CN106472617A - A kind of circulating air oven - Google Patents
A kind of circulating air oven Download PDFInfo
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- CN106472617A CN106472617A CN201510547425.9A CN201510547425A CN106472617A CN 106472617 A CN106472617 A CN 106472617A CN 201510547425 A CN201510547425 A CN 201510547425A CN 106472617 A CN106472617 A CN 106472617A
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- air channel
- heat supply
- heater
- supply air
- burner hearth
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Abstract
The invention belongs to firing equipment technical field, more particularly to a kind of circulating air oven, including heater, thermocirculator, control device, performs device, the heater is connected to thermocirculator, control device is electrically connected to heater, the control device is electrically connected to performs device, solves the problems, such as that heating efficiency is low, unreasonable structure, applicable elements are high, with efficiency high, Advantageous Effects rational in infrastructure, applied widely.
Description
Technical field
The invention belongs to firing equipment technical field, more particularly to a kind of circulating air oven.
Background technology
Gas hot-air circulation oven also known as heated-air circulation oven, for baking have chemically gas and food processing to be baked, interior
Thermal cycle, baking object are heated evenly, and can be directly translated into heat energy when its heating object absorbs, so as to obtain rapid draing
Effect.Be widely used in again industrial or agricultural, medical treatment defend, plastics machinery, electronics, motor, communication, plating, plastics, five aurification
The accurate baking of work, instrument, printing, pharmacy, PC plate, powder, impregnation, spraying, glass, woodenware building materials etc., baking
Dry, tempering, preheating, sizing, processing etc.；And the Laboratory Instruments of universities and colleges and scientific research department, at present with the improvement of technology
Innovation has carried out continuous upgrading, more focuses on energy saving and the security of product, and the energy-conserving and environment-protective that is promoted using national Economic and Trade Commission's emphasis are added
Hot new technology, reaches and shortens the production cycle, energy saving, and the purpose such as improve product quality is easy to use, effect is significant, is one
Planting preferably has the roasting plant of bright prospects.
At present, it is heated whether laying for goods is excessively intensive in domestic understanding heated-air circulation oven, whether hi-temp hi-effective filter blocks up
Plug, whether air-flow plate is altered, and after excluding these reasons, then judges that circulating fan, with the presence or absence of fault, causes hot blast to follow
Ring air circulation is bad, and damp-heat air is unable to normal discharge, secondly analyzes from the circuit theory of phenomenon of the failure and baking oven, baking oven energy
Enough heating, illustrate that GCD-23A type intelligent computer temperature controller output signal is normal, and PLC input/output signal is also normal,
Through above-mentioned accident analysis, can be concluded that control signal and adjusting part all normal, then checked from the following aspects,
Achievement in research is even more very few.
There is some problem following in existing gas hot-air circulation baking：(1) GCD-23A type intelligent computer temperature control is checked
The PID regulation parameter of instrument, sees whether artificial maloperation, causes arrange parameter to change, so that there is remarkable action in system,
Pid parameter directly affects the degree of regulation of system, is the core content of Control System Design, by appropriate pid parameter,
PID control can be according to the error characteristics of system controlled process, and proportion of utilization, integration, difference gauge calculate system control amount, obtain
Response characteristic is exported to corresponding, control system reaches satisfied control effect.Recover the normal arranges value of pid parameter.Its
Whether whether the operating of secondary detection circulating fan is normal, turn to correct.If blower fan reversion or fans load are too big and rotating speed is excessively slow,
To all affect hot air circulation not smooth.When blower fan is inverted, any for the power supply of blower fan two-phase can be switched；When rotation speed of fan is excessively slow
When, should be checked in terms of two：(1) electrically whether aspect supply voltage is normal, has or not phase shortage or winding breaking phenomena.
Mechanical aspects have or not sweeps the faults such as thorax, vibration, bearing running hot, damage, fan blade loosening wiping case shell.Can be in light of the circumstances
Excluded.Detection solid-state relay and heater whether local open circuit again, solid-state relay (SOLIDSTATERELAYS),
Write a Chinese character in simplified form into ' SSR ", it is a kind of new noncontacting switch device being all made up of solid state electrical components, it utilizes electronic component (such as
The semiconductor devices such as switch triode, bidirectional triode thyristor) switching characteristic, can reach contactless no-spark ground make-and-break contact
Purpose, be therefore otherwise known as " noncontacting switch ".SSR successfully achieves weak signal (Vsr) to forceful electric power (output end load electricity
Pressure) control.Local open circuit after SSR virtual connection or conducting causes 380V power phase shortage, and heater all can not be heated, and processes
Method is to keep in repair or change solid-state relay.And the local open circuit of heater, so that heating all can not be worked, cause heating
Process is excessively slow.Heater is changed in maintenance.Failure problems are handled well completely.Closed circulation baking oven air switch, according to
The operational manual of the baking oven runs its program, and after the intensification of 2.5h, baking oven reaches design temperature, and the time relay starts
Timing, baking oven enter the insulated sterilizing stage of intermittent heat.After insulation 1h, baking oven begins to cool down cooling, entirely dries after 2.3h
Sterilising cycle program end of run, the technical parameter for fully meeting baking oven offer require to require with technological parameter.
Content of the invention
The present invention provides a kind of circulating air oven, to solve to propose a kind of circulating air oven in above-mentioned background technology, solution
The problem that heating efficiency of having determined is low, unreasonable structure, applicable elements are high.
Technical problem solved by the invention is employed the following technical solutions to realize：A kind of circulating air oven, it is characterised in that
Including heater, thermocirculator, control device, performs device, the thermocirculator include burner hearth, heat supply air channel,
Loop air channel, the heat supply air channel include main heat supply air channel, the first heat supply air channel, the second heat supply air channel, the loop air channel bag
The first loop air channel, second servo loop air channel, tertiary circuit air channel is included, the main heat supply air channel is arranged at roof of the furnace, described
One heat supply air channel is arranged at burner hearth inner top, and the second heat supply air channel is arranged at burner hearth inner bottom part, the first heat supply air channel with
Second heat supply air channel connects, and first loop air channel, second servo loop air channel, tertiary circuit air channel are distributed in roof of the furnace,
And connect with burner hearth, the heater is connected to thermocirculator, and control device is electrically connected to heater, the control
Device is electrically connected to performs device, and the heat supply air channel is connected to combustion chamber and is connected with combustor exit, the loop air channel
It is connected to combustion chamber and connects with entry of combustion chamber, the combustor exit connects through main heat supply air channel and through the first heat supply
Air channel, the first heat supply air channel through connection and through the second heat supply air channel, the second heat donor passage connect through burner hearth and through
First heat donor passage, the burner hearth connect through the first loop air channel and through entry of combustion chamber, and the burner hearth is through second servo loop wind
Road connects and through entry of combustion chamber, and the burner hearth connects through tertiary circuit air channel and through entry of combustion chamber.
Further, the heater includes heater, solid-state relay, combustion chamber, the control device include control cabinet,
Controller, PID regulator, the performs device include ratio valve module, circulating pump, temperature controller, and ratio valve module includes line
Property motor, butterfly valve, the heater are arranged at thermocirculator top, and the solid-state relay is connected with heater and arranges
In burning interior, the controller and PID regulator are arranged in control cabinet, and the butterfly valve is arranged at linear motor apex rotor,
The controller is electrically connected to heater through solid-state relay, and the PID regulator is built-in and is electrically connected to controller, the temperature
Control instrument via controller is electrically connected to PID regulator, and the PID regulator via controller is electrically connected to ratio valve module, described
PID regulator is electrically connected to circulating pump through via controller, and the linear motor of the butterfly valve is electrically connected to controller.
Further, the temperature controller includes GCD-23A type intelligent computer temperature controller, and the heater is gas combustion machine, institute
State gas combustion machine gases used for combustion gas..
Further, the burner hearth also includes hood, the hood hollow structure, and the hood is by angle steel, corrosion resistant plate and cold
Steel plate is made.
Further, the hood inner surface setting has heat-insulation layer, and the heat-insulation layer is filled by high density aluminium silicate wool.
Beneficial effects of the present invention are：
1st, this patent produces heat in adopting and being worked by gas combustion machine, divides upper and lower two-way that hot blast is uniform by blower fan through air channel
It is delivered in burner hearth, the heat in burner hearth is withdrawn into combustion chamber through air channel, then is delivered in burner hearth through blower fan, circulates successively, temperature
The height of degree is automatically controlled by butterfly valve by ratiomotor after being set, reach temperature required food is baked, Neng Gou
When processing to be baked, interior thermal cycle, baking object are heated evenly, and can be directly translated into heat energy when its heating object absorbs,
So as to obtain flash drying effect.
2nd, this patent produces heat due to employing by the work of gas combustion machine, divides upper and lower two-way by hot blast by blower fan through air channel
Uniformly it is delivered in burner hearth, the heat in burner hearth is withdrawn into combustion chamber through air channel, then is delivered in burner hearth through blower fan, follows successively
Ring, the height of temperature are automatically controlled by butterfly valve by ratiomotor after being set, with intelligentized Advantageous Effects.
3rd, this patent has two kinds using heated-air circulation oven Duct design：Horizontal blast and vertical ventilation, having with homogeneous heating
Beneficial technique effect.
4th, this patent is using being made up of angle steel, sheet metal by drying box body.Filled glass fiber insulation between shell and operating room.
The top of heating system device busy room.This type drying baker equipped with air blast can effectively avoid the gradient temperature existed in operating room
Difference and temperature overshot phenomenon, and the indoor temperature homogeneity of work, the excellent feature of Practical Performance can be improved.
5th, this type drying box adopts the temperature digital display controller with P, I, D control mode, adapted temperature-sensitive element probe composition
Automatic constant-temperature controls.Temperature-controlled precision is sensitive, and choosing temperature aspect, normal temperature select to set to 250 DEG C, arbitrarily.Work indoor temperature can
Directly to read from instrument.
6th, say on the whole, in baking oven interior circulation, the thermal efficiency is high for this patent hot blast, and energy saving is acted on using forced ventilation,
Air channel is provided with baking oven, and dry materials are uniform, baking oven smooth running.Temperature automatically controlled, convenient to install and maintain, applied widely,
Various materials can be dry, is preferable general drying equipment, the temperature of heated-air circulation oven, the scope of heated-air circulation oven application
Very extensively, various industrial materials can be dry, be general drying equipment, general heated-air circulation oven temperature range be room temperature～
+ 250 DEG C, high temperature modification is room temperature～+500 DEG C.
7th, timing controlled：Timing range (0S～99.9H), can require to select control mode (start meter according to Client Work
When or constant temperature timing), automatically cut off heating after reaching setting time, during setting, directly can stir toggle switch on the control panel,
Wherein code element：(S second M divide H hour).
Description of the drawings
Fig. 1 is the structure chart of the present invention；
Fig. 2 is the electrical schematic diagram of the present invention；
Fig. 3 is the hood structure chart of the present invention.
Specific embodiment
The present invention is described further below in conjunction with accompanying drawing：
In figure：1- heater, 2- thermocirculator, 3- control device, 4- performs device, 5- burner hearth, 6- heat supply air channel,
7- loop air channel, the main heat supply air channel of 8-, the first heat supply of 9- air channel, the second heat supply of 10- air channel, the first loop of 11- air channel, 12-
Secondary circuit air channel, 13- tertiary circuit air channel, 14- heater, 15- solid-state relay, 16- combustion chamber, 17- control cabinet, 18-
Controller, 19-PID adjuster, 20- ratio valve module, 21- circulating pump, 22- temperature controller, 23- linear motor, 24- butterfly valve,
25- hood, 26- gas combustion machine, 27- heat-insulation layer.
Embodiment：
The present embodiment：As shown in Figure 1, Figure 2, Figure 3 shows, 1, a kind of circulating air oven, it is characterised in that including heating
Device 1, thermocirculator 2, control device 3, performs device 4, the thermocirculator 2 include burner hearth 5, heat supply air channel
6th, loop air channel 7, the heat supply air channel 6 include main heat supply air channel 8, the first heat supply air channel 9, the second heat supply air channel 10, institute
Stating loop air channel 7 includes the first loop air channel 11, second servo loop air channel 12, tertiary circuit air channel 13, the main heat supply air channel
8 are arranged at 5 top of burner hearth, and the first heat supply air channel 9 is arranged at 5 inner top of burner hearth, and the second heat supply air channel 10 is arranged
In 5 inner bottom part of burner hearth, the first heat supply air channel 9 is connected with the second heat supply air channel 10, first loop air channel 11,
Second servo loop air channel 12, tertiary circuit air channel 13 are distributed in 5 top of burner hearth, and connect with burner hearth 5, the heater
1 is connected to thermocirculator 2, and control device 3 is electrically connected to heater 1, and the control device 3 is electrically connected to performs device
4, the heat supply air channel 6 is connected to combustion chamber 16 and is connected with the outlet of combustion chamber 16, and the loop air channel 7 is connected to combustion
Burn room 16 simultaneously to connect with 16 entrance of combustion chamber, the combustion chamber 16 exports and connects through main heat supply air channel 8 and through first
Heat supply air channel 9, through connection and through the second heat supply air channel 10, the second heat donor passage is through burner hearth 5 in the first heat supply air channel 9
Connect and through the first heat donor passage, the burner hearth 5 connects through the first loop air channel 11 and through 16 entrance of combustion chamber,
The burner hearth 5 connects through second servo loop air channel 12 and through 16 entrance of combustion chamber, the burner hearth 5 is through tertiary circuit air channel 13
Connect and through 16 entrance of combustion chamber, the heater 1 includes heater 14, solid-state relay 15, combustion chamber 16,
The control device 3 includes control cabinet 17, controller 18, PID regulator 19, and the performs device 4 includes ratio valve group
Part 20, circulating pump 21, temperature controller 22, ratio valve module 20 include linear motor 23, butterfly valve 24, the heater 1
2 top of thermocirculator is arranged at, the solid-state relay 15 is connected with heater 14 and is arranged in combustion chamber 16, institute
State controller 18 and PID regulator 19 is arranged in control cabinet 17, the butterfly valve 24 is arranged at 23 rotor top of linear motor
End, the controller 18 are electrically connected to heater 14 through solid-state relay 15, and the PID regulator 19 is built-in and electrically connects
In controller 18,22 via controller 18 of the temperature controller is electrically connected to PID regulator 19,19 warp of the PID regulator
Controller 18 is electrically connected to ratio valve module 20, and the PID regulator 19 is electrically connected to circulating pump 21 through via controller 18,
24 linear motor 23 of the butterfly valve is electrically connected to controller 18.
The temperature controller 22 includes GCD-23A type intelligent computer temperature controller 22, and the heater 14 is gas combustion machine 26,
The gas combustion machine 26 is gases used for combustion gas..
The burner hearth 5 also includes hood 25,25 hollow structure of the hood, the hood 25 by angle steel, corrosion resistant plate and
Cold steel plate is made.
25 inner surface setting of the hood has heat-insulation layer 27, and the heat-insulation layer 27 is filled by high density aluminium silicate wool.
Operation principle：When processing to be baked, interior thermal cycle, baking object are heated evenly, can be straight when its heating object absorbs
Switch through and be changed into heat energy, so as to obtain flash drying effect.Heat is produced in being worked by gas combustion machine, divided through air channel by blower fan
Two-way is uniformly delivered to hot blast in burner hearth up and down, and the heat in burner hearth is withdrawn into combustion chamber through air channel, then is delivered to through blower fan
In burner hearth, circulate successively, the height of temperature is automatically controlled by butterfly valve by ratiomotor after being set.Reach temperature required
The operation principle that food is baked.
The present invention use it is noted that item：Closed circulation baking oven air switch, sets heating according to the operational manual of the baking oven
250 DEG C of temperature, 260 DEG C of overtemperature alarm temperature, after insulation timing 1h, start its automatic running program, the circulated air of baking oven
The indicator lamps such as machine, air inlet fan, dish valve, heating are lighted in order, show program normal operation.After heating operation 2.5h, temperature
Degree is still reached to less than setting value, if the heat time is long, it is frangible to will result in heated glass container, and bad bottle rate is raised.With
When, energy waste is caused, power consumption increases.And the work period of baking oven lengthens, and causes the double shift in normal production station
Under be not timely completed the process procedure, the schedule of dangerous production task by mistake, and improve production cost.Temperature during normal trunkful
Degree is always heated to 250 DEG C from room temperature and needs 2.5h, and 1 work period needs about 6h, baking oven, drying box service manual,
With before must notice supply voltage used and can meet.With when, it is necessary to by electric outlet ground line by rule off-ground.
When energising is used, never touched the electrical equipment local of case leftward space or wiped with wet cloth with hand and smear and rinsed with water, should during inspection
By dump.
Power line can not be wrapped in metal object, not may be provided at the central authorities of low temperature or moistening, it is to avoid ageing of rubber causes electric leakage.
In placing box, article was sure not to squeeze, it is necessary to reserve the space of atmosphere natural convection, so that moistening atmosphere is slowed down on wind top effusion.
Answer the silver contact of current introspection temperature conditioner can be scared or uneven, if any after being sand flat contact with crocus cloth, then transporting
With, and usually should be cleaned with clean cloth, it is brought into contact with excellent (notice and must cut off the electricity supply).The metal tube of indoor temperature conditioner
Road is sure not to clash into so as not to affecting flexibility ratio.
In the uninteresting case Wu explosion-proof installation, inflammable articles please don't be put into.
After being finished every time, power supply partial cutoff must usually be adhered to clean inside and outside case.Clean end of a period hangs corresponding mark.In detail
See baking oven, drying box service manual two
Explosive inflammable volatile article is sure not to be put in uninteresting case, so as not to incurring blast.
Sample shelf uniform load should not surmount 20kg.
Placing articles are unable on shelf between sample room and heating chamber, so as not to affecting heat exchange.
With before must reflect on oneself nickel reeling have or not stacking, short circuit part.
Burner on light does not work, and cause commonly has three：Bulb is broken, bulb loose contact, heats scrappy going wrong.
The keeping fit and protection of the uninteresting case of electric heating：Heater switch is opened, is not heated.Cause commonly has four：Nickel filament open circuit, switch
With circuit sealing-off, temperature control knob refers in zero-bit (turn temperature control knob is to assigned temperature scale), relay protection.
Temperature grasps failure, and cause commonly has three：Temperature-sensing probe protects (change thermistor), relay protection, temperature control zero
Broken miscellaneous part defect (measuring defect place with universal meter, repair according to feelings).
Baking oven, drying box service manual three：
There must be special messenger to serve as with the instrument, equipment deployment is ended and exterior power supply should be cut off, exempt the outbreak of accident accident.
When placing test product in task room, it is impossible to too close, so as not to affecting the general activity of task indoor air flow, palpus between each article
Have 10～20mm gap, and symmetrically placed, the article on every layer of shelf is placed and will be interweaved, the interval of bottom shelf with appoint
Interval more than 100mm must be arranged at business room bottom.
Equipment surrounding should stay must space, be easy to equipment radiating and manipulate and protect.
Point, sharp thing is avoided to scratch equipment.
Another (portion) part of electric elements and equipment please don't be at will dismounted, and circuit is electrically grasped so as not to protection, formed the artificial of equipment
Defect and affect its function.
When storing, using equipment, surrounding is spiritual nothing inflammable, explosive and corrosivity.
Brigadier is not inflammable, explosive and volatilization article is put in this equipment and stops uninteresting disposal.
Behind PLEASE READ CAREFULLY island Korea Spro's instrument and equipment correlation " product description " before equipment, then stop every manipulation.
The most common failure analysis of heated-air circulation oven：Whether excessively intensive understand heated laying for goods in heated-air circulation oven, high
Whether warm high efficiency particulate air filter blocks, and whether air-flow plate is altered, and after excluding these reasons, then judges whether circulating fan is deposited
In fault, cause that hot air circulation air circulation is bad, damp-heat air is unable to normal discharge.Secondly from phenomenon of the failure and the electricity of baking oven
Road principle analysis, baking oven can be heated, and illustrate that GCD-23A type intelligent computer temperature controller output signal is normal, and PLC is defeated
Enter output signal also normal.Through above-mentioned accident analysis, can be concluded that control signal and adjusting part all normal, then from
Under several aspects checked.
The PID regulation parameter of GCD-23A type intelligent computer temperature controller is checked, whether artificial maloperation is seen, causes setting
Parameter modification, so that there is remarkable action in system.Pid parameter directly affects the degree of regulation of system, is control system
The core content of design.By appropriate pid parameter, PID control can be utilized according to the error characteristics of system controlled process
Ratio, integration, difference gauge calculate system control amount, are exported response characteristic accordingly, and control system reaches satisfied
Control effect.Recover the normal arranges value of pid parameter.Whether secondly whether the operating of detection circulating fan is normal, turn to correct.
If blower fan reversion or fans load are too big and rotating speed is excessively slow, will all affect hot air circulation not smooth.When blower fan is inverted, can be by
Any two-phase of the power supply of blower fan is switched；When rotation speed of fan is excessively slow, should be checked in terms of two：(1) electric aspect power supply
Whether voltage is normal, has or not phase shortage or winding breaking phenomena.
Mechanical aspects have or not sweeps the faults such as thorax, vibration, bearing running hot, damage, fan blade loosening wiping case shell.Concrete feelings can be directed to
Condition is excluded.Detection solid-state relay and heater whether local open circuit again.Solid-state relay
(SOLIDSTATERELAYS), write a Chinese character in simplified form into ' SSR ", be a kind of be all made up of solid state electrical components new contactless
Switching device, it are can reach using the switching characteristic of electronic component (the such as semiconductor devices such as switch triode, bidirectional triode thyristor)
The purpose of contactless no-spark ground make-and-break contact, be therefore otherwise known as " noncontacting switch ".SSR is successfully achieved
Control of the weak signal (Vsr) to forceful electric power (output end load voltage).Local open circuit after SSR virtual connection or conducting causes 380V power supply
Phase shortage, heater all can not be heated, and processing method is to keep in repair or change solid-state relay.And the local open circuit of heater,
Heating will be made all can not to work, cause heating process excessively slow.Heater is changed in maintenance.Failure problems are processed completely
Good.Closed circulation baking oven air switch, runs its program according to the operational manual of the baking oven, after the intensification of 2.5h,
Baking oven reaches design temperature, and the time relay starts timing, and baking oven enters the insulated sterilizing stage of intermittent heat.After insulation 1h
Baking oven begins to cool down cooling, whole dry sterilization cycle program end of run after 2.3h, fully meets the technology that the baking oven is provided
Parameter request and technological parameter are required.
The present invention is alleviated labour intensity, divides upper and lower two-way by hot blast by blower fan through air channel also with more labour is saved
Uniformly it is delivered in burner hearth, the heat in burner hearth is withdrawn into combustion chamber through air channel, then is delivered in burner hearth through blower fan, using wind
Machine circulation air supply mode is circulated successively, and wind cycle balance is efficient.Wind regime is driven by air supply motor (adopting noncontacting switch) is circulated
Wind wheel is via heater, and hot blast is sent, then via air channel to baking oven interior room, then by using after air suction air channel become
Wind regime recirculation, heating are used.Guarantee indoor temperature uniformity.When causing temperature value to occur to swing because of switch gate action,
The rapid recovery operation state of the air-supply circulatory system, until it reaches set temperature value, the height of temperature are led to by ratiomotor after being set
Cross butterfly valve to automatically control.Reach the temperature required operation principle that food is baked.And easy to operate, simple structure,
The efficiency of lifting processing.
Using technical scheme, or those skilled in the art is under the inspiration of technical solution of the present invention, designs similar
Technical scheme, and above-mentioned technique effect is reached, all fall into protection scope of the present invention.
Claims (5)
1. a kind of circulating air oven，It is characterized in that，Including heater、Thermocirculator、Control device、Performs device，The thermocirculator includes burner hearth、Heat supply air channel、Loop air channel，The heat supply air channel includes main heat supply air channel、First heat supply air channel、Second heat supply air channel，The loop air channel includes the first loop air channel、Second servo loop air channel、Tertiary circuit air channel，The main heat supply air channel is arranged at roof of the furnace，The first heat supply air channel is arranged at burner hearth inner top，The second heat supply air channel is arranged at burner hearth inner bottom part，The first heat supply air channel is connected with the second heat supply air channel，First loop air channel、Second servo loop air channel、Tertiary circuit air channel is distributed in roof of the furnace，And connect with burner hearth，The heater is connected to thermocirculator，Control device is electrically connected to heater，The control device is electrically connected to performs device，The heat supply air channel is connected to combustion chamber and is connected with combustor exit，The loop air channel is connected to combustion chamber and is connected with entry of combustion chamber，The combustor exit connects through main heat supply air channel and through the first heat supply air channel，The first heat supply air channel is through connection and through the second heat supply air channel，Second heat donor passage connects through burner hearth and through the first heat donor passage，The burner hearth connects through the first loop air channel and through entry of combustion chamber，The burner hearth connects through second servo loop air channel and through entry of combustion chamber，The burner hearth connects through tertiary circuit air channel and through entry of combustion chamber.
2. a kind of circulating air oven according to claim 1，It is characterized in that，The heater includes heater、Solid-state relay、Combustion chamber，The control device includes control cabinet、Controller、PID regulator，The performs device includes ratio valve module、Circulating pump、Temperature controller，Ratio valve module includes linear motor、Butterfly valve，The heater is arranged at thermocirculator top，The solid-state relay is connected and is arranged at burning interior with heater，The controller and PID regulator are arranged in control cabinet，The butterfly valve is arranged at linear motor apex rotor，The controller is electrically connected to heater through solid-state relay，The PID regulator is built-in and is electrically connected to controller，The temperature controller via controller is electrically connected to PID regulator，The PID regulator via controller is electrically connected to ratio valve module，The PID regulator is electrically connected to circulating pump through via controller，The linear motor of the butterfly valve is electrically connected to controller.
3. a kind of circulating air oven according to claim 2, it is characterised in that the temperature controller includes GCD-23A type intelligent computer temperature controller, the heater are gas combustion machine, and the gas combustion machine is gases used for combustion gas.
4. a kind of circulating air oven according to claim 1, it is characterised in that the burner hearth also includes hood, and the hood hollow structure, the hood are made up of angle steel, corrosion resistant plate and cold steel plate.
5. a kind of circulating air oven according to claim 4, it is characterised in that the hood inner surface setting has heat-insulation layer, and the heat-insulation layer is filled by high density aluminium silicate wool.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052500A (en) * | 2017-03-29 | 2017-08-18 | 金华市禾牧真空电子有限公司 | The control system of vacuum brazing furnace |
| CN110731355A (en) * | 2019-10-12 | 2020-01-31 | 王菲 | tunnel type food oven with hot air circulation |
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| CN201938285U (en) * | 2010-11-11 | 2011-08-24 | 莫少民 | Movable secondary heat-collecting food oven with double heat sources |
| CN102072618A (en) * | 2010-12-30 | 2011-05-25 | 东莞市冠辉五金有限公司 | Automatic temperature keeping method of electric oven and electric oven implementing same |
| CN203167907U (en) * | 2011-12-28 | 2013-09-04 | 上海勤辉食品机械有限公司 | Baking equipment |
| CN103875746A (en) * | 2014-03-27 | 2014-06-25 | 广州浩雅机械设备有限公司 | Tunnel type hot air circulation tunnel furnace |
| CN203788988U (en) * | 2014-05-08 | 2014-08-27 | 泗水得力食品机械有限公司 | Multi-channel recycling device |
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| CN107052500A (en) * | 2017-03-29 | 2017-08-18 | 金华市禾牧真空电子有限公司 | The control system of vacuum brazing furnace |
| CN110731355A (en) * | 2019-10-12 | 2020-01-31 | 王菲 | tunnel type food oven with hot air circulation |
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Effective date of registration: 20171121 Address after: 200000 2067 rooms, No. 52, Wang Min Road, Fengxian District, Shanghai Applicant after: Shanghai Kui Hong Machinery Manufacturing Co., Ltd. Address before: 201417 Fengxian District Pu Wei Road, Shanghai, No. 6157 Applicant before: SHANGHAI QINHUI FOODSTUFF MACHINE CO., LTD. |
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Application publication date: 20170308 |