JP2007046812A - Fluid heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid heating device capable of efficiently producing a heated fluid such as stable saturated steam of high quality or temperature-controlled superheated steam by controlling temperature so as not to cause trouble due to dryout or the like. <P>SOLUTION: Independent control of a first heater 16a based on the detected temperature of a first pipeline upstream side temperature detector 17 and a second heater 16b based on the detected temperature of a first pipeline downstream side temperature detector 18 or a first fluid temperature detector 12 is performed by a microcomputer 13 to allow the respective heaters 16a, 16b to cope with the change of specific heat, heat conduction, or the like of a fluid following a phase change. Trouble due to dryout or the like is thereby prevented from arising in a first heating part 11, and the phase change of the fluid can be efficiently performed. Further, the heated fluid of stable temperature and flow can be positively produced by the independent control of the respective heaters 16a, 16b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fluid heating apparatus that heats a fluid such as gas or liquid.

  2. Description of the Related Art Conventionally, there has been known a fluid heating apparatus that generates water or superheated steam by passing water through a pipeline heated by a heating coil or the like (for example, Patent Document 1). This type of fluid heating apparatus is shown in FIG. The fluid heating device 70 includes a hollow cylindrical pipe 71, a spiral structure 72 that is inserted into the pipe 71 and guides the fluid, and a heating coil 73 wound around the outer circumference of the pipe 71. Has been.

The fluid heating device 70 generates superheated steam as follows. That is, first, water, which is a fluid, is supplied to the upper portion of the pipeline 71 heated by the heating coil 73. Then, the supplied water is guided by the spiral structure 72 and flows from the upper part to the lower part of the pipe 71 (in the direction of the white arrow shown in FIG. 15). Thereby, in the process in which the water which is a fluid flows toward the lower part from the upper part of the pipe line 71, water turns into hot water, produces | generates a vapor | steam, is further heated, and produces | generates a superheated vapor | steam. The generated steam or superheated steam can be taken out from the lower part of the pipe 71.
JP 2004-257695 A

  However, since the pipe 71 described above is entirely heated by the heating coil 73, when the fluid phase change occurs from water to steam or superheated steam, a part of the pipe 71 is dried up. A state (dryout) may occur. Since the amount of heat transfer at the location in the pipe 71 where the dryout has occurred decreases rapidly, the temperature of the pipe 71 increases rapidly, or the amount of heat transfer from the heating coil 73 decreases rapidly. Thus, there is a possibility that only low-quality wet steam can be generated from the pipe line 71 whose temperature control has become difficult due to dryout. In addition, it becomes difficult to control the temperature of the steam.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to control the temperature of the saturated steam that is high in quality and stable so as not to cause problems due to dryout or the like. An object of the present invention is to provide a fluid heating apparatus capable of efficiently generating a heating fluid such as superheated steam.

  In order to achieve the above object, the first aspect of the present invention provides a first conduit for passing a fluid such as gas or liquid, a first heater for heating the upstream side of the first conduit, A second heater for heating the downstream side, the first pipe, the first heater and the first holding part for holding the second heater, and the temperature on the upstream side of the first pipe are detected. In the first heating means, the first heating means comprising: first pipe upstream temperature detection means; and first pipe downstream temperature detection means for detecting the temperature downstream of the first pipe. Of the first fluid temperature detecting means for detecting the temperature of the heated fluid, the first pipe upstream temperature detecting means, the first pipe downstream temperature detecting means, or the first fluid temperature detecting means Based on at least one detected temperature, the first heating heat is generated so as to generate a heating fluid such as a predetermined steam or superheated steam. Or has a configuration and a control means for controlling at least one of said second heater.

  According to the invention of claim 1, the temperature upstream of the first pipe detected by the first pipe upstream temperature detecting means, for example, the temperature of the fluid passing through the upstream of the first pipe, the first pipe A temperature downstream of the first pipe detected by the downstream temperature detecting means, for example, a temperature of a fluid passing through the downstream side of the first pipe, or a first heating means detected by the first fluid temperature detecting means. Based on the temperature of the heating fluid, at least one of the first heater and the second heater is controlled independently by the control means.

  The fluid heating device according to claim 2 is a first conduit that allows fluid such as gas or liquid to pass through, a first heater that heats the upstream side of the first conduit, and a downstream side of the first conduit. A first heater that heats the first pipe, a first holding part that holds the first heater, the first heater, and the first heater, and a first that detects a temperature upstream of the first pipe. A first heating means comprising a pipe upstream temperature detecting means and a first pipe downstream temperature detecting means for detecting a temperature downstream of the first pipe, and communicated with the first pipe A second conduit for passing the fluid heated by the first heating means, a third heater for heating the second conduit, and a second for holding the second conduit and the third heater. A second heating means comprising a holding part and a second pipe temperature detecting means for detecting the temperature of the second pipe, and being heated in the second heating means A second fluid temperature detecting means for detecting the temperature of the fluid; the first pipe upstream temperature detecting means; the first pipe downstream temperature detecting means; the second pipe temperature detecting means; or the second fluid temperature detecting. And a control means for controlling at least one of the first to third heaters so as to generate a heating fluid such as predetermined steam or superheated steam based on at least one detected temperature among the means. It has become.

  According to the invention of claim 2, the temperature on the upstream side of the first pipe detected by the first pipe upstream side temperature detecting means, for example, the temperature of the fluid passing through the upstream side of the first pipe, the first pipe The temperature on the downstream side of the first pipeline detected by the downstream temperature detection means, for example, the temperature of the fluid passing through the downstream side of the first pipeline, the temperature of the second pipeline detected by the second pipeline temperature detection means, For example, at least one of the first to third heaters based on the temperature of the fluid passing through the second pipe or the temperature of the heating fluid generated by the second heating means detected by the second fluid temperature detection means. Are controlled independently by the control means.

  The fluid heating device according to claim 3 is the fluid heating device according to claim 1, wherein the control means continues energization to the first heater and energizes the second heater to the first pipe. The control is based on the path downstream temperature detecting means or the first fluid temperature detecting means.

  According to the invention of claim 3, in addition to the operation of claim 1, the energization to the first heater is continued, and the energization to the second heater is connected to the first pipe downstream side temperature detecting means or the first fluid. By controlling based on the temperature detection means, the temperature and flow rate of the heating fluid generated by the first heating means can be reliably stabilized. Moreover, the temperature stability in a 1st pipe line can be maintained by continuing energization to a 1st heater. Furthermore, for example, by controlling the temperature of the first heater to a temperature at which nucleate boiling occurs, the amount of power supplied to the first heater can be kept low, so the amount of power supplied to the second heater is increased. be able to.

  The fluid heating device according to claim 4 is the fluid heating device according to claim 1 or 3, wherein a metal heat transfer member is accommodated in the first conduit in a state where the fluid can flow. It has a structure.

  According to the invention of claim 4, in addition to the action of claim 1 or claim 3, the heat transfer member is housed in the first pipe line, so that the first contact area is increased in the state of contact with the fluid. Heat from the heater or the second heater is transferred to the fluid. Thereby, the heat from the first heater or the second heater can be transferred to the fluid more quickly and efficiently.

  The fluid heating device according to claim 5 is the fluid heating device according to claim 1 or 3, wherein at least one of the first heater and the second heater is provided with a voltage stabilizer. It has a structure.

  According to invention of Claim 5, in addition to the effect | action of Claim 1 or Claim 3, the set electric power can be supplied stably.

  The fluid heating device according to claim 6 is the fluid heating device according to claim 4 or 5, wherein the first pipe line, the first holding portion, and the heat transfer member are stainless steel, aluminum, copper, iron. It has a structure made of a metal having good thermal conductivity.

  According to the invention of claim 6, in addition to the effects of claim 4 or claim 5, the first conduit, the first holding part and the heat transfer member have good thermal conductivity such as stainless steel, aluminum, copper, iron and the like. When the fluid heating device is turned on, the amount of heat from each heater is immediately transferred to the first pipe, the second pipe, the holding member, and the heat transfer member, and heated instantaneously. The Thereby, the heat from each heater is quickly and efficiently transmitted to the fluid passing through the first conduit, and the fluid can be heated quickly and efficiently.

  The fluid heating device according to claim 7 is the fluid heating device according to claim 2, wherein the first fluid temperature detecting means for detecting the temperature of the fluid heated by the first heating means, and the first conduit Based on the detection temperature of at least one of the flow side temperature detection means, the first pipe downstream temperature detection means, the second pipe temperature detection means, the first fluid temperature detection means, or the second fluid temperature detection means, It has a structure having control means for controlling at least one of the first to third heaters so as to generate a heating fluid such as steam or superheated steam.

  According to the invention of claim 7, in addition to the operation of claim 2, the temperature upstream of the first pipe detected by the first pipe upstream temperature detecting means, for example, the fluid passing through the upstream of the first pipe , The temperature downstream of the first pipe detected by the first pipe downstream temperature detecting means, for example, the temperature of the fluid passing through the downstream of the first pipe, and the second pipe temperature detecting means The temperature of the second pipe line, for example, the temperature of the fluid passing through the second pipe line, the temperature of the heated fluid generated by the first heating means detected by the first fluid temperature detection means, and the second fluid temperature detection means Based on the detected temperature of the heating fluid generated by the second heating means, at least one of the first to third heaters is independently controlled by the control means.

  The fluid heating device according to claim 8 is the fluid heating device according to claim 2, wherein the control means continues energization to the first heater and energizes the second heater to the first pipe. The control is based on the downstream path temperature detection means, and the energization to the third heater is controlled based on the second pipeline temperature detection means or the second fluid temperature detection means.

  According to the invention of claim 8, in addition to the action of claim 2, the energization to the first heater is continued and the energization to the second heater is controlled based on the first pipe downstream side temperature detecting means. And the temperature and flow rate of the heating fluid generated by the first heating means and the second heating means by controlling the energization to the third heater based on the second pipe temperature detecting means or the second fluid temperature detecting means. Can be reliably stabilized. Moreover, the temperature stability in a 1st pipe line can be maintained by continuing energization to a 1st heater. Furthermore, for example, by controlling the temperature of the first heater to a temperature at which nucleate boiling occurs, the amount of power supplied to the first heater can be kept low, so that the first heater is supplied to the second heater or the third heater. The amount of power can be increased.

  The fluid heating device according to claim 9 is the fluid heating device according to claim 7, wherein the control means continues energization to the first heater and energizes the second heater to the first pipe. The control is based on the downstream path temperature detection means or the first fluid temperature detection means, and the power supply to the third heater is controlled based on the second pipeline temperature detection means or the second fluid temperature detection means. .

  According to the ninth aspect of the present invention, in addition to the action of the seventh aspect, the energization to the first heater is continued and the energization to the second heater is performed by the first pipe downstream temperature detecting means or the first fluid. It is generated by the first heating means and the second heating means by controlling based on the temperature detecting means and controlling the energization to the third heater based on the second pipe temperature detecting means or the second fluid temperature detecting means. The temperature and flow rate of the heated fluid can be reliably stabilized. Moreover, the temperature stability in a 1st pipe line can be maintained by continuing energization to a 1st heater. Furthermore, for example, by controlling the temperature of the first heater to a temperature at which nucleate boiling occurs, the amount of power supplied to the first heater can be kept low, so that the first heater is supplied to the second heater or the third heater. The amount of power can be increased.

  The fluid heating device according to claim 10 is the fluid heating device according to claim 2 or 7, wherein the second pipe is formed integrally with the first pipe.

  According to the invention of claim 10, in addition to the action of claim 2 or claim 7, the first pipe and the second pipe are integrally formed so that the joint or the like is connected to the first pipe and the second pipe. It is not necessary to provide between. Thereby, the fluid heating device can be configured as an integrated type, and the entire device can be downsized. Moreover, since it is not necessary to provide a joint etc. between a 1st pipe line and a 2nd pipe line, between a 1st heating means and a 2nd heating means can be set to a desired space | interval. For example, by setting the pipe length of the pipe line located between the first heating means and the second heating means to be short, heat radiation from the pipe line located between the first heating means and the second heating means. Therefore, it is possible to prevent the temperature of the fluid passing through the pipe from being lowered. Therefore, the heating fluid generated by the first heating unit is supplied to the second heating unit while maintaining a high quality state.

  The fluid heating device according to claim 11 is the fluid heating device according to claim 2 or 7, wherein at least one of the first to third heaters is provided with a voltage stabilizer. It has a structure.

  According to the eleventh aspect of the invention, in addition to the action of the second or seventh aspect, the set power can be stably supplied.

  The fluid heating device according to claim 12 is the fluid heating device according to claim 2 or 7, wherein the fluid can flow in at least one of the first conduit and the second conduit. In this state, a metal heat transfer member is housed.

  According to the invention of claim 12, in addition to the action of claim 2 or claim 7, the heat transfer member is housed in at least one of the first pipe and the second pipe, so that the fluid and The heat from the first heater, the second heater, and the third heater is transferred to the fluid in a state where the contact area increases. Thereby, the heat from the first heater, the second heater, and the third heater can be transferred to the fluid more quickly and efficiently.

  The fluid heating device according to claim 13 is the fluid heating device according to claim 12, wherein the first conduit, the second conduit, the first holding portion, the second holding portion, and the heat transfer member are: , Stainless steel, aluminum, copper, iron, and other metals having good thermal conductivity.

  According to the invention of claim 13, in addition to the action of claim 12, the first pipe line, the second pipe line, the first holding part, the second holding part, and the heat transfer member are made of stainless steel, aluminum, copper, iron When the fluid heating device is turned on, the amount of heat from each heater immediately becomes the first pipe line, the second pipe line, the first holding part, the second holding part. Heat is transferred to the heat transfer member and the heat transfer member, and heated instantaneously. Thereby, the heat from each heater is quickly and efficiently transmitted to the fluid passing through each pipeline, and the fluid can be heated quickly and efficiently.

  A fluid heating device according to a fourteenth aspect is the fluid heating device according to the second or seventh aspect, wherein an outer periphery of the second holding portion is covered with a heat insulating material.

  According to the invention of claim 14, in addition to the action of claim 2 or claim 7, the thermal efficiency in the apparatus can be increased by covering the outer periphery of the second holding part with the heat insulating material.

  The fluid heating device according to claim 15 is the fluid heating device according to any one of claims 1 to 14, wherein the first pipe upstream side temperature detection means is a fluid in the first pipe. The first pipe downstream temperature detecting means is arranged in the vicinity of the inlet, and is arranged in the vicinity of the fluid outlet of the first pipe.

  According to the invention of claim 15, in addition to the action of any one of claims 1 to 14, the first pipe upstream side temperature detection means is disposed in the vicinity of the fluid inlet of the first pipe, and the first pipe By installing the pipe downstream temperature detection means near the fluid outlet of the first pipe, it is possible to prevent abnormal temperature drop near the fluid inlet, abnormal temperature rise near the fluid outlet, etc. The fluid phase can be changed efficiently.

  The fluid heating device according to claim 16 is the fluid heating device according to any one of claims 1 to 15, wherein the first pipe upstream side temperature detection means and the first pipe downstream temperature detection. The means has a structure embedded in the first holding portion.

  According to the invention of claim 16, in addition to the action of any one of claims 1 to 15, the first pipe upstream side temperature detection means and the first pipe close to the wall surface of the first pipe By embedding the downstream temperature detecting means, the temperature of the first pipe, for example, the temperature of the fluid passing through the first pipe can be detected quickly, so that the temperature stability of the fluid in the first pipe is improved. be able to.

  The fluid heating device according to claim 17 is the fluid heating device according to any one of claims 1 to 16, wherein the fluid inlet of the first pipeline is in the vicinity of the fluid inlet of the first pipeline. A safety valve for discharging the fluid to the outside is provided.

  According to the invention of claim 17, in addition to the action of any one of claims 1 to 16, for example, when the heating fluid is generated in the first conduit, In the case where the pressure is applied and the air is blocked, the safety valve is provided, so that the inside of the first heating means can be prevented from becoming a high pressure, and problems such as rupture can be prevented.

  The fluid heating device according to claim 18 is the fluid heating device according to claim 4 or 12, wherein the heat transfer member is made of sintered metal, foam metal, metal plate, metal steel ball, or metal wool. It has a structure consisting of at least one of them.

  According to the invention of claim 18, in addition to the action of claim 4 or claim 12, the heat transfer member made of sintered metal, foam metal, metal plate, metal steel ball, metal wool or the like having a large heat capacity is a heat transfer member. Since the conductivity is good, the fluid can be efficiently heated when directly exchanging heat with the fluid, and a desired heating fluid can be easily obtained in a short time.

  A fluid heating device according to a nineteenth aspect is the fluid heating device according to the first or third aspect, further comprising an acid solvent supply device that supplies the acid solvent into the first pipe line.

  According to the invention of claim 19, in addition to the action of claim 1 or claim 3, scales such as calcium dissolved in water adhere to the first pipe line by periodically performing acid cleaning. Can be prevented.

  The fluid heating apparatus according to claim 20 is the fluid heating apparatus according to claim 2 or claim 7, wherein the acid solvent supply apparatus supplies the acid solvent to at least one of the first pipe line and the second pipe line. It has composition which has.

  According to the invention of claim 20, in addition to the action of claim 2 or claim 7, by performing acid cleaning periodically, the scale of calcium or the like dissolved in the water is contained in the first pipe line or the first pipe. It can prevent adhering in 2 pipe lines.

  The fluid heating device according to claim 21 is the fluid heating device according to any one of claims 1 to 20, wherein an outer periphery of the first holding portion is covered with a heat insulating material. ing.

  According to the invention of claim 21, in addition to the action of any one of claims 1 to 20, the thermal efficiency in the apparatus can be increased by covering the outer periphery of the holding portion with the heat insulating material.

  According to the first aspect of the invention, the first heating heater and the first heater are detected by the control means based on the detected temperatures of the first pipe upstream temperature detecting means, the first pipe downstream temperature detecting means, and the first fluid temperature detecting means. By controlling each of the second heaters independently, each heater can be adapted to changes in the specific heat, heat conduction, etc. of the fluid that accompanies the phase change, so problems such as dryout in the first heating means Can be prevented, and the phase change of the fluid can be performed efficiently. Further, by controlling the first heater and the second heater independently, it is possible to reliably generate a heating fluid having a stable temperature and flow rate.

  According to the invention of claim 2, based on each detected temperature of the first pipe upstream temperature detecting means, the first pipe downstream temperature detecting means, the second pipe temperature detecting means and the second fluid temperature detecting means, By controlling the first heater, the second heater, and the third heater independently by the control means, it is possible to make each heater respond to changes in the specific heat, heat conduction, etc. of the fluid accompanying the phase change. Therefore, it is possible to prevent a problem due to dryout or the like in the first heating means or the second heating means, and to efficiently change the phase of the fluid. In addition, by controlling the first heater, the second heater, and the third heater independently, it is possible to reliably generate a heating fluid having a stable temperature and flow rate.

  1 to 4 show a first embodiment of the present invention, FIG. 1 is a front sectional view of a fluid heating apparatus according to the first embodiment of the present invention, and FIG. 2 is a diagram of the fluid heating apparatus shown in FIG. FIG. 3 is a block diagram showing a control circuit of the fluid heating device shown in FIG. 1, and FIG. 4 is a flowchart showing steam generation control by the fluid heating device shown in FIG.

  First, the entire structure of the fluid heating apparatus will be described with reference to FIG. 1 or FIG. The fluid heating apparatus 1 mainly includes a first heating unit 11, a first fluid temperature detector 12, and a microcomputer (hereinafter referred to as a microcomputer) 13 as a control means.

  The first heating unit 11 includes a first holding unit 14, a first pipeline 15, a heater 16, a first pipeline upstream temperature detector 17, a first pipeline downstream temperature detector 18, and It is composed of

  The first holding unit 14 is made of an aluminum body having a vertically long rectangular parallelepiped shape, and holds the first pipe line 15 and the heater 16. Moreover, the 1st holding | maintenance part 14 has the insertion hole 11a so that the 1st pipeline upstream temperature detector 17 and the 1st pipeline downstream temperature detector 18 can be inserted and hold | maintained. Furthermore, the outer periphery of the 1st holding | maintenance part 14 is covered with the heat insulating material (not shown) as needed.

  The first conduit 15 is made of a hollow cylindrical aluminum body, and the fluid inlet on the upstream 15a side of the first conduit 15 is connected to a water tank 21 via a water supply pump 20, as shown in FIG. ing. The water tank 21 stores water that is a fluid. Moreover, as shown in FIG.1 and FIG.2, the heat transfer member 19 which consists of several spheres made from SUS (Steel Use Stainless) which accept | permit the distribution | circulation of water is accommodated in the 1st pipe line 15. As shown in FIG.

  The heater 16 includes a first heater 16 a disposed on the upstream 15 a side of the first pipeline 15 and a second heater 16 b disposed on the downstream 15 b side of the first pipeline 15. Each of the heaters 16a and 16b uses a sheathed heater. The capacity of the first heater 16a is set smaller than the capacity of the second heater 16b. Furthermore, each heater 16a, 16b is provided with a voltage stabilizer (not shown).

  The first pipe upstream temperature detector 17 is near the fluid inlet on the upstream 15 a side of the first pipe 15, and the first pipe downstream temperature detector 18 is near the fluid outlet on the downstream 15 b side of the first pipe 15. Respectively. Further, the first pipe downstream temperature detector 18 is inserted into the insertion hole 14 a of the first holding part 14 toward the first pipe 15 as shown in FIG. 2. Similarly, the first pipe upstream temperature detector 17 is also inserted into the insertion hole (not shown) of the first holding unit 14 toward the first pipe 15. By arranging the pipe temperature detectors 17 and 18 in this way, the temperatures of the upstream 15a side wall surface and the downstream 15b side wall surface of the first pipe line 15 can be detected independently. Further, the first pipe upstream temperature detector 17 and the first pipe downstream temperature detector 18 use thermistors.

  The first fluid temperature detector 12 communicates with the first pipe 15 and is inserted into the first pipe 15 through an insertion pipe 12 a provided so as to be orthogonal to the pipe 15 a protruding to the outside of the first heating unit 11. It is inserted to a position where it can come into contact with the fluid passing therethrough. The first fluid temperature detector 12 uses a thermistor.

  As shown in FIG. 3, the microcomputer 13 includes a CPU 13a and a memory 13b. The CPU 13a is inputted with detection signals from the first fluid temperature detector 12 and the pipe temperature detectors 17 and 18, start signals from measurement signals from the start switch 22 and the timer 23. Based on these input signals, energization to each heater 16a, 16b is controlled. The second heater 16b is controlled by the first pipe downstream temperature detector 18 when the fluid heating device 1 is in the starting state, and the first heater 16b when the fluid heating device 1 is in the steam generating state. It is controlled by the fluid temperature detector 12.

  Hereinafter, the operation of the fluid heating apparatus 1 will be described based on the flowchart of FIG. In addition, the fluid of this embodiment is water. As this water, it is preferable to use soft water in order to prevent the scale from adhering in the pipeline.

  The microcomputer 13 includes a set temperature T1 on the upstream wall surface 15a of the first pipe line 15, a set temperature T2 on the downstream wall surface 15b of the first pipe line 15, a set temperature T3 of steam generated by the first heating unit 11, and water supply. Each setting signal based on the set energization time t1 of the pump 20 is input (step S1).

  When each setting signal is input in step S1, the microcomputer 13 constantly monitors whether the start switch 22 is turned on (standby state, step S2).

  When the microcomputer 13 determines that the start switch 22 is turned on in step S2, the temperature Ta on the upstream 15a wall surface of the first pipeline 15 is detected by the first pipeline upstream temperature detector 17 (step S3).

  When the temperature Ta of the upstream side 15a wall surface of the first pipeline 15 has reached the set temperature T1 in step S3, the temperature Tb of the downstream side 15b wall surface of the first pipeline 15 is detected (step S4). On the other hand, when the set temperature T1 has not been reached, the first heater 16a is energized (step S5), and then the process returns to step S3.

  When the temperature Tb of the wall surface 15b on the downstream side 15b of the first pipe line 15 reaches the set temperature T2 in step S4, it is determined whether or not the first heater 16a is energized (step S6). On the other hand, when the set temperature T2 has not been reached, the second heater 16b is energized (step S7), and then the process returns to step S3.

  When energization to the first heater 16a is stopped in step S6, it is determined whether or not the second heater 16b is energized (step S8). On the other hand, when the first heater 16a is energized, the energization to the first heater 16a is stopped (step S9), and then the process proceeds to step S8.

  When energization to the second heater 16b is stopped in step S8, the water supply pump 20 is energized (step S10). On the other hand, when the second heater 16b is energized, the energization of the second heater 16b is stopped (step S11), and then the process proceeds to step S10.

  In step S10, the timer 23 is energized at the same time as the water supply pump 20 is energized, and the first heater 16a is energized (step S12 and step S13). When the timer 23 is energized, the time t after the energization of the water supply pump 20 is detected by the timer 23.

  When the first heater 16a is energized in step S13, it is confirmed whether or not the time t after energizing the feed water pump 20 has reached the set energization time t1 (step S14).

  When the time t since the energization of the feed water pump 20 has reached the set energization time t1 in step S14, the energization of the feed water pump 20 and the first heater 16a is stopped (step S15).

  When energization of the feed water pump 20 and the first heater 16a is stopped in step S15, it is determined whether or not the second heater 16b is energized (step S16).

  When energization to the second heater 16b is stopped in step S16, the process returns to step S2. On the other hand, when the second heater 16b is energized, the energization to the second heater 16b is stopped (step S17), and then the process returns to step S2.

  When the time t from when the water supply pump 20 is energized in step S14 does not reach the set energization time t1, the first fluid temperature detector 12 detects the temperature Tc of the steam generated by the first heating unit 11. (Step S18).

  When the steam temperature Tc detected by the first fluid temperature detector 12 in step S18 has reached the set temperature T3, the process returns to step S14. On the other hand, when the steam temperature Tc has not reached the set temperature T3, the second heater 16b is energized (step S19), and the process returns to step S18.

  According to the present embodiment, the first heater 16 a is replaced with the temperature detected by the first pipe downstream temperature detector 18 or the first fluid temperature detector 12 based on the detected temperature of the first pipe upstream temperature detector 17. Since the second heater 16b is independently controlled by the microcomputer 13 based on the above, the heaters 16a and 16b can correspond to changes in the specific heat and heat conduction of the fluid accompanying the phase change. It is possible to prevent problems due to dryout or the like in the one heating unit 11 and to efficiently change the phase of the fluid. Moreover, by controlling each heater 16a, 16b independently, the heating fluid of the stable temperature and flow volume can be produced | generated reliably.

  Further, the temperature of the fluid generated in the first heating unit 11 is controlled by continuing the energization to the first heater 16a and controlling the energization to the second heater 16b based on the first fluid temperature detector 12. And the flow rate can be reliably stabilized. Moreover, the temperature stability in the 1st pipe line 15 is maintainable by continuing energization to the 1st heater 16a. Furthermore, for example, by controlling the temperature of the first heater 16a to a temperature at which nucleate boiling occurs, the amount of power supplied to the first heater 16a can be kept low, so the amount of power supplied to the second heater 16b Can be increased.

  Moreover, since the voltage stabilizer is provided in each heater 16a, 16b, the set electric power can be supplied stably and reliably.

  Moreover, since the contact area with the water which is a fluid increases by providing the heat transfer member 19 which consists of a SUS ball | bowl in the 1st pipe line 15, the heat from each heater 16a, 16b turns into water. It becomes easy to transfer heat and promotes steam generation.

  Moreover, since the 1st holding | maintenance part 14, the 1st pipe line 15, and the heat-transfer member 19 are comprised with the metal with favorable heat conductivity, when the starting switch 22 of the fluid heating apparatus 1 is turned on, each heating The amount of heat from the heaters 16a and 16b is immediately transferred and heated instantaneously. Thereby, the heat from each heater 16a, 16b is transmitted to the water which passes the inside of the 1st pipe line 15 quickly and efficiently, and a vapor | steam can be produced | generated rapidly and efficiently.

  Moreover, the thermal efficiency of the fluid heating apparatus 1 can be improved by covering the outer periphery of the 1st holding | maintenance part 14 with a heat insulating material (not shown).

  Further, the first pipe upstream side temperature detector 17 is disposed in the vicinity of the fluid inlet on the upstream 15 a side of the first pipe line 15, and the first pipe downstream side temperature detector 18 is connected to the first pipe line 15. Since it is arranged in the vicinity of the fluid outlet on the downstream 15b side, an abnormal temperature drop near the fluid inlet and an abnormal temperature rise near the fluid outlet can be prevented, and the water phase can be changed efficiently.

  5 to 9 show a second embodiment of the present invention. FIG. 5 is a front sectional view of a fluid heating apparatus according to the second embodiment of the present invention. FIG. 6 is a diagram of the fluid heating apparatus shown in FIG. FIG. 7 is a block diagram showing a control circuit of the fluid heating apparatus shown in FIG. 5, FIG. 8 is a flowchart showing steam generation control by the fluid heating apparatus shown in FIG. 5, and FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the first embodiment, steam is generated from water only by the first heating unit 11, but this embodiment is different in that a second heating unit 31 is further provided as shown in FIG. 5.

  As shown in FIG. 5, the fluid heating device 2 is mainly configured by a first heating unit 11, a second heating unit 31, a second fluid temperature detector 32, and a microcomputer 33 that is a control unit. Yes. Since the first heating unit 11 has been described in the first embodiment, the description thereof is omitted.

  The second heating unit 31 includes a second holding unit 34, a second pipe 35, a third heater 36, and a second pipe temperature detector 37.

  The second pipe 35 is made of a hollow cylindrical aluminum body, and the upstream side of the second pipe 35 is connected to the downstream 15 b of the first pipe 15 via a joint 40. Further, as shown in FIGS. 5 and 6, a heat transfer member 19 made of a plurality of small SUS balls that allow water to flow is housed in the second pipe 35.

  The 2nd holding part 34 is comprised with the vertically long rectangular parallelepiped aluminum body, and is holding the 2nd pipe line 35 and the 3rd heater 36 as shown in FIG.5 and FIG.6. The third heater 36 uses a sheathed heater. Moreover, the 2nd holding | maintenance part 34 has the insertion hole 34a so that the 2nd pipe line temperature detector 37 can be inserted and hold | maintained as shown in FIG. Furthermore, the outer periphery of the second holding portion 34 is covered with a heat insulating material (not shown) as necessary.

  The second pipe temperature detector 37 is disposed near the center of the second pipe 35. The reason why the second pipe 35 is arranged near the center is that the phase change does not occur even if the steam supplied from the first heating unit 11 to the second heating unit 31 is further heated in the second heating unit 31. What is necessary is just to detect the temperature of the 2 pipeline 35 whole. Moreover, the 2nd pipe | tube temperature detector 37 is inserted in the insertion hole 34a of the 2nd holding | maintenance part 34, as shown in FIG. By arranging the second pipe temperature detector 37 in this way, the temperature of the second pipe 35 can be detected.

  The second fluid temperature detector 32 communicates with the second pipe 35 through an insertion pipe 34 a provided so as to be orthogonal to the pipe 35 a protruding to the outside of the second heating unit 31. It is inserted to a position where it can come into contact with the fluid passing therethrough. The second fluid temperature detector 32 uses a thermistor.

  As shown in FIG. 7, the microcomputer 33 includes a CPU 33a and a memory 33b. The CPU 33a is supplied with detection temperatures from the second fluid temperature detector 32 and the pipe temperature detectors 17, 18, and 37, and activation signals from the measurement signals of the activation switch 22 and timer 23. Based on these input signals, the energization of the heaters 16a, 16b, 36 is controlled. Note that the third heater 36 is controlled by the second pipe temperature detector 37 when the fluid heating device 2 is in the starting state, and by the second fluid temperature detector 32 when it is in the superheated steam generation state. Be controlled.

  Hereinafter, the operation of the fluid heating device 2 will be described based on the flowcharts of FIGS. 8 and 9. In addition, the fluid of this embodiment is water. As this water, it is preferable to use soft water in order to prevent the scale from adhering in the pipeline.

  The microcomputer 33 includes a set temperature T1 on the wall surface of the upstream side 15a of the first pipe line 15, a set temperature T2 on the wall surface of the downstream side 15b of the first pipe line 15, a set temperature T4 at the center of the wall surface of the second pipe line 35, and a second heating. A setting signal based on the set temperature T5 of the superheated steam generated by the unit 31 and the set energization time t1 of the feed water pump 20 is input (step S20).

  In step S20, when a setting signal is input, the microcomputer 33 constantly monitors whether the start switch 22 is turned on (standby state, step S21).

  When the microcomputer 33 determines that the start switch 22 is turned on in step S21, the temperature Ta of the upstream 15a wall surface of the first pipeline 15 is detected by the first pipeline upstream temperature detector 17 (step S22).

  When the temperature Ta of the upstream side 15a wall surface of the first pipeline 15 reaches the set temperature T1 in step S22, the temperature Tb of the downstream side 15b wall surface of the first pipeline 15 is detected (step S23). On the other hand, when the set temperature T1 has not been reached, the first heater 16a is energized (step S24), and then the process returns to step S22.

  In step S23, when the temperature Tb of the wall surface 15b on the downstream side of the first pipeline 15 has reached the set temperature T2, the temperature Td near the center of the second pipeline 35 is detected (step S26). On the other hand, when the set temperature T2 has not been reached, the second heater 16b is energized (step S25), and then the process returns to step S22.

  When the temperature Td at the center of the wall surface of the second duct 35 reaches the set temperature T4 in step S26, it is determined whether or not the first heater 16a is energized (step S27). On the other hand, when the set temperature T4 has not been reached, the third heater 36 is energized (step S28), and then the process returns to step S22.

  When energization to the first heater 16a is stopped in step S27, it is determined whether or not the second heater 16b is energized (step S29). On the other hand, when the first heater 16a is energized, the energization to the first heater 16a is stopped (step S30), and then the process proceeds to step S29.

  When energization to the second heater 16b is stopped in step S29, it is determined whether or not the third heater 36 is energized (step S31). On the other hand, when the second heater 16b is energized, the energization of the second heater 16b is stopped (step S32), and then the process proceeds to step S31.

  When energization to the third heater 36 is stopped in step S31, the water supply pump 20 is energized (step S33). On the other hand, when the third heater 36 is energized, the energization to the third heater 36 is stopped (step S34), and then the process proceeds to step S33.

  In step S33, the timer 23 is energized at the same time as the water supply pump 20 is energized, and the first heater 16a is energized (step S35 and step S36). When the timer 23 is energized, the time t after the energization of the water supply pump 20 is detected by the timer 23.

  When the first heater 16a is energized in step S36, it is confirmed whether or not the time t after energizing the feed water pump 20 has reached the set energization time t1 (step S37).

  When the time t since the energization of the feed water pump 20 has reached the set energization time t1 in step S37, the energization of the feed water pump 20 and the first heater 16a is stopped (step S38).

  When energization of the feed water pump 20 and the first heater 16a is stopped in step S38, it is determined whether or not the second heater 16b is energized (step S39).

  When energization to the second heater 16b is stopped in step S39, it is determined whether or not the third heater 36 is energized (step S41). On the other hand, when the second heater 16b is energized, the energization to the second heater 16b is stopped (step S40), and then the process proceeds to step S41.

  When energization to the third heater 36 is stopped in step S41, the process returns to step S22. On the other hand, when the third heater 36 is energized, the energization to the third heater 3 is stopped (step S42), and then the process proceeds to step S22.

  When the time t after energization of the water supply pump 20 does not reach the set energization time t1 in step S37, the temperature Td near the center of the second pipe 35 is detected (step S43).

  When the temperature Td at the center of the wall surface of the second duct 35 reaches the set temperature T4 in step S43, the temperature Te of the superheated steam generated by the second heating unit 31 is detected by the second fluid temperature detector 32 ( Step S45). On the other hand, when the temperature Td at the center of the wall surface of the second duct 35 has not reached the set temperature T4, the third heater 36 is energized (step S44), and then the process returns to step S43.

  In step S45, when the temperature Te of the superheated steam generated by the second heating unit 31 has reached the set temperature T5, the process returns to step S37. On the other hand, when the temperature Te of the superheated steam generated by the second heating unit 31 has not reached the set temperature T5, the third heater 36 is energized (step S46), and then the process returns to step S45.

  According to the present embodiment, each detected temperature of the first pipe upstream temperature detector 17, the first pipe downstream temperature detector 18, the second pipe temperature detector 37, or the second fluid temperature detector 32. Based on the above, each of the heaters 16a, 16b, and 36 is independently controlled by the microcomputer 33, so that each of the heaters 16a, 16b, and 36 is made to respond to a change in the specific heat and heat conduction of the fluid accompanying the phase change. Therefore, it is possible to prevent a problem due to dryout or the like in the first heating unit 11 or the second heating unit 31, and to efficiently change the phase of the fluid. Moreover, by controlling each heater 16a, 16b, 36 independently, the heating fluid of the stable temperature and flow volume can be produced | generated reliably.

  Further, the energization to the first heater 16a is continued, the energization to the second heater 16b is controlled based on the first pipe downstream side temperature detector 18, and the energization to the third heater 36 is controlled. By controlling based on the two-fluid temperature detector 32, the temperature and flow rate of the heating fluid generated by the first heating unit 11 and the second heating unit 31 can be reliably stabilized. Moreover, the temperature stability in the 1st pipe line 15 can be maintained by continuing energization to the 1st heater 16a. Furthermore, for example, by controlling the temperature of the first heater 16a to a temperature at which nucleate boiling occurs, the amount of electric power supplied to the first heater 16a can be kept low, so the second heater 16b and the third heater The amount of power supplied to 36 can be increased.

  Moreover, since each voltage heater is provided in each heater 16a, 16b, 36, the set electric power can be supplied stably and reliably.

  Moreover, since the 1st holding | maintenance part 14, the 1st pipe line 15, the 2nd holding | maintenance part 34, the 2nd pipe line 35, and the heat-transfer member 19 are comprised with the metal with favorable heat conductivity, it is a fluid heating apparatus. When the start switch 22 is turned on, the amount of heat from each of the heaters 16a, 16b, and 36 is immediately transferred and heated instantaneously. Thereby, the heat from each heater 16a, 16b, 36 is quickly and efficiently transmitted to the water or steam passing through the first conduit 15 or the second conduit 35, and the superheated steam is generated quickly and efficiently. be able to.

  Moreover, since the contact area with water increases by providing the heat transfer member 19 which consists of a SUS ball in the 1st pipe line 15 and the 2nd pipe line 35, from each heater 16a, 16b, 36 The heat of the water is easily transferred to the water, and the generation of high-quality steam and temperature-controlled superheated steam can be promoted.

  Moreover, the thermal efficiency of the fluid heating apparatus 2 can be improved by covering the outer periphery of the 1st heating part 11 and the 2nd heating part 31 with a heat insulating material (not shown).

  Furthermore, even when the energization amount is small, the water can be heated in two stages of the first heating unit 11 and the second heating unit 31, so that high-quality steam and temperature-controlled superheated steam are generated reliably. can do. Other functions and effects are the same as those in the first embodiment.

  10 to 13 show a third embodiment of the present invention. FIG. 10 is a front sectional view of a fluid heating apparatus according to the second embodiment of the present invention. FIG. 11 is a diagram of the fluid heating apparatus shown in FIG. FIG. 12 is a block diagram showing a control circuit, FIG. 12 is a flowchart showing steam generation control by the fluid heating apparatus shown in FIG. 10, and FIG. 13 is a flowchart showing steam generation control by the fluid heating apparatus shown in FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The second pipe line 35 of the second embodiment is connected to the first pipe line 15 via the joint 40, but this embodiment has been described in the second embodiment as shown in FIG. The difference is that the first pipe line 15 and the second pipe line 35 are connected by a pipe line 41 formed integrally with the first pipe line 15 and the second pipe line 35.

  Moreover, although the said 2nd Embodiment had only the 1st pipe line downstream temperature detector 18 as a means to detect the temperature of the 2nd heater 16b, this embodiment is shown in FIG. The first fluid temperature detector 12 is different from the first pipe downstream temperature detector 18 in that the first fluid temperature detector 12 is provided.

  The second heater 16b is controlled by the first pipe downstream temperature detector 18 when the fluid heating device 3 is in a starting state or the like, and when the fluid heater 3 is in a steam generating state, the first fluid temperature detector 12 is used. Be controlled.

  As shown in FIG. 11, the microcomputer 43 includes a CPU 43a and a memory 43b. The CPU 43a is input with detection signals from the fluid temperature detectors 12 and 32 and the pipe temperature detectors 17, 18, and 37, and activation signals from measurement signals of the activation switch 22 and the timer 23. Based on these input signals, the energization to each heater 16a, 16b, 36 is controlled. The second heater 16b is controlled by the first pipe downstream temperature detector 18 when the fluid heating device 3 is in a starting state, and the first fluid temperature detector when it is in a steam generating state. 12 is controlled. The third heater 36 is controlled by the second pipe temperature detector 37 when the fluid heating device 3 is in a starting state, and the second fluid temperature detector 32 when it is in the superheated steam generation state. Controlled by.

  Hereinafter, the operation of the fluid heating device 3 will be described based on the flowcharts of FIGS. 12 and 13. In addition, the fluid of this embodiment is water. As this water, it is preferable to use soft water in order to prevent the scale from adhering in the pipeline.

  The microcomputer 43 includes a set temperature T1 on the wall surface of the upstream side 15a of the first pipe line 15, a set temperature T2 on the wall surface of the downstream side 15b of the first pipe line 15, a set temperature T3 of steam generated by the first heating unit 11, a second A setting signal based on the set temperature T4 at the center of the wall surface of the pipe 35, the set temperature T5 of the superheated steam generated by the second heating unit 31, and the set energization time t1 of the feed water pump 20 is input (step S50).

  In step S50, when the setting signal is input, the microcomputer 33 constantly monitors whether the start switch 22 is turned on (standby state, step S51).

  In step S51, when the microcomputer 33 determines that the start switch 22 is turned on, the temperature Ta of the upstream side 15a wall surface of the first pipeline 15 is detected by the first pipeline upstream temperature detector 17 (step S52). .

  When the temperature Ta of the upstream side 15a wall surface of the first pipeline 15 has reached the set temperature T1 in step S52, the temperature Tb of the downstream side 15b wall surface of the first pipeline 15 is detected (step S53). On the other hand, when the set temperature T1 has not been reached, the first heater 16a is energized (step S54), and then the process returns to step S52.

  When the temperature Tb of the wall surface 15b on the downstream side 15b of the first pipeline 15 has reached the set temperature T2 in step S53, the temperature Td near the center of the second pipeline 35 is detected (step S56). On the other hand, when the set temperature T2 has not been reached, the second heater 16b is energized (step S55), and then the process returns to step S52.

  When the temperature Td at the center of the wall surface of the second duct 35 has reached the set temperature T4 in step S56, it is determined whether or not the first heater 16a is energized (step S57). On the other hand, when the set temperature T4 has not been reached, the third heater 36 is energized (step S58), and then the process returns to step S52.

  When energization to the first heater 16a is stopped in step S57, it is determined whether or not the second heater 16b is energized (step S59). On the other hand, when the first heater 16a is energized, the energization to the first heater 16a is stopped (step S60), and then the process proceeds to step S59.

  When energization to the second heater 16b is stopped in step S59, it is determined whether or not the third heater 36 is energized (step S61). On the other hand, when the second heater 16b is energized, the energization of the second heater 16b is stopped (step S62), and then the process proceeds to step S61.

  When energization to the third heater 36 is stopped in step S61, the water supply pump 20 is energized (step S63). On the other hand, when the third heater 36 is energized, the energization to the third heater 36 is stopped (step S64), and then the process proceeds to step S63.

  In step S63, the timer 23 is energized at the same time as the water supply pump 20 is energized, and the first heater 16a is energized (step S65 and step S66). When the timer 23 is energized, the time t after the energization of the water supply pump 20 is detected by the timer 23.

  When the first heater 16a is energized in step S66, it is confirmed whether or not the time t after energizing the feed water pump 20 has reached the set energization time t1 (step S67).

  When the time t since the energization of the feed water pump 20 has reached the set energization time t1 in step S67, the energization of the feed water pump 20 and the first heater 16a is stopped (step S68).

  When energization to the feed water pump 20 and the first heater 16a is stopped in step S68, it is determined whether or not the second heater 16b is energized (step S69).

  When energization to the second heater 16b is stopped in step S69, it is determined whether or not the third heater 36 is energized (step S71). On the other hand, when the second heater 16b is energized, the energization to the second heater 16b is stopped (step S70), and then the process proceeds to step S71.

  When energization to the third heater 36 is stopped in step S71, the process returns to step S52. On the other hand, when the third heater 36 is energized, after the energization of the third heater 3 is stopped (step S72), the process proceeds to step S52.

  When the time t after energizing the feed water pump 20 in step S67 does not reach the set energization time t1, the temperature Tc of the steam generated in the first heating unit 11 is detected (step S73).

  When the steam temperature Tc detected by the first fluid temperature detector 12 in step S73 has reached the set temperature T3, the temperature Te of the superheated steam generated by the second heating unit 31 is detected by the second fluid temperature detector 32. Detection is performed (step S75). On the other hand, when the steam temperature Tc has not reached the set temperature T3, the second heater 16b is energized (step S74), and then the process returns to step S73.

  In step S75, when the temperature Te of the superheated steam generated by the second heating unit 31 has reached the set temperature T5, the process returns to step S67. On the other hand, when the temperature Te of the superheated steam generated by the second heating unit 31 has not reached the set temperature T5, the third heater 36 is energized (step S76), and the process returns to step S75.

  According to the present embodiment, the fluid heating device 3 includes the pipe 41, so that it is not necessary to provide the joint 40 described in the second embodiment between the first pipe 15 and the second pipe 35. . Thereby, the fluid heating device 3 can be configured as an integrated type, and the fluid heating device 3 as a whole can be downsized.

  Moreover, since it is not necessary to provide a joint etc. between the 1st pipe line 15 and the 2nd pipe line 35, the 1st heating part 11 and the 2nd heating part 31 can be set to a desired space | interval. For example, by setting the pipeline length of the pipeline 41 located between the first heating unit 11 and the second heating unit 31 to be short, the pipeline 41 is located between the first heating unit 11 and the second heating unit 31. Since heat radiation from the pipe 41 is suppressed, it is possible to prevent the temperature of the steam passing through the pipe 41 from being lowered. Therefore, the steam generated by the first heating unit 11 is supplied to the second heating unit 31 while maintaining a high quality state.

  Furthermore, the energization to the first heater 16a is continued, the energization to the second heater 16b is controlled based on the first fluid temperature detector 12, and the energization to the third heater 36 is controlled to the second fluid temperature. By controlling based on the detector 32, the temperature and flow rate of the heating fluid generated by the first heating unit 11 and the second heating unit 31 can be reliably stabilized. Moreover, the temperature stability in the 1st pipe line 15 is maintainable by continuing energization to the 1st heater 16a. Furthermore, for example, by controlling the temperature of the first heater 16a to a temperature at which nucleate boiling occurs, the amount of electric power supplied to the first heater 16a can be kept low, so the second heater 16b and the third heater The amount of power supplied to 36 can be increased. Other operations and effects are the same as those of the second embodiment.

  FIG. 14 shows a fourth embodiment of the present invention, and shows a front sectional view showing another example of the fluid heating apparatus according to the first embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 14, the fluid heating device 4 is provided with a T-shaped pipe 51 between the fluid inlet on the upstream 15 a side of the first pipe 15 and the feed water pump 20, and the other fluid of the T-shaped pipe 51. It differs from the first embodiment in that a safety valve 56 is provided at the outlet.

  The operation of the fluid heating device 4 configured as described above will be described. In addition, the fluid of this embodiment is water. As this water, it is preferable to use soft water in order to prevent the scale from adhering in the pipeline.

  The fluid heating device 4 generates steam as in the first embodiment. A safety valve connected to the other fluid outlet of the T-shaped pipe 51 when the upstream side of the first heating unit 11 is pressurized and closed when steam is generated in the first pipe line 15. 56 is opened. Thereby, supply of the water to the upstream of the 1st heating part 11 stops.

  According to the present embodiment, by opening the safety valve 56 of the T-shaped tube 51 at the same time as the first heating unit 11 is closed, the inside of the first heating unit 11 is prevented from becoming a high pressure, and there is a problem such as rupture. Can be prevented. Other configurations and operations are the same as those in the first embodiment.

  In addition, although the said 1st Embodiment and the said 4th Embodiment demonstrated the fluid heating apparatuses 1 and 4 which generate | occur | produce a vapor | steam, by raising the energization amount to each heater 16a, 16b, each heater 16a, The temperature of 16b may be set high to generate superheated steam. Moreover, gas may be supplied to the fluid heating devices 1 and 4 as a fluid to generate heated gas.

  Moreover, although the said 2nd Embodiment and the said 3rd Embodiment demonstrated the fluid heating apparatuses 2 and 3 which generate | occur | produce superheated steam, adjusting the energization amount to each heater 16a, 16b, 36, steam is adjusted. You may make it produce | generate. Alternatively, a gas may be supplied as fluid to the fluid heating devices 2 and 3 to generate a heated gas.

  Moreover, although the said 4th Embodiment demonstrated the case where the safety valve 56 was provided in the 1st heating part 11, the fluid heating which has the 2nd heating part 31 like the said 2nd Embodiment and the said 3rd Embodiment. A safety valve 56 may be provided in the devices 2 and 3. As a result, when the second heating unit 31 is closed due to pressure, the safety valve 56 is opened to prevent the inside of the first heating unit 11 and the second heating unit 31 from becoming high pressure, and rupture. It is possible to prevent problems such as these.

  In the previous first to fourth embodiments, the first pipe upstream temperature detector 17 and the first pipe downstream temperature detector 18 are inserted into the insertion hole 11a of the first holding portion 14. However, it may be embedded in the first holding part 14. The same applies to the second pipe temperature detector 37.

  In addition, the first to fourth embodiments have an acid solvent supply device for supplying an acid solvent, so that an acid such as citric acid can be used in the device before and after use and in each of the pipes 15 and 35. You may wash | clean regularly with a solvent. Thereby, scales, such as calcium dissolved in water, can be prevented from adhering to the inside of the apparatus.

  In the first to fourth embodiments, the heat transfer member 19 is a SUS sphere. However, if the heat transfer member 19 can transfer heat to a fluid, the heat transfer member 19 may be a sintered metal, a foam metal, What is necessary is just at least one among a metal plate, a metal steel ball, or metal wool.

  Furthermore, in the said 1st Embodiment and the said 4th Embodiment, although the 1st holding | maintenance part 14 and the 1st pipe line 15 were comprised with the aluminum body, and the heat-transfer member 19 was comprised with stainless steel, stainless steel, aluminum, copper, What is necessary is just to be comprised with metal with favorable heat conductivity, such as iron.

  Furthermore, in the second embodiment and the third embodiment, the first holding part 14, the first pipe line 15, the second holding part 34, and the second pipe line 35 are made of an aluminum body, and the heat transfer member 19 is used. Is made of stainless steel as long as it is made of a metal having good thermal conductivity such as stainless steel, aluminum, copper, and iron.

Front sectional drawing of the fluid heating apparatus which concerns on 1st Embodiment of this invention. AA line sectional view of the fluid heating device shown in FIG. The block diagram which shows the control circuit of the fluid heating apparatus shown in FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. Front sectional drawing of the fluid heating apparatus which concerns on 2nd Embodiment of this invention. BB sectional view of the fluid heating apparatus shown in FIG. The block diagram which shows the control circuit of the fluid heating apparatus shown in FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. Front sectional drawing of the fluid heating apparatus which concerns on 2nd Embodiment of this invention. The block diagram which shows the control circuit of the fluid heating apparatus shown in FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. The flowchart which shows the vapor | steam production | generation control by the fluid heating apparatus shown in FIG. Front sectional drawing which shows another example of the fluid heating apparatus which concerns on 1st Embodiment of this invention. Schematic front view according to a conventional example of the present invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2, 3, 4 ... Fluid heating apparatus, 11 ... 1st heating part, 12 ... 1st fluid temperature detector, 13 ... Microcomputer, 15 ... 1st pipe line, 16, 36 ... Heating heater, 17 ... 1st 1 pipe upstream temperature detector, 18 ... first pipe downstream temperature detector, 19 ... heat transfer member, 31 ... second heating unit, 32 ... second fluid temperature detector, 35 ... second pipe, 37: Second pipe temperature detector.

Claims (21)

A first conduit for passing a fluid such as gas or liquid; a first heater for heating the upstream side of the first conduit; a second heater for heating the downstream side of the first conduit; A first pipe, a first holding unit for holding the first heater and the second heater, first pipe upstream temperature detecting means for detecting a temperature upstream of the first pipe, 1st heating means provided with the 1st pipe line downstream side temperature detection means which detects the temperature of the downstream of 1 pipe line,
First fluid temperature detection means for detecting the temperature of the fluid heated in the first heating means;
A heating fluid such as a predetermined steam or superheated steam based on at least one detected temperature of the first pipe upstream temperature detecting means, the first pipe downstream temperature detecting means, or the first fluid temperature detecting means. And a control means for controlling at least one of the first heater and the second heater so as to generate a fluid heater. A first conduit for passing a fluid such as gas or liquid; a first heater for heating the upstream side of the first conduit; a second heater for heating the downstream side of the first conduit; A first pipe, a first holding unit for holding the first heater and the second heater, first pipe upstream temperature detecting means for detecting a temperature upstream of the first pipe, 1st heating means provided with the 1st pipe line downstream side temperature detection means which detects the temperature of the downstream of 1 pipe line,
A second conduit that communicates with the first conduit and passes the fluid heated by the first heating means; a third heater that heats the second conduit; the second conduit and the second conduit; 3 a second heating means comprising a second holding part for holding the heater, and a second pipe temperature detecting means for detecting the temperature of the second pipe line,
Second fluid temperature detection means for detecting the temperature of the fluid heated in the second heating means;
Based on at least one detected temperature of the first pipeline upstream temperature detection means, the first pipeline downstream temperature detection means, the second pipeline temperature detection means, or the second fluid temperature detection means, a predetermined steam, A fluid heating apparatus comprising: control means for controlling at least one of the first to third heaters so as to generate a heating fluid such as superheated steam. The control means continues energization to the first heater and controls energization to the second heater based on the first pipe downstream temperature detecting means or the first fluid temperature detecting means. The fluid heating apparatus according to claim 1. The fluid heating device according to claim 1 or 3, wherein a metal heat transfer member is accommodated in the first pipe line so that the fluid can flow therethrough. The fluid heating apparatus according to claim 1 or 3, wherein a voltage stabilizer is provided in at least one of the first heater and the second heater. The said 1st pipe line, the said 1st holding | maintenance part, and the said heat-transfer member consist of metals with favorable heat conductivity, such as stainless steel, aluminum, copper, iron, etc. Any one of Claim 4 or Claim 5 characterized by the above-mentioned. The fluid heating apparatus according to claim 1. A first fluid temperature detecting means for detecting the temperature of the fluid heated in the first heating means; the first pipe upstream temperature detecting means; the first pipe downstream temperature detecting means; and the second pipe temperature. The first heater to the third heater are configured to generate a heating fluid such as predetermined steam or superheated steam based on at least one detection temperature of the detection means, the first fluid temperature detection means, or the second fluid temperature detection means. The fluid heating apparatus according to claim 2, further comprising a control unit that controls at least one of the heaters. The control means continues energization to the first heater, controls energization to the second heater based on the first pipe downstream temperature detecting means, and energizes the third heater to the first heater. The fluid heating device according to claim 2, wherein the fluid heating device is controlled based on two-pipe temperature detecting means or second fluid temperature detecting means. The control means continues energization to the first heater, controls energization to the second heater based on the first pipe downstream temperature detecting means or the first fluid temperature detecting means, and the third The fluid heating apparatus according to claim 7, wherein energization of the heater is controlled based on the second pipe temperature detection means or the second fluid temperature detection means. The fluid heating device according to claim 2 or 7, wherein the second conduit is formed integrally with the first conduit. The fluid heating apparatus according to claim 2 or 7, wherein a voltage stabilizer is provided in at least one of the first heater to the third heater. The metal heat transfer member is accommodated in at least one of the first pipe and the second pipe in a state in which the fluid can flow. 8 or 7. Fluid heating device. The first pipe line, the second pipe line, the first holding part, the second holding part, and the heat transfer member are made of a metal having good thermal conductivity such as stainless steel, aluminum, copper, and iron. The fluid heating apparatus according to claim 12, characterized in that: The fluid heating device according to claim 2 or 7, wherein an outer periphery of the second holding part is covered with a heat insulating material. The first pipe upstream side temperature detecting means is disposed in the vicinity of the fluid inlet of the first pipe line, and the first pipe downstream temperature detecting means is disposed in the vicinity of the fluid outlet of the first pipe line. The fluid heating apparatus according to any one of claims 1 to 14, wherein the fluid heating apparatus is provided. The first pipe upstream temperature detecting means and the first pipe downstream temperature detecting means are embedded in the first holding portion. The fluid heating apparatus as described. The safety valve which discharges | emits the fluid in this 1st pipe | tube outside to the fluid inlet_port | entrance vicinity of the said 1st pipe line is provided. The one side of Claim 1 thru | or 16 characterized by the above-mentioned. Fluid heating device. The fluid heating device according to claim 4 or 12, wherein the heat transfer member is made of at least one of sintered metal, foam metal, metal plate, metal steel ball, or metal wool. The fluid heating device according to claim 1, further comprising an acid solvent supply device that supplies the acid solvent into the first pipe line. The fluid heating apparatus according to claim 2 or 7, further comprising an acid solvent supply device that supplies an acid solvent to at least one of the first pipe line and the second pipe line. The fluid heating device according to any one of claims 1 to 20, wherein an outer periphery of the first holding unit is covered with a heat insulating material.

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