CN212849869U - Power supply control circuit and cooking equipment - Google Patents
Power supply control circuit and cooking equipment Download PDFInfo
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- CN212849869U CN212849869U CN202021880792.3U CN202021880792U CN212849869U CN 212849869 U CN212849869 U CN 212849869U CN 202021880792 U CN202021880792 U CN 202021880792U CN 212849869 U CN212849869 U CN 212849869U
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Abstract
The utility model relates to a power supply control circuit and cooking equipment, the power supply control circuit includes first power, first switch and second switch, the first power is connected with the first switch, the second switch is connected with the first power and the first switch respectively, the second switch is also used for connecting with the first actuating mechanism; the first power supply is used for supplying power to the second switch and the first actuating mechanism; when the first switch is in an off state, the second switch is disconnected with the first power supply; the second switch is used for disconnecting the first actuating mechanism from the first power supply when the first power supply stops supplying power, so that the first actuating mechanism stops working. The power supply control circuit can prevent safety accidents of the first actuating mechanism through sudden stop, and meanwhile, the normal operation of the safety mechanism is guaranteed.
Description
Technical Field
The utility model relates to a power supply technical field, in particular to power supply control circuit cooking equipment.
Background
Along with the popularization of intelligent electrical equipment, the power utilization safety of the intelligent electrical equipment is more and more concerned. Smart electrical devices typically have various mechanisms that perform different functions, each with a different level of security. When various mechanisms work simultaneously and some actuating mechanisms have safety accidents, the traditional power supply control circuit carries out emergency power failure treatment on all the actuating mechanisms, but for some actuating mechanisms with low safety level, the emergency power failure can not cause the safety accidents, and the interruption of the actuating functions of the actuating mechanisms can be caused, so that the multifunctional development of intelligent electrical equipment is not facilitated.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a power supply control circuit for solving the problem that the execution function of an execution mechanism with a low safety level is interrupted due to emergency power failure processing of all execution mechanisms when a conventional power supply control circuit is in an emergency stop.
A power supply control circuit comprises a first power supply, a first switch and a second switch, wherein the first power supply is connected with the first switch, the second switch is respectively connected with the first power supply and the first switch, and the second switch is also used for being connected with a first execution mechanism;
the first power supply is used for supplying power to the second switch and the first actuating mechanism;
when the first switch is in an off state, the second switch is disconnected from the first power supply;
the second switch is used for disconnecting the first actuating mechanism from the first power supply when the first power supply stops supplying power, so that the first actuating mechanism stops working.
According to the power supply control circuit, the second switches are arranged between the first switch and the first power supply and between the first power supply and the first execution mechanism, and then when the first switch is in a disconnected state, the second switch is disconnected from the first power supply, so that the first power supply stops supplying power to the second switch, the second switch is disconnected from the first execution mechanism and the first power supply, so that the first power supply stops supplying power to the first execution mechanism, the first execution mechanism stops working, and safety accidents of the first execution mechanism can be prevented.
In one embodiment, the controller further comprises a main controller, the main controller is connected with the first switch, the main controller is further used for being connected with the first executing mechanism, and the main controller is used for controlling the first executing mechanism to stop working when the first switch is detected to be in an off state.
In one embodiment, the control device further comprises a second power source and the first switch is used for forming a loop with a second actuator, the second power source is used for supplying power to the second actuator, and the first switch is used for disconnecting the second power source from the second actuator so as to stop the second actuator when in an off state.
In one embodiment, the first switches are emergency stop switches, and/or the number of the first switches is at least two, and a plurality of the first switches are connected in series.
In one embodiment, the second switch is a relay, the relay includes a coil and a contact group, one end of the coil is connected to the first switch, the other end of the coil is connected to the first power supply, one end of the contact group is connected to the first power supply, and the other end of the contact group is used for being connected to the first actuator.
In one embodiment, the number of the relays is two, the coils of the two relays are connected in series, and the contact sets of the two relays are connected in series.
In one embodiment, the voltage of the first power supply is 24V.
In one embodiment, the power supply further comprises a conversion unit, the conversion unit is used for being connected with a mains supply and the first power supply, and the conversion unit is used for performing voltage reduction and rectification processing on an alternating-current mains supply to obtain direct current and transmitting the direct current to the first power supply.
In one embodiment, the power supply device further comprises a contactor, the contactor is connected with the first power supply, the contactor is further used for being connected with the first execution mechanism and a mains supply respectively, and the contactor is conducted under the power supply of the first power supply, so that the mains supply supplies power to the first execution mechanism.
A cooking device comprises a first actuating mechanism and the power supply control circuit.
Drawings
Fig. 1 is a circuit diagram of a conventional power supply control circuit;
fig. 2 is a schematic block diagram of a power supply control circuit provided in an embodiment of the present application;
fig. 3 is a schematic block diagram of a power supply control circuit provided in an embodiment of the present application;
fig. 4 is a schematic block diagram of a power supply control circuit provided in an embodiment of the present application;
fig. 5 is a circuit diagram of a power supply control circuit according to an embodiment of the present application;
fig. 6 is a schematic block diagram of a power supply control circuit according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Intelligent electrical equipment typically has various mechanisms for performing different functions, such as an automatic cooking device having a clamping mechanism, a material taking mechanism, a blanking mechanism, a rotating mechanism, a heating mechanism, a cooking mechanism, a heat preservation mechanism, a refrigeration mechanism, and the like. Each mechanism of the intelligent electrical equipment is powered by the power supply control circuit, and in the working process of the intelligent electrical equipment, if some mechanisms have safety accidents, the power supply control circuit disconnects the power supply paths of all the mechanisms, so that some mechanisms which cannot cause the safety accidents also stop working.
As shown in fig. 1, the conventional power supply control circuit includes a power source V1, an emergency stop switch K1, a power-on switch S1, a first relay SR, and a second relay SK. The first relay SR and the second relay SK respectively include a coil and a contact set. The power supply V1, the emergency stop switch K1, the power-on switch S1 and the coil SR1 of the first relay SR are connected in series and form a loop. One end of a contact set SR2 of the first relay SR is connected with a mains supply zero line, the other end of the contact set SR2 of the first relay SR is connected with one end of a coil SK1 of the second relay SK, the other end of the coil SK1 of the second relay SK is connected with a mains supply live wire, and a contact set SK2 of the second relay SK is connected to a mains supply live wire and a zero wire which supply power for intelligent electrical equipment. The power-on switch S1 is kept on after power-on, when some mechanisms of the intelligent electrical equipment have safety accidents, the emergency stop switch K1 is disconnected, the coil SR1 of the first relay SR is disconnected from the power supply V1, the contact set SR2 of the first relay SR is disconnected from the coil SK1 of the second relay SK, the live wire and the zero line of the commercial power, so that the contact set SK2 of the second relay SK is disconnected from the commercial power circuit for supplying power to the intelligent electrical equipment, all the mechanisms of the intelligent electrical equipment are powered off, the mechanisms which cannot cause safety accidents in the intelligent electrical equipment are also powered off, and some machining processes are stopped.
Referring to fig. 2, an embodiment of the present application provides a power supply control circuit, which includes a first power source 10, a first switch 20, and a second switch 30. The first power source 10 is connected to the first switch 20, the second switch 30 is connected to the first power source 10 and the first switch 20, and the second switch 30 is further used for connecting to the first actuator 40. The first power source 10 is used for supplying power to the second switch 30 and the first actuator 40. When the first switch 20 is in the off state, the second switch 30 is disconnected from the first power supply 10. The second switch 30 is used to disconnect the first actuator 40 from the first power source 10 when the first power source 10 stops supplying power, so that the first actuator 40 stops working.
The user can press, touch or screw the first switch 20 to make the first switch 20 in an off state, so that the first switch 20 disconnects the second switch 30 from the first power source 10.
The first actuator 40 is a mechanism that may cause personal injury to a user in the case of power-on operation, such as a robot, a motor, a cylinder, a robot arm, and the like. The mechanism that does not cause personal injury to the user in the intelligent electrical equipment is a safety mechanism 50, for example, a heating mechanism, a cooking mechanism, a heat preservation mechanism, a refrigeration mechanism, and the like. The safety mechanism 50 is connected to the first power source 10, and the first power source 10 is also used to supply power to the safety mechanism 50.
The first actuator 40 includes a first actuator 41 and a first controller 42. The first controller 42 is connected to the second switch 30, the first actuator 41 is connected to the first controller 42, and the first power supply 10 supplies power to the first controller 42 through the second switch 30. When the power supply circuit between the first controller 42 and the first power supply 10 is turned on, the first controller 42 is powered by the first power supply 10 to operate, and the first controller 42 controls the first execution part 41, so that the first execution part 41 operates to execute the corresponding function. When the power supply circuit between the first controller 42 and the first power supply 10 is disconnected, the first power supply 10 stops supplying power to the first controller 42, the first controller 42 stops controlling the first actuator 41, and thus the first actuator 41 stops operating, and the first actuator 41, i.e., the first actuator 40 stops operating.
The safety mechanism 50 includes a safety member 51 and an emergency stop controller 52. The non-emergency stop controller 52 is connected to the first power supply 10. The non-emergency-stop controller 52 is configured to control the safety member 51 in a power-on state, i.e., a state in which the first power source 10 supplies power, so that the safety member 51 operates to perform a corresponding function. The non-emergency stop controller 52 is not affected by the turning off of the first switch 20, and when the first actuator 40 is powered off, the safety mechanism 50 remains energized, so that the safety mechanism 50 can remain in operation while the first actuator 40 stops operating.
The power supply control circuit of the embodiment of the application, by arranging the second switch 30 between the first switch 20 and the first power supply 10 and between the first power supply 10 and the first actuating mechanism 40, and further disconnecting the second switch 30 from the first power supply 10 when the first switch 20 is in a disconnected state, the first power supply 10 stops supplying power to the second switch 30, the second switch 30 disconnects the first actuating mechanism 40 from the first power supply 10, so that the first power supply 10 stops supplying power to the first actuating mechanism 40, the first actuating mechanism 40 stops working, and the safety mechanism 50 is connected with the first power supply 10, and is not affected by the disconnection of the first switch 20, so that a safety accident of the first actuating mechanism 40 can be prevented, and meanwhile, the normal operation of the safety mechanism 50 is ensured.
In one embodiment, the first switch 20 is any one of an emergency stop switch, a safety light, and a safety door. The number of the first switches 20 is at least two, and a plurality of the first switches 20 are connected in series. Preferably, the number of the first switches 20 is two, the two first switches 20 are connected in series and can be respectively disposed at different positions of the intelligent electrical equipment, and the number of the first switches 20 is two, so that the user can effectively operate the first switches 20, and the operation of the first actuator 40 can be effectively and emergently stopped when a safety accident occurs.
In one embodiment, the second switch 30 is a relay. The relay comprises a coil and a contact group, one end of the coil is connected with the first switch, the other end of the coil is connected with the first power supply 10, one end of the contact group is connected with the first power supply 10, and the other end of the contact group is used for being connected with the first actuating mechanism 40. The quantity of relay is two, and the coil series connection of two relays connects, and the contact group series connection of two relays. When one relay in the power supply control circuit breaks down and the first switch 20 is in a disconnected state, and the relay cannot disconnect the circuit, the other relay can ensure that the power supply circuit is disconnected in time, so that the first executing mechanism 40 can stop working emergently, safety accidents are avoided, and the cost of the power supply control circuit can be favorably controlled due to the fact that the number of the relays is two. The relay can adopt a G7SA-3A1B DC24 relay of ohm dragon.
In one embodiment, the voltage of the first power supply 10 is 24V.
Referring to fig. 3, in one embodiment, the power control circuit further includes a second power supply 60. The second power supply 60 and the first switch 20 are configured to form a loop with the second actuator 70, the second power supply 60 is configured to supply power to the second actuator 70, and when the first switch 20 is in an off state, the second power supply 60 is disconnected from the second actuator 70, so that the second actuator 70 stops operating.
The second actuator 70 includes a second actuator 71 and a second controller 72. The second power supply 60, the first switch 20 and the second controller 72 form a loop, and the second power supply 60 is used for supplying power to the second controller 72. The second actuator 71 is also a mechanism that may cause user injury in the case of power-on operation. The second executing section 71 is controlled by the second controller 72 to execute the corresponding function. When the power supply circuit between the second power supply 60 and the second controller 72 is turned on, the second controller 72 is powered by the second power supply 60 to operate, and the second controller 72 controls the second execution part 71, so that the second execution part 71 operates to execute the corresponding function. When the power supply circuit between the second controller 72 and the second power supply 60 is disconnected, the second power supply 60 stops supplying power to the second controller 72, the second controller 72 stops controlling the second actuator 71, the second actuator 71 stops operating, and the second actuator 71 stops operating, that is, the second actuator 70 stops operating.
The voltage of the second power supply 60 is not equal to the voltage of the first power supply 10. The voltage of the second power supply 60 may be 5V, 12V, 48V, etc.
In this embodiment, when the second controller 72 controlling the operation of the second actuator 71 is not powered by the first power supply 10, but powered by the second power supply 60, the first switch 20 and the second controller 72 are connected and looped, so that when the second actuator 71 needs an emergency stop operation, the first switch 20 can effectively disconnect the power supply path between the second controller 72 and the second power supply 60, and thus the second controller 72 stops controlling the second actuator 71, thereby ensuring that the second actuator 71 stops operating without affecting the normal operation of the safety mechanism 50.
Referring to fig. 4, in one embodiment, the power supply control circuit further includes a main controller 80, the main controller 80 is connected to the first switch 20, the main controller 80 is further configured to be connected to the first actuator 40, and the main controller 80 is configured to control the first actuator 40 to stop operating when the first switch 20 is detected to be in the off state. The opening of the first switch 20 may trigger the main controller 80 to transmit a control signal to the first controller 42, and the first controller 42 stops operating after receiving the control signal, so that the first execution part 41 stops operating. The main Controller 80 is a central Controller of the intelligent electrical equipment, and the main Controller 80 may be a PLC (Programmable Logic Controller) or an MCU (micro Controller Unit). The main controller 80 adds a double guarantee to the emergency stop operation of the first actuator 40. The control signal may be a level signal.
The operation principle of the power supply control circuit will be explained below.
Referring to fig. 5, the first switch 20 is an emergency stop switch SB, and the second switch 30 is a relay SA, which includes a coil and a contact set. The negative electrode Vin-of the first power supply 10 is 0V, i.e., ground, and the positive electrode Vin + of the first power supply 10 is 24V. The emergency stop switch SB includes a first contact and a second contact, one end of the first contact is grounded, the other end of the first contact is connected to one end of the coil SA1 of the relay SA, one end of the second contact is grounded, and the other end of the second contact is connected to the main controller 80. The positive electrode Vin + of the first power supply 10 is connected to the other end of the coil SA1 of the relay SA, one end of the contact group SA2 of the relay SA, and one end of the non-emergency stop controller 52, one end of the first controller 42 is connected to the other end of the contact group SA2 of the relay SA, the other end of the non-emergency stop controller 52 is connected to the safety unit 51, and the other end of the first controller 42 is connected to the first actuator 41. The main controller 80 is also connected to the first controller 42.
When a safety accident occurs to the first actuator 40, the user presses the emergency stop switch SB, the emergency stop switch SB enters an off state, the connection between the coil SA1 of the relay SA and the ground is disconnected, so that the first power supply 10 supplies power to the coil SA1 of the relay SA, the contact set SA2 of the relay SA disconnects the connection between the first controller 42 and the positive electrode of the first power supply 10 due to the power failure of the coil SA1 of the relay SA, the first controller 42 is powered off, the first controller 42 stops controlling the first actuator 41, and the first actuator 40 stops operating. Since the path between the positive electrode of the first power source 10 and the emergency stop controller 52 is not disconnected due to the emergency stop of the first actuator 40, the safety mechanism 50 is not affected by the emergency stop and keeps working normally, thereby ensuring the safety of the first actuator 40 and enabling the safety mechanism 50 to work normally.
When a safety accident occurs to the first actuator 40, the user presses the emergency stop switch SB, the main controller 80 detects that the emergency stop switch SB is turned off, and controls the first controller 42 to stop working, so that the first actuator 41 stops working, and when the emergency stop switch SB is turned off, the main controller 80 controls the first actuator 40 to stop working in a signal control manner, so that the guarantee of emergency stop of the first actuator 40 is added.
When the emergency stop switch SB is in the open state, both the first contact and the second contact are open, and when the emergency stop switch SB is in the closed state, both the first contact and the second contact are closed.
Referring to fig. 6, in one embodiment, the power supply control circuit further includes a conversion unit 103, the conversion unit 103 is used for connecting with the commercial power 105 and the first power supply 10, and the conversion unit 103 is used for performing voltage reduction and rectification processing on the ac commercial power to obtain a dc power and transmitting the dc power to the first power supply 10. The conversion unit 103 may include a transformer and a rectifying circuit. The conversion unit 103 converts the commercial power 105 into low-voltage direct current, so as to ensure the power supply of the low-voltage mechanism of the intelligent electrical equipment, such as the first controller 42 and the main controller 80.
It is understood that the converting unit 103 may also be connected to the second power supply 60 for transmitting the direct current converted from the commercial power to the second power supply 60. The commercial power can be 220V alternating current or 380V alternating current.
In one embodiment, the power supply control circuit further includes a contactor 104, the contactor 104 is connected to the first power source 10, the contactor 104 is further used for being connected to the first actuator 40 and the commercial power, respectively, and the contactor 104 is turned on by the power supplied from the first power source 10, so that the commercial power supplies power to the first actuator 40. The commercial power supply circuit of the intelligent electrical equipment is established or disconnected through the contactor 104, so that the on-off control of the intelligent electrical equipment can be realized through the control of the contactor 104. The contactor 104 may also be used to connect with the second actuator 70 and the safety gear 50, the contactor 104 enabling mains electricity to power the second actuator 70 and the safety gear 50 when switched on.
The embodiment of the application also provides a cooking device, a first actuating mechanism 40 of the cooking device and the power supply control circuit of any one of the above embodiments.
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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A power supply control circuit is characterized by comprising a first power supply, a first switch and a second switch, wherein the first power supply is connected with the first switch, the second switch is respectively connected with the first power supply and the first switch, and the second switch is also used for being connected with a first execution mechanism;
the first power supply is used for supplying power to the second switch and the first actuating mechanism;
when the first switch is in an off state, the second switch is disconnected from the first power supply;
the second switch is used for disconnecting the first actuating mechanism from the first power supply when the first power supply stops supplying power, so that the first actuating mechanism stops working.
2. The power supply control circuit according to claim 1, further comprising a main controller, wherein the main controller is connected to the first switch, the main controller is further configured to be connected to the first actuator, and the main controller is configured to control the first actuator to stop operating when the first switch is detected to be in an off state.
3. The power supply control circuit of claim 1 further comprising a second power source and said first switch for forming a circuit with a second actuator, said second power source for powering said second actuator, said first switch, when in an off state, disconnecting said second power source from said second actuator to cause said second actuator to cease operation.
4. The power supply control circuit according to claim 1, wherein the first switches are emergency stop switches, and/or the number of the first switches is at least two, and a plurality of the first switches are connected in series.
5. The power supply control circuit according to claim 1, wherein the second switch is a relay, the relay includes a coil and a contact set, one end of the coil is connected to the first switch, the other end of the coil is connected to the first power source, one end of the contact set is connected to the first power source, and the other end of the contact set is used for being connected to the first actuator.
6. The power supply control circuit according to claim 5, wherein the number of the relays is two, coils of two relays are connected in series, and contact sets of two relays are connected in series.
7. The power supply control circuit according to claim 1, wherein the voltage of the first power supply is 24V.
8. The power supply control circuit according to claim 1, further comprising a conversion unit, wherein the conversion unit is configured to be connected to a commercial power and the first power supply, and the conversion unit is configured to step down and rectify an ac commercial power to obtain a dc power and transmit the dc power to the first power supply.
9. The power supply control circuit according to claim 1, further comprising a contactor, wherein the contactor is connected to the first power supply, the contactor is further used for being connected to the first actuator and a mains supply, respectively, and the contactor is turned on when the first power supply supplies power, so that the mains supply supplies power to the first actuator.
10. A cooking apparatus comprising a first actuator and a power supply control circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021880792.3U CN212849869U (en) | 2020-09-01 | 2020-09-01 | Power supply control circuit and cooking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021880792.3U CN212849869U (en) | 2020-09-01 | 2020-09-01 | Power supply control circuit and cooking equipment |
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| Publication Number | Publication Date |
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| CN212849869U true CN212849869U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021880792.3U Active CN212849869U (en) | 2020-09-01 | 2020-09-01 | Power supply control circuit and cooking equipment |
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| CN (1) | CN212849869U (en) |
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