CN108378724B

CN108378724B - Food processor

Info

Publication number: CN108378724B
Application number: CN201810375627.3A
Authority: CN
Inventors: 刘显武; 王宪强; 曾海波; 张和平; 张浩辉
Original assignee: Techtronic Floor Care Technology Ltd
Current assignee: Techtronic Floor Care Technology Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2020-10-23
Anticipated expiration: 2035-12-16
Also published as: CN108378724A; CN105595869B; CN105595869A

Abstract

The invention relates to a food processor, which comprises a machine base and a cup. The stand comprises a driving unit; a wireless radio frequency transmitting and processing module; and a controller. The controller is operatively connected to the radio frequency transmission and processing module to control operation of the drive unit in use in accordance with processing information of the radio frequency transmission and processing module. The cup includes a cup body adapted to receive food and a lid adapted to snap onto the cup body. The cup includes a tool operable to process food contained in the cup. The cup is adapted to be disposed on the housing to couple the tool with the drive unit for operation by the drive unit. The cup also comprises a detection switch for detecting the buckling of the cup cover and a wireless radio frequency receiving module. The wireless radio frequency receiving module is operatively connected with the detection switch and is adapted to communicate with the wireless radio frequency transmitting and processing module. When the cup body is arranged on the base and the detection switch does not detect that the cup cover is buckled on the cup body, the wireless radio frequency transmitting and processing module cannot identify effective information of the wireless radio frequency receiving module, so that the controller stops the operation of the driving unit or forbids the starting of the driving unit. Therefore, in any working or non-working state of the food processor, once the cup cover is opened by a user, the controller immediately starts a shutdown or protection mechanism, so that the user is effectively prevented from being injured, and the whole process is simple in structure and low in cost.

Description

Food processor

This application is a divisional application of the chinese patent application entitled "food processor" with an application date of 2015, 12/16/h, and an application number of 201510946430.7.

Technical Field

The invention relates to the field of food processing control, in particular to the field of food processing.

Background

With the continuous development of science and technology and the continuous pursuit of people for quality of life, food processing machines have become a necessity of life for people, such as juice extractors, juicers, food processors and the like.

As is known, the existing household food processor generally has a crushing and stirring function, and the household food processor has high requirements on safety no matter what crushing method is used. Whether a typical food processor meets the criteria for operating and operating conditions is that the stirring body in the food processor be properly positioned on the mixer base. However, the open-close state of the cup cover of the stirring body cannot be detected by the judgment standard, if the cup cover is opened by a user, the control system cannot detect the abnormality and cannot adopt a corresponding shutdown or protection mechanism, and once the user (especially a child) mistakenly extends a hand into the stirring cup, the user is easily injured by a stirring cutter which runs at a high speed.

At present, a cup cover opening and closing detection device is arranged on a cup cover of a stirring cup of a food processor, and mechanical conduction and photoelectric (opto-coupler) conduction are generally adopted. The mechanical conduction structure needs more parts, and the mold structure is complex and has higher cost; in photoelectric conduction, a circuit needs to extend into a handle of the stirring cup, and the circuit needs to be electrically isolated, so that more limitations are brought to the design of the circuit and the structure.

Disclosure of Invention

In view of the above, it is necessary to provide a food processor aiming at the problems of complicated structure, high cost and limited design.

In one aspect, the present invention provides a food processor comprising a base and a cup. The stand comprises a driving unit; a wireless radio frequency transmitting and processing module; and a controller. The controller is operatively connected to the radio frequency transmission and processing module to control operation of the drive unit in use in accordance with processing information of the radio frequency transmission and processing module. The cup includes a cup body adapted to receive food and a lid adapted to snap onto the cup body. The cup includes a tool operable to process food contained in the cup. The cup is adapted to be disposed on the housing to couple the tool with the drive unit for operation by the drive unit. The cup also comprises a detection switch for detecting the buckling of the cup cover and a wireless radio frequency receiving module. The wireless radio frequency receiving module is operatively connected with the detection switch and is adapted to communicate with the wireless radio frequency transmitting and processing module. When the cup body is arranged on the base and the detection switch does not detect that the cup cover is buckled on the cup body, the wireless radio frequency transmitting and processing module cannot identify effective information of the wireless radio frequency receiving module, so that the controller stops the operation of the driving unit or forbids the starting of the driving unit.

Preferably, in use, when the cup is arranged on the base and the detection switch detects that the cup cover is buckled on the cup, the wireless radio frequency transmitting and processing module can identify effective information of the wireless radio frequency receiving module and process the effective information to enable the controller to control the operation of the driving unit based on the processed information.

Preferably, the valid information is related to the model of the cup body.

Preferably, the controller controls a functional mode or a workflow of the driving unit based on the processing information.

Preferably, the detection switch and the wireless radio frequency receiving module are connected in the same circuit.

Preferably, the detection switch is a magnetic control switch. In one example, the magnetic switch comprises a magnet and a reed switch which are correspondingly arranged; the magnet is positioned in the cup cover; the reed pipe is positioned in the cup body. In one example, a handle is arranged on the cup body; the reed switch is located in the handle.

Preferably, the wireless radio frequency receiving module is arranged at the bottom of the cup body.

Preferably, the wireless radio frequency receiving module is a radio frequency card. More preferably, the wireless radio frequency receiving module is a passive radio frequency card. The radio frequency card can comprise a receiving antenna and a receiving integrated chip, wherein the receiving antenna is respectively connected with the detection switch and the receiving integrated chip.

Preferably, the wireless radio frequency transmitting and processing module includes a transmitting antenna, a driving circuit, a primary demodulation circuit, a secondary demodulation circuit and a main control chip.

Preferably, the driving unit includes a motor; and the tool comprises a cutter.

Preferably, the food processor further comprises a man-machine operation and display interface, so that a user can select different function keys to perform corresponding process control conveniently.

Preferably, the food processor is a food blender.

In another aspect, the present invention provides a cup for a food processor, comprising: a cup adapted to receive food, the cup including a tool operable to process the food contained therein, the cup adapted to be disposed on a frame of a food processor such that the tool is coupled to a drive unit of the frame for operation by the drive unit; the cup cover is suitable for being buckled on the cup body; wherein the cup further comprises: the detection switch is used for detecting the buckling of the cup cover; and a wireless radio frequency receiving module operatively connected to the detection switch and adapted to communicate with a wireless radio frequency transmitting and processing module of the chassis; when the cup body is arranged on the base and the detection switch does not detect that the cup cover is buckled on the cup body in use, the radio frequency transmitting and processing module of the base cannot identify effective information of the radio frequency receiving module, so that the controller of the base stops the operation of the driving unit or forbids the starting of the driving unit.

Therefore, in any working or non-working state of the food processor, once the cup cover is opened by a user, the controller immediately starts a shutdown or protection mechanism, so that the user is effectively prevented from being injured, and the whole process is simple in structure and low in cost.

Drawings

FIG. 1 is a schematic view of a food processor;

FIG. 2 is a circuit diagram of a detection switch, a wireless RF receiving module and a transmitting antenna;

FIG. 3 is a block diagram of a wireless RF processing module;

FIG. 4 is a schematic diagram of a driving circuit;

FIG. 5 is a schematic diagram of a one-stage demodulation circuit; and

fig. 6 is a schematic diagram of a two-stage demodulation circuit.

Detailed Description

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

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, a food processor comprises a base 10, a cup body 20 arranged on the base 10, a handle 21 arranged on the cup body 20; the cup cover 30 fastened on the cup body 20 further includes a detection switch 210, a radio frequency receiving module 220, a radio frequency transmitting and processing module 110, and a controller (not shown). The detection switch 210, the wireless radio frequency receiving module 220, the wireless radio frequency transmitting and processing module 110 and the controller are electrically connected in sequence. The detection switch 210 controls the wireless radio frequency receiving module 220 according to the opening and closing of the cup cover 30; the radio frequency receiving module 220 is used for feeding back and transmitting the detection signal of the detection switch 210 to the radio frequency transmitting and processing module 110; the radio frequency transmitting and processing module 110 is used for identifying the radio frequency receiving module 220; the controller controls the operation of the food processor based on the processing information from the RF transmitter and processing module 110.

In this embodiment, the power supply provides operating power to the food processor, along with corresponding signal acquisition and power output control. The power output control includes: zero-crossing signal detection of an AC input power supply, working current detection of a food processor, motor power output control of the food processor and the like.

The controller is also used for collecting the whole signal of the food processor, and integrates algorithm processing, flow control and output control into a whole; the system also comprises a man-machine operation and display interface, so that a user can conveniently select different function keys to carry out corresponding flow control.

In this embodiment, the food processor is a food blender, and in other embodiments, the food processor may be a food processor, a juicer, or a soymilk maker, but is not limited thereto.

The detection switch 210 is a magnetic control switch; a magnetic switch, namely a magnetic switch intrusion detector. The magnetron switch 210 includes a magnet 212 and a reed switch 214, and the reed switch 214 is also called a reed switch, and is configured by encapsulating 2 or more than 2 soft iron electrodes in a sealed glass tube filled with an inert gas. In a natural state, the two electrodes are normally open without contact, and the two electrodes are normally closed with contact.

In this embodiment, the electrode is connected to the rf receiving module by a wire, and the magnet 212 is located in the cup cover 30; the reed switch 214 is located in the handle 21; the magnet 212 is disposed to correspond to the reed switch 214. When the cup cover 30 is opened, the magnet 212 is far away from the reed pipe 214, the electrode is automatically disconnected after being demagnetized, and the state of an open circuit is realized. When the cup cover 30 is closed, the magnet 212 is moved to close the reed pipe 214 (when the magnet is close, the soft iron electrode is magnetized and closed due to opposite attraction), so that the radio frequency receiving module 220 is in a normal working state.

The wireless rf receiving module 220 is an rf card, and the rf card includes a receiving ic 221 and a receiving antenna 223, and the receiving antenna 223 is connected to the reed pipe 214 and the receiving ic 221 respectively. Fig. 2 is a circuit diagram of the detection switch, the rf receiving module and the transmitting antenna, and the receiving antenna 223 is an open-loop antenna, which may also be referred to as a first inductor L1. A first soft iron electrode of the reed switch 214 is connected with the first inductor L1, and a second soft iron electrode is connected with the receiving integrated chip 221; the other end of the first inductor L1 is connected to the receiving integrated chip 221.

In the present embodiment, referring to fig. 1 and 2, the integrated chip 221 of the rf card and the receiving antenna 223 are located at the bottom of the cup 20. When the cup 20 is properly mounted on the base 10, the receiving antenna 223 and the receiving ic 221 are in close proximity to the rf transmitting and processing module 110, and are within the effective sensing and identification range.

When lid 30 of the food processor is in an open position, receiving antenna 223 is open loop at the bottom of cup 20. The receiving antenna 223 is separated by two electrical contacts that are connected to the reed switch 214 by wires that extend along the cup 20 to the upper end of the handle 21. When the cup cover 30 is correctly placed on the cup body 20, the magnetic switch 210 is in a closed state, so that the receiving antenna 223 effectively forms a closed loop, and the receiving integrated chip 221 is in a normal working state.

As shown in fig. 3, the wireless rf transmitting and processing module 110 includes a transmitting antenna 112, a driving circuit 114, a primary demodulation circuit 116, a secondary demodulation circuit 118, and a main control chip U1; the output end of the main control chip U1 is respectively connected with the drive circuit 114 and the controller, and the input ends of the drive circuit 114, the primary demodulation circuit 116, the secondary demodulation circuit 118 and the main control chip U1 are sequentially and electrically connected. Referring to fig. 1 and 2, the rf transmitting and processing module 110 is located in the base 10, wherein the transmitting antenna 112 is also referred to as a second inductor L2, and the second inductor L2 is disposed corresponding to the first inductor L1.

As shown in fig. 4, the driving circuit 114 includes a first resistor R1, a second resistor R2, a first transistor Q1, a second transistor Q2, a first capacitor C1, and a second capacitor C2. The collector of the first triode Q1 is connected with the power supply, and the collector of the first triode Q1 is grounded through a first capacitor C1; the emitter of the first transistor Q1 is connected to the emitter of the second transistor Q2. The bases of the first transistor Q1 and the second transistor Q2 are connected with the output end of the main control chip U1 through a first resistor R1. The emitters of the first transistor Q1 and the second transistor Q2 are connected to the first inductor L1 in the wireless rf receiving module 220 through the JP3 serial port via the second resistor R2. A collector of the second triode Q2 is connected with the primary demodulation circuit 116 through a second capacitor C2, and one end of the second capacitor C2 is connected with the primary demodulation circuit 116 and the first inductor L1 in the wireless radio frequency receiving module 220 through a JP3 serial port; the other terminal of the second capacitor C2 is connected to ground.

In this embodiment, the first transistor is an NPN transistor; the second triode is a PNP type triode. The drive circuit adopts the triode with high voltage resistance, can save the circuit structure, is convenient for the circuit layout and saves the space, and the emitting electrodes of the two triodes are connected, thereby avoiding the reverse breakdown of the triodes caused by the action of the reverse electromotive force in the circuit on the triodes.

As shown in fig. 5, which is a schematic diagram of a primary demodulation circuit, the primary demodulation circuit 116 includes: the circuit comprises a third resistor R3, a fourth resistor R4, a fifth resistor R5, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first diode D1, a second diode D2 and a third diode D3. The anode of the first diode D1 is connected to the driving circuit 114 via a third resistor R3; the cathode of the first diode D1 is connected to a third capacitor C3. The third capacitor C3, the fourth resistor R4, the fifth resistor R5, the fifth capacitor C5, the second diode D2 and the third diode D3 are connected in parallel. Both ends of the fourth capacitor C4 are connected to the fourth resistor R4 and the fifth resistor R5, respectively. The anode of the second diode D2 and the cathode of the third diode D3 are both grounded; the cathode of the second diode D2 and the anode of the third diode D3 are both connected to the second-stage demodulation circuit 118.

As shown in fig. 6, which is a schematic diagram of a two-stage demodulation circuit, the two-stage demodulation circuit 118 includes an operational amplifier U2 and a third transistor Q3; the input end of the operational amplifier U2 is connected with the primary demodulation circuit 116 through a sixth resistor R6; the output end of the operational amplifier U2 is connected with the base electrode of a third triode Q3 through a seventh resistor R7; the collector of the third triode Q3 is connected with the main control chip U1; the emitter of the third transistor Q3 is grounded. In the present embodiment, Q3 is an NPN transistor. The circuit further includes electronic components such as a resistor and a capacitor, which are specifically shown in fig. 6 and are not described in detail. The carrier signal is driven and amplified by the processing of the operational amplifier U2, and is transmitted to the main control chip U1 for further processing.

In this embodiment, the main control chip U1 sends a radio frequency signal with a certain frequency (125HKz), when the receiving ic 221 enters the working area, an induced current is generated, and the receiving ic 221 gets energy to be activated. The receiving integrated chip 221 transmits the information such as self-encoding and the like through the receiving antenna 223; the transmitting antenna 112 receives the carrier signal transmitted from the receiving antenna 223, and transmits the carrier signal to the main control chip U1. The main control chip U1 demodulates and decodes the received signal through the rf transmitting and processing module 110, and then sends the demodulated and decoded signal to the controller for related processing. The controller judges the validity of the receiving integrated chip 221 according to the logic operation, performs corresponding processing and control according to different settings, and sends out an instruction signal to control the action of the execution mechanism.

When the food processor is powered on and enters a working state, the cup cover 30 is buckled on the cup body 20, and when the cup cover 30 is correctly placed on the cup body 20, the magnetic control switch 210 is in a closed state, so that the receiving antenna 223 effectively forms a closed loop, and the receiving integrated chip 221 is in a normal working state. After the cup body 20 is correctly placed on the base 10, the main control chip U1 in the rf transmitting and processing module can effectively sense and identify the existence of the receiving ic 221 and the card number information of the receiving ic 221, so that the food processor enters a normal operation process.

In view of the fact that the radio frequency card stores various cup models, for example: large cups, small cups, juice cups, cooking cups, etc.; the food processor enters a normal operation flow, the reader can identify the types of the different cup bodies 20 and transmit the types to the controller, and the controller starts corresponding functions or work flows.

In this embodiment, the cup body of the juicer is placed on the base, and when the reader identifies the type of the cup body, the cup body can be transmitted to the controller to start the pulping and pulping operation mode and process. In other embodiments, if the cooking machine is placed on the base, the reader identifies the type of the cup body and can transmit the type to the controller to start the cooking mode and the process. The cup body can also be a juice extractor, a soybean milk machine and the like.

According to the models of different cups, the functional modes and the working flows of the cups have different operation speeds and different process treatments, and a link of stopping feeding or checking may exist in individual flows, and the cups are specifically customized according to different requirements of users.

When the food processor is in any working or non-working state, once the cup cover is opened by a user, the magnetic control switch in the handle is in an open circuit state due to the removal of the magnet on the cup cover, and meanwhile, the receiving antenna in the cup bottom is also in an open loop state, the wireless radio frequency transmitting and processing module on the base cannot effectively detect effective information of the radio frequency card, the controller in the food processor immediately starts a shutdown or protection mechanism to drive the stirring motor and the stirring tool in the food processor to stop or forbid the startup, so that the injury to the user is effectively avoided, and the whole process is simple in structure and low in cost.

The cup body and the base of the food processor are more concise in structural connection, and the mold is relatively simple in structure; further, the development period of the die is shortened, and the cost is reduced; due to the simple structure, the appearance design of the food processor is more flexible and creative.

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

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

Claims

1. A food processor comprising:

the stand comprises

A drive unit;

a wireless radio frequency transmitting and processing module; and

a controller operatively connected to the RF transmission and processing module to control, in use, the operation of the drive unit in accordance with processing information of the RF transmission and processing module; and

a cup comprising

A cup adapted to receive food, the cup including an implement operable to process food contained therein, the cup adapted to be disposed on the chassis such that the implement is coupled with the drive unit to be operated by the drive unit; and

the cup cover is suitable for being buckled on the cup body;

wherein the cup further comprises:

the detection switch is used for detecting the buckling of the cup cover; and

a wireless radio frequency receiving module operatively connected to the detection switch and adapted to communicate with the wireless radio frequency transmitting and processing module;

when the cup body is arranged on the base and the detection switch does not detect that the cup cover is buckled on the cup body in use, the wireless radio frequency transmitting and processing module cannot identify effective information of the wireless radio frequency receiving module, so that the controller stops the operation of the driving unit or forbids the driving unit to start.

2. The food processor of claim 1, wherein, in use, when the cup is disposed on the base and the detection switch detects that the lid is snapped onto the cup, the RF transmitting and processing module identifies valid information for the RF receiving module and processes the valid information to cause the controller to control operation of the drive unit based on the processed information.

3. The food processor of claim 1, wherein the valid information relates to a model of the cup.

4. The food processor of claim 1, wherein the controller controls a functional mode or workflow of the drive unit based on the processing information.

5. The food processor of claim 1, wherein the detection switch and the radio frequency receive module are connected in the same circuit.

6. The food processor of any of claims 1-5, wherein the detection switch is a magnetically controlled switch.

7. The food processor of claim 6, wherein the magnetically controlled switch includes a correspondingly disposed magnet and reed switch; the magnet is positioned in the cup cover; the reed pipe is positioned in the cup body.

8. The food processor of claim 6, wherein the cup body includes a handle; the magnetic control switch comprises a magnet and a reed switch which are correspondingly arranged; the magnet is positioned in the cup cover; the reed switch is located in the handle.

9. The food processor of any one of claims 1-5, wherein the RF receiving module is built into the bottom of the cup.

10. The food processor of any one of claims 1-5, wherein the wireless RF receiving module is a RF card.

11. The food processor of claim 10, wherein the rf card includes a receiving antenna and a receiving ic, the receiving antenna being connected to the detection switch and the receiving ic, respectively.

12. The food processor of claim 10, wherein the wireless rf receiving module is a passive rf card.

13. The food processor of any one of claims 1 to 5, wherein the wireless radio frequency transmission and processing module comprises a transmission antenna, a driving circuit, a primary demodulation circuit, a secondary demodulation circuit and a main control chip.

14. The food processor of any one of claims 1-5, wherein the drive unit includes a motor; and the tool comprises a cutter.

15. The food processor of any one of claims 1 to 5, further comprising a human-machine interface for facilitating user selection of different function keys for respective process control.

16. A food processor as claimed in any of claims 1 to 5, wherein the food processor is a food blender.

17. A cup for a food processor, comprising:

a cup adapted to receive food, the cup including a tool operable to process the food contained therein, the cup adapted to be disposed on a frame of a food processor such that the tool is coupled to a drive unit of the frame for operation by the drive unit; and

the cup cover is suitable for being buckled on the cup body;

wherein the cup further comprises:

the detection switch is used for detecting the buckling of the cup cover; and

a wireless radio frequency receiving module operatively connected to the detection switch and adapted to communicate with a wireless radio frequency transmitting and processing module of the chassis;

when the cup body is arranged on the base and the detection switch does not detect that the cup cover is buckled on the cup body in use, the radio frequency transmitting and processing module of the base cannot identify effective information of the radio frequency receiving module, so that the controller of the base stops the operation of the driving unit or forbids the starting of the driving unit.