Control system and dough mixer

Abstract

The utility model provides a control system and a dough mixer, the control system is applied to the dough mixer, and the control system comprises a power supply module, a switch module and a detection module; the first end of the power supply module is connected with one end of the three-phase motor; the first end of the switch module is connected with the second end of the power supply module, the second end of the switch module is connected with the third end of the power supply module, and the third end and the fourth end of the switch module are connected with the other end of the three-phase motor; and one end of the detection module is connected with the second end of the power supply module, the other end of the detection module is connected with the fifth end of the switch module, and the detection module is used for detecting the voltage of the power supply module and controlling the on-off of the switch module according to a detection result. The control system can detect the voltage and turn off the switch module in time when the three-phase motor is open in phase, so that the control loop is switched off, the problem that the coil of the three-phase motor is damaged due to the open phase of the three-phase motor is avoided, the service life of the three-phase motor is ensured, and the equipment safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-phase motor, and more particularly, to a control system and a flour mixing machine. BACKGROUND

[0002] The flour mixing machine is widely used in canteens and other places to replace manpower, and is usually controlled by a control circuit composed of phase A in a three-phase power supply and a zero line to control the working state of the flour mixing machine.

[0003] However, when any one phase of the three phases (A phase, B phase and C phase) corresponding to the three-phase motor in the flour mixing machine is missing, the control circuit will be abnormal, thereby affecting the normal use of the flour mixing machine, causing the flour mixing machine to fail to work normally, and in severe cases, even damaging the three-phase motor and reducing the service life of the three-phase motor. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a control system and a flour mixing machine, which aims to solve the problem that the flour mixing machine fails to work normally when any one phase of the three-phase motor is missing.

[0005] In a first aspect, a control system is provided, comprising a power supply module, a switch module and a detection module; a first end of the power supply module is connected to one end of a three-phase motor; a first end of the switch module is connected to a second end of the power supply module, a second end of the switch module is connected to a third end of the power supply module, a third end of the switch module and a fourth end of the switch module are connected to the other end of the three-phase motor; one end of the detection module is connected to the second end of the power supply module, the other end of the detection module is connected to a fifth end of the switch module, and the detection module is used to detect the voltage of the power supply module and control the on-off of the switch module according to the detection result.

[0006] In the above technical solution, the detection module can detect in real time whether the voltage of the power supply module is abnormal, and when the voltage is detected to be abnormal, the switch module can be turned off in time to disconnect the control circuit and avoid the problem that the coil of the three-phase motor is damaged due to the missing phase, so as to ensure the service life of the three-phase motor and improve the safety of the equipment. For example, assuming that the detection result indicates that the voltage of the power supply module is abnormal, i.e. one phase of the three-phase motor is missing and has no voltage, at this time, the detection module controls the switch module to be turned off, so that the control circuit is disconnected and the three-phase motor does not work, thereby avoiding the problem that the coil of the three-phase motor is damaged due to the missing phase, ensuring the service life of the three-phase motor and improving the safety of the equipment. Assuming that the detection result indicates that the voltage of the power supply module is normal, the detection module controls the switch module to be turned on, so that the control circuit is connected and the three-phase motor works normally, thereby ensuring the normal use of the three-phase motor.

[0007] With reference to the first aspect, in some possible implementation manners, the power supply module comprises a power supply voltage unit and a three-phase power supply unit; a first output end, a second output end and a third output end of the three-phase power supply unit are connected to an A phase, a B phase and a C phase of the three-phase motor respectively; and an output end of the power supply voltage unit and the first output end of the three-phase power supply unit are connected to a third end of the switch module respectively, the second output end and the third output end of the three-phase power supply unit are connected to a second end of the switch module and one end of the detection module respectively.

[0008] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the switch module comprises a first switch unit and a second switch unit; a first end of the first switch unit is connected to the output end of the power supply voltage unit and the first output end of the three-phase power supply unit, a second end of the first switch unit is connected to the other end of the three-phase motor, and a controlled end of the first switch unit is connected to the other end of the detection module; a first end of the second switch unit is connected to the second output end and the third output end of the three-phase power supply unit, a second end of the second switch unit is connected to the other end of the three-phase motor, and a controlled end of the second switch unit is connected to the other end of the detection module.

[0009] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the first switch unit comprises a first sub-switch and a second sub-switch; a first end of the first sub-switch is connected to the output end of the power supply voltage unit, a second end of the first sub-switch is connected to the other end of the three-phase motor, and a controlled end of the first sub-switch is connected to the other end of the detection module; a first end of the second sub-switch is connected to the first output end of the three-phase power supply unit, a second end of the second sub-switch is connected to the other end of the three-phase motor, and a controlled end of the second sub-switch is connected to the other end of the detection module.

[0010] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the second switch unit comprises a third sub-switch and a fourth sub-switch; a first end of the third sub-switch is connected to the second output end of the three-phase power supply unit, a second end of the third sub-switch is connected to the other end of the three-phase motor, and a controlled end of the third sub-switch is connected to the other end of the detection module; a first end of the fourth sub-switch is connected to the third output end of the three-phase power supply unit, a second end of the fourth sub-switch is connected to the other end of the three-phase motor, and a controlled end of the fourth sub-switch is connected to the other end of the detection module.

[0011] With reference to the first aspect and the above implementation manners, in some possible implementation manners, the detection module comprises a first detection unit and a second detection unit; a first end of the first detection unit is connected to the third output end of the three-phase power supply unit, and a second end of the first detection unit is connected to the controlled end of the first switch unit; a first end of the second detection unit is connected to the third end of the first detection unit, and a second end of the second detection unit is connected to the controlled end of the second switch unit.

[0012] With the first aspect and the above implementation manners, in some possible implementation manners, the control system further includes a switching element, a first end of the switching element being connected with the third output end of the three-phase power supply unit, and a second end of the switching element being connected with the first end of the first detection unit.

[0013] In a second aspect, the application provides a dough mixer, including the control system of any one of the optional manners of the first aspect and the three-phase motor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of a dough mixer provided by an embodiment of the application;

[0015] Figure 2 is a structural schematic diagram of another dough mixer provided by an embodiment of the application;

[0016] Figure 3 is a structural schematic diagram of another dough mixer provided by an embodiment of the application;

[0017] Figure 4 is a structural schematic diagram of another dough mixer provided by an embodiment of the application;

[0018] Figure 5 is a structural schematic diagram of another dough mixer provided by an embodiment of the application;

[0019] Figure 6 is a structural schematic diagram of another dough mixer provided by an embodiment of the application;

[0020] Figure 7 is a structural schematic diagram of another dough mixer provided by an embodiment of the application.

[0021] In the drawings, various reference signs represent:

[0022] 1, control system; 11, power supply module; 111, power voltage unit; 112, three-phase power supply unit; 12, switching module; 121, first switching unit; 122, second switching unit; 13, detection module; 131, first detection unit; 132, second detection unit; 2, three-phase motor; 14, switching element;

[0023] N, zero line; K1, first sub-switch; K2, second sub-switch; K3, third sub-switch; K4, fourth sub-switch. DETAILED DESCRIPTION

[0024] The technical solutions in the present application will be clearly and completely described below with reference to the drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B: "and / or" in the text only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0025] Hereinafter, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.

[0026] The dough mixer is widely used in places such as canteens instead of manpower, and a three-phase motor is usually provided in the dough mixer. The three phases (A phase, B phase and C phase) in the three-phase motor are respectively connected with a three-phase power supply of 380V (volts). Among them, the A phase in the three-phase power supply and the zero line N of 220V will form a control loop. A contactor is provided on the control loop, and the working state of the dough mixer is controlled by controlling the action of the contactor coil.

[0027] However, when any one phase of the three phases (A phase, B phase and C phase) corresponding to the three-phase motor in the dough mixer is missing, if the three-phase motor continues to be used at this time, it will affect the normal use of the dough mixer. For example, when the A phase of the three-phase is missing and has no voltage, the contactor on the control loop cannot be attracted, so the dough mixer cannot work. For another example, when the B phase and C phase of the three-phase are missing and have no voltage, it may cause the control loop where the contactor is located to be missing. If the three-phase motor continues to work at this time, it will cause the control loop to be abnormal, and in severe cases, it may even damage the coil of the three-phase motor, reduce the service life of the three-phase motor, and the safety of the equipment is low. Therefore, when any one phase of the dough mixer is missing, it will cause the contactor or the control loop to be abnormal, and then affect the normal use of the dough mixer, causing the dough mixer to work abnormally.

[0028] Therefore, the embodiments of the present application provide a control system and a dough mixer. The control system can detect the voltage and turn off the switch module in time when the three-phase motor is missing, so as to disconnect the control loop, avoid the problem that the coil of the three-phase motor is damaged due to the missing of the three-phase motor, and ensure the service life of the three-phase motor and improve the safety of the equipment.

[0029] The control system and the dough mixer provided by the present application will be described below with reference to the drawings.

[0030] As shown in Figure 1As shown, the embodiment of the present application provides a flour mixing machine, which comprises a control system 1 and a three-phase motor 2. The control system 1 is used to provide power supply for the three-phase motor 2 and control the working state of the three-phase motor 2. In one example, as shown in the figure, Figure 2 As shown, the control system 1 can comprise a power supply module 11, a switch module 12 and a detection module 13. One end of the power supply module 11 is connected with one end of the three-phase motor 2. The first end of the switch module 12 is connected with the second end of the power supply module 11. The second end of the switch module 12 is connected with the third end of the power supply module 11. The third end of the switch module 12 and the fourth end of the switch module 12 are connected with the other end of the three-phase motor 2. One end of the detection module 13 is connected with the second end of the power supply module 11. The other end of the detection module 13 is connected with the fifth end of the switch module 12.

[0031] In this example, the power supply module 11 and the switch module 12 together constitute a control loop to control the working state of the three-phase motor 2. The power supply module 11 is used to provide power supply for the three-phase motor 2 when the three-phase motor 2 works, so that the three-phase motor 2 can work normally. The detection module 13 can detect the voltage of the power supply module 11 and control the on-off of the switch module 12 according to the detection result. For example, when the detection result indicates that the voltage of the power supply module 11 is abnormal, i.e. one phase of the three-phase motor 2 is missing and has no voltage, at this time, the detection module 13 controls the switch module 12 to be disconnected, so that the control loop is disconnected, and the three-phase motor 2 is not working and is in a shutdown state, so as to avoid the problem that the coil of the three-phase motor 2 is damaged due to the missing phase of the three-phase motor 2, so as to ensure the service life of the three-phase motor 2 and improve the safety of the equipment. When the detection result indicates that the voltage of the power supply module 11 is normal, the detection module 13 controls the switch module 12 to be turned on, so that the control loop is connected, and the three-phase motor 2 works normally, so as to ensure the normal use of the three-phase motor 2.

[0032] In this way, the detection module 13 can detect whether the voltage of the power supply module 11 is abnormal in real time. When the voltage is detected to be abnormal, the switch module 12 can be disconnected in time to disconnect the control loop, so as to avoid the problem that the coil of the three-phase motor 2 is damaged due to the missing phase of the three-phase motor 2, so as to ensure the service life of the three-phase motor 2 and improve the safety of the equipment.

[0033] In one example, as shown in the figure, Figure 3As shown, the power module 11 can include a power voltage unit 111 and a three-phase power unit 112, the first output end, the second output end and the third output end of the three-phase power unit 112 are connected to the A phase, the B phase and the C phase of the three-phase motor 2 respectively, the output end of the power voltage unit 111 and the first output end of the three-phase power unit 112 are connected to the third end of the switch module 12 respectively, the second output end of the three-phase power unit 112 and the third output end of the three-phase power unit 112 are connected to the second end of the switch module 12 and one end of the detection module 13 respectively. In this example, the output end of the power voltage unit 111 and the first output end of the three-phase power unit 112 constitute the main loop of the control loop, which is used to control the operation of the three-phase motor 2.

[0034] Here, it is worth mentioning that the power voltage unit 111 can include a 220V zero line, and the three-phase power unit 112 can include a 380V power supply.

[0035] When the A phase corresponding to the first output end of the three-phase power unit 112 is missing, it will cause the three-phase motor 2 to be damaged. In order to accurately control the on-off of the main loop to avoid the problem that the first output end of the three-phase power unit 112 is missing and causes the three-phase motor 2 to be damaged, in one example, as shown in Figure 4 As shown, the switch module 12 can include a first switch unit 121 and a second switch unit 122. The first end of the first switch unit 121 is connected to the output end of the power voltage unit 111 and the first output end of the three-phase power unit 112, the second end of the first switch unit 121 is connected to the other end of the three-phase motor 2, the controlled end of the first switch unit 121 is connected to the other end of the detection module 13, the first end of the second switch unit 122 is connected to the second output end of the three-phase power unit 112 and the third output end of the three-phase power unit 112, the second end of the second switch unit 122 is connected to the other end of the three-phase motor 2, and the controlled end of the second switch unit 122 is connected to the other end of the detection module 13. In this way, the detection module 13 can control the on-off of the first switch unit 121 and the second switch unit 122 according to the detection result, so as to realize the control of the on-off of the main loop and the loop where the second output end and the third output end of the three-phase power unit 112 are located.

[0036] Here, it is worth mentioning that as long as the detection module 13 detects voltage abnormalities (i.e. there is a missing phase), it will send a shutdown signal to the first switch unit 121 and the second switch unit 122 at the same time, so that the first switch unit 121 and the second switch unit 122 are disconnected, that is, if the B phase or the C phase corresponding to the second output end of the three-phase power unit 112 or the third output end of the three-phase power unit 112 is missing, the main loop also needs to be disconnected, that is, the first switch unit 121 is disconnected, so as to avoid the problem that the missing phase causes the three-phase motor 2 to be damaged and affects the normal use of the waffle maker.

[0037] For example, such as Figure 5 As shown, the first switching unit 121 may include a first sub-switch K1. The first end of the first sub-switch K1 is connected to the output terminal of the power supply voltage unit 111, the second end of the first sub-switch K1 is connected to the other end of the three-phase motor 2, and the controlled end of the first sub-switch K1 is connected to the other end of the detection module 13. The first end of the second sub-switch K2 is connected to the first output terminal of the three-phase power supply unit 112, the second end of the second sub-switch K2 is connected to the other end of the three-phase motor 2, and the controlled end of the second sub-switch K2 is connected to the other end of the detection module 13. Thus, the output terminal of the power supply voltage unit 111 and the first output terminal of the three-phase power supply unit 112 each correspond to a switch, realizing control of a single circuit and improving control accuracy.

[0038] Optionally, the first sub-switch K1 and the second sub-switch K2 can be contactors or other devices or circuits capable of performing the above functions. This application does not impose specific limitations on this.

[0039] For example, such as Figure 5 As shown, the second switching unit 122 may include a third sub-switch K3 and a fourth sub-switch K4. The first end of the third sub-switch K3 is connected to the second output end of the three-phase power supply unit 112, the second end of the third sub-switch K3 is connected to the other end of the three-phase motor 2, and the controlled end of the third sub-switch K3 is connected to the other end of the detection module 13. The first end of the fourth sub-switch K4 is connected to the third output end of the three-phase power supply unit 112, the second end of the fourth sub-switch K4 is connected to the other end of the three-phase motor 2, and the controlled end of the fourth sub-switch K4 is connected to the other end of the detection module 13. Thus, the second and third output ends of the three-phase power supply unit 112 each correspond to a switch, realizing control of a single circuit and improving control accuracy.

[0040] Optionally, the third sub-switch K3 and the fourth sub-switch K4 can be contactors or other devices or circuits capable of performing the above functions. This application does not impose specific limitations on them.

[0041] In one example, such as Figure 6As shown, the detection module 13 can include a first detection unit 131 and a second detection unit 132, a first end of the first detection unit 131 is connected with the third output end of the three-phase power supply unit 112, a second end of the first detection unit 131 is connected with the controlled end of the first switch unit 121, a first end of the second detection unit 132 is connected with the third end of the first detection unit 131, and a second end of the second detection unit 132 is connected with the controlled end of the second switch unit 122. The first detection unit 131 and the second detection unit 132 are independent, and the on-off control of the first switch unit 121 and the second switch unit 122 is realized, so as to further improve the control accuracy of the control loop.

[0042] In order to avoid the energy loss caused by the continuous detection of the detection module 13 in the shutdown state of the dough mixer, in an example, as shown in Figure 7 As shown, the control system 1 can further include a switch element 14, a first end of the switch element 14 is connected with the third output end of the three-phase power supply unit 112, and a second end of the switch element 14 is connected with the first end of the first detection unit 131. When the dough mixer is in the shutdown state, the voltage does not need to be detected, and therefore a turn-off signal can be sent to the switch element 14 to turn off the switch element 14, so as to disconnect the loop in which the switch element 14 is located, and at this time the detection module 13 stops detection and work, so as to reduce the energy loss of the detection module 13.

[0043] In summary, in the dough mixer provided by the embodiment of the present application, the detection module 13 can detect whether the voltage of the power supply module 11 is abnormal in real time, when the voltage is detected to be abnormal (i.e. there is a phase missing), the switch module 12 can be turned off in time to disconnect the control loop, so as to avoid the problem that the coil of the three-phase motor 2 is damaged due to the phase missing of the three-phase motor 2, so as to ensure the service life of the three-phase motor 2 and improve the safety of the equipment.

[0044] Through the description of the above embodiments, those skilled in the art can understand that, for the convenience and brevity of description, only the division of the above functional modules is taken as an example for illustration, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0045] In the embodiments of the present disclosure, it should be understood that the disclosed apparatus and method can be implemented in other ways. For example, the apparatus embodiments described above are merely schematic, and the division of the modules or units is merely a logical function division. In actual implementation, another division manner can be adopted, for example, a plurality of units or components can be combined or integrated into another apparatus, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, apparatuses or units, and can be electrical, mechanical or in other forms.

[0046] The above merely describes specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A control system, applied to a dough mixer, said dough mixer comprising a three-phase electric motor (2), characterized in that, The control system (1) comprises: a power module (11), one end of the power module (11) being connected with one end of the three-phase motor (2); a switch module (12), one end of the switch module (12) being connected with the second end of the power module (11), the second end of the switch module (12) being connected with the third end of the power module (11), the third end of the switch module (12) and the fourth end of the switch module (12) being connected with the other end of the three-phase motor (2); and a detection module (13), one end of the detection module (13) being connected with the second end of the power module (11), the other end of the detection module (13) being connected with the fifth end of the switch module (12), the detection module (13) being used for detecting the voltage of the power module (11) and controlling the on-off of the switch module (12) according to the detection result.

2. The control system of claim 1, wherein, The power module (11) comprises: a power voltage unit (111); and a three-phase power unit (112), the first output end, the second output end and the third output end of the three-phase power unit (112) being connected with the A phase, the B phase and the C phase of the three-phase motor (2) respectively; wherein the output end of the power voltage unit (111) and the first output end of the three-phase power unit (112) are connected with the third end of the switch module (12) respectively, the second output end of the three-phase power unit (112) and the third output end of the three-phase power unit (112) are connected with the second end of the switch module (12) and one end of the detection module (13) respectively.

3. The control system of claim 2, wherein, The switch module (12) comprises: a first switch unit (121), the first end of the first switch unit (121) being connected with the output end of the power voltage unit (111) and the first output end of the three-phase power unit (112), the second end of the first switch unit (121) being connected with the other end of the three-phase motor (2), the controlled end of the first switch unit (121) being connected with the other end of the detection module (13); and a second switch unit (122), the first end of the second switch unit (122) being connected with the second output end of the three-phase power unit (112) and the third output end of the three-phase power unit (112), the second end of the second switch unit (122) being connected with the other end of the three-phase motor (2), the controlled end of the second switch unit (122) being connected with the other end of the detection module (13).

4. The control system of claim 3, wherein, The first switch unit (121) comprises: a first sub-switch, the first end of the first sub-switch being connected with the output end of the power voltage unit (111), the second end of the first sub-switch being connected with the other end of the three-phase motor (2), the controlled end of the first sub-switch being connected with the other end of the detection module (13); and a second sub-switch, the first end of the second sub-switch being connected with the second output end of the three-phase power unit (112) and the third output end of the three-phase power unit (112), the second end of the second sub-switch being connected with the other end of the three-phase motor (2), the controlled end of the second sub-switch being connected with the other end of the detection module (13). A second sub-switch, a first end of the second sub-switch is connected with a first output end of the three-phase power supply unit (112), a second end of the second sub-switch is connected with another end of the three-phase motor (2), and a controlled end of the second sub-switch is connected with another end of the detection module (13).

5. The control system of claim 3, wherein, The second switch unit (122) comprises: A third sub-switch, a first end of the third sub-switch is connected with a second output end of the three-phase power supply unit (112), a second end of the third sub-switch is connected with another end of the three-phase motor (2), and a controlled end of the third sub-switch is connected with another end of the detection module (13); and, A fourth sub-switch, a first end of the fourth sub-switch is connected with a third output end of the three-phase power supply unit (112), a second end of the fourth sub-switch is connected with another end of the three-phase motor (2), and a controlled end of the fourth sub-switch is connected with another end of the detection module (13).

6. The control system of claim 3, wherein, The detection module (13) comprises: A first detection unit (131), a first end of the first detection unit (131) is connected with the third output end of the three-phase power supply unit (112), and a second end of the first detection unit (131) is connected with the controlled end of the first switch unit (121); and, A second detection unit (132), a first end of the second detection unit (132) is connected with a third end of the first detection unit (131), and a second end of the second detection unit (132) is connected with the controlled end of the second switch unit (122).

7. The control system of claim 6, wherein, The control system (1) further comprises: A switch element (14), a first end of the switch element (14) is connected with the third output end of the three-phase power supply unit (112), and a second end of the switch element (14) is connected with the first end of the first detection unit (131).

8. A dough mixer characterized by comprising: The control system (1) and the three-phase motor (2) as claimed in any one of claims 1-7. The control system (1) and the three-phase motor (2) as claimed in any one of claims 1-7.

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