CN208658649U - A kind of juice extractor with heating function - Google Patents
A kind of juice extractor with heating function Download PDFInfo
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- CN208658649U CN208658649U CN201820410626.3U CN201820410626U CN208658649U CN 208658649 U CN208658649 U CN 208658649U CN 201820410626 U CN201820410626 U CN 201820410626U CN 208658649 U CN208658649 U CN 208658649U
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Abstract
The utility model discloses a kind of juice extractors with heating function, including base, motor, press unit, circuit for controlling motor, power circuit, microprocessor, heating device and heating control circuit；Circuit for controlling motor is respectively connected with microprocessor and motor；Microprocessor is connected with heating control circuit, sends first control signal to heating control circuit for after motor work, and when motor meets preset condition, and send second control signal to heating control circuit；Heating control circuit is connected with heating device, and in parallel with circuit for controlling motor, begins to warm up for controlling heating device according to first control signal, controls heater stop heating according to second control signal；Heating device, for heating to the container being placed on pedestal, the rated power of heating device is P, 50W≤P≤450W.By the utility model embodiment, the fruit juice or puree that juice extractor is squeezed out can be heated.
Description
Technical field
The utility model embodiment is related to food processor technology, espespecially a kind of juice extractor with heating function.
Background technique
Juice extractor in the related technology does not have the function of heating fruit juice, and in some scenes, for example winter user needs
The fruit juice of heat is drunk, juice extractor is squeezed out after fruit juice, and user heats fruit juice using cooking apparatus such as micro-wave ovens, but due to microwave
The heating power of the cooking apparatus such as furnace is all bigger, the bad control of the temperature of fruit juice in heating process, it is easy to result in fruit juice
Temperature it is excessively high, not only result in fruit juice in this way and be oxidized, the nutrient element loss in fruit juice also will affect the drinking mouth of user
Sense.
Utility model content
The utility model embodiment provides a kind of juice extractor with heating function, can be to the fruit juice that juice extractor is squeezed out
Or puree is heated, and meets the needs of user is to hot drink.
The utility model embodiment adopts the following technical scheme that
A kind of juice extractor with heating function connects including base, the motor being set in the base, with the base
Press unit, circuit for controlling motor, power circuit and the microprocessor connect, the press unit include that juice chamber and setting exist
Screw rod in the juice chamber, by the motor driven, the juice chamber includes feed inlet, juice opening and slags tap the screw rod
Mouthful, the juice extractor further include: heating device and heating control circuit,
The circuit for controlling motor is respectively connected with the microprocessor and the motor, for controlling the motor work
Make；
The microprocessor is connected with the heating control circuit, is used for after motor work, and the motor
First control signal is sent to the heating control circuit when meeting preset condition, and sends the to the heating control circuit
Two control signals；
The heating control circuit is connected with the heating device, and in parallel with the circuit for controlling motor, is used for basis
The first control signal controls the heating device and begins to warm up, and controls the heating device according to the second control signal
Stop heating；
The heating device is arranged on the pedestal of the base, for carrying out to the container placed on the base
Heating, the rated power of the heating device are P, 50W≤P≤450W.
Optionally, juice extractor further includes current detection circuit；
The current detection circuit, for detecting the operating current of the motor；
The microprocessor is also connected with the current detection circuit, for being greater than in the operating current of the motor or
When equal to predetermined current, Xiang Suoshu heating control circuit sends the first control signal.
Optionally, the microprocessor is also used to,
Timing is carried out to the operating time of the motor, and is equal to the first preset duration in the operating time of the motor
When, Xiang Suoshu heating control circuit sends the first control signal.
Optionally, juice extractor further includes the first temperature sensor；
First temperature sensor is infrared temperature sensor, is arranged on the base, for detecting the appearance
The temperature of food in device；
The microprocessor is also connected with first temperature sensor, for detecting when first temperature sensor
Temperature when being greater than or equal to the first preset temperature, Xiang Suoshu heating control circuit sends the second control signal；Or it uses
In in second preset duration of heating devices heat, Xiang Suoshu heating control circuit sends the second control signal.
Optionally, juice extractor further includes second temperature sensor and heated protective switch；
The second temperature sensor is arranged on the heating device, for detecting the temperature of the heating device；
The microprocessor is also connected with heated protective switch and the second temperature sensor, is also used in institute
When stating the temperature of second temperature sensor detection more than or equal to the second set temperature, controls the heated protective switch and disconnect；
The heated protective switch, connects with the heating device, the heating is controlled for the disconnection by itself
Device stops heating.
Optionally, the heating control circuit includes driving circuit and switching circuit；
The driving circuit is connected with the microprocessor and the switching circuit respectively, for according to first control
Signal processed controls the switching circuit conducting, controls the switching circuit according to the second control signal and disconnects；
The switching circuit is series in the major loop of the heating device, for the on-off by itself to control
It states heating device and begins to warm up or stop heating；Wherein, the heating device connects to form the major loop with AC power source.
Optionally, the driving circuit includes first resistor, second resistance, the first triode and first diode, described
Switching circuit includes the first relay；
The both ends of the first resistor are connected with the base stage of the microprocessor and first triode respectively；
One end of the second resistance is connected with the base stage of first triode, the other end and the power circuit phase
Even；
The emitter of first triode is connected with the power circuit, the collector of first triode with it is described
The cathode of first diode is connected；
The anode of the first diode is connected with the power circuit；
The coil both ends of first relay are connected in parallel on the both ends of the first diode, and the two of first relay
Contact series are in the major loop.
Optionally, the driving circuit includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, capacitor and second
Triode, the switching circuit include bidirectional triode thyristor；
The both ends of the 3rd resistor are connected with the base stage of the microprocessor and second triode respectively；
Circuit both ends after 4th resistance and the capacitor are in parallel respectively with the base stage of second triode and institute
The emitter for stating the second triode is connected, the emitter ground connection of second triode；
The collector of second triode is connected to the control terminal of the bidirectional triode thyristor by the 5th resistance；
The both ends of 6th resistance respectively with the control terminal of the bidirectional triode thyristor and the bidirectional triode thyristor first
Main terminal is connected；
First main terminal of the bidirectional triode thyristor is connected with the firewire of AC power source, and the second of the bidirectional triode thyristor is main
Terminal is connected by the heating device with the zero curve of AC power source.
Optionally, the switching circuit further includes the second relay；
One contact of second relay is connected with the firewire of AC power source, another touching of second relay
Point is connected with a main terminal of the bidirectional triode thyristor, and the zero of another main terminal of the bidirectional triode thyristor and AC power source
Line is connected.
Optionally, the disconnection of two contact of the first relay and closure can be controlled by user.
The beneficial effect of the utility model embodiment includes:
1, the utility model embodiment scheme sends first to heating control circuit by microprocessor after motor work
Signal is controlled, heating control circuit controls heating device according to first control signal and begins to warm up, and microprocessor is also controlled to heating
Circuit processed sends second control signal, and heating control circuit controls heater stop according to second control signal and heats, realizes
Juice extractor heats the fruit juice or puree squeezed out in juice-extracting process, does not need user after the completion of juicing for fruit juice
Or puree is put into the cooking apparatus such as micro-wave oven and heats, and user is facilitated to produce the fruit juice or puree of warm.
2, the utility model embodiment scheme detects electric current when motor works by current detection circuit, works in motor
When electric current when being greater than predetermined current, electric current when illustrating motor work is bigger, juice extractor squeezed the juice it is not unloaded, then
Control heating device is begun to warm up, when avoiding the occurrence of juice extractor zero load the case where dry combustion method.
3, the utility model embodiment scheme is controlled when the operating time of motor is equal to the first preset duration to the heating
Circuit processed sends the first control signal, is begun to warm up with controlling heating device by heating control circuit.Since motor exists
The fruit juice amount or puree that juice extractor is squeezed out when starting turning are fewer, therefore are not that heating device is just when motor starts turning
Heating, but heating devices heat is controlled according to the duration of motor rotation, dress is heated when can also just start turning to avoid motor
It sets and heats up caused dry-fire condition.
4, the utility model embodiment scheme detects the temperature of food by the first temperature sensor, in the temperature detected
When more than or equal to the first preset temperature, illustrates that heating device meets requirement to the heating of food, control heater stop
Heating especially avoids temperature excessively high and leads to avoid the temperature heating by food excessively high when food is fruit juice or puree
Fruit juice or puree is caused to be oxidized, the heating for realizing juice extractor is more intelligent.
5, the utility model embodiment scheme protects heating device by heated protective switch, when second temperature passes
When the temperature of sensor detection is greater than the second set temperature, illustrate that the temperature of detection is excessively high, exception occurs in heating device, then control adds
Heat portective switch disconnects, so that heater stop works, prevents the extremely caused risky operation of heating device.
6, whether the utility model embodiment scheme is connected to using the first relay control heating device with AC power source, with
Whether control heating device is heated, and heating control circuit is fairly simple in the utility model example scheme, facilitates heating
The wiring of control circuit also avoids the cost of heating control circuit excessively high.
7, whether the utility model embodiment scheme is connected to using bidirectional triode thyristor control heating device with AC power source, with
Whether control heating device is heated, and heating control circuit is fairly simple in the utility model example scheme, facilitates heating
The wiring of control circuit also avoids the cost of heating control circuit excessively high.In addition, the turn-off number of times due to bidirectional triode thyristor can be with
It is unrestricted, therefore the service life of bidirectional triode thyristor is long, that is to say, that control heating devices heat does not heat
Number can be unrestricted.
8, in the utility model embodiment scheme switching circuit include two switch, be respectively the second relay and it is two-way can
Silicon is controlled, when starting juice extractor, can control the contact closure of the second relay, passes through control bidirectional triode thyristor when needing to heat
Conducting, so that heating device is heated, when not needing heating, by control bidirectional triode thyristor shutdown, so that heating device
Stop heating, and the second relay is still in closed state, and bidirectional triode thyristor conducting is controlled when such next time needs to heat i.e.
Heating device can be made to be heated, without acting to the second relay, that is to say, that reduce the second relay
The number of contact opening and closing, to extend the service life of the second relay.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is achieved and obtained in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solutions of the utility model, and constitutes part of specification,
It is used to explain the technical solution of the utility model together with embodiments herein, not constitute to technical solutions of the utility model
Limitation.
Fig. 1 is the electrical block diagram of the juice extractor with heating function of the utility model embodiment one；
Fig. 2 is the attachment structure schematic diagram between the power panel, control panel and motor of the utility model embodiment one；
Fig. 3 is the structural schematic diagram of the current detection circuit of the utility model embodiment one；
Fig. 4 is the thermal cut-off of the utility model embodiment one and the attachment structure schematic diagram of heating device；
Fig. 5 is the attachment structure schematic diagram of the heated protective switch and heating device of the utility model embodiment one；
Fig. 6 is the structural schematic diagram of the heating control circuit of the utility model embodiment two；
Fig. 7 is the structural schematic diagram of the heating control circuit of the utility model embodiment three；
Fig. 8 is the structural schematic diagram of the heating control circuit of the utility model embodiment four.
Fig. 1 marked the names of the parts into Fig. 8 are as follows:
01 circuit for controlling motor, 02 microprocessor, 03 heating device, 04 heating control circuit, 041 driving circuit, 042 opens
Powered-down road, 05 power panel, 06 control panel, 07 thermal cut-off, 08 heated protective switch.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with attached drawing to this
The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and
Feature in embodiment can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Embodiment one
The utility model embodiment provides a kind of juice extractor with heating function, which may include base, sets
The motor being placed in base, the press unit, circuit for controlling motor, power circuit and the microprocessor that are connect with base, squeezing group
Part may include juice chamber and the screw rod and extrusion cylinder that are arranged in juice chamber, and screw rod is driven by motor, and juice chamber can wrap
Feed inlet, juice opening and slag notch are included, juice extractor can also include: heating device and heating control circuit.
As shown in Figure 1, circuit for controlling motor 01, is respectively connected with microprocessor 02 and motor M, for controlling motor work
Make.
Microprocessor 02 is connected with heating control circuit 04, is used for after motor work, and motor meets preset condition
When to heating control circuit 04 send first control signal, and to heating control circuit 04 send second control signal.
Heating control circuit 04 is connected with heating device 03, and in parallel with circuit for controlling motor 01, for according to the first control
Signal control heating device 03 processed is begun to warm up, and is controlled heating device 03 according to second control signal and is stopped heating.
Heating device 03, is arranged on the pedestal of base, for being heated to the container being placed on pedestal, heating dress
The rated power for setting 03 is P, 50W≤P≤450W.
Power circuit can be set on power panel 05, and circuit for controlling motor 01, heating control circuit 04 and microprocessor 02 can
To be located on control panel 06, as shown in Fig. 2, power panel 05 is connected with the firewire ACL of AC power source and zero curve ACN, power panel 05
Also it is connected with motor M, powers for motor, power panel 05 is connected with control panel 06, and power panel 05 is also powered for control panel 06.
Further, juice extractor can also include: current detection circuit.
Current detection circuit, for detecting the operating current of motor.
Microprocessor 02, is also connected with current detection circuit, is greater than or equal to default electricity for the operating current in motor
When stream, first control signal is sent to heating control circuit 04.
It should be noted that predetermined current can be the no-load current of motor.Predetermined current I can satisfy: 0.1A≤I≤
0.4A, it is preferred that I value 0.3A.If the operating current of motor is less than predetermined current whithin a period of time, illustrate to squeeze the juice
Journey does not carry out, and does not heat, and continues to test the operating current of motor.If motor in zero load, waits until preset juicing always
(juicing operating time is generally 5 ~ 30 minutes, and the present embodiment can choose 15 minutes as juicing work after operating time reaches
Duration), juice extractor terminates to squeeze the juice, and motor stops working.
Current detection circuit can be circuit as indicated at 3, detect motor by the end IAD in current detection circuit
Operating current.In addition to this, current detection circuit can also realize zero passage detection, by the end ZERO in current detection circuit come
Carry out zero passage detection.
Further, microprocessor 02 can be also used for, and carry out timing to the operating time of motor, and in the work of motor
When duration is equal to the first preset duration, first control signal is sent to heating control circuit 04.
Further, juice extractor can also include the first temperature sensor.
First temperature sensor is infrared temperature sensor, and the temperature on base, for food in detection container is arranged
Degree；
Microprocessor 02 is also connected with the first temperature sensor, for being greater than when the temperature of the first temperature sensor detection
Or when being equal to the first preset temperature (such as 40 DEG C), second control signal is sent to heating control circuit 04.
Or microprocessor 02 is used for, and when heating device 03 heats the second preset duration, is sent out to heating control circuit 04
Send second control signal.
It should be noted that the second default heating duration is greater than or equal to 7 minutes and is less than or equal to 15 minutes.There are two types of
Mode obtains the second preset duration, wherein it is preferable to use the second way to obtain the second preset duration.
First way:
Second preset duration is just set in juice extractor production, and the second preset duration immobilizes.
The second way:
In multiple predetermined current ranges, the range where the operating current of motor is selected；By pre-set and choosing
The corresponding duration of the range selected out is as the second preset duration.
For example, the corresponding predetermined current range of mushy fruit and the corresponding predetermined current range of xylocarp are preset, if motor
Operating current within the scope of the corresponding predetermined current of mushy fruit, illustrate juice extractor to mushy fruit (such as strawberry, banana, mango, wood
Melon, Kiwi berry, dragon fruit, blueberry etc.) it squeezes the juice, the duration (i.e. second that the fruit juice or puree squeeze out to mushy fruit are heated
Preset duration) it is T1；If the operating current of motor illustrates juice extractor to xylocarp within the scope of the corresponding predetermined current of xylocarp
(such as apple, pineapple, pears) squeeze the juice, duration that the fruit juice or puree squeeze out to xylocarp are heated (i.e. second it is default when
It is long) it is T2.
Further, as shown in figure 4, juice extractor can also include thermal cut-off 07, which is located at heating dress
It sets in 03 major loop, for carrying out overcurrent protection to heating device 03.
That is, when the electric current for flowing through thermal cut-off 07 is greater than specified value, with the heat of thermal cut-off 07 generation itself
Amount makes the melt of thermal cut-off 07 fuse, so that the circuit where heating device 03 disconnects, realizes the overcurrent to heating device 03
Protection.The thermal cut-off 07 can be the recoverable thermal cut-off 07 after fusing, can also after fusing expendable heat
Fuse 07.
Further, as shown in figure 5, juice extractor can also include second temperature sensor and heated protective switch 08.
Second temperature sensor is arranged on heating device 03, for detecting the temperature of heating device 03.
Microprocessor 02 is also connected with second temperature sensor, and the end PIN_SWITCH and the heated protective of microprocessor 02 are opened
08 is closed to be connected, microprocessor 02 is also used to when the temperature that second temperature sensor detects is greater than or equal to the second set temperature,
Heated protective switch 08 is controlled to disconnect.
Heated protective switch 08 is connected with heating device 03, and heating device 03 is controlled for the disconnection by itself and is stopped
Only heat.
Further, heating device 03 may include heating tube or positive temperature coefficient (Positive Temperature
Coefficient, PTC) heater.
Since heating tube and ptc heater have the advantages that heat exchange efficiency is high, it is big to avoid 03 power consumption of heating device.Such as
Fruit is heated using heating tube, heating tube also have the advantages that it is small in size, avoid heating device 03 occupy juice extractor in
Excessive bulk；If heated using ptc heater, ptc heater has the advantages that automatic constant-temperature, according to ptc heater
Heat characteristic curve, it is not in the excessively high feelings of temperature that the temperature of ptc heater, which can reach stationary value, after heating a period of time
Condition is convenient for temperature control, and the temperature for further avoiding heating fruit juice is excessively high and fruit juice is caused to aoxidize, to effectively avoid being lost fruit
Nutritional ingredient in juice.
In the utility model embodiment scheme, sent by microprocessor 02 to heating control circuit 04 after motor work
First control signal, heating control circuit 04 control heating device 03 according to first control signal and begin to warm up, microprocessor 02
Second control signal also is sent to heating control circuit 04, heating control circuit 04 controls heating device according to second control signal
03 stops heating, realizes juice extractor and heats in juice-extracting process to the fruit juice or puree squeezed out, does not need user and exist
Fruit juice or puree are put into the cooking apparatus such as micro-wave oven after the completion of juicing and heated, user is facilitated to produce fruit juice or the fruit of warm
Mud.
In the utility model embodiment scheme, electric current when motor work is detected by current detection circuit, in motor
When electric current when work is greater than predetermined current, electric current when illustrating motor work is bigger, juice extractor juicing rather than it is unloaded, then
Control heating device 03 is heated, and after heating device 03 heats preset time, is then controlled heating device 03 and is stopped heating, keep away
Exempt from the heating of the temperature of fruit juice is excessively high, so that fruit juice be avoided to be oxidized, the heating for realizing juice extractor is more intelligent.
In the utility model embodiment scheme, when the operating time of motor is equal to the first preset duration, controlled to heating
Circuit 04 processed sends first control signal, is begun to warm up with controlling heating device 03 by heating control circuit 04.Due to motor
The fruit juice amount or puree that juice extractor is squeezed out when starting turning are fewer, therefore are not heating device when motor starts turning
03 heats up, but is heated according to the duration control heating device 03 of motor rotation, when can also just start turning to avoid motor
Heating device 03 heats up caused dry-fire condition.
In the utility model embodiment scheme, the temperature of food is detected by the first temperature sensor, what is detected
When temperature is greater than or equal to the first preset temperature or the second preset duration of heating of heating device 03, illustrate that heating device 03 is right
The heating of food meets requirement, and control heating device 03 stops heating, to avoid the temperature heating by food excessively high, especially
It is to avoid temperature excessively high when food is fruit juice or puree and fruit juice or puree is caused to be oxidized, realizes the heating of juice extractor more
Add intelligence.
It in the utility model embodiment scheme, is protected by 08 pair of heating device 03 of heated protective switch, when
When the temperature of two temperature sensors detection is greater than the second set temperature, illustrate that the temperature of detection is excessively high, heating device 03 occurs different
Often, then the disconnection of heated protective switch 08 is controlled, so that heating device 03 stops working, prevents the abnormal caused danger of heating device 03
Danger operation.
It should be understood that the juice extractor can also be not provided with extrusion cylinder, the extrudate with juice collection cavity wall and screw rod
Material, and the gap by being formed between screw rod and juice collection cavity wall carries out gap filtering.
Embodiment two
The embodiment is that on the basis of example 1, heating control circuit 04 may include driving circuit 041 and switch
Circuit 042.
As shown in fig. 6, driving circuit 041 includes first resistor R1, second resistance R2, the first triode Q1 and the one or two pole
Pipe D1, switching circuit 042 include the first relay K1；The both ends of the first resistor R1 PIN_RELAY1 with microprocessor 02 respectively
End is connected with the base stage of the first triode Q1, the both ends of the second resistance R2 emitter and the one or three with the first triode Q1 respectively
The base stage of pole pipe Q1 is connected, and the emitter of the first triode Q1 is connected with the VCC1 in power circuit, the collection of the first triode Q1
Electrode is connected with the cathode of first diode D1, and the anode of first diode D1 is connected with the VCC2 in power circuit, first after
The coil both ends of electric appliance K1 are parallel to the both ends of first diode D1, two contact series of the first relay K1 in major loop,
I.e. the contact of the first relay K1 and heating device 03 connect after circuit both ends respectively with the firewire ACL of AC power source and exchange
The zero curve ACN of power supply is connected.
It is illustrated below with reference to working principle of the Fig. 6 to heating control circuit 04, in the utility model embodiment, squeezes
The key that juicing key can be equipped on juice machine, heat key and long-pressing motor reversal.
One, user triggers the juicing key set on juice extractor, and the motor of juice extractor is started to work, the fruit juice that juice extractor is squeezed out
Or puree, under normal temperature state, in the motor course of work, when motor meets preset condition, for example the operating current of motor is greater than
Or when being equal to the operating time of predetermined current or motor equal to the first preset duration, microprocessor 02 passes through PIN_RELAY1
It holds to driving circuit 041 and sends high level signal (first control signal heated for controlling heating device 03), the
One triode Q1 conducting, the coil of the first relay K1 power on, therewith the contact closure of the first relay K1, so that heating device
03 connects with AC power source, and heating device 03 is heated using AC power source.It is understood that can be equipped on juice extractor
To substitute juicing key and heating key, user triggers the hot moulding key set on juice extractor, juicing for hot moulding key and cold press key
The motor of machine is started to work, and in the motor course of work, microprocessor 02 passes through PIN_RELAY1 when motor meets preset condition
It holds to driving circuit 041 and sends high level signal.
In 03 heating process of heating device, if the temperature of food is greater than or equal to the first preset temperature, or heating dress
03 the second preset duration of heating is set, microprocessor 02 sends low level signal (i.e. for controlling heating device to driving circuit 041
03 stops the second control signal of heating), the first triode Q1 shutdown, electricity under the coil of the first relay K1, therewith first after
The contact of electric appliance K1 disconnects, so that heating device 03 and AC power source disconnect, heating device 03 stops heating.
Two, for such as fruit squazzer in standby mode, user triggers heating key, and triggering juicing key, can not control directly
Refrigerating/heating apparatus 03 is heated.Pass through when detection motor works if if during heating, user triggers juicing key
Electric current adjusts the time of 03 continuous heating of heating device, to preferably control temperature, avoids overheat and heating time too long
Caused fruit juice or puree are oxidized.
If three, user triggers the key of long-pressing motor reversal, while pressing heating key, heating device 03 is without adding
Heat.
Further, the disconnection of two contact of the first relay and closure can be controlled by user.
That is the disconnection of two contacts of the first relay and closure can be controlled by microprocessor, can also by with
Family manually controls.
In the utility model embodiment scheme, using the first relay control heating device 03 whether with AC power source connect
Logical, to control whether heating device 03 is heated, heating control circuit 04 is fairly simple in the utility model example scheme,
Facilitate the wiring of heating control circuit 04, also avoids the cost of heating control circuit 04 excessively high.
Embodiment three
The embodiment is that on the basis of example 1, heating control circuit 04 may include driving circuit 041 and switch
Circuit 042.
As shown in fig. 7, driving circuit 041 include 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6,
Capacitor C1 and the second triode Q2, switching circuit 042 include bidirectional triode thyristor TR；The both ends of 3rd resistor R3 respectively with micro process
The end PIN_TRIAC of device 02 is connected with the base stage of the second triode Q2；Circuit both ends after 4th resistance R4 and capacitor C1 are in parallel
It is connected respectively with the emitter of the base stage of the second triode Q2 and the second triode Q2, the emitter ground connection of the second triode Q2；
The collector of second triode Q2 is connected to the control terminal of bidirectional triode thyristor TR by the 5th resistance R5；The both ends of 6th resistance R6
It is connected respectively with the first main terminal of the control terminal of bidirectional triode thyristor TR and bidirectional triode thyristor TR；The first of bidirectional triode thyristor TR is main
Terminal is connected with the firewire ACL of AC power source, and the second main terminal of bidirectional triode thyristor TR passes through heating device 3 and AC power source
Zero curve ACN is connected.
It is illustrated below with reference to working principle of the Fig. 7 to heating control circuit 04, in the utility model embodiment, squeezes
The key that juicing key can be equipped on juice machine, heat key and long-pressing motor reversal.
One, user triggers the juicing key set on juice extractor, and the motor of juice extractor is started to work, the fruit juice that juice extractor is squeezed out
Or puree, under normal temperature state, in the motor course of work, when motor meets preset condition, for example the operating current of motor is greater than
Or when being equal to the operating time of predetermined current or motor equal to the first preset duration, microprocessor 02 passes through the end PIN_TRIAC
It is sent high level signal (first control signal heated for controlling heating device 03) to 3rd resistor R3, the two or three
Pole pipe Q2 conducting, so that bidirectional triode thyristor TR is connected, heating device 03 and AC power source are connected, and heating device 03 utilizes alternating current
It is heated in source.
In 03 heating process of heating device, if the temperature of food is greater than or equal to the first preset temperature, or heating
Device 03 heats the second preset duration, and microprocessor 02 sends low level signal to driving circuit 041 by the end PIN_TRIAC
(second control signal for stopping heating for controlling heating device 03), the second triode Q2 is disconnected, so that bidirectional triode thyristor
TR shutdown, heating device 03 and AC power source disconnect, and heating device 03 stops heating.It is understood that if heating device
03 work of motor when beginning to warm up, then when motor stops working, even if the temperature of temperature sensor detection is less than or equal to
First preset temperature, heating device 03 also stop heating.It, can be two-way controllable by controlling when heating device 03 is heated
The turn-on time of silicon TR controls the heating gear of heating device 03, to realize dynamic adjustment heating.For example, control is two-way controllable
Silicon TR, for a duty cycle, was turned off 2 seconds, such heating device 03 was every two seconds with 4 seconds if bidirectional triode thyristor TR is connected 2 seconds
Heating is primary, and primary heating is for 2 seconds, and the operation range of heating device 03 is low-grade location in this case；If two-way controllable
Silicon TR is conducting under each duty cycle, and such heating device 03 is continuous heating, in this case heating device 03
Operation range be high tap position.
If two, user triggers the key of the long-pressing motor reversal set on juice extractor, while triggering heating key, heating dress
03 is set without heating.
In the utility model embodiment scheme, using bidirectional triode thyristor TR control heating device 03 whether with AC power source
Connection, to control whether heating device 03 is heated, heating control circuit 04 compares simple in the utility model example scheme
It is single, facilitate the wiring of heating control circuit 04, also avoids the cost of heating control circuit 04 excessively high.In addition, due to two-way controllable
The turn-off number of times of silicon TR can be unrestricted, and the service life of bidirectional triode thyristor TR is long, control heating device 03 heating or
The number that person does not heat can be unrestricted.
Embodiment three
The present embodiment is on the basis of example 2, to increase a switch (i.e. the second relay) in switching circuit 042.
As shown in figure 8, switching circuit 042 can also include the 7th resistance R7, the 8th resistance R8, third transistor Q3, the
Two diode D2 and the second relay K2, the both ends of the 7th resistance R7 respectively with the end PIN_RELAY2 of microprocessor 02 and third
The base stage of triode Q3 is connected, the both ends of the 8th resistance R8 respectively with the emitter of third transistor Q3 and third transistor Q3
Base stage is connected, and the emitter of third transistor Q3 is connected with power circuit, the collector of third transistor Q3 and the second diode
The cathode of D2 is connected, and the anode of the second diode D2 is connected with power circuit, and the coil both ends of the second relay K2 are parallel to the
First main terminal at the both ends of two diode D2, bidirectional triode thyristor TR passes through the contact of the second relay K2 and the fire of AC power source
Line ACL is connected.
The circuit diagram in Fig. 8 is described further below.
When juice extractor connects AC power source, microprocessor 02 sends high electricity to the 7th resistance R7 by the end PIN_RELAY2
Ordinary mail number, i.e. PIN_RELAY2=1, third transistor Q3 conducting, the contact closure of the second relay K2.It is squeezed if user triggers
The juicing key set on juice machine, the motor of juice extractor are started to work, the fruit juice or puree that juice extractor is squeezed out under normal temperature state,
In the motor course of work, when motor meets preset condition, for example the operating current of motor is greater than or equal to predetermined current, Huo Zhe electricity
When the operating time of machine is equal to the first preset duration, microprocessor 02 sends high electricity to 3rd resistor R3 by the end PIN_TRIAC
Ordinary mail number, i.e. PIN_TRIAC=1, the second diode D2 conducting, bidirectional triode thyristor TR conducting, heating device 03 are connected to alternating current
Source, so that heating device 03 is heated.It is greater than or equal to the first preset temperature in the temperature of food or heating device 03 adds
When hot second preset duration, microprocessor 02 sends low level signal, i.e. PIN_TRIAC=0, the two or two pole to 3rd resistor R3
Pipe D2 shutdown, bidirectional triode thyristor TR are disconnected, and heating device 03 stops heating.In addition, during heating device 03 heats, it can
To control heating power by proportional, integral-derivative (Proportion-Integral-Derivative, PID) control algolithm,
Effectively control food temperature.Reaching the first preset temperature in food temperature, (general limit value is 40 ± 5 degrees Celsius, guarantees fruit juice not
It is oxidized) when, heating power can be adjusted by adjusting the turn-on time of bidirectional triode thyristor, in order to avoid overheat, motor stops work
Make then whole system and enter end state, heats while cancelling.
When juice extractor is not connected with AC power source, microprocessor 02 is sent by the end PIN_RELAY2 to the 7th resistance R7 low
Level signal, i.e. PIN_RELAY2=0, third transistor Q3 are disconnected, and the contact of the second relay K2 disconnects.
In the utility model embodiment scheme, switching circuit 042 include two switch, be respectively the second relay K2 and
Bidirectional triode thyristor TR can control the contact closure of the second relay K2, pass through control when needing to heat when starting juice extractor
Bidirectional triode thyristor TR conducting, when not needing heating, is closed so that heating device 03 is heated by control bidirectional triode thyristor TR
Disconnected, so that heating device 03 stops heating, and the second relay K2 is still in closed state, needs to heat time control such next time
Bidirectional triode thyristor TR conducting processed can be such that heating device 03 is heated, without being acted to the second relay K2,
That is reducing the number of the contact opening and closing of the second relay K2, to extend the service life of the second relay K2.
Although embodiment disclosed by the utility model is as above, the content only the utility model for ease of understanding
And the embodiment used, it is not intended to limit the utility model.Technical staff in any the utility model fields,
Under the premise of not departing from spirit and scope disclosed by the utility model, it can be carried out in the form and details of implementation any
Modification and variation, but the scope of patent protection of the utility model, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of juice extractor with heating function is connect including base, the motor being set in the base, with the base
Press unit, circuit for controlling motor, power circuit and microprocessor, the press unit include juice chamber and be arranged in institute
The screw rod in juice chamber is stated, for the screw rod by the motor driven, the juice chamber includes feed inlet, juice opening and slag notch,
It is characterized in that, the juice extractor further include: heating device and heating control circuit,
The circuit for controlling motor is respectively connected with the microprocessor and the motor, for controlling the motor work；
The microprocessor is connected with the heating control circuit, is used for after motor work, and the motor meets
First control signal is sent to the heating control circuit when preset condition, and sends the second control to the heating control circuit
Signal processed；
The heating control circuit is connected with the heating device, and in parallel with the circuit for controlling motor, for according to
First control signal controls the heating device and begins to warm up, and controls the heater stop according to the second control signal
Heating；
The heating device is arranged on the pedestal of the base, for being heated to the container placed on the base,
The rated power of the heating device is P, 50W≤P≤450W.
2. the juice extractor according to claim 1 with heating function, which is characterized in that further include current detection circuit；
The current detection circuit, for detecting the operating current of the motor；
The microprocessor is also connected with the current detection circuit, for being greater than or equal in the operating current of the motor
When predetermined current, Xiang Suoshu heating control circuit sends the first control signal.
3. the juice extractor according to claim 1 with heating function, which is characterized in that the microprocessor is also used to,
Timing is carried out to the operating time of the motor, and when the operating time of the motor is equal to the first preset duration, to
The heating control circuit sends the first control signal.
4. the juice extractor according to any one of claim 1 to 3 with heating function, which is characterized in that further include
One temperature sensor；
First temperature sensor is infrared temperature sensor, is arranged on the base, for detecting in the container
The temperature of food；
The microprocessor is also connected with first temperature sensor, for the temperature when first temperature sensor detection
When degree is greater than or equal to the first preset temperature, Xiang Suoshu heating control circuit sends the second control signal；Or be used for,
When second preset duration of heating devices heat, Xiang Suoshu heating control circuit sends the second control signal.
5. the juice extractor according to claim 1 with heating function, which is characterized in that further include second temperature sensor
It is switched with heated protective；
The second temperature sensor is arranged on the heating device, for detecting the temperature of the heating device；
The microprocessor is also connected with heated protective switch and the second temperature sensor, is also used to described the
When the temperature of two temperature sensors detection is greater than or equal to the second set temperature, controls the heated protective switch and disconnect；
The heated protective switch, connects with the heating device, the heating device is controlled for the disconnection by itself
Stop heating.
6. the juice extractor according to claim 1 with heating function, which is characterized in that the heating control circuit includes
Driving circuit and switching circuit；
The driving circuit is connected with the microprocessor and the switching circuit respectively, for being believed according to first control
Number control switching circuit conducting, controls the switching circuit according to the second control signal and disconnects；
The switching circuit is series in the major loop of the heating device, and described add is controlled for the on-off by itself
Thermal begins to warm up or stops heating；Wherein, the heating device connects to form the major loop with AC power source.
7. the juice extractor according to claim 6 with heating function, which is characterized in that the driving circuit includes first
Resistance, second resistance, the first triode and first diode, the switching circuit include the first relay；
The both ends of the first resistor are connected with the base stage of the microprocessor and first triode respectively；
One end of the second resistance is connected with the base stage of first triode, and the other end is connected with the power circuit；
The emitter of first triode is connected with the power circuit, the collector of first triode and described first
The cathode of diode is connected；
The anode of the first diode is connected with the power circuit；
The coil both ends of first relay are connected in parallel on the both ends of the first diode, two contacts of first relay
It is series in the major loop.
8. the juice extractor according to claim 6 with heating function, which is characterized in that the driving circuit includes third
Resistance, the 4th resistance, the 5th resistance, the 6th resistance, capacitor and the second triode, the switching circuit include bidirectional triode thyristor；
The both ends of the 3rd resistor are connected with the base stage of the microprocessor and second triode respectively；
Circuit both ends after 4th resistance and the capacitor are in parallel respectively with the base stage of second triode and described the
The emitter of two triodes is connected, the emitter ground connection of second triode；
The collector of second triode is connected to the control terminal of the bidirectional triode thyristor by the 5th resistance；
The both ends of 6th resistance the first main side with the control terminal of the bidirectional triode thyristor and the bidirectional triode thyristor respectively
Son is connected；
First main terminal of the bidirectional triode thyristor is connected with the firewire of AC power source, the second main terminal of the bidirectional triode thyristor
It is connected by the heating device with the zero curve of AC power source.
9. the juice extractor according to claim 8 with heating function, which is characterized in that the switching circuit further includes
Two relays；
One contact of second relay is connected with the firewire of AC power source, another contact of second relay with
One main terminal of the bidirectional triode thyristor is connected, another main terminal and the zero curve phase of AC power source of the bidirectional triode thyristor
Even.
10. the juice extractor according to claim 7 with heating function, which is characterized in that first relay two touches
The disconnection and closure of point can be controlled by user.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820410626.3U CN208658649U (en) | 2018-03-26 | 2018-03-26 | A kind of juice extractor with heating function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820410626.3U CN208658649U (en) | 2018-03-26 | 2018-03-26 | A kind of juice extractor with heating function |
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| CN208658649U true CN208658649U (en) | 2019-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830879A (en) * | 2020-07-28 | 2020-10-27 | 广东美的厨房电器制造有限公司 | Control method, microwave cooking appliance and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830879A (en) * | 2020-07-28 | 2020-10-27 | 广东美的厨房电器制造有限公司 | Control method, microwave cooking appliance and computer readable storage medium |
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Effective date of registration: 20230523 Address after: Building 2, No. 52, 22nd Street, Baiyang Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jiuchuang Home Appliances Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |