CN219549130U - Magnetism isolating sheet and compressor - Google Patents

Abstract

The utility model discloses a magnetism isolating sheet and a compressor, relates to the technical field of compressors, solves the problems that the existing variable frequency compressor is limited in counterweight and cannot assist a motor in heat dissipation, is convenient for counterweight installation and motor heat dissipation, and has the following specific scheme: the magnetic isolation sheet comprises a circular magnetic isolation sheet main body, a balancing weight and fan blades which are relatively and fixedly arranged on the magnetic isolation sheet main body, wherein a through hole is formed in the center position of the magnetic isolation sheet main body, and a plurality of rivet holes are formed in the periphery of the through hole.

Description

Magnetism isolating sheet and compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a magnetic isolation sheet and a compressor.

Background

The working principle of the variable frequency compressor is as follows: when the compressor is electrified to work, the stator generates the same magnetic field as the magnet in the rotor, and according to the principle of mutual repulsion of the same magnetic poles, the rotor rotates to drive the transmission shaft to rotate, so that the piston moves eccentrically in the cylinder, and the low-temperature low-pressure gas refrigerant medium is compressed into high-temperature high-pressure gas which is discharged into the shell through the silencing cover by the cylinder hole.

The inventor finds that when the variable frequency compressor operates, the problems of large vibration, fluctuation of rotating speed and the like of the compressor caused by the unbalanced force exist, and in order to balance the unbalanced force when the refrigerator compressor operates, a counterweight is required to be added on a rotating part, and the existing weight increasing mode has two ways, namely, the increase on a crankshaft fan blade is realized, but the weight increasing limited by the installation space is limited; another is to add a counterweight to the eccentric top of the crankshaft, but this solution increases the wear of the eccentric and also increases the difficulty of the assembly process. The magnetic isolation sheet adopted by the existing variable frequency compressor is of a 304 stainless steel sheet-shaped structure, so that the compressor has no balance effect and no heat dissipation effect, and the motor generates heat when the compressor runs, the motor efficiency is easy to reduce due to high temperature, and even the risk of burning occurs when the temperature is severe.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the magnetic isolation sheet and the compressor, wherein the balancing weight for balancing the weight and the fan blade for accelerating the air flow are fixedly arranged on the magnetic isolation sheet main body, the balancing weight is not required to be arranged on the fan blade of the crankshaft, the abrasion of the eccentric part is avoided, the heat dissipation of the motor can be assisted, and the problems that the balancing weight of the existing variable frequency compressor is limited and the heat dissipation of the motor cannot be assisted are solved.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

in a first aspect, an embodiment of the present utility model provides a magnetic isolation sheet, including an annular magnetic isolation sheet main body, and a balancing weight and a fan blade relatively fixedly disposed on the magnetic isolation sheet main body, where a through hole is disposed at a central position of the magnetic isolation sheet main body, and a plurality of rivet holes are disposed on a peripheral side of the through hole.

As a further implementation mode, the magnetism isolating sheet main body, the fan blades and the balancing weights are integrally formed.

As a further implementation manner, the balancing weight is of an arc-shaped structure.

As a further implementation manner, the balancing weight and the magnetism isolating sheet main body are coaxially arranged.

As a further implementation mode, the fan blades are of arc structures, the fan blades are provided with a plurality of fan blades, and the fan blades are arranged at intervals along the annular direction of the central through hole of the magnetic isolation sheet main body.

As a further implementation manner, the fan blades are distributed on the opposite sides of the balancing weight by taking the rotating shaft of the magnetism isolating sheet main body as the center.

As a further implementation mode, the fan blade is of a variable cross-section structure with wide outside and narrow inside.

As a further implementation manner, the cross-sectional area of the fan blade gradually decreases from one end close to the outer ring of the magnetism isolating sheet main body toward the direction in which the central through hole extends.

In a second aspect, another embodiment of the present utility model provides a compressor including a magnetism blocking sheet.

As a further implementation manner, the magnetic isolation sheet main body is tightly and fixedly arranged on the end face of the compressor rotor.

The beneficial effects of the utility model are as follows:

1) The balancing weight for balancing the weight and the fan blade for accelerating the flow of the gas are fixedly arranged on the magnetic isolation sheet main body, the balancing weight is not required to be arranged on the fan blade of the crankshaft, abrasion of an eccentric position is avoided, and meanwhile the fan blade can accelerate the flow of the gas so as to take away the heat of the motor and reduce the temperature of the motor.

2) The fan blade and the balancing weight are fixedly arranged on the magnetic isolation sheet main body, and are integrally formed with the magnetic isolation sheet main body, so that the difficulty in adding the fan blade and the balancing weight to the existing compressor rotor is greatly reduced, and the problem of limited space is avoided.

3) The fan blades with wide outer part and narrow inner part are arranged, so that the flow of the refrigerant in the compressor is accelerated, the low-temperature refrigerant can enter the motor more easily, the wind direction is increased, and the heat dissipation efficiency of the motor is accelerated.

4) The fan blades are distributed on the opposite sides of the balancing weights by taking the rotating shaft of the magnetic isolation sheet main body as the center, so that the control of the quality of the balancing weights and the whole quality of the fan blades is facilitated, and the accuracy of the installation of the balancing weights is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic top view of a magnetic separator sheet according to one or more embodiments of the present utility model;

FIG. 2 is a schematic side view of a magnetic separator sheet according to one or more embodiments of the present utility model;

in the figure: the mutual spacing or size is exaggerated for showing the positions of all parts, and the schematic drawings are used only for illustration;

1, balancing weight; 2. a fan blade; 3. rivet hole; 4. a magnetic isolation sheet main body.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

As introduced by the background technology, the weight increasing modes of the existing variable frequency compressor are two, one is that the number of the crankshaft fan blades is increased, but the weight increasing quantity limited by the installation space is limited; another is to add a counterweight to the eccentric top of the crankshaft, but this solution increases the wear of the eccentric and also increases the difficulty of the assembly process. The existing variable frequency compressor has the problems of poor heat dissipation capability, efficiency reduction caused by high temperature and even risk of burning in severe cases, and the utility model provides the magnetic isolation sheet and the compressor for solving the problems.

Example 1

In an exemplary embodiment of the present utility model, as shown in fig. 1-2, a magnetic separator is provided, which includes a magnetic separator body 4, and a balancing weight 1 and a fan blade 2 fixedly disposed on the magnetic separator body 4.

Wherein, magnetism isolating sheet main part 4, flabellum 2 and balancing weight 1 adopt cast aluminium technology integrated into one piece, and balancing weight 1 is used for balanced compressor moving part's unbalanced force, and flabellum 2 is used for increasing the amount of wind, supplementary temperature that reduces the motor.

The magnetism isolating sheet main body 4 is of a circular sheet structure, a through hole is formed in the center of the magnetism isolating sheet main body 4 and is used for connecting the magnetism isolating sheet main body 4 with a rotor, a plurality of rivet holes 3 are formed in the periphery of the through hole at intervals, and the magnetism isolating sheet main body 4 can be fixedly installed on the rotor core through rivets.

The balancing weight 1 is of an arc-shaped structure, the balancing weight 1 is fixedly arranged on the upper surface of the magnetic isolation sheet main body 4, and the balancing weight 1 and the magnetic isolation sheet main body 4 are coaxially arranged and mainly used for balancing unbalanced force of moving parts of the compressor.

It will be appreciated that in practical applications, the magnetic shield sheet body 4 may be rotated according to the unbalanced force of the moving parts of the compressor, so as to adjust the installation position of the balancing weight 1, and may be specifically determined according to practical situations.

The fan blades 2 are also fixedly arranged on the upper surface of the magnetism isolating sheet main body 4, the fan blades 2 are of arc structures, the fan blades 2 are provided with a plurality of fan blades 2, and the plurality of fan blades 2 are arranged at intervals along the annular direction of the central through hole of the magnetism isolating sheet main body 4 so as to be used for assisting the heat dissipation of the motor.

The fan blades 2 and the balancing weights 1 are oppositely arranged along the central through hole of the magnetism isolating sheet main body 4, and specifically, the plurality of fan blades 2 are distributed on the opposite sides of the balancing weights by taking the rotating shaft (also can be understood as a central axis) of the magnetism isolating sheet main body 4 as the center so as to control the quality of the balancing weights 1 and the whole quality of the fan blades 2.

The fan blade 2 is of a variable cross-section structure with wide outside and narrow inside, and the cross-section area of the fan blade 2 gradually decreases from one end, close to the outer ring of the magnetism isolating sheet main body 4, towards the direction that the central through hole extends, namely, the cross-section area of one end, close to the outer ring of the magnetism isolating sheet main body 4, of the fan blade 2 is larger than that of one end, close to the central through hole of the magnetism isolating sheet main body 4, of the fan blade 2.

The fan blades 2 with wide outer part and narrow inner part are arranged, so that the flow of the refrigerant in the compressor is quickened, the low-temperature refrigerant can enter the motor more easily, the wind direction is increased, and the heat dissipation efficiency of the motor is quickened.

Because balancing weight 1, flabellum 2 are fixed to be set up on magnetism isolating sheet main part 4, and with magnetism isolating sheet main part 4 integrated into one piece, greatly reduced current compressor rotor increase balancing weight 1, the degree of difficulty of flabellum 2, and not influenced by the limited problem in space.

Example 2

In another exemplary embodiment of the present utility model, a compressor is provided that utilizes the magnetic separator sheet described in example 1.

Specifically, the magnetic isolation sheet main body 4 is tightly attached to the end face of the compressor rotor, and the magnetic isolation sheet main body 4 and the rotor are fixedly connected together through rivets.

In the embodiment, the balancing weight 1, the fan blades 2 and the magnetism isolating sheet main body 4 are of an integrated structure, so that the installation convenience is greatly improved, the balancing weight 1 can balance unbalanced force when the compressor operates, and the balancing weight is arranged on the rotor, so that friction at an eccentric position is reduced; the fan blades 2 with variable cross sections can accelerate the flow of gas so as to take away the heat of the motor and reduce the temperature of the motor.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The magnetic isolation sheet is characterized by comprising a circular magnetic isolation sheet main body, a balancing weight and fan blades which are relatively and fixedly arranged on the magnetic isolation sheet main body, wherein a through hole is formed in the center of the magnetic isolation sheet main body, and a plurality of rivet holes are formed in the periphery of the through hole;

the balancing weight is of an arc-shaped structure;

the balancing weight and the magnetism isolating sheet main body are coaxially arranged;

the fan blades are of arc structures, the fan blades are provided with a plurality of fan blades, and the fan blades are arranged at intervals along the annular direction of the central through hole of the magnetic isolation sheet main body.

2. The magnetic separator according to claim 1, wherein the magnetic separator body, the fan blade and the weight are integrally formed.

3. The magnetic separator according to claim 1, wherein the fan blades are disposed on opposite sides of the weight member with respect to a rotation axis of the magnetic separator body.

4. The magnetic separator according to claim 1, wherein the fan blade has a variable cross-section structure with a wide outer surface and a narrow inner surface.

5. The magnetic separator according to claim 4, wherein the fan blades are gradually reduced in cross-sectional area from one end near the outer ring of the magnetic separator body toward the direction in which the central through hole extends.

6. A compressor comprising the magnetism isolating sheet according to any one of claims 1 to 5.

7. The compressor of claim 6, wherein the magnetic separator sheet body is fixedly attached to an end surface of the compressor rotor.