CN210111729U - Rotor assembly structure, motor and compressor - Google Patents

Abstract

The utility model provides a rotor assembly structure, a motor and a compressor, relates to the technical field of refrigeration devices, and solves the technical problem that the conventional rotor assembly structure in the prior art makes the cooling effect of the refrigerant relatively poor on the rotor assembly. The rotor assembly structure includes a rotor iron core and a flow hole, wherein the rotor iron core is provided with a flow hole and the flow hole is in a spiral shape, and part of the refrigerant can flow from the lower part of the rotor iron core along the flow hole. to the top of the rotor core. The utility model is used for reducing the temperature and the oil discharge of the compressor.

Description

Rotor assembly structure, motor and compressor

technical field

The utility model relates to the technical field of refrigeration devices, in particular to a rotor assembly structure, a motor provided with the rotor assembly structure and a compressor provided with the rotor assembly structure.

Background technique

Rotary compressor, its motor directly drives the rotary piston to rotate to complete the compression of refrigerant vapor. The structure of the compressor is as follows: the motor stator is fixed on the compressor casing, and the motor rotor is fixed on the crankshaft. After the motor of the compressor is energized, the rotor rotates, which in turn drives the crankshaft to rotate, and the crankshaft drives the piston in the cylinder to rotate to compress the air in the cylinder. Refrigerant and compressed refrigerant can be discharged through the exhaust hole on the bearing and then enter the muffler, and then discharged from the exhaust port of the muffler into the space between the motor and the compressor casing, and finally discharged from the exhaust pipe of the compressor.

The applicant found that the prior art has at least the following technical problems:

When the refrigerant (including refrigerated oil) flows from the bottom of the motor to the top of the motor, the gap between the motor and the casing is used as the main circulation channel; when the rotor assembly in the air-conditioning compressor is working, if the temperature of the rotor is too high, it may be It will lead to the demagnetization of the rotor magnet and reduce the performance of the motor. Since there is little refrigerant (including refrigeration oil) flowing to the top of the motor through the rotor, the cooling effect of the refrigerant on the rotor is relatively poor.

Utility model content

The purpose of the present invention is to provide a rotor assembly structure, a motor and a compressor, which solve the technical problem that the conventional rotor assembly structure in the prior art makes the cooling effect of the refrigerant relatively poor on the rotor assembly. The technical effects that can be produced by the preferred technical solutions among the technical solutions provided by the present invention are detailed in the following descriptions.

To achieve the above object, the utility model provides the following technical solutions:

The utility model provides a rotor assembly structure, comprising a rotor iron core and a circulation hole, wherein the rotor iron core is provided with a circulation hole and the circulation hole is in a helical shape, and part of the refrigerant can pass through the circulation hole along the circulation hole. The lower part of the rotor iron core flows to the upper part of the rotor iron core.

Further, the rotor iron core includes rotor punching pieces, and punching piece circulation holes are arranged on the rotor punching pieces. When the rotor punching pieces are superimposed to form the rotor iron core, all the punching piece circulation holes form the flow hole.

Further, the rotor assembly structure further includes an oil baffle cap, the oil baffle cap is arranged at one end of the rotor iron core, and the refrigerant flowing out of the flow hole can flow to the oil baffle cap and pass through the oil baffle cap. The notch on the oil deflector cap flows to the side facing away from the compressor discharge port.

Further, the oil blocking cap includes a connecting portion and a first oil blocking portion, one end of the connecting portion extends into the first oil blocking portion, and the other end is detachably connected to the balance block of the rotor assembly structure, so The notch exists between the first oil blocking part and the connecting part, and the refrigerant flowing out of the flow hole can flow to the first oil blocking part and pass through the notch and the connecting part and the connecting part. A gap between the first oil retaining portions flows out of the oil retaining cap.

Further, the outer contour of the first oil blocking portion is annular, and the longitudinal cross-sectional shape of the first oil blocking portion is arc-shaped.

Further, the outer contour of the connecting portion is annular, the connecting portion extends into the upper end edge of the first oil blocking portion and is connected to the first oil blocking portion, and the upper end edge of the connecting portion is connected to the first oil blocking portion. Opened in the notch, an oil guiding gap communicated with the notch is formed between the outer side surface of the connecting portion and the inner side surface of the first oil blocking portion.

Further, the inner side of the first oil blocking portion includes a top oil blocking surface and a side oil blocking surface connected with the top oil blocking surface, and the top oil blocking surface and the side oil blocking surface are both in the shape of a top oil blocking surface. Ring shape, the longitudinal section shape of the top oil blocking surface is arc and the top oil blocking surface is located above the connecting part, the longitudinal section shape of the side oil blocking surface is straight and the side oil blocking surface is straight The surface forms the outer side surface of the oil guide gap.

Further, the outer side surface of the connecting portion used to form the oil guiding gap intersects with the inner side surface of the connecting portion to form the upper end edge of the connecting portion.

Further, the notches are evenly spaced along the circumferential direction of the connecting portion.

Further, the inner surface of the connecting portion is provided with a thread for connecting with the balance weight.

Further, the first oil blocking portion is provided with a second oil blocking portion for restricting the direction of the refrigeration oil on one end of the first oil blocking portion around the outer side of the connecting portion, and the refrigeration oil can pass through the second oil blocking portion and the The gap between the outer sides of the connection portion flows out.

Further, the second oil blocking portion is an annular structure, the second oil blocking portion includes an intermediate baffle portion, the intermediate baffle portion is a cylindrical structure, and one end of the intermediate baffle portion passes through an arc. The baffle part is connected with the first oil blocking part, and the other end extends toward the direction close to the connecting part to form an annular baffle closing part.

Further, the rotor assembly structure further includes an oil blocking cap and a balancing block, the balancing block is connected with the rotor iron core, and the oil blocking cap is threadedly connected with the balancing block.

Further, the balance block includes a threaded connection part and a balance part, the threaded connection part connects the rotor core and the balance part, the threaded connection part is an annular structure and the circumferential direction of the threaded connection part is The outer surface is provided with threads.

A motor includes the rotor assembly structure.

A compressor includes the rotor assembly structure.

The utility model provides a rotor assembly structure, the rotor iron core is provided with a circulation hole and the circulation hole is in a spiral shape, and part of the refrigerant can flow from the lower part of the rotor iron core to the upper part of the rotor iron core along the circulation hole. Therefore, it can be realized that the cooling oil flows in the circulation hole to achieve the effect of cooling the rotor core, thereby solving the technical problem that the traditional rotor assembly structure in the prior art makes the cooling effect of the refrigerant relatively poor on the rotor assembly. .

The preferred technical solution of the present utility model can at least produce the following technical effects:

The rotor assembly structure also includes an oil blocking cap. The oil blocking cap is arranged at one end of the rotor iron core. The oil blocking cap can effectively prevent a large amount of refrigeration oil from flowing out of the compressor through the compressor exhaust port together with the refrigerant, so as to prevent the oil content of the compressor from being reduced;

One end of the oil blocking portion which is arranged around the outer side of the connecting portion is provided with an oil blocking portion for restricting the direction of the refrigeration oil, and the oil blocking portion can effectively prevent the oil from spilling at will.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a flow hole on a rotor core provided by an embodiment of the present invention;

2 is a schematic structural diagram of a rotor punch provided by an embodiment of the present invention;

3 is a schematic cross-sectional view of a rotor assembly structure provided by an embodiment of the present invention;

4 is a schematic cross-sectional structure diagram of an oil blocking cap provided by an embodiment of the present invention;

5 is a schematic structural diagram of a notch on an oil blocking cap provided by an embodiment of the present invention;

6 is a schematic structural diagram of an oil blocking cap provided by an embodiment of the present invention;

7 is a schematic cross-sectional view of a balance block provided by an embodiment of the present invention.

In the figure 1- rotor core; 11- rotor punching piece; 12- punching piece circulation hole; 2- circulation hole; 3- connecting part; 4- first oil blocking part; 41- top oil blocking surface; 42- side part Oil blocking surface; 43-Avoidance part; 5-Slot; 6-Oil guide clearance; 7-Balance block; 71-Threaded connection part; 72-Balance part; 8-Second oil blocking part; 81-Intermediate baffle part ; 82-Arc baffle part; 83-Baffle closing part.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

1-7, the present utility model provides a rotor assembly structure, including a rotor iron core 1 and a flow hole 2, wherein the rotor iron core 1 is provided with a flow hole 2 and the flow hole 2 is in a spiral shape, part of the refrigerant It can flow from below the rotor iron core 1 to above the rotor iron core 1 along the flow hole 2 . The rotor assembly structure provided by the utility model can be installed in the compressor. When the compressor is running, the refrigerant will flow in the flow hole 2. Since the refrigerant contains refrigerating oil, the flow of the refrigerating oil in the flow hole 2 can be realized. The effect of cooling the rotor core 1 has been achieved, and it has a certain preventive effect on the demagnetization of the magnetic steel caused by the high temperature of the rotor core 1; flow frequency, so as to achieve the cooling effect. Referring to FIG. 1 , the circulation hole 2 may be in a spiral shape, and the number of spiral turns may be multiple. In addition, the flow hole 2 also has the effect of reducing the noise of the motor to a certain extent.

As an optional implementation of the embodiment of the present invention, referring to FIG. 1 to FIG. 3 , the rotor core 1 includes a rotor punch 11, and the rotor punch 11 is provided with punch flow holes 12. When the rotor punch 11 is superimposed to form a rotor When the iron core 1 is used, the punching holes 12 on the two adjacent rotor punches 11 are staggered from each other, so that the stacked punching holes 12 finally form the circulation holes 2 .

As an optional implementation of the embodiment of the present invention, referring to FIGS. 3 to 6 , the rotor assembly structure further includes an oil blocking cap. The oil blocking cap is arranged at one end of the rotor iron core 1, and the refrigerant flowing out of the circulation hole 2 can flow to the direction of the The oil baffle cap can flow to the side away from the compressor discharge port through the groove 5 on the oil baffle cap. The oil blocking cap can effectively prevent a large amount of refrigeration oil from flowing out of the compressor through the compressor exhaust port together with the refrigerant, so as to prevent the oil content of the compressor from being reduced.

As an optional implementation of the embodiment of the present invention, the structure of the oil blocking cap may be as follows: Referring to FIG. 3 to FIG. 6 , the oil blocking cap includes a connecting part 3 and a first oil blocking part 4, and one end of the connecting part 3 extends into the first oil blocking part 4. An oil blocking part 4 and the other end are detachably connected to the balance block 7 of the rotor assembly structure. There is a slot 5 between the first oil blocking part 4 and the connecting part 3, and the refrigerant flowing out of the flow hole 2 can flow to the first block The oil part 4 can also flow out of the oil blocking cap through the notch 5 and the gap between the connecting part 3 and the first oil blocking part 4 . Due to the spiral structure of the flow hole 2, when the refrigeration oil is thrown onto the first oil blocking part 4 by the principle of inertia, a rotary motion will be generated, which can cool the refrigeration oil in this process; the refrigeration oil can pass through the notch 5 and the gap between the connecting part 3 and the first oil blocking part 4 flow back to the compressor to perform secondary cooling of the whole machine.

As an optional implementation of the embodiment of the present invention, referring to FIGS. 3-6 , the outer contour of the first oil blocking portion 4 may be annular and the longitudinal cross-sectional shape of the first oil blocking portion 4 may be arc-shaped; The outer contour of 3 is annular, the upper end edge of the connecting portion 3 extending into the first oil blocking portion 4 is connected with the first oil blocking portion 4, and the upper end edge of the connecting portion 3 is provided with a notch 5, and the notch 5 can be used. Evenly spaced along the circumferential direction of the connecting part 3, the number of the notches 5 can be 6, and between the outer side surface of the connecting part 3 and the inner side surface of the first oil blocking part 4 is formed a connection with the notches 5. Oil guide clearance 6. In addition, referring to FIG. 5 , the first oil blocking portion 4 may also be provided with an escape portion 43 to match the notch 5 on the connecting portion 3 .

As an optional implementation of the embodiment of the present invention, the specific structure of the first oil blocking portion 4 may be as follows: Referring to FIG. 4 , the inner side of the first oil blocking portion 4 includes a top oil blocking surface 41 and a top oil blocking surface 41 The connected side oil retaining surfaces 42 , the top oil retaining surface 41 and the side oil retaining surfaces 42 are all annular, the longitudinal cross-sectional shape of the top oil retaining surface 41 is an arc, and the top oil retaining surface 41 is located above the connecting portion 3 . , when the refrigeration oil is thrown onto the top oil blocking surface 41 by the principle of inertia, a rotary motion will occur. The longitudinal cross-sectional shape of the side oil blocking surface 42 is a straight line, and the side oil blocking surface 42 forms the outer side of the oil guide gap 6 .

As an optional implementation of the embodiment of the present invention, the specific structure of the connecting portion 3 may be as follows: Referring to FIG. 4 , the outer side surface of the connecting portion 3 used to form the oil guide gap 6 intersects with the inner side surface of the connecting portion 3 to form the connecting portion. 3 on the upper edge. Referring to FIG. 4 , the longitudinal section of the outer surface of the connecting portion 3 for forming the oil guiding gap 6 may be parallel to the longitudinal section of the side oil blocking surface 42 .

As an optional implementation of the embodiment of the present invention, the first oil blocking part 4 is provided with a second oil blocking part 8 around one end of the outer side of the connecting part 3 to limit the direction of the refrigeration oil, and the refrigeration oil can pass through the second oil blocking part 8. The gap between the oil blocking portion 8 and the outer surface of the connecting portion 3 flows out. When the refrigeration oil is returned to the compressor, the second oil blocking part 8 can effectively prevent the oil from spilling out. The specific shape of the second oil blocking part 8 can be as follows: the second oil blocking part 8 is an annular structure, and the second oil blocking part 8 includes an intermediate baffle part 81, the intermediate baffle part 81 is a cylindrical structure and one end of the intermediate baffle part 81 is connected with the first oil blocking part 4 through the arc baffle part 82, and the other end is close to the connecting part 3. A ring-shaped baffle closing portion 83 is formed by extending in the direction of the baffle, and the refrigeration oil can flow out through the gap between the baffle closing portion 83 and the outer surface of the connecting portion 3 .

As an optional implementation of the embodiment of the present invention, referring to FIGS. 3-5 and 7 , the rotor assembly structure further includes an oil blocking cap and a balance block 7 . The balance block 7 is connected to the rotor core 1 , and the balance block 7 is connected to the The rotor core 1 can be connected by riveting, and the oil blocking cap is threadedly connected to the balance block 7; the balance block 7 includes a threaded connection part 71 and a balance part 72, and the threaded connection part 71 connects the rotor core 1 and the balance part 72, and the threaded connection part 71 is an annular structure and the outer peripheral surface of the threaded connection portion 71 is provided with threads, the inner surface of the oil cap connection portion 3 is provided with threads for connecting with the balance block 7, and the threaded connection portion 71 is connected to the connection portion 71. 3. Threaded connection; the balance part 72 can be a semi-ring structure.

A motor is installed with the rotor assembly structure provided by the utility model.

A compressor is installed with the rotor assembly structure provided by the utility model, so as to effectively reduce the oil discharge of the compressor.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (16)

1. A rotor assembly structure, characterized by comprising a rotor core (1) and flow holes (2), wherein,

the rotor core (1) is provided with circulation holes (2), the circulation holes (2) are spiral, and part of refrigerant can flow from the lower part of the rotor core (1) to the upper part of the rotor core (1) along the circulation holes (2).

2. The rotor assembly structure according to claim 1, characterized in that the rotor core (1) comprises a rotor punching (11), punching flow holes (12) are arranged on the rotor punching (11), and when the rotor punching (11) is overlapped to form the rotor core (1), all the punching flow holes (12) form the flow holes (2).

3. The structure of the rotor assembly according to claim 1, further comprising an oil blocking cap disposed at one end of the rotor core (1), wherein the refrigerant flowing out of the flow hole (2) can flow to the oil blocking cap and can flow to a side away from a compressor discharge port through a notch (5) formed in the oil blocking cap.

4. The rotor assembly structure according to claim 3, wherein the oil blocking cap comprises a connecting portion (3) and a first oil blocking portion (4), one end of the connecting portion (3) extends into the first oil blocking portion (4), and the other end of the connecting portion is detachably connected with a balance block (7) of the rotor assembly structure, the notch (5) is formed between the first oil blocking portion (4) and the connecting portion (3), and the refrigerant flowing out of the circulation hole (2) can flow to the first oil blocking portion (4) and can flow out of the oil blocking cap through the notch (5) and a gap between the connecting portion (3) and the first oil blocking portion (4).

5. The rotor assembly structure according to claim 4, wherein the outer contour of the first oil blocking portion (4) is circular ring-shaped and the longitudinal sectional shape of the first oil blocking portion (4) is arc-shaped.

6. The rotor assembly structure according to claim 4 or 5, wherein the outer contour of the connecting portion (3) is circular, the connecting portion (3) extends into the upper end edge of the first oil blocking portion (4) to be connected with the first oil blocking portion (4), the upper end edge of the connecting portion (3) is provided with the notch (5), and an oil guiding gap (6) communicated with the notch (5) is formed between the outer side surface of the connecting portion (3) and the inner side surface of the first oil blocking portion (4).

7. The rotor assembly structure according to claim 6, wherein the inner side surface of the first oil blocking portion (4) comprises a top oil blocking surface (41) and a side oil blocking surface (42) connected with the top oil blocking surface (41), the top oil blocking surface (41) and the side oil blocking surface (42) are both annular, the longitudinal cross-sectional shape of the top oil blocking surface (41) is an arc line, the top oil blocking surface (41) is located above the connecting portion (3), the longitudinal cross-sectional shape of the side oil blocking surface (42) is a straight line, and the side oil blocking surface (42) forms the outer side surface of the oil guiding gap (6).

8. A rotor assembly structure according to claim 7, characterized in that the outer side of the connecting part (3) for forming the oil guiding gap (6) intersects the inner side of the connecting part (3) to form the upper end edge of the connecting part (3).

9. The rotor assembly structure according to claim 6, characterized in that the notches (5) are evenly spaced along the circumferential direction of the connection portion (3).

10. A rotor assembly structure according to claim 6, characterised in that the inner side of the connecting portion (3) is provided with a thread for connection with the counterweight (7).

11. The rotor assembly structure according to claim 4, wherein the first oil blocking portion (4) is provided with a second oil blocking portion (8) for limiting the direction of the refrigerant oil around one end of the connecting portion (3), and the refrigerant oil can flow out through a gap between the second oil blocking portion (8) and the outer side surface of the connecting portion (3).

12. The rotor assembly structure according to claim 11, wherein the second oil blocking portion (8) is a ring-shaped structure, the second oil blocking portion (8) comprises an intermediate baffle portion (81), the intermediate baffle portion (81) is a cylindrical structure, one end of the intermediate baffle portion (81) is connected with the first oil blocking portion (4) through an arc-shaped baffle portion (82), and the other end extends in a direction close to the connecting portion (3) to form a ring-shaped baffle receiving portion (83).

13. The rotor assembly structure according to claim 1, 4 or 10, further comprising an oil cap and a balance weight (7), wherein the balance weight (7) is connected with the rotor core (1), and the oil cap is in threaded connection with the balance weight (7).

14. The rotor assembly structure according to claim 13, wherein the balance weight (7) comprises a threaded connection portion (71) and a balance portion (72), the threaded connection portion (71) connects the rotor core (1) and the balance portion (72), the threaded connection portion (71) is of an annular structure, and a thread is arranged on a circumferential outer side surface of the threaded connection portion (71).

15. An electrical machine comprising a rotor assembly structure as claimed in any one of claims 1 to 14.

16. A compressor comprising a rotor assembly structure as claimed in any one of claims 1 to 14.

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