CN101012615A

CN101012615A - Temperature controlling method for hot blast drying device used in warp sizing device

Info

Publication number: CN101012615A
Application number: CN 200710006955
Authority: CN
Inventors: 山本刚
Original assignee: Tsudakoma Industrial Co Ltd
Current assignee: Tsudakoma Corp
Priority date: 2006-02-01
Filing date: 2007-01-31
Publication date: 2007-08-08
Also published as: JP2007204871A

Abstract

The object of the present invention is to provide a temperature control technology which is used in a warp yarn sizing apparatus and for hot air drying apparatus having several air heaters with different kinds and can improve the productivity of good warp yarn bundle and is in favor of the energy cost. A temperature controller of the invention at least programs a first control mode which detects the inner temperature of a dry chamber, outputs a heat operating signal to each heat regulator to make the detected temperature adjacent to a prescribed value to execute temperature control; and a second control mode for outputting a heat operating signal for restraining the heating unit function extend in the heat compared with the first control mode, the temperature controller is running in the hot air drying apparatus to execute one of the two control modes, and execute another control mode when the internal temperature of the dry chamber becomes prescribed status.

Description

The temperature-controlled process of the hot-air drying device that uses in the device of sizing machine for warp yarn

Technical field

The technology of the hot-air drying device that the present invention relates to use in device of sizing machine for warp yarn, more detailed theory relates to the technology that can suppress cost of energy in having the hot-air drying device of diverse a plurality of air heaters.

Background technology

The hot-air drying device that in device of sizing machine for warp yarn, uses, big it, possess: the warp thread walking path along the moisture state of starching has the hothouse of the circulating path of air-flow, sends into the pressure fan of air in described hothouse, all heat the described air of sending into described hothouse and the air heater that disposes.About such air heater, have by (for example with reference to patent documentation 2) by supplying with (for example with reference to patent documentation 1) that steam radiator that steam carries out air heat constitutes, constituting by the electric heater that uses electric energy to carry out air heat.

Pluses and minuses are separately arranged in above-mentioned air heater.The air heater that only constitutes by the steam radiator specially that patent documentation 1 is such, because use steam as thermal source, so reach the desired temperature needs time to a certain degree that to move to hot blast temperature from beginning to supply with steam, the warp thread drying is insufficient around here, reduction is through yarn quality, the state of perhaps considering hot blast temperature must suppress the yarn speed acceleration towards high-speed cruising, and the adjustment of relevant service condition is complicated and become and harm the reason that warp thread bundle productivity ratio improves.In addition, the air heater that only is made of electric heater specially that patent documentation 2 is such is compared with the air heater that only uses the steam radiator to constitute, and can accelerate to arrive target temperature, but because increase electricity consumption by the electric power heating, existing problems aspect cost of energy.

In addition, also known to air heater, and with steam radiator and electric heater (for example with reference to patent documentation 3).But, because be the technology of often using electric heater, so the consumption electric power of electric heater is big.About the hot-air drying device of the device of sizing machine for warp yarn of the different a plurality of air heaters of such use air heat characteristic, also do not know not damage through yarn quality and at device favourable aspect the cost of energy at present.

[patent documentation 1] Japanese publication communique is put down into 2-80659 communique (first figure)

Clear and the 35-4553 communique (second figure) of the open communique of [patent documentation 2] Japanese Utility Model

[patent documentation 3] Japanese publication communique 2000-192364 communique (Fig. 1)

Summary of the invention

Therefore, in the hot-air drying device that the objective of the invention is in device of sizing machine for warp yarn, use with diverse a plurality of air heaters, provide the productivity ratio of good warp thread bundle is improved, and aspect cost of energy favourable temperature control technology.

Therefore, the hot-air drying device that uses in device of sizing machine for warp yarn as prerequisite of the present invention possesses: the hothouse that has the circulating path of air-flow along the walking path of moistening warp thread, in described hothouse, send into the pressure fan of air, the described air of sending into described hothouse heated dispose, the air heater that adds heat by the heat regulator adjustable air, with temperature controller to each heat regulator quantity of heat given up operation signal, in described a plurality of air heaters, comprise: regulate the steam radiator of supplying with vapor volume by steam control valve as heat regulator, heat regulator by correspondence regulate caloric value with the different heat-generating units of described steam radiator.And purport of the present invention is, programme out at least internal temperature of detection hothouse of described temperature controller is output as to each heat regulator and makes first control model of detected temperatures near the heat operation signal of target temperature setting value; Compare second control model of the heat operation signal of the effect degree that has suppressed the described heat-generating units in the caloric value with described first control model with output, described temperature controller is when hot-air drying device moves, carry out a certain in described two kinds of control models, and, because the internal temperature of hothouse becomes the state of regulation, carries out described alternative control model.

Temperature controller, the air heat amount of regulating steam radiator or the heat-generating units different with it respectively makes the internal temperature of hothouse set value near target temperature.In addition, main cause as temperature controller switching controls pattern, the internal temperature that can enumerate hothouse becomes the target temperature setting value, specifically, the internal temperature of hothouse is the state that differs greatly for the target temperature setting value, it also is such state (in other words, the internal temperature of hothouse is near the state of target temperature setting value).According to the present invention, temperature controller is by the state corresponding control model of execution with the internal temperature of hothouse, under the state that internal temperature differs greatly for the target temperature setting value, by carrying out first control model of the caloric value effect degree that improves heat-generating units, together effectively use the air heat of steam radiator and heat-generating units, can make the internal temperature of hothouse reach the target temperature setting value rapidly, thereafter, under the state of internal temperature near the target temperature setting value of hothouse, by carrying out second control model of the effect degree that suppresses steam heat-generating units in addition, mainly use the air heat of steam radiator, can maintain the target temperature setting value to the internal temperature of hothouse.Thus, because hot blast temperature reaches target temperature rapidly, so the degree of drying of the warp thread of process starching is stable, can keep the quality of the warp thread of hope, simultaneously because in the running of device of sizing machine for warp yarn (promptly, in the first～the second control model) use steam all the time, so the vapor volume equalization of supplying with from steam boiler can suppress whole cost of energy.

Here, about heat-generating units, so long as the thermal source different with steam, to have speed hot and can to regulate the heat-generating units of caloric value all passable.For example, can consider fuel element that the electric heater of corresponding supply capability amount heating, the flammable fluid that burning is supplied with (for example flammable oil, imflammable gas etc.) are generated heat etc.Particularly under the former situation, because speed is hot good, be suitable for stable through yarn quality, and compare with existing apparatus, can suppress the consumption figure of the higher electric power of energy unit price, so can suppress the cost of energy of device of sizing machine for warp yarn operation.For the former, more particularly, described heat-generating units is by constituting via the electric heater that can regulate caloric value as the electric power controller of heat regulator.In addition, as the heat operation signal of temperature controller to the heat regulator output of correspondence, can consider any one of analog signal of signal, the output of respective operations value according to the dutycycle logic corresponding output with operating value, about electric power controller, can consider any of electric governor that shutter that corresponding above-mentioned logical signal opens and closes or corresponding analog signal are regulated the electric power amount as the heat regulator of electric heater.In addition, as the control that makes internal temperature near the target temperature setting value, except of the control of the hothouse internal temperature of eliminating actual measurement, also comprise and regulate so that the control that the internal temperature of hothouse does not set value away from target temperature for the direction adjusted heat operation signal of the departure of target temperature setting value.

As the internal temperature of hothouse for the target temperature setting value away from state, specifically, when the more high-speed cruising of situation that does not reach enough temperature except internal temperature begins, also consider in service at quetsch, the situation of steam (vapour pressure, temperature) when reducing for a certain reason from the steam boiler supply.So, internal temperature and target temperature at hothouse set value under the state that differs greatly, execution is based on the temperature control of first control model, under the state of internal temperature near the target temperature setting value, the temperature control of second control model that adopts in the time of can carrying out based on common high-speed cruising.For the former (promptly, when high-speed cruising begins), more particularly, constitute by following any one mode: when device of sizing machine for warp yarn begins high-speed cruising, carry out described first control model, afterwards, carry out described second control model because detected temperatures surpasses near the first threshold of decision described target temperature setting value, perhaps consider to reach the stipulated time that the required time of target temperature is predetermined, carry out described second control model owing to having passed through.Thus, when high-speed cruising begins, because the temperature in the hothouse can set value near target temperature rapidly, so compared with prior art, stablizing of the part of when high-speed cruising begins, reeling through yarn quality (moisture content of warp thread), improve the operational efficiency of weaving loom in the weaving operation, and, aspect cost of energy, can realize the operation of favourable device of sizing machine for warp yarn.

For the latter (promptly, when reducing) from the supply steam of steam boiler, compare with second control model of now carrying out, can carry out the control that increases the effect degree of heat-generating units in the caloric value, about so appropriate control, can carry out the control of the different control model of control identical or execution control mode with above-mentioned first control model.More particularly, can be after having carried out second control model of after described first control model of execution, carrying out, because detected temperatures does not reach described target temperature setting value, become the state that does not reach near second threshold value of the setting target temperature setting value, carry out described first control model, as other object lesson, the 3rd control model of the heat operation signal of the effect degree that has increased heat-generating units described in the caloric value is compared in the output of can also further programming in described temperature controller with described second control model, described temperature controller is after having carried out second control model of carrying out after described first control model of execution, further because detected temperatures does not reach described target temperature setting value, become the state that does not reach near second threshold value of the setting target temperature setting value, carry out described the 3rd control model.By any formation, suppose the steam heat (vapour pressure that unexpected generation is supplied with as thermal source, temperature) reduction, accompany therewith, temperature in the hothouse reduces, identical when beginning with above-mentioned high-speed cruising, the temperature control of the first or the 3rd any one control model of the effect degree that has increased heat-generating units is compared in execution with second control model, can make the internal temperature of hothouse reach the target temperature setting value rapidly thus, thus, the steady quality of warp thread bundle, the operational efficiency of the weaving loom in the weaving operation improves.

In second control model, compare with first control model, can suppress caloric value from heat-generating units, below half of the effect degree in the time of for example can be for first control model, preferably make caloric value from heat-generating units be zero or its near be worth.Thus, effectively use the steam energy, make the steam consumption figure tranquilization of using in the hot-air drying device by first control model and second control model.As the program of in temperature controller, installing, preferably as the following control of described first control model programming: with relevant value decision is to be worth near maximum or its from the caloric value of heat-generating units, and, decision is exported the control of corresponding heat operation signal as the aperture amount of the described steam control valve of heat operation signal on the direction of eliminating the deviation that sets value for described target temperature; Simultaneously, as described second control model, the control that programming is following: with relevant value decision is a near value zero or it from the caloric value of described heat-generating units, and the aperture amount of the described steam control valve of decision on the direction of eliminating the deviation that sets value for described target temperature, each heat operation signal that output is corresponding.Carry out the first such control model,,, can make the hot blast temperature in the hothouse reach the target temperature setting value rapidly by air heat from steam radiator and heat-generating units according to the aperture amount and the value relevant of decision with caloric value.And, in second control model, aperture amount and the value relevant according to decision with caloric value, mainly use the air heat of steam radiator, so by the first～the second control model, make the consumption figure equalization of supplying with steam, thus the steam radiator can effectively be utilized, favourable aspect cost of energy.

To this, in the 3rd control model, so long as compare the mode of the effect degree that has increased the heat-generating units in the caloric value with above-mentioned second control model, any mode can, as different with above-mentioned first control model in fact control forms, can be to use to greatest extent outside the steam, replenish the mode of using heat-generating units.For the latter, more particularly, in described temperature controller, as described the 3rd control model, the following control of can programming out: the decision of the aperture amount of described steam control valve is maximum or near value it, and decision for make described detected temperatures near target temperature setting value with from the relevant value of the caloric value of described heat-generating units, the heat operation signal that output is corresponding.Thus, even suppose the steam heat (vapour pressure that generation is suddenly supplied with as thermal source, temperature) reduction, the interior temperature of hothouse reduces together therewith, it is identical when above-mentioned high-speed cruising begins, by carrying out the temperature control of the 3rd control model, because carry out air heat according to the aperture amount of the valve that is determined and the value relevant with caloric value, so can make the internal temperature of hothouse reach the target temperature setting value rapidly, the part that warp thread quality problems (because variation through yarn intensity that the change of moisture rate causes) do not take place therefrom improves, the steady quality of warp thread bundle, the operational efficiency of the weaving loom in the weaving operation improves.In the said here value relevant with caloric value, for example when heat-generating units was electric heater, the current value (power value) that offers electric heater was corresponding with it, and in addition, under the situation that is combustion apparatus, the fuel feed of unit interval is corresponding with it.In addition, the maximum of the aperture of the steam control valve in each control model of above-mentioned expression particularly is finer opening 100% (being full-gear), as near the scope this maximum, specifically comprises aperture 70%～100%.

Along with the execution of more the 3rd control model of the effect of heat-generating units, keep air (hot blast) temperature rightly, but, can turn back to original control afterwards by the recovery of steam heat (vapour pressure, temperature).Its reason is, as the result who supplies with the heat surplus, the state that hot blast temperature surpasses the target temperature setting value takes place conversely, if continue such state for a long time, the warp thread of starching over-drying (moisture content reduction) then, the result appears at the problem through the yarn quality aspect such as warp thread broken string often takes place in the later weaving operation, in addition, also becoming problem aspect the cost of energy of device of sizing machine for warp yarn operation.Therefore, preferably can carry out described second control model of comparing the effect degree that suppresses the described heat-generating units in the caloric value with the 3rd control model once more.More particularly, described temperature controller is after having carried out described the 3rd control model, and then, surpassed near the 3rd threshold value of the decision target temperature setting value because detected temperatures is the value that has surpassed the target temperature setting value, carry out described second control model once more.

Carry out any pattern this point in first control model or the 3rd control model different about the reduction of when above-mentioned high-speed cruising begins, carrying out the first control model this point and corresponding temperature with it, hot-air drying device as device of sizing machine for warp yarn, except the device of only implementing the former and the device of only implementing the latter, also consider together to implement above-mentioned the former, the latter's device, also comprise any one form in the present invention.

In addition, about the control model in the temperature controller (between first control model～the 3rd control model) switching, can manual switchover, also can automatically switch.More particularly, under the former situation, by the alarm of sending according to the temperature regime in the hothouse, the operator can operate change-over switch and switch to other control model.In addition, in the latter case, temperature controller is judged according to the situation of detected internal temperature, can automatically switch to corresponding control model according to result of determination.As the latter,, can expect the facilitation in the warp sizing operation by automatically switching.

In addition, between first control model～the 3rd control model, judgement about the temperature when automatically switching to other control models, as mentioned above, can carry out, but also can carry out the switching of other control models for the variations in temperature of moment because of the threshold value that has surpassed as benchmark, carry out more stable temperature control, for such decision condition, specifically, can adopt following any one.

When 1) detected temperatures has surpassed as the state continuance of first of benchmark～the 3rd threshold value official hour, establish decision condition and set up.2) in the official hour cycle, the time that detected temperatures has been surpassed the state that becomes first of benchmark～the 3rd threshold value accumulates, and, when the accumulated time of this official hour in the cycle surpassed the threshold value of regulation, establish decision condition and set up.3) from detected temperatures surpassed as first of benchmark～the 3rd threshold value first constantly, passed through the detected temperatures constantly of second after the stipulated time t when having surpassed as first of said reference～the 3rd threshold value, establish decision condition and set up.Above-mentioned any judgement form is also contained near " because detected temperatures has surpassed the setting value that determines target temperature, carrying out corresponding control model " of mentioning among the present invention.

And, about the switching between first～the 3rd control model, above-mentioned 1) as an example, if when considering that device of sizing machine for warp yarn begins high-speed cruising, when the vapour pressure of supply descends, with and when recovering, can constitute as follows.A) temperature controller is when device of sizing machine for warp yarn begins high-speed cruising, carry out described first control model, afterwards and since detected temperatures surpassed near the state continuance of the first threshold of the decision described target temperature regulation during, carry out described second control model.B) temperature controller is after carrying out described second control model and since detected temperatures do not reach described decision second threshold value state continuance regulation during, carry out described the 3rd control model.C) temperature controller has been after having carried out described the 3rd control model and since detected temperatures surpassed described decision the 3rd threshold value state continuance regulation during, carry out described second control model.About these points, for above-mentioned 2) and 3) also identical.For any form, when a kind of control model switches to other control model, according to the state continuance relevant with detected temperatures wish during switch, the switching of the control model that causes so can stop hypothesis moment to satisfy condition can realize more stable temperature control.

For above-mentioned threshold value, can in following scope, determine as first of benchmark～3rd.As first threshold, can in the scope that deducts tens ℃～target temperature setting value for the target temperature setting value (but not comprising target temperature setting value self), determine, as second threshold value, decision is suitable value in target temperature sets value the scope (but not comprising the target temperature setting value) that deducts tens ℃～target temperature setting value, as the 3rd threshold value, decision is suitable value in target temperature setting value～target temperature sets value the scope (but not comprising the target temperature setting value) that adds tens ℃.

Description of drawings

Fig. 1 is all figure of the hot-air drying device that uses in device of sizing machine for warp yarn.

Fig. 2 is the internal frame diagram of the control device of control device of sizing machine for warp yarn and hot-air drying device.

Fig. 3 is illustrated in the temperature controller that constitutes major part of the present invention, controls to handling process between the end from the beginning temperature.

Fig. 4 is the figure of temperature control situation of the reality of the expression switching of following the control model that control device of the present invention carries out.

Fig. 5 represents to control to other handling process between the end from the beginning temperature.

The internal frame diagram of the example of other of Fig. 6 control device that to be expression control device of sizing machine for warp yarn and hot-air drying device.

The specific embodiment

Use description of drawings to be used to implement concrete mode of the present invention below.With reference to Fig. 1, the hot-air drying device 10 that uses in device of sizing machine for warp yarn makes in operation (not shown) before by the inside of the hothouse 14 of the laminar warp thread 12 that is in moisture state of starching by sending into hot blast and carries out drying, in back operation thereafter, make the warp thread contact further carry out drying, and be wound into warp thread bundle (not shown) by cylinder drying section (not shown).

Generally say, hot-air drying device 10 has box-shaped hothouse 14 and air heater 22, this air heater 22 is set on the whole air air-supply path 18 by hothouse 14 inside, by pressure fan 20 and be used for that the air of supplying with to hothouse 14 by pressure fan 20 is heated a plurality of heaters that dispose and constitute.

Hothouse 14 extends in its inside along the warp thread direction of travel air-supply path 14a is set, and, for the warp thread 12 by sheet at one end and the other end have opening 24,26.And the position has respectively and is blown into mouthfuls 28 and exhaust outlet 30 by air air-supply path 18 near each end of downstream one side of the warp thread direction of travel of hothouse 14 and upstream one side.

In the air-supply path 14a of hothouse 14, be blown into mouthfuls 28 and exhaust outlet 30 between, for example dispose the temperature sensor 16 that constitutes by thermocouple etc. with can measuring air themperature.

Air heater 22 is made of the heater of a plurality of polyphone settings, the steam that not shown steam boiler is supplied with by the upstream constitutes as the steam radiator 42 of thermal source and the electric heater 44 that is provided with in its downstream, this electric heater 44 for example is made of nickel wire or ceramic heater constant resistance body, generates heat by the electric power of supplying with.In air air-supply path 18, have: the carrier pipe 18a of the exhaust outlet 30 of connection hothouse 14 and the air introduction part of steam radiator 42, the carrier pipe 18b of the leading-out portion of connection steam radiator 42 and the air introduction part of electric heater 44, the carrier pipe 18c of the leading-out portion of connection electric heater 44 and the air introduction part of pressure fan 20, and the carrier pipe 18d that is blown into mouth of the leading-out portion of connection pressure fan 20 and hothouse 14, the action that air air-supply path 18 constitutes by pressure fan 20,14a imports air through exhaust outlet 30 from the air-supply path, and heat via steam radiator 42 and electric heater 44, via being blown into mouthfuls 28 air circulation paths of returning hothouse 14.Thus, for the warp thread of the moisture state that carries out in the inside of hothouse 14, as shown by arrows, upstream side uses hot blast to carry out drying from the downstream of warp thread direction of travel.

Upstream side at the exhaust outlet 30 of hothouse 14 is provided with exhaust outlet 31, and is provided with the exhaust blower 32 that connects by air draft carrier pipe 36 at exhaust outlet 31.In device of sizing machine for warp yarn, for example its operation conditions is: for example because the rising of hothouse 14 humidity is moved exhaust blower 32, from its export mouth 38 hot blast of hothouse 14 inside is discharged outside system, can reduce hothouse 14 humidity inside thus.

In with the steam radiator 42 of steam as thermal source, setting makes combustible (imflammable gas for example, flammable fluid etc.) the vaporific not shown steam boiler of burning and regulate steam control valve 40 from the supply steam of thermal source according to the signal of telecommunication, they by pipe 41 airtightly polyphone connect.In steam control valve 40, corresponding operational ton Signal Regulation steam quantity delivered from temperature controller 64 outputs described later can be regulated the caloric value (air heat amount) from steam radiator 42 thus.Relative therewith, about electric heater 44, the heat regulation unit of same adjusting caloric value is set also, its details aftermentioned as heat-generating units.

Pressure fan 20 and exhaust blower 32 link with the output shaft of the motor 46,35 that is provided with separately respectively, the rotation of the motor by correspondence produces air-flow, sends into hot blast or the moisture of hothouse inside is released the raising drying efficiency to the outside to hothouse 14 inside.These motor 46,35 are by master controller 52 controls described later, its details aftermentioned.

Fig. 2 represents the control block diagram of hot-air drying device 10.In general, the control device 50 that uses in hot-air drying device 10 comprises: the temperature controller 64 that has the internal temperature of the traveling controller 57 of walking of master controller 52, control warp thread of all control functions of device of sizing machine for warp yarn and adjusting hothouse 14 except the control function of hot-air drying device 10.

Master controller 52 for example is made of known controllers such as Programmable Logic Controllers, select a plurality of action buttons of operating, i.e. the signal S0～S3 of preheating button 53, low cruise button 54, high-speed cruising button 55, stop button 56 in the input of its input part as required from the operator.The efferent of master controller 52 is except walking control part 57 and temperature controller 64, also be connected with not shown controller etc., in these circuit except can be control signal, specifically, be used to control the run signal S6 of warp thread walking, speed selects signal S7 to offer outside walking control part 57 and the temperature controller 64, can also offer not shown controller, in addition, can also offer corresponding shutter 63 to the air-supply instruction S8 and the air draft instruction S9 that are used to make pressure fan 20 and exhaust blower 32 to enter operating state, 62, and, can offer temperature controller 64 to temperature control instruction S4.

In master controller 52, pack in advance and be used to control the control program of device of sizing machine for warp yarn and hot-air drying device 10, master controller 52 passes through performing a programme, corresponding each input signal is to each control part output control signal, all actions and the hot-air drying device 10 of control device of sizing machine for warp yarn.

On the other hand, temperature controller 64 is to the observed temperature signal S5 of its input part input from temperature sensor 16, on the other hand, on its efferent, connect heat regulator (more particularly, being current feedback circuit 66 and the electric governor 67 that drives steam control valve 40).And temperature controller 64 decisions are used to carry out the temperature controlled heat operating value of the internal temperature of hothouse 14 with respect to the target temperature setting value, and corresponding heat operation signal S10, S11 are offered current feedback circuit 66 and electric governor 67.

On master controller 52 and temperature controller 64, but connect setting apparatus 70 by data/address bus bs bidirectional transmit-receive information ground.Setting apparatus 70 can show numerical value on not shown picture, literal or figure, by can input value by cross key of showing on the picture etc., the known setting apparatus that the touch pad of literal etc. constitutes constitutes, the operator is via setting apparatus 70, except the service condition of device of sizing machine for warp yarn, target temperature setting value of using during also input temp is controlled etc. and the relevant condition of temperature control, can confirm from each controller that connects read and the control information that shows at picture (more particularly, except the warp thread speed of travel and warp rolls around amount, also have the internal temperature values T etc. of the hothouse 14 of the actual measurement of periodically reading via temperature controller 64).

The air-supply of the air-flow of control hot-air drying device 10 for example is made of induction conductivity with motor 35 with motor 46 and the air draft that is used for air draft, shutter 63 and shutter 62 be by the output of respective signal S8 and signal S9, makes to supply with the formations such as electromagnetism shutter of disconnection/continuation from source power supply to the electric power of each motor.

The steam control valve 40 and the electric governor 67 corresponding heat operation signal S10 and the operation signal S11 of heat regulator as the internal temperature of control hothouse 14 regulate each quantity delivered as the steam and the commercial power of thermal source.Steam control valve 40 is made of the known choke valve of aperture according to the command signal control valve of input, and, current feedback circuit 66 drives driver by the electric current of and instruction signal S10 correspondence being offered not shown valve body, regulates the aperture of steam control valve 40.Relative therewith, electric governor 67 has semiconductor elements such as thyratron, power transistor, the known power regulation circuit of being regulated optimizing phase adjusting supply capability by the correspondence instruction constitutes, and electric governor 67 offers electric heater 44 by the handle electric power corresponding with operation signal S11 and regulates caloric value.

Temperature controller 64 is programmed for the various control pattern that can selectively carry out the detected temperature in inside that is used to be controlled at hothouse 14 in advance in advance.For the output that is used to regulate vapor volume, the signal of telecommunication of the output valve corresponding with operational ton is exported as direct control amount signal, in answering steam control valve 40 and electric governor 67, the aperture of respective operations amount Signal Regulation valve and the power phase of energising, can produce the heat of respective operations amount thus, control air heat amount.In addition, as the control that temperature controller 64 can be obtained, also consider other control.For example, can constitute steam control valve 40 and electric governor 67 with open and close valve and electromagnetism shutter, and according to according to regulating each caloric value with each heat operation signal of operational ton time corresponding ratio ON/OFF output.

When operation is in the device of sizing machine for warp yarn of halted state, import each action button by the operator, master controller 52 is abideed by the control program of storage in advance, to each controller output necessary control signal, makes device of sizing machine for warp yarn and hot-air drying device 10 actions.Specifically, when the operator operates the operation signal S0 of preheating button 53 input correspondences, master controller 52 passes through executive control program, open output air-supply instruction S8 and drive pressure fan 20, make the inside of hothouse 14 that circulating current take place, and,, temperature controller 64 is carried out be used to the air themperature that makes hothouse 14 inside to reach the temperature control of target temperature by opening output temperature control instruction S4.

Temperature controller 64 is by input temp control instruction S4, make the temperature control model become out state, the a series of temperature control of beginning aftermentioned, and, be programmed for the input of respective signal S7 in advance, can be switched to a certain pattern from the different various control pattern of effect degree as the electric heater 44 of heat-generating units.Therefore, below use Fig. 3, as first embodiment, explanation device of sizing machine for warp yarn bring into operation to stop between, in other words, from temperature controller 64 being left input temp control instruction S4, the situation switching controls pattern of the internal temperature of corresponding hothouse, execution temperature control, that follows device of sizing machine for warp yarn stops to control a series of processing of carrying out between the end.

Following first embodiment is when the beginning high-speed cruising, execution sets value near target temperature in order to make detected temperatures, heat regulator is exported the temperature control of carrying out temperature controlled first control model, according to the internal temperature T of hothouse 14 reach target temperature setting value LV0 near, carry out and compare the temperature controlled example that suppresses second control model of the effect degree of heat-generating units in the caloric value with first control model.And, it is the temperature control period of carrying out second control model on high-speed cruising ground, reduce according to internal temperature T along with the hothouses such as reduction by 14 of vapour pressure, the environs of desired temperature LV0 departs from objectives, the temperature controlled example that increases the 3rd control model of the effect degree of heat-generating units in the caloric value is compared in execution with second control model, be to return to original the same according to vapour pressure thereafter, the internal temperature T of hothouse 14 rises, near depart from objectives the scope desired temperature LV0 is carried out the temperature controlled embodiment of second control model once more.

Here, in embodiment described later,, touch simply for the concrete mode of relevant temperature controlled first～the 3rd control model.At first, (running status usually) second control model commonly used is the corresponding heat operation signal of normal off status ground output to electric heater 44 decisions as heat-generating units in high-speed cruising, and in order to eliminate the deviation of detected internal temperature T for target temperature setting value LV0, the aperture of decision steam control valve 40 and the corresponding aperture amount of output are instructed and are regulated, first corresponding when beginning with the high-speed cruising control model is output corresponding heat operation signal in normally open ground to electric heater 44 decisions as heat-generating units, and in order to eliminate the aperture of detected internal temperature T for the deviation decision steam control valve 40 of target temperature setting value LV0, the corresponding heat operation signal of output is regulated.In other words, second control model is exported each heat operation signal with respect to first control model, suppresses in the caloric value effect degree as the electric heater 44 of heat-generating units.In addition, the decision of the 3rd control model maintains the almost corresponding heat operation signal of full-gear ground output with the aperture of steam control valve 40, and decision electric heater 44 as heat-generating units under the situation of the internal temperature T miss the mark desired temperature LV0 of actual measurement becomes out state; Becoming output each heat operation signal in off status ground when above for target temperature setting value LV0.In other words, the 3rd control model is exported each heat operation signal, increases so that compare the effect degree that makes in the caloric value as the electric heater 44 of heat-generating units with second control model that electric heater 44 is failure to actuate.

With reference to Fig. 3, temperature controller 64 at first makes the temperature control model for opening state by input temp control instruction S4, begin a series of temperature control (ST001), temperature controller 64 enters into judgement and whether opens the treatment step (ST002) of having imported speed selection signal S7.Speed selects signal S7 often to open the signal of output during high-speed cruising, and is the signal that closes output beyond this.Under this situation, because signal S7 is in the pass output state, enter into " NO ", carry out the temperature control (ST003) of second control model of the effect degree that suppresses electric heater 44, and enter into the determination processing (ST004) whether temperature control instruction S4 opens.If open input temp control instruction S4, then turn back to treatment step (ST002), continue to carry out about speed and select the supervision of the switching of signal S7 to handle the temperature control (ST003) of (ST002) and second control model, for aperture near target temperature setting value control steam control valve 40.Relative therewith, among the treatment step ST004 in front, suppose when the temperature control instruction S4 that comes autonomous controller 52 for example closes output owing to reasons such as warp thread broken string or operation stop button 56 take place when " Yes " (), making the temperature control model is off status, and, zero output is as adjustment signal S10, the S11 of heat operational ton signal, the internal temperature of ending to carry out so far that makes is controlled (ST005) near a series of temperature of target temperature setting value, finishes relevant temperature controlled a series of processing.

In addition, the operator confirms the internal temperature T of the hothouse 14 that shows on setting apparatus 70, reach preparation can low cruise moment of temperature, when operation low cruise button 54, the input of master controller 52 accompaniment signal S1, output run signal S6.Soon afterwards, operation high-speed cruising button 55 input signal S2, thus, master controller 52 leaves output speed and selects signal S7.In temperature controller 64, when input speed is selected signal S7, in above-mentioned treatment step ST002, enter into " YES ", make the inter-process sign A of the executing state of expression first control model become out state, begin to compare the temperature control (ST006) of first control model of the effect degree that increases electric heater 44 simultaneously with above-mentioned second control model, and enter into next step, carry out and judge the processing (step ST007) of whether not closing output temperature control instruction S4.Suppose at master controller 52 and close for a certain reason when having exported temperature control instruction S4, identical during with above-mentioned treatment step ST004, enter into treatment step ST005, to become inter-process sign A, B all is the state that closes, make the temperature control model become off status simultaneously, finish a series of temperature control.In addition, inter-process sign A and inter-process sign B described later represent the executing state of first control model and the 3rd control model, it is the sign that uses in the inter-process (judgement during the switching controls pattern) at temperature controller 64, under the state that mark A is out, select first control model, under the state that mark B is out, select second control model, any one indicates the state that all closes, and can think to select the state of second control model.

In addition, when temperature control instruction S4 is out state, promptly, when the result of determination at treatment step ST007 is " NO ", enter into next treatment step, according to the situation of the internal temperature T of hothouse 14 carry out could the switching temperature control model determination processing, carry out processing (ST008) to relevant control model branch.About this judgement, according to present moment or comprise the temperature value in the past of present moment and judge, for these temperature regimes constantly, according to 1) whether condition A set up, 2) condition B whether set up or 3) above-mentioned two conditions all are false, and the control model of now just carrying out is switched to corresponding first control model, the 3rd control model or second control model.

Here as condition A, judge that first control model that whether can carry out switches to second control model as other control model when high-speed cruising begins, specifically, the control model of carrying out be first control model (promptly, sign A is the ON state), and not reaching (promptly as the threshold value LV1 of first threshold, do not arrive target temperature setting value LV0 near) as condition, described first threshold is set to the value of the internal temperature T of actual measurement than low several ℃ of target temperature setting value LV0.

As condition B, during carrying out second control model, for example follow the reduction judgement of hothouse internal temperature could switch to the 3rd control model, and the rising of following the hothouse internal temperature during carrying out the 3rd control model is judged could switch to second control model, its particular content aftermentioned.

Because beginning high-speed cruising, carry out first control model by previous treatment step ST006, when arriving treatment step ST008, because mark A is out state by periodic processing, the internal temperature T of actual measurement does not reach threshold value LV1 as yet, so above-mentioned condition A is in the state of still setting up.Therefore, continue to carry out first control model to treatment step ST009 branch.Then, turn back to treatment step ST007, carry out above-mentioned treatment step ST007 and treatment step ST008 once more periodically.Therefore, along with the temperature control of carrying out first control model of comparing the effect degree that improves electric heater 44 with second control model, electric heater 44 is kept out the aperture that state is regulated steam control valve 40 simultaneously, the result, compare caloric value during with execution second control model and increase, internal temperature T rises rapidly.Soon, because internal temperature T reaches near the threshold value LV1 the target temperature setting value LV0, condition A becomes is false, condition B described later in addition also is false, as a result, by the judgement of treatment step ST008, be branched off into treatment step ST010, temperature controller 64 switches to second control model execution temperature control (ST010) from first control model so far, and carries out above-mentioned treatment step ST007, treatment step ST008 and treatment step ST010 once more periodically.

Then, temperature control by second control model, temperature controller 64 for make caloric value from electric heater 44 be zero or its near be worth, the value of decision for the current instruction value of signal S11 is restrained, and as corresponding signal output, while, so that the internal temperature T of hothouse 14 sets value LV0 near target temperature, the aperture of decision steam control valve 40 was exported the signal S10 that instructs as corresponding aperture amount in order to regulate.So, by carrying out the temperature control of second control model that the effect degree of electric heater 44 is restrained, steam radiator 42 is worked, therefore by the temperature control of the first～the second control model, realize steam the consumption figure equalization, favourable temperature control aspect cost of energy.

Thereafter, temperature controller 64 former states continue to carry out the temperature control based on second control model unchangeably, regulate so that internal temperature T sets value LV0 near target temperature.But, also consider in high-speed cruising thereafter, reduce for a certain reason from steam supply pressure as the steam boiler of thermal source, in only the temperature control of steam boiler, can't keep the situation of target temperature as thermal source.For such state of affairs, in the present embodiment, the term of execution of the temperature control of second control model, when the internal temperature T of actual measurement departs from objectives near the desired temperature LV0 scope, by carrying out the temperature control of the 3rd control model of comparing the effect degree that has improved electric heater 44 with second control model, can control near target temperature setting value LV0.

Such internal temperature T is reduced among the above-mentioned identical treatment step ST008, by judging that whether the condition B that is made up of above-mentioned two conditions becomes Rob Roy to carry out, and is programmed in advance: set up the temperature control of carrying out above-mentioned the 3rd control model according to the side in two conditions of condition B; In addition, the temperature control of all being false and carrying out second control model once more according to two conditions of condition B.

Condition as the side of such condition B, the control model of carrying out be not first control model (promptly, sign A is an off status), and the internal temperature T of actual measurement does not reach as the threshold value LV2 of above-mentioned second threshold value (promptly, near the scope of desired temperature LV0 departs from objectives), this second threshold value is to consider that vapour pressure is set at the value than low several ℃ of target temperature setting value LV0, in addition, condition as the opposing party, the control model of carrying out be the 3rd control model (promptly, mark B is for opening state), and the internal temperature T of actual measurement surpasses as the threshold value LV3 of above-mentioned the 3rd threshold value (promptly, near the desired temperature LV0 scope does not depart from objectives), the 3rd threshold value is to consider that the temperature regime (rapid temperature rises) after the recovery of vapour pressure is set at than high several ℃ of target temperature setting value LV0.

Even it is no problem to switch on the function by such control model, but, in embodiment more suitably, in order to prevent to follow the temperature of moment to reduce, frequently switch to each control model, temperature control becomes unstable, be further used as the condition of carrying out the 3rd control model, if do not reach above-mentioned threshold value LV2 state continuance D1 specified time limit, and as not carrying out from the condition of the 3rd control model to the switching of second control model, if surpass state discontented specified time limit of the D2 (in other words, carrying out switching) of above-mentioned threshold value LV3 in the moment that reaches D2 specified time limit.For these threshold values LV1～LV3 and become criterion during D1～D2, all set independently by setting apparatus 70 and other parameters, be stored in advance in master controller 52, the temperature controller 64 as the data storage of control program.

When carrying out the temperature control of second control model, when for example supply vapour pressure from steam boiler reduces for a certain reason, when internal temperature T does not reach state continuance D2 specified time limit of threshold value LV2, in temperature controller 64, in the judgement of treatment step ST008, the condition of a side among the condition B, promptly " control model of carrying out is not first control model, and the internal temperature T of actual measurement do not reach consider that vapour pressure is set at the threshold value LV2 than low several ℃ of target temperature setting value LV0 " set up.Therefore,, the inter-process sign B of the executing state of expression the 3rd control model is opened, carry out the temperature control (ST011) of the 3rd control model of comparing the effect degree that improves electric heater 44 with second control model simultaneously to treatment step ST011 branch.Thus, the aperture of temperature controller 64 decision steam control valves 40 is full-gear almost, the signal that output is corresponding, do not reach under the situation of threshold value LV0 at internal temperature T simultaneously, decision electric heater 44 in addition, is reaching threshold value LV0 or is surpassing under its situation for opening state, decision electric heater 44 is an off status, the signal S11 that output is corresponding.

Thereafter, the processing of temperature controller 64 turns back to above-mentioned treatment step ST007, carry out periodically once more treatment step ST007 temperature control instruction S4 supervision and as the ST008 of the determination processing step of control model.In treatment step ST008, owing to satisfied described the opposing party's of condition B condition, promptly " control model of carrying out is the 3rd control model; and the internal temperature T of actual measurement surpass threshold value LV3 (more exactly; the state that surpasses threshold value LV3 continue regulation during D3) " condition, so condition B sets up, to treatment step ST011 branch, continue to carry out the temperature control of the 3rd control model by once more.

Thereafter, when the reduction of supplying with vapour pressure recovers, supply with and during the steam of originally the same supply pressure, in the temperature control of the 3rd control model that is the present state of carrying out, because the steam control valve is a full-gear, so get excessively relatively from the air heat quantitative change of steam radiator 42, the internal temperature T of hothouse 14 surpasses target temperature setting value LV0 and rises rapidly.Its result becomes internal temperature T and surpasses the state that is higher than target temperature setting value LV0 pre-set threshold LV3, soon, surpasses state continuance D2 specified time limit of such threshold value LV3.Thus, temperature controller 64 is in the determination processing of treatment step ST008, and condition B is false, the result, and this is branched off into treatment step ST010, carries out the temperature control of second control model.Thus, by once more the effect degree of electric heater 44 be suppressed to zero or its near be worth, and the aperture of decision and adjusting steam control valve 40 is eliminated the temperature control for the temperature deviation of setting value LV0, thus, suppress the air heat amount, make internal temperature T then reduction, realize keeping the temperature control of target temperature setting value LV0.

Then, by from the signal of warp thread line-breakage sensor not shown on the device of sizing machine for warp yarn, from the input of the signal S3 of stop button 56, master controller 52 selects signal S7 and temperature control instruction S4 to be output as off status CRANK PULSES S6, speed respectively in order to end the operation of device of sizing machine for warp yarn.Thus, walking control part 57 slows down and stops the warp thread walking, simultaneously, temperature controller 64 as mentioned above, accompaniment signal S4 is closed, and the determination processing by treatment step ST007 enters into treatment step ST005, and making inter-process sign A, B all is off status, finish temperature control simultaneously, finish a series of about temperature controlled processing for target temperature setting value LV0.

Here, use Fig. 4 that actual temperature controlled situation is described.In Fig. 4, with the time (constantly t) be transverse axis, illustrate control model situation as the operation conditions of the output situation of coming signal S4, the signal S6～S7 of the control signal of autonomous controller 52, device of sizing machine for warp yarn and temperature controller 64 execution, follow temperature controlled for steam control valve 40 the aperture amount and the value of the internal temperature T of the hothouse 14 of the running-active status of electric heater 44, actual measurement.

The operator is as the process that makes the device of sizing machine for warp yarn operation, at first at moment t1 operation preheating button 53, master controller 52 is by being output as out state to temperature control instruction S4, temperature controller 64 is branched off into treatment step ST003 as this processing according to the flow process of Fig. 3, carries out the temperature control of second control model.In this embodiment, as second control model, electric heater 44 is failure to actuate fully, only carries out temperature control by steam radiator 42.But, because the internal temperature T of hothouse 14 is almost room temperature state P0, be in the situation of wide desired temperature LV0, so temperature controller 64 instructions are full-gear (aperture 100%) for the aperture amount command signal S10 of steam control valve 40 immediately, supply with steam to steam radiator 42, therefore, internal temperature T rises from room temperature state P0.Under this state, device of sizing machine for warp yarn still is in halted state, and the warp thread of starching is not walked and is in static state.Thereafter, but the operator is by operating low cruise button 54 at the moment of the temperature P1 that reaches low cruise t2, master controller 52 is because output run signal S6 is for opening state, institute is so that device of sizing machine for warp yarn enters the low cruise state, because the action of walking control part 57, the warp thread of starching is walked with low speed, on the other hand, in temperature controller 64, be in the state that the aperture instruction that makes steam control valve 40 maintains full-gear (100%), internal temperature T rises to target temperature setting value LV0.

Then, the operator is in order to begin high-speed cruising, at moment t3 operation high-speed cruising button 55, master controller 52 selects signal S7 for opening state by output speed, and the warp thread of the starching of walking slowly quickens walking to high-speed setting value, finally with this speed walking, simultaneously, in temperature controller 64, follow the judgement of treatment step ST002, enter into treatment step ST006, carry out the temperature control of first control model of comparing the effect degree that increases electric heater 44 with second control model.About first control model, as mentioned above, signal S11 is exported as common maximum, electric heater 44 is made as normally open (output is more than 100%), simultaneously, the aperture of adjusting steam control valve 40 is instructed and is eliminated the deviation that sets value LV0 for target temperature, is P3 at internal temperature T, be in the moment t3 of the situation of wide desired temperature LV0, aperture amount instruction S10 still indicates full-gear (100%).By carrying out the temperature control of the first such control model, the rising degree of the internal temperature T of hothouse 14 becomes rapid with comparing before control model is switched.

Thereafter, when being the value of miss the mark desired temperature LV0 at moment t4, reach decision for than low several ℃ of target temperature setting value LV0 (near) threshold value LV1 the time, temperature controller 64 is by the judgement of treatment step ST008, be branched off into treatment step ST010, carry out the temperature control of second control model.In second control model, temperature controller 64 as mentioned above, signal S11 is exported as common maximum, make electric heater 44 be normal off status (output 0%), the aperture amount instruction S10 that regulates steam control valve 40 eliminates the deviation that sets value LV0 for target temperature, so the aperture amount of valve instruction S10 is along with reducing gradually near target temperature setting value LV0, reach target temperature setting value LV0 at moment t5, thereafter, decision and the aperture of regulating steam control valve 40, to keep target temperature setting value LV0, regulate by repeating such action.In addition, in Fig. 4, the internal temperature T of the hothouse 14 of (with identical before, when continuing to carry out the temperature control of second control model) makes with dashed lines illustrate as a reference when not switching to second control model as the present invention.

Like this, temperature controller 64 is when the beginning high-speed cruising, carry out the temperature control that improves first control model of the effect degree of electric heater 44 in the caloric value, thereafter, internal temperature T reaches near the scope the target temperature setting value LV0, thus, carry out the temperature control of second control model, so when high-speed cruising begins, can make the internal temperature of hothouse reach near the position of target temperature setting value LV0 rapidly, the moisture rate of the dry warp thread after high-speed cruising just can having been begun remains on wishes state, so the steady quality of warp thread bundle is also stable as the operation of the loom in the weaving operation of back operation.And, so promptly reach target temperature setting value LV0 near the time, temperature controller 64 is by carrying out the temperature control of second control model, by the first～the second control model, all the time effectively utilize the steam energy, so the vapor volume equalization that steam boiler is supplied with can suppress all cost of energy.

At moment T6 thereafter, when the reduction of the vapour pressure of supplying with for a certain reason, the internal temperature T that the vapor volume of supplying with reduces hothouse 14 reduces gradually, even making the aperture amount instruction S10 of steam control valve 40 is that full-gear (100%) temperature also further reduces, the result is lower than threshold value LV2 at moment t7.Therefore, at such state continuance during the moment t8 of D1, temperature controller 64 is set up as condition B by the judgement of treatment step ST008, carries out the temperature control of the 3rd big control model of the effect degree of comparing electric heater 44 with second control model.In the 3rd control model, as mentioned above, carry out following temperature control: decision maintains full-gear (100%) with the aperture amount instruction S10 of steam control valve 40, and the corresponding signal of output, simultaneously under the state of internal temperature T miss the mark desired temperature LV0, in order to make electric heater 44 become out state (100% output state) maximum ground output signal S11, in addition, according to having reached target temperature setting value LV0, become off status (0% output state) minimum of a value ground output signal S11 in order to make electric heater 44.By the interrupted action (heating) of such electric heater 44, supply with before steam reduces eliminating thereafter, LV0 is the center with the target temperature setting value, be similar to that triangular wave changes like that, control near the temperature of so-called target temperature setting value LV0.Temperature controller 64 is before the reduction internal temperature of eliminating vapour pressure rises, and condition B sets up, and its result continues to carry out the temperature control of the 3rd control model.

Thereafter, when the reduction of eliminating vapour pressure at moment t9 returned to common vapour pressure, the vapor volume of supplying with to steam radiator 42 increased to original state.Its result, internal temperature T after reaching target temperature setting value LV0, closing electric heater 44, follow aperture amount instruction S10 to be in full-gear internal temperature T and further continue to rise from the state that clips target temperature setting value LV0 and change up and down then rise.Then, after reaching threshold value LV3, moment t10 internal temperature T also further rises, moment t11 at D2 during moment t10 process, temperature controller 64 is in treatment step ST008, condition B is false to treatment step ST010 branch, carries out the temperature control of second control model thus once more.Thus, temperature controller 64 carries out following temperature control: minimum of a value ground output signal S11 makes electric heater 44 become normally closed (output state 0%), simultaneously, because begin to carry out aperture amount instruction S10 with steam control valve 40 from common full-gear (output 100%) to lowering the action that aperture makes internal temperature T regulate near the direction of target temperature setting value LV0, so the internal temperature T of hothouse 14 transfers to lower, along with the process of time is eliminated the temperature deviation that sets value LV0 for target temperature.Afterwards, control, just do not continue to carry out the temperature control of second control model because the temperature that the reduction of vapour pressure causes reduces as long as do not take place once more, the internal temperature T of hothouse 14 maintains target temperature setting value LV0 by regulating the aperture amount of steam control valve 40.

Here, in the temperature control of first control model and second control model, regulate the aperture amount command value of steam control valve 40 and eliminate the temperature deviation Δ T that sets value LV0 for target temperature, calculating about so temperature controlled operational ton (controlled quentity controlled variable), in more detail, can be undertaken by PID (PID) computing based on departure.In addition, can take different control modes according to the kind of steam control valve.In the first above-mentioned embodiment, the operational ton that obtains by the PID computing is exported as analog signal, the electric current corresponding with operational ton exported by current feedback circuit 66, continuously control valve openings.But be not limited thereto, for example also can constitute the steam control valve, according to realizing with operational ton time corresponding ratio (so-called dutycycle) driven opening valve as open/close time scale with open and close valve.In addition, each ride gain of the PID of using in such PID computing determines in advance.In addition, as the control beyond the above-mentioned PID control, temperature changes up and down, but during as the action by the 3rd control model control electric heater 44, according to and the comparative result of threshold value (target temperature setting value) open and close valve is opened and closed, do not control like that away near the value the target temperature setting value.

About above-mentioned first control model, can followingly be out of shape.About the electric governor 67 of conduct for the heating adjuster of electric heater 44, in above-mentioned first embodiment, carry out the bilateral output of 100% output, 0% output, but if such switch drive, the electric governor that can replace the high price that is made of semiconductor element adopts cheap electromagnetism shutter.In above-mentioned the 3rd control model, action control for electric heater 44, comparative result according to target temperature setting value LV0 and internal temperature T, carry out switch control, but, as by other control model to the control of steam control valve, can simulate output and carry out the operational ton of generation such as PID computing (for example export 50%, 60% such), the electric power of supply and instruction correspondence.

In above-mentioned first control model, aperture amount about valve, temperature controller 64 is carried out the computing of heat operational ton periodically according to the temperature deviation Δ T for target temperature setting value LV0, along with temperature deviation is eliminated, reduce the output of operational ton, but, also can often use the heat operational ton that determines immediately after the control model switching, eliminate temperature deviation.Such mode is also contained in the aperture amount that determines valve on the direction of eliminating temperature deviation of the present invention, and with its output.

In the above-described embodiment, it is the example that uses electric heater as heat-generating units, but so long as it is hot and that the adjustable heat-generating units of heat takes place is all passable to have speed, as the heat-generating units beyond the electric heater, consider that burning flammable fluid (for example flammable oil, imflammable gas etc.) produces the fuel element of heat etc.But, about using first embodiment of electric heater, so because hot good stable through yarn quality of being suitable for of speed, and compare with existing apparatus, because can suppress the consumption figure of the high electric power of energy unit price, so can suppress the cost of energy of device of sizing machine for warp yarn operation.

In addition, after the beginning high-speed cruising is carried out the temperature control of second control model, in above-mentioned first embodiment, for the reduction of the internal temperature T that follows vapour pressure to reduce, carry out the temperature control of the 3rd control model, still, if compare the control model of the effect degree that increases the electric heater 44 in the caloric value with second control model, which kind of mode can, for example also can replace the 3rd control model, carry out the temperature control of first control model of when high-speed cruising begins, carrying out.

In above-mentioned first embodiment, by operation preheating button 53, carry out the temperature control of second control model for the time being, when beginning, carries out high-speed cruising the temperature control of first control model, but, also can carry out first control model immediately by operation preheating button 53 for internal temperature T is raise sharp, execution as first control model begins period, when being not limited to high-speed cruising and beginning.

In above-mentioned first embodiment, in beginning during high-speed cruising,, switch to other control model according to the internal temperature of detected hothouse when first control model switches to second control model, but, not necessarily use detected temperatures about the timing of switching.For example, can also according to temperature when beginning control for the temperature deviation of target temperature setting value LV0 and the relation of pass through each temperature rising characteristic that electric heater 44 and steam boiler 40 predict that obtains according to up to now experience, prediction reaches the time of target temperature setting value LV0, on the other hand, measurement is from the temperature elapsed time in when beginning control, reach above-mentioned predicted time according to the elapsed time, switch to the temperature control of second control model.

About this point, can realize to the processing of ST024 by the treatment step ST002 among Fig. 3 is replaced into ST020 shown in Figure 5 to the processing of ST008, this embodiment is specified below as second embodiment.By the treatment step ST002 of execution graph 3, when being " yes ", be branched off into treatment step ST020 shown in Figure 5 in result of determination.Specifically, from signal S5, read the internal temperature T (ST020) of hothouse, simultaneously, calculate temperature deviation Δ T, determine the predicted time D3 (ST021) corresponding with temperature deviation Δ T for target temperature setting value LV0 from temperature sensor 16.About predicted time D3, can be temperature (room temperature) on every side, air pressure on every side, the temperature deviation Δ T of present moment etc. as parameter, use the function of deriving predicted time D3 to determine, also can from the data group that basis experience up to now obtains, read corresponding data group.In temperature controller 64, store these functions or data group extractedly in advance according to above-mentioned parameter, in the process of carrying out this treatment step ST021, according to these decision predicted times D3, enter into next treatment step, make the inter-process sign A of the executing state of expression first control model become out state, simultaneously, beginning enters into next step according to the temperature control (ST022) of first control model, carries out and judges the processing (ST023) of whether not closing output temperature control instruction S4.Suppose, close for a certain reason when having exported temperature control instruction S4 at master controller 52, identical during with treatment step ST004 among above-mentioned Fig. 3, enter into treatment step ST005, making inter-process sign A, B all is off status, simultaneously, make the temperature control model become off status, finish a series of temperature control.

Relative therewith, at temperature control instruction S4 when opening state, promptly, when the result of determination among the treatment step ST023 is " NO ", enter into next treatment step, accumulation begins elapsed time from carrying out first control model, judges simultaneously whether this elapsed time passed through stipulated time D3 (ST024).Here,, then turn back to previous treatment step ST023, carry out the supervision (ST023) of temperature control instruction S4 and the process determination processing (ST024) of stipulated time D3 periodically if do not pass through stipulated time D3.Then,, enter into next and handle, make sign A become off status (ST025), finally enter into control model determination processing (ST008) as the inter-process sign according to having passed through stipulated time D3 from beginning to carry out first control model.In treatment step ST008, because the inter-process sign A has been in off status, simultaneously, condition A, condition B neither set up, so the treatment step ST010 branch in Fig. 3 carries out the temperature control of second control model.Thereafter identical with above-mentioned first embodiment.

According to the second above-mentioned embodiment, after the temperature control of first control model when the beginning high-speed cruising begins, measure the elapsed time, surpass predetermined predicted time D3 according to this elapsed time simultaneously, switch to second control model, so identical with above-mentioned first embodiment, can make the internal temperature T of hothouse 14 reach target temperature setting value LV0 rapidly, the quality of warp thread bundle compared with prior art improves.

In above-mentioned two embodiment, temperature controller 64 carries out the switching of control model automatically according to the control signal or the detected internal temperature T that are produced by master controller, still, and also can manual switchover.The 3rd embodiment shown below be the operator when high-speed cruising begins, perhaps according to the situation of the internal temperature T of hothouse, the embodiment of the control model that selection will be carried out.

In control block diagram shown in Figure 6, to compare with the temperature controller 64 of Fig. 2, difference is that input comes the control model switching signal S14～S16 of the change-over switch of free rotary switch formation.In addition, temperature controller 64 can selectivity be carried out first～the 3rd control model according to the input of signal S14～S16.On the other hand, in setting apparatus 70, available numerical value or figure show the internal temperature T of hothouse 14.And, the operator is when the beginning high-speed cruising, at first pass through the handover operation input signal S14 of change-over switch 80, make temperature controller 64 carry out the temperature control of first control model, after high-speed cruising begins, according to passed through regulation during or according to the situation of the internal temperature T that on setting apparatus 70, shows, by the handover operation input signal S15 of change-over switch 80, make temperature controller 64 carry out the temperature control of second control model.

In addition, for target temperature setting value LV0, consider the reduction and the recovery of vapour pressure, in advance by setting apparatus 70 setting threshold LV2, threshold value LV3, temperature controller 64 can be exported alarm signal S12 according to each comparative result of internal temperature T and threshold value LV2～LV3.This alarm signal S12 offers master controller 52, and master controller 52 can be lighted the warning light 72 that is connected with its efferent by the generation of signal S12.Then, the operator is according to the alarm that is in operation and takes place, the alarm that produces for internal temperature according to the judgements such as temperature demonstration of setting apparatus 70 is reduced by vapour pressure or which vapour pressure recovered and caused, corresponding judged result handover operation switching manipulation switch 80, thus, can optionally carry out the temperature control of the 3rd control model or the temperature control of second control model.

For the foregoing description, consider following variation.About among above-mentioned first embodiment as the temperature of the basis of switching controls pattern, preferably adopt the internal temperature that in hothouse, directly detects, but also can use measured value or controlling value with strong other of internal temperature relevance, infer the hothouse temperature inside indirectly, for example, when the temperature with burst reduces control as object, consider to replace the internal temperature of hothouse to use the steam temperature of supplying with from vapor source as measured value.

Can also replace using the temperature of mensuration,,, detect the variations in temperature of burst indirectly for example according to the valve opening command value of conduct for the operational ton signal of steam control valve according to the controlling value of having reacted detected temperatures.More particularly, consider that the temperature that detects burst reduces, temperature rises (recovery) according to the aperture command value of the scope output steam control valve that exceeds common hypothesis.

The invention is not restricted to the foregoing description, only otherwise break away from the purport of claim, can carry out various distortion.

In the device of sizing machine for warp yarn that the present invention uses in fiber industry,, then can use widely if in its drying process, have hot-air drying device.

Claims

1. the temperature-controlled process of a hot-air drying device that uses in device of sizing machine for warp yarn is characterized in that,

Have:

Have the hothouse of the circulating path of air-flow along the walking path of moistening warp thread,

In described hothouse, send into the pressure fan of air,

Send into for heating described hothouse the configuration of described air, by the heat regulator adjustable air add heat air heater and

To the temperature controller of each heat regulator quantity of heat given up operation signal,

In described a plurality of air heaters, comprise by regulating the steam radiator of supplying with vapor volume as the steam control valve of heat regulator, and regulate caloric value by corresponding heat regulator with the different heat-generating units of described steam radiator,

Programme out at least internal temperature of detection hothouse of described temperature controller is output as to each heat regulator and makes first control model of detected temperatures near the heat operation signal of target temperature setting value; Compare second control model of the heat operation signal of the effect degree that suppresses the described heat-generating units in the caloric value with described first control model with output,

Described temperature controller is carried out a certain in described two kinds of control models when hot-air drying device moves, simultaneously, because the internal temperature of hothouse becomes the state of regulation, carry out described another kind of control model.

2. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 1 is characterized in that,

Described temperature controller is carried out described first control model when device of sizing machine for warp yarn begins high-speed cruising, because detected temperatures surpasses near the first threshold of decision described target temperature setting value, carry out described second control model thereafter.

3. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 1 is characterized in that,

Described temperature controller is carried out described first control model when device of sizing machine for warp yarn begins high-speed cruising, and owing to having passed through the stipulated time that is predetermined time of advent of considering target temperature setting value, carries out described second control model.

4. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 1 is characterized in that,

Further the 3rd control model of comparing the heat operation signal of the effect degree that has increased the described heat-generating units in the caloric value with described second control model is exported in programming in described temperature controller,

Described temperature controller is after having carried out second control model of carrying out after described first control model of execution, further because detected temperatures is the value that does not reach described target temperature setting value, do not reach near the state of second threshold value of the decision target temperature setting value, carry out described the 3rd control model.

5. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 4 is characterized in that,

Described temperature controller after having carried out described second control model since detected temperatures do not reach described decision second threshold value state continuance specified time limit, carry out described the 3rd control model.

6. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 4 is characterized in that,

In described temperature controller, as the 3rd control model, the control that programming is following: the decision of the aperture amount of described steam control valve is maximum or near the value it, decision simultaneously with for to make described detected temperatures near the relevant value of the caloric value from described heat-generating units of target temperature, export the heat operation signal of correspondence.

7. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 4 is characterized in that,

Described temperature controller further because detected temperatures is the value that surpasses described target temperature setting value, surpasses near the 3rd threshold value of the decision target temperature setting value after having carried out described the 3rd control model, carry out second control model once more.

8. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 7 is characterized in that,

Described temperature controller after having carried out described the 3rd control model since detected temperatures surpass described decision the 3rd threshold value state continuance specified time limit, carry out described second control model.

9. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 1 is characterized in that,

Described temperature controller is after having carried out second control model of carrying out after described first control model of execution, because detected temperatures is not for reaching the value of described target temperature setting value, for not reaching near the state of second threshold value of the decision target temperature setting value, carry out described first control model.

10. according to the temperature-controlled process of any one described hot-air drying device that in device of sizing machine for warp yarn, uses in the claim 1,2,3,9, it is characterized in that,

In described temperature controller, as described first control model, the control that programming is following: with relevant value decision is maximum or near the value it from the caloric value of heat-generating units, and decision is exported corresponding heat operation signal as the aperture amount of the described steam control valve of heat operation signal on the direction of eliminating the deviation that sets value for described target temperature; Simultaneously, as described second control model, the control that programming is following: with relevant value decision is a near value zero or it from the caloric value of described heat-generating units, and the aperture amount of the described steam control valve of decision on the direction of eliminating the deviation that sets value for described target temperature, each heat operation signal that output is corresponding.

11. the temperature-controlled process of the hot-air drying device that uses in device of sizing machine for warp yarn according to claim 1 is characterized in that,

Described heat-generating units is by constituting via the electric heater that can regulate caloric value as the electric power controller of heat regulator.