阅读说明：本技术 压缩机及其运行控制方法、装置、系统、空调器 (Compressor, operation control method, device and system thereof and air conditioner ) 是由 成伟 吴超 金国华 王小燕 卢麟延 于 2020-05-15 设计创作，主要内容包括：本申请涉及一种压缩机及其运行控制方法、装置、系统、空调器,设置有锁轴执行器,在压缩机运行时,能够根据压缩机的输入电源信息检测压缩机的输入电源相角是否对称。并且在输入电源相角不对称的情况下,直接控制锁轴执行器将压缩机本体的电机转轴堵转,阻止压缩机运行,同时也防止压缩机反转运行。通过上述方案,使得压缩机具备反转防御机制,在输入电源出错的情况下能够及时将压缩机堵转,避免压缩机反转磨损,从而有效提高压缩机的运行可靠性。(The application relates to a compressor, an operation control method, a device and a system thereof, and an air conditioner. And under the condition that the phase angle of the input power supply is asymmetric, the shaft locking actuator is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.)

1. An operation control method of a compressor, comprising:

acquiring input power supply information of the compressor;

analyzing whether the phase angle of the input power supply of the compressor is symmetrical or not according to the information of the input power supply;

and when the phase angle of the input power supply is asymmetric, sending a locking control signal to a lock shaft actuator of the compressor, wherein the locking control signal is used for controlling the lock shaft actuator to lock and rotate a motor rotating shaft of a compressor body of the compressor.

2. The operation control method of claim 1, wherein after the step of sending a lock-up control signal to a lock-shaft actuator of the compressor when the input power phase angle is not symmetrical, further comprising:

obtaining a motor winding current of the compressor body;

and when the time length that the current of the motor winding is greater than the preset overcurrent protection threshold reaches the preset time length, controlling the compressor to be powered off.

3. The operation control method according to claim 1, wherein the step of analyzing whether the input power phase angle of the compressor is symmetrical according to the input power information is followed by further comprising:

when the phase angles of the input power supply are symmetrical, detecting the locked rotor state of the motor rotating shaft;

and when the motor rotating shaft is locked, an unlocking control signal is sent to the lock shaft actuator, and the unlocking control signal is used for controlling the lock shaft actuator to interrupt the locked rotation of the motor rotating shaft.

4. The operation control method according to claim 3, wherein the step of detecting a locked-rotor state of the motor shaft when the input power phase angle is symmetrical, is followed by:

and when the rotating shaft of the motor is not locked, controlling the compressor to operate according to preset operation parameters.

5. An operation control device of a compressor, comprising:

the power supply information acquisition module is used for acquiring input power supply information of the compressor;

the power supply phase angle detection module is used for analyzing whether the input power supply phase angle of the compressor is symmetrical or not according to the input power supply information;

and the motor locked rotor control module is used for sending a locking control signal to the shaft locking actuator of the compressor when the phase angle of the input power supply is asymmetric, and the locking control signal is used for controlling the shaft locking actuator to lock the rotor shaft of the motor of the compressor body of the compressor.

6. An operation control system of a compressor, comprising: the compressor control system comprises a power supply information collector, a lock shaft actuator and a controller, wherein the power supply information collector and the lock shaft actuator are respectively connected with the controller, and the controller is used for controlling the operation of the compressor according to the method of any one of claims 1 to 4.

7. The operation control system according to claim 6, wherein the lock shaft actuator comprises a housing, an electromagnet and a movable iron core, the housing is fixedly arranged on the compressor body, the electromagnet is connected with the controller, the electromagnet is arranged in the housing, the movable iron core is movably accommodated in the housing, and when the electromagnet receives a locking control signal, the electromagnet is powered off to move the movable iron core to the motor rotating shaft so as to lock the motor rotating shaft; when the electromagnet receives an unlocking control signal, the electromagnet is electrified to enable the movable iron core to move to the inside of the shell, and the locked rotor of the motor rotating shaft is interrupted.

8. The operation control system according to claim 7, wherein a portion of the movable iron core, which is used for contacting the motor rotating shaft, has a polygonal plane top shaft structure, and a clamping groove matched with the movable iron core is formed at a position of the motor rotating shaft, which is used for contacting the movable iron core.

9. The operation control system according to claim 7, wherein a portion of the movable iron core for contacting the rotating shaft of the motor is a square plane top shaft structure.

10. The operation control system according to claim 6, wherein the number of the lock shaft actuators is two or more.

11. A compressor comprising a compressor body and an operation control system as claimed in any one of claims 6 to 10.

12. An air conditioner characterized by comprising the compressor of claim 11.

Technical Field

The application relates to the technical field of drive control, in particular to a compressor, an operation control method, a device and a system thereof and an air conditioner.

Background

With the rapid development of science and technology and the continuous improvement of the living standard of people, the air conditioner is widely used in daily life of people. The air conditioner compressor is used as the heart of the whole refrigerating system, can suck low-temperature and low-pressure refrigerant gas from the air suction pipe, drives the piston to compress the refrigerant gas through the operation of the motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigerating cycle.

The air conditioner compressor input power phase sequence whether normal direct influence the operation of compressor, when the phase sequence error of input power, can cause the compressor reversal wearing and tearing, still can produce the influence to the refrigeration of air conditioner or heating efficiency simultaneously. Therefore, the conventional compressor has a disadvantage of poor operational reliability.

Disclosure of Invention

In view of the above, it is necessary to provide a compressor, an operation control method, an operation control device, an operation control system, and an air conditioner for solving the problem of poor operation reliability of the conventional compressor.

An operation control method of a compressor, comprising: acquiring input power supply information of the compressor; analyzing whether the phase angle of the input power supply of the compressor is symmetrical or not according to the information of the input power supply; and when the phase angle of the input power supply is asymmetric, sending a locking control signal to a lock shaft actuator of the compressor, wherein the locking control signal is used for controlling the lock shaft actuator to lock and rotate a motor rotating shaft of a compressor body of the compressor.

In one embodiment, after the step of sending a lock control signal to a lock shaft actuator of the compressor when the phase angle of the input power source is not symmetrical, the method further comprises: obtaining a motor winding current of the compressor body; and when the time length that the current of the motor winding is greater than the preset overcurrent protection threshold reaches the preset time length, controlling the compressor to be powered off.

In one embodiment, after the step of analyzing whether the phase angle of the input power of the compressor is symmetrical according to the information of the input power, the method further comprises: when the phase angles of the input power supply are symmetrical, detecting the locked rotor state of the motor rotating shaft; and when the motor rotating shaft is locked, an unlocking control signal is sent to the lock shaft actuator, and the unlocking control signal is used for controlling the lock shaft actuator to interrupt the locked rotation of the motor rotating shaft.

In one embodiment, after the step of detecting the locked-rotor state of the motor rotating shaft when the phase angle of the input power is symmetrical, the method further comprises: and when the rotating shaft of the motor is not locked, controlling the compressor to operate according to preset operation parameters.

An operation control device of a compressor, comprising: the power supply information acquisition module is used for acquiring input power supply information of the compressor; the power supply phase angle detection module is used for analyzing whether the input power supply phase angle of the compressor is symmetrical or not according to the input power supply information; and the motor locked rotor control module is used for sending a locking control signal to the shaft locking actuator of the compressor when the phase angle of the input power supply is asymmetric, and the locking control signal is used for controlling the shaft locking actuator to lock the rotor shaft of the motor of the compressor body of the compressor.

An operation control system of a compressor, comprising: the power supply information collector and the lock shaft actuator are respectively connected with the controller, and the controller is used for controlling the operation of the compressor according to the method.

In one embodiment, the lock shaft actuator comprises a shell, an electromagnet and a movable iron core, the shell is fixedly arranged on the compressor body, the electromagnet is connected with the controller, the electromagnet is arranged in the shell, the movable iron core is movably accommodated in the shell, and when the electromagnet receives a locking control signal, the electromagnet is powered off to enable the movable iron core to move to the motor rotating shaft so as to lock the motor rotating shaft; when the electromagnet receives an unlocking control signal, the electromagnet is electrified to enable the movable iron core to move to the inside of the shell, and the locked rotor of the motor rotating shaft is interrupted.

In one embodiment, the part of the movable iron core, which is used for being in contact with the motor rotating shaft, is of a polygonal plane top shaft structure, and a clamping groove matched with the movable iron core is formed in the position, which is used for being in contact with the movable iron core, of the motor rotating shaft.

In one embodiment, the part of the movable iron core, which is used for being in contact with the rotating shaft of the motor, is of a square plane top shaft structure.

In one embodiment, the number of lock shaft actuators is two or more.

A compressor comprises a compressor body and the operation control system.

An air conditioner comprises the compressor.

The compressor, the operation control method, the operation control device, the operation control system and the air conditioner are provided with the shaft locking actuator, and whether the phase angle of the input power supply of the compressor is symmetrical or not can be detected according to the information of the input power supply of the compressor when the compressor operates. And under the condition that the phase angle of the input power supply is asymmetric, the shaft locking actuator is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart illustrating a method for controlling operation of a compressor according to an embodiment;

FIG. 2 is a voltage phase angle vector diagram in one embodiment;

FIG. 3 is a voltage phase angle vector diagram in another embodiment;

FIG. 4 is a flow chart illustrating an operation control method of the compressor in another embodiment;

FIG. 5 is a flowchart illustrating an operation control method of a compressor in accordance with still another embodiment;

FIG. 6 is a schematic view of an operation control device of the compressor according to an embodiment;

FIG. 7 is a schematic view showing the construction of an operation control device of a compressor in another embodiment;

FIG. 8 is a schematic view of an exemplary embodiment of an operation control system for a compressor;

FIG. 9 is a schematic cross-sectional view of an embodiment of a lock shaft actuator;

fig. 10 is a schematic view of an operation control system of a compressor in another embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, an operation control method of a compressor includes steps S100, S200, and S300.

And step S100, acquiring input power supply information of the compressor.

Specifically, a three-phase alternating current power supply is a power supply composed of three alternating current potentials of the same frequency, of equal amplitude, and of phases sequentially different from each other by 120 °. The input power information is voltage information of an external alternating current power supply input to the compressor. It is to be understood that the type of the input power information is not unique, and in one embodiment, the input power information is a voltage waveform diagram, and in an example of three-phase sinusoidal alternating current, the corresponding input power information is a sinusoidal waveform diagram. It should be noted that the input power information is not obtained in a unique manner, and in one embodiment, a power information collector is disposed on a power input line of the compressor, and is configured to directly perform an operation of collecting the input power information and then send the collected power information to the controller for further analysis and processing. Further, in an embodiment, taking the input power as three-phase sinusoidal ac power as an example, the corresponding power information collector may be a sinusoidal ac reference phase angle generator. It can be understood that the collection operation of the power supply information collector is carried out in real time, and as long as an external power supply is connected into the compressor, the power supply information collector can collect and send the power supply information corresponding to the external power supply to the controller, so that the compressor can be timely controlled to take corresponding measures when the power supply is abnormal, and the operation reliability of the compressor is further improved.

And step S200, analyzing whether the phase angle of the input power supply of the compressor is symmetrical or not according to the information of the input power supply.

Specifically, taking the input power source as three-phase sinusoidal alternating current power, which is generated by a three-phase alternating current generator, the characteristics are that the maximum values (or effective values) of the sinusoidal alternating current power of the three phases are equal, and the phases are different by 1/3 cycles, namely 120 °. The phase sequence is a sequence of phases, i.e., a sequence of phases in which instantaneous values of respective phases of the three-phase alternating current are positive and maximum. As shown in the voltage phase angle vector diagram of fig. 2, in the clockwise direction, the voltage phase angles of the three phases a (i.e., UA), B (i.e., UB), and C (i.e., UC) differ by 120 ° in sequence, and at this time, the phase sequence of the input power is normal. In the voltage phase angle vector diagram shown in fig. 3, the phase angle between the a phase (i.e. UA1), the C phase (i.e. UC1) and the B phase (i.e. UB1) is significantly larger than 180 ° in the clockwise direction, and the phase sequence corresponding to the A, B, C three phases is abnormal, in which case the compressor will be reversed.

When the sine alternating current changes from the upper half wave to the lower half wave, A, B, C has a time difference (namely 1/3 cycles) in each phase change, and the phase angle changes regularly, and after the controller receives the power information, only the A, B, C three-phase change sequence needs to be detected, and whether the time difference between each phase is 1/3 cycles is judged, so that the information whether the input power phase angle is symmetrical can be obtained.

And step S300, when the phase angle of the input power supply is asymmetric, a locking control signal is sent to a locking shaft actuator of the compressor.

Specifically, the locking control signal is used for controlling a locking shaft actuator to lock a motor rotating shaft of a compressor body of the compressor. When the power supply phase angle is not symmetrical, if the compressor is continuously driven by the input power supply, the compressor is operated in reverse, and the compressor is easily worn. This application is provided with the lock axle executor in compressor body department, when the controller judges the phase angle asymmetry of input power according to input power supply information, under the control of controller, the lock axle executor can remove the motor shaft department of compressor body, with the motor shaft lock-rotor of compressor, is about to the motor shaft card of compressor and dies, prevents the inside motor operation of compressor, and then makes compressor stall.

It can be understood that, in one embodiment, after the motor shaft is locked so that the compressor stops operating, the controller can also send prompt information to a user, so that the user can check the inlet line circuit of the compressor in time and remove faults in time to ensure the operational reliability of the compressor.

Referring to fig. 4, in an embodiment, after step S300, the method further includes step S400 and step S500.

And step S400, obtaining the motor winding current of the compressor body. And S500, controlling the compressor to be powered off when the time length that the current of the motor winding is greater than the preset overcurrent protection threshold reaches the preset time length.

Specifically, the motor winding current is the current on the winding of the motor inside the compressor body. After the controller controls the lock shaft actuator to lock the motor rotating shaft, the motor rotating shaft cannot continue to rotate, the winding current of the motor can be increased, and the winding generates heat abnormally. In order to avoid burning of the compressor due to continuous heating, after the motor is locked, the controller can acquire the current of the motor winding of the compressor body in real time and compare and analyze the current with a preset overcurrent protection threshold value, so that the power supply of the compressor is cut off under the condition of overlarge current, and the compressor is prevented from being burnt due to the fact that the compressor is in an overcurrent power supply state for a long time.

Likewise, the manner in which the controller obtains the motor winding current is not exclusive, and in one embodiment, the current may be collected and transmitted by an overcurrent monitor disposed in the motor winding. Further, in an embodiment, the controller may receive the motor winding current and the preset overcurrent protection value to perform analysis when the compressor is in an operating state, that is, even if the motor rotating shaft is not blocked, the controller may also implement overcurrent detection of the compressor according to the overcurrent monitor during normal operation of the compressor, thereby further ensuring the operational reliability of the compressor.

It is to be understood that the size of the preset duration is not exclusive, and in one embodiment, the preset duration may be set to 3 seconds. When the controller analyzes the received current of the motor winding and a preset overcurrent protection threshold value to obtain that the current of the motor winding is larger than the preset overcurrent protection threshold value, the controller starts timing, and performs comparison analysis operation of the current of the motor winding and the preset overcurrent protection threshold value in real time in the timing process, if the current of the motor winding is larger than the preset overcurrent protection threshold value within 3 seconds, the controller cuts off a power supply of the compressor, and the compressor is prevented from being damaged due to overcurrent.

Referring to fig. 5, in an embodiment, after step S200, the method further includes step S600 and step S700.

And step S600, when the phase angles of the input power supply are symmetrical, detecting the locked rotor state of the rotating shaft of the motor.

Specifically, when the controller analyzes according to the input power information, the situation of symmetrical power phase angles also occurs, and at the moment, the controller further determines how to subsequently control the operation of the compressor according to the locked-rotor state of the motor rotating shaft. The controller obtains the input power information to carry out the operation of whether the phase angles of the input power are symmetrical or not in real time, so that the control operation of the corresponding controller can be distinguished according to different states of the motor rotating shaft under the state that the motor rotating shaft is locked by the shaft locking actuator or under the state that the motor of the compressor runs normally.

And step S700, when the rotating shaft of the motor is locked, an unlocking control signal is sent to the locking shaft actuator.

Specifically, the unlocking control signal is used for controlling the locking shaft actuator to interrupt locked rotation of the motor rotating shaft. The method is carried out under the condition that the shaft locking actuator blocks and locks the rotating shaft of the motor, at the moment, after the input power supply information of the compressor is re-detected or the compressor is re-electrified, the phase angle of the input power supply is in a symmetrical state, and the operation requirement of the compressor is met. Therefore, the controller sends an unlocking control signal to the lock shaft actuator at the moment, so that the motor rotating shaft is not limited by the lock shaft actuator and can normally rotate and run under the action of the driving signal.

It is understood that the type of the locking shaft actuator is not exclusive, as long as the locking shaft actuator can move to the motor rotating shaft of the compressor to lock the motor rotating shaft to prevent the motor rotating shaft from rotating under the driving of the locking control signal. For example, in one embodiment, the lock shaft actuator comprises a shell, an electromagnet and a movable iron core, wherein the shell is fixedly arranged on the compressor body, the electromagnet is connected with the controller, the electromagnet is arranged inside the shell, the movable iron core is movably accommodated in the shell, and when the electromagnet receives a locking control signal, the electromagnet is powered off to move the movable iron core to the motor rotating shaft so as to lock the motor rotating shaft; when the electromagnet receives the unlocking control signal, the electromagnet enables the movable iron core to move to the inside of the shell in an electrified mode, and the stalling of the motor rotating shaft is interrupted.

In order to ensure that the lock shaft actuator is clamped on the motor rotating shaft, the whole lock shaft actuator can not rotate along with the motor rotating shaft due to the driving of the motor, and the shell of the lock shaft actuator can be fixed on the compressor body. Meanwhile, in order to guarantee that the compressor can be clamped in two different working states of reverse rotation prevention and normal operation control under different signal effects, the movable iron core is adopted as a blocking device, and the movable control of the iron core is realized through the electromagnet.

Further, in an embodiment, in order to ensure that the locked shaft actuator can lock the motor shaft when the movable iron core moves to the corresponding position of the motor shaft, a part of the movable iron core, which is in contact with the motor shaft, has a polygonal plane top shaft structure, and a slot matched with the movable iron core is formed in the position of the motor shaft, which is in contact with the movable iron core.

Specifically, the polygonal flat top shaft structure is a shaft structure whose top surface is a planar polygonal shape, such as upper and lower bottom surfaces of a rectangular parallelepiped or upper and lower bottom surfaces of a polygonal prism. Compared with a cylindrical structure, the polygonal flat top shaft structure has a certain edge angle, and after the movable iron core is inserted into the corresponding clamping groove of the motor rotating shaft, the motor rotating shaft can be clamped, so that the clamping and blocking operation of the motor rotating shaft is realized.

It is understood that the specific shape of the polygonal flat top shaft structure is not exclusive, for example, in one embodiment, the portion of the movable iron core for blocking rotation in contact with the motor rotating shaft is provided as a prism structure or a pillar structure, etc., as long as it can be ensured that when the movable iron core of the portion is clamped into the clamping groove of the motor rotating shaft, the motor rotating shaft can be prevented from being prevented from rotating continuously. Further, in a more detailed embodiment, a portion of the movable iron core, which is used for being in contact with the rotating shaft of the motor to perform rotation blocking, may be set to be in a quadrangular prism shape, that is, a portion of the movable iron core, which is used for being in contact with the rotating shaft of the motor, is in a square plane top shaft structure.

In one embodiment, the number of lock shaft actuators is two or more.

Specifically, the locked-rotor operation of the motor rotating shaft is performed by arranging two or more lock shaft actuators, so that each lock shaft actuator only needs to share part of the rotating torque, and the locked-rotor operation of the motor rotating shaft is realized more easily. Correspondingly, each lock shaft actuator is provided with a corresponding clamping groove on the motor rotating shaft, and when the controller analyzes that the phase angle of the input power supply is asymmetric, a locking control signal is sent to at least one lock shaft actuator to control the corresponding lock shaft actuator to lock the motor rotating shaft of the compressor body of the compressor. It can be understood that in practical application, the shaft locking actuators can be specifically set according to user requirements and the like, and the motor rotating shaft can not rotate under the action of each shaft locking actuator.

In a preferred embodiment, since the number of the shaft locking actuators for the locked rotation operation of the motor rotating shaft is three, two shaft locking actuators may be respectively disposed at the positions corresponding to the side surfaces of the motor rotating shaft, and the last shaft locking actuator may be disposed at the position corresponding to the top surface of the motor rotating shaft. And then after each lock shaft actuator receives the locking control signal, the locked-rotor operation of the motor rotating shaft is realized simultaneously from the side surface and the top surface.

Referring to fig. 5, in an embodiment, after the step S200, the method further includes a step S800.

And step S800, controlling the compressor to operate according to preset operation parameters when the rotating shaft of the motor is not locked.

Specifically, the present embodiment is a detection operation performed on whether the phase angle of the input power supply is symmetrical or not under the condition that the shaft locking actuator does not lock the rotating shaft of the motor, and at this time, the compressor is only required to be controlled to continue to operate according to the preset operation parameters, and the shaft locking actuator is not required to be additionally controlled.

According to the operation control method of the compressor, the shaft locking actuator is arranged in the compressor, and when the compressor operates, whether the phase angle of the input power supply of the compressor is symmetrical or not can be detected according to the information of the input power supply of the compressor. And under the condition that the phase angle of the input power supply is asymmetric, the shaft locking actuator is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

Referring to fig. 6, an operation control apparatus for a compressor includes a power information obtaining module 100, a power phase angle detecting module 200, and a motor stalling control module 300.

The power information acquiring module 100 is configured to acquire input power information of the compressor; the power phase angle detection module 200 is used for analyzing whether the input power phase angle of the compressor is symmetrical according to the input power information; the motor stall control module 300 is configured to send a locking control signal to a shaft locking actuator of the compressor when the phase angle of the input power is asymmetric.

In one embodiment, referring to fig. 7, after the motor stalling control module 300, the operation control device of the compressor further includes a current analysis module 400. The current analysis module 400 is used for obtaining the motor winding current of the compressor body; and when the time length of the current of the motor winding which is greater than the preset overcurrent protection threshold reaches the preset time length, controlling the compressor to be powered off.

When the input power phase angle is symmetrical, the motor locked-rotor control module 300 is also used for detecting the locked-rotor state of the motor rotating shaft; when the rotating shaft of the motor is locked, an unlocking control signal is sent to a locking shaft actuator; and when the rotating shaft of the motor is not locked, controlling the compressor to operate according to preset operation parameters.

For specific limitations of the operation control device of the compressor, reference may be made to the above limitations of the operation control method of the compressor, which are not described herein again. The respective modules in the operation control apparatus of the compressor described above may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

The operation control device of the compressor is provided with the shaft locking actuator in the compressor, and when the compressor operates, whether the phase angle of the input power supply of the compressor is symmetrical or not can be detected according to the input power supply information of the compressor. And under the condition that the phase angle of the input power supply is asymmetric, the shaft locking actuator is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

Referring to fig. 8, an operation control system of a compressor includes: the power supply information collector 10, the lock shaft actuator 20 and the controller 30, wherein the power supply information collector 10 and the lock shaft actuator 20 are respectively connected with the controller 30, and the controller 30 is used for controlling the operation of the compressor according to the method.

Specifically, a three-phase alternating current power supply is a power supply composed of three alternating current potentials of the same frequency, of equal amplitude, and of phases sequentially different from each other by 120 °. The input power information is voltage information of an external alternating current power supply input to the compressor. It is to be understood that the type of the input power information is not unique, and in one embodiment, the input power information is a voltage waveform diagram, and in an example of three-phase sinusoidal alternating current, the corresponding input power information is a sinusoidal waveform diagram. It should be noted that the input power information is not obtained in an exclusive manner, and in one embodiment, the power information collector 10 is disposed on the power input line of the compressor, and directly performs the collection operation of the input power information, and then sends the collected power information to the controller 30 for further analysis and processing. Further, in one embodiment, taking the input power as three-phase sinusoidal ac power as an example, the corresponding power information collector 10 may be a sinusoidal ac reference phase angle generator. It can be understood that the collecting operation of the power information collector 10 is performed in real time, as long as an external power supply is connected to the compressor, the power information collector 10 can collect and send the power information corresponding to the external power supply to the controller 30, so that the compressor can be timely controlled to take corresponding measures when the power supply is abnormal, and the operation reliability of the compressor is further improved.

Taking the input power source as three-phase sinusoidal alternating current power as an example, the alternating current power is generated by a three-phase alternating current generator, and the characteristics are that the maximum values (or effective values) of the sinusoidal alternating current power of the three phases are equal, and the phases are different by 1/3 cycles, namely 120 degrees. The phase sequence is a sequence of phases, i.e., a sequence of phases in which instantaneous values of respective phases of the three-phase alternating current are positive and maximum. As shown in the voltage phase angle vector diagram of fig. 2, in the clockwise direction, the voltage phase angles of the three phases a (i.e., UA), B (i.e., UB), and C (i.e., UC) differ by 120 ° in sequence, and at this time, the phase sequence of the input power is normal. In the voltage phase angle vector diagram shown in fig. 3, the phase angle between the a phase (i.e. UA1), the C phase (i.e. UC1) and the B phase (i.e. UB1) is significantly larger than 180 ° in the clockwise direction, and the phase sequence corresponding to the A, B, C three phases is abnormal, in which case the compressor will be reversed.

When the sine alternating current changes from the upper half wave to the lower half wave, A, B, C has a time difference (i.e. 1/3 cycles) in each phase change, and the phase angle changes regularly, and after the controller 30 receives the power information, it only needs to detect A, B, C three-phase change sequence and determine whether the time difference between each phase is 1/3 cycles, so as to obtain information whether the input power phase angle is symmetrical.

When the power supply phase angle is not symmetrical, if the compressor is continuously driven by the input power supply, the compressor is operated in reverse, and the compressor is easily worn. This application is provided with lock axle executor 20 in compressor body department, and when controller 30 judged the phase angle asymmetry of input power according to input power supply information, under controller 30's control, lock axle executor 20 can remove the motor shaft department of compressor body, locked the motor shaft lock of compressor, and the motor shaft card that is about to the compressor dies, prevents the inside motor operation of compressor, and then makes compressor stall.

Referring to fig. 9, in an embodiment, the lock shaft actuator 20 includes a housing (not shown), an electromagnet 21 and a movable iron core 22, the housing is fixedly disposed on a compressor body (not shown), the electromagnet 21 is connected to the controller 30, the electromagnet 21 is disposed inside the housing, the movable iron core 22 is movably accommodated in the housing, and when the electromagnet 21 receives a lock control signal, the electromagnet 21 is de-energized to move the movable iron core 22 to a motor rotation shaft, so as to lock the motor rotation shaft; when the electromagnet 21 receives the unlocking control signal, the electromagnet 21 is electrified to move the movable iron core 22 to the inside of the shell, and the stalling of the motor rotating shaft is interrupted.

In order to ensure that the whole lock shaft actuator 20 will not rotate along with the motor rotating shaft due to the driving of the motor after the lock shaft actuator 20 is clamped to the motor rotating shaft, the housing of the lock shaft actuator 20 will be fixed to the compressor body. Meanwhile, in order to guarantee that the compressor can be clamped in two different working states of reverse rotation prevention and normal operation control under different signal effects, the movable iron core is adopted as a blocking device, and the movable control of the iron core is realized through the electromagnet. In one embodiment, the electromagnet 21 specifically includes an iron core and a coil, and when the coil is energized, a magnetic field is generated due to electromagnetic induction, and the moving control of the movable iron core 22 is realized by attracting the movable iron core 22. The manner of fixing the housing of the lock shaft actuator 20 to the compressor body is not exclusive, and in one embodiment, a bracket may be disposed between the housing of the lock shaft actuator 20 and the compressor body, and the lock shaft actuator 20 may be welded to the compressor body for fixing.

Further, in an embodiment, in order to ensure that the locked rotor 22 of the lock shaft actuator 20 can perform locked rotor operation of the motor shaft when moving to the corresponding position of the motor shaft, a portion of the movable rotor 22, which is in contact with the motor shaft, has a polygonal plane top shaft structure, and a slot matching with the movable rotor 22 is formed at a position of the motor shaft, which is in contact with the movable rotor 22.

Specifically, the polygonal flat top shaft structure is a shaft structure whose top surface is a planar polygonal shape, such as upper and lower bottom surfaces of a rectangular parallelepiped or upper and lower bottom surfaces of a polygonal prism. Compared with a cylindrical structure, the polygonal flat top shaft structure has a certain edge angle, and after the movable iron core 22 is inserted into the corresponding clamping groove of the motor rotating shaft, the motor rotating shaft can be clamped, so that the clamping and blocking operation of the motor rotating shaft is realized.

It is understood that the specific shape of the polygonal flat top shaft structure is not exclusive, for example, in one embodiment, the portion of the movable iron core 22 for locking rotation in contact with the motor rotating shaft is provided as a prism structure or a pillar structure, etc., as long as it can be ensured that when the movable iron core 22 of the portion is locked into the slot of the motor rotating shaft, the motor rotating shaft can be prevented from further rotating. Further, in a more detailed embodiment, a portion of the movable iron core 22 for locking rotation in contact with the motor rotating shaft may be set to be in a quadrangular prism shape, that is, a portion of the movable iron core 22 for contacting with the motor rotating shaft is in a square plane top shaft structure.

In one embodiment, the number of lock shaft actuators 20 is two or more.

Specifically, the locked-rotor operation of the motor rotating shaft is performed by arranging two or more lock shaft actuators 20, so that each lock shaft actuator 20 only needs to share part of the rotating torque, and the locked-rotor operation of the motor rotating shaft is more easily realized. Correspondingly, each lock shaft actuator 20 has a corresponding slot on the motor rotating shaft, and when the controller 30 analyzes that the phase angle of the input power supply is asymmetric, a locking control signal is sent to at least one lock shaft actuator 20 to control the corresponding lock shaft actuator 20 to lock the motor rotating shaft of the compressor body of the compressor. It can be understood that, in practical application, the shaft locking actuators 20 may be specifically set according to user requirements, and the like, as long as it is ensured that the rotating shaft of the motor does not rotate under the action of each shaft locking actuator 20.

As shown in fig. 10, in a preferred embodiment, since the number of the shaft locking actuators 20 for the locked rotation operation of the motor rotating shaft is three, two shaft locking actuators 20 may be respectively disposed at the positions corresponding to the side surfaces of the motor rotating shaft, and the last shaft locking actuator 20 may be disposed at the position corresponding to the top surface of the motor rotating shaft. And then, after each lock shaft actuator 20 receives the locking control signal, the locked rotation operation of the motor rotating shaft is simultaneously realized from the side surface and the top surface.

In the operation control system of the compressor, the shaft locking actuator 20 is arranged in the compressor, and when the compressor operates, whether the phase angle of the input power supply of the compressor is symmetrical can be detected according to the information of the input power supply of the compressor. And under the condition that the phase angle of the input power supply is not symmetrical, the shaft locking actuator 20 is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

A compressor comprises a compressor body and the operation control system.

Specifically, the specific structure of the operation control system is as shown in fig. 8 or fig. 10, and the three-phase alternating-current power supply is a power supply composed of three alternating-current potentials having the same frequency, the same amplitude, and phases sequentially different from each other by 120 °. The input power information is voltage information of an external alternating current power supply input to the compressor. It is to be understood that the type of the input power information is not unique, and in one embodiment, the input power information is a voltage waveform diagram, and in an example of three-phase sinusoidal alternating current, the corresponding input power information is a sinusoidal waveform diagram. It should be noted that the input power information is not obtained in an exclusive manner, and in one embodiment, the power information collector 10 is disposed on the power input line of the compressor, and directly performs the collection operation of the input power information, and then sends the collected power information to the controller 30 for further analysis and processing. Further, in one embodiment, taking the input power as three-phase sinusoidal ac power as an example, the corresponding power information collector 10 may be a sinusoidal ac reference phase angle generator. It can be understood that the collecting operation of the power information collector 10 is performed in real time, as long as an external power supply is connected to the compressor, the power information collector 10 can collect and send the power information corresponding to the external power supply to the controller 30, so that the compressor can be timely controlled to take corresponding measures when the power supply is abnormal, and the operation reliability of the compressor is further improved.

Taking the input power source as three-phase sinusoidal alternating current power as an example, the alternating current power is generated by a three-phase alternating current generator, and the characteristics are that the maximum values (or effective values) of the sinusoidal alternating current power of the three phases are equal, and the phases are different by 1/3 cycles, namely 120 degrees. The phase sequence is a sequence of phases, i.e., a sequence of phases in which instantaneous values of respective phases of the three-phase alternating current are positive and maximum. As shown in the voltage phase angle vector diagram of fig. 2, in the clockwise direction, the voltage phase angles of the three phases a (i.e., UA), B (i.e., UB), and C (i.e., UC) differ by 120 ° in sequence, and at this time, the phase sequence of the input power is normal. In the voltage phase angle vector diagram shown in fig. 3, the phase angle between the a phase (i.e. UA1), the C phase (i.e. UC1) and the B phase (i.e. UB1) is significantly larger than 180 ° in the clockwise direction, and the phase sequence corresponding to the A, B, C three phases is abnormal, in which case the compressor will be reversed.

When the sine alternating current changes from the upper half wave to the lower half wave, A, B, C has a time difference (i.e. 1/3 cycles) in each phase change, and the phase angle changes regularly, and after the controller 30 receives the power information, it only needs to detect A, B, C three-phase change sequence and determine whether the time difference between each phase is 1/3 cycles, so as to obtain information whether the input power phase angle is symmetrical.

When the power supply phase angle is not symmetrical, if the compressor is continuously driven by the input power supply, the compressor is operated in reverse, and the compressor is easily worn. This application is provided with lock axle executor 20 in compressor body department, and when controller 30 judged the phase angle asymmetry of input power according to input power supply information, under controller 30's control, lock axle executor 20 can remove the motor shaft department of compressor body, locked the motor shaft lock of compressor, and the motor shaft card that is about to the compressor dies, prevents the inside motor operation of compressor, and then makes compressor stall.

The compressor is provided with a shaft locking actuator 20, and when the compressor runs, whether the phase angle of the input power supply of the compressor is symmetrical can be detected according to the information of the input power supply of the compressor. And under the condition that the phase angle of the input power supply is not symmetrical, the shaft locking actuator 20 is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

An air conditioner comprises the compressor.

Specifically, the compressor in the air conditioner adopts the above structure, and the three-phase alternating-current power supply is a power supply composed of three alternating-current potentials which have the same frequency, the same amplitude, and the phases which are sequentially different from each other by 120 °. The input power information is voltage information of an external alternating current power supply input to the compressor. It is to be understood that the type of the input power information is not unique, and in one embodiment, the input power information is a voltage waveform diagram, and in an example of three-phase sinusoidal alternating current, the corresponding input power information is a sinusoidal waveform diagram. It should be noted that the input power information is not obtained in an exclusive manner, and in one embodiment, the power information collector 10 is disposed on the power input line of the compressor, and directly performs the collection operation of the input power information, and then sends the collected power information to the controller 30 for further analysis and processing. Further, in one embodiment, taking the input power as three-phase sinusoidal ac power as an example, the corresponding power information collector 10 may be a sinusoidal ac reference phase angle generator. It can be understood that the collecting operation of the power information collector 10 is performed in real time, as long as an external power supply is connected to the compressor, the power information collector 10 can collect and send the power information corresponding to the external power supply to the controller 30, so that the compressor can be timely controlled to take corresponding measures when the power supply is abnormal, and the operation reliability of the compressor is further improved.

Taking the input power source as three-phase sinusoidal alternating current power as an example, the alternating current power is generated by a three-phase alternating current generator, and the characteristics are that the maximum values (or effective values) of the sinusoidal alternating current power of the three phases are equal, and the phases are different by 1/3 cycles, namely 120 degrees. The phase sequence is a sequence of phases, i.e., a sequence of phases in which instantaneous values of respective phases of the three-phase alternating current are positive and maximum. As shown in the voltage phase angle vector diagram of fig. 2, in the clockwise direction, the voltage phase angles of the three phases a (i.e., UA), B (i.e., UB), and C (i.e., UC) differ by 120 ° in sequence, and at this time, the phase sequence of the input power is normal. In the voltage phase angle vector diagram shown in fig. 3, the phase angle between the a phase (i.e. UA1), the C phase (i.e. UC1) and the B phase (i.e. UB1) is significantly larger than 180 ° in the clockwise direction, and the phase sequence corresponding to the A, B, C three phases is abnormal, in which case the compressor will be reversed.

When the sine alternating current changes from the upper half wave to the lower half wave, A, B, C has a time difference (i.e. 1/3 cycles) in each phase change, and the phase angle changes regularly, and after the controller 30 receives the power information, it only needs to detect A, B, C three-phase change sequence and determine whether the time difference between each phase is 1/3 cycles, so as to obtain information whether the input power phase angle is symmetrical.

When the power supply phase angle is not symmetrical, if the compressor is continuously driven by the input power supply, the compressor is operated in reverse, and the compressor is easily worn. This application is provided with lock axle executor 20 in compressor body department, and when controller 30 judged the phase angle asymmetry of input power according to input power supply information, under controller 30's control, lock axle executor 20 can remove the motor shaft department of compressor body, locked the motor shaft lock of compressor, and the motor shaft card that is about to the compressor dies, prevents the inside motor operation of compressor, and then makes compressor stall.

The air conditioner is provided with a shaft locking actuator 20, and when the compressor runs, whether the phase angle of the input power supply of the compressor is symmetrical can be detected according to the information of the input power supply of the compressor. And under the condition that the phase angle of the input power supply is not symmetrical, the shaft locking actuator 20 is directly controlled to block the rotating shaft of the motor of the compressor body, so that the operation of the compressor is prevented, and the reverse rotation operation of the compressor is also prevented. Through the scheme, the compressor is provided with a reverse rotation defense mechanism, the compressor can be blocked and rotated in time under the condition that the input power supply is in error, reverse rotation abrasion of the compressor is avoided, and operation reliability of the compressor is effectively improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.