CN101701420B - Gas dryer ignition control device and method - Google Patents
Gas dryer ignition control device and method Download PDFInfo
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- CN101701420B CN101701420B CN2009102086311A CN200910208631A CN101701420B CN 101701420 B CN101701420 B CN 101701420B CN 2009102086311 A CN2009102086311 A CN 2009102086311A CN 200910208631 A CN200910208631 A CN 200910208631A CN 101701420 B CN101701420 B CN 101701420B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
- D06F58/263—Gas heating equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
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- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Control Of Combustion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
This invention relates to a gas dryer ignition control device and method, specifically to a gas dryer ignition control device and method which only opens the gas valve when the voltage that makes the ignition apparatus stably ignites is supplied, and detects the flame of the ignition apparatus, cuts off the power supply when the power supply is unstable, so that the leakage of unburned gas can be prevented to ensure the security.
Description
Technical field
The present invention relates to the ignition control device and the method for gas dryer, specifically, only supplying with open gas valve under the voltage condition that can make the igniter stable ignition, and the flame of test point firearm, when the supply power unsure state, will cut off the electricity supply, can prevent that thus not burned gas from leaking, and guarantee the ignition control device and the method for the gas dryer of security.
Background technology
In general, device for clothing processing includes washing machine, cloth drying machine, and has the washing and the washing machine of drying function etc. simultaneously.Cloth drying machine or have in the washing machine of drying function and be provided with heat-generating device, and the clothing that holds to the inside of device for clothing processing in drying course is supplied with heat.
In above-mentioned device for clothing processing, the washings of finishing the state that washing and dehydration finish is rendered to the cylinder inside of device for clothing processing, to cylinder internal feed hot blast, thus the moisture of evaporation washings and dry washings.Above-mentioned heat-generating device is favourable to produce the electric heater of the resistance heat of high temperature with resistance, and burning gases and generate the gas burner etc. of the combustion heat.The heat of above-mentioned generation will enter into the inside of cylinder, and dry the clothing that its inside holds.
Below, with reference to the accompanying drawings, the ignition control device of gas dryer of the prior art is described.
As shown in Figure 1, in the valve actuator of the gas dryer of prior art, control part 10 is exported the burning commencing signal that is used for to dryer internal feed temperature wind according to user's operational order to first relay 20, according to above-mentioned burning commencing signal, opening was converted to closed condition when above-mentioned first relay 20 will be from normality, and to igniter 30 supply powers.
Above-mentioned igniter 30 supplies to power supply from above-mentioned first relay 20, and the fuel ignition that gas and air are mixed.First sensor 41 is in closed condition when normality, still, when detecting the spark of above-mentioned igniter 30, will be converted to opening.Thermostat 42 is in closed condition when normality, still, when detecting superheat state, will be converted to opening, and prevent overheated.
50 pairs of rectification part intermediate node and the power supply supplied with of above-mentioned first sensor 41 and the overheated intermediate node that prevents thermostat 42 by above-mentioned first relay 20 and igniter 30 carries out rectification, and supplies to first valve 61 and second valve 62.
In order to send the output of above-mentioned first sensor 41 to above-mentioned control part 10 and second valve 62 respectively with the state of no electric noise, between above-mentioned control part 10 and above-mentioned first sensor 41, and be connected with photoelectrical coupler 43,44 between above-mentioned photoelectrical coupler 43 and above-mentioned first valve 61.
Include with lower member in second switch unit 70: the moving coil 71 that is connected in series with above-mentioned first valve 61; One end is connected with above-mentioned first sensor 41, the contact 72 that the other end is connected with the intermediate node of above-mentioned first sensor 41 and thermostat 42.
In above-mentioned existing gas type cloth drying machine, can't driven in the low igniter that makes of the voltage of supplying with, and under thus can't situation with the gas igniting, will take place that gas leaks and gas burst etc. constitutes influence to user's safety.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of ignition control device and method of gas dryer, it is characterized in that, only supplying with open gas valve under the voltage condition that can make the igniter stable ignition, and the flame of test point firearm, when the supply power unsure state, will cut off the electricity supply, can prevent that thus not burned gas from leaking.
For achieving the above object, the present invention is achieved by the following technical solutions:
The ignition control device of gas dryer, it is characterized in that including with lower member: an end supplies to the igniter of power supply and ignition gas by first switch unit; One end is connected with the other end of above-mentioned igniter, and the other end is connected with power supply, and controls the power supply supply passageway of above-mentioned igniter, detects the state of above-mentioned igniter and the detecting unit of output detection signal simultaneously; According to the power supply of supplying with by above-mentioned first switch unit and above-mentioned detecting unit, the valve unit that control is supplied with to the fuel of above-mentioned igniter; With above-mentioned valve unit interlock, and under fired state the power supply supply passageway of the above-mentioned valve unit of control, make the second open switch unit of above-mentioned valve unit; Be connected between above-mentioned valve unit and the ground connection, and the ignition voltage stabilisation unit that above-mentioned valve unit is opened when ignition voltage is above; Analyze above-mentioned detection signal, when judging that above-mentioned power supply is above-mentioned ignition voltage when following, controls the control part of the opening of above-mentioned first switch unit.
The ignition control device of aforesaid gas dryer, it is characterized in that including in the described detecting unit with lower member: open when detecting the flame of above-mentioned igniter, and cut off the supply power of above-mentioned igniter and the flame detection sensor of short circuit behind predefined effluxion; Open when the temperature owing to gas combustion rises, and cut off the power supply of supplying with to above-mentioned valve unit, and the hot detecting sensor of short circuit behind above-mentioned predefined effluxion.
The ignition control device of aforesaid gas dryer, it is characterized in that including in the described valve unit with lower member: when the above-mentioned first switch unit short circuit, supply to power supply and open, when above-mentioned flame detection sensor was open, power supply was cut off and the first open valve; After above-mentioned first valve is open, second valve of opening according to above-mentioned flame detection signal.
The ignition control device of aforesaid gas dryer is characterized in that including with lower member in the described ignition voltage stabilisation unit: be connected in first voltage stabilizer between above-mentioned second valve and above-mentioned second switch unit; Be connected in parallel in second voltage stabilizer of above-mentioned second switch unit.
The ignition control device of aforesaid gas dryer is characterized in that also including in the described ignition voltage stabilisation unit: the capacitor that is connected in parallel with above-mentioned second voltage stabilizer.
The ignition control device of aforesaid gas dryer is characterized in that including with lower member in described second switch unit: the moving coil that is connected in series with above-mentioned first valve; One end is connected with above-mentioned flame detection sensor, and the other end is connected with above-mentioned moving coil, with the short circuit of the open interlock of above-mentioned first valve, and with the contact of the opening of closing interlock of above-mentioned first valve.
The ignition control method of gas dryer of the present invention, a plurality of switching device shifters, flame detection sensor and hot detecting sensor and first and second gas valve of it is characterized in that being provided with igniter in the described gas dryer, controlling the power supply supply passageway of above-mentioned igniter, it includes following steps: the first step that detects the size of service voltage according to operation signal; When above-mentioned detected voltage is reference voltage when above, open above-mentioned first gas valve behind above-mentioned igniter supply power, is judged opening whether second step of above-mentioned flame detection sensor; When being judged as above-mentioned flame detection sensor when open, open above-mentioned second gas valve, the third step that when above-mentioned flame detection sensor keeps open, begins to light a fire.
The ignition control method of aforesaid gas dryer, it is characterized in that in described second step, when above-mentioned detected voltage is in the reference voltage time, will close above-mentioned igniter and above-mentioned first and second gas valve, and carry out aforesaid each step again.
The ignition control method of aforesaid gas dryer is characterized in that in the described third step, when being judged as above-mentioned flame detection sensor short circuit, will closing above-mentioned second gas valve, and carry out aforesaid each step again.
The ignition control method of aforesaid gas dryer, it is characterized in that in the described third step, when and short circuit open repeatedly at the above-mentioned flame detection sensor in the open back of above-mentioned second gas valve, to open above-mentioned switching device shifter and close above-mentioned first and second gas valve, and to the external prompt loss of ignition.
The invention has the beneficial effects as follows: according to the ignition control device and the method for the gas dryer in one embodiment of the invention, only supplying with open gas valve under the voltage condition that can make the igniter stable ignition, and the flame of test point firearm, when the supply power unsure state, will cut off the electricity supply, can prevent that thus not burned gas from leaking, and guarantee security.
Description of drawings
Fig. 1 is the circuit diagram of the ignition control device of gas dryer of the prior art;
Fig. 2 is the stereogram that adopts the gas dryer of the embodiment among the present invention;
Fig. 3 is the side cross-sectional view that skeleton diagram illustrates the gas dryer among Fig. 2 of internal structure;
Fig. 4 is the circuit diagram of the ignition control device of the gas dryer in one embodiment of the invention;
Fig. 5 is the flow chart of the ignition control method of the gas dryer in one embodiment of the invention;
Fig. 6 adopts in the gas dryer of the present invention and the relevant fired state figure of voltage that supplies with;
Fig. 7 is the schematic diagram that adopts the caloric value of igniter relevant with service voltage in the gas dryer of the present invention;
Fig. 8 and Fig. 9 are the schematic diagrames that illustrates the voltage at the voltage at the first switch unit two ends of the prior art and the first switch unit two ends among the present invention respectively.
The specific embodiment
Below, with reference to the accompanying drawings, structure in one embodiment of the invention and effect are described in detail.
Fig. 2 is the stereogram that adopts the cloth drying machine of the embodiment among the present invention; Fig. 3 is the side cross-sectional view that skeleton diagram illustrates the above-mentioned cloth drying machine of the internal structure of seeing from the lateral section of the dryer of Fig. 2.
With reference to Fig. 2 and Fig. 3, the body 110 that includes the profile of constituent apparatus in the above-mentioned dryer 100, be formed with in the front of above-mentioned body 110 and be used for rendering to the dispensing port 112 of the inside of body 110 as the clothing of oven dry object, above-mentioned dispensing port 112 is opened and closed by door 111.And, at the upside of above-mentioned dispensing port 112 guidance panel 116 being installed, aforesaid operations panel 116 is provided with the various operated keys that are used to operate above-mentioned dryer.In addition, be provided with lower member in the inside of above-mentioned body 110: the rotatable cylinder 120 that is communicated in the rear side of dispensing port 112; Be used for warm-air supply portion 140 to cylinder 120 internal feed hot-airs; Be used for heat exchanger 150 that the air of discharging from cylinder 120 is dehumidified.
In the front of above-mentioned body 110 door 111 that is used for clothing is rendered to cylinder 120 is installed, the post leg 113 that is used for supporting body 110 is installed at its downside.And, be equipped with lower member in the inside of above-mentioned body 110: the conveyer belt 131 that is used for swing roller 120; Be installed in the circulation air path 114, and the air in dryer provides the fan 133 of air-supply power; Be used for providing the motor 135 of driving force to above-mentioned conveyer belt 131 and fan 133.
Wherein, it is a plurality of that motor 135 is constituted, and provide driving force to conveyer belt 131 and fan 133 respectively.In addition, filter (not shown) is installed in circulation air path 114, above-mentioned filter is used for filtering from foreign material such as high temperature broken end how wet air contain that cylinder 120 is discharged or fine hair.
Above-mentioned cylinder 120 is to be provided with the cylindrical shell that can throw in as the inner space of the clothing etc. of oven dry thing, and portion is equipped with a plurality of lifting devices 121 that can promote clothing within it.
Include with lower member in the above-mentioned warm-air supply portion 140: be used to supply with and the gas valve (not shown) of sever supply gas; The gas that to discharge from the above-mentioned gas valve is put the gas burner 143 of the generation hot blast of fighting with after the outside air that provides mixes; For the warm-air supply that will generate to cylinder 120, be used to connect the warm-air supply air channel 145 of gas burner 143 and cylinder 120; Be used for detecting the hot blast temperature sensor 147 of the temperature of the hot blast that cylinder 120 enters.
In above-mentioned warm-air supply portion 140, for the flame detection electric current, and judge the generating capacity of carbon monoxide indirectly by the numerical value of above-mentioned flame current, prolong to the corner location of flame flame rod is installed.
By judge the generating capacity of carbon monoxide by the flame current of above-mentioned flame rod detection, at this, when the generating capacity of carbon monoxide is increased to harmful degree, will cut off the supply of gas, and the warning tones that sounds.
Above-mentioned gas burner 143 is connected with the above-mentioned gas valve, will be behind the gas and extraneous air mixing and burning of the discharge of above-mentioned gas valve, the heat that utilizes generate this moment adds hot-air, heats thus and the hot blast that generates will be provided in the cylinder 120 by warm-air supply air channel 145.
In addition, above-mentioned hot blast temperature sensor 147 is installed on the connecting portion 145a of warm-air supply air channel 145 and cylinder 120.Certainly, hot blast temperature sensor 147 can use a plurality of as required, and, also can be installed in the warm-air supply air channel 145.
In the temperature value that detects by above-mentioned hot blast temperature sensor 147, when the air quantity of the air of dryer internal flow reduces, for example, in owing to filter, fill in the situation about flowing that foreign material such as cotton-wool, fine hair cause blocking air, the mobile situation about having some setbacks that causes air owing to the oven dry thing in the cylinder too much, block owing to the air channel that is connected with the outside under the situation of the air quantity minimizing that causes in the dryer, the temperature of leaked-in air will exceed the proper temperature value in the cylinder 120, and the oven dry thing will be sustained damage.
In order to prevent the generation of above-mentioned situation, warm-air supply portion 140 will regulate the above-mentioned gas valve according to the air quantity of air, with the amount of gas supplied in the adjustments of gas burner 143.That is, when air quantity reduces and when causing hot blast temperature sensor 147 detected temperature values to exceed the proper temperature value, will close part or all of above-mentioned gas valve, and reduce or cut off the amount of the gas that flows into to gas burner 143.For this reason, as the above-mentioned gas valve preferably use can sensitive adjustments of gas emitted dose solenoid valve or electronic expansion valve).
Fig. 4 is the circuit diagram of the ignition control device of the gas dryer among the present invention; Fig. 5 is the flow chart of control method of the igniter of the gas dryer among the present invention.
As shown in Figure 4, according to the control device of the gas dryer among the present invention, it includes with lower member: an end supplies to the igniter 230 of power supply and ignition gas by first switch unit 220; One end is connected with the other end of above-mentioned igniter, and the other end is connected with power supply, and detects the flame of above-mentioned igniter and the detecting unit 240 of heat; Supply to the rectification part 250 of power supply by above-mentioned first switch unit and above-mentioned detecting unit; According to the power supply of supplying with by above-mentioned rectification part, the valve unit 260 that control is supplied with to the fuel of above-mentioned igniter; One end is connected with above-mentioned valve unit, second switch unit 270 that the other end is connected with above-mentioned detecting unit; Be connected between above-mentioned valve unit and the ground connection, and when ignition voltage is above, make the open ignition voltage stabilisation unit 280,290 of above-mentioned valve unit; Analyze above-mentioned detection signal, and judging that above-mentioned power supply is above-mentioned ignition voltage when following, the control part 210 of opening that will above-mentioned first switch unit of control.
Include with lower member in the above-mentioned detecting unit 240: the flame detection sensor 241 that an end is connected with above-mentioned igniter; One end is connected with the other end of above-mentioned flame detection sensor, the hot detecting sensor 242 that the other end is connected with power supply.
In the present embodiment, as above-mentioned hot detecting sensor 242, will use thermostat.As above-mentioned first switch unit, the relay of controlling according to the control signal of above-mentioned control part 210 will be used.
Above-mentioned valve unit 260 controls are to the supply passageway of above-mentioned igniter supply gas, and it includes with lower member: an end is connected with above-mentioned rectification part, first valve 261 that the other end is connected with above-mentioned second switch unit; One end is connected with above-mentioned flame detection sensor, second valve 262 that the other end is connected with above-mentioned rectification part.Wherein, above-mentioned first and second valve 261,262 electronics valve of supplying to power supply and driving such as solenoid valve preferably.
And, for the open state with above-mentioned flame detection sensor is prompted to above-mentioned control part and above-mentioned second valve, preferably, first photoelectrical coupler 243 is connected between above-mentioned flame detection sensor and the control part, and second photoelectrical coupler 244 is connected between above-mentioned first photoelectrical coupler and above-mentioned second valve.
Include with lower member in the above-mentioned ignition voltage stabilisation unit 280,290: be connected in first voltage stabilizer 280 between above-mentioned first valve and above-mentioned second switch unit; Second voltage stabilizer 290 that is connected in parallel with above-mentioned second switch unit.
In the present embodiment, as above-mentioned first and second voltage stabilizer 280,290, two different respectively first and second avalanche diodes of voltage are born in use.In the case, in above-mentioned second voltage stabilizer, preferably be connected in parallel to capacitor 291.
Include with lower member in above-mentioned second switch unit 270: the moving coil 271 that is connected in series with above-mentioned first valve; One end is connected with above-mentioned detecting unit, the contact 272 that the other end is connected with above-mentioned moving coil.
Below, will the ignition control device 200 of the gas dryer among the present invention be described in more detail.
At first, as follows according to the original state of the said elements before user's the dryer operating instruction supply power.
Above-mentioned first relay 220 is in open state, and above-mentioned first and second detecting sensor 241,242 is in closed condition, and above-mentioned first and second valve 261,262 is in closed condition, and the contact 272 of above-mentioned second switch unit is in open state.
As user during to dryer input operating instruction, control part 210 is according to above-mentioned operating instruction, to make above-mentioned first relay 220 be converted to short-circuit condition from open state, motor 135 will supply to power supply and drive, above-mentioned igniter 230 supplies to power supply and obtains heating, meanwhile, first valve 261 will supply to power supply and open by rectification part 250.
At this moment, flame detection sensor 241 and hot detecting sensor 242 will keep short-circuit condition, above-mentioned second switch unit 270 will be with the time operation identical with first valve 261, promptly, when first valve 261 is opened, the contact 272 of above-mentioned second switch unit will be converted to short-circuit condition from open state, and when first valve 261 was closed, 272 of the contacts of above-mentioned second switch unit were converted to open state from short-circuit condition.
When above-mentioned igniter 230 begins to be heated to through 20 to 30 seconds, above-mentioned flame detection sensor 241 will detect the flame of above-mentioned igniter and be converted to open state, and the power supply supplied with in the cut-out point firearm 230 is closed.
In addition, along with above-mentioned igniter 230 ' cuts out ', the flame detection signal will supply to the control part 210 and second valve 262 by first and second photoelectrical coupler 243,244, make second valve 262 open thus, and supply with fuel and carry out normal burn operation.
Then, along with above-mentioned burn operation carries out given time, temperature will rise, to use the overheated thermostat that prevents as above-mentioned hot detecting sensor 242, owing to the reason on its temperature characterisitic, when the temperature of above-mentioned rising exceeds the characteristic value of above-mentioned thermostat, will be converted to opening from short-circuit condition.
Thus, power supply is supplied with and will be cut off, and first and second valve 261,262 will be opened and fuel shutoff is supplied with, and above-mentioned burn operation will be interrupted, second switch unit 270 also will with the open interlock of above-mentioned first valve 261 be converted to opening from short-circuit condition.
Then, interrupt along with burn operation and through given time and temperature when descending, above-mentioned thermostat 242 will be converted to short-circuit condition from open state again.But, owing to above-mentioned flame detection sensor 241 detects after flame is converted to open state, in order to be converted to short-circuit condition again, time (30 ~ 40 seconds) that need be longer than the heat time heating time (20 ~ 30 seconds) of above-mentioned igniter 230.Overheated prevent that thermostat 242 is converted to ' cutting out ' state after, will have about about 10 seconds time interval, above-mentioned flame detection sensor 241 will keep ' unlatching ' state with certain hour.
Because above-mentioned second switch unit 270 also will be held open state, rectification part 250 can't supply to power supply, and first and second valve 261,262 also can't supply to power supply and be held open state.
When passing through about about 10 seconds time, flame detection sensor 241 will be converted to short-circuit condition from open state, igniter 230 will supply to power supply and begin to heat, meanwhile, first valve 261 will supply to power supply and open from rectification part 250, and second switch unit 270 of interlock also will be converted to short-circuit condition with it.
When igniter 230 heats with certain hour, flame detection sensor 241 will detect the flame of above-mentioned igniter and be converted to open state, the flame detection signal will be exported to the control part 210 and second valve 262 by first and second photoelectrical coupler 243,244, thereby make 262 unlatchings of second valve and begin to carry out burn operation.
In the case, even flame detection sensor 241 is in open state, rectification part 250 also can arrive power supply by second switch unit, 270 normal supplies that are in short-circuit condition, thereby make first and second valve 261,262 keep open states.
As mentioned above, the fuel gas that igniter 230 is supplied with for first and second valve of normal combustion 261,262 supplies to supply voltage more than minimum about 86V with needs, when supply voltage is under the situation of 76 ~ 86V, the gas valve that also will open, and under the state of not lighted a fire gas jet.
When but above-mentioned ignition voltage stabilisation unit 280,290 only supplies to the supply voltage of normal combustion fuel gas in above-mentioned igniter 230, just it is opened to the above-mentioned first valve supply power.
To use only first and second avalanche diode of ability short circuit when the voltage that inserts is above as reference voltage as above-mentioned ignition voltage stabilisation unit 280,290, in the case, in above-mentioned second voltage stabilizer, preferably be connected in parallel to capacitor 291, thereby make the operating voltage of above-mentioned second switch unit keep stable.
In the present embodiment, be more than the 86V in order to supply with the stable required AC power commonly used of ignition voltage to above-mentioned igniter, DC voltage is 78V, this also is the rectification part voltage that rectification part 250 is supplied with in order to supply with stable ignition voltage to above-mentioned igniter.In the case, for to above-mentioned first and second valve supply power and the voltage of each required element is respectively, the second switch unit voltage of required 12V for the normal operation of moving coil 271 of above-mentioned second switch unit, and for the 261 normal operations of above-mentioned first valve first valve voltage of required minimum 50V.
Thus, second avalanche diode 292 of second voltage stabilizer that is connected in parallel with the moving coil 271 of above-mentioned second switch unit preferably has second avalanche voltage, in addition, first avalanche voltage of first avalanche diode that uses as above-mentioned first voltage stabilizer 280 should be 16V.
That is, because the voltage of supplying with from rectification part for above-mentioned igniter stable operation is 78V, formula (1) will be set up, and through type (1) can draw above-mentioned first avalanche voltage (Vz1).
Rectification part output voltage=first valve the voltage+first avalanche voltage+second avalanche voltage (formula 1)
Above-mentioned capacitor 291 is used for preventing chattering etc. taking place and unsettled operation can be supplied with stable voltage to above-mentioned moving coil in the electric wave rectified waveform that supplies to above-mentioned moving coil 271.
And the flame detection signal that above-mentioned control part 210 receives is when normal ignition, and flame detection sensor 241 will be opened and keep high level signal.
But, under the abnormal situation of above-mentioned igniting, flame detection sensor 241 will disappear heat and short circuit, thereby make above-mentioned second valve closing, in order to light a fire, above-mentioned igniter will heat again, and reattempt igniting when above-mentioned flame detection sensor 241 is open again.
Above-mentioned control part 210 will continue to receive repeatedly high level signal and low level signal from above-mentioned flame detection sensor 241.
Thus, when above-mentioned flame detection signal continues repeatedly high level signal and low level signal, above-mentioned control part 210 will be judged as can't normal ignition, and will close above-mentioned first and second valve, and open above-mentioned first switch unit and cutting off the electricity supply, in the case, above-mentioned control part 210 is preferably gone up at display part (not shown) and is shown loss of ignition.
Thus, in the ignition control device of gas dryer of the present invention, can be beyond above-mentioned igniter stable supplying ignition voltage by hardware mode, also can detect misfire and cut off the electricity supply by software mode.
With reference to Fig. 5, control method according to the gas dryer among the present invention, be provided with a plurality of switching device shifters, flame detection sensor and the hot detecting sensor of the power supply supply passageway of igniter, the above-mentioned igniter of control in the gas dryer of the present invention, and first and second gas valve, it includes following steps: the first step S10 that detects the size of service voltage according to run signal; When above-mentioned detected voltage is reference voltage when above, will open above-mentioned first gas valve, behind above-mentioned igniter supply power, judge the opening whether second step S50 of above-mentioned flame detection sensor; When being judged as above-mentioned flame detection sensor when open, will open above-mentioned second gas valve, and keep the third step S80 that begins to light a fire when open at above-mentioned flame detection sensor.
In above-mentioned second step, when above-mentioned detected voltage is in the reference voltage time, to close above-mentioned igniter and above-mentioned first and second gas valve S20, S21, in the case, can carry out repeatedly at above-mentioned certain hour through resupplying power supply later and confirming that whether supply voltage is the operation more than the reference voltage.
In above-mentioned third step, when being judged as above-mentioned flame detection sensor short circuit, to be judged as and in the above-mentioned igniter flame not take place and close the above-mentioned second gas valve S50, S51, in the case, can carry out repeatedly at above-mentioned certain hour through resupplying later power supply, making supply voltage is reference voltage when above, and open above-mentioned first valve is confirmed the operation whether above-mentioned flame detection sensor is opened behind the igniter supply power.
In above-mentioned third step, when above-mentioned second gas valve is opened the open repeatedly and short circuit of the above-mentioned flame detection sensor in back, will open above-mentioned switch unit and close above-mentioned first and second gas valve.
In the case, preferably in above-mentioned third step, when above-mentioned second gas valve is opened the open repeatedly and short circuit of the above-mentioned flame detection sensor in back, will be to external prompt loss of ignition S71.
Fig. 6 adopts in the gas dryer of the present invention and the relevant fired state figure of voltage that supplies with; Fig. 7 is the schematic diagram that illustrates the caloric value that adopts igniter relevant with the voltage of supplying with in the gas dryer of the present invention; Fig. 8 and Fig. 9 illustrate the schematic diagram of the voltage at the voltage at the existing first switch unit two ends and the first switch unit two ends among the present invention respectively.
With reference to Fig. 6, when line voltage is 78V when above, motor will begin to start, and normally drive when 96V is above, and still, above-mentioned igniter on-Line Voltage is can't light a fire under the situation between 78V and the 96V.
And, by diagram among Fig. 7 as can be known, on-Line Voltage is under the situation of 120V, 102V, 84V, only just can normally light a fire under the situation that exceeds the minimum caloric value datum line of lighting a fire of above-mentioned igniter for the energy line of opening above-mentioned flame detection sensor between each line.
Illustrate voltage among above-mentioned Fig. 8 and Fig. 9 respectively for moving coil 271 two ends of above-mentioned second switch unit among prior art and the present invention, by diagram as can be known, the voltage at moving coil 271 two ends of above-mentioned second switch unit among the present invention will be more stable than the voltage at moving coil 71 two ends of above-mentioned second switch unit of the prior art.
Above with reference to embodiment among the present invention and accompanying drawing, and be that example has been described in detail with gas type/exhaust cloth drying machine, but it is applicable in gas type/condensation type cloth drying machine etc., and, technical scope of the present invention is not to be defined in above embodiment and accompanying drawing, and technical scope of the present invention will be limited by the content of putting down in writing in the appending claims.
Claims (11)
1. the ignition control device of a gas dryer is characterized in that, it includes with lower member:
One end supplies to the igniter of source, Shen and ignition gas by first switch unit:
One end is connected with the other end of above-mentioned igniter, and the other end is connected with power supply, and controls the power supply supply passageway of above-mentioned igniter, detects the state of above-mentioned igniter and the detecting unit of output detection signal simultaneously;
According to the power supply of supplying with by above-mentioned first switch unit and above-mentioned detecting unit, the valve unit that control is supplied with to the fuel of above-mentioned igniter;
With above-mentioned valve unit interlock, and under fired state the power supply supply passageway of the above-mentioned valve unit of control, make the second open switch unit of above-mentioned valve unit;
Be connected between above-mentioned valve unit and the ground connection, and the ignition voltage stabilisation unit that above-mentioned valve unit is opened when ignition voltage is above;
Analyze above-mentioned detection signal, when judging that above-mentioned power supply is above-mentioned ignition voltage when following, controls the control part of the opening of above-mentioned first switch unit.
2. the ignition control device of gas dryer according to claim 1 is characterized in that comprising in the described detecting unit with lower member:
When detecting the flame of above-mentioned igniter, open, and cut off the supply power of above-mentioned igniter, and the flame detection sensor of short circuit behind predefined effluxion;
Open when the temperature owing to gas combustion rises, and cut off the power supply of supplying with to above-mentioned valve unit, and the hot detecting sensor of short circuit behind above-mentioned predefined effluxion.
3. the ignition control device of gas dryer according to claim 2, its feature includes in described valve unit with lower member:
When the above-mentioned first switch unit short circuit, supply to power supply and open, when above-mentioned flame detection sensor was open, power supply was cut off and the first open valve;
After above-mentioned first valve is open, second valve of opening according to above-mentioned flame detection signal.
4. the ignition control device of gas dryer according to claim 3 is characterized in that including with lower member in the described ignition voltage stabilisation unit:
Be connected in first voltage stabilizer between above-mentioned second valve and above-mentioned second switch unit;
Be connected in parallel in second voltage stabilizer of above-mentioned second switch unit.
5. the ignition control device of gas dryer according to claim 4, its feature also includes in described ignition voltage stabilisation unit:
The capacitor that is connected in parallel with above-mentioned second voltage stabilizer.
6. the ignition control device of gas dryer according to claim 4, its feature includes with lower member in described second switch unit:
The moving coil that is connected in series with above-mentioned first valve;
One end is connected with above-mentioned flame detection sensor, and the other end is connected with above-mentioned moving coil, with the short circuit of the open interlock of above-mentioned first valve, and with the contact of the opening of closing interlock of above-mentioned first valve.
7. the ignition control method of a gas dryer, a plurality of switching device shifters, flame detection sensor and hot detecting sensor and first and second gas valve of it is characterized in that being provided with igniter in the described gas dryer, controlling the power supply supply passageway of above-mentioned igniter, it includes following steps:
Detect the first step of the size of service voltage according to operation signal;
When above-mentioned detected voltage is reference voltage when above, open above-mentioned first gas valve behind above-mentioned igniter supply power, is judged opening whether second step of above-mentioned flame detection sensor;
When being judged as above-mentioned flame detection sensor when open, open above-mentioned second gas valve, the third step that when above-mentioned flame detection sensor keeps open, begins to light a fire.
8. the ignition control method of gas dryer according to claim 7, it is characterized in that in described second step, when above-mentioned detected voltage is in the reference voltage time, will close above-mentioned igniter and above-mentioned first and second gas valve, and enforcement of rights requires each step in 7 again.
9. the ignition control method of gas dryer according to claim 7 is characterized in that in the described third step, when being judged as above-mentioned flame detection sensor short circuit, will close above-mentioned second gas valve, and enforcement of rights requires each step in 7 again.
10. the ignition control method of gas dryer according to claim 7, it is characterized in that in the described third step, when and short circuit open repeatedly, will open above-mentioned a plurality of switching device shifter and close above-mentioned first and second gas valve at the above-mentioned flame detection sensor in the open back of above-mentioned second gas valve.
11. the ignition control method of gas dryer according to claim 10 is characterized in that in the described third step, when and short circuit open repeatedly at the above-mentioned flame detection sensor in the open back of above-mentioned second gas valve, and will be to the external prompt loss of ignition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090024163A KR101557356B1 (en) | 2009-03-20 | 2009-03-20 | Apparatus and method for controlling ignition of gas dryer |
| KR10-2009-0024163 | 2009-03-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101701420A CN101701420A (en) | 2010-05-05 |
| CN101701420B true CN101701420B (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102086311A Expired - Fee Related CN101701420B (en) | 2009-03-20 | 2009-10-19 | Gas dryer ignition control device and method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101557356B1 (en) |
| CN (1) | CN101701420B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593011A (en) * | 2016-10-27 | 2017-04-26 | 中海油能源发展股份有限公司 | Offshore platform and laundry room integrated system and installation method |
-
2009
- 2009-03-20 KR KR1020090024163A patent/KR101557356B1/en not_active IP Right Cessation
- 2009-10-19 CN CN2009102086311A patent/CN101701420B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR101557356B1 (en) | 2015-10-06 |
| CN101701420A (en) | 2010-05-05 |
| KR20100105238A (en) | 2010-09-29 |
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