CN209017861U - A kind of dryer - Google Patents

Abstract

This application provides a kind of dryer, the dryer includes cabinet, the drying bucket being placed on the upside of cabinet；Parameter setting panel, control panel, heater, the blower for the heat of the heater to be blowed to drying bucket are provided in the cabinet；The parameter setting panel is provided with key and charactron drive module, the CPU for storing parameter for display parameters to be arranged；The heater is ptc heater；The blower is AC blower fan.The dryer of the application, drying course whole-course automation, intelligence are manually on duty without special messenger, reduce cost of labor.

Description

A kind of dryer

Technical field

This application involves a kind of dryer more particularly to a kind of intelligent fruit and vegetable drying machines.

Background technique

With the development of economy, the requirement to agricultural product production efficiency, product quality is higher and higher.Traditional agriculture production In, the products such as fruits and vegetables are typically all naturally dry, and not only production efficiency is low, quality is unstable, and are easy by weather etc. certainly The influence of right condition.

With electronic technology, the development of electrical technology, occurs some type of fruit and vegetable drying machine on the market, they can Realization dries fruits and vegetables using electric power, and the parameters such as temperature, fan speed can be set, improve production to a certain extent Efficiency.But there are also shortcomings for these traditional non intelligent fruit and vegetable drying machines: one, needing special messenger manually on duty, increase Human cost is added；Two, power supply is required high, it is desirable that it cannot be powered off in use process, otherwise drying course can not continue, Limit the use in remote countryside；Three, automation, intelligence degree are inadequate, and it is limited to improve production efficiency effect；Four, machine Parameter setting uses analog quantity knob, can not be particularly shown actual real-time parameter；Five, bulky, peasant household can not be suitble to make With.

Summary of the invention

The application technical problems to be solved are to provide a kind of dryer.

In order to solve the above-mentioned technical problem, this application provides a kind of dryer, the dryer includes cabinet, places Drying bucket on the upside of cabinet, be provided in the cabinet parameter setting panel, control panel, heater, for will be described The heat of heater blows to the blower of drying bucket, the parameter setting panel be provided with key for display parameters to be arranged with Charactron drive module, the CPU for storing parameter；The heater is ptc heater, and the blower is exchange wind Machine.

Preferably, the control panel includes power module, alternating current zero crossing detection module, heater control module, blower Control module, temperature sensor module.

Preferably, the CPU is STM8 single-chip microcontroller, and charactron is common cathode charactron.

Preferably, the alternating current zero crossing detection module includes transformer and optocoupler.

Preferably, the parameter setting panel further includes a buzzer, and the buzzer is for issuing when key The passive buzzer of keypad tone.

Preferably, the temperature sensor module is the NTC thermistor for detecting temperature.

Preferably, the cabinet is made of the stainless steel material of sheet-metal formed.

Preferably, the drying bucket is made of plastic material.

Preferably, when the CPU is also used to have a power failure during drying carries out, parameter setting panel is automatically saved The parameter of setting, incoming call control the dryer continuation later and continue unfinished drying according to the parameter of storage Journey.

Preferably, parameter loads automatically after the CPU is also used to dryer booting.

A kind of dryer of the application, has the advantages that

1. reducing volume, reduce costs, is suitable for peasant household's use；

2. drying course whole-course automation, intelligence, manually on duty without special messenger, reduce cost of labor；

3. not being afraid of power-off in use process, incoming call continues to complete drying course according to pre-set parameter after power-off；

4. whole drying parameter digitlizations, drying course control more accurate, good drying effect；

5. drying stage by stage, temperature, time, wind speed, the temperature return difference in each stage can be set, and be transported automatically after setting Row；

6. the parameter being arranged has memory function, it is not necessarily to Reparametrization when largely drying for a long time in batches, is improved Production efficiency.

Detailed description of the invention

Fig. 1 is a kind of dryer system architecture diagram of the application.

Fig. 2 is the heater control module schematic diagram of the control panel of dryer described herein.

Fig. 3 is the zero crossing detection module and power module schematic diagram of dryer described herein.

Fig. 4 is the fan control module schematic diagram of dryer described herein.

Specific embodiment

The application is described further in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with It more fully understands the application and can be practiced, but illustrated embodiment is not as the restriction to the application.

As shown in Figure 1, the dryer includes parameter setting panel, control panel, heater, blower, cabinet, drying Bucket.Parameter setting panel is integrated with CPU, charactron and key drive module, operation indicating module, buzzer, is mainly responsible for ginseng The functions such as number setting, parameter are shown, system operation controls；Control panel is mainly integrated with power module, zero crossing detection module, heating Device control module, fan control module, temperature sensor module are responsible for system power supply, heater control, air-blower control, temperature The functions such as detection；Heater is responsible for generating thermal energy；Blower is responsible for blowing hot wind；Cabinet is for installation parameter setting panel, control Plate, heater and blower；Drying bucket is for holding the fruits and vegetables being oven-dried.Parameter setting panel is connect with control panel by winding displacement. Preferably, the CPU is STM8 single-chip microcontroller, and charactron is common cathode charactron,

Control interface is provided on the cabinet, the temperature real-time display in control interface, temperature setting, time set It sets, wind speed setting, the parameters such as temperature return difference are by common cathode numeral method, specifically STM8 MCU driving key and number Code pipe driving chip HT1638 is realized.Operating status instruction and 2 stage runnings instruction on right side are that STM8 single-chip microcontroller is direct Light emitting diode is driven to realize.All keys are all that STM8 MCU driving HT1638 is realized in control interface.Control boundary Face includes installation acrylic support plate and the wire drawing panel being arranged on circuit boards.

The dryer of the application, cabinet dry bucket above, the thermal energy that the blower in cabinet generates heater in lower section It is changed into hot wind and blows into drying bucket upwards from cabinet.The fruits and vegetables for needing to dry are held in drying bucket.

As shown in Fig. 2, needing to lead to by the power supply to heater in the system work process of the dryer of the application Break to control the temperature of drying.In drying course, if the temperature of actual measurement passes through the electricity of Fig. 2 lower than the temperature of setting The power supply of heater, heater heating are connected in road, and temperature increases.When temperature is higher than the value of the temperature add-back difference of setting, pass through The circuit of Fig. 2 disconnects the power supply of heater, and heater stops working, and temperature reduces.This process of reciprocation cycle is until dry full mistake Journey terminates.Fig. 2 is that the PA3 mouth of STM8 single-chip microcontroller drives high power relay by NPN triode.When PA3 exports high level, three Pole pipe conducting, relay conducting, heater work；When PA3 exports low level, triode cut-off, relay is disconnected, and heater stops Only work.

As shown in figure 3,220V electric main after U30 transformer, generates 12V alternating current.Become after U31 rectifier bridge For direct current 12V, use is run for system 12V is become 5V direct current by VR1.C28, C29 are filter capacitor.U32 is light Coupling, the effect in circuit are the zero crossings for detecting alternating current, provide reference when for doing rotation speed of fan control to SCM program Point.The output end of optocoupler connects the port PB3 of single-chip microcontroller, this port is set as external interrupt input port.Alternating current positive half period, Optocoupler conducting, PB3 incoming level are low level；Alternating current negative half-cycle, optocoupler cut-off, PB3 incoming level are high level.Just Just rising edge and failing edge are generated when level translation, PB3 is set as rising edge, failing edge triggering external interrupt can be detected friendship The zero crossing of galvanic electricity.

As shown in figure 4, fan control module mainly by optocoupler and Group of Silicon Controlled Rectifier at.MOC3020 optocoupler is used to drive two-way Silicon-controlled Q2；R15 is trigger current resistance, and R19 is the gate electrode resistance of Q2, prevents Q2 by false triggering, improves anti-interference ability.When When the PB2 of single-chip microcontroller exports low level, MOC3020 conducting, triggering Q2 conducting, fan power conducting；When the PB2 of single-chip microcontroller is exported When high level, MOC3020 cut-off, Q2 cut-off, fan power disconnection.R17, C3 form RC resistance capaciting absorpting circuit, to it is silicon-controlled into Row overvoltage protection prevents silicon-controlled breakdown.The control of rotation speed of fan is to trigger controlled silicon conducting by the period, to control friendship The angle of flow of galvanic electricity, and then output voltage is controlled to realize.By Fig. 3 obtain zero-crossing of alternating current after, be delayed one section when Between after again by one trigger pulse of draught fan control circuit of PB2 to Fig. 4, trigger pulse triggers controlled silicon conducting, exchange letter When number zero passage, silicon-controlled automatic cut-off；Next half period, after single-chip microcontroller obtains zero crossing, the identical time that is delayed passes through again PB2 generates trigger pulse and controls controlled silicon conducting, periodically passes through the length of the delay time after control zero crossing in this way The i.e. adjustable voltage for being added in blower both ends, to control rotation speed of fan.

Dryer described herein, in use, being first powered, system can load the ginseng saved when last time energization automatically Number, no matter real time temperature shows current real time temperature whether booting.It, can be by being lowered on key if modifying parameter Whole corresponding parameter value, parameter can automatically save after adjustment.If you do not need to modification parameter, then can be pressed by " ON/OFF " Key booting, system can be run according to the parameter of setting automatically after booting, first operation phase I, rear operation phase II.If running rank Needing to modify parameter in section can also directly be modified by key, but the parameter modified at this time is not remembered.Entire two stages After drying course, system autostop, parameter restores the parameter being arranged to before running automatically.If occurred in drying course Power-off then continues to complete unfinished drying course when incoming call next time according to the parameter before power-off automatically, does not need manual intervention. Entire drying course all realizes automation and intelligence, without artificial on duty.

Embodiment described above is only the preferred embodiment lifted to absolutely prove the application, the protection model of the application It encloses without being limited thereto.Those skilled in the art made equivalent substitute or transformation on the basis of the application, in the application Protection scope within.The protection scope of the application is subject to claims.

Claims (10)

1. a kind of dryer, the dryer includes cabinet, the drying bucket being placed on the upside of cabinet, setting in the cabinet There are parameter setting panel, control panel, heater, the blower for the heat of the heater to be blowed to drying bucket, feature Be: the parameter setting panel be provided with key for display parameters to be arranged with charactron drive module, for storing The CPU of parameter；The heater is ptc heater, and the blower is AC blower fan.

2. a kind of dryer as described in claim 1, which is characterized in that the control panel includes power module, exchanged Zero detection module, heater control module, fan control module, temperature sensor module.

3. a kind of dryer as described in claim 1, which is characterized in that the CPU is STM8 single-chip microcontroller, and charactron is total Cathode digital tube.

4. a kind of dryer as claimed in claim 2, which is characterized in that the alternating current zero crossing detection module includes transformer And optocoupler.

5. a kind of dryer as described in claim 1, which is characterized in that the parameter setting panel further includes a buzzing Device issues the passive buzzer of keypad tone when the buzzer is for key.

6. a kind of dryer as claimed in claim 2, which is characterized in that the temperature sensor module is for detecting temperature The NTC thermistor of degree.

7. a kind of dryer as described in claim 1, which is characterized in that the cabinet is the stainless steel material of sheet-metal formed It is made.

8. a kind of dryer as described in claim 1, which is characterized in that the drying bucket is made of plastic material.

9. a kind of dryer as described in claim 1, which is characterized in that the CPU is also used to during drying carries out When having a power failure, the parameter of parameter setting panel setting is automatically saved, the dryer is controlled after incoming call and is continued according to depositing The parameter of storage continues unfinished drying course.

10. a kind of dryer as described in claim 1, which is characterized in that the CPU is also used to parameter after dryer booting Automatic load.