CN210930992U - Food processor and power supply device thereof - Google Patents

Abstract

The application discloses cooking machine and power supply unit thereof. The power supply device comprises a commercial power receiving module, a power supply module, a display module, a switch assembly and a driving piece, wherein the commercial power receiving module, the power supply module, the switch assembly and the driving piece are arranged on a first branch, the commercial power receiving module, the power supply module and the display module are arranged on a second branch, and the switch assembly is arranged on a seat body of the food processor to switch between an off state and an on state according to whether the food processing cup is placed on the seat body; the cooking cup is determined to be separated from the seat body, the switch component is disconnected to disconnect the first branch, so that the driving part is stopped supplying power, and the commercial power received by the commercial power receiving module continues to be supplied to the display module through the power module and the second branch, so that the display module keeps working normally. Through this kind of mode, after cooking cup breaks away from the pedestal, display module can keep normal work, avoids display module frequently to restart, can prolong cooking machine's life and improve user experience.

Description

Food processor and power supply device thereof

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a food processor and a power supply device thereof.

Background

With the improvement of living standard, people pay more and more attention to health, so more and more users choose food processors such as cooking machines to make food by themselves.

The inventor of this application discovers at long-term research and development in-process, for avoiding causing the injury to the user, when cooking cup breaks away from the base, cooking opportunity auto-power-off to make cooking machine stop work, nevertheless behind the outage, cooking machine's display screen can't show, and when the power-on restarted, the display screen restart time was longer, and user experience is lower.

SUMMERY OF THE UTILITY MODEL

The main technical problem who solves of this application realizes how to break away from the pedestal back at cooking cup, and display module can normally work to avoid display module frequently to restart, prolong cooking machine's life and improve user experience.

In order to solve the technical problem, the application adopts a technical scheme that: a power supply device of a food processor is provided. The power supply device comprises a commercial power receiving module, a power supply module, a display module, a switch assembly and a driving piece, wherein the commercial power receiving module, the power supply module, the switch assembly and the driving piece are arranged on a first branch, and the commercial power receiving module, the power supply module and the display module are arranged on a second branch, wherein the switch assembly is arranged on a seat body of the food processor to switch between an off state and an on state according to whether the food processing cup is placed on the seat body; the cooking cup is placed on the seat body, the switch component is conducted to conduct the first branch, so that the commercial power received by the commercial power receiving module supplies power to the driving part through the power supply module, and the commercial power received by the commercial power receiving module supplies power to the display module through the second branch through the power supply module; the cooking cup is determined to be separated from the seat body, the switch component is disconnected to disconnect the first branch, so that the driving part is stopped supplying power, and the commercial power received by the commercial power receiving module continues to be supplied to the display module through the power module and the second branch, so that the display module keeps working normally.

In one embodiment, the power module includes: the first power supply unit is arranged on the first branch circuit and used for converting commercial power transmitted by the commercial power receiving module into first voltage so as to supply power to the driving part by using the first voltage; and the second power supply unit is arranged on the second branch circuit to convert the commercial power transmitted by the commercial power receiving module into a second voltage, so that the display module is powered by the second voltage.

In a specific embodiment, the switch assembly is arranged between the commercial power receiving module and the first power supply unit on the first branch; or the switch assembly is arranged between the first power supply unit on the first branch and the driving member.

In one embodiment, the switch assembly is disposed between the power module and the driver; and/or the driving part comprises a motor module and a heating module, wherein the motor module and the heating module are respectively connected with the power supply module.

In a specific embodiment, the power supply device further includes: the control module is arranged on the first branch and connected with the driving piece, the control module is used for controlling whether the driving piece is started or not, the control module is determined to control the driving piece to be started, and the power supply module supplies power to the driving piece so as to enable the driving piece to work normally; the switch assembly is arranged between the power supply module and the control module, so that whether the control module works or not is determined through the switch assembly, the control module is determined to be in a non-working state, and the control module stops starting of the driving piece, so that the driving piece is in the non-working state; or the switch assembly is arranged between the control module and the driving piece so as to determine whether to start the driving piece or not through the switch assembly, determine that the switch assembly is disconnected, and disconnect the control module and the driving piece so as to enable the driving piece to be in a non-working state.

In a specific embodiment, the power supply device further includes: the control module is arranged between the first power supply unit and the commercial power receiving module on the first branch, the control module is arranged between the first power supply unit and the driving piece, the control module is used for controlling whether the driving piece is started or not, the control module is used for determining that the driving piece is controlled to be started by the control module, and the first power supply unit supplies power to the driving piece so as to enable the driving piece to normally work; the control module stops starting the driving part to enable the driving part to be in a non-working state.

In one embodiment, the switch assembly comprises a first contact, a second contact and a connecting piece, the connecting piece is arranged corresponding to the bottom of the cooking cup, the cooking cup is determined to be placed on the base body, two ends of the connecting piece are respectively abutted against the first contact and the second contact, and the first contact is conducted with the second contact so that the switch assembly is in a conducting state; the cooking cup is determined to be separated from the base body, the connecting piece is separated from the first contact and the second contact, and the first contact is disconnected from the second contact, so that the switch assembly is in a disconnected state.

In one embodiment, the first power supply unit includes a first transformer and a first power supply chip, the first transformer is disposed between the commercial power receiving module and the driving member, the first power supply chip is disposed between the first transformer and the driving member, the first transformer transforms the commercial power transmitted from the commercial power receiving module, and the first power supply chip stabilizes the transformed voltage to convert the commercial power into the first voltage; the second power supply unit comprises a second transformer and a second power supply chip, the second transformer is arranged between the commercial power receiving module and the display module, the second power supply chip is arranged between the second transformer and the display module, the second transformer transforms commercial power transmitted by the commercial power receiving module, and the second power supply chip stabilizes voltage after transformation so as to convert the commercial power into second voltage.

In a specific embodiment, the power supply device further includes an EMC module disposed between the commercial power receiving module and the power supply module, for shielding electromagnetic interference of the commercial power to the power supply device.

In order to solve the above technical problem, another technical solution adopted by the present application is: a food processor is provided. This cooking machine includes pedestal, cooking cup and above-mentioned power supply unit, and power supply unit sets up in the pedestal, and cooking cup detachably assembles on the pedestal.

The beneficial effect of this application is: be different from prior art, this application cooking machine's driving piece and display module set up respectively on the power supply branch of difference, and when cooking cup breaks away from the pedestal, through the first branch road that the switch module disconnection corresponds with the driving piece, give the driving piece with the stop power supply, make the driving piece be in non-operating condition, can prevent the injury to the user, and at this moment, power module continues to give the display module power supply through the second branch road, make display module can normally work, therefore, this application can realize breaking away from the pedestal after cooking cup, display module keeps normally working, can avoid display module to frequently restart, can prolong cooking machine's life and improve user experience.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a power supply device of a food processor according to the present application;

fig. 2 is a schematic structural diagram of an embodiment of a power supply device of the food processor of the present application;

fig. 3 is a schematic structural diagram of an embodiment of a power supply device of the food processor of the present application;

fig. 4 is a schematic structural diagram of an embodiment of a power supply device of the food processor of the present application;

fig. 5 is a schematic structural diagram of an embodiment of a power supply device of the food processor of the present application;

fig. 6 is a schematic structural diagram of an embodiment of a power supply device of the food processor of the present application;

fig. 7 is a schematic structural diagram of a switch assembly in the power supply device of the food processor of fig. 6;

fig. 8 is a schematic circuit structure diagram of a first power supply unit in the power supply device of the food processor of fig. 6;

fig. 9 is a schematic circuit structure diagram of a second power supply unit in the power supply device of the food processor of fig. 6;

fig. 10 is a schematic structural diagram of an embodiment of the food processor of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.

First, a power supply device of a food processor is provided, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the power supply device of the food processor. The power supply device 10 of this embodiment includes a commercial power receiving module 110, a power module 120, a display module 130, a switch component 140 and a driving component 150, wherein the commercial power receiving module 110, the power module 120, the switch component 140 and the driving component 150 are disposed on a first branch, and the commercial power receiving module 110, the power module 120 and the display module 130 are disposed on a second branch, wherein the switch component 140 is disposed on a base (not shown) of the food processor (not shown) to switch between an off state and an on state according to whether a food cup (not shown) is placed on the base.

Wherein, it is determined that the food processing cup is placed on the seat body, the switch component 140 is turned on to turn on the first branch, so that the commercial power received by the commercial power receiving module 110 is supplied to the driving part 150 through the power module 120, and the commercial power received by the commercial power receiving module 110 is supplied to the display module 130 through the second branch through the power module 120; when it is determined that the food processing cup is separated from the base, the switch assembly 140 is turned off to turn off the first branch, so as to stop supplying power to the driving member 150, and the commercial power received by the commercial power receiving module 110 continues to pass through the power module 120 and supply power to the display module 130 through the second branch, so as to keep the display module 130 working normally.

The display module 130 is provided with a display screen (not shown), and the display screen can be used for displaying information such as heating temperature or power, heating or stirring time and the like of food in the cooking cup; the display screen can also receive information such as the working parameters of the food processor set by the touch of a user; the driving part 150 is used for driving a processing component to process food in the cooking cup, and the processing component can be a stirring rod, a blade or a heating body and the like; the commercial power receiving module 110 may be a receiving port for connecting with a city, etc.

The display screen may be a Thin Film Transistor (TFT) display screen or an Organic Light-Emitting Diode (OLED) display screen.

Be different from prior art, this embodiment cooking machine's driving piece and display module set up respectively on the power supply branch of difference, and when the cooking cup breaks away from the pedestal, through the first branch road that the switch module disconnection corresponds with the driving piece, give the driving piece with the stop power supply, make the driving piece stop work, can prevent the injury to the user, and at this moment, power module continues to give the display module power supply through the second branch road, make display module can normally work, therefore, this embodiment can realize after the cooking cup breaks away from the pedestal, display module keeps normally working, can avoid display module to frequently restart, can prolong cooking machine's life and improve user experience.

Optionally, the power module 120 of this embodiment includes a first power unit 121 and a second voltage unit 122, where the first power unit 121 is disposed on the first branch to convert the commercial power transmitted from the commercial power receiving module 110 into a first voltage, so as to supply power to the driving member 150 by using the first voltage; the second voltage unit 122 is disposed on the second branch to convert the commercial power transmitted from the commercial power receiving module 110 into a second voltage, so as to supply power to the display module 130 by using the second voltage.

The switch component 140 is disposed between the commercial power receiving module 110 and the first power supply unit 121 on the first branch.

Specifically, the input end of the utility power receiving module 110 is connected to the city, the first output end of the utility power receiving module 110 is connected to one end of the switch assembly 140, the other end of the switch assembly 140 is connected to the input end of the first power supply unit 121, and the output end of the first power supply unit 121 is connected to the driving member 150; a second output end of the commercial power receiving module 110 is connected to an input end of the second power unit 122, and an output end of the second power unit 122 is connected to the display module 130.

Determining that the food processing cup is separated from the base, the switch component 140 is turned off, the commercial power receiving module 110 stops supplying power to the first power supply unit 121, and the first power supply unit 121 stops supplying power to the driving part 150, so that the driving part 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

In another embodiment, as shown in fig. 2, the present embodiment is different from the embodiment of fig. 1 in that: the switch assembly 140 is disposed between the first power supply unit 121 and the driving member 150 on the first branch. Specifically, the first output end of the commercial power receiving module 110 is connected to the input of the first power supply unit 121, the output end of the first power supply unit 121 is connected to one end of the switch assembly 140, and the other end of the switch assembly 140 is connected to the driving member 150.

Determining that the cooking cup is separated from the seat body, the switch assembly 140 is turned off, and the first power supply unit 121 stops supplying power to the driving member 150, so that the driving member 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

In another embodiment, as shown in fig. 3, the present embodiment is different from the embodiment of fig. 2 in that: the power module 220 of the present embodiment is an integrated power unit, which respectively supplies power to the driving member 150 and the display module 130 through two output terminals; the switch assembly 140 is disposed between the power module 220 and the driving member 150. Specifically, the output end of the commercial power receiving module 110 is connected to the input end of the power module 220, the first output end of the power module 220 is connected to one end of the switch assembly 140, the other end of the switch assembly 140 is connected to the driving member 150, and the second output end of the power module 220 is connected to the display module 130.

Determining that the cooking cup is separated from the base, the switch assembly 140 is turned off, and the power module 220 stops supplying power to the driving member 150, so that the driving member 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

In another embodiment, as shown in fig. 4, the present embodiment is different from the embodiment of fig. 2 in that: the power supply device 10 of this embodiment further includes a control module 160, the control module 160 is disposed on the first branch and connected to the driving element 150, wherein the control module 160 is configured to control whether the driving element 150 is turned on, determine that the control module 160 controls the driving element 150 to be turned on, and the power module 120 supplies power to the driving element 150 so as to enable the driving element 150 to operate normally.

Optionally, the switch assembly 140 of the present embodiment is disposed between the power module 120 and the control module 160, so as to determine whether the control module 160 operates through the switch assembly 140, determine that the control module 160 is in the non-operating state, and stop the activation of the driving element 150 by the control module 160, so that the driving element 150 is in the non-operating state.

Specifically, the output end of the first power supply unit 121 is connected to one end of the switch assembly 140, the other end of the switch assembly 140 is connected to one end of the control module 160, the other end of the control module 160 is connected to the driving member 150, and the driving member 150 is further connected to the output end of the first power supply unit 121.

Determining that the food processing cup is separated from the base, the switch assembly 140 is turned off, the first power supply unit 121 stops supplying power to the control module 160, and the control module 160 stops turning on the driving member 150, so that the driving member 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

In another embodiment, as shown in fig. 5, the switch assembly 140 is disposed between the control module 160 and the driving member 150 to determine whether to turn on the driving member 150 through the switch assembly 140, determine that the switch assembly 140 is turned off, and turn off the connection between the control module 160 and the driving member 150 to make the driving member 140 in the non-operating state.

Specifically, the output end of the first power supply unit 121 is connected to one end of the control module 160, the other end of the control module 160 is connected to one end of the switch assembly 140, and the other end of the switch assembly 140 is connected to the driving member 150.

Determining that the cooking cup is separated from the base, the switch assembly 140 is turned off, and the control module 160 stops the driving member 150 from being turned on, so that the driving member 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

The power module 120 in the embodiments of fig. 2, 4 and 5 can also be replaced by the power module 220 in the embodiment of fig. 3.

In another embodiment, as shown in fig. 6, the present embodiment is different from the embodiment of fig. 5 in that: the switch assembly 140 is disposed between the commercial power receiving module 110 and the first power supply unit 121, and the control module 160 is disposed between the first power supply unit 121 and the driving member 150.

Specifically, one end of the switch component 140 is connected to the first output end of the commercial power receiving module 110, the other end of the switch component 140 is connected to the input end of the first power unit 121, the output end of the first power unit 121 is connected to one end of the control module 160, and the other end of the control module 160 is connected to the driving member 150.

Determining that the food processing cup is separated from the base, the switch assembly 140 is turned off, the commercial power receiving module 110 stops supplying power to the first power supply unit 121, the first power supply unit 121 stops supplying power to the control module 160, and the control module 160 stops turning on the driving member 150, so that the driving member 150 is in a non-working state; and the opening of the switching component 140 has no influence on the second branch, so that the display module 130 keeps normal operation.

Optionally, the driving member 150 comprises a motor module 151 and a heating module 152, wherein the motor module 151 and the heating module 152 are respectively connected to the output of the first power supply unit 121.

Further, the motor module 151 includes a motor driving circuit (not shown) and a motor (not shown), the control module 160 controls the motor driving circuit to drive the motor to work, and the motor drives the processing components such as the stirring rod or the blade to process the food; wherein, the motor can be a three-phase or single-phase motor.

Further, the heating module 152 includes a heating body (not shown) and a heating driving circuit (not shown), and the control module 160 controls the heating driving circuit to drive the heating body to generate heat so as to heat the food; wherein, the heating body can be a heating plate or a coil.

Of course, in other embodiments, the control module 160 can also control and supply the driving member 150 at the same time, and no connection is established between the driving member 150 and the first power supply unit 121.

Optionally, the power supply device 10 further includes an electromagnetic Compatibility (EMC) module 170 disposed between the utility power receiving module 110 and the power supply module 120 for shielding electromagnetic interference of the utility power to the power supply device 10.

The EMC module 170 may be a filter circuit composed of a capacitor or a case having an electromagnetic shielding function, etc.

As shown in fig. 7, the switch assembly 140 includes a first contact 141, a second contact 142 and a connector 143, the first contact 141 is connected to the commercial power receiving module 110, the second contact 142 is connected to the first power unit 121, the connector 143 is disposed corresponding to the bottom of the cooking cup, the cooking cup is determined to be placed on the base, under the pressure of the cooking cup, two ends of the connector 143 respectively abut against the first contact 141 and the second contact 142, so that the first contact 141 and the second contact 142 are conducted, and the switch assembly 140 is in a conducting state; the cooking cup is determined to be separated from the base, the connecting member 143 is away from the first contact 141 and the second contact 142, and the first contact 141 and the second contact 142 are disconnected, so that the switch assembly 140 is in the off state.

The connecting member 143 can be fixed on the base through an elastic member (not shown), the cooking cup is placed on the base, the bottom of the cooking cup applies pressure to the connecting member 143, the elastic member compresses until the two ends of the connecting member 143 abut against the first contact 141 and the second contact 142 arranged on the base, and the switch assembly 140 is turned on; the cooking cup is separated from the base, the bottom of the cooking cup moves upwards, the pressure on the connecting piece 143 is reduced, the elastic piece stretches and pushes the connecting piece 143 upwards, the two ends of the connecting piece 143 are separated from the first contact 141 and the second contact 142, and the first contact 141 and the second contact 142 are disconnected, so that the switch assembly 140 is disconnected.

The connecting member 143 may be a conductive member such as a metal member.

The connecting piece 143 can also be arranged at the bottom of the cooking cup, the cooking cup is placed on the seat body, the connecting piece 143 arranged at the bottom of the cooking cup is abutted against the first contact 141 and the second contact 142 arranged on the seat body, and the switch assembly 140 is conducted; the cooking cup is separated from the base, the connecting member 143 disposed at the bottom of the cooking cup is separated from the first contact 141 and the second contact 142, and the first contact 141 and the second contact 142 are disconnected, so that the switch assembly 140 is disconnected.

In other embodiments, the switch assembly may further include a pressure sensor and a single-pole single-throw switch, the pressure sensor is configured to detect a pressure of the base, and the pressure sensor generates a first control signal to control the single-pole single-throw switch to be turned on when detecting that the pressure on the base is greater than or equal to a preset value; the pressure sensor detects that the pressure on the seat body is smaller than a preset value, and then a second control signal is generated to control the single-pole single-throw switch to be switched off.

Of course, in other embodiments, the switch assembly may take other configurations, which are not described herein.

As shown in fig. 8, the first power unit 121 includes a first transformer T1 and a first power chip U1, the first transformer T1 is disposed between the commercial power receiving module 110 and the driving member 150 and the control module 160, the first power chip U1 is disposed between the first transformer T1 and the driving member 150 and the control module 160, the first transformer T1 transforms the commercial power transmitted from the commercial power receiving module 110, the first power chip U1 stabilizes the transformed voltage to convert the commercial power into a first voltage V12, and the first power chip U1 supplies the first voltage V12 to the driving member 150 and the control module 160.

Further, the first power unit 121 further includes a storage circuit 123, the storage circuit 123 is disposed between the commercial power receiving module 110 and the first transformer T1, and determines that the commercial power receiving module 110 supplies power to the first transformer T1, and the storage circuit 123 stores power. The storage circuit 123 includes a capacitor C11 and a capacitor C12.

The commercial power receiving module 110 includes a receiving port AC _ L and a receiving port AC _ N.

Further, the first power unit 121 further includes a rectifying chip U2, resistors R11-R19, capacitors C13-C19, capacitors C31-C34, a transistor Q1, diodes D1-D3, zener diodes ZD1-ZD3, and an inductor L1.

The two VC ends of the rectifying chip U2 are respectively connected with a receiving port AC _ L and a receiving port AC _ N, the V + end of the rectifying chip U2 is connected with the V-end of the rectifying chip U2 through a capacitor C13, and the V-end of the rectifying chip U2 is grounded; the V + end of the rectifying chip U2 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the first end 1 of the primary winding of the first transformer T1, one end of a capacitor C11, one end of a capacitor C12, one end of a capacitor C14 and one end of a resistor R12, the other end of the capacitor C11 and the other end of a capacitor C12 are grounded, the other end of the capacitor C14 and the other end of the resistor R12 are connected with the negative electrode of a diode D1, the positive electrode of the diode D1 is connected with the second end 3 of the primary winding of the first transformer T1, and the second end 3 of the primary winding of the first transformer T1 is grounded through a capacitor C19; a first end 6 of a secondary winding of the first transformer T1 is connected with the anode of a diode D2 through a resistor R13, the cathode of the diode D2 is connected with the VDD end of the first power chip U1, one end of a capacitor C15 and one end of a capacitor C16, and the other end of the capacitor C15 and the other end of the capacitor C16 are grounded; the second terminal 5 of the secondary winding of the first transformer T1 is grounded; the CS end of the first power chip U1 is grounded through resistors R14 and R15 which are arranged in parallel, and the SW end and the NA end of the first power chip U1 are grounded through a capacitor C19; the COMP end of the first power chip U1 is connected with one end of a capacitor C17 and the source electrode of a triode Q1, and the other end of the capacitor C17 and the drain electrode of the triode Q1 are both grounded; the grid of the triode Q1 is grounded through a capacitor C18 and a resistor R16 which are arranged in parallel, the grid of the triode Q1 is connected with zener diodes ZD1-ZD3 which are sequentially arranged in series through a resistor R17, wherein the anode of the zener diode ZD1 is connected with the resistor R17; a first end 6 of a secondary winding of the first transformer T1 is connected with the anode of a diode D3, and the cathode of a diode D3 is connected with the cathode of a zener diode ZD 3; the resistor R18 is arranged in parallel with the resistor R19, the parallel circuit is arranged in series with the capacitor C19, and the series-parallel hybrid circuit is arranged in parallel with the diode D3; one end of the inductor L1 is connected with the cathode of the diode D3, and the other end of the inductor L1 is connected with the control module 160; the capacitor C31 is connected in parallel with the capacitor C32, one end of the parallel circuit is connected with one end of the inductor L1, and the other end of the parallel circuit is grounded; the capacitor C33 is connected in parallel with the capacitor C34, one end of the parallel circuit is connected with the other end of the inductor L1, and the other end of the parallel circuit is grounded; the other end of the inductor L1 is connected to the driver 150 and the control module 160.

The first end 1 of the primary winding of the first transformer T1 and the first end 6 of the secondary winding of the first transformer T1 are terminals with the same name.

The utility power enters the first power unit 121 through the receiving port AC _ L and the receiving port AC _ N of the utility power receiving module 110, the rectifying chip U2 rectifies the utility power, then filters the utility power through C13, then transmits the filtered utility power to the first transformer T1, the first transformer T1 transforms the utility power and transmits the transformed utility power to the first power chip U1, the first power chip U1 stabilizes the transformed utility power to form a first voltage V12, and the first power chip U1 supplies the first voltage V12 to the control module 160 and the driving member 150.

The storage circuit 123 is configured to store electric quantity when the commercial power receiving module 110 supplies power to the first transformer T1; a peak-voltage-reversal absorption circuit consisting of the capacitor C14, the resistor R12 and the diode D1 is used for absorbing the voltage peak of the leakage inductance of the first transformer T1; the voltage of the first end 6 of the secondary winding of the first transformer T1 is limited by a resistor R13, half-wave rectified by a diode D2, filtered by a capacitor C15 and a capacitor C19, and then provided to the VDD terminal of the first power chip U1; the voltage of the first end 6 of the secondary winding of the first transformer T1 is supplied to the module 160 and the driver 150 after being regulated by the diode D3, filtered by the capacitors C31-C33 and the inductor L1; meanwhile, the voltage regulated by the D3 is fed back to the COMP end of the first power chip U1 through the voltage-regulating diodes ZD1-ZD3, the resistor R17, the triode Q1 and the like, so that the voltage of the first end 6 of the secondary winding of the first transformer T1 is regulated through the first power chip U1, and voltage regulation is realized.

The type of the first transformer T1 is EE 22; the model of the first power supply chip U1 is PN 8147H; the model of the rectifying chip U2 is GBJ-20/80; the model of the triode Q1 is SS 8050; the specifications of the resistors R11-R19 are 22R/2W, 100 omega K/1W, 10 omega/0805, 2 omega/1206, 1 omega K/0805, 1 omega K, 47 omega/1206 and 47 omega/1206 respectively; the specifications of the capacitors C11-C19 are respectively 10u/450V, 103/1kV, 0.47u/275V, 332/1kV, 104, 22u/50V, 102/50V, 102/50V and 47p/1kV, and the specifications of the capacitors C31-C34 are respectively 103, 470u/35V and 104; the breakdown voltages of the zener diodes ZD1-ZD3 can be 3.3V, 4.7V and 5.1V respectively; the inductor L1 may be 4.5uH in size. The capacitors C11, C16, C33 and C34 are electrolytic capacitors.

The voltage V11 of the 220V commercial power rectified by the rectifying chip U2 and filtered by the capacitor C13 is about 310V, and the voltage V12 of the voltage V11 transformed by the first transformer T1 and stabilized by the first power chip U1 is about 15V.

As shown in fig. 9, the second power unit 122 includes a second transformer T2 and a second power chip U3, the second transformer T2 is disposed between the commercial power receiving module 110 and the display module 130, the second power chip U3 is disposed between the second transformer T2 and the display module 130, the second transformer T2 transforms the commercial power transmitted from the commercial power receiving module 110, the second power chip U3 stabilizes the transformed voltage to convert the commercial power into a second voltage V22, and the second power chip U3 supplies the second voltage V22 to the display module 130.

Further, the second power supply unit 122 further includes a rectifying chip U4, resistors R20-R29, resistors R40-R43, capacitors C21-C29, capacitors C41-C43, a photo coupler OC, diodes D4-D6, and a zener diode ZD 4.

One VC end of the rectifying chip U4 is connected with the receiving port AC _ L through a resistor R20, the other VC end of the rectifying chip U4 is connected with the receiving port AC _ N, the V + end of the rectifying chip U2 is connected with the V-end of the rectifying chip U2 through a capacitor C21, and the V-end of the rectifying chip U2 is grounded; the V + end of the rectifying chip U4 is connected with the first end 1 of the primary winding of the second transformer T2, one end of a resistor R21 and one end of a capacitor C22, the other end of the resistor R21 is connected with one end of a resistor R22, the other end of a resistor R22 and the other end of a capacitor C22 are both connected with the negative electrode of a diode D4, and the positive electrode of the diode D4 and the second end 2 of the primary winding of the second transformer T2 are both grounded through a capacitor C26; a first end 4 of a first secondary winding of the second transformer T2 is connected with a VDD end of a second power supply chip U3 through a diode D5 and a resistor R23 which are arranged in series; the VDD end of the second power chip U3 is grounded through a capacitor C23 and a capacitor C24 which are arranged in parallel, the CS end of the second power chip U3 is grounded through a resistor R24 and a resistor R25 which are arranged in parallel, the SW end and the NA end of the second power chip U3 are grounded through a capacitor C26, and the COMP end of the second power chip U3 is grounded through a capacitor C25; the resistor R26 is arranged in parallel with the resistor R27, the parallel circuit is arranged in series with the capacitor C27, and the series-parallel hybrid circuit is arranged in parallel with the diode D6; a first end 10 of a second secondary winding of the second transformer T2 is connected to one end of a capacitor C28, one end of a capacitor C29, one end of a resistor R28, one end of a capacitor C41, one end of a capacitor C42 and one end of a resistor R29 through a diode D6, and a second end 8 of the second secondary winding of the second transformer T2, the other end of a capacitor C28, the other end of the capacitor C29, the other end of a capacitor C41, the other end of the capacitor C42 and the other end of a resistor R29 are grounded; the other end of the resistor R28 is connected with a first input end of a photoelectric coupler QC, the first input end of the photoelectric coupler QC is connected with a second input end of the photoelectric coupler QC through a resistor R40, a first output end of the photoelectric coupler QC is connected with a COMP end of a second power chip U3, and a second output end of the photoelectric coupler QC is grounded; the second input end of the photoelectric coupler QC is connected with the negative electrode of the zener diode ZD4, the positive electrode of the zener diode ZD4 is grounded, the negative electrode of the zener diode ZD4 is connected with the control end of the zener diode ZD4 through a resistor R41 and a capacitor C43 which are connected in series, the control end of the zener diode ZD4 is grounded through a resistor R43 and is connected with the negative electrode of the diode D6 through a resistor R42, and the negative electrode of the diode D6 is connected with the display module 130.

The second end 2 of the primary winding of the second transformer T2, the first end 4 of the first secondary winding of the second transformer T2, and the first end 10 of the second secondary winding of the second transformer T2 are terminals with the same name.

The commercial power enters the second power supply unit 122 through the receiving port AC _ L and the receiving port AC _ N of the commercial power receiving module 110, the rectifying chip U4 rectifies the commercial power, then the commercial power is filtered through the C21, then the filtered commercial power is transmitted to the second transformer T2, the second transformer T2 transforms the commercial power and transmits the transformed commercial power to the second power supply chip U3, the second power supply chip U3 converts the transformed commercial power into the second voltage V22, and the second power supply chip U2 supplies the second voltage V22 to the display module 130.

The reverse peak voltage absorption circuit composed of the resistor R21, the resistor R22, the capacitor C22 and the diode D4 is used for absorbing the voltage peak of the leakage inductance of the second transformer T2; the voltage of the first end 4 of the first secondary winding of the second transformer T2 is subjected to half-wave rectification by a diode D5, current limitation by a resistor R23 and the like, and then is supplied to the VDD end of a second power chip U3; the voltage of the first end 10 of the second secondary winding of the second transformer T1 is stabilized by the diode D6, filtered by the capacitor C28, the capacitor C29, the capacitor C41 and the capacitor C42, and then supplied to the display module 130; meanwhile, after the voltage of the first end 10 of the second secondary winding of the second transformer T2 is stabilized by the diode D6, the voltage is fed back to the COMP end of the second power chip U2 through the photocoupler QC, so as to realize the photoelectric isolation and voltage stabilization of the display module 130.

The type of the second transformer T2 is EE 19; the model of the second power supply chip U3 is PN 8147H; the model of the photoelectric coupler QC is PC 817B; the specifications of the resistors R20-R29 are 22R/2W, 240K/1206, 10R/1206, 2 omega/1206, 47/1206, 47/1206, 100R and 1K omega respectively, and the specifications of the resistors R40-R43 are 1K omega, 7.5K omega, 5.1K omega and 4.7K omega respectively; the specifications of the capacitors C21-C29 are 22uF/450V, 332/1KV, 10uF/50V, 104, 102, 47pF/500V, 102/500V, 103 and 1000uF/25V respectively, and the specifications of the capacitors C41-C43 are 1000uF/25V, 104 and 104 respectively; zener diode ZD4 model number TL 431. The capacitors C21, C23, C29 and C41 are electrolytic capacitors.

The voltage V21 of the 220V commercial power rectified by the rectifying chip U4 and filtered by the capacitor C21 is about 310V, and the voltage V21 of the voltage V22 transformed and stabilized by the second transformer T2 and the second power chip U3 is about 5.2V.

The second power unit 122 may be connected to the display module 130 through the interface CON.

In other embodiments, the first power supply unit and the second power supply unit of the present application can be implemented by other circuit structures, chips of other types, and electronic components of other sizes.

The present application further provides a food processor, as shown in fig. 10, the food processor 20 of the present embodiment includes a base 22, a food processing cup 21 and a power supply device 10, the power supply device 10 is disposed on the base 22, and the food processing cup 21 is detachably assembled on the base 22.

Wherein, the switch component in the power supply device 10 is disposed on the surface of the base 22 and disposed corresponding to the bottom of the cooking cup 21, and other components in the power supply device 10 can be disposed on the circuit board 23 inside the base 22.

When the cooking cup is placed on the base, the switch component 140 is turned on to turn on the first branch, so that the commercial power received by the commercial power receiving module 110 is supplied to the driving component 150 through the power module 120, and the commercial power received by the commercial power receiving module 110 is supplied to the display module 130 through the second branch through the power module 120; when it is determined that the food processing cup is separated from the base, the switch assembly 140 is turned off to turn off the first branch, so as to stop supplying power to the driving member 150, and the commercial power received by the commercial power receiving module 110 continues to pass through the power module 120 and supply power to the display module 130 through the second branch, so as to keep the display module 130 working normally.

The structure and operation principle of the switch assembly 140 and the power supply apparatus 10 are not described herein.

Different from the prior art, the power supply device of the food processor comprises a commercial power receiving module, a power supply module, a display module, a switch assembly and a driving piece, wherein the commercial power receiving module, the power supply module, the switch assembly and the driving piece are arranged on a first branch, the commercial power receiving module, the power supply module and the display module are arranged on a second branch, and the switch assembly is arranged on a base body of the food processor to switch between an off state and an on state according to whether the food processing cup is placed on the base body or not; the cooking cup is placed on the seat body, the switch component is conducted to conduct the first branch, so that the commercial power received by the commercial power receiving module supplies power to the driving part through the power supply module, and the commercial power received by the commercial power receiving module supplies power to the display module through the second branch through the power supply module; the cooking cup is determined to be separated from the seat body, the switch component is disconnected to disconnect the first branch, so that the driving part is stopped supplying power, and the commercial power received by the commercial power receiving module continues to be supplied to the display module through the power module and the second branch, so that the display module keeps working normally. This application cooking machine's driving piece and display module set up respectively on the power supply branch of difference, and when the cooking cup breaks away from the pedestal, through the first branch road that the switch module disconnection corresponds with the driving piece, give the driving piece with the stop power supply, make the driving piece be in non-operating condition, can prevent the injury to the user, and at this moment, power module continues to give the display module power supply through the second branch road, make display module can normally work, therefore, this application can realize breaking away from the pedestal at the cooking cup after, display module keeps normally working, can avoid display module to frequently restart, can prolong cooking machine's life and improve user experience.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. The utility model provides a power supply unit of cooking machine, its characterized in that, power supply unit includes commercial power receiving module, power module, display module, switch module and driving piece, commercial power receiving module, power module, switch module and driving piece set up on first branch, and commercial power receiving module, power module and display module set up on the second branch, wherein, switch module sets up on the pedestal of cooking machine in order to place on the pedestal and switch over between disconnection and on-state according to cooking cup;

wherein, confirm that said cooking cup places on said pedestal, the said switch block switches on in order to make the said first branch circuit switch on, thus make the commercial power that the said commercial power receiving module receives supply power for the said driving part through the said power module, and the commercial power that the said commercial power receiving module receives passes through the said power module and supplies power to the said display module through the said second branch circuit; confirm the cooking cup breaks away from the pedestal, the switch module disconnection is so that first branch road disconnection to stop supplying power gives the driving piece, and the commercial power that commercial power receiving module received continues to pass through power module passes through the second branch road power supply extremely display module, so that display module keeps normal work.

2. The power supply device according to claim 1, wherein the power supply module comprises:

the first power supply unit is arranged on the first branch circuit and used for converting commercial power transmitted by the commercial power receiving module into first voltage so as to supply power to the driving part by using the first voltage;

and the second power supply unit is arranged on the second branch circuit and used for converting the commercial power transmitted by the commercial power receiving module into a second voltage so as to supply power to the display module by utilizing the second voltage.

3. The power supply device according to claim 2, wherein the switch assembly is disposed between the mains receiving module and the first power supply unit in the first branch; or

The switch assembly is disposed between the first power supply unit and the driver on the first branch.

4. The power supply of claim 1, wherein the switch assembly is disposed between the power module and the drive member; and/or

The driving part comprises a motor module and a heating module, wherein the motor module and the heating module are respectively connected with the power supply module.

5. The power supply device according to claim 1, characterized by further comprising:

the control module is arranged on the first branch and connected with the driving piece, wherein the control module is used for controlling whether the driving piece is started or not, determining that the control module controls the driving piece to be started, and supplying power to the driving piece by the power supply module so as to enable the driving piece to normally work;

the switch assembly is arranged between the power supply module and the control module, so that whether the control module works or not is determined through the switch assembly, the control module is determined to be in a non-working state, and the control module stops the starting of the driving piece so as to enable the driving piece to be in the non-working state; or the switch assembly is arranged between the control module and the driving piece so as to determine whether to start the driving piece through the switch assembly, determine that the switch assembly is disconnected, and disconnect the control module and the driving piece so as to enable the driving piece to be in a non-working state.

6. The power supply device according to claim 2, characterized in that the power supply device further comprises:

the switch assembly is arranged between the commercial power receiving module and the first power supply unit on the first branch, the control module is arranged between the first power supply unit and the driving piece, the control module is used for controlling whether the driving piece is started or not, the control module is used for determining that the driving piece is controlled to be started by the control module, and the first power supply unit supplies power to the driving piece so as to enable the driving piece to normally work;

the control module is used for controlling the driving piece to be started, and the commercial power receiving module is used for receiving the power supply of the driving piece and supplying the power to the first power supply unit.

7. The power supply device according to claim 1, wherein the switch assembly includes a first contact, a second contact and a connecting member, the connecting member is disposed corresponding to a bottom of the cooking cup, the cooking cup is determined to be placed on the base, two ends of the connecting member respectively abut against the first contact and the second contact, and the first contact and the second contact are conducted to make the switch assembly in a conducting state; confirm the cooking cup breaks away from the pedestal, the connecting piece with first contact reaches the separation of second contact, first contact with the disconnection of second contact, so that the switch module is in the off-state.

8. The power supply device according to claim 2, wherein the first power supply unit includes a first transformer and a first power supply chip, the first transformer is disposed between the commercial power receiving module and the driving member, the first power supply chip is disposed between the first transformer and the driving member, the first transformer transforms the commercial power transmitted from the commercial power receiving module, and the first power supply chip stabilizes the transformed voltage to convert the commercial power into the first voltage;

the second power supply unit comprises a second transformer and a second power supply chip, the second transformer is arranged between the commercial power receiving module and the display module, the second power supply chip is arranged between the second transformer and the display module, the second transformer transforms the commercial power transmitted by the commercial power receiving module, and the second power supply chip stabilizes the voltage after transformation so as to convert the commercial power into the second voltage.

9. The power supply device according to claim 1, further comprising an EMC module disposed between the utility power receiving module and the power supply module for shielding utility power from electromagnetic interference with the power supply device.

10. A food processor, comprising a base, a cup and the power supply device of any one of claims 1-9, wherein the power supply device is disposed on the base, and the cup is detachably mounted on the base.

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