CN214543966U

CN214543966U - Counterweight assembly and compressor structure

Info

Publication number: CN214543966U
Application number: CN202120689183.8U
Authority: CN
Inventors: 戴一郎; 何建荣; 罗罡; 刘明星
Original assignee: TCL Rechi Huizhou Refrigeration Equipment Co Ltd
Current assignee: TCL Rechi Huizhou Refrigeration Equipment Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-10-29
Anticipated expiration: 2031-04-02

Abstract

The utility model discloses a counter weight subassembly and compressor structure, establish rotor and balancing piece at bent epaxial including bent axle, cover, the balancing piece sets up the top and/or the below at the rotor, the balancing piece is provided with the cylinder base of through-hole including the centre to and install the entity balancing piece on the base terminal surface, be equipped with the clearance under the base between terminal surface and the rotor. The utility model has the advantages that the clearance is arranged between the balance block and the rotor, thereby avoiding the magnetic leakage of the rotor and reducing the cost; the annular base can avoid stirring loss and improve energy efficiency; the whole structure is easy to assemble, the rotational inertia of the rotor can be improved, the vibration generated by the work of the compressor is reduced, and the efficiency of the compressor is improved.

Description

Counterweight assembly and compressor structure

Technical Field

The utility model relates to a compressor field, specific theory especially relates to a counterweight assembly and compressor structure.

Background

The bent axle of vertical type rotary compressor is driven by the motor to borrow and drive the ring by eccentric portion and compress refrigerant gas, eccentric portion produces centrifugal force when rotatory around the bent axle center, and the vibration that causes the compressor is big, sets up the balancing piece on motor rotor, and the centrifugal force that the balancing piece produced balances with the centrifugal force that pump body eccentric portion produced, reduces compressor vibration.

The existing rotor is provided with a refrigerant circulation hole, part of exhaust gas of a pump body flows above the rotor through the refrigerant circulation hole, and due to the shape limitation of a balance block, the rotor generates stirring action on a refrigerant when rotating at a high speed, so that stirring loss is generated, the load torque of the rotor is increased, and the efficiency of the compressor is reduced. In addition, the direct current variable frequency motor rotor has small moment of inertia, the fluctuation of the rotating speed of the compressor is large, the moment of inertia of the rotor is increased by adding a counterweight ring on the rotor in the prior art, and the counterweight needs to be made of expensive materials with low magnetic permeability, such as stainless steel materials, so that the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the existing counterweight component structure can generate stirring loss and the counterweight is high in cost, the utility model provides a counterweight component and compressor structure.

The utility model provides a counter weight subassembly, includes the bent axle, overlaps and establish rotor and balancing piece on the bent axle, the balancing piece sets up in the top and/or the below of rotor, the balancing piece is provided with the cylinder base of through-hole including the centre to and install the entity balancing piece on the terminal surface of base, be equipped with the clearance under the base between terminal surface and the rotor, be favorable to improving the efficiency, reduce cost.

Optionally, the base edge is provided with a circular side wall surface, a cavity is formed between the side wall surface and the base, and the solid balance block is installed in the cavity, so that stirring loss can be avoided, and the efficiency of the compressor is improved.

Optionally, the edge of the base is provided with a circular arc-shaped side wall surface, and two ends of the side wall surface are connected with the outer surface of the solid balance block to form a circular closed structure, so that stirring loss can be avoided, and the efficiency of the compressor is improved.

Optionally, the sidewall surface is flush with an end surface of the solid balance weight.

Optionally, a limiting column is arranged on the other end face, opposite to the solid balance block, of the base, the limiting column is sleeved on the crankshaft, the limiting column is placed on the end face of the rotor, and the diameter of the limiting column is smaller than the diameter or the length of the rotor.

Optionally, the solid balance block is not in contact with the crankshaft, and the shortest distance between the solid balance block and the through hole is greater than zero, so that noise is reduced, and the efficiency of the compressor is improved.

Optionally, the gap is above 1 mm.

Optionally, the balance weight is matched and fixed with the crankshaft hot sleeve through the through hole, and the installation is convenient. Optionally, the entity balancing block and the base are of a detachable installation structure or an integrally formed structure, and universality can be improved.

Optionally, the rotor is provided with refrigerant holes, the refrigerant holes are through holes longitudinally penetrating through the rotor, and the refrigerant holes are distributed outside the rotor area contacting with the lower end of the limiting column.

A compressor structure comprises the counterweight component.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a counterweight assembly and a compressor structure, a gap is arranged between a balancing block and a rotor, the magnetic leakage of the rotor can be avoided, and the cost is reduced; the annular base can avoid stirring loss and improve energy efficiency; the whole structure is easy to assemble, the rotational inertia of the rotor can be improved, the vibration generated by the work of the compressor is reduced, and the efficiency of the compressor is improved.

Drawings

Fig. 1 is a first schematic perspective view of a counterweight assembly according to an embodiment of the present disclosure;

FIG. 2 is a first schematic perspective view of a balance block according to an embodiment of the present disclosure;

fig. 3 is a schematic perspective view of a counterweight assembly according to an embodiment of the present application;

fig. 4 is a schematic perspective view of a second balance weight according to an embodiment of the present disclosure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to the accompanying drawings 1-4, a counterweight assembly comprises a crankshaft 1, a rotor 2 and a counterweight 3, wherein the rotor 2 and the counterweight 3 are sleeved on the crankshaft 1, the counterweight 3 is arranged above and/or below the rotor 2, the counterweight 3 comprises a cylindrical base 10 with a through hole 4 in the middle and an entity counterweight 5 arranged on the end surface of the base 10, and a gap 6 is arranged between the lower end surface of the base 10 and the rotor 2.

The base 10 of the balance block 3 is a circular ring body, so that the stirring loss of the balance block 3 can be avoided, and the energy efficiency is improved; the base 10 of balancing piece 3 and the magnet part in the rotor 2 do not contact, avoid rotor 2 magnetic leakage, and cheaper iron material, for example casting material, cost is reduced can be chooseed for use to balancing piece 3. The rotor 2 is provided with a refrigerant hole 9, and due to the structure of the annular base 10, the refrigerant discharged from the refrigerant hole 9 cannot be stirred during rotation, so that the efficiency of the compressor can be improved.

In some embodiments, the gap 6 is greater than 1mm, the balance weight 3 is fixed with the crankshaft 1 through the through hole 4 in a shrink fit manner, the solid balance weight 5 and the base 10 are of a detachable mounting structure or an integrally formed structure, and the solid balance weight 5 can be detachably mounted with the base 10 through rivets or bolts, so that the universality and the practicability of the counterweight assembly are improved. The diameter of the base 10 is smaller than or equal to the diameter of the rotor 2, i.e. the periphery of the counterweight 3 does not exceed the outer surface of the rotor 2.

In some embodiments, and with particular reference to FIGS. 3-4, the base 10 has rounded side walls 7 at the edges thereof, the side walls 7 extending upwardly from the base 10 and forming a cavity with the base 10, and the physical balance 5 is mounted in the cavity. In other embodiments, the edge of the base 10 is provided with a circular arc-shaped side wall surface 7, two ends of the side wall surface 7 are connected with the outer surface of the solid balance weight 5 to form a circular closed structure, specifically, the side wall surface 7 extends upwards from the edge of the base 10, and a cavity is formed between the outer surface of the side wall surface 7, the balance weight 3 and the base 10. The side wall surface 7 is flush with the end surface of the solid weight 5, i.e., the thickness of the solid weight 5 is equal to the height of the side wall surface 7. It will be appreciated that the side wall surface 7 and the base 10 may be formed as a single piece, and the weight 3, the side wall surface 7 and the base 10 may also be formed as a single piece.

The other end face, opposite to the solid balance block 5, of the base 10 is provided with a limiting column 8, the limiting column 8 is sleeved on the crankshaft 1, the limiting column 8 is placed on the end face of the rotor 2, and the diameter of the limiting column 8 is smaller than that or the length of the rotor 2. The rotor 2 is provided with a refrigerant hole 9, the refrigerant hole 9 is a through hole longitudinally penetrating through the rotor 2, the refrigerant hole 9 is distributed outside the rotor area contacting with the lower end of the limiting column 8, namely, the limiting column 8 cannot block the refrigerant hole 9. The limiting column 8 is used for limiting the position of the balance block 3 on the crankshaft 1, so that assembly is facilitated, the distance between the base 10 and the rotor 2 can be adjusted by setting the limiting column 8 with different heights, the size of the gap 6 can be adjusted, and the limiting column 8 and the base 10 can be of an integrally formed structure.

In some embodiments, the solid balance weight 5 is not in contact with the crankshaft 1, and the shortest distance between the solid balance weight 5 and the through hole 4 is greater than zero, which is beneficial to improving the rotation efficiency of the rotor 2. The horizontal cross section of the solid balance weight 5 is in a conventional shape such as circular arc, crescent moon shape, etc., and is not limited.

The utility model also discloses a compressor structure, including foretell counterweight assembly, can reduce the vibration that the compressor during operation produced, improve the efficiency, reduce cost.

The utility model provides a counterweight assembly and a compressor structure, a gap is arranged between a balancing block and a rotor, the magnetic leakage of the rotor can be avoided, and the cost is reduced; the annular base can avoid stirring loss and improve energy efficiency; the whole structure is easy to assemble, the rotational inertia of the rotor can be improved, the vibration generated by the work of the compressor is reduced, and the efficiency of the compressor is improved.

In the present invention, unless otherwise expressly stated or limited, the terms "provided", "disposed", "connected", and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a counter weight subassembly, includes bent axle (1), overlaps rotor (2) and balancing piece (3) of establishing on bent axle (1), its characterized in that: balance weight (3) set up in the top and/or the below of rotor (2), balance weight (3) are provided with cylinder base (10) of through-hole (4) including the centre to and install entity balance weight (5) on base (10) terminal surface, be equipped with clearance (6) under base (10) between terminal surface and rotor (2).

2. A counterweight assembly in accordance with claim 1 wherein: the edge of the base (10) is provided with a circular side wall surface (7), a cavity is formed between the side wall surface (7) and the base (10), and the entity balance block (5) is arranged in the cavity.

3. A counterweight assembly in accordance with claim 1 wherein: the edge of the base (10) is provided with a circular arc-shaped side wall surface (7), and two ends of the side wall surface (7) are connected with the outer surface of the solid balance block (5) to form a circular closed structure.

4. A counterweight assembly according to claim 2 or 3, wherein: the side wall surface (7) is flush with the end surface of the solid balance block (5).

5. A counterweight assembly in accordance with claim 1 wherein: the motor rotor is characterized in that a limiting column (8) is arranged on the base (10) relative to the other end face of the solid balance block (5), the limiting column (8) is sleeved on the crankshaft (1), the limiting column (8) is placed on the end face of the rotor (2), and the diameter of the limiting column (8) is smaller than that or the length of the rotor (2).

6. A counterweight assembly according to any one of claims 1, 2, 3 or 5 wherein: the solid balance weight (5) is not in contact with the crankshaft (1), and the shortest distance between the solid balance weight (5) and the through hole (4) is greater than zero.

7. A counterweight assembly in accordance with claim 1 wherein: the gap (6) is more than 1 mm.

8. A counterweight assembly in accordance with claim 1 wherein: the balance weight (3) is matched and fixed with the crankshaft (1) through the through hole (4).

9. A counterweight assembly in accordance with claim 1 wherein: the solid balance block (5) and the base (10) are of a detachable installation structure or an integrated structure.

10. A counterweight assembly in accordance with claim 5 wherein: the rotor (2) is provided with refrigerant holes (9), the refrigerant holes (9) are through holes longitudinally penetrating through the rotor (2), and the refrigerant holes (9) are distributed outside the rotor area in contact with the lower end of the limiting column (8).

11. A compressor structure, characterized in that: comprising a counterweight assembly according to any one of claims 1 to 10.