CN207407681U - Drying baker - Google Patents

Abstract

The utility model discloses a kind of drying bakers,Solve the problems, such as that the excessively high opening chamber door of drying indoor temperature be easy to cause heat wave and hurts sb.'s feelings,Its key points of the technical solution are that,Sliding is equipped with the gag lever post for being plugged in movable limit hole in fixed limit hole,The side wall of baking oven is additionally provided with positioned at power source of the one side of fixed limited block to drive gag lever post sliding flexible,When temperature detecting unit detects that the indoor temperature of drying is more than maximum permissible temperature,Execution unit is inserted by power source drive gag lever post in fixed limit hole and movable limit hole,The drying baker of the utility model,When chamber door is covered on the opening of drying chamber,It will be in the interconnected fixation limit hole of gag lever post insertion and movable limit hole by power source,The position between mobile limited block and fixed limited block can be limited,And then chamber door is locked in the opening of drying chamber,Make it that can not open；The indoor temperature change of drying can be monitored by temperature detecting unit, and then automatically control the start and stop of power source as needed.

Description

Drying baker

Technical field

The utility model is related to drying equipments, more particularly to drying baker.

Background technology

Drying baker for factory and R＆D institution's polymer material drying, resin solidification, pharmacy, baking vanish, electronics, plating, Pharmacy, printing bake and bank up with earth, motor drying, transformer drying, industry heat treatment, disinfection and heating, heat preservation etc. process equipments be used.

Drying baker generally comprises baking oven and the chamber door being covered on baking oven, drying baker in use, in drying chamber Substantial amounts of heat can be generated, if opening chamber door at this time, can cause to rush outside the heat wave in case and hurt sb.'s feelings or damage instrument, therefore also there are one Fixed room for improvement.

Utility model content

The purpose of this utility model is to provide a kind of drying baker, when dry it is indoor when the temperature is excessively high, chamber door can not be opened.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of drying baker, including baking oven, the drying chamber being arranged on baking oven and opening and the pivot joint for being covered on drying chamber In the chamber door on baking oven, the side wall of the baking oven is equipped with fixed limited block in the overthe openings position of drying chamber, the chamber door Upper edge, which is equipped with, to be upwardly extended and offers fixation in the mobile limited block of fixed limited block one side, the fixed limited block Limit hole, offers the movable limit hole being connected with fixed limit hole in the mobile limited block, in the fixed limit hole Sliding is equipped with the gag lever post that is plugged in movable limit hole, the side wall of the baking oven be additionally provided with positioned at the one side of fixed limited block with The power source for driving gag lever post sliding flexible；

It further includes and is arranged in drying chamber and whether for detecting to dry indoor temperature be more than maximum permissible temperature with defeated Go out the temperature detecting unit of temperature detection signal, be coupled to temperature detecting unit to receive temperature detection signal and in response to temperature The execution unit of signal is detected, the temperature detecting unit has an a reference value, and a reference value corresponds to maximum permissible temperature；

When temperature detecting unit detects that the indoor temperature of drying is more than maximum permissible temperature, the execution unit control Power source works, to drive in the fixed limit hole of gag lever post insertion and movable limit hole；Conversely, execution unit cuts off power source, So that power source drive gag lever post extraction activity limit hole and fixed limit hole.

Using the above program, mobile limited block can accordingly be moved with the overturning of chamber door, when chamber door is covered on During the opening of drying chamber, movable limit hole can just be connected with fixed limit hole, be inserted into gag lever post by power source In interconnected fixation limit hole and movable limit hole, the opposite position between mobile limited block and fixed limited block can be limited It puts, and then chamber door is locked in the opening of drying chamber, make it that can not open；Drying chamber can be monitored by temperature detecting unit Interior temperature change, and then the start and stop of power source are automatically controlled as needed；Reach highest permission temperature when drying indoor temperature When spending, execution unit can automatically control power source startup, gag lever post to be driven to be inserted into fixed limit hole and movable limit hole It is interior, with the position between the fixed limited block of locking and mobile limited block, make chamber door that can not open；And at a temperature of in drying chamber After drop, execution unit can cut off power source again, so that power source drive gag lever post is extracted, so as to release mobile limited block and fixation Locking between limited block, so that chamber door can be opened.

Preferably, the temperature detecting unit includes temperature detecting part and the comparing section for providing a reference value；It is described Temperature detecting part dries indoor temperature change with output temperature signal for detecting；The comparing section is coupled to temperature detecting part To receive temperature signal, and rear output temperature detects signal to execution unit compared with a reference value by the value of temperature signal.

Using the above program, comparing section can be by temperature value that temperature detecting part measures by after compared with a reference value Output temperature detects signal to execution unit, makes detection more accurate, moreover it is possible to avoid other extraneous small temperature changes to temperature The temperature detection of degree detection unit impacts.

Preferably, the execution unit includes being coupled to the delay portion of temperature detecting unit and is coupled to holding for delay portion Row portion, the delay portion is in response to temperature detection signal with the current supply circuit of delay cutoff power source.

Using the above program so that dry indoor temperature after safe temperature is dropped to for a period of time, could cut off dynamic The current supply circuit in power source to continue the locking time of gag lever post, further improves security.

Preferably, the output terminal of the comparing section is also coupled to be useful for improving benchmark threshold voltage to reduce highest permission temperature The feedback section of degree.

Using the above program, feedback section provides positive feedback signal for comparing section, makes comparing section in the temperature of output high level After detecting signal, its benchmark threshold voltage can be improved by positive feedback, so as to reduce the maximum permissible temperature corresponding to a reference value, That is recovery temperature avoids the value of temperature detection signal from being fluctuated near maximum permissible temperature value, prevents the state of execution unit not It is disconnected that saltus step occurs, and influence the normal work of power source.

Preferably, the comparing section is also coupled to be useful for the adjustment portion for adjusting a reference value.

Using the above program, adjustment portion can adjust a reference value of comparing section, so as to adjust the highest of temperature detecting unit Allow temperature, to adapt to different operating modes, add the scope of application.

Preferably, whether the comparing section has been also coupled in response to temperature detection signal indicate power source in work The indicating member of state.

Using the above program, the working condition of power source can be indicated by indicating member, and then is enabled a person to clearly Understand whether chamber door is in the lock state, more hommization.

Preferably, the indicating member is light-emitting alarm.

Using the above program, luminous alarm is more eye-catching, can be clearly identified when people need to check, and shines Alarm does not interfere with the crowd on periphery, more hommization.

Preferably, the power source is cylinder, the transmission shaft of the cylinder is fixedly connected with gag lever post, and the cylinder leads to Transmission shaft driving gag lever post is crossed to stretch into line slip.

Using the above program, cylinder installation is easy, simple and quick, right without too complicated step and usage Operating personnel's is of less demanding, greatly improves work efficiency.

In conclusion the utility model has the advantages that：Mobile limited block can be carried out with the overturning of chamber door Corresponding mobile, when chamber door is covered on the opening of drying chamber, movable limit hole can just be connected with fixed limit hole, lead to Cross power source gag lever post is inserted into interconnected fixation limit hole and movable limit hole, can limit mobile limited block with The relative position between limited block is fixed, and then chamber door is locked in the opening of drying chamber, makes it that can not open；Pass through temperature Detection unit can monitor the indoor temperature change of drying, and then automatically control the start and stop of power source as needed；Work as drying chamber When interior temperature reaches maximum permissible temperature, execution unit can automatically control power source startup, gag lever post to be driven to be inserted into In fixed limit hole and movable limit hole, with the position between the fixed limited block of locking and mobile limited block, make chamber door that can not beat It opens；And after the temperature in drying chamber declines, execution unit can cut off power source again, so that power source drive gag lever post is extracted, So as to release the locking between mobile limited block and fixed limited block, so that chamber door can be opened.

Description of the drawings

Fig. 1 is the structure diagram of the present embodiment；

Fig. 2 is the circuit diagram of the present embodiment；

Fig. 3 is the circuit diagram of indicating member in the present embodiment.

In figure：1st, baking oven；3rd, chamber door；4th, fixed limited block；5th, mobile limited block；6th, fixed limit hole；7th, activity /V Hole；8th, gag lever post；9th, power source；11st, temperature detecting part；12nd, comparing section；13rd, delay portion；14th, enforcement division；15th, feedback section； 16th, adjustment portion；17th, indicating member；18th, hinge.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but As long as it is all protected in the right of the utility model be subject to Patent Law.

A kind of drying baker disclosed in the present embodiment, as shown in Figure 1, including baking oven 1, the drying chamber being arranged on baking oven 1 with And the chamber door 3 for being covered on the opening of drying chamber and being articulated on baking oven 1, drying chamber are opened on the side wall of baking oven 1, chamber door 3 is logical It crosses hinge 18 and the side wall of baking oven 1 is pivotally connected.

As shown in Figure 1, the side wall of baking oven 1 is equipped with fixed limited block 4 in the overthe openings position of drying chamber, chamber door 3 it is upper Edge, which is equipped with, to be upwardly extended and offers fixed limit in the mobile limited block 5 of fixed 4 one side of limited block, fixed limited block 4 Position hole 6 offers the movable limit hole 7 being connected with fixation limit hole 6 in mobile limited block 5.Mobile limited block 5 can be with case Door 3 folding and moved, when chamber door 3 is covered on the opening of drying chamber, mobile limited block 5 is placed exactly in fixed /V The one side of block 4, and movable limit hole 7 is made to be connected with fixed limit hole 6.At this point, mobile limited block 5 is protected with fixed limited block 4 Hold interval, so that mobile limited block 5 can smoothly be moved to the one side of fixed limited block 4 or leave fixed limited block 4, Without mutually hindered.Sliding is equipped with the gag lever post 8 for being plugged in movable limit hole 7 in fixed limit hole 6, passes through /V Bar 8 can lock together mobile limited block 5 and fixed limited block 4, so as to limit the position of chamber door 3, make chamber door 3 that can not beat It opens.Gag lever post 8 is extracted, the locking between mobile limited block 5 and fixed limited block 4 can be released, so that chamber door 3 can be beaten It opens.

As shown in Figure 1, the side wall of baking oven 1 is additionally provided with positioned at the one side of fixed limited block 4 to drive the sliding of gag lever post 8 flexible Power source 9, power source 9 be cylinder, preferably mutually fixed by the side wall of clip or screw and baking oven 1, the transmission shaft of cylinder It is fixedly connected with gag lever post 8, it is preferred to use the mode of welding is fixed, and the length of the transmission shaft of cylinder and gag lever post 8 Direction is consistent so that cylinder can be stably driven with gag lever post 8 by transmission shaft and be stretched into line slip.When gag lever post 8 from It fixes in limit hole 6 after extracting, the movable end of gag lever post 8 is located at the one side of fixed limited block 4, and cylinder is preferably used and automatically reset Formula cylinder.

It is arranged in drying chamber as shown in Fig. 2, further including and dries whether indoor temperature permits more than highest for detecting Perhaps temperature with the temperature detecting unit of output temperature detection signal, be coupled to temperature detecting unit to receive temperature detection signal simultaneously In response to the execution unit of temperature detection signal, temperature detecting unit has an a reference value, and a reference value, which corresponds to highest, allows temperature Degree.When temperature detecting unit detects that the indoor temperature of drying is more than maximum permissible temperature, execution unit control 9 work of power source Make, to drive in the fixed limit hole 6 of the insertion of gag lever post 8 and movable limit hole 7；Conversely, when temperature detecting unit detects drying When indoor temperature is less than maximum permissible temperature, execution unit cut-out power source 9 is lived so that power source 9 drives gag lever post 8 to extract Dynamic limit hole 7 and fixed limit hole 6.

As shown in Fig. 2, temperature detecting unit includes temperature detecting part 11 and the comparing section 12 for providing a reference value.

Temperature detecting part 11 dries indoor temperature change with output temperature signal for detecting.As shown in Fig. 2, temperature is examined Survey portion 11 includes thermistor Rt, resistance R6 and R7, and one end of resistance R7 is coupled to voltage V2, and the other end is coupled to thermistor One end of Rt, the other end ground connection of thermistor Rt, one end of resistance R6 are coupled to the tie point of thermistor Rt and resistance R7, Other end output temperature signal to comparing section 12, the output terminal of resistance R6 is also grounded by capacitance C2.Wherein thermistor Rt is excellent Choosing is using negative tempperature coefficient thermistor, i.e. resistance value reduces with the rise of temperature, conversely, increasing with the reduction of temperature. And probe preferably is made in thermistor Rt and is inserted into drying chamber, not only facilitate the installation of thermistor Rt, but also conveniently to drying Indoor temperature is detected.

As shown in Fig. 2, thermistor Rt and resistance R7 constitutes bleeder circuit, and when drying indoor temperature rising, heat The resistance value of quick resistance Rt reduces, and the tie point voltage between resistance R7 decreases；On the contrary, when the indoor temperature of drying During decline, the resistance value of thermistor Rt increases, and the tie point voltage between resistance R7 rises therewith.Wherein capacitance C2 rises steady The effect of press filtration ripple, resistance R6 are current-limiting resistance.

Comparing section 12 is coupled to temperature detecting part 11 to receive temperature signal, and the value of temperature signal and a reference value is carried out Compare rear output temperature and detect signal to execution unit.As shown in Fig. 2, comparing section 12 is comparator U, the reverse phase of comparator U is defeated Enter the tie point that end is coupled to resistance R6 and capacitance C2, output terminal output temperature detects signal to execution unit.

As shown in Fig. 2, comparing section 12 is also coupled to be useful for the adjustment portion 16 for adjusting a reference value.Adjustment portion 16 includes can power transformation The a ends of resistance R1, variable resistor R3 and capacitance C1, variable resistor R1 are coupled to a ends that voltage V1, b ends are coupled to variable resistor R3； The tie point of the b ends ground connection of variable resistor R3, variable resistor R1 and variable resistor R3 are coupled to the in-phase input end of comparator U.

Variable resistor R1 and R3 together constitutes bleeder circuit, can be adjusted between the two by the resistance value for adjusting R1 and R3 Tie point voltage, which acts on the in-phase input end of comparator U as the benchmark threshold voltage of temperature detecting unit, right Should be in the indoor maximum permissible temperature of drying, and voltage value is higher, corresponding maximum permissible temperature is lower.

The both ends of capacitance C1 are respectively coupled to the both ends of variable resistor R3, and capacitance C1 plays pressure stabilization function, makes variable resistor R3 When being adjusted, the voltage change at both ends can be more smooth.

As shown in Fig. 2, the output terminal of comparing section 12 is also coupled to be useful for improving benchmark threshold voltage to reduce highest permission temperature The feedback section 15 of degree.Feedback section 15 includes variable resistor R2 and diode D1, and the anode of diode D1 is coupled to the defeated of comparator U Outlet, cathode are coupled to a ends of variable resistor R2, and the b ends of variable resistor R2 are coupled to the in-phase input end of comparator U.

Positive feedback loop is formd by diode D1 and variable resistor R2, when comparator U exports high level, by just Backfeed loop will export Signal averaging to the in-phase input end of comparator U, raise the voltage of in-phase input end；Wherein diode D1 plays one-way conduction, prevents voltage V1 from pouring in down a chimney the output terminal to comparator U by positive feedback loop；It can power transformation by adjusting The resistance value of resistance R2 can change the size of current for being flowed into comparator U in-phase input ends, so as to adjust the value of positive and negative feedthrough voltage.

As shown in Fig. 2, execution unit includes being coupled to the delay portion 13 of temperature detecting unit and is coupled to delay portion 13 Enforcement division 14, delay portion 13 is in response to temperature detection signal with the current supply circuit of delay cutoff power source 9.

As shown in Fig. 2, delay portion 13 includes the time relay KT of power cut off delay type, the triode Q2 of NPN type and afterflow Diode D3, one end of the coil of time relay KT are coupled to voltage V6, and the other end is coupled to the collector of triode Q2, and three The base stage of pole pipe Q2 is coupled to the output terminal of comparator U to receive temperature detection signal, emitter ground connection, sustained diode 3 with The coil inverse parallel of time relay KT.

As shown in Fig. 2, the instantaneous make delay that enforcement division 14 is time relay KT disconnects normally opened contact KT-1, series connection In the current supply circuit of power source 9.

As shown in figure 3, whether comparing section 12 has been also coupled in response to temperature detection signal indicate power source 9 in work The indicating member 17 of state, indicating member 17 be light-emitting alarm, the triode Q1 including Light-emitting diode LED and NPN type, The anode of Light-emitting diode LED is coupled to voltage V3, and cathode is coupled to the collector of triode Q1, the base stage coupling of triode Q1 In the output terminal of comparator U, emitter ground connection.

Specific work process is as follows：

In use, chamber door 3 is in closure state to drying baker, so that the movable limit hole 7 in mobile limited block 5 is just The good fixation limit hole 6 on fixed limited block 4 is connected.

When temperature inside drying chamber is normal, the resistance value of thermistor Rt is higher, makes the electricity of comparator U inverting inputs Pressure is more than the voltage of its in-phase input end, the low level temperature detection signal of at this moment comparator U outputs to triode Q1 and Q2 Base stage makes triode Q1 and Q2 all end, and the coil of time relay KT is in power failure state, and corresponding instantaneous closure is prolonged When disconnect normally opened contact KT-1 and be off, to cut off the current supply circuit of power source 9, gag lever post 8 is not inserted into fixed and limits Between position hole 6 and movable limit hole 7 so that chamber door 3 can be opened, while Light-emitting diode LED does not shine.

When drying indoor temperature rise, the resistance value for being arranged at the thermistor Rt inside drying chamber reduces therewith, makes The voltage for acting on the inverting input on comparator U reduces；When temperature is more than maximum permissible temperature, the reverse phase of comparator U Input terminal voltage is just less than the voltage of its in-phase input end, makes the temperature detection signal of comparator U output high level to three poles The base stage of pipe Q1 and Q2 make triode Q1 and Q2 all turn on, and the coil of time relay KT is closed therewith, corresponding instantaneous Make delay disconnects normally opened contact KT-1 and is closed at once, turns on the current supply circuit of power source 9, power source 9 is made to work, to drive limit Position bar 8 is inserted into fixed limit hole 6 in movable limit hole 7, one is locked in mobile limited block 5 so as to fix limited block 4 It rises, so that chamber door 3 can not be opened, while Light-emitting diode LED shines and prompted.

The output terminal of comparator U raises the voltage of in-phase input end by feedback section 15 simultaneously, so that in drying chamber The recovery temperature in portion is less than original maximum permissible temperature, and recovery temperature can be adjusted by the resistance value for adjusting variable resistor R2 Just.

After drying baker is out of service, the temperature inside drying chamber is begun to decline, and the resistance value of thermistor Rt increases therewith, So that the anti-phase input terminal voltage of comparator U constantly raises, when temperature drops to less than the recovery of original maximum permissible temperature During temperature, the anti-phase input terminal voltage of comparator U could be more than the voltage of its in-phase input end again, make comparator U defeated again Go out low level temperature detection signal to the base stage of triode Q1 and Q2, end triode Q1 and Q2, time relay KT's Coil losing electricity resets, and initially enters time status, if within the time cycle of setting, dries indoor constant temperature less than recovery Temperature, the then instantaneous make delay of time relay KT disconnect normally opened contact KT-1 and just disconnect, and the power supply of cut-out power source 9 is returned Road resets the transmission shaft of power source 9, and gag lever post 8 is extracted out of fixed limit hole 6 and movable limit hole 7, solid to release Locking between fixing limit block 4 and mobile limited block 5 so that chamber door 3 can be opened.Meanwhile Light-emitting diode LED is cut It is disconnected, and then stop shining.

Claims (8)

1. a kind of drying baker including baking oven (1), the drying chamber being arranged on baking oven (1) and is covered on the opening of drying chamber simultaneously The chamber door (3) being articulated on baking oven (1), it is characterized in that：The side wall of the baking oven (1) is equipped in the overthe openings position of drying chamber Fixed limited block (4), the upper edge of the chamber door (3), which is equipped with, to be upwardly extended and positioned at the activity limit of fixed limited block (4) one side Position block (5) offers fixed limit hole (6) on the fixed limited block (4), offered on the mobile limited block (5) with it is solid The movable limit hole (7) that fixing limit hole (6) is connected, the interior sliding of the fixed limit hole (6), which is equipped with, is plugged in activity /V The gag lever post (8) in hole (7), the side wall of the baking oven (1) are additionally provided with positioned at the one side of fixed limited block (4) to drive gag lever post (8) the flexible power source (9) of sliding；

It further includes and is arranged in drying chamber and exports temperature for whether the indoor temperature of detection drying to be more than maximum permissible temperature The temperature detecting unit of degree detection signal is coupled to temperature detecting unit to receive temperature detection signal and in response to temperature detection The execution unit of signal, the temperature detecting unit have an a reference value, and a reference value corresponds to maximum permissible temperature；

When temperature detecting unit detects that the indoor temperature of drying is more than maximum permissible temperature, the execution unit controls power Source (9) works, to drive in the fixed limit hole (6) of gag lever post (8) insertion and movable limit hole (7)；Conversely, execution unit is cut off Power source (9), so that power source (9) driving gag lever post (8) extraction activity limit hole (7) and fixed limit hole (6).

2. drying baker according to claim 1, it is characterized in that：The temperature detecting unit include temperature detecting part (11) and For providing the comparing section of a reference value (12)；The temperature detecting part (11) dries indoor temperature change to export for detection Temperature signal；The comparing section (12) is coupled to temperature detecting part (11) to receive temperature signal, and by the value of temperature signal with A reference value is compared rear output temperature and detects signal to execution unit.

3. drying baker according to claim 1, it is characterized in that：The execution unit includes being coupled to temperature detecting unit Delay portion (13) and the enforcement division (14) for being coupled to delay portion (13), the delay portion (13) is in response to temperature detection signal to prolong When cut off power source (9) current supply circuit.

4. drying baker according to claim 2, it is characterized in that：The output terminal of the comparing section (12) is also coupled to be useful for carrying High benchmark threshold voltage is to reduce the feedback section of maximum permissible temperature (15).

5. drying baker according to claim 2, it is characterized in that：The comparing section (12) is also coupled to be useful for adjusting a reference value Adjustment portion (16).

6. drying baker according to claim 2, it is characterized in that：The comparing section (12) has been also coupled in response to temperature detection Signal is to indicate the whether in running order indicating member (17) of power source (9).

7. drying baker according to claim 6, it is characterized in that：The indicating member (17) is light-emitting alarm.

8. drying baker according to any one of claims 1 to 7, it is characterized in that：The power source (9) be cylinder, the gas The transmission shaft of cylinder is fixedly connected with gag lever post (8), and the cylinder drives gag lever post (8) to stretch into line slip by transmission shaft.