Motor front bearing cooling device and motor

Abstract

The utility model discloses a motor front bearing cooling device and a motor, the motor front bearing cooling device comprises a cooler installed on the motor, the cooler is provided with an air inlet and an air outlet, the air inlet faces a cooling fan installed on the motor, the air outlet faces a front bearing, and the air inlet of the cooler can collect cooling air generated by the cooling fan. Cooling air is conveyed to the front bearing through the air outlet, the temperature of the front bearing is reduced, the front bearing is effectively cooled, the situation that the temperature of the front bearing is too high and the front bearing is burnt is reduced, normal operation of the front bearing is ensured, and the service life of the front bearing is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of motor bearing cooling, and specifically relates to a motor front bearing cooling device and a motor. Background Art

[0002] When the motor rotates, the front and rear bearings heat up greatly. The rear bearing is within the cooling range of the cooling air, so the cooling effect is good and the temperature rise of the rear bearing is relatively low. The front bearing is outside the cooling range of the cooling air, and the temperature of the front bearing of the motor is significantly higher than that of the rear bearing. When the temperature of the front bearing of the motor exceeds the allowable temperature range of the bearing, the front bearing may be burned. Utility Model Content

[0003] In order to solve the technical problem in the related art that the temperature of the front bearing of the motor exceeds the allowable temperature range of the bearing, the first aspect of the present application provides a motor front bearing cooling device, the motor front bearing cooling device includes a cooler installed on the motor, the cooler has an air inlet and an air outlet, the air inlet faces a cooling fan installed on the motor, and the air outlet faces the front bearing.

[0004] In some embodiments, the cooler includes an air inlet pipe section, a cooling main pipe section and an air outlet pipe section, the air inlet pipe section, the cooling main pipe section and the air outlet pipe section are connected in sequence, the cooling main pipe section is installed on the front end cover of the motor, the front bearing of the motor is installed on the front end cover and is located on one side of the front end cover, the air inlet pipe section has an air inlet, and the air outlet pipe section has an air outlet.

[0005] In some embodiments, the axis of the air inlet pipe section is arranged at an angle with the axis of the cooling main pipe section, and the axis of the cooling main pipe section coincides with the axis of the air outlet pipe section.

[0006] In some embodiments, the air inlet is located at one end of the air inlet pipe section away from the cooling main pipe section, the air outlet is located at one end of the air outlet pipe section away from the cooling main pipe section, and the diameter of the air outlet pipe section gradually decreases in the direction away from the cooling main pipe section.

[0007] In some embodiments, the diameter of the air inlet pipe section gradually increases in a direction away from the cooling body pipe section.

[0008] In some embodiments, the motor front bearing cooling device also includes a magnetic fixing seat, which is installed on the cooling body pipe section and is selectively magnetically connected to the front end cover.

[0009] In some embodiments, the magnetic fixing seat includes a magnet, and the magnet has a selection switch. When the selection switch is closed, the magnet generates magnetic force to connect the cooling main pipe section with the front end cover; when the selection switch is disconnected, the magnet loses magnetic force to separate the cooling main pipe section from the front end cover.

[0010] In some embodiments, the magnetic fixing seat includes an electromagnet, which is installed on the cooling main pipe section. When the electromagnet is charged, the electromagnet generates magnetic force to connect the cooling main pipe section with the front end cover; when the electromagnet loses power, the electromagnet loses magnetic force to separate the cooling main pipe section from the front end cover.

[0011] In some embodiments, a plurality of magnetic fixing seats are provided, and the plurality of magnetic fixing seats are installed at intervals on the cooling main pipe section.

[0012] A second aspect of the present application provides a motor, the motor comprising:

[0013] A motor body, the motor body comprising a front cover and a front bearing, the front bearing being mounted on the front cover and located on one side of the front cover; and the above-mentioned motor front bearing cooling device, the cooler being mounted on the front cover, the air outlet of the cooler facing the front bearing.

[0014] According to one or more embodiments of the present application, a motor front bearing cooling device and a motor are provided. The motor front bearing cooling device includes a cooler installed on the motor. The cooler has an air inlet and an air outlet. The air inlet faces a cooling fan installed on the motor, and the air outlet faces the front bearing. The air inlet of the cooler can collect cooling air generated by the cooling fan and transport the cooling air to the front bearing through the air outlet, thereby reducing the temperature of the front bearing, achieving effective cooling of the front bearing, reducing the situation where the front bearing is burned due to excessive temperature, ensuring the normal operation of the front bearing, and increasing the service life of the front bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a motor in the related art;

[0016] Figure 2 A schematic diagram of the structure of a motor (with a cooler) in one or more embodiments of the present application;

[0017] Figure 3 A schematic structural diagram of a motor (with a cooler) from another angle in one or more embodiments of the present application;

[0018] Figure 4 It is a schematic diagram of the structure of a cooler in one or more embodiments of the present application.

[0019] Description of reference numerals:

[0020] 10. Cooling fan; 20. Motor body; 21. Heat dissipation ribs; 30. Front end cover;

[0021] 40. Cooler; 41. Air inlet pipe section; 411. Air inlet; 42. Cooling main pipe section; 43. Air outlet pipe section; 431. Air outlet; 45. Magnetic fixing seat; 50. Front bearing. DETAILED DESCRIPTION

[0022] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] During the operation of the motor, the temperature of the motor increases due to losses. In order to ensure the normal operation and service life of the motor, the motor needs to be cooled. Different motors have different cooling media and cooling methods. The cooling method of the IC411 motor is to use the cooling fan 10 built into the motor body 20 to generate air volume to achieve motor cooling. Figure 1 , Figure 1 The figure shows the cooling method of the IC411 motor. A cooling fan 10 is installed on the rear shaft of the motor. When the motor is running, the cooling fan 10 is driven to rotate. The cooling wind is generated from the rear end of the motor and blown horizontally to the front end of the motor along the heat dissipation ribs 21 of the motor housing.

[0024] From the figure, we can see the following problems:

[0025] 1. After the cooling air passes through the motor body 20, it is directly blown out of the front end of the motor, and the bearing seat at the front end of the motor cannot be directly cooled by air.

[0026] 2. The heat generated by the front bearing 50 installed inside the front bearing seat is dissipated in two ways:

[0027] (1) The heat radiation generated by the front bearing 50 dissipates the heat to the surrounding air;

[0028] (2) The front bearing 50 transfers heat to the motor housing through heat conduction, and the motor housing is cooled by cooling air, thereby indirectly cooling the front bearing 50.

[0029] When the motor rotates, the front and rear bearings generate a lot of heat, and the rear end bearing is within the range of cooling air, so the cooling effect is good and the temperature rise is relatively low.

[0030] The cooling air cannot directly act on the front bearing 50. The front bearing 50 can only be cooled by the above two heat dissipation methods, which has a poor cooling effect, resulting in the temperature of the front bearing 50 of the motor being significantly higher than the temperature of the rear bearing. When the temperature of the front bearing 50 of the motor exceeds the allowable temperature range of the bearing, the front bearing 50 may be burned, and the burning and stalling of the front bearing 50 may cause the motor to burn out.

[0031] In order to solve the above problems, the present application provides a motor front bearing cooling device, see Figures 2 to 4 The motor front bearing cooling device includes a cooler 40 installed on the motor. The cooler 40 has an air inlet 411 and an air outlet 431. The air inlet 411 faces the cooling fan 10 installed on the motor, and the air outlet 431 faces the front bearing 50. The air inlet 411 of the cooler 40 can collect the cooling air generated by the cooling fan 10 and transport the cooling air to the front bearing 50 through the air outlet 431, thereby reducing the temperature of the front bearing 50, achieving effective cooling of the front bearing 50, reducing the situation where the front bearing 50 is burned due to excessive temperature, ensuring the normal operation of the front bearing 50, and increasing the service life of the front bearing 50.

[0032] See also Figure 4 The cooler 40 includes an air inlet pipe section 41, a cooling main pipe section 42 and an air outlet pipe section 43. The air inlet pipe section 41, the cooling main pipe section 42 and the air outlet pipe section 43 are connected in sequence. The cooling main pipe section 42 is installed on the front end cover 30 of the motor. The front bearing 50 of the motor is installed on the front end cover 30 and is located on one side of the front end cover 30. The air inlet pipe section 41 has an air inlet 411, and the air outlet pipe section 43 has an air outlet 431.

[0033] The cooling main pipe section 42 is installed on the front cover 30, and the axis of the air inlet pipe section 41 is set at an angle (usually 90 degrees) with the axis of the cooling main pipe section 42 and is horizontal to the heat dissipation rib 21 to collect cooling air. The axis of the air outlet pipe section 43 coincides with the axis of the cooling main pipe section 42 to face the front bearing 50 installed on the front cover 30, which facilitates the cooling of the front bearing 50. In this way, effective cooling of the front bearing 50 installed on the front cover 30 is achieved, the temperature of the front bearing 50 is reduced, the safe and stable operation of the motor is ensured, and the service life of the front bearing 50 is increased. Without modifying the motor structure and under the premise of meeting safety requirements, the cooling air blown out by the cooling fan 10 to the front end of the motor is effectively utilized.

[0034] Please note that Figure 3The height of the air inlet section 41 can be set according to the actual size of the motor, usually 5 cm to 10 cm higher than the front end cover 30 of the motor, so as to facilitate the introduction of cooling air into the air inlet section 41. The distance between the air outlet 431 and the front bearing 50 can also be set according to the actual size of the motor, usually 10 cm to 15 cm higher than the front end bearing seat of the motor, to ensure that the cooling air can be delivered to the front bearing 50, and a distance is set between the air outlet 431 and the front bearing 50 to prevent the air outlet section 43 from interfering with the operation of the motor.

[0035] The sizes of the air inlet pipe section 41, the cooling main pipe section 42 and the air outlet pipe section 43 can be set according to the actual size of the motor, and this application does not limit it. A plurality of motor front bearing cooling devices can be installed on the front end cover 30 of the motor, and the plurality of motor front bearing cooling devices are arranged at intervals around the axis to improve the cooling efficiency of the front bearing 50.

[0036] The material of the air inlet pipe section 41, the cooling main pipe section 42 and the air outlet pipe section 43 can be ordinary steel plate or stainless steel, which can be set according to actual needs and is not limited in this application.

[0037] The air inlet 411 is located at one end of the air inlet pipe section 41 away from the cooling main pipe section 42, and the air outlet 431 is located at one end of the air outlet pipe section 43 away from the cooling main pipe section 42. The diameter of the air outlet pipe section 43 in the direction away from the cooling main pipe section 42 gradually decreases, increasing the flow rate of the cooling air blown out from the air outlet 431 and improving the cooling efficiency of the front bearing 50. The diameter of the air inlet pipe section 41 in the direction away from the cooling main pipe section 42 gradually increases, so that the air inlet 411 of the air inlet pipe section 41 can be enlarged and the amount of cooling air collected by the air inlet pipe section 41 can be increased.

[0038] When the motor is running, the cooling air generated by the cooling fan 10 enters the air inlet duct section 41 through the air inlet 411, and changes the direction of the cooling air through the air inlet duct section 41, the cooling main body duct section 42 and the air outlet duct section 43 in turn, so that the cooling air is blown out through the air outlet 431. The air outlet 431 is located above the bearing seat of the front end cover 30, thereby ventilating and cooling the front bearing 50.

[0039] See also Figures 2 to 4 The motor front bearing cooling device further includes a magnetic fixing seat 45, which is mounted on the cooling main pipe section 42 and selectively magnetically connected to the front cover 30. The magnetic fixing seat 45 includes a magnetizer, which has a selection switch. When the selection switch is closed, the magnetizer generates magnetic force to connect the cooling main pipe section 42 with the front cover 30; when the selection switch is disconnected, the magnetizer loses magnetic force to separate the cooling main pipe section 42 from the front cover 30; the cooling main pipe section 42 is easy to install and has high stability.

[0040] In order to improve the stability of the cooling main pipe section 42 installed on the front end cover 30, a plurality of magnetic fixing seats 45 are provided, and the plurality of magnetic fixing seats 45 are installed at intervals on the cooling main pipe section 42, thereby increasing the connection points between the cooling main pipe section 42 and the front end cover 30 and improving the stability of the cooling main pipe section 42 installed on the front end cover 30.

[0041] In some embodiments, the magnetic fixing seat 45 includes an electromagnet, which is installed on the cooling main pipe section 42. When the electromagnet is charged, the electromagnet generates magnetic force to connect the cooling main pipe section 42 with the front end cover 30; when the electromagnet loses power, the electromagnet loses magnetic force to separate the cooling main pipe section 42 from the front end cover 30.

[0042] The second aspect of the present application provides a motor, which includes a motor body 20 and the above-mentioned motor front bearing cooling device, the motor body 20 includes a front cover 30 and a front bearing 50, and the front bearing 50 is installed on the front cover 30 and is located on one side of the front cover 30. The cooler 40 is installed on the front cover 30, and the air outlet 431 of the cooler 40 faces the front bearing 50. The cooling air is delivered to the front bearing 50 through the air outlet 431, the temperature of the front bearing 50 is reduced, the front bearing 50 is effectively cooled, the situation of the front bearing 50 being burned due to excessive temperature of the front bearing 50 is reduced, the normal operation of the front bearing 50 is ensured, and the service life of the front bearing 50 is increased. In this way, the normal operation of the motor is ensured and stable production is ensured.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A motor front bearing cooling device, characterized in that: The motor front bearing cooling device includes a cooler installed on the motor, the cooler has an air inlet and an air outlet, the air inlet faces a cooling fan installed on the motor, and the air outlet faces the front bearing.

2. The motor front bearing cooling device according to claim 1, characterized in that: The cooler includes an air inlet pipe section, a cooling main pipe section and an air outlet pipe section, the air inlet pipe section, the cooling main pipe section and the air outlet pipe section are connected in sequence, the cooling main pipe section is installed on the front end cover of the motor, the front bearing of the motor is installed on the front end cover and is located on one side of the front end cover, the air inlet pipe section has an air inlet, and the air outlet pipe section has an air outlet.

3. The motor front bearing cooling device according to claim 2, characterized in that: The axis of the air inlet pipe section is arranged at an angle with the axis of the cooling main pipe section, and the axis of the cooling main pipe section coincides with the axis of the air outlet pipe section.

4. The motor front bearing cooling device according to claim 3, characterized in that: The air inlet is located at one end of the air inlet pipe section away from the cooling main pipe section, and the air outlet is located at one end of the air outlet pipe section away from the cooling main pipe section. The diameter of the air outlet pipe section gradually decreases in the direction away from the cooling main pipe section.

5. The motor front bearing cooling device according to claim 4, characterized in that: The diameter of the air inlet pipe section gradually increases in a direction away from the cooling main pipe section.

6. The motor front bearing cooling device according to claim 2, characterized in that: The motor front bearing cooling device also includes a magnetic fixing seat, which is installed on the cooling main pipe section and selectively magnetically connected to the front end cover.

7. The motor front bearing cooling device according to claim 6, characterized in that: The magnetic fixing seat includes a magnetizer, and the magnetizer has a selection switch. When the selection switch is closed, the magnetizer generates magnetic force to connect the cooling body pipe section with the front end cover; When the selection switch is disconnected, the magnetizer loses its magnetic force to separate the cooling main body pipe section from the front end cover.

8. The motor front bearing cooling device according to claim 6, characterized in that: The magnetic fixing seat includes an electromagnet, which is installed on the cooling main pipe section. When the electromagnet is charged, the electromagnet generates magnetic force to connect the cooling main pipe section with the front end cover; when the electromagnet loses power, the electromagnet loses magnetic force to separate the cooling main pipe section from the front end cover.

9. The motor front bearing cooling device according to claim 6, characterized in that: A plurality of magnetic fixing seats are provided, and the plurality of magnetic fixing seats are installed at intervals on the cooling main pipe section.

10. A motor, characterized in that: The motor comprises: A motor body, the motor body comprising a front end cover and a front bearing, the front bearing being mounted on the front end cover and located on one side of the front end cover; and According to the motor front bearing cooling device as described in claims 1 to 9, the cooler is installed on the front end cover, and the air outlet of the cooler faces the front bearing.

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