CN210124550U

CN210124550U - Intelligent juice extractor

Info

Publication number: CN210124550U
Application number: CN201920597073.1U
Authority: CN
Inventors: 王旭宁; 蔡建明; 周伟; 杜春年
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-03-06
Anticipated expiration: 2029-04-28

Abstract

The application discloses intelligence juice extractor, the test platform comprises a support, locate the juice collecting cavity on the frame, arrange the extrusion screw in the juice collecting cavity in, be equipped with the rotatory motor of drive extrusion screw in the frame, intelligence juice extractor still includes fruit vegetables soft or hard attribute identification module, fruit vegetables soft or hard attribute identification module includes the controller, and the current detection circuit of connection director and motor, the current detection circuit is used for detecting the operating current of motor, the controller is used for discerning the soft or hard attribute of the rotatory extruded fruit vegetables of extrusion screw according to the measuring result of current detection circuit to operating current, the operating voltage of controller control motor is so that extrusion screw works with the rotational speed that corresponds to soft or hard attribute. This application makes intelligence juice extractor can be adapted to the soft or hard degree of the fruit vegetables that present juice used, intelligently through the voltage of control motor, controls extrusion screw and impels with the rotation of rotational speed reasonable relatively, extrudees the fruit vegetables to help accelerating juice speed, improve juice rate.

Description

Intelligent juice extractor

Technical Field

The utility model relates to a food preparation machine automatically controlled technical field especially relates to an intelligence juice extractor.

Background

The application of the food processor for kitchen use is popularized, which brings great convenience to the life of people, and the juice extractor is one of the common food processors, and a user can use the juice extractor to extract juice from fruits and vegetables such as oranges, apples, carrots, tomatoes and the like. The juicer is provided with a juice collecting cavity, the juice collecting cavity is internally provided with an extrusion screw driven by a motor, when juicing, a user puts fruits and vegetables into the juice collecting cavity, the extrusion screw is rotationally propelled at a certain rotating speed to extrude the fruits and vegetables so as to extract juice of the fruits and vegetables, and the juice is collected in the juice collecting cavity, wherein the faster the rotating speed of the extrusion screw is, the faster the propelling speed of the extrusion screw is.

In the prior art, a motor of a juicer drives an extrusion screw to rotate and advance at a basically fixed rotating speed, so that fruits and vegetables are extruded to be juiced.

However, the existing juice extractor does not distinguish and process the fruits and vegetables with different hardness degrees, so that the juice speed and the juice yield are adversely affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an intelligence juice extractor for solve following technical problem among the prior art: the existing juice extractor can not distinguish and process the fruits and vegetables with different soft and hard degrees, thereby bringing adverse effects to the juice speed and the juice yield.

The embodiment of the application adopts the following technical scheme:

the utility model provides an intelligent juice extractor, includes the frame, locates juice collecting cavity on the frame, arrange in the extrusion screw rod of juice collecting cavity, be equipped with in the frame and be used for the drive the rotatory motor of extrusion screw rod, intelligent juice extractor still includes fruit vegetables soft or hard attribute identification module, fruit vegetables soft or hard attribute identification module includes the controller, and connects the controller with the current detection circuit of motor, current detection circuit is used for detecting the operating current of motor, the controller is used for according to current detection circuit is right operating current's testing result discerns the soft or hard attribute of the rotatory extruded fruit vegetables of extrusion screw rod, the controller control the operating voltage of motor is so that extrusion screw rod is in order to correspond to the rotational speed work of soft or hard attribute.

Optionally, the intelligent juice extractor further comprises: the conduction control module is connected with the motor and the controller;

the conduction control module comprises a transistor, and the working voltage of the motor is controlled by the conduction angle of the transistor.

Optionally, the conduction control module includes an input power supply, a power device, and a rectification circuit connected in sequence, an output end of the rectification circuit is connected to the motor for supplying power, and the transistor is included in the power device.

Optionally, the current detection circuit performs multiple sampling of the operating current of the motor within a first predetermined time period, where the first predetermined time period is t1, and 1s ≦ t1 ≦ 10s, where s represents seconds.

Optionally, each of the multiple rounds of sampling comprises multiple samples within a second predetermined time period, t2, 10ms ≦ t2 ≦ 1s, where ms represents milliseconds.

Optionally, the sampling period of the multiple times of sampling is T, and T is greater than or equal to 1ms and less than or equal to 10 ms.

Optionally, the soft and hard attributes of the fruits and vegetables include soft fruits and vegetables and hard fruits and vegetables, and the value interval of the working current of the motor includes a first current interval corresponding to the soft fruits and vegetables and a second current interval corresponding to the hard fruits and vegetables;

wherein the minimum value of the second current interval is not less than the maximum value of the first current interval.

Optionally, the first rotation speed of the extrusion screw for rotationally extruding the soft fruit and vegetable is higher than the second rotation speed of the extrusion screw for rotationally extruding the hard fruit and vegetable.

Optionally, the first current interval includes at least a part of value intervals between 0.3 and 0.8A, the first rotation speed is r1, and r1 is greater than or equal to 100rpm and less than or equal to 150 rpm; and/or the second current interval comprises at least part of value intervals between 0.8 and 1.6A, the second rotating speed is r2, r2 is more than or equal to 40rpm and less than or equal to 60rpm, wherein A represents ampere, and rpm represents the number of rotations per minute.

Optionally, the value interval of the working current of the motor further includes a third current interval outside the first current interval and the second current interval, and a third rotation speed of the extrusion screw corresponding to the third current interval is not higher than the second rotation speed.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: make intelligence juice extractor can be adapted to the soft or hard degree of the fruit vegetables that present juice extraction used, intelligently through the voltage of control motor, come control extrusion screw to impel with the rotatory of relatively reasonable rotational speed, extrude the fruit vegetables to help accelerating juice speed, improve the juice rate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a partial schematic structural diagram of an intelligent juice extractor according to some embodiments of the present application;

FIG. 2 is a schematic block diagram of a portion of the circuitry within the intelligent juicer of FIG. 1 according to some embodiments of the present application;

FIG. 3 is a detailed schematic diagram of the circuit of FIG. 2 according to some embodiments of the present disclosure;

FIG. 4 is another detailed structural schematic diagram of the circuit of FIG. 2 provided in some embodiments of the present application;

fig. 5 is a schematic workflow diagram of an intelligent juice extractor according to some embodiments of the present application;

in the figure, a machine base 1, a juice collecting cavity 2, an extrusion screw rod 3, a motor 4, a fruit and vegetable soft and hard attribute identification module 5, a controller 51, a current detection circuit 52, a conduction control module 6, an input power supply 61, a power device 62, a transistor 621 and a rectification circuit 63.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The juicer in the prior art supplies power to the motor through fixed voltage, and when fruits and vegetables with different hardness degrees are rotationally squeezed by the squeezing screw, mechanical resistance brought to the squeezing screw is different, so that the rotating speed of the motor can be forced to be passively adjusted within a small range (generally within a range of plus or minus 10%), and further the motor drives the rotating speed of the squeezing screw to be adjusted within a small range, which is a possible performance brought by inherent mechanical characteristics of the motor.

In practical application, a plurality of keys specially used for actively adjusting the rotating speed can be arranged, each key corresponds to different rotating speeds, but the scheme has higher cost and is not beneficial to improving the whole machine integrity, and moreover, the adjustment on the rotating speed is inflexible and the intelligence is poor.

The intelligent juice extractor provided by the application can identify the soft and hard attributes of the fruits and vegetables rotationally extruded by the extrusion screw through detecting the working current of the motor, and then control the working voltage of the motor according to the soft and hard attributes so that the extrusion screw can rotationally advance at a relatively reasonable rotating speed corresponding to the soft and hard attributes to extrude the fruits and vegetables, thereby being beneficial to accelerating the juice outlet speed and improving the juice outlet rate, particularly accelerating the juice outlet speed of the softer fruits and vegetables and particularly improving the juice outlet rate of the harder fruits and vegetables; moreover, the cost is relatively low, the whole machine integration is favorably improved, the regulation of the rotating speed is flexible, and the intelligence is better.

Fig. 1 is a partial structural schematic diagram of an intelligent juice extractor according to some embodiments of the present disclosure, and fig. 2 is a schematic structural schematic diagram of a partial circuit in the intelligent juice extractor of fig. 1 according to some embodiments of the present disclosure.

Referring to fig. 1 and 2, the intelligent juice extractor at least includes a base 1, a juice collecting cavity 2 disposed on the base 1, and an extruding screw 3 disposed in the juice collecting cavity 2, a motor 4 for driving the extruding screw 3 to rotate is disposed in the base 1, the intelligent juice extractor further includes a fruit and vegetable soft and hard attribute identification module 5, the fruit and vegetable soft and hard attribute identification module 5 includes a controller 51, and a current detection circuit 52 connected to the controller 51 and the motor 4, the current detection circuit 52 is used for detecting a working current of the motor 4, the controller 51 is used for identifying soft and hard attributes of fruits and vegetables rotationally extruded by the extruding screw 3 according to a detection result of the current detection circuit 52 on the working current, and the controller 51 controls a working voltage of the motor 4 so that the extruding screw 3 operates at a rotation speed corresponding to the soft and hard attributes. It should be noted that the intelligent juice extractor may also comprise other components not shown in fig. 1 and 2, such as a filter screen or a filter barrel for filtering juice, an operation key on the surface of the intelligent juice extractor for the user to operate, etc.

Under the steady-state operation of the motor 4, the electromagnetic torque of the motor 4 is equivalent to the load torque, the load torque is brought by the extrusion screw 3 and the mechanical resistance applied to the extrusion screw when the extrusion screw rotates to extrude the fruits and vegetables, the softness and hardness of the fruits and vegetables can be reflected, the electromagnetic torque of the motor 4 is in positive correlation with the working current of the motor 4, and therefore the softness and hardness of the fruits and vegetables can also be reflected by the working current of the motor 4. Generally, the softer the fruits and vegetables, the smaller the load torque and, correspondingly, the smaller the working current; the harder the fruit and vegetable is, the greater the load torque and correspondingly the greater the operating current.

Compared with the load torque, the working current is easier to detect, and on the basis, the hardness degree of the fruits and vegetables can be identified by taking the working current as a basis. Specifically, the current detection circuit 52 may detect the working current of the motor 4, and send the detection result of the working current to the controller 51, and the controller 51 may identify the hardness of the fruits and vegetables rotationally extruded by the extrusion screw 3 according to the detection result of the working current.

For the convenience of program processing, the softness and hardness degree of the fruits and vegetables can be represented by a predetermined variable (herein referred to as the softness and hardness property of the fruits and vegetables) which directly or indirectly reflects the softness and hardness degree of the fruits and vegetables, and the actual physical meaning of the variable is, for example, a character tag, the working current of the motor 4, the load torque of the motor 4, and the like. The dividing mode of the soft and hard attributes of the fruits and vegetables can be various. For example, two broad categories can be broadly divided: soft fruits and vegetables (softer fruits and vegetables such as oranges, tomatoes, bananas and the like can belong to the same category) and hard fruits and vegetables (harder fruits and vegetables such as sugarcanes, carrots, celeries and the like can belong to the same category), the following embodiments mainly take the dividing mode as an example for explanation; for another example, more subclasses can be further subdivided for the two major classes, and different subclasses can be arranged in a stepped manner with different hardness degrees. Each of the classified categories may be represented by a representative fruit or vegetable of the category.

Because the intelligent juice extractor identifies the soft and hard properties of the fruits and vegetables according to the working current of the motor 4, the soft and hard properties of the fruits and vegetables can be divided by dividing the value interval of the working current of the motor 4. For example, a first current interval and a second current interval are divided, and the minimum value of the second current interval is not less than the maximum value of the first current interval; the soft fruits and vegetables correspond to the first current interval, that is, if the current working current of the motor 4 is detected to be in the first current interval, it can be determined that the fruits and vegetables which are rotationally extruded by the current extrusion screw 3 are soft fruits and vegetables; the second current interval corresponding to the hard fruit and vegetable, that is, if it is detected that the current working current of the motor 4 is in the second current interval, it can be determined that the fruit and vegetable rotationally extruded by the current extrusion screw 3 is the hard fruit and vegetable.

The end point values of the first and second current intervals may be determined empirically or by actual testing. For example, some relatively soft fruits and vegetables can be artificially used as soft fruits and vegetables, some relatively hard fruits and vegetables can be artificially used as hard fruits and vegetables, then the juice extraction is respectively carried out, the working current of the motor 4 is detected, the value distribution condition of the working current corresponding to each fruit and vegetable is recorded, and the endpoint values of the first current interval and the second current interval are specified according to the value distribution condition.

More intuitively, some embodiments of the present application provide exemplary first and second current intervals, which may be referred to as better results in actual testing. For example, the first current interval may include at least a part of a value interval between 0.3 and 0.8A, and the second current interval may include at least a part of a value interval between 0.8 and 1.6A.

In some embodiments of the present application, the motor 4 may generate current pulsation in actual operation, which may be caused by internal factors such as the structure of the motor 4 itself, or may be caused by unstable power supply for supplying power to the motor 4, or external factors such as uneven squeezing and crushing, fluctuation of initial timing of putting fruits and vegetables in the juicing process. Such current pulsation can bring adverse effect to the identification of the soft and hard attributes of the fruits and vegetables, and even can cause misidentification, and the problem can be solved by filtering the current pulsation. Specifically, the detection result of the working current can be determined by comprehensively considering the performance of the working current of the motor 4 in a period of time, so that the current pulsation can be filtered, and the error identification of the soft and hard attributes of the fruits and vegetables caused by the local sudden change can be prevented.

For example, the current detection circuit 52 may perform multiple sampling cycles on the operating current of the motor 4 within a first predetermined time period, directly average or average the sampled values obtained from the multiple sampling cycles, and use the obtained average value as the current detection result of the operating current. Sampling is performed at least once per round.

For another example, following the above example, further, each sampling round in the above-mentioned multiple sampling rounds may also include multiple sampling rounds within the second predetermined time period. The first predetermined period of time and the second predetermined period of time, particularly how long, may depend on how biased the accuracy and real-time of the detection results are.

The current ripple is generally in the order of milliseconds, and in order to capture the current ripple as much as possible during sampling, the sampling period used may be correspondingly in the order of milliseconds, for example, for multiple samples within the second predetermined time period, the sampling period may be in the order of milliseconds. Correspondingly, the second predetermined time period may be several tens milliseconds to several hundreds milliseconds or even second, the first predetermined time period may also be second, the sampling period of the multiple sampling is denoted as T, the first predetermined time period is denoted as T1, and the second predetermined time period is denoted as T2, for example, 1s ≦ T1 ≦ 10s, 10ms ≦ T2 ≦ 1s, and 1ms ≦ T ≦ 10 ms.

In some embodiments of the present application, the manner in which the controller 51 controls the operating voltage of the motor 4 may be varied. For example, it may be controlled by a transistor, it may be controlled by a variable transformer, etc. The rotating speed of the motor 4 and the rotating speed of the extrusion screw rod 3 driven by the motor 4 are adjusted by controlling the working voltage of the motor 4, compared with the scheme of passively adjusting the rotating speed in the prior art, the driving performance is good, and the intelligent controllable rotating speed adjustment in a larger adjusting range can be realized.

Some embodiments are described below taking the example of controlling the operating voltage of the motor 4 by means of a transistor. In this case, in particular, the intelligent juice extractor may further include a conduction control module 6 connecting the motor 4 and the controller 51, the conduction control module 6 includes a transistor 621, an operating voltage of the motor 4 is controlled by a conduction angle of the transistor 621, the larger the conduction angle of the transistor 621 is, the higher the operating voltage of the motor 4 is, and the transistor 621 may directly or indirectly connect the motor 4 and the controller 51, as shown in fig. 3, and fig. 3 is a detailed structural schematic diagram of the circuit in fig. 2 provided by some embodiments of the present application. The conduction control module 6 may further include other circuits, which are not specifically limited herein and are exemplified below.

Some embodiments of the present application also provide another detailed structural schematic diagram of the circuit in fig. 2, as shown in fig. 4. In fig. 4, the conduction control module 6 includes an input power source 61, a power device 62, and a rectifying circuit 63 connected in sequence, an output end of the rectifying circuit 63 is connected to the motor 4 for supplying power, and the power device 62 at least includes a transistor 621. Of course, the conduction control module 6 may be implemented by other structures; for example, the input power source 61 and the rectifying circuit 63 may not be divided in the conduction control module 6; for another example, the transistor 621 may be included in the rectifier circuit 63; and so on.

In some embodiments of the application, for soft fruits and vegetables, the extrusion screw 3 can be controlled to rotate and advance at a relatively fast rotating speed, so that the juice extraction speed of the soft fruits and vegetables can be accelerated, the phenomenon of material return in the juice extraction process can be prevented, and for hard fruits and vegetables, the extrusion screw 3 can be controlled to rotate and advance at a relatively slow rotating speed, so that the juice extraction rate of the hard fruits and vegetables can be improved. The rotation speed of the extrusion screw 3 when the soft fruit and vegetable is extruded by rotation is recorded as a first rotation speed r1, the rotation speed when the hard fruit and vegetable is extruded by rotation is recorded as a second rotation speed r2, and r1 is higher than r 2. For example, 100rpm ≦ r1 ≦ 150rpm, 40rpm ≦ r2 ≦ 60rpm may be set, in this case, the rotation speed from soft fruits and vegetables to hard fruits and vegetables can be generally increased by 80% to 150%, and the rotation speed suitable for fruits and vegetables with different degrees of hardness can be adjusted, it should be noted that, in this example, it is assumed that the rotation speed of the motor 4 and the extrusion screw 3 driven by the motor is the same, and if the rotation speed of the motor 4 and the extrusion screw 3 is different (for example, due to the inconsistent transmission gear ratio), the rotation speed set in this example may be adjusted accordingly.

In some embodiments of the present application, the range of the operating current of the motor 4 may further include a third current range outside the first current range and the second current range, and for example, the operating current of the motor 4 may be smaller than the minimum value of the first current range when the extrusion screw 4 is idle. If the working current of the motor 4 is in the third current interval, for example, the extrusion screw 4 may be controlled to rotate at a third rotation speed not higher than the second rotation speed, or even the extrusion screw 4 may be controlled to stop rotating, so as to save energy and reduce mechanical loss of the device.

Based on the above description, it is more intuitive that some embodiments of the present application further provide a workflow diagram of an intelligent juice extractor, as shown in fig. 5, and the workflow is described in detail below with reference to fig. 5, wherein exemplary specific parameter values are adopted.

In fig. 5, after the intelligent juice extractor is powered on and started, the working current of the motor 4 is detected; if the working current is not less than 0.3A and less than 0.8A, judging that the fruits and vegetables which are rotationally extruded by the current extrusion screw 3 are soft fruits and vegetables, and further executing a preset soft fruit and vegetable juicing program, wherein the soft fruit and vegetable juicing program at least comprises the step of controlling the extrusion screw 3 to work at a rotating speed corresponding to the soft fruits and vegetables; if the working current is not less than 0.8A and less than 1.6A, the current fruit and vegetable rotationally extruded by the extrusion screw 3 is judged to be hard fruit and vegetable, and a preset hard fruit and vegetable juicing program is executed, wherein the hard fruit and vegetable juicing program at least comprises the step of controlling the extrusion screw 3 to work at a rotating speed corresponding to the hard fruit and vegetable.

The working current of the motor 4 is detected, specifically, the working current can be detected every 500ms, the current sampling detection time is 100ms, the sampling period is 1ms, and within 100ms, the average value of 100 collected current values is obtained and used as the effective value of the working current in the period.

When the working current is detected to be not less than 0.3A and less than 0.8A, continuously detecting for 5s, collecting 10 effective values of the working current, if the 10 effective values are not less than 0.3A and less than 0.8A, judging to be soft fruits and vegetables, and switching to a soft fruit and vegetable juicing program, wherein the switching-on time of the transistor 621 can be controlled to be 6.25ms, so that the extrusion screw 3 works at the rotating speed of 100-150 rpm.

When the working current is detected to be not less than 0.8A and less than 1.6A, continuously detecting for 5s, collecting 10 effective values of the working current, if the 10 effective values are not less than 0.8A and less than 1.6A, determining that the fruit and vegetable are hard, and switching to a hard fruit and vegetable juicing program, wherein the method can include controlling the on-time of the transistor 621 to be 1.25ms, so that the extrusion screw 3 works at a rotating speed of 40-60 rpm.

Compared with a soft fruit and vegetable juicing program, the hard fruit and vegetable juicing program controls the on-time of the transistor 621, and then the working voltage of the motor 4 is increased by 1.5-2 times.

And when the working current is detected to be in other intervals within 5s, switching to a hard fruit and vegetable juicing program to enable the extrusion screw 3 to work at a lower rotating speed.

The following also provides the test results of the rotating speed of the extrusion screw 3 when part of the fruits and vegetables are juiced by using the intelligent juicer, as shown in the following table 1.

TABLE 1

Fruit and vegetable	Carrot (Carex sativus L.)	Celery	Orange	Tomato fruit
					Speed/rpm of the extrusion screw 3	60	65	142	143

In table 1, carrots and parsley are judged as hard fruits and vegetables, oranges and tomatoes are judged as soft fruits and vegetables, and the hardness is sequentially reduced from carrots to parsley, oranges and tomatoes, and correspondingly, the corresponding rotating speed is sequentially increased. Through practical tests, compared with hard fruits and vegetables, the rotating speed of the soft fruits and vegetables is increased by 118% -138%. By using the intelligent juicer, the juice yield of hard fruits and vegetables such as carrots, celery and the like is improved by 2-3%, and the residue rate of fruit and vegetable residues in the juice collecting cavity is reduced by 1-2%; for soft fruits and vegetables such as oranges, tomatoes and the like, the juice yield is improved by 1% -2%, the residue rate of fruit and vegetable residues in the juice collecting cavity is reduced by about 5%, and the juice squeezing time is reduced by 30% -50%, so that the waste can be reduced, and the user experience is improved.

The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides an intelligent juice extractor, includes the frame, locates juice collecting cavity on the frame, arrange in juice collecting cavity's extrusion screw, be equipped with in the frame and be used for the drive the rotatory motor of extrusion screw, a serial communication port, intelligent juice extractor still includes fruit vegetables soft or hard attribute identification module, fruit vegetables soft or hard attribute identification module includes the controller, and connects the controller with the current detection circuit of motor, current detection circuit is used for detecting the operating current of motor, the controller is used for according to current detection circuit is right operating current's testing result discernment the soft or hard attribute of the rotatory extruded fruit vegetables of extrusion screw, the controller control the operating voltage of motor is so that extrusion screw is in order to correspond to the rotational speed work of soft or hard attribute.

2. The intelligent juice extractor of claim 1, further comprising: the conduction control module is connected with the motor and the controller;

3. The intelligent juice extractor as claimed in claim 2, wherein the conduction control module comprises an input power supply, a power device and a rectification circuit which are connected in sequence, an output end of the rectification circuit is connected with the motor for supplying power, and the transistor is included in the power device.

4. The intelligent juice extractor of claim 1, wherein the current detection circuit performs multiple sampling cycles of the operating current of the motor for a first predetermined time period t1, 1s ≦ t1 ≦ 10 s.

5. The intelligent juicer of claim 4 wherein each of said multiple sampling rounds comprises multiple sampling rounds within a second predetermined time period t2, 10ms ≦ t2 ≦ 1 s.

6. The intelligent juice extractor of claim 5, wherein the sampling period of the multiple times of sampling is T, and T is more than or equal to 1ms and less than or equal to 10 ms.

7. The intelligent juice extractor of claim 1, wherein the soft and hard attributes of the fruits and vegetables include soft fruits and vegetables and hard fruits and vegetables, and the value range of the working current of the motor includes a first current range corresponding to the soft fruits and vegetables and a second current range corresponding to the hard fruits and vegetables;

8. The intelligent juice extractor of claim 7, wherein said first rotational speed of said extrusion screw when rotated to extrude soft fruit and vegetable is higher than said second rotational speed of said extrusion screw when rotated to extrude hard fruit and vegetable.

9. The intelligent juice extractor of claim 8, wherein the first current interval comprises at least a partial value interval between 0.3 and 0.8A, the first rotation speed is r1, and r1 is 100rpm and 150 rpm; and/or the second current interval comprises at least part of value intervals between 0.8 and 1.6A, the second rotating speed is r2, and r2 is more than or equal to 40rpm and less than or equal to 60 rpm.

10. The intelligent juice extractor of claim 8, wherein the working current of the motor has a value range that further includes a third current range outside the first current range and the second current range, and a third rotation speed of the extrusion screw corresponding to the third current range is not higher than the second rotation speed.