Alternating current asynchronous induction constant temperature control motor

Abstract

The utility model discloses an alternating current asynchronous induction constant temperature control motor which comprises a stator, a rotor, a casing, a front end cover, a rear end cover, a motor shaft, a nitrogen heat exchanger, a temperature sensor, a nitrogen inlet pipe and a nitrogen outlet pipe, the front end cover is mounted on the front end face of the casing, and the rear end cover is mounted on the rear end face of the casing. A motor inner cavity defined by the front end cover, the machine shell and the rear end cover is filled with nitrogen, the nitrogen inlet pipe is installed on the rear end cover and communicated with the motor inner cavity, the nitrogen outlet pipe is installed on the front end cover and communicated with the motor inner cavity, and the nitrogen outlet pipe is communicated with an air inlet of the nitrogen heat exchanger. The nitrogen inlet pipe is communicated with a gas outlet of the nitrogen heat exchanger, the temperature sensor is installed on the front end cover and located in an inner cavity of the motor, and the nitrogen heat exchanger and the temperature sensor are connected with the electric controller. According to the utility model, the motor can be ensured to work normally under a high heat load or an extremely cold environment.

Description

Technical Field

[0001] The utility model relates to an AC motor, in particular to an AC asynchronous induction motor, and belongs to the technical field of motors. Background Art

[0002] AC asynchronous induction motors are widely used to drive a wide range of mechanical equipment, including industrial equipment and household appliances. However, when operating in harsh conditions, such as high ambient temperatures or prolonged use, the motors can exceed their rated temperature, easily burning out. Consequently, the motors cannot operate under high thermal loads for extended periods. Furthermore, when exposed to extreme cold, the motors cannot start, significantly impacting their performance in these harsh environments. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an AC asynchronous induction constant temperature control motor which can ensure that the motor can work normally under high heat load or in an extremely cold environment.

[0004] In order to solve the above technical problems, the utility model adopts such an AC asynchronous induction constant temperature control motor, including a stator, a rotor, a casing, a front cover, a rear cover and a motor shaft, wherein the stator is mounted on the casing, the rotor is mounted on the motor shaft, the front cover is mounted on the front end surface of the casing, and the front cover is sealed with the front end surface of the casing, the rear cover is mounted on the rear end surface of the casing, and the rear cover is sealed with the rear end surface of the casing, and further includes a nitrogen heat exchanger, a temperature sensor, a nitrogen An air inlet pipe and a nitrogen air outlet pipe are provided, wherein the inner cavity of the motor surrounded by the front end cover, the housing and the rear end cover is filled with nitrogen. The nitrogen air inlet pipe is installed on the rear end cover and is communicated with the inner cavity of the motor. The nitrogen air outlet pipe is installed on the front end cover and is communicated with the inner cavity of the motor. The nitrogen air outlet pipe is communicated with the air inlet of the nitrogen heat exchanger. The nitrogen air inlet pipe is communicated with the air outlet of the nitrogen heat exchanger. The temperature sensor is installed on the front end cover and is located in the inner cavity of the motor. The nitrogen heat exchanger and the temperature sensor are connected to the electric controller.

[0005] As a preferred embodiment of the present invention, a circulating fan is further provided between the nitrogen heat exchanger and the nitrogen inlet pipe, the air outlet of the nitrogen heat exchanger is connected to the air inlet of the circulating fan, the air outlet of the circulating fan is connected to the nitrogen inlet pipe, and the circulating fan is connected to an electric controller.

[0006] As a preferred embodiment of the present invention, the nitrogen heat exchanger and the temperature sensor are connected to an electric controller via a wired cable or a wireless signal. The electric controller is a motor controller, a PLC programmable controller or an industrial computer.

[0007] After adopting the above structure, the utility model has the following beneficial effects:

[0008] The present invention is provided with a nitrogen heat exchanger, a temperature sensor, a nitrogen inlet pipe, and a nitrogen outlet pipe. The motor cavity is filled with nitrogen. The nitrogen inlet pipe is mounted on the rear end cover and communicates with the motor cavity. The nitrogen outlet pipe is mounted on the front end cover and communicates with the motor cavity. The nitrogen outlet pipe is connected to the nitrogen heat exchanger's air inlet. The nitrogen inlet pipe is connected to the nitrogen heat exchanger's air outlet. The temperature sensor is mounted on the front end cover and is located within the motor cavity. The nitrogen heat exchanger and the temperature sensor are connected to an electric controller. When the motor operates under high heat load, the temperature sensor transmits the temperature of the motor cavity at the front end cover to the electric controller in real time. When the electric controller detects that the temperature of the motor cavity exceeds the rated temperature, the electric controller activates and controls the nitrogen heat exchanger to cool. The cold nitrogen produced by the nitrogen heat exchanger enters the motor cavity through the nitrogen inlet pipe to reduce the temperature of components such as the stator and rotor. When the electric controller detects that the temperature of the motor cavity reaches or falls below the rated temperature, the electric controller stops the nitrogen heat exchanger to cool, thereby controlling the motor to operate smoothly at the rated temperature. When the motor is in an extremely cold and harsh environment, the electric controller detects the extremely low temperature of the motor cavity through the temperature sensor, and thus starts and controls the nitrogen heat exchanger to heat. The hot nitrogen produced by the nitrogen heat exchanger enters the motor cavity through the nitrogen inlet pipe to increase the temperature of components such as the stator and rotor, so that the motor can start smoothly and work normally at low temperatures.

[0009] The utility model provides a circulating fan between the nitrogen heat exchanger and the nitrogen inlet pipe. Such a structure can shorten the cooling or heating time and further improve the working efficiency of the motor.

[0010] The utility model has a simple structure and low manufacturing cost, and since nitrogen is an inert gas, it will not cause corrosion or oxidation to the internal parts of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a structural diagram of the AC asynchronous induction constant temperature control motor of the present utility model. DETAILED DESCRIPTION

[0013] See also Figure 1The AC asynchronous induction constant temperature control motor shown in the figure includes a stator, a rotor, a casing 1, a front cover 2, a rear cover 3 and a motor shaft. The stator, rotor and motor shaft are not shown in the figure. The stator is fixedly mounted on the casing 1, the rotor is fixedly mounted on the motor shaft, the front cover 2 is fixedly mounted on the front face of the casing 1, and the front cover 2 is sealed with the front face of the casing 1 through a sealing gasket. The rear cover 3 is fixedly mounted on the rear face of the casing 1, and the rear cover 3 is sealed with the rear face of the casing 1 through a sealing gasket. It also includes a conventional nitrogen heat exchanger 4, a temperature sensor 5, The nitrogen inlet pipe 6 and the nitrogen outlet pipe 7 are filled with nitrogen in the motor cavity surrounded by the front cover 2, the housing 1 and the rear cover 3. The nitrogen inlet pipe 6 is installed on the rear cover 3 and is connected to the motor cavity. The nitrogen outlet pipe 7 is installed on the front cover 2 and is connected to the motor cavity. The nitrogen outlet pipe 7 is connected to the air inlet of the nitrogen heat exchanger 4 through a connecting pipe. The nitrogen inlet pipe 6 is connected to the air outlet of the nitrogen heat exchanger 4 through a connecting pipe. The temperature sensor 5 is fixedly installed on the front cover 2 and is located in the motor cavity. The nitrogen heat exchanger 4 and the temperature sensor 5 are connected to the electric controller.

[0014] As a preferred embodiment of the present invention, Figure 1 As shown, a circulating fan 8 is further provided between the nitrogen heat exchanger 4 and the nitrogen inlet pipe 6. The air outlet of the nitrogen heat exchanger 4 is connected to the air inlet of the circulating fan 8, the air outlet of the circulating fan 8 is connected to the nitrogen inlet pipe 6, and the circulating fan 8 is connected to an electric controller.

[0015] As a preferred embodiment of the present invention, the nitrogen heat exchanger 4 and the temperature sensor 5 are connected to an electric controller via a wired cable or a wireless signal. The electric controller is a motor controller or a PLC programmable controller or an industrial computer. The electric controller is not shown in the figure.

[0016] After trial, the utility model has been found to have a simple structure, can ensure the normal operation of the motor under high heat load or in an extremely cold environment, and has achieved good practical effects.

Claims

1. An AC asynchronous induction constant temperature control motor, comprising a stator, a rotor, a housing (1), a front end cover (2), a rear end cover (3) and a motor shaft, wherein the stator is mounted on the housing (1), the rotor is mounted on the motor shaft, the front end cover (2) is mounted on the front end face of the housing (1), and the front end cover (2) is sealed with the front end face of the housing (1), and the rear end cover (3) is mounted on the rear end face of the housing (1), and the rear end cover (3) is sealed with the rear end face of the housing (1), characterized in that: The motor further comprises a nitrogen heat exchanger (4), a temperature sensor (5), a nitrogen inlet pipe (6) and a nitrogen outlet pipe (7). The inner cavity of the motor surrounded by the front end cover (2), the housing (1) and the rear end cover (3) is filled with nitrogen. The nitrogen inlet pipe (6) is mounted on the rear end cover (3) and communicates with the inner cavity of the motor. The nitrogen outlet pipe (7) is mounted on the front end cover (2) and communicates with the inner cavity of the motor. The nitrogen outlet pipe (7) is connected to the air inlet of the nitrogen heat exchanger (4). The nitrogen inlet pipe (6) is connected to the air outlet of the nitrogen heat exchanger (4). The temperature sensor (5) is mounted on the front end cover (2) and is located in the inner cavity of the motor. The nitrogen heat exchanger (4) and the temperature sensor (5) are connected to the electric controller.

2. The AC asynchronous induction constant temperature control motor according to claim 1, characterized in that: A circulating fan (8) is further provided between the nitrogen heat exchanger (4) and the nitrogen inlet pipe (6); the air outlet of the nitrogen heat exchanger (4) is connected to the air inlet of the circulating fan (8); the air outlet of the circulating fan (8) is connected to the nitrogen inlet pipe (6); and the circulating fan (8) is connected to an electric controller.

3. The AC asynchronous induction constant temperature control motor according to claim 1 or 2, characterized in that: The nitrogen heat exchanger (4) and the temperature sensor (5) are connected to an electric controller via a wired cable or a wireless signal. The electric controller is a motor controller, a PLC programmable controller, or an industrial computer.

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