CN217381261U - A coupling assembling and compressor for compressor - Google Patents

Abstract

The utility model belongs to the compressor field discloses a coupling assembling and compressor for compressor. The compressor includes: the device comprises a crankshaft, a movable scroll and an eccentric assembly. The crankshaft further comprises a mounting shaft section and a connecting shaft section which are connected, the axis of the mounting shaft section is not overlapped with that of the connecting shaft section, the mounting shaft section is used for connecting the movable scroll and the eccentric assembly, and the eccentric assembly is used for balancing the centrifugal force generated by the movable scroll. The coupling assembling includes: a connecting pin and a connecting sleeve. Two ends of the connecting pin are respectively inserted into pin holes of the eccentric assembly and the crankshaft along the axial direction of the crankshaft; and a connecting sleeve is arranged between the connecting pin and the pin hole of the eccentric component and sleeved outside the connecting pin. The connecting sleeve can generate elastic deformation along the radial direction of the crankshaft to provide supporting force for the eccentric component, so that the eccentric component can not impact the crankshaft through the buffering function of the connecting sleeve in the starting and stopping processes of the scroll compressor, abnormal sound is eliminated, and the performance and the reliability of the compressor are improved.

Description

A coupling assembling and compressor for compressor

Technical Field

The utility model relates to a compressor technical field especially relates to a coupling assembling and compressor for compressor.

Background

Scroll compressors are widely used in various industrial fields due to their small size, light weight, high efficiency, and the like. The scroll plate of the scroll compressor comprises a movable scroll plate and a fixed scroll plate, wherein in the operation process of the scroll compressor, the movable scroll plate moves according to a certain track and forms a closed air suction cavity, a closed compression cavity and an air exhaust cavity with the fixed scroll plate, and the air compression is realized.

In the existing scroll compressor, the eccentric sleeve is driven by the crankshaft to do eccentric motion so as to balance the centrifugal force generated by the rotation of the movable scroll. In order to increase the dead weight of the eccentric sleeve, the eccentric sleeve is usually made of metal materials, and the eccentric sleeve has the tendency of colliding against a crankshaft in the starting and stopping processes of the scroll compressor, so that the metal collides with the metal to generate noise; and the eccentric sleeve has overlarge left and right swing amplitude in the movement process, so that the operation is not stable, and the performance of the scroll compressor is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coupling assembling and compressor for compressor has alleviated the abnormal sound of compressor when starting, has reduced the vibration of compressor body at the operation in-process, has optimized the performance of compressor.

To achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, there is provided a connecting assembly for a compressor including:

the eccentric assembly is provided with a pin hole which is arranged corresponding to the connecting pin, one end of the connecting pin is connected with the connecting shaft section along the axial direction of the crankshaft, and the other end of the connecting pin is inserted into the pin hole;

the connecting sleeve is sleeved on the outer side of the connecting pin and located in the pin hole, and the connecting sleeve can generate elastic deformation so as to provide supporting force for the eccentric assembly along the radial direction of the crankshaft.

Optionally, the connecting sleeve is radially sandwiched between the outer wall of the connecting pin and the inner wall of the pin hole along the crankshaft.

Optionally, the connecting sleeve is made of an elastic material.

Optionally, the outer circumferential surface of the connecting sleeve is provided with a plurality of protrusions.

Optionally, in the axial direction of the crankshaft, the depth of the pin hole is greater than the length of the connecting sleeve.

Optionally, one end of the connecting pin passes through the connecting sleeve and extends out of the connecting sleeve.

Optionally, the connecting pin is threadedly connected with the connecting shaft segment.

Optionally, a gap is provided between the eccentric assembly and the side wall of the connecting shaft section.

Optionally, the connecting pin is provided with a limiting part, and the limiting part is used for preventing the connecting sleeve from coming off from the end part of the connecting pin.

On the other hand, provide a compressor, including the bent axle, move the vortex dish and eccentric subassembly, the bent axle including be located its one end the installation shaft section and with the connecting shaft section that the installation shaft section is connected, the axis of installation shaft section with the axis of connecting shaft section does not coincide, the installation shaft section is used for connecting and moves vortex dish and eccentric subassembly, eccentric subassembly is used for balancing the centrifugal force that moves the vortex dish and produce.

The beneficial effects of the utility model reside in that:

the utility model provides a coupling assembling for compressor utilizes the connecting pin to increase the stability of being connected of eccentric subassembly and bent axle to press from both sides between connecting pin and eccentric subassembly and establish the adapter sleeve, the adapter sleeve can radially produce elastic deformation along the bent axle, in order to provide the holding power to eccentric subassembly, and then can start at scroll compressor, the stopping process, buffer function through the adapter sleeve makes eccentric subassembly can not bump into the bent axle, abnormal sound has not only been eliminated, still help improving the performance and the reliability of compressor.

The utility model provides a scroll compressor through using the coupling assembling that is used for the compressor of the aforesaid, has not only reduced the noise, has still improved scroll compressor's performance and reliability.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the oil pump end of the present invention;

FIG. 3 is a schematic view showing the relationship between the connecting protrusions and the connecting grooves of the present invention;

fig. 4 is a schematic view of the internal structure of the eccentric end of the present invention.

In the figure:

1. a housing; 11. leading in the through hole; 111. a first lead-in hole section; 112. a second lead-in hole section; 113. a transition lead-in hole section; 12. a connecting through hole;

2. a crankshaft; 21. a first shaft section; 22. a second shaft section; 23. mounting a shaft section; 24. connecting the shaft sections; 25. a central through hole;

3. a rotating support;

4. an oil supply device; 41. an oil pump; 411. a connecting projection; 4111. a first side; 4112. a second side; 42. sealing the cover plate;

5. a movable scroll;

6. an eccentric assembly; 61. an installation part; 62. an eccentric portion;

7. a connecting assembly; 71. a connecting pin; 72. connecting sleeves;

8. a first cavity; 81. connecting grooves;

9. a second cavity.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The mode that current compressor often scribbles the grease to the part during through the assembly lubricates the inside moving part of compressor, and the grease of scribbling is very limited, can't stabilize the fuel feeding under the operating mode that lasts, causes the inside moving part of compressor to take place wearing and tearing because of lacking oil then, reduces life.

In order to solve the above problems, the present embodiment provides an oil supply device 4 of a compressor, which is exemplified by a scroll compressor including a housing 1, a crankshaft 2, an orbiting scroll 5, a fixed scroll, and an eccentric assembly 6. Both ends of the crankshaft 2 are respectively rotatably connected to the housing 1 through a rotary support 3, for convenience of description, both ends of the crankshaft 2 are respectively referred to as a first end and a second end, and the rotary support 3 may be a bearing.

Specifically, as shown in fig. 1 and 2, the oil supply device 4 includes an oil pump 41, the housing 1 is provided with a mounting cavity, the oil pump 41 is sleeved outside the first end of the crankshaft 2 and is located in the mounting cavity, the oil pump 41 partitions the mounting cavity into a first cavity 8 and a second cavity 9 which are independent of each other, the first cavity 8 is formed between the outer peripheral surface of the oil pump 41 and the inner wall of the mounting cavity, and the second cavity 9 is formed between the end surface of the oil pump 41 and the inner wall of the mounting cavity; the shell 1 is also provided with a lead-in through hole 11 and a connecting through hole 12, the first cavity 8 is communicated with the outside of the shell 1 through the lead-in through hole 11, and the second cavity 9 is communicated with the first cavity 8 through the connecting through hole 12; the crankshaft 2 is provided with a central through hole 25, and the central through hole 25 is communicated with the second cavity 9; the oil pump 41 is fixedly provided with a connecting protrusion 411, the inner wall of the first cavity 8 is provided with a connecting groove 81, the connecting protrusion 411 is inserted into the connecting groove 81, the outer peripheral wall of the oil pump 41 can be periodically abutted against the inner wall of the first cavity 8 under the driving of the crankshaft 2, so that external oil can sequentially pass through the guide-in through hole 11, the first cavity 8, the connecting through hole 12, the second cavity 9 and the central through hole 25 and flow out from the second end of the crankshaft 2, the moving parts connected to the second end of the crankshaft 2 are lubricated, the abrasion between the moving parts is reduced, and the service life is prolonged.

Specifically, the crankshaft 2 is fixedly connected with the rotor of the motor and rotates together with the rotor, the oil pump 41 moves in the first cavity 8 under the driving of the crankshaft 2, oil is sucked into the first cavity 8 through the lead-in through hole 11, the oil in the first cavity 8 enters the second cavity 9 from the connecting through hole 12 under the driving of the oil pump 41, and then the moving part connected to the second end of the crankshaft 2 is lubricated through the central through hole 25 communicated with the second cavity 9.

Further, as shown in fig. 1, the oil supply device 4 further includes a sealing cover plate 42, the sealing cover plate 42 is disposed in the installation cavity, and is disposed on a different step layer from the oil pump 41, and is located at an end of the first cavity 8 away from the second cavity 9, and is configured to jointly form the first cavity 8 with the outer peripheral surface of the oil pump 41 and the inner circular surface of the installation cavity, so as to ensure the tightness of the first cavity 8, the sealing cover plate 42 is provided with a cover plate through hole, so that oil can lubricate the first end of the crankshaft 2 through the cover plate through hole, but the range of the cover plate through hole is not interfered with the first cavity 8, so that the tightness of the first cavity 8 is ensured, and the oil can flow out through the second cavity 9 and the central through hole 25 on the crankshaft 2.

In this embodiment, the crankshaft 2 includes a first shaft section 21 disposed at the first end and a second shaft section 22 connected to the first shaft section 21, an axis of the second shaft section 22 coincides with a center line of the central through hole 25, and an axis of the first shaft section 21 does not coincide with an axis of the second shaft section 22; therefore, the central through hole 25 is eccentrically formed in the first shaft section 21, so that the thickness of the inner wall of the first shaft section 21 is not uniform. The second shaft section 22 is rotatably connected to the housing 1, specifically, the second shaft section 22 is sleeved with a rotary support 3 such as a bearing, and the first shaft section 21 is sleeved with the oil pump 41. Since the hole wall thickness of the first shaft section 21 is not uniform, the oil pump 41 is driven to make a circular motion when the crankshaft 2 rotates.

Specifically, the oil pump 41 is sleeved on the outer side of the first shaft section 21, the inner diameter of the oil pump 41 is larger than the outer diameter of the first shaft section 21, when the motor drives the crankshaft 2 to rotate, the first shaft section 21 rotates, because the thickness of the inner wall of the first shaft section 21 is inconsistent, the thicker part of the inner wall can push the oil pump 41 to lean against the inner wall of the first cavity 8, and when the first shaft section 21 rotates for one circle, the thicker part of the hole wall can push the oil pump 41 to complete one circle of circular motion along the inner wall of the first cavity 8.

Further, as shown in fig. 1 to 3, in the circumferential direction of the oil pump 41, the width a1 of the coupling groove 81 is larger than the width a2 of the coupling protrusion 411; the depth b1 of the coupling groove 81 is greater than the height b2 of the coupling protrusion 411 in the radial direction of the oil pump 41. Both there is the clearance between spread groove 81 and the connection arch 411, guarantee that oil pump 41 realizes circular motion at first cavity 8, restrict oil pump 41 simultaneously, avoid oil pump 41 to carry out the rotation along with first shaft segment 21.

Further, as shown in fig. 1 to 3, the connecting projection 411 includes a first side 4111 and a second side 4112 that are disposed opposite to each other in the circumferential direction of the oil pump 41, the introduction through hole 11 is disposed near the first side 4111, and the connection through hole 12 is disposed near the second side 4112. The lead-in through hole 11 and the connecting through hole 12 are arranged on two sides of the connecting protrusion 411 and are as close to the connecting protrusion 411 as possible, so that the oil in the first cavity 8 can be pressed into the second cavity 9 through the connecting through hole 12 in the process that the oil pump 41 moves close to the connecting through hole 12; when the oil pump 41 is attached to the inner wall of the first cavity 8 near the connecting through hole 12, a large gap is formed between the oil pump 41 and the introducing through hole 11, so that oil outside the housing 1 can be conveniently sucked into the first cavity 8.

Further, as shown in fig. 1 and 2, the introduction through hole 11 includes a first introduction hole section 111, a second introduction hole section 112, and a transition introduction hole section 113, wherein one end of the first introduction hole section 111 communicates with the outside; one end of the second lead-in hole section 112 is communicated with the first cavity 8; the aperture of the second inlet hole section 112 is smaller than that of the first inlet hole section 111; the transition inlet section 113 is a tapered hole, the large diameter end of which is connected to the first inlet section 111 and the small diameter end of which is connected to the second inlet section 112. Since the first inlet hole section 111 has a larger diameter than the second inlet hole section 112, the external oil can flow into the first chamber 8 more easily, and when the oil is sucked into the first inlet hole section 111 due to the difference in air pressure, the impact is greater, so that the impact is relieved when the oil passes through the tapered transition inlet hole section 113, and the oil flows into the first chamber 8 more smoothly.

Further, the connecting through hole 12 is disposed on the inner wall of the housing 1, and is a through groove passing through the first cavity 8 and the second cavity 9, and is used for guiding the oil in the first cavity 8 into the second cavity 9. Exemplary through slots may be semi-circular or polygonal.

In this embodiment, the crankshaft 2 further includes a mounting shaft section 23 provided at the second end and a connecting shaft section 24 connected to the mounting shaft section 23. The eccentric assembly 6 is sleeved on the mounting shaft section 23, the rotary support member 3 at the second end is sleeved on the outer side of the mounting portion 61 of the eccentric assembly 6, the movable scroll 5 is sleeved on the outer side of the rotary support member 3, and the eccentric portion 62 of the eccentric assembly 6 is located on one side of the crankshaft 2.

The compressor also has the tendency that the eccentric part 62 of the eccentric component 6 can collide against the crankshaft 2 during the starting and stopping processes, so that the metal collides with the metal to generate noise; and the eccentric component 6 has overlarge radial swing amplitude along the crankshaft 2 in the motion process, so that the compressor does not stably run, and the performance of the compressor is influenced. In order to solve the above problem, the present embodiment provides a connecting assembly 7 for a compressor, which is exemplified by a scroll compressor.

As shown in fig. 4, the connecting unit 7 includes a connecting pin 71 and a connecting sleeve 72. One end of the connecting pin 71 is connected with the connecting shaft section 24 of the crankshaft 2, the other end is connected with the eccentric assembly 6, and a pin hole corresponding to the connecting pin 71 is arranged on the eccentric assembly 6 along the axial direction of the crankshaft 2. The connecting sleeve 72 is located between the inner wall of the pin hole and the connecting pin 71 and sleeved outside the connecting pin 71, and the connecting sleeve 72 can generate elastic deformation to provide a supporting force for the eccentric assembly 6 along the radial direction of the crankshaft 2. Like this when eccentric subassembly 6 bumps into bent axle 2, elastic deformation takes place for adapter sleeve 72 to cushion eccentric subassembly 6, thereby radial flexible compensation is carried out to eccentric subassembly 6 through the radial elastic deformation of adapter sleeve 72, thereby guarantees to move vortex dish 5 and all has suitable spiral shell radial contact force in high low-speed full rotational speed cycle, guarantees to move vortex dish 5 on theoretical exact mesh orbit.

Further, the connecting sleeve 72 is made of an elastic material, and for example, nylon or rubber may be used. So that the connecting sleeve 72 can generate elastic deformation when stressed, and further play a role of buffering.

More closely, a plurality of bulges are distributed on the peripheral surface of the connecting sleeve 72, so that the buffering effect of the connecting sleeve 72 is enhanced. Preferably, a plurality of protrusions are uniformly distributed on the outer circumferential surface of the connection sleeve 72.

Further, in the axial direction of the crankshaft 2, the depth of the pin hole is greater than the length of the connecting sleeve 72, so that a deformation reserved space is generated for the connecting sleeve 72, a certain assembly room is reserved for the connecting sleeve 72 during assembly, and the problem that assembly cannot be performed due to the fact that the length of the connecting sleeve 72 is greater than the depth of the pin hole is avoided.

Further, one end of the connecting pin 71 passes through the connecting sleeve 72 and protrudes outside the connecting sleeve 72. One end of the connecting pin 71 is connected with the connecting shaft section 24 of the crankshaft 2, the other end is outside the connecting shaft section 24 of the crankshaft 2, and the end positioned outside the connecting shaft section 24 of the crankshaft 2 passes through the connecting sleeve 72 and extends out of the connecting sleeve 72, so that even if the connecting sleeve 72 is deformed to be long, the connecting pin 71 can support the connecting sleeve 72, and the problem that the connecting sleeve 72 falls off from the connecting pin 71 in the moving process can be prevented.

Furthermore, the connecting pin 71 is screwed to the connecting shaft section 24, an external thread is provided at the end of the connecting pin 71 connected to the connecting shaft section 24, and a threaded hole matched with the connecting shaft section 24 is provided on the connecting shaft section 24, so that the connecting pin 71 can be conveniently fixed on the connecting shaft section 24 of the crankshaft 2 through screwing, and adjustment is facilitated.

Further, a gap is provided between the eccentric assembly 6 and the side wall of the connecting shaft segment 24. Since the eccentric assembly 6 tends to collide against the crankshaft 2 during the start and stop of the compressor, a gap is left between the eccentric assembly 6 and the sidewall of the connecting shaft segment 24 to increase a buffer distance, thereby preventing the eccentric assembly 6 from colliding against the crankshaft 2.

Further, the connecting pin 71 is provided with a stopper portion for preventing the connecting sleeve 72 from coming off from the end of the connecting pin 71. In the axial direction of the crankshaft 2, a gap is provided between the connecting shaft section 24 and the eccentric assembly 6, so that oil in the central through hole 25 can lubricate the moving parts of the second end through the gap.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A connection assembly (7) for a compressor, the compressor comprising:

the crankshaft (2) comprises a mounting shaft section (23) and a connecting shaft section (24), wherein the mounting shaft section (23) is located at one end of the crankshaft (2), the axis of the mounting shaft section (23) is not coincident with the axis of the connecting shaft section (24), the mounting shaft section (23) is used for connecting the movable scroll (5) and the eccentric assembly (6), and the eccentric assembly (6) is used for balancing the centrifugal force generated by the movable scroll (5);

characterized in that said connection assembly (7) comprises:

the eccentric assembly (6) is provided with a pin hole which is arranged corresponding to the connecting pin (71), one end of the connecting pin (71) is connected with the connecting shaft section (24) along the axial direction of the crankshaft (2), and the other end of the connecting pin (71) is inserted into the pin hole;

the connecting sleeve (72) is sleeved on the outer side of the connecting pin (71) and located in the pin hole, and the connecting sleeve (72) can generate elastic deformation so as to provide supporting force for the eccentric component (6) along the radial direction of the crankshaft (2).

2. The connecting assembly (7) according to claim 1, characterized in that the connecting sleeve (72) is radially interposed between the outer wall of the connecting pin (71) and the inner wall of the pin bore along the crankshaft (2).

3. The connecting assembly (7) according to claim 1, characterized in that the connecting sleeve (72) is made of an elastic material.

4. A connecting assembly (7) according to claim 3, characterised in that the connecting sleeve (72) is provided with a plurality of protrusions on its outer circumference.

5. A connecting assembly (7) according to claim 1, characterized in that the depth of the pin hole in the axial direction of the crankshaft (2) is greater than the length of the connecting sleeve (72).

6. The connecting assembly (7) according to claim 1, characterized in that one end of the connecting pin (71) passes through the connecting sleeve (72) and protrudes outside the connecting sleeve (72).

7. The connecting assembly (7) according to claim 1, characterized in that the connecting pin (71) is screwed with the connecting shaft section (24).

8. A connecting assembly (7) according to claim 1, characterized in that a gap is provided between the eccentric assembly (6) and the side wall of the connecting shaft section (24).

9. The connecting assembly (7) according to claim 1, characterized in that the connecting pin (71) is provided with a stopper for preventing the connecting sleeve (72) from coming out of the end of the connecting pin (71).

10. Compressor, characterized in that it comprises a connection assembly (7) for a compressor according to any one of claims 1 to 9.

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