matching section meets the rotation requirement of the motor; on the other hand, the hardness of the second matching section is smaller than that of the first matching section, machining (such as drilling) of the second matching section is not affected, and production cost of the crankshaft is reduced, so that cost of a vehicle is reduced.

In some embodiments, the first mating segment includes a central segment and an outer cladding wrapped around the central segment, the outer cladding defining a peripheral wall of the first mating segment, the outer cladding having a hardness greater than a hardness of the central segment.

In some embodiments, the first mating segment has a diameter a and the second mating segment has a diameter B, the ratio of B/a ranging from: 1 to 1.25.

In some embodiments, the receiving chamber communicates with an oil return passage within the scroll compressor; the scroll compressor further comprises a thrust component, wherein the thrust component is arranged in the accommodating cavity and is positioned on one side, away from the compression component, of the supporting bearing, the thrust component comprises a thrust part and a sealing part, the thrust part is respectively abutted against the supporting bearing and the support, and the thrust part is provided with the sealing part protruding out of the thrust part and contacting with the inner wall of the accommodating cavity.

In some embodiments, a portion of the peripheral wall of the thrust portion projects outwardly to define the sealing portion.

In some embodiments, the sealing portion and the thrust portion are separate pieces.

In some embodiments, the outer peripheral wall of the thrust portion is provided with an annular accommodating groove, and the sealing portion is disposed in the accommodating groove and protrudes out of the thrust portion to be in contact with the inner wall of the accommodating cavity.

In some embodiments, at least one end face of the thrust portion is provided with an oil containing groove in an axial direction of the crankshaft.

In some embodiments, the oil sump extends to an outer peripheral wall of the thrust portion.

According to an embodiment of the present utility model, a vehicle includes: the scroll compressor described in the above technical scheme.

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

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a scroll compressor according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a crankshaft according to an embodiment of the present utility model;

FIG. 3 is an assembled schematic view of a thrust member according to an embodiment of the present utility model;

FIG. 4 is a schematic illustration of a thrust member according to an embodiment of the present utility model;

fig. 5 is yet another schematic illustration of a thrust member according to an embodiment of the present utility model.

Reference numerals: 100. a scroll compressor; 1. a housing; 11. an oil passage; 2. a bracket; 21. a receiving chamber; 3. a compression member; 31. a movable plate; 311. a second connection hole; 32. a static disc; 4. a crankshaft; 41. a first mating segment; 42. a second mating section; 421. a first connection hole; 5. a motor; 6. a support bearing; 7. a connecting piece; 8. a thrust member; 81. a thrust portion; 811. a receiving groove; 812. an oil tank; 813. a first end face; 814. a second end face; 82. and a sealing portion.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A scroll compressor 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

Referring to fig. 1, 2 and 3, a scroll compressor 100 according to an embodiment of the present utility model includes: a casing 1, a bracket 2, a compression member 3 and a crankshaft 4. The motor 5 is arranged in the shell 1, the motor 5 is in power connection with the compression part 3 through the crankshaft 4, and the motor 5 drives the compression part 3 to work through the crankshaft 4 so as to realize the processes of sucking, compressing and exhausting the refrigerant.

The bracket 2 is arranged on the casing 1, and the bracket 2 is provided with a containing cavity 21 for containing the support bearing 6. The compression part 3 is located one side of support 2, and motor 5 is located one side of support 2 deviating from compression part 3, and support 2 and support bearing 6 cooperation are worn to establish to bent axle 4, and the both ends of bent axle 4 are connected with motor 5 and compression part 3 respectively.

Specifically, the crankshaft 4 includes: the first cooperation section 41 and the second cooperation section 42, the hardness of the outer peripheral wall of first cooperation section 41 is greater than the hardness of second cooperation section 42, and first cooperation section 41 links to each other with motor 5, and the bent axle 4 wears to establish support 2 so that second cooperation section 42 cooperates with support bearing 6, and second cooperation section 42 still links to each other with compression part 3 through connecting piece 7.

According to the scroll compressor 100 of the embodiment of the utility model, since the first matching section 41 is connected with the motor 5, when the scroll compressor 100 works, the motor 5 drives the crankshaft 4 to rotate at a high speed, the first matching section 41 is subjected to shearing force, the hardness requirement on the first matching section 41 is higher, the hardness of the peripheral wall of the first matching section 41 is higher than that of the second matching section 42, so that the hardness of the first matching section 41 meets the rotation requirement of the motor 5, and the hardness of the second matching section 42 is lower than that of the first matching section 41, the processing (such as drilling) of the second matching section 42 is not influenced, the production cost of the crankshaft 4 is reduced, and the cost of the scroll compressor 100 is reduced.

It should be noted that the compression member 3 includes a movable disk 31 and a stationary disk 32 that rotate relatively, and the connecting member 7 is connected to the crankshaft 4 and the compression member 3, respectively, so that the crankshaft 4 drives the movable disk 31 to eccentrically rotate. In the operation of the scroll compressor 100, the motor 5 drives the crank shaft 4 to rotate the movable disc 31, and the movable disc 31 is engaged with the spiral teeth of the fixed disc 32 to realize the suction, compression and exhaust processes of the refrigerant.

The bracket 2 is disposed in the housing 1, and in some embodiments, the bracket 2 may be disposed within the housing 1, and in other embodiments, the bracket 2 may be sandwiched between the housing 1 and the stationary plate 32.

Referring to fig. 1, 2 and 3, in some embodiments, the connecting member 7 is configured as a pin, the end of the second mating section 42 is provided with a first connecting hole 421, the movable disk 31 is provided with a second connecting hole 311, one end of the connecting member 7 is inserted into the second mating section 42 through the first connecting hole 421, and the other end is inserted into the movable disk 31 through the second connecting hole 311, thereby achieving connection of the crankshaft 4 and the compression member 3. Because the hardness of the second mating segment 42 is smaller than that of the first mating segment 41, the difficulty in drilling the first connecting hole 421 in the production process of the crankshaft 4 is reduced, thereby reducing the production cost of the crankshaft 4.

Referring to fig. 1, 2 and 3, in some embodiments, the first mating segment 41 includes a central segment and an outer cladding wrapped around the central segment, the outer cladding defining a peripheral wall of the first mating segment 41, the outer cladding having a hardness greater than that of the central segment. Since the crankshaft 4 is usually formed from one piece of material during the production of the crankshaft 4, i.e. the crankshaft 4 is an integral piece, the material hardness of the parts of the crankshaft 4 is generally the same, i.e. the hardness of the central section is the same as the hardness of the second mating section 42, whereas in the present utility model the hardness of the outer envelope is greater than the hardness of the central section, i.e. the hardness of the outer envelope is greater than the hardness of the second mating section 42, by providing a layer of outer envelope outside the central section, whereby the hardness of the outer peripheral wall of the first mating section 41 is greater than the hardness of the second mating section 42.

In some embodiments, during the machining process of the crankshaft 4, the first mating segment 41 is subjected to high-frequency quenching, so that the surface of the first mating segment 41 has a hardened layer with a certain depth, thereby forming an outer cladding layer with hardness greater than that of the central segment, improving the surface hardness of the first mating segment 41, and maintaining the hardness state of the original base material on the surface of the crankshaft segment (the second mating segment 42) which is not subjected to high-frequency quenching.

In some embodiments, the difference between the hardness of the outer peripheral wall of the first mating segment 41 and the hardness of the second mating segment 42 is in the range of: HRC 25-40. That is, the hardness of the outer peripheral wall of the first mating segment 41 is higher than that of the second mating segment 42 by HRC 25-40, so that the first mating segment 41 can accommodate the high-speed rotation of the motor 5.

In some embodiments, the first mating segment 41 has a diameter a, the second mating segment 42 has a diameter B, and the ratio of B/a ranges from: 1 to 1.25. Because the second mating segment 42 needs to be provided with the first connecting hole 421, by the above technical solution, the diameter of the second mating segment 42 can be larger than that of the first mating segment 41, so as to ensure the structural strength of the second mating segment 42.

Referring to fig. 1, 2 and 3, in some embodiments, the receiving chamber 21 communicates with an oil return passage within the scroll compressor 100. The scroll compressor 100 further includes a thrust member 8, the thrust member 8 being provided in the housing chamber 21 and being located on a side of the support bearing 6 facing away from the compression member 3, the thrust member 8 including a thrust portion 81 and a seal portion 82, the thrust portion 81 being respectively abutted against the support bearing 6 and the bracket 2, the thrust portion 81 being provided with the seal portion 82 protruding therefrom and being in contact with an inner wall of the housing chamber 21.

Through above-mentioned technical scheme, can strengthen the leakproofness between thrust part 8 and the support 2 to prevent the problem that lubricating oil leakage appears in the assembly department of thrust part 8, in order to avoid the friction pair of spare parts such as support bearing 6, movable disk 31 to appear the problem of lacking oil, and then do benefit to the consumption that reduces scroll compressor 100 and reduce the wearing and tearing of friction pair.

The scroll compressor 100 includes a housing 1, a bracket 2, a compression member 3, a crankshaft 4, a thrust member 8, and an electronic control unit. An oil passage 11 communicating with the housing chamber 21 is defined between the compression member 3 and the bracket 2, and the oil passage 11 also communicates with an oil return passage in the scroll compressor 100. During operation of the scroll compressor 100, the cooling oil in the oil return passage may enter the accommodating chamber 21 through the oil passage 11 to form lubricating oil, so that the supporting bearing 6, the movable disk 31, and the like are lubricated by the lubricating oil.

The scroll compressor 100 is provided with an air suction port and an air discharge port, the air suction port is communicated with an outlet of the system evaporator through a pipeline, and the air discharge port is communicated with an inlet of the system condenser through a pipeline. Under the driving action of the motor 5, the crankshaft 4 rotates to drive the movable disk 31 to make revolution translation, and the compression part 3 compresses the refrigerant.

Further, the mixed fluid of the refrigerant and the refrigerating oil is sucked into the suction side area, sucked into the compression cavity through the suction channel and compressed, discharged to the discharge area of the static disc 32 through the discharge port of the static disc 32, then enters the centrifugal oil to perform oil-gas separation, and is discharged out of the scroll compressor 100 after passing through the discharge area of the scroll compressor 100, and continuously circulated through the system.

On the other hand, due to the centrifugal oil, the frozen oil is separated and collected in the oil storage area. After being throttled by the throttle mechanism, the frozen oil is supplied to the oil return channel, and then enters the main bearing chamber area to form lubricating oil, and the lubricating oil is used for lubricating one side of the movable disc 31, which is away from the static disc 32, and the anti-rotation mechanism.

The main bearing housing region is an oil storage space formed by thrust members 8 provided at the mating portions of the crankshaft 4 and the bracket 2, and a passage is provided in the main bearing housing region so as to communicate with the intake side. Therefore, the refrigerating oil circulation is required to enter the main bearing chamber region through the throttle mechanism, and the friction pair formed by the parts such as the support bearing 6 and the movable disk 31 is effectively lubricated and radiated, and impurities are prevented from remaining in the bearing friction track.

In the related art, due to poor tightness between the thrust member 8 and the bracket 2, lubricating oil leaks from the assembling position of the thrust member 8, so that the friction pair of the parts such as the support bearing 6 and the movable disc 31 is lack of oil, poor lubrication and the like are caused, and further, the problems of increased power consumption, abrasion of the friction pair and the like of the scroll compressor 100 are caused.

Note that, the sealing portion 82 and the thrust portion 81 may be integrally formed, or the sealing portion 82 and the thrust portion 81 may be separately formed, which is not limited herein.

In the present utility model, however, by providing the seal portion 82 protruding therefrom on the thrust portion 81, the sealability between the thrust portion 81 and the inner wall of the accommodation chamber 21 can be enhanced, thereby preventing the problem of leakage of the lubricating oil at the fitting portion of the thrust member 8.

According to the scroll compressor 100 of the embodiment of the utility model, the sealing part 82 is arranged to enhance the sealing performance between the thrust part 81 and the bracket 2, so that the problem of lubricating oil leakage at the assembling position of the thrust part 8 is prevented, the problem of oil shortage of friction pairs supporting parts such as the bearing 6 and the movable disc 31 is avoided, and further the reduction of the power consumption of the scroll compressor 100 and the reduction of the abrasion of the friction pairs are facilitated.

Referring to fig. 4 and 5, in some embodiments, a portion of the peripheral wall of the thrust portion 81 projects outwardly to define a sealing portion 82.

Therefore, the thrust portion 81 and the sealing portion 82 can be in an integrally formed structure, namely, the thrust portion 81 and the sealing portion 82 can be integrally formed, so that the sealing portion 82 does not need to be arranged on the thrust portion 81 independently, the assembly difficulty is reduced, and the production cost is reduced.

The outer diameter of the intermediate portion of the outer peripheral wall of the thrust portion 81 is larger than the outer diameter of the other portions of the outer peripheral wall of the thrust portion 81, i.e., the intermediate portion of the outer peripheral wall of the thrust portion 81 protrudes outward from the thrust portion 81 in the radial direction of the thrust portion 81 to form a seal portion 82.

Therefore, the thrust part 81 and the sealing part 82 can be of an integrated structure, so that the assembly difficulty is reduced, and the production cost is reduced.

Referring to fig. 3, in other embodiments, the sealing portion 82 and the thrust portion 81 are separate pieces.

Thereby, it is convenient to separately provide the seal portion 82 on the thrust portion 81, and when abrasion or damage occurs to the seal portion 82, only the seal portion 82 can be replaced, so that maintenance cost can be reduced.

In some embodiments, the outer peripheral wall of the thrust portion 81 is provided with an annular receiving groove 811, and the seal portion 82 is provided in the receiving groove 811 and protrudes from the thrust member 8 to be in contact with the inner wall of the receiving chamber 21.

Thereby, by providing the accommodation groove 811 so as to fix the seal portion 82 in the accommodation groove 811, the connection stability of the seal portion 82 and the thrust member 8 is enhanced, and the seal portion 82 protrudes from the thrust member 8 so that the seal portion 82 can be in contact with the inner wall of the accommodation chamber 21, thereby enhancing the sealing effect between the thrust member 8 and the inner wall of the accommodation chamber 21.

For example, the sealing portion 82 may be configured as an annular seal ring, and the sealing ring is sleeved on the thrust member 8 and is located in the annular accommodating groove 811, so that the contact area between the sealing portion 82 and the thrust member 8 can be increased, the connection stability between the sealing portion 82 and the thrust member 8 can be enhanced, and the sealing portion 82 can be limited by the accommodating groove 811, so as to prevent the sealing portion 82 from being separated from the thrust member 8.

Meanwhile, in the assembling process of the scroll compressor 100, the sealing portion 82 may be first installed in the accommodating groove 811, and then assembled together with the bracket 2, so that the assembling process is simplified, and the assembling difficulty is reduced.

Referring to fig. 3, 4 and 5, in some embodiments, at least one end surface of the thrust portion 81 is provided with an oil containing groove 812 in the axial direction of the crankshaft 4.

For example, in the axial direction of the crankshaft 4, the two end surfaces of the thrust member 8 are a first end surface 813 and a second end surface 814, respectively, wherein the first end surface 813 faces the support bearing 6 and the second end surface 814 faces away from the support bearing 6.

The oil accommodating groove 812 may be provided at the first end face 813, or the oil accommodating groove 812 may be provided at the second end face 814, or both the first end face 813 and the second end face 814 may be provided with the oil accommodating groove 812, so that when oil occurs on the end face of the thrust member 8, the oil is temporarily stored by the oil accommodating groove 812.

Preferably, the oil containing groove 812 is disposed on the first end surface 813, and since the support bearing 6 rotates relative to the thrust member 8, when the oil is contained in the oil containing groove 812, the oil in the oil containing groove 812 can act as lubrication between the thrust member 8 and the support bearing, thereby reducing wear of the support bearing 6 and the thrust member 8.

Preferably, the oil receiving groove 812 extends to the outer peripheral wall of the thrust member 8.

Thus, when the oil is provided between the outer peripheral wall of the thrust member 8 and the inner peripheral wall of the housing chamber 21, the oil can flow into the oil receiving groove 812, and the oil in the oil receiving groove 812 can lubricate between the thrust member 8 and the support bearing, thereby reducing wear of the support bearing 6 and the thrust member 8.

In some embodiments, the plurality of oil pockets 812 are provided, and the plurality of oil pockets 812 are spaced apart in the circumferential direction of the thrust portion 81.

In this way, it is convenient to temporarily store the oil in the circumferential direction of the thrust member 8 by the plurality of oil storage grooves 812, and to lubricate between the thrust member 8 and the support bearing by the oil in the plurality of oil storage grooves 812.

According to the vehicle of the embodiment of the present utility model, including the scroll compressor 100 in the above-described technical solution, on the one hand, the hardness of the outer peripheral wall of the first mating section 41 of the crankshaft 4 is greater than the hardness of the second mating section 42, so that the hardness of the first mating section 41 satisfies the rotation requirement of the motor 5; on the other hand, the hardness of the second mating segment 42 is smaller than that of the first mating segment 41, and machining (e.g., drilling) of the second mating segment 42 is not affected, so that the production cost of the crankshaft 4 is reduced, thereby reducing the cost of the vehicle.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (10)

1. A scroll compressor, comprising:

a motor is arranged in the shell;

the support is arranged on the shell and is provided with a containing cavity for containing the support bearing;

the compression part is positioned at one side of the bracket and comprises a movable disc and a static disc which rotate relatively;

the crankshaft comprises a first matching section and a second matching section, the first matching section is connected with the motor, the crankshaft penetrates through the support to enable the second matching section to be matched with the support bearing, and the second matching section is further provided with a first connecting hole;

the connecting piece is respectively connected with the crankshaft and the compression part, so that the crankshaft drives the movable disc to eccentrically rotate, and the hardness of the peripheral wall of the first matching section is greater than that of the second matching section.

2. The scroll compressor of claim 1, wherein the first mating segment includes a central segment and an outer wrap wrapped around the central segment, the outer wrap defining a peripheral wall of the first mating segment, the outer wrap having a hardness greater than a hardness of the central segment.

3. The scroll compressor of claim 1, wherein the first mating segment has a diameter a and the second mating segment has a diameter B, the ratio of B/a ranging from: 1 to 1.25.

4. A scroll compressor as claimed in any one of claims 1 to 3, wherein the receiving chamber communicates with an oil return passage within the scroll compressor;

the scroll compressor further comprises a thrust component, wherein the thrust component is arranged in the accommodating cavity and is positioned on one side, away from the compression component, of the supporting bearing, the thrust component comprises a thrust part and a sealing part, the thrust part is respectively abutted against the supporting bearing and the support, and the thrust part is provided with the sealing part protruding out of the thrust part and contacting with the inner wall of the accommodating cavity.

5. The scroll compressor of claim 4, wherein a portion of the peripheral wall of the thrust portion projects outwardly to define the seal portion.

6. The scroll compressor of claim 4, wherein the seal portion and the thrust portion are separate pieces.

7. The scroll compressor of claim 6, wherein the outer peripheral wall of the thrust portion is provided with an annular receiving groove, and the sealing portion is provided in the receiving groove and protrudes from the thrust portion to be in contact with an inner wall of the receiving chamber.

8. The scroll compressor of claim 4, wherein at least one end surface of the thrust portion is provided with an oil accommodating groove in an axial direction of the crankshaft.

9. The scroll compressor of claim 8, wherein the oil sump extends to an outer peripheral wall of the thrust portion.

10. A vehicle, characterized by comprising: the scroll compressor of any one of claims 1-9.