WO2015178470A1 - Heating device and tilling device - Google Patents

Abstract

Provided is a heating device (100) comprising a plurality of glass tubes (10) and a resistor (12) that is provided around the glass tubes (10). Electricity is made to flow through the resistor (12) so that said resistor (12) generates heat. A water vapor generation unit (80) that uses the heat of the resistor (12) to heat water and generate water vapor so that said water vapor is guided into the glass tubes is provided to the interior of the glass tubes (10). Water is heated within the glass tubes (10) and superheated steam is generated. Also provided is a tilling device (300) that comprises the heating device (100) and a tilling unit that includes a tilling tine (310). The tilling tine (310) comprises a passage (324) through which the superheated water vapor that is generated by the heating device (100) passes and a discharge port (322) that discharges the superheated water vapor.

Description

Heating device and tillage device

The present invention relates to a heating device and a tilling device having a heat generation function.

Conventionally, as a method for generating superheated steam, a method of mixing air or combustion gas heated to steam (see Patent Documents 1 and 2) or a method of heating steam by electromagnetic induction (see Patent Documents 3 and 4) has been proposed. Has been.

JP 2004-069168 A JP 2000-74307 A JP 2003-297537 A JP 2006-071180 A

According to the method of manufacturing by mixing heated air or combustion gas with steam, means for heating air is required, and there is a limit to downsizing of the apparatus. In addition, for heating by electromagnetic induction or the like, it is necessary to secure a space for the oscillator, and the cost of the electromagnetic induction device such as the oscillator is high, raising the manufacturing cost.

The present invention is to provide a heating device and a tilling device that are energy saving, downsized and simplified.

The heating device of the present invention is
A plurality of glass tubes;
A resistor provided around the glass tube;
By causing electricity to flow through the resistor, the resistor generates heat,
In order to introduce into the glass tube, a water vapor generating part that heats water using heat of the resistor to generate water vapor is included.

According to the present invention, water vapor generated by the water vapor generating unit is supplied to the glass tube, and superheated water vapor can be generated in the glass tube heated by the resistor. Further, since the heat of the resistor is used in generating the water vapor, a boiler or the like for generating water vapor is not necessary, and the size can be reduced.

Further, according to the heating device of the present invention, the energy loss is small because the resistor that generates heat is provided in an integrated state with the glass tube. Therefore, energy saving can be achieved. Further, since it is not necessary to provide special equipment such as a pressure vessel for heating, simplification and downsizing can be achieved, and cost can be reduced.

In the present invention,
A plurality of the glass tubes may be provided, and the water vapor generating unit may be provided surrounded by the plurality of glass tubes. ADVANTAGE OF THE INVENTION According to this invention, the heat | fever of a resistor can be efficiently supplied to a water vapor | steam production | generation part.

In the present invention, the plurality of glass tubes are provided connected in series by a connecting tube, and water vapor can sequentially pass through each glass tube. ADVANTAGE OF THE INVENTION According to this invention, the length of the channel | path which produces | generates superheated steam can be ensured, and it becomes easy to control the temperature etc. of superheated steam.

In the present invention, the water vapor generation part and the glass tube may be provided in a container whose inside is in a vacuum state. According to this, the heat loss of the heat generated by the resistor can be suppressed.

In the present invention,
A current measuring unit for measuring a current value of a current flowing through the resistor;
A temperature measuring unit for measuring the temperature of the glass tube;
A storage unit storing temperature rising program data based on the size of the resistor;
A processing unit for deriving the state of the glass tube based on the current value measured by the current measuring unit and the temperature of the glass tube measured by the temperature measuring unit with reference to the temperature raising program data Can be included.

According to the present invention, since the temperature rise program data based on the size of the resistor is included, it is not necessary to create a separate processing device for each size of the resistor, and the versatility of the processing device itself can be improved. .

In addition, when a predetermined current flows and a predetermined temperature does not rise, it can be recognized that the temperature measuring unit is damaged. Therefore, it is easy to check the damaged state of the temperature measuring unit.

In the present invention, the storage unit may have relational data between the resistance value of the resistor and the size of the resistor. According to the present invention, the processing device can recognize the size of the resistor from the resistance value of the resistor, and the input operation of the size of the resistor can be omitted.

In the present invention, the temperature measuring unit may be a thermocouple. Maintenance can be easily performed by using a thermocouple.

The tillage device of the present invention comprises the heating device of the present invention,
Including a tilling part including a tilling nail,
The tillage claw includes a passage through which superheated steam generated by the heating device passes and a discharge port for discharging superheated steam.

According to the present invention, superheated water vapor can be supplied into the soil from the outlet of the tillage nail, which is useful for controlling parasitic nematodes in the soil.

In the present invention,
The tilling nail is provided with a projecting portion for pushing the soil outside on the side,
The said discharge outlet can be provided in the back side of the said overhang | projection part with respect to the advancing direction at the time of tillage.

According to the present invention, the soil is pushed out by the overhanging portion, and it becomes easy to supply superheated steam into the soil.

In the present invention, a heater for heating the tillage nail can be provided. According to this, it can suppress that the temperature of superheated steam falls in a tilling nail.

It is a figure which shows the structural example of a heating apparatus typically. It is a perspective view which shows the part of a heating apparatus typically. It is a figure for demonstrating the arrangement | sequence of a heating apparatus. It is a figure for demonstrating the layout of the electrode which concerns on a modification. It is a figure which shows typically the heating apparatus which concerns on a modification. It is a figure which shows the structural example of a heating system typically. It is a figure which shows the functional block of a heating system typically. It is a figure which shows typically the structural example of the heating system which concerns on a modification. It is a flowchart of the processing flow of a heating system. (A) is a figure which shows a heating apparatus typically in the aspect except a vacuum vessel, (B) is a figure which shows the cross section of a heating apparatus typically. It is a figure which shows the cross section of a heating apparatus typically. It is a figure which shows a tilling nail typically and is a figure for demonstrating the flow path of the superheated steam in the inside of a tilling nail. It is a figure which shows typically the tractor to which the tilling device was attached.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1. As shown in FIG. 1 and FIG. 2, the heating device 100 includes a plurality of glass tubes 10, a resistor 12 provided around each of the glass tubes 10, and a glass tube 10. A water vapor generation unit 80 that generates water vapor by heating water using the heat of the resistor is included. Wiring for supplying electricity is connected to the resistor 12, and the resistor 12 generates heat when electricity is supplied to the resistor 12.

The resistor 12 can be formed of a film made of a conductive material. As the material of the conductive material, a metal such as copper or a metal acid additive such as ITO can be applied.

The glass body 10 is provided with a plurality of electrodes (for example, two electrodes) 14 a and 14 b for allowing a current to flow through the resistor 12. The material of the glass body 10 is not specifically limited, A well-known thing can be applied.

The plurality of glass tubes 10 are connected and connected by a connecting portion 16. The connection part 16 can be comprised by the pipe | tube (for example, metal pipe) which consists of electrically conductive materials, and the pipe | tube which consists of insulating materials. Examples of the material of the tube made of a conductive material include an alloy of nickel and chromium, carbon fiber, and the like. Examples of the material of the tube made of an insulating material include ceramic. The connecting portion 16 may be U-shaped or linear, and the shape can be determined depending on how the glass tubes 10 are arranged.

The number of glass tubes 10 is not particularly limited, but is preferably 3 or more, for example, from the viewpoint of supplying heat to the steam generation unit 80. As an arrangement method of the glass tubes 10, as shown in FIG. 3, for example, the glass tubes 10 can be arranged in a circular shape, for example, a hole in a revolver-type pistol or a hole in a lotus root. The glass tubes 10 are preferably provided at equal intervals from the viewpoint of supplying heat to the water vapor generating unit 80. In FIG. 3, eight glass tubes 10-1 to 10-8 can be connected by connecting portions 16a and 16b. The connecting portion 16a connects the mouth on one side of the glass tube 10, and the connecting portion 16b connects the mouth on the other side of the glass tube 10. The glass tubes 10 may be arranged linearly as shown in FIG. Further, a plurality of rows of glass tubes 10 shown in FIG. 4 may be provided. The glass tubes 10 are connected in series in FIGS. 3 and 4, but may be connected in parallel.

One inlet of the connected glass tube 10 is connected to a water vapor generating unit 80 that generates water vapor. The water vapor generation unit 80 generates water vapor by heating water using the heat of the glass tube 10. The water vapor generation unit 80 can be configured by, for example, an evaporation chamber that receives the heat of the glass tube 10, and generates water vapor by supplying water into the evaporation chamber that is in a heated atmosphere that receives the heat of the glass tube 10. can do. As shown in FIG. 3, the water vapor generation unit 80 can be provided surrounded by a plurality of glass tubes 10. The glass tube 10 and the water vapor generating unit 80 can be accommodated in the vacuum vessel 90. Thereby, the heat generated in the glass tube 10 and the water vapor generating unit 80 is difficult to escape. As shown in FIG. 10, water is supplied to the water vapor generation unit 80 through a supply unit 74 for supplying water. You may connect a water tank (not shown) to the supply part 74 as needed. Moreover, the heating apparatus 100 is provided with a discharge unit 76 that discharges superheated steam. The water vapor generated by the water vapor generating unit 10 passes through the glass tube 10 and becomes superheated water vapor. The order in which the water vapor passes through the glass tube 10 is a glass tube that is next to the glass tube 10 as shown in FIG. The flow does not have to pass through 10. The length of one glass tube 10 can be 200 mm, for example.

Water can be supplied to the steam generation unit 80 by the water supply device 80. The water supply device 80 may be a device for supplying water from a tank storing water, a humidifier, a sprayer, or the like. The apparatus for supplying water may be a system that supplies water in the tank by an on-off valve, a system that uses a water pump, or a dripping device.

The resistor 12 provided around the glass tube 10 can be formed by forming a conductive film. The conductive film can be formed, for example, by sputtering, CVD, baking, or the like.

Around the glass tube 10, electrodes 14a and 14b for supplying electricity to the resistor 12 are provided. The shape of the electrodes 14a and 14b is not particularly limited as long as it can realize the function as an electrode, and can be provided in a straight line, for example. The electrodes 14a and 14b can be provided in a line on one side of the resistor 12 and on the side opposite to the one side. The electrodes 14a and 14b may be provided in a bowl shape on the glass tube 10, or may be provided along the longitudinal direction of the glass tube 10 as shown in FIG. The material of the electrodes 14a and 14b is not particularly limited as long as it can realize a function as an electrode, but can be made of a metal such as copper. A current is supplied from the power supply unit 40 to the electrodes 14a and 14b.

The electrodes 14 a and 14 b for supplying electricity to the resistor 12 may be provided on both sides of the resistor 12 for each glass tube 10. In addition, a plurality of glass tubes 10 are connected by a connecting portion 16 made of a metal tube, and adjacent resistors 12 are electrically connected by the connecting portion 16, thereby providing an electrode 14 a on the glass tube 10 at one end. Alternatively, an electrode 14b may be provided on the glass tube 10 at the other end so that a current flows. In this case, the resistors 12 of the plurality of glass tubes 10 substantially function as one heating element. Further, when the connection portion 16 is made of a metal tube, it is possible to play a role as a conduction portion for allowing electricity to flow from the power source to the resistor 12, in other words, from the connection portion 16.

As shown in FIGS. 6 to 8, the heating system 200 includes the above-described heating device, a temperature measuring unit 30 that measures the temperature of the glass tube 10, and a current measurement that measures the current value of the current flowing through the resistor 12. And a processing device 20 for deriving the state of the glass tube 10 based on the current value measured by the current measuring unit 32.

The temperature measuring unit 30 is not particularly limited as long as the temperature of the glass tube 10 can be measured, and can be configured by a thermocouple, for example. When the temperature measurement unit 30 is made of a thermocouple, the vicinity of the tip may be attached to an adhesive body (such as a seal body) and attached to the glass tube 30 through the adhesive body for ease of attachment. The temperature measurement unit 30 can be provided between the processing apparatus 20 and the amplifier A1.

The current measuring unit 32 is not particularly limited as long as it can measure the current flowing between the plurality of electrodes 14a and 14b, and a known one can be applied. The current measurement unit 32 can be provided between the processing device 20 and the amplifier A2.

The processing device 20 controls components such as the power supply unit 40, and determines the state of the glass tube 10 based on the current value measured by the current measuring unit 32 and the temperature of the glass tube 10 measured by the temperature measuring unit 30. To derive. The processing device 20 can be realized by a control circuit including a CPU, a ROM, a RAM, and the like. The processing device 20 may be realized by a plurality of control circuits.

The power supply unit 40 has a device that can be varied to, for example, around 0 to 400 V by a transformer or a semiconductor device that boosts or depresses a commercial frequency alternating current or direct current power supply.

The heating system 200 can further include the following components.

In the heating system 200, a temperature setting switch 52 and a temperature display lamp 54 are connected to the processing apparatus 20 via an external terminal connection part (for example, a photocoupler) 50. The temperature setting switch 52 is for changing the setting to the high temperature side or the low temperature side with respect to the set temperature of the glass tube 10. The temperature display lamp 54 is a lamp (for example, a light emitting diode) that displays the degree of temperature change by the temperature setting switch 52.

The AC / DC converter 44 converts an AC power supply of the power supply unit 40 into a DC power supply. The converted DC power supply path includes a path sent to the processing apparatus and a path sent to the DC / DC converter 46 and stepped up or down and sent to the processing apparatus 20.

The storage unit 60 stores relation data between the resistor 12 and the resistance value, temperature increase program data corresponding to the size of the resistor 12, correspondence data between the current value and the resistance value, correspondence between the current value and the temperature change. Related data, the time to rise to the specified temperature after turning on the power, the time to drop to the prescribed temperature after turning off the power, the maximum temperature reached after the power is turned off, the temperature that is damaged when the power is turned on Corresponding data between the data current value such as the time from power-on to breakage and the temperature at which the glass tube is heated is stored. The data stored in the storage unit 60 is basic data for deriving appropriate conditions for controlling the heating system 200 to increase the temperature. In particular, the temperature rise program data is given conditions for temperature rise in accordance with the size and thickness of the resistor 12, such as the size and thickness of the glass tube 10, and the time for current flow, A current value, a voltage value, or the like is set according to the current flowing time. The storage unit 60 can be configured by a known storage medium such as a hard disk, ROM, or RAM. The function of the storage unit 60 may be realized by a storage area in the processing device 20.

The display 62 is connected to the processing apparatus 20, and displays the surface temperature of the glass tube 10, the energizing current value of the glass tube 10, the breakage alarm of the glass tube 10, the disconnection alarm of the thermocouple 32, and the like. A known display device such as a touch panel display can be applied to the display.

The computer 64 is connected to the processing apparatus 20 and performs temperature correction of the basic set temperature, the glass tube type (thickness, shape, size, etc.), and the thermocouple circuit.

The transmission / reception unit 66 is connected to the processing device 20. The transmission / reception unit 66 transmits / receives information to / from the management terminal through a communication network such as the Internet. A known transmission / reception device can be applied to the transmission / reception unit 66.

The processing apparatus 20 outputs the control output of the solid state relay 42 via the amplifier A3, and controls the solid state relay 42. The solid state relay 42 turns on and off power to the resistor 12 of the power supply unit 40. Since the solid state relay 40 is equipped with the zero cross function, it is possible to reduce the noise of the power source and reduce the sound. The solid state relay 42 having a zero cross function recognizes the waveform of the power supply and can be turned on / off at 0V.

Although not shown, there may be a warning unit that warns of an abnormal state of the heating system itself (for example, an abnormal state of the temperature measurement unit) by light or sound.

As shown in FIG. 5, the heating system 200 may control a plurality of glass tubes 10 via the terminal 70.

3. Operation Turn on the power (S10). Next, setting data is read (S12). That is, the processing device 20 reads a temperature raising program based on the size of the glass tube 10. At this time, in the case of having correspondence data between the resistance value and the size of the resistor 12, the resistance value may be obtained after turning on the power to recognize the size of the resistor 12.

Next, the surface temperature of the glass tube 10 is measured (S14). At this time, the ambient temperature is also measured as necessary. Based on the initial surface temperature and, if necessary, the ambient environment temperature, voltage output data is calculated (S16). Before outputting the voltage, water is introduced from the water supply device 72 to the water vapor generating unit 80 to generate water vapor. The water vapor is introduced into the glass tube 10 and a voltage is output (S18). Next, the value of the current flowing through the resistor 12 is measured (S20), and if it is normal, the current continues to flow. For example, when the number of glass tubes 10 is eight and each glass tube 10 is connected by metal, current may continue to flow until the temperatures of the eight glass tubes 10 become the same.
After a predetermined time has elapsed, the surface temperature is measured (S22), and the voltage output is cut off when the water reaches the predetermined temperature and the water vapor introduced into the glass tube 10 is heated to generate a predetermined amount of superheated water vapor (S24). . This control will be specifically described. In the first glass tube 10, the temperature of the water vapor is increased to, for example, 100 ° C., and the temperature of the next glass tube 10 is increased to, for example, 150 ° C. It is good also as heating water vapor | steam as it passes, and finally producing | generating 300 degreeC water vapor | steam. Note that after the voltage output is cut off, the water supply from the water supply device 72 into the glass tube 10 is also stopped.

If the surface temperature does not reach the predetermined temperature after a predetermined time, the voltage output data is recalculated (S16) and the voltage is output again (S18). In order to keep the temperature constant, the elapse of a predetermined time after the voltage output is cut off is grasped by a timer (S26), and the surface temperature is measured after the elapse of the predetermined time (S22).

When the current value flowing through the resistor 12 is measured (S20) and the energized current value indicates an abnormal value, the voltage output is stopped (S28). Also, when an abnormality occurs in the temperature measuring unit 30 (S30), the voltage output is stopped (S28).

When the temperature measured by the temperature measuring unit 30 does not become the temperature as the temperature raising program despite the predetermined current flowing, it is recognized that the temperature measuring unit 30 has failed. In this case, the failure information can be transmitted to the management terminal by the transmission / reception unit 66.

When it is confirmed by visual observation that the resistor 12 is not damaged, the size of the glass tube 10 may be recognized based on the resistance value. That is, if the thickness of the resistor is the same, the size of the resistor can be recognized from the resistance value of the resistor.

Also, if the size of the resistor 12 is known, the damage status of the resistor 12 can be confirmed by confirming the resistance value.

The program that causes the computer of the processing device 20 to execute these processes can be stored in a ROM or the like that constitutes the processing device 20.

4). Tilling Device A tilling device 300 according to the embodiment includes the heating device 100 and a tilling claw 310 as shown in FIG.

As shown in FIGS. 12 and 13, the tilling claw 310 is supplied with superheated steam generated by the heating device 100 and includes a passage 324 and a discharge port 322 for discharging superheated steam. The discharge port 322 can be provided on the side of the tilling claw 310. A plurality of (for example, four) discharge ports 322 may be provided in one tilling nail 310. The tilling nail 310 can be provided with a projecting portion 330 on the side to push the soil outward. The discharge port 322 can be provided on the rear side of the overhang portion 330 with respect to the traveling direction during tillage. As a result, the soil is pushed out by the overhanging portion 330 at the time of tillage, a space is generated in the soil, and it becomes easy to supply superheated steam into the soil. The overhanging portion 330 can be configured to be a curved surface that bends outward with a radius of 50 mm, for example. Further, the tilling claw 310 can have a spindle shape as viewed from above.

The tilling claw 310 can be provided with a protective member 332 for protecting the tilling claw 310 from the front to the back in the traveling direction. The protection member 332 can be fitted to the tilling claw 310 and fixed by a known fixing method as necessary. When the protection member 332 is provided, the overhanging portion 330 can be provided at the end portion of the protection member 332. By providing a predetermined gap between the tilling claw 310 and the protection member 332, a hollow state is obtained, and heat loss of superheated steam can be suppressed. In order to prevent the heat of the superheated steam from escaping, the tilling claw 310 can be configured with a heat insulating material as a part thereof.

Between the heating device 100 and the tilling nail 310, a heat retaining pressure unit 340 for retaining and pressurizing superheated steam can be provided. The heat retaining and pressurizing unit 340 can be configured by being provided with a heater for heating the superheated steam and a compressor for increasing the pressure.

A heater (not shown) for heating the tilling claw 310 can also be provided. Thereby, the heat loss of the superheated steam supplied to the tilling claw 310 can be reduced, and the superheated steam can be discharged.

The tillage device 300 can be connected to a vehicle body 350 such as a tractor as shown in FIG. 14, or can be applied to various farm equipment. The tillage device 300 is useful for controlling parasitic nematodes. Specifically, parasitic nematodes can be controlled by supplying superheated steam from the tilling claws 310 into the soil.
5. Operational effects Next, operational effects of the present embodiment will be described.

(1) There is a technique for generating superheated steam by generating steam in a heating container and performing pressure heating in the heating container. When superheated steam is generated by this method, it is heated to the boiling point in a heating vessel. By raising the internal pressure of the heating vessel and raising the boiling point temperature, the temperature of the steam is raised to 100 ° C. or higher. The method is generally taken.

When trying to make superheated steam by this method, the energy to heat the raw water to the boiling point in the heating vessel is large. In this case, since a pressure vessel for increasing the pressure is required, the equipment is large and expensive, and maintenance management is also required every predetermined period (for example, every year), which increases the burden on the user.

Another technique is to create high-temperature superheated steam by shortening the time to the boiling point by heating water with a heater or the like in the form of a mist, and continuing to heat the steam produced here. is there.

Superheated steam produced by this method does not require a pressure vessel, but due to the accuracy of the heater, heat insulation, heat conduction, temperature control, etc. A certain distance is required as a heating region for heating the steel, and there are many problems in miniaturizing the equipment.

In addition, the existing boiler type and reheating methods using a number of methods have a large heat loss due to the fact that the tube for heating superheated steam and the heating device are separate, so that these heat energy can be maintained. It is necessary to attach heat insulation equipment, etc., and it is difficult to reduce the size. In addition, it is possible to make a pipe through which water vapor passes with metal, etc., and heat the metal itself, but depending on the components contained in basic water, corrosion of the metal may occur or the deposit may solidify inside There is a risk that the internal pressure will rise. In this case, since the internal pressure is separately controlled by a pressure sensor or the like and a program for stopping the heating is required, the manufacturing cost of the apparatus increases.

In the present embodiment, the heat generated in the glass tube 10 is used as the heat of the water vapor generating unit 80 for generating water vapor. For this reason, a heater, a boiler, etc. for heating the steam generation part 80 are unnecessary. Therefore, the superheater 100 can be downsized and maintenance management is easy.

In the present embodiment, since the resistor 12 as the heating portion and the glass tube 10 are integrated, heat loss can be suppressed accordingly. Since the steam is continuously heated to the superheated steam by the glass tube 10 or the continuous glass tube 10, no special equipment such as a pressure vessel or a heat retaining device is required, so that the equipment can be simplified. Further, the temperature of the introduced water vapor and the environmental temperature are read, and the required temperature can be maintained by raising the temperature to the required temperature at the set temperature increase rate and time. Furthermore, subtle changes in voltage and current are possible, and optimization for power saving is easy.

By sending water vapor into the heat generating glass tube 10, superheated water vapor can be generated in a short time and with small equipment. The heat generating glass tube 10 generates heat uniformly, and the temperature of the glass tube 10 having a heat generating function can be adjusted in units of 1 ° C. Therefore, the atmosphere in the heat generating glass tube 10 can be easily controlled. is there. Special glass called heat-generating glass can be controlled from the ambient temperature to a temperature close to 600 ° C, so by heating the steam supplied into the tube, the superheated steam at the required temperature can be converted into small energy. It is possible to produce with small-scale equipment.

That is, according to the present embodiment, energy loss can be reduced because energy loss is small, and the influence of the energy loss factor is small, so that the atmosphere of the glass tube 10 can be easily controlled by that amount, and the size can be reduced. Thus, it is simplified and power saving can be achieved.

(2) When trying to control the temperature of a heat-generating glass having a conductive film by a general technique, a certain voltage is applied to the heat-generating glass in advance so as to maintain a certain temperature in the heat-generating glass. Measure the temperature rise and take a method of temperature control by continuously supplying the voltage and current at the desired temperature to the glass you want to warm, or glass that generates a general single-phase current such as 100V The temperature by the method of stopping the temperature rise by shutting off the electricity supplied to the glass with the thermocouple and temperature controller connected to it to confirm that the temperature rise has reached the required temperature. Management is common.

When the temperature is controlled by these methods, the temperature of the glass when heated at a constant voltage and current measured in advance so as to obtain the desired temperature by reducing the voltage as described above. The required temperature is not reached, for example, when the temperature rise time to the required temperature is required or when the environmental temperature is low.

In addition, with this method, when supplying a constant voltage and current, the resistance value between the electrodes of the glass that is heated in advance is measured for the glass that generates heat each time, and the voltage and current to be supplied are determined. It is necessary to produce a corresponding control device.

On the other hand, when managed by a temperature controller, the temperature of the glass that generates heat is controlled by controlling the power supply time to maintain the set temperature, but it reaches the set temperature. Until then, power is supplied and when the thermocouple tells the temperature controller that the temperature has been achieved, power is supplied.

This control method is a general method, but when trying to control the temperature of glass with high heat retention effect, etc., it generates heat when energized, and the temperature starts to rise. The temperature will rise even after the power supply is cut off, and when the temperature begins to drop and the temperature controller starts energizing the glass that generates heat, the result that the temperature exceeds the set temperature again is repeated each time. .

These have a problem that the temperature is uneven and the temperature of the glass surface constantly rises and falls, resulting in power loss.

In other words, as a method for maintaining the required temperature, in a case where the power supply is turned on and off, or in an apparatus and method that keeps supplying a constant power supply, a constant temperature with a small amount of power can be dealt with according to environmental changes. There is a problem that it is necessary to provide a device that supplies an appropriate voltage and current for measuring the resistance value that varies depending on the area of the glass that generates heat and setting the temperature for each sheet. Also, in general technology, as a general heating element, the power supply is simply turned off when the temperature rises, or the power supply that does not rise any further is used, and temperature control of special products called glass that generates heat is used. There is a problem that the field of use of the device is in a narrow state.

In the present embodiment, since there is a correspondence table for the temperature raising program, it is possible to cope with a glass having a different size without changing the apparatus and method, and to cope with a change in the environmental temperature. It has a function of maintaining temperature and maintaining a constant temperature in a stable environment, and capable of maintaining temperature with low power.

Controls the temperature control of special products called glass that generates heat from the ambient temperature to a temperature close to 600 ° C. Even if the glass area is different, the situation can be automatically grasped, calculated, judged, and controlled. it can.

Controlling the temperature of the heat-generating glass improves the performance of the coating-type and vapor-deposition-type conductive coatings that exist in the market so far, and the glass that only heated up to around 30 ° C generates heat. As the temperature rises to near 600 ° C. due to the improvement, there is an increasing demand for the increased use. In this way, when glass is used as a heating element, the conventional temperature control method is used as it is for glass that generates heat, but its shape, size, thickness and required temperature are each Different, control devices and methods corresponding to each are different, and development has been required each time, and it has been manufactured in a form that responds, but there is a problem with the rate of temperature rise, the temperature becomes unstable, power consumption This is a situation that cannot be avoided, such as a large amount of money and a high development cost for each control device. Considering such a situation further, the present embodiment is very useful. As described above, according to the present embodiment, the versatility of the processing apparatus that controls the heating system can be improved.

(3) When the temperature measured by the temperature measuring unit 30 does not become the temperature as the temperature rising program despite the predetermined current flowing, it is recognized that the temperature measuring unit 30 has failed. it can.

(4) According to the present embodiment, it is possible to determine whether there is a leakage from the measured current value. Therefore, it is easy to check the damaged state.

4). Modifications (1) The liquid heated by the heating device may be water, alcohol, ammonia, or the like whose pH is adjusted in addition to water.

(2) In the above embodiment, a plurality of glass tubes 10 are provided. However, a single glass tube may be used.

This embodiment can be variously modified within the scope of the present invention.

The present invention is widely applied to industries, for example, as an apparatus for generating superheated steam.

DESCRIPTION OF SYMBOLS 10 Glass tube 12 Resistor 14a Electrode 14b Electrode 16 Connection part 20 Processing apparatus 30 Temperature measurement part 32 Current measurement part 40 Power supply part 42 Solid state relay 44 AC / DC converter 46 DC / DC converter 50 External terminal connection part 52 Temperature setting Switch 54 Temperature display lamp 60 Storage unit 62 Touch panel display 64 Computer 66 Transmission / reception unit 70 Terminal 72 Water supply device 74 Supply unit 76 Discharge unit 80 Steam generation unit 90 Vacuum vessel 100 Heating device 200 Heating system 300 Cultivation device 310 Cultivation claw 322 Discharge port 324 Passage 330 Overhang part 340 Thermal insulation pressure part 350

Claims (10)

A plurality of glass tubes;
A resistor provided around the glass tube;
By causing electricity to flow through the resistor, the resistor generates heat,
And a water vapor generating unit that heats water using heat of the resistor to generate water vapor to be introduced into the glass tube. In claim 1,
A plurality of the glass tubes are provided,
The water vapor generating unit is a heating device provided by being surrounded by a plurality of the glass tubes. In claim 2,
A plurality of glass tubes are provided by being connected in series by a connecting tube, and water vapor sequentially passes through each glass tube. In any one of claims 1 to 3
The steam generation unit and the glass tube are heating devices provided in a container whose inside is in a vacuum state. In any one of claims 1 to 3
A current measuring unit for measuring a current value of a current flowing through the resistor;
A temperature measuring unit for measuring the temperature of the glass tube;
A storage unit storing temperature rising program data based on the size of the resistor;
A processing unit for deriving the state of the glass tube based on the current value measured by the current measuring unit and the temperature of the glass tube measured by the temperature measuring unit with reference to the temperature raising program data And a heating device. In claim 5,
The said memory | storage part is a heating apparatus which has the relationship data between the resistance value of the said resistor, and the magnitude | size of the said resistor. In claim 5,
The temperature measuring unit is a heating device that is a thermocouple. A heating device according to claim 1, 2, 3, 6 or 7,
Including a tilling part including a tilling nail,
The tilling claw includes a passage through which superheated steam generated by the heating device passes and a discharge port for discharging superheated steam. In claim 8,
The tilling nail is provided with a projecting portion for pushing the soil outside on the side,
The said discharge outlet is a tilling apparatus provided in the back side of the said overhang | projection part with respect to the advancing direction at the time of tilling. In claim 8,
A tilling device provided with a heater for heating the tilling claws.

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