CN100375817C - Heater controller of drier - Google Patents
Heater controller of drier Download PDFInfo
- Publication number
- CN100375817C CN100375817C CNB021586500A CN02158650A CN100375817C CN 100375817 C CN100375817 C CN 100375817C CN B021586500 A CNB021586500 A CN B021586500A CN 02158650 A CN02158650 A CN 02158650A CN 100375817 C CN100375817 C CN 100375817C
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- Prior art keywords
- heater
- control device
- dryer
- opening degree
- air
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Abstract
The present invention discloses a heater controller of a drier, which comprises a heating fuel controller for controlling the supply of heating fuel, an adjuster for adjusting the opening degree of the heating fuel controller, and a cotnroller for controlling the opening degree of the heating fuel controller via the regulator and controlling the heating value of a heater via control signals. The present invention controls the heating value of the heater by adjusting the gas supply of the heater, so that the dryer can be always maintained at the controlled temperature so as to avoid the problem of long drying time existing in the prior art. Thus, the heater controller can shorten drying time and can also avoid the problem of a shortened product life caused by frequent ignition. Particularly, the heater controller can avoid the frequent switching of the heater between a dehumidifying region and an ending region in the drying process so as to shorten the drying time.
Description
Technical field
The present invention relates to a kind of heater control device of dryer, particularly relate to a kind of heater control device that can shorten the dryer of drying time.
Background technology
Fig. 1 is the dryer primary structure exploded perspective view of prior art.As shown in Figure 1, the casing inside of not shown formation dryer shell is provided with cylinder 1.Cylinder 1 is that horizontal direction is provided with, and two ends are open state, and its urceolus face middle part is formed with the transmission trough of belt 2 that can twine the not shown driving belt that is driven by other drive source.The inside of cylinder 1 forms the drying baker 5 that can dry.The inside of drying baker 5 is provided with a plurality of baffle plates 6 that the oven dry thing in the drying baker 5 can be overturn when cylinder 1 rotation.On the front-end and back-end of cylinder 1 respectively correspondence be provided with drive end bearing bracket 7 and rear end cap 9.Drive end bearing bracket 7 and rear end cap 9 have the effect of back-up roller 1 front-end and back-end.And, be provided with encapsulant 10 in order to prevent to reach the leakage between rear end cap 9 and the cylinder 1 between counterrotating drive end bearing bracket 7 and the cylinder 1.In addition, but on the relevant position, front-end and back-end of cylinder 1, also be provided with a plurality of roller bearings of not shown back-up roller 1.Offer on the drive end bearing bracket 7 and can be communicated with drying baker 5 outsides and inner through hole 8.Through hole 8 is to carry out selectivity with not shown door to open and close.Rear end cap 9 is provided with air supply pipe 12.Air supply pipe 12 can form the passage that hot blast to the inner supply of drying baker 5 air, especially is provided, the internal communication of itself and drying baker 5.Through hole 8 lower ends of drive end bearing bracket 7 are equipped with can be from the spout assembly 13 of drying baker 5 vent the air overboards.Be provided with lint filter 14 in the spout assembly 13.But 14 filterings of lint filter from the air that drying baker 5 discharges, mix such as foreign matters such as line bits or dusts.Be provided with soft gauze pipe 15 with spout assembly 13 to be communicated with form, lint filter 14 is in the inside of soft gauze pipe 15.Be provided with pressure fan 17 with soft gauze pipe 15 with connected mode.Pressure fan 17 can be extracted the air of drying baker 5 inside out by soft gauze pipe 15, and it is arranged on the inside of pressure fan frame 18.One side of pressure fan frame 18 is communicated with soft gauze pipe 15, and opposite side is connected with blast pipe 19.From drying baker 5, discharge and discharge to the outside by blast pipe 19 by pressure fan 17 through the air of soft gauze pipe 15.Link to each other with air supply pipe 12 and be provided with warm-air pipe 20.The inside that warm-air pipe 20 can be drying baker 5 provides the hot blast of drying, and is provided with in it can add hot-air to produce the device of heat energy.That is, inlet being provided with at warm-air pipe 20 can be provided with the valve that can control gas supply with the jet for gas 22 of coal gas ejection in it.To extend inward from the coal gas of gas pipe 23 and ejection from jet for gas 22 and the mixing tube 24 that mixes of the primary air inlet from warm-air pipe 20, the inlet of mixing tube 24 is corresponding with the position of jet for gas 22.In the inside of mixing tube 24, the extraneous air of the coal gas of jet for gas 22 ejection and inlet inflow by mixing tube 24, be that primary air mixes.The front end of mixing tube 24 is provided with the spark plug 26 that can light a fire.Here above-mentioned all devices that can produce heat energy are called heater.After putting into clothing to be dried in the drying baker 5 of user in cylinder 1 and shutting up the door carefully, the push button, the driving belt that is wrapped in this moment on the transmission trough of belt 2 is rotated cylinder 1 under other drive source drives.Pressure fan 17 can be extracted the air in the drying baker 5 out when being rotated by soft gauze pipe 15, extraneous air then flows into by the inside of air supply pipe 12 to drying baker 5.Reach high relatively temperature when at this moment, the air of process air supply pipe 12 is by warm-air pipe 20.Coal gas by jet for gas 22 mixes with primary air in the porch of mixing tube 24 when the internal spray of mixing tube 24, is lighted by spark plug 26 in the exit of mixing tube 24 then.The heat that produces in the gas-fired process is drawn into the inside of warm-air pipe 20 and forms hot blast by pressure fan 17, and hot blast enters in the drying baker 5 in the cylinder 1 by air supply pipe 12 more then.Discharge by spout assembly 13 after entering the moisture that contains in the hot blast absorption clothing of drying baker 5 inside.Discharging air by spout assembly 13 from drying baker 5 also is the effect of leaning on pressure fan 17.And the air of discharging by spout assembly 13 can filter out dust or line bits during through lint filter 14.
Fig. 2 is the dryer parts pie graph of prior art.As shown in Figure 2, the dryer of prior art is the device that carries out drying operation under the control of microcomputer 100.Dryer inside be provided with each drive division of being subjected to circuit control and can with the signal that detects to microcomputer 100 outputs or from microcomputer 100 each sensor of received signal.Be to be provided with the key input part 103 that power supply signal, drying operation signal and the drying condition signal etc. based on user's input command can be transmitted to microcomputer 100 in the dryer; The electrode sensor signal conversion part 106 that the detecting signal that detects the electrode sensor of present clothing oven dry degree can be transmitted to microcomputer 100; The first temperature sensor signal converter section 109 that the detecting signal that detects first temperature sensor of cylinder 1 inner hot blast temperature can be changed the back and transmitted to microcomputer 100; Can be with the detecting signal conversion back of the hot blast temperature of discharge from cylinder 1 and the second temperature sensor signal converter section 112 that transmits to microcomputer 100; Can be with the door test section 115 that prevents in the drying course that the detecting signal of opening from transmitting to microcomputer 100; Can produce the rotary drum electrical motor drive division 118 that can make the driving force that cylinder 1 is rotated; Can under the control of microcomputer 100, produce the pressure fan Motor Drive portion 121 that can make the driving force that pressure fan 17 is rotated; With under the control of microcomputer 100, can produce the heater-driven portion 124 that the heater-driven of thermal source power can be provided.When put in the drying baker 5 of user in cylinder 1 treat drying clothes and shut up the door carefully after, press the action button on the key input part 103, at this moment microcomputer 100 is at first discerned the execution sequence of drying operation, begin head roll Motor Drive portion 118 then, the driving belt that is wrapped on the transmission trough of belt 2 then is rotated cylinder 1 with rotary drum electrical motor drive division 118 under other drive source drives.Microcomputer 100 applies control signal to drive the pressure fan motor in pressure fan Motor Drive portion 121 subsequently.Pressure fan 17 begins rotation under the control of pressure fan motor, and the air in the drying baker 5 is extracted out by soft gauze pipe 15, and extraneous air then flows into by the inside of air supply pipe 12 to drying baker 5.At this moment, microcomputer 100 begins to drive heater-driven portion 124, and reaches high relatively temperature when making air through air supply pipe 12 by warm-air pipe 20.In fact microcomputer 100 is igniting actions of controlling spark plug 26 by the method for the gas supply valve in the control jet for gas 22.When coal gas is lighted by spark plug 26 when the inside of mixing tube 24 sprays by jet for gas 22.The heat that produces in the gas-fired process is drawn into the inside of warm-air pipe 20 and forms hot blast by pressure fan 17, and hot blast enters in the drying baker 5 in the cylinder 1 by air supply pipe 12 more then.Discharge by spout assembly 13 after entering the moisture that contains in the hot blast absorption clothing of drying baker 5 inside.Discharging air by spout assembly 13 from drying baker 5 also is the effect of leaning on pressure fan 17.And the air of discharging by spout assembly 13 can filter out dust or line bits during through lint filter 14.When coming the clothing of drying roller 1 inside with this hot air circulation mode, microcomputer 100 is that the detected value with electrode sensor signal conversion part 106 is the oven dry degree that clothing is judged on the basis, and with the hot blast temperature of detected inflow cylinder 1 inside in the first temperature sensor signal converter section 109 and detected in the second temperature sensor signal converter section 112 be the drive actions that control heater is come on the basis from cylinder 1 inner hot blast temperature of discharging.But the dryer of this prior art has following point, and promptly 100 pairs of heater-driven portions 124 of microcomputer control in the switching mode.That is to say, 100 pairs of microcomputers the valve of the gas quantity that provides from gas pipe 23 and to mixing tube 24 can be provided control in the switching mode, when cylinder 1 temperature inside reach control during temperature with valve closing, and drop to control lowest temperature value heater once more when following when cylinder 1 temperature inside, this process is carried out repeatedly, so the heat energy that provides to cylinder 1 inside also just has been provided when cutting off the gas supply of heater fully, cylinder 1 temperature inside can descend gradually, thus this dryer can because of heater frequently and close and cause drying time to prolong.
Summary of the invention
In order to address the above problem, the caloric value that the object of the present invention is to provide a kind of method of available by-pass valve control opening degree to come control heater, thus can shorten the heater control device of the dryer of drying time.
In order to achieve the above object, the heater control device of dryer provided by the invention is arranged on can be provided hot-air with the heating, drying clothing to cylinder inside, and in the dryer that the air in the cylinder can be discharged, it comprises the heating fuel control device that can control the heating fuel supply; Can regulate the tunable arrangement of heating fuel control device opening degree; With regulate heating fuel control device opening degree by tunable arrangement, and available control signal is come the control device of control heater caloric value.
Described heating fuel control device is to be made of side by side a plurality of open and close type valves and the linear valve that can regulate opening degree; The opening degree of the controlled producing linear valve of described tunable arrangement; Described control device can directly be controlled the action of open and close type valve.
The heater control device of dryer provided by the invention is the caloric value of coming control heater by the method for the gas supply amount of adjusting the heater use, dryer can be maintained under the control temperature of drying always, so just can avoid when reaching the control temperature, heater need cutting out of prior art existence, and when detecting the long problem of drying time that causes in needing once more this process of heater starting is carried out repeatedly when temperature reaches control lowest temperature value, therefore the heater control device of dryer of the present invention not only can shorten drying time, but also can prevent owing to frequent igniting causes the problem that life of product shortens; Especially the frequent switching of heater during it can prevent to dehumidify in the drying course between interval and end zone, thereby can effectively shorten drying time.
Description of drawings
Be elaborated below in conjunction with the heater control device of the drawings and specific embodiments to dryer of the present invention.
Fig. 1 is the dryer primary structure exploded perspective view of prior art.
Fig. 2 is the dryer parts pie graph of prior art.
Fig. 3 is the heater control device circuit diagram of dryer of the present invention.
Fig. 4 is pwm control circuit figure of the present invention.
Fig. 5 and Fig. 6 are performance diagram of the present invention.
The specific embodiment
Dryer of the present invention constitutes identical with prior art.As shown in Figure 3, the heater control device of dryer of the present invention is to be connected to the input of rectification circuit 30 by the switch SW 1 of power end L, and with the switch SW 2 of power end N, SW3 is connected to another input of rectification circuit 30.Be connected with igniter 33 and ammonium nitrate detecting sensor 45 in addition between contact point between switch SW 1 and the rectification circuit 30 and the power end N.Igniter 33 is the devices that can light a fire to the spark plug shown in Fig. 1 26.And ammonium nitrate detecting sensor 45 is the bimetallic material sensors that open and close by heat, does not have when hot that it is in conducting state, automatically switches into off-state when above when reaching uniform temperature.In addition igniter 33 and ammonium nitrate detecting sensor 45 are connected in series be do not produce heat begin to move the time utilize the ammonium nitrate detecting sensor 45 that is in conducting state to provide electric current for igniter 33.And ammonium nitrate detecting sensor 45 will disconnect after producing heat in the igniter 33, so just can end the action of igniter 33.And heater control device of the present invention also comprises a plurality of valve coils that are connected rectification circuit 30 outputs.As shown in Figure 3, the direct ground connection of output of rectification circuit 30, another output is connected can open and close to mixing tube 24 and provides on the valve winding of combustion gas.Can open and close among the present invention to mixing tube 24 provides the valve of combustion gas to be made of three valves that are set up in parallel.By the coil 36,39 that is connected on rectification circuit 30 outputs, 42 control the on-off action of each valve respectively.Wherein coil 36,39th, the switching of the original valve of control, and coil 42 then is an opening degree of controlling linear valve according to the dc voltage size that adds.That is, be connected with coil 36 on the output of rectification circuit 30, it can drive the switching of first valve.With coil 36 another coil 39 that is being connected in parallel.Microcomputer 100 is by driving element 48 control coils 39.Driving element 48 is a switch type transistor, and it can connect and close the current branch of coil 39 under the control of microcomputer 100.So driving element 48 conductings when microcomputer 100 output high level, the current branch at coil 39 places is switched on, and coil 39 just can drive second valve open.In addition, but the coil 42 different with the coil 36,39 of driven opening type valve is switching degree of controlling linear valve according to the size of dc voltage.When connecting power supply in order to carry out drying operation, the ammonium nitrate detecting sensor 45 that is initially located in conducting state can be igniter 33 provides electric current and hot spot firearm 33, and make the blender 24 inner ammonium nitrate that produce, after producing heat, igniter 33 can cause that ammonium nitrate detecting sensor 45 becomes off-state.And after producing ammonium nitrate in the blender 24, the rectifier power source in the rectification circuit 30 can be the coil 36 that drives first valve electric current is provided, and can control this valve open when coil 36 drives.And, also provide electric current for the coil 39 that can drive second valve.Coil 39 is to be driven by the driving element 48 that is subjected to microcomputer 100 controls.This moment, first valve and second valve all were in opening.When these two valve opens, the DC power supply that can drive the 3rd valve is powered with drive coil 42 to coil 42.At this moment, the voltage swing that provides for coil 42 is to be decided by pulse width modulation (PWM) signal that is subjected to microcomputer 100 controls.Control the opening degree process of the 3rd valve referring to Fig. 4 by coil 42.After by said process three coils all being driven, the combustion gas that can flow into to inside by gas pipe 23 in the time of three valve opens arranging side by side offer mixing tube 24.In mixing tube 24, drawn ammonium nitrate and can be made heater produce heat energy when continuing to provide combustion gas by igniter 33 in addition, the heat energy that produce this moment can provide to cylinder 1 inside by warm-air pipe 20.When driving heater, the clothing that is placed on cylinder 1 inside can be dried by this operating process, and by the hot blast temperature that provides to cylinder 1 inside with decide the caloric value of heater from the hot blast temperature difference that cylinder 1 discharges.That is, but microcomputer 100 is caloric values of adjusting heater with the method for pulse width modulation (PWM) signal of regulating drive coil 42.
Fig. 4 is pwm control circuit figure of the present invention.As shown in Figure 4, by resistance R 1, R2 carries out becoming after the dividing potential drop Continuity signal of transistor Q1 from pulse width modulation (PWM) signal of microcomputer 100.Varying in size of pulse width modulation (PWM) signal, the conducting degree of transistor Q1 are just different.And the operating state of transistor Q1 can determine the conducting degree of coupled another transistor Q2.Transistor Q2 directly is connected on 12 volts the dc source, and the DC voltage size that provides to coil 42 can be provided again its operating state.Fig. 5 illustrates the relation between pulse width modulation (PWM) signal and the linear valve opening degree.Be that microcomputer 100 is to export suitable pulse width modulation (PWM) signal according to the opening degree of valve.
Fig. 6 illustrates the relation between the caloric value of the opening degree of valve and heater.Heater control device of the present invention is the caloric value of coming control heater with the method for regulating winding 42 in the time of the coil 36,39 of opening two open and close type valves.In addition, the present invention is that the specific temperature rise when drying beginning with detection is also controlled and the method for the caloric value that climbing is inversely proportional to is come index drum 1 temperature inside, does not allow this temperature reach the lower limit of being controlled.And, the present invention is that the maximum caloric value with when beginning oven dry heats, when reaching control lowest temperature value, the opening degree that can dwindle valve according to the temperature difference between present temperature and the control temperature value to be reducing caloric value, and utilizes FEEDBACK CONTROL that it is maintained under the control temperature always.Be that the present invention is that the method for utilizing the valve that will offer heater fuel to adjust to desired opening degree is provided by the gas quantity that is provided, so just can adjust the caloric value of heater, so that the dryer stable maintenance is under oven dry control temperature.
Claims (1)
1. the heater control device of a dryer, being arranged on to provide hot-air with the heating, drying clothing to cylinder (1) inside, and in the dryer that the air in the cylinder (1) can be discharged, the heater control device of described dryer comprises: the heating fuel control device that can control the heating fuel supply; Can regulate the tunable arrangement of heating fuel control device opening degree; With regulate heating fuel control device opening degree by tunable arrangement, and available control signal is come the control device of control heater caloric value; It is characterized in that: described heating fuel control device is to be made of side by side a plurality of open and close type valves (36,39) and the linear valve (42) that can regulate opening degree; The opening degree of the controlled producing linear valve of described tunable arrangement (42); Described control device can directly be controlled the action of open and close type valve (36,39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586500A CN100375817C (en) | 2002-12-25 | 2002-12-25 | Heater controller of drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021586500A CN100375817C (en) | 2002-12-25 | 2002-12-25 | Heater controller of drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1510205A CN1510205A (en) | 2004-07-07 |
| CN100375817C true CN100375817C (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021586500A Expired - Fee Related CN100375817C (en) | 2002-12-25 | 2002-12-25 | Heater controller of drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100375817C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100872233B1 (en) * | 2007-04-18 | 2008-12-05 | 엘지전자 주식회사 | Dryer |
| KR20140065263A (en) * | 2012-11-21 | 2014-05-29 | 엘지전자 주식회사 | Clothes treating apparatus with hot air supply device and an operating method thereof |
| JP6683469B2 (en) * | 2015-12-16 | 2020-04-22 | 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． | Clothes dryer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415313Y (en) * | 2000-03-20 | 2001-01-17 | 林永暖 | Gas valve and fan speed adjuster with encoder for gas water heater |
-
2002
- 2002-12-25 CN CNB021586500A patent/CN100375817C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415313Y (en) * | 2000-03-20 | 2001-01-17 | 林永暖 | Gas valve and fan speed adjuster with encoder for gas water heater |
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| Publication number | Publication date |
|---|---|
| CN1510205A (en) | 2004-07-07 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20100125 |