CN1510371A - Combustion controller of drier - Google Patents
Combustion controller of drier Download PDFInfo
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- CN1510371A CN1510371A CNA021586411A CN02158641A CN1510371A CN 1510371 A CN1510371 A CN 1510371A CN A021586411 A CNA021586411 A CN A021586411A CN 02158641 A CN02158641 A CN 02158641A CN 1510371 A CN1510371 A CN 1510371A
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- flame
- control device
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Abstract
A combustion controller for baker is composed of the coil for controlling valve, igniter, temp-based on-off type bimetal sensor, constant-temp device, flame detector, and gas heating and supplying unit controlled by said flame detector. Only when the flame exists, the gas can be supplied, so saving fuel gas and preventing the explosion of the residual gas in pipeline.
Description
Technical field
The present invention relates to a kind of combustion control device of dryer, whether flame detection exists when particularly turning round about burning for heat energy is provided, thereby can carry out the combustion control device of the dryer of safe burning running.
Background technology
Fig. 1 and Fig. 2 have provided the structural representation of existing dryer.As seen from the figure, in the casing (not shown) of the outward appearance that forms dryer, be provided with cylinder 1.The both sides of cylinder 1 are open, formed the belt grooves 2 of twining the conveyer belt (not shown) that is driven by independent drive source along the outer cylinder of cylinder 1.Formed drying baker 5 in the inside of cylinder 1.A plurality of baffle plates 6 that when drying baker rotates, stir the thing that is dried have been formed in the inside of drying baker 5.
Head end and rear end at cylinder 1 respectively are provided with front end-plate 7 and back end plate 9.The main effect of front end-plate 7 and back end plate 9 is head end and rear ends of supporting drum 1.Simultaneously, between counterrotating front end-plate 7 and the cylinder 1, be provided with between back end plate 9 and the cylinder 1 and prevent the sealing gasket 8 that leaks.A plurality of roller bearings 9 (not shown) of supporting drum 1 are arranged on the correspondence position of the head end of cylinder 1 and rear end.
On front end-plate 7, formed the inside and outside through hole that communicates 8 that makes drying baker 5.Through hole 8 carries out optionally switch by the port lid (not shown).
Be provided with air supply line 12 on the end plate 9 in the back, and the main effect of air supply line 12 to be inside to drying baker 5 provide air, be the passage of supply hot blast more accurately, communicate with the inside of drying baker 5.
And, on the side of the lower end of the through hole 8 that is positioned at front end-plate 7, formed the spout assembly 13 of discharging the air of drying baker 5.On spout assembly 13, be provided with burlap filter 14.The main effect of burlap filter 14 is the effects of removing from the airborne impurity of drying baker 5 discharges.
With go out spout assembly 13 and link to each other and be provided with burlap pipeline 15, and burlap filter 14 is positioned at burlap pipeline 15.Linking to each other with burlap pipeline 15 is provided with air blast 17, by the air in the burlap pipeline 15 sucking-off drying bakers 5.Air blast 17 is arranged in the air blast frame 18.One side of air blast frame 18 links to each other with burlap pipeline 15, and opposite side links to each other with blast pipe 19.Thus, be discharged to outside by air blast 17 by blast pipe 19 from drying baker 5 output and the air by burlap pipeline 15.
Simultaneously, link to each other with air supply line 12 and be provided with hot air duct 20.Shown in the main effect of hot air duct 20 be to provide dry required hot blast to drying baker 5.For this reason, on hot air duct 20, also be provided with heat energy generation device.
That is, be provided with gas nozzle 22 in the porch of hot air duct 20, main effect is the combustion gas of spraying supply.On gas nozzle, be provided with the valve 25 of control gas flow.Symbol 23 expression Gas Pipe among the figure.
Valve 25 is by control structure control not shown in the figures, and main effect is given gas nozzle 22 with the gas supply in the Gas Pipe 23.
Extend inward at the inlet of hot air duct 20 and to be provided with the mixing tube 24 that combustion gas that gas nozzle 22 sprays and 1 air mix.Here, the inlet of mixing tube 24 and gas nozzle 22 is corresponding.From the combustion gas of gas nozzle 22 ejection and the extraneous air that flows into from the inlet of mixing tube 24, promptly 1 air is in the internal mix of mixing tube 24.Head end at mixing tube 24 is provided with spark plug 26, produces the required spark of igniting.
Below, the course of work of the dryer of the conventional art design that as above constitutes is described.
Drop into washings pass upper cover in the drying baker 5 of cylinder 1 inside after, the conveyer belts during by function key in the belt grooves 2 drive swing roller 1 by independent drive source.
Then, air blast 17 drives, by the air in the burlap pipeline 15 sucking-off drying bakers.At this moment, extraneous air enters in the drying baker by air supply line 12.
Temperature rises when passing through hot air duct 20 by air supply line 12 air supplied here.That is, combustion gas is ejected into mixing tube 24 inside by gas nozzle 22, and 1 air inlet by mixing tube 24 enters, and in the inside and the combustion gas mixing of mixing tube 24, afterwards by spark plug 26 igniting of mixing tube 24 outlets and burn.
The heat energy heating that fuel gas buring produced, the air that is drawn into hot air duct 20 by air blast 17 makes it become hot blast.
Hot blast enters in the drying baker 5 of cylinder 1 inside by air feed passage 12.Absorb the moisture of washing bag at the inside of drying baker 5 hot blast after, output to the outside of drying baker 5 by spout assembly 13.At this moment, the air in the drying baker 5 is exported by spout assembly 13 under the effect of the suction of air blast 17.And the air of exporting by spout assembly 13 passes through burlap filter 14, removes the foreign material that comprise.
Below, the combustion control device that produces the required heat energy of drying in the dryer is in the past described.
Fig. 3 represents the working state figure of combustion control device, and Fig. 4 represents the flameout state figure of combustion control device.
At first, combustion control device has been equipped with coil 266,269,278 for by-pass valve control 25.Because valve 25 is above valves of 2 ends of polyphone, so will be equipped with a plurality of valves.That is, when all coils all moved, combustion gas just can be passed through valve.
And combustion control device comprises that also the igniting initial stage produces the dynamo exploder 275 of flame and constitutes according to the sensor 272 (passing device as light) of the bimetal leaf type of temperature on/off.And, on combustion control device, also possessed thermostat 263.Sensor 272 and thermostat 263 are kept the on state when not having heat, and heater-driven converts the off state when reaching uniform temperature to.
And, resistance value ratio sensor 272 height of the coil 269 of last action in the coil of by-pass valve control 25.This is at first to be fed in the igniter 275 by sensor 272 for power supply supply initial stage electric current.
Combustion control device in the past with said structure is kept the on state at the action initial stage sensor 272 and the thermostat 263 that do not have heat, and the sensor 272 of electric current by the on state is fed to hot spot firearm 275 in the igniter 275.
The heat that produces during igniter 275 heating makes sensor 272 convert the off state to.The supply electric current can't be opened valve and be fed in the coil 266,269,278 of controlling burnt gas valve 25 by the sensor 272 of off state.By combustion gas, heating and continuous carrying out produced the required heat energy of dryer when valve 25 was opened.
Secondly, the dry release of dryer, in the time of stopping the driving of heater, the control device (not shown) cuts off the electric current valve-off 25 of each coil 266,269,278.At this moment the gas supply of closing mixing tube 24 by valve 25 also can stop.
Simultaneously, flame-out back is owing to the amount of residual heat will in the hot air duct 20, and sensor 272 is kept opening as shown in Figure 4.
Thus, the user imports the dry operating order or once more because the running of the mistake of control device in this state, during to combustion control device supply electric current, if electric current can't flow to by the sensor 272 of on state on the igniter 275, then can flow in the coil 266,269,278 of control burnt gas valve 25.
This situation be because the control device of control burning in the burning of the outlet side of not confirming mixing tube 24 whether under the normal situation, and the control gas supply causes.As a result, be the unnecessary combustion gas of supply under the abnormal situation of dry operating, not only waste combustion gas, and can't carry out normal dry operating.
That is, dryer is in the past supplied combustion gas under fireless state, has not only reduced the credit worthiness of product, but also user's safety is constituted a threat to.
And, under fireless state, during Open valve 25, can't carry out normal combustion by the combustion gas of gas nozzle 22 by Gas Pipe 23, thus a residue part.In mixing tube 24, under the state of a part of combustion gas of residue, have the danger of blast during spark plug 26 igniting.
Summary of the invention
Technical problem to be solved by this invention is, whether the existence that a kind of flame detection is provided can carry out the combustion control device of the dryer of safe combustion event.
The technical solution adopted in the present invention is: a kind of combustion control device of dryer, include the coil that is used for by-pass valve control and is provided with, dynamo exploder that the igniting initial stage produces flame and according to the sensor of the bimetal leaf type of temperature on/off, on combustion control device, also be provided with thermostat, also be provided with the flame detecting device whether flame detection exists, the heating fuel feeding mechanism that flame detecting device control drives in order to supply combustion fuel; When carrying out dry operating, if flame detecting device does not detect flame, the supply electric current of then enforceable cut-out heating fuel feeding mechanism.
The present invention has following effect:
The 1st: only supply combustion gas when producing flame, thus can prevent unnecessary gas supply.
The 2nd: only supply combustion gas when producing flame, thus can prevent residual combustion gas in mixing tube 24 and the hot air duct 20.Thus, when carrying out again dry operating, can avoid bringing sense of insecurity to the user because remaining combustion gas sets off an explosion.
Description of drawings
Fig. 1 represents the dryer primary structure exploded perspective view of prior art design.
Fig. 2 represents the structural plan figure of the dryer of prior art design with gas combustion apparatus.
Fig. 3 and Fig. 4 represent the movement state diagram of the combustion control device of prior art design.
Fig. 5 represents the structure chart of the dryer combustion control device that the present invention designs.
Fig. 6 is the flame detecting device schematic diagram.
Wherein:
22: gas nozzle 23: Gas Pipe
24: mixing tube 25: valve
26: spark plug 50: the flame test bar
54: flame detecting device 58: control part
56: burner 60: flame detection sensor
63,263: thermostat 66,69,78,266,269,278: coil
72,272: radiation sensor 75,275: igniter
The specific embodiment
Below, in conjunction with the accompanying drawings, the dryer burner that the present invention is designed is described in detail.
Fig. 5 represents the structure chart of the dryer combustion control device that the present invention designs.Be described in detail and see figures.1.and.2 for the structure of the dryer of the present invention design.
The operation principle of flame detection sensor 60 as shown in Figure 6, flame detection sensor 60 is when flame test bar 50 detects flame on the burner 56, just begins the switch sensor that moves.
The signal that is detected by flame test bar 50 passes to flame detecting device 54 by holding wire, and flame detecting device 54 becomes it into electric signal and is input in the control part 58.Thus, when flame test bar 50 detected flame, flame detection sensor 60 was kept the on state, and kept the off state when not detecting flame.
And the combustion control device of the present invention's design has been equipped with coil 66,69,78 for by-pass valve control 25.Because valve 25 is above valves of 2 ends of polyphone, so will be equipped with a plurality of valves.That is, when having only all coils all to move, combustion gas just can be passed through valve.
And combustion control device comprises that also the igniting initial stage produces the dynamo exploder 75 of flame and constitutes according to the sensor 72 (as luminescence sensor) of the bimetal leaf type of temperature on/off.And, on the other end of flame detection sensor 60, also possessed thermostat 63.Sensor 72 and thermostat 63 are kept the on state when not having heat, and heater-driven converts the off state when reaching uniform temperature to.
And, resistance value ratio sensor 72 height of the coil 69 of last action in the coil of by-pass valve control 25.This is at first to be fed in the igniter 75 by sensor 72 for power supply supply initial stage electric current.
Below, the course of work of the dryer of the present invention's design of as above constituting is described.
Drop into washings pass upper cover in the drying baker 5 of cylinder 1 inside after, during by function key, the conveyer belts in the belt grooves 2 drive swing roller 1 by independent drive source.
Then, air blast 17 drives, by the air in the burlap pipeline 15 sucking-off drying bakers.At this moment, extraneous air enters in the drying baker by air supply line 12.
Temperature rises when passing through hot air duct 20 by air supply line 12 air supplied here.That is, combustion gas is ejected into mixing tube 24 inside by gas nozzle 22, and 1 air inlet by mixing tube 24 enters, and forms flame in the inside and the combustion gas mixing of mixing tube 24.Then, burn by spark plug 26 igniting of mixing tube 24 outlets at first, keep flame by the combustion gas of supply afterwards.
During the current lead-through of combustion control device of the present invention, because keep the on state at the action initial stage sensor 72 and the thermostat 63 that do not have heat, so the sensor 72 of electric current by the on state be fed to hot spot firearm 75 in the igniter 75, finishes the initial stage igniting.
The heat that produces during igniter 75 heating makes sensor 72 convert the off state to.At this moment, the supply electric current can't be opened valve and be fed in the coil 66,69,78 of controlling burnt gas valve 25 by the sensor 72 of off state.By combustion gas, heating and continuous carrying out produced the required heat energy of dryer when valve 25 was opened.
The heat energy heating that fuel gas buring produced makes it become hot blast by the air that is drawn into hot air duct 20 of air blast 17.
Hot blast enters in the drying baker 5 of cylinder 1 inside by air feed passage 12.Absorb the moisture of washings at the inside of drying baker 5 hot blast after, output to the outside of drying baker 5 by spout assembly 13.At this moment, the air in the drying baker 5 is exported by spout assembly 13 under the effect of the suction of air blast 17.And the air of exporting by spout assembly 13 passes through burlap filter 14, removes the foreign material that comprise.
Utilize the heat energy that as above produces to carry out dry operating, and work as the dry release of dryer, in the time of stopping the driving of heater, control device cuts off the electric current valve-off 25 of each coil 66,69,78.At this moment the gas supply of closing mixing tube 24 by valve 25 also can stop.Then, finish normal dry operating.
Below, flame testing process shown in Figure 5 is described.
When carrying out dry operating, in the normal course of action, the outlet side of mixing tube 24 must will form flame.At this moment flame is mainly kept to the combustion gas of mixing tube 24 by combustion jet.
The valve of being opened by coil 66,69,78 25 makes gas supply in the Gas Pipe 23 in gas nozzle 22.At this moment, the combustion gas that is fed to gas nozzle 22 continues to be ejected into and keeps the flame that heat energy is provided in the mixing tube 24.
Detect by flame test bar 50 at the flame that goes out interruption-forming of mixing tube 24 like this, and the existence of judging flames by the flame detection sensor 60 of detection signal is whether, and flame when existing flame detection sensor 60 continue to keep the on state.Thus, by the flame detection sensor 60 of on state, electric current continues to be fed in the coil 66,69,78, makes the inside of fuel gas injection to mixing tube 24.That is, under the state that flame exists, flame detection sensor 60 continues the on state, therefore can not influence the generation of heat energy.
Below, the course of action that does not detect Fig. 5 of flame during to unusual running describes.
In the dry operating, because the flame of the outlet of external action or internal influence mixing tube 24 can extinguish.At this moment, the flame test bar 50 that is arranged on mixing tube 24 exits can detect less than flame.
Thus, do not give the control part signal that 58 output flames have extinguished from the flame detecting device 54 of flame test bar 50 received signals.Detect principle according to such flame, flame sensor 60 perception flames extinguish, and convert the off state to.
At this moment, be supplied to for Open valve 25 that electric current in each coil 66,69,78 is enforceable to be cut off valve-off 25 by flame sensor 60.During valve-off 25, the combustion gas that is fed to gas nozzle 22 by Gas Pipe 23 is cut off.
And, utilize independent control device to cut off the electric current of coil 66,69,78, when stopping working running (valve-off cuts off gas supply), the exit of mixing tube 24 can not produce flame.Thus, flame test bar 50 can not detect flame, and flame sensor 60 converts the off state to.
Simultaneously, because the amount of residual heat will on the hot air duct 20, radiation sensor 72 is kept the off state within a certain period of time.Thus, flame-out back radiation sensor 72 is kept in the certain hour section of off state, even to the combustion control device conducting electric current of the present invention's design, converts the flame detecting device 60 of off dress attitude to, and electric current can not be fed in the coil yet.
In the present invention, whether the existence of the direct flame detection of flame that produces from burner, the action of control gas supply valve.Thus, the present invention only when producing flame, produces the combustion gas of heat when dry operating is carried out in supply, thereby prevents the accident that unnecessary gas supply and unusual running cause.
Claims (4)
1. the combustion control device of a dryer, include the coil (66,69,78) that is used for by-pass valve control (25) and is provided with, dynamo exploder (75) that the igniting initial stage produces flame and according to the sensor (72) of the bimetal leaf type of temperature on/off, on combustion control device, also be provided with thermostat (63), it is characterized in that also being provided with the flame detecting device (54) whether flame detection exists, the heating fuel feeding mechanism that flame detecting device control drives in order to supply combustion fuel; When carrying out dry operating, if flame detecting device does not detect flame, the supply electric current of then enforceable cut-out heating fuel feeding mechanism.
2. the combustion control device of dryer according to claim 1 is characterized in that the heating fuel feeding mechanism plural valve of contacting constitutes, and life period is poor between the action between each valve.
3. the combustion control device of dryer according to claim 1 is characterized in that flame detecting device (54) is to be made of flame sensor (60).
4. the combustion control device of dryer according to claim 1 is characterized in that also comprising in parallel with the heating fuel feeding mechanism, and toggle speed constitutes faster than the igniter that the heating fuel feeding mechanism produces flame; Be in the sensor conducts of on state under the state by empty calory or cut off ignitor current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586411A CN100383334C (en) | 2002-12-25 | 2002-12-25 | Combustion controller of drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586411A CN100383334C (en) | 2002-12-25 | 2002-12-25 | Combustion controller of drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1510371A true CN1510371A (en) | 2004-07-07 |
| CN100383334C CN100383334C (en) | 2008-04-23 |
Family
ID=34237107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021586411A Expired - Fee Related CN100383334C (en) | 2002-12-25 | 2002-12-25 | Combustion controller of drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100383334C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712433A (en) * | 2014-01-02 | 2014-04-09 | 中联重科股份有限公司 | Dry-mixed mortar mixing plant and combustion control method and device of drying system of dry-mixed mortar mixing plant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0975598A (en) * | 1995-09-18 | 1997-03-25 | Matsushita Electric Ind Co Ltd | Gas-heating clothes drying machine |
| JPH119896A (en) * | 1997-06-26 | 1999-01-19 | Matsushita Electric Ind Co Ltd | Gas clothing drying machine |
| CN2479049Y (en) * | 2001-03-22 | 2002-02-27 | 广东万家乐燃气具有限公司 | Automatic clothes-drying detecting device for laundry drier |
-
2002
- 2002-12-25 CN CNB021586411A patent/CN100383334C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712433A (en) * | 2014-01-02 | 2014-04-09 | 中联重科股份有限公司 | Dry-mixed mortar mixing plant and combustion control method and device of drying system of dry-mixed mortar mixing plant |
| CN103712433B (en) * | 2014-01-02 | 2015-12-02 | 中联重科股份有限公司 | The method for controlling combustion of dry mortar mixing plant and drying system thereof, device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100383334C (en) | 2008-04-23 |
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