CN216702364U - Commercial soybean milk machine - Google Patents
Commercial soybean milk machine Download PDFInfo
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- CN216702364U CN216702364U CN202120647102.8U CN202120647102U CN216702364U CN 216702364 U CN216702364 U CN 216702364U CN 202120647102 U CN202120647102 U CN 202120647102U CN 216702364 U CN216702364 U CN 216702364U
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Abstract
The utility model discloses a commercial soybean milk machine, belonging to the field of electric appliances and solving the problem that circuits for driving a pulping motor to rotate forward and backward are simultaneously conducted when the pulping motor is switched between forward rotation and backward rotation. The utility model is mainly used for protecting the components of the motor switch circuit from being damaged.
Description
Technical Field
The utility model relates to a domestic electric appliance, in particular to a commercial soybean milk machine.
Background
The existing commercial soybean milk machine comprises an electric control assembly, a water supply assembly and a soybean milk making barrel, wherein the water supply assembly is controlled by the electric control assembly to supply water to the soybean milk making barrel, the soybean milk making barrel is provided with a grinder and a soybean milk making motor for driving the grinder to work, and the electric control assembly comprises a control chip and a motor switch circuit for controlling the soybean milk making motor to work. The pulping motor has the advantages that the rated capacity of the pulping barrel is large, the output power of the pulping motor is high, so that the instantaneous current of the pulping motor is large when the pulping motor is started, large impact is generated on components forming a motor switching circuit, particularly when the pulping motor needs to be switched in forward rotation and reverse rotation, the situation that a circuit for driving the pulping motor to rotate forward and a circuit for driving the pulping motor to rotate reversely are conducted at the same time is easy to occur, the pulping motor can be locked, the heating value is high, and the pulping motor can be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a commercial soybean milk machine which protects a soybean milk making motor from being damaged easily.
In order to achieve the purpose, the utility model adopts the following technical scheme: a commercial soybean milk maker comprises an electric control assembly, a water supply assembly and a soybean milk making barrel, wherein the water supply assembly is controlled by the electric control assembly to supply water to the soybean milk making barrel, the soybean milk making barrel is provided with a pulverizer and a soybean milk making motor for driving the pulverizer to work, the electric control assembly comprises a control chip and a motor switch circuit, the soybean milk making motor is an alternating current induction motor, the motor switch circuit comprises a forward rotation switch circuit and a reverse rotation switch circuit, the forward rotation switch circuit comprises a first alternating current contactor for controlling the soybean milk making motor and a power supply to be switched on and off, the first alternating current contactor is provided with a normally closed auxiliary contact electrically connected with the reverse rotation switch circuit, the reverse rotation switch circuit comprises a second alternating current contactor for controlling the soybean milk making motor and the power supply to be switched on and switched off, the second alternating current contactor is electrically connected with the normally closed auxiliary contact electrically connected with the forward rotation switch circuit, the forward rotation switch circuit is switched on to enable the first alternating current contactor to act, the soybean milk making motor is switched off, the reverse rotation switch circuit is switched off or the reverse rotation switch circuit is switched on to enable the second alternating current contactor to act, The pulping motor reverse rotation and forward rotation switch circuit is disconnected.
Furthermore, the forward rotation switch circuit further comprises a first electronic switch for controlling the forward rotation switch circuit to be switched on and off, and the first electronic switch is electrically connected with the control chip.
Furthermore, the first electronic switch is a first relay, a coil of the first relay is electrically connected with the control chip, and a normally open contact of the first relay is electrically connected with a normally closed auxiliary contact of the second alternating current contactor and a coil of the first alternating current contactor in the forward rotation switch circuit; or, the first electronic switch is a first controllable silicon, a G pole of the first controllable silicon is electrically connected with the control chip, and a T1 pole and a T2 pole of the first controllable silicon are electrically connected with the normally closed auxiliary contact of the second alternating current contactor and the coil of the first alternating current contactor in the forward rotation switching circuit.
Furthermore, the reversing switch circuit further comprises a second electronic switch for controlling the reversing switch circuit to be switched on and off, and the second electronic switch is electrically connected with the control chip.
Furthermore, the second electronic switch is a second relay, a coil of the second relay is electrically connected with the control chip, and a normally open contact of the second relay, a normally closed auxiliary contact of the first alternating current contactor and a coil of the second alternating current contactor are electrically connected with the reverse switch circuit; or the second electronic switch is a second controlled silicon, the G pole of the second controlled silicon is electrically connected with the control chip, and the T1 pole and the T2 pole of the second controlled silicon are electrically connected with the normally closed auxiliary contact of the first alternating current contactor and the coil of the second alternating current contactor in the forward rotation switching circuit.
Furthermore, the water supply assembly comprises a water tank and a first heater, the electric control assembly further comprises a first overheating protection circuit for preventing the first heater from overheating, the first overheating protection circuit comprises a first switch circuit and a first temperature sensor, the first switch circuit and the first temperature sensor are respectively electrically connected with the control chip, the first switch circuit is used for controlling the first heater to be connected with a power supply in a connected mode, the first temperature sensor is used for monitoring the temperature of the first heater, the control chip presets a first temperature signal threshold value, and the first switch circuit is disconnected after the temperature signal of the first temperature sensor exceeds the first temperature signal threshold value so that the first heater is powered off.
Furthermore, the first switch circuit comprises a third alternating current contactor, a third electronic switch and a first overheat protector, a normally-open main contact of the third alternating current contactor is electrically connected with the first heater and the power supply, a coil of the third alternating current contactor, the third electronic switch and the first overheat protector are connected in series in the first switch circuit, the third electronic switch is controlled to be switched on and switched off by the control chip, and the first overheat protector is switched off after the temperature of the first heater reaches a preset action temperature.
Furthermore, commercial soybean milk machine still includes the boiling vessel, the boiling vessel is to boiling vessel row thick liquid, the boiling vessel is equipped with the second heater, automatically controlled subassembly still includes the second overheat protection circuit who prevents the second heater overheat, the second overheat protection circuit includes second switch circuit and the second temperature sensor who is connected with the control chip electricity respectively, second switch circuit is used for controlling second heater and power break-make, second temperature sensor is used for monitoring the temperature of second heater, the control chip predetermines the second temperature signal threshold and breaks off second switch circuit and makes the second heater outage after the temperature signal of second temperature sensor surpasss the second temperature signal threshold.
Furthermore, the boiling barrel is provided with a first anti-overflow electrode, the first anti-overflow electrode is electrically connected with the control chip through a first anti-overflow circuit, and the control chip disconnects the reversing switch circuit according to an electric signal of the first anti-overflow electrode to enable the second heater to be powered off.
Furthermore, the pulping barrel is provided with a second anti-overflow electrode, the second anti-overflow electrode is electrically connected with the control chip through a second anti-overflow circuit, and the control chip disconnects the motor switch circuit according to an electric signal of the second anti-overflow electrode to enable the pulping motor to be powered off.
After the technical scheme is adopted, the utility model has the following advantages: the alternating current connection through first ac contactor and second ac contactor realizes corotation, the auto-lock control of reversal, when first ac contactor inhales, first ac contactor's normally closed auxiliary contact disconnection, lead to reversal switch circuit disconnection, second ac contactor just can't the actuation, while reason, when second ac contactor inhales, second ac contactor's normally closed auxiliary contact disconnection, lead to reversal switch circuit disconnection, first ac contactor just can't the actuation, can prevent effectively that first ac contactor and second ac contactor from inhaling simultaneously, ensure pulping motor control's reliability, stability and security, it is not fragile to protect pulping motor.
Drawings
The utility model will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram (one) of a motor switching circuit according to a first embodiment of the present invention;
fig. 2 is a schematic diagram (two) of a motor switching circuit according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of an overheat protection and overflow prevention circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a motor switching circuit according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a commercial soymilk machine according to the present invention.
Detailed Description
The first embodiment is as follows:
the utility model provides a commercial soybean milk machine, which comprises an electric control assembly, a water supply assembly and a soybean milk making barrel 7, wherein the specific structure diagram is shown in figure 5, the water supply assembly is controlled by the electric control assembly to supply water to the soybean milk making barrel 7, the soybean milk making barrel 7 is provided with a grinder and a soybean milk making motor M1 for driving the grinder to work, the grinder can be a grinding cutter or a grinding head assembly, the electric control assembly comprises a control chip U1 and a motor switch circuit, the soybean milk making motor M1 is an alternating current induction motor which is a single-phase asynchronous motor in the embodiment, as shown in figure 1, the motor switch circuit comprises a forward rotation switch circuit and a reverse rotation switch circuit, the forward rotation switch circuit comprises a first alternating current contactor JK1 for controlling the on-off of the soybean milk making motor M1 and a power supply, the first alternating current contactor JK1 is provided with a normally closed auxiliary contact electrically connected with the reverse rotation switch circuit, the reverse rotation switch circuit comprises a second alternating current contactor JK2 for controlling the on-off of the soybean milk making motor M1 and the power supply, the second AC contactor JK2 has a normally closed auxiliary contact electrically connected to the forward rotation switch circuit, the forward rotation switch circuit is conducted to make the first AC contactor JK1 operate, the pulping motor M1 rotates forward, the reverse rotation switch circuit is disconnected, or the reverse rotation switch circuit is conducted to make the second AC contactor JK2 operate, the pulping motor M1 rotates backward, the forward rotation switch circuit is disconnected.
According to the self-locking control device, the self-locking control of forward rotation and reverse rotation is realized through the cross electric connection of the first alternating current contactor and the second alternating current contactor, when the first alternating current contactor is attracted, the normally closed auxiliary contact of the first alternating current contactor is disconnected, so that the reverse rotation switch circuit is disconnected, the second alternating current contactor cannot be attracted, and meanwhile, when the second alternating current contactor is attracted, the normally closed auxiliary contact of the second alternating current contactor is disconnected, so that the reverse rotation switch circuit is disconnected, the first alternating current contactor cannot be attracted, the simultaneous attraction of the first alternating current contactor and the second alternating current contactor can be effectively prevented, the control reliability, stability and safety of the pulping motor are ensured, and the pulping motor is protected from being damaged difficultly.
The forward rotation switch circuit further comprises a first electronic switch for controlling the forward rotation switch circuit to be switched on and switched off, and the first electronic switch is electrically connected with the control chip U1. Specifically, in the present embodiment, the first electronic switch is a first relay K1, a coil of the first relay K1 is electrically connected to the control chip U1, and a normally open contact of the first relay K1 is electrically connected to a normally closed auxiliary contact of the second ac contactor JK2 and a coil of the first ac contactor JK1 in the forward rotation switch circuit. It is understood that the electronic switch may also be a thyristor, and specifically, the first electronic switch is a first thyristor TR1, for example, as shown in fig. 2, the G pole of the first thyristor TR1 is electrically connected to the control chip U1, the T1 pole and the T2 pole of the first thyristor TR1 are electrically connected to the normally closed auxiliary contact of the second ac contactor JK2, and the coil of the first ac contactor JK1 is electrically connected to the forward rotation switch circuit.
The reversing switch circuit further comprises a second electronic switch for controlling the reversing switch circuit to be switched on and off, and the second electronic switch is electrically connected with the control chip U1. Specifically, in the present embodiment, the second electronic switch is a second relay K2, a coil of the second relay K2 is electrically connected to the control chip U1, and a normally open contact of the second relay K2, a normally closed auxiliary contact of the first ac contactor JK1, and a coil of the second ac contactor JK2 are electrically connected to the reverse switch circuit. Similarly, the second electronic switch may be a second thyristor TR2, for example, as shown in fig. 3, the G pole of the second thyristor TR2 is electrically connected to the control chip U1, and the T1 pole and the T2 pole of the second thyristor TR2 are electrically connected to the normally closed auxiliary contact of the first ac contactor JK1 and the coil of the second ac contactor JK2 in the forward rotation switch circuit.
Besides the relay and the thyristor, the first electronic switch and the second electronic switch can also adopt common electronic switches such as a triode, a field effect transistor and the like.
In order to convey hot water to the pulping barrel 7, the water supply assembly may include a water tank 9 and a first heater 100, the first heater 100 may be disposed on the water tank 9 or on a water inlet pipeline, and in order to avoid overheating and burning of the first heater 100, the electric control assembly may further include a first overheating protection circuit for preventing overheating of the first heater 100, the first overheating protection circuit includes a first switch circuit and a first temperature sensor 101, which are respectively electrically connected to the control chip U1, the first switch circuit is configured to control the first heater 100 to be switched on and off with a power supply, the first temperature sensor 101 is configured to monitor the temperature of the first heater 100, and the control chip U1 presets a first temperature signal threshold and switches off the first switch circuit to power off the first heater 100 after the temperature signal of the first temperature sensor 101 exceeds the first temperature signal threshold.
Specifically, the first switch circuit comprises a third alternating current contactor JK3, a third electronic switch and a first overheat protector 102, a normally-open main contact of the third alternating current contactor JK3 is electrically connected with the first heater 100 and a power supply, a coil of the third alternating current contactor JK3, the third electronic switch and the first overheat protector 102 are connected in series in the first switch circuit, the third electronic switch is controlled to be switched on and off by a control chip U1, and the first overheat protector 102 is switched off after the temperature of the first heater 100 reaches a preset action temperature. The third electronic switch may adopt common components such as a relay, a thyristor, a triode, a field effect transistor, and the like, and in this embodiment, a relay is selected, specifically, the third relay K3.
In some models, the pulping barrel 7 can realize functions of pulping, cooking and the like, in other models, the soymilk making function and the soymilk boiling function are separated, and therefore, as seen in fig. 5, the commercial soymilk maker further comprises a soymilk boiling barrel 8, the soymilk making barrel 7 discharges soymilk to the soymilk boiling barrel 8, the water supply assembly can also supply water to the soymilk boiling barrel 8, the soymilk boiling barrel 8 is provided with a second heater 300, the electric control assembly further comprises a second overheating protection circuit for preventing the second heater 300 from overheating, the second overheating protection circuit comprises a second switch circuit and a second temperature sensor 301 which are respectively and electrically connected with the control chip U1, the second switch circuit is used for controlling the second heater 300 to be switched on or off with the power supply, the second temperature sensor 301 is used for monitoring the temperature of the second heater 300, the control chip U1 presets a second temperature signal threshold value, and the second switch circuit is switched off to power off the second heater 300 after the temperature signal of the second temperature sensor 301 exceeds the second temperature signal threshold value.
Specifically, the second switch circuit comprises a fourth alternating current contactor JK4, a fourth electronic switch and a second overheat protector 302, a normally-open main contact of the fourth alternating current contactor JK4 is electrically connected with the second heater 300 and a power supply, a coil of the fourth alternating current contactor JK4, the fourth electronic switch and the second overheat protector 302 are connected in series in the second switch circuit, the fourth electronic switch is controlled to be switched on and off by a control chip U1, and the second overheat protector 302 is switched off after the temperature of the second heater 300 reaches a preset action temperature. Similar to the third electronic switch, the fourth electronic switch in the present embodiment selects a relay, specifically, the fourth relay K4.
Since more foam is generated during cooking, in order to prevent the cooking barrel 8 from overflowing, the cooking barrel 8 is provided with a first overflow-preventing electrode T1, the first overflow-preventing electrode T1 is electrically connected with the control chip U1 through a first overflow-preventing circuit, and the control chip U1 turns off the reverse switch circuit according to an electric signal of the first overflow-preventing electrode T1, so that the second heater 300 is powered off. The first anti-overflow circuit is realized by two comparators.
In addition, if the pulping barrel 7 has a risk of pulp overflow, the pulping barrel 7 may also be provided with a second anti-overflow electrode T2, the second anti-overflow electrode is electrically connected with the control chip U1 through a second anti-overflow circuit, and the control chip U1 disconnects the motor switching circuit according to an electrical signal of the second anti-overflow electrode to power off the pulping motor M1. Similarly, the second anti-overflow circuit is also implemented by using two comparators. And the water tank 9 can also be designed with a third overflow prevention electrode T3.
In some models, in order to realize low-power heating, a third heater 304 is further arranged on the pulp boiling barrel 8, the electric control assembly further comprises a third overheating protection circuit for preventing the third heater 304 from overheating, the third overheating protection circuit comprises a third switching circuit and a third temperature sensor 305, the third switching circuit is respectively and electrically connected with the control chip U1 and is used for controlling the third heater 304 to be switched on and off, the third temperature sensor 305 is used for monitoring the temperature of the third heater 304, and the control chip U1 presets a third temperature signal threshold value and switches off the third switching circuit to power off the third heater 304 after the temperature signal of the third temperature sensor 305 exceeds the third temperature signal threshold value.
Specifically, the third switch circuit comprises a fifth alternating current contactor JK5, a fifth electronic switch and a third overheat protector 306, a normally-open main contact of the fifth alternating current contactor JK5 is electrically connected with the third heater 304 and a power supply, a coil of the fifth alternating current contactor JK5, the fifth electronic switch and the third overheat protector 306 are connected in series in the third switch circuit, the fifth electronic switch is controlled to be switched on and off by a control chip U1, and the third overheat protector 306 is switched off after the temperature of the third heater 304 reaches a preset action temperature. Like the third electronic switch, the fifth electronic switch in the present embodiment selects a relay, specifically, the fifth relay K5.
Example two:
besides the single-phase asynchronous motor, the pulping motor M1 may also adopt a three-phase asynchronous motor, and the specific electrical connection mode refers to fig. 4, which is not described herein again.
Other contents not described in this embodiment may refer to embodiment one.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (10)
1. A commercial soybean milk maker comprises an electric control assembly, a water supply assembly and a milk making barrel, wherein the water supply assembly is controlled by the electric control assembly to supply water to the milk making barrel, the milk making barrel is provided with a grinder and a milk making motor for driving the grinder to work, the electric control assembly comprises a control chip and a motor switch circuit, and is characterized in that the milk making motor is an alternating current induction motor, the motor switch circuit comprises a forward rotation switch circuit and a reverse rotation switch circuit, the forward rotation switch circuit comprises a first alternating current contactor for controlling the milk making motor and a power supply to be switched on and off, the first alternating current contactor is provided with a normally closed auxiliary contact electrically connected with the reverse rotation switch circuit, the reverse rotation switch circuit comprises a second alternating current contactor for controlling the milk making motor and the power supply to be switched on and switched off, the second alternating current contactor is provided with a normally closed auxiliary contact electrically connected with the forward rotation switch circuit, and the forward rotation switch circuit is conducted to enable the first alternating current contactor to act, and the milk making motor to rotate forward, The reverse rotation switch circuit is disconnected or the reverse rotation switch circuit is connected to enable the second alternating current contactor to act, the pulping motor to reversely rotate and the forward rotation switch circuit to be disconnected.
2. The commercial soymilk machine according to claim 1, wherein the forward rotation switch circuit further comprises a first electronic switch for controlling the on-off of the forward rotation switch circuit, and the first electronic switch is electrically connected with the control chip.
3. The commercial soymilk machine according to claim 2, wherein the first electronic switch is a first relay, a coil of the first relay is electrically connected with the control chip, a normally open contact of the first relay is electrically connected with a normally closed auxiliary contact of the second AC contactor, and a coil of the first AC contactor is electrically connected in a forward rotation switch circuit; or, the first electronic switch is a first controllable silicon, a G pole of the first controllable silicon is electrically connected with the control chip, and a T1 pole and a T2 pole of the first controllable silicon are electrically connected with the normally closed auxiliary contact of the second alternating current contactor and the coil of the first alternating current contactor in the forward rotation switching circuit.
4. The commercial soymilk machine according to claim 1, wherein the reversal switch circuit further comprises a second electronic switch for controlling the on-off of the reversal switch circuit, and the second electronic switch is electrically connected with the control chip.
5. The commercial soymilk machine according to claim 4, wherein the second electronic switch is a second relay, a coil of the second relay is electrically connected with the control chip, and a normally open contact of the second relay, a normally closed auxiliary contact of the first AC contactor and a coil of the second AC contactor are electrically connected with the reverse switch circuit; or the second electronic switch is a second controllable silicon, the G pole of the second controllable silicon is electrically connected with the control chip, and the T1 pole and the T2 pole of the second controllable silicon are electrically connected with the normally closed auxiliary contact of the first alternating current contactor and the coil of the second alternating current contactor in the forward rotation switching circuit.
6. The commercial soybean milk maker according to claim 1, wherein the water supply assembly comprises a water tank and a first heater, the electric control assembly further comprises a first overheating protection circuit for preventing the first heater from overheating, the first overheating protection circuit comprises a first switch circuit and a first temperature sensor, the first switch circuit and the first temperature sensor are respectively electrically connected with the control chip, the first switch circuit is used for controlling the first heater and a power supply to be switched on and off, the first temperature sensor is used for monitoring the temperature of the first heater, and the control chip presets a first temperature signal threshold value and switches off the first switch circuit to power off the first heater after the temperature signal of the first temperature sensor exceeds the first temperature signal threshold value.
7. The commercial soymilk machine according to claim 6, wherein the first switch circuit comprises a third AC contactor, a third electronic switch and a first overheat protector, a normally open main contact of the third AC contactor is electrically connected with the first heater and the power supply, a coil of the third AC contactor, the third electronic switch and the first overheat protector are connected in series in the first switch circuit, the third electronic switch is controlled by a control chip to be switched on and off, and the first overheat protector is switched off after the temperature of the first heater reaches a preset action temperature.
8. The commercial soymilk machine according to claim 1, wherein the commercial soymilk machine further comprises a soymilk boiling barrel, the soymilk boiling barrel discharges soymilk to the soymilk boiling barrel, the soymilk boiling barrel is provided with a second heater, the electric control assembly further comprises a second overheating protection circuit for preventing the second heater from overheating, the second overheating protection circuit comprises a second switch circuit and a second temperature sensor which are respectively electrically connected with the control chip, the second switch circuit is used for controlling the second heater to be switched on and off with a power supply, the second temperature sensor is used for monitoring the temperature of the second heater, and the control chip presets a second temperature signal threshold and switches off the second switch circuit to power off the second heater after the temperature signal of the second temperature sensor exceeds the second temperature signal threshold.
9. The commercial soymilk machine according to claim 8, wherein the soymilk boiling barrel is provided with a first anti-overflow electrode which is electrically connected with the control chip through a first anti-overflow circuit, and the control chip cuts off the reverse switch circuit according to the electric signal of the first anti-overflow electrode to cut off the power of the second heater.
10. The commercial soymilk machine according to claim 1, wherein the soymilk barrel is provided with a second anti-overflow electrode which is electrically connected with the control chip through a second anti-overflow circuit, and the control chip cuts off the motor switch circuit according to the electrical signal of the second anti-overflow electrode to cut off the power of the soymilk motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647102.8U CN216702364U (en) | 2021-03-30 | 2021-03-30 | Commercial soybean milk machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647102.8U CN216702364U (en) | 2021-03-30 | 2021-03-30 | Commercial soybean milk machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216702364U true CN216702364U (en) | 2022-06-10 |
Family
ID=81871150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120647102.8U Active CN216702364U (en) | 2021-03-30 | 2021-03-30 | Commercial soybean milk machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216702364U (en) |
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2021
- 2021-03-30 CN CN202120647102.8U patent/CN216702364U/en active Active
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