Motor with energy-saving, power-saving and waterproof functions

Abstract

The utility model discloses a motor with energy-saving, power-saving and waterproof functions, and relates to the technical field of motors for cooling fans of freezer compressors in the refrigeration industry. The motor solves the technical defects of a motor for a cooling fan of a refrigerator compressor, and comprises a cover plate, an EC motor power supply circuit module, a motor stator, a front casing, a motor rotor and a rear cover, a stator waterproof sleeve used for separating a motor stator and a motor rotor is arranged in the front machine shell, the stator waterproof sleeve and the front machine shell are integrally formed, the waterproof sleeve is arranged in an inner cavity of the inner magnetic ring, and a shaft sleeve extending into the inner cavity is arranged at the bottom of the waterproof sleeve. The waterproof sleeve is sleeved with the inner magnetic ring, the motor stator is arranged in the waterproof sleeve, the EC motor power circuit module is arranged in the containing cavity of the front machine shell, and the front machine shell is filled with sealant for sealing the EC motor power circuit module and the motor stator, so that the EC motor can be suitable for heat dissipation of the refrigerator compressor, electric energy is saved, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of motors used in the cooling fan of refrigerator compressors in the refrigeration industry. Background Technology

[0002] Traditional refrigerator compressors typically use shaded-pole motors to drive fan blades for heat dissipation. While shaded-pole motors are simple in structure and facilitate waterproofing of the circuitry, they are less efficient and consume more power compared to EC motors (brushless DC motors). Currently, to address the technical limitations of using shaded-pole motors in refrigerator compressor heat dissipation, EC motors are also used. To adapt EC motors to humid environments, they are generally enclosed in a fully sealed frame with glue or employ complex waterproof structures, which result in high costs and poor heat dissipation. Utility Model Content

[0003] In summary, the purpose of this utility model is to address the technical deficiencies of the motor used in the cooling fan of a freezer compressor, and to propose a motor with energy-saving, power-saving, and waterproof functions.

[0004] To address the technical shortcomings of this utility model, the following technical solution is adopted:

[0005] A power-saving and waterproof motor includes a cover plate, an EC motor power circuit module, a motor stator, a front housing, a motor rotor, and a rear cover. The motor rotor is housed in a cavity between the front housing and the rear cover and includes an inner magnetic ring, a shaft, and an output shaft. The shaft is located at the center of the inner magnetic ring, and the rear end of the output shaft is fixedly connected to both the inner magnetic ring and the front end of the shaft. The front end of the output shaft extends beyond the rear cover. The front housing contains a stator waterproof sleeve to separate the motor stator from the motor rotor. The stator waterproof sleeve is connected to the front housing... The shell is integrally molded, and the waterproof sleeve is placed in the inner cavity of the inner magnetic ring. The bottom of the waterproof sleeve is provided with a bushing extending into the inner cavity. The shaft is inserted into the bushing, and the inner magnetic ring is sleeved on the outside of the waterproof sleeve, with a clearance fit with the outer wall of the waterproof sleeve. The motor stator is placed in the waterproof sleeve, and the EC motor power circuit module is placed in the cavity of the front housing and connected to the motor stator. The front housing is filled with sealant to seal the EC motor power circuit module and the motor stator. The cover plate is fixed to the cavity opening of the front housing.

[0006] The technical features that further define this utility model include:

[0007] The front end face of the output shaft is provided with three or more fan blade positioning parts, and the center of the front end face is provided with a fan blade locking screw hole.

[0008] The cover plate has a through hole at its center that corresponds to the bushing, and the bushing is inserted into the through hole.

[0009] The EC motor power circuit module and motor stator inside the front housing are sealed and fixed with epoxy resin.

[0010] The front housing is made of injection molded parts that can withstand 12V, 24V, 48V or 220V voltage.

[0011] The beneficial effects of this utility model are as follows: This utility model uses a waterproof sleeve inside the front housing to waterproofly separate the motor stator and motor rotor that need to be waterproofed. By filling the front housing with sealant to waterproof and seal the EC motor power circuit module and motor stator, the EC motor can be used for heat dissipation of the refrigerator compressor, thereby saving energy. The structure is simple and the manufacturing cost is low. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0014] Figure 3 This is an exploded structural diagram of the present invention;

[0015] Figure 4 This is an exploded structural diagram of the present invention from another angle. Detailed Implementation

[0016] The structure of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] Reference Figures 1 to 4 As shown in the figure, the present invention discloses an energy-saving and waterproof motor, including a cover plate 1, an EC motor power circuit module 2, a motor stator 3, a front housing 4, a motor rotor 5, and a rear cover 6. The motor rotor 5 is placed in the cavity between the front housing 4 and the rear cover 6. Since the motor rotor 5 has no circuit structure, the motor rotor 5 in this case does not require additional waterproofing compared to the motor rotor of a regular EC motor. In order to achieve sealing and waterproofing of the EC motor power circuit module 2 and the motor stator 3, and to prevent humid air from the external humid environment from entering the EC motor power circuit module 2 and the motor stator 3, the present invention mainly improves the mounting structure of the motor rotor 5 and the internal structure of the front housing 4. The motor rotor 5 includes an inner magnetic ring 51, a shaft 52, and an output shaft 52. The shaft 52 is located at the center of the inner magnetic ring 51. The rear end of the output shaft 53 is fixedly connected to both the inner magnetic ring 51 and the front end of the shaft 52. The front end of the output shaft 53 extends out of the rear cover 6 from the shaft hole on the rear cover 6.

[0018] The front housing 4 contains a stator waterproof sleeve 41 for separating the motor stator 3 and the motor rotor 5. The stator waterproof sleeve 41 is integrally formed with the front housing 4 and is placed inside the inner cavity of the inner magnetic ring 51. The bottom of the waterproof sleeve 41 has a bushing 42 extending into the inner cavity. The shaft 52 is inserted into the bushing 42 and is rotatably connected to the bushing 42 through a bearing. The inner magnetic ring 51 is sleeved on the outside of the waterproof sleeve 41 and is clearance-fitted with the outer wall of the waterproof sleeve 41. The motor stator 3 is placed inside the waterproof sleeve 41, and the EC motor power circuit module 2 is placed inside the cavity of the front housing 4 and connected to the motor stator 3. The EC motor power circuit module 2 is an internal component of the EC motor. The intelligent control module provides power to the motor stator 3 and controls the commutation of each coil of the motor stator 3. It is usually fixedly installed together with the motor stator 3. In this invention, the front housing 4 is filled with sealant to seal the EC motor power circuit module 2 and the motor stator 3. Specifically, epoxy resin can be injected into the surface of the EC motor power circuit module 2 inside the front housing 4 to form a waterproof layer on the EC motor power circuit module 2. At the same time, it seals the gap between the EC motor power circuit module 2 and the inner wall of the front housing 4, preventing humid air from entering the waterproof sleeve 41 and contacting the motor stator 3. The cover plate 1 is fixed at the cavity opening of the front housing 4 to protect the sealant.

[0019] To facilitate the installation and fixation of the output shaft 53 and the fan blades, the front end face of the output shaft 53 is provided with three or more fan blade positioning parts 531, and the center of the front end face is provided with a fan blade locking screw hole 532.

[0020] In the specific implementation process, as needed, the center of the cover plate 1 may be provided with a cover plate through hole 11 corresponding to the bushing 42. The bushing 42 is inserted into the cover plate through hole 11, and the end of the bushing 42 is supported and fixed by the cover plate 1, thereby improving the support strength of the bushing 42.

[0021] The front housing 41 is made of injection-molded parts that can withstand 12V, 24V, 48V or 220V voltages. It can adapt to EC motors with different working voltages without affecting the magnetic force transmission between the motor stator and the inner magnetic ring.

Claims

1. A motor with energy-saving and waterproof functions, comprising a cover plate, an EC motor power circuit module, a motor stator, a front housing, a motor rotor, and a rear cover; characterized in that: The motor rotor is arranged in the cavity between the front casing and the rear cover, comprising an inner magnetic ring, a shaft center and an output shaft, the shaft center is located in the center of the inner magnetic ring, the rear end of the output shaft is fixedly connected with the front end of the inner magnetic ring and the shaft center, and the front end of the output shaft extends out of the rear cover; the front casing is internally provided with a stator waterproof sleeve for separating the motor stator and the motor rotor, the stator waterproof sleeve is integrally formed with the front casing, the waterproof sleeve is arranged in the inner cavity of the inner magnetic ring, the bottom of the waterproof sleeve is provided with a shaft sleeve extending into the inner cavity; the shaft center is inserted into the shaft sleeve, the inner magnetic ring is sleeved outside the waterproof sleeve and is in clearance fit with the outer wall of the waterproof sleeve; the motor stator is arranged in the waterproof sleeve, the EC motor power circuit module is arranged in the cavity of the front casing and is connected with the motor stator, the front casing is filled with sealing glue for sealing the EC motor power circuit module and the motor stator, and the cover plate is fixed at the opening of the cavity of the front casing.

2. The motor machine with energy-saving and waterproof function according to claim 1, characterized in that: The front end surface of the output shaft is provided with more than three fan blade positioning members, and the center of the front end surface is provided with a fan blade locking screw hole.

3. The motor machine with energy-saving and waterproof function according to claim 1, characterized in that: The center of the cover plate is provided with a cover plate through hole corresponding to the shaft sleeve, and the shaft sleeve is inserted into the cover plate through hole.

4. The motor machine with energy-saving and waterproof function according to claim 1, characterized in that: The EC motor power circuit module and the motor stator in the front casing are fixedly sealed by epoxy resin.

5. The motor machine with energy-saving and waterproof function according to claim 1, characterized in that: The front casing is made of injection molding parts resistant to 12V, 24V, 48V or 220V voltage.

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