JP6632422B2 - heater - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a heater using superheated steam.

  2. Description of the Related Art Conventionally, there has been known a heater capable of heating a room while maintaining the room at an appropriate humidity by using superheated steam (for example, Patent Document 1). A conventional heater using superheated steam heats water supplied to a water storage portion of an annular container by a sheathed heater arranged inside the annular container, and discharges superheated steam from a discharge hole at an upper portion of the water storage portion. The superheated steam and the hot air are mixed in the upper part of the water storage part, and the hot air containing the superheated steam is blown out in a predetermined blowing direction by the blower fan at the upper part.

JP-A-2010-78249

  However, the conventional heater using superheated steam has a problem that it lacks convenience because the device is large-scale.

  Therefore, an object of the present invention is to provide a heater that is more compact and more convenient than before.

  In order to achieve the above object, first, the present invention relates to a heater (1) in which a constant gap is provided inside a coil support tube (11) in which a coil (13) is wound around an outer peripheral surface. A heat-resistant tube (12) is arranged at a distance, and a heat-generating element (21) is housed inside the heat-resistant tube (12) .The heat-generating element (21) is supplied by flowing an alternating current through the coil (13). ), The water supplied from one end of the heat-resistant tube (12) is changed to superheated steam, and the superheated steam module (2) discharged from the other end of the heat-resistant tube (12), and the superheated steam module ( 2) can be stored inside, and a cylindrical module case (3) that forms a ventilation space (R) between the superheated steam module (2), and air to the ventilation space (R). The blower (42) to be blown in, the air blown out from the blower space (R), and the superheat discharged from the superheated steam module (2) A nozzle (4) for mixing the steam with the steam to blow out the hot air.

  The heater (1) having such a configuration can generate superheated steam in the flow path of the water supplied from one end of the heat-resistant pipe (12), and thus can be made smaller than before.

  Secondly, the present invention provides the heater (1) having the first configuration, wherein the module case (3) has a supply pipe (45) for supplying air to the superheated steam module (2). The superheated steam module (2) is characterized in that the air supplied from the supply pipe (45) is introduced into the gap and heated, and the heated air is led out to the blowing space (R). Configuration.

  According to such a configuration, the air discharged from the nozzles 4 can be heated in advance, so that the heating efficiency is improved.

  Third, the present invention provides the heater (1) having the first or second configuration, wherein the heating element (21) generates an eddy current by a change in magnetic flux density generated inside the heat-resistant tube (12). A ring portion (22) to be generated and a plurality of fins (23) provided in parallel with each other at a predetermined interval inside the ring portion (22) are provided.

  According to such a configuration, heat exchange can be efficiently performed when water or steam passes between the plurality of fins (23).

  ADVANTAGE OF THE INVENTION According to the heater of this invention, miniaturization is possible compared with the former, and convenience can be improved.

FIG. 3 is an exploded perspective view illustrating a configuration of a heater. FIG. 3 is an exploded perspective view illustrating components of a superheated steam module. It is a figure showing the details of a heating element. It is a figure showing an example of arrangement of a plurality of heating elements. It is a figure showing the heat generation principle of a heating element. It is sectional drawing of a superheated steam module. It is a figure which shows the example of the eddy of water or steam which arises inside a heat-resistant case. It is sectional drawing which shows the state in which each component member of the heater was assembled.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments described below, members common to each other are denoted by the same reference numerals, and redundant description thereof will be omitted.

  FIG. 1 is an exploded perspective view showing a configuration of a heater 1 using superheated steam according to an embodiment of the present invention. The heater 1 has a superheated steam module 2 that generates superheated steam, and a tubular module case that can house the superheated steam module 2 inside and forms a ventilation space between the superheated steam module 2 and the outer peripheral surface thereof. 3, a blower 42 attached to the outside of the module case 3 and blowing air into a blowing space between the superheated steam module 2 and the module case 3, and a blower 42 attached to one end of the module case 3, The module includes a nozzle 4 for blowing hot air containing water vapor and an end cap 5 attached to the other end of the module case 3.

  FIG. 2 is an exploded perspective view showing constituent members of the superheated steam module 2. The superheated steam module 2 includes a tubular heat-resistant case 10 that takes in water from one end and discharges superheated steam from the other end, a coil 13 formed by winding a conductive wire around the outer peripheral surface of the heat-resistant case 10, and a heat-resistant case. A heat generating module 20 provided inside the heat-resistant case 10, a supply unit 15 provided at one end of the heat-resistant case 10 to supply water to the inside of the heat-resistant case 10, and a heat-generating module 20 provided at the other end of the heat-resistant case 10 to discharge superheated steam And a nozzle unit 14. Both ends of the coil 13 are connected to a coil driving unit 31 described later, and the coil driving unit 31 allows an alternating current to flow through the coil 13.

  The heat-resistant case 10 is, for example, a cylindrical case having a length of about several tens of cm and an outer diameter of about several cm. The heat-resistant case 10 has two members, a coil support tube 11 and a heat-resistant tube 12, and has a configuration in which the heat-resistant tube 12 is arranged inside the coil support tube 11. The coil support tube 11 is formed of a material having excellent electrical insulation and heat resistance such as mica, for example, and has a configuration in which flange portions 11a and 11b are provided at both ends in the longitudinal direction. A coil 13 is wound around the outer peripheral surface of the coil support tube 11. On the other hand, the heat-resistant tube 12 is formed of, for example, ceramics having excellent heat resistance and heat insulation, and has an outer diameter smaller than the inner diameter of the coil support tube 11. The heat-resistant tube 12 is inserted and mounted inside the coil support tube 11 in a state where a certain gap is formed between the heat-resistant tube 12 and the inner wall of the coil support tube 11.

  Further, the coil support tube 11 has inlets 16 for introducing air to the inside at two outer peripheral surfaces near both ends thereof, and also guides the air inside the coil support tube 11 to the outside at four central outer peripheral surfaces. It has an outlet 17. The inlet 16 is a cylindrical opening for introducing air into the gap between the inner wall of the coil support tube 11 and the outer wall of the heat-resistant tube 12, and the outlet 17 is provided with an inner wall of the coil support tube 11 and the heat-resistant tube 12. Opening for guiding air to the outside from a gap between the outer wall and the outer wall.

  The supply unit 15 has a supply port 15a through which water flows, and a flange 15b. The supply portion 15 is attached to one end of the heat-resistant case 10 by joining the flange portion 15b to the flange portion 11b of the coil support tube 11 and fixing the flange portion 15b with a screw or the like. The supply section 15 has a metal gasket 18b (see FIG. 6) inside. Then, the metal gasket 18b comes into contact with one end of the heat-resistant tube 12 provided inside the coil support tube 11, and seals the peripheral edge of the end of the heat-resistant tube 12.

  The nozzle portion 14 has a discharge port 14a for discharging superheated steam, and a flange portion 14b. The nozzle portion 14 is attached to the other end of the heat-resistant case 10 by joining the flange portion 14b to the flange portion 11a of the coil support tube 11 and fixing the flange portion 14b with a screw or the like. The nozzle portion 14 also has a metal gasket 18a (see FIG. 6) inside. The metal gasket 18a comes into contact with the other end of the heat-resistant tube 12 provided inside the coil support tube 11, and the end of the heat-resistant tube 12 Seal the peripheral edge.

  The coil 13 is disposed in a state of being wound around the outer peripheral surface between the flange portions 11a and 11b of the coil support tube 11. However, the coil 13 is wound around the outer peripheral surface of the coil support tube 11 except for the portion where the inlet 16 and the outlet 17 are formed in the coil support tube 11. The coil density (the number of turns per unit length in the longitudinal direction) of the coil 13 is higher at the supply port 15a side than at the central portion in the longitudinal direction of the heat-resistant case 10. For example, the coil 13 is doubled at a position near the supply port 15a. The coil 13 is formed in a single winding state on the nozzle portion 14 side with respect to the central portion of the heat-resistant case 10 and the central portion. That is, in the passage of water inside the heat-resistant tube 12, the coil density on the upstream side is higher than the coil density on the downstream side.

  The heat-generating module 20 includes a plurality of heat-generating elements 21 provided inside the heat-resistant tube 12 and in close contact with each other along the longitudinal direction of the heat-resistant tube 12. The plurality of heating elements 21 are held in close contact with each other by a guide member 19 formed of, for example, a stainless steel wire.

  3A and 3B are diagrams showing details of the heating element 21. FIG. 3A is a front perspective view of the heating element 21, FIG. 3B is a rear perspective view of the heating element 21, and FIG. c) shows a cross-sectional view of the heating element 21. Note that an arrow F shown in FIG. 3 indicates a direction in which water or water vapor passes. The heating element 21 is, for example, a substantially disk-shaped stainless steel member having an outer diameter slightly smaller than the inner diameter of the heat-resistant tube 12. The heating element 21 is formed to have a diameter of, for example, 10 to 20 mm and a thickness of several millimeters (about 1 to 3 mm). As shown in FIG. 3, the heating element 21 has an annular ring portion 22 and a plurality of fins 23 provided in parallel with each other at a predetermined interval inside the ring portion 22. In this configuration, a slit for allowing water or water vapor to pass through is formed.

  The ring portion 22 is provided with a plurality of holes 24 penetrating from the front surface to the back surface at substantially equal intervals in the circumferential direction. For example, in FIG. 3, nine holes 24 are provided in the ring portion 22, and the nine holes 24 are provided at positions rotated by 40 degrees with respect to the center axis of the ring portion 22. The plurality of holes 24 are holes through which the above-described guide member 19 is inserted. A plurality of protrusions 25 are provided on the surface of the ring portion 22 at substantially equal intervals in the circumferential direction. For example, in FIG. 3A, nine protrusions 25 are provided, and the nine protrusions 25 are provided at positions between two adjacent holes 24, respectively. That is, these nine protrusions 25 are also provided at positions rotated by 40 degrees with respect to the center axis of the ring portion 22. Further, on the back surface of the ring portion 22, a plurality of concave portions 26 are provided at substantially equal intervals in the circumferential direction. For example, in FIG. 3B, nine concave portions 26 are provided, and the nine concave portions 26 are provided at positions between two adjacent holes 24, respectively. That is, these nine concave portions 26 are also provided at positions rotated by 40 degrees with respect to the center axis of the ring portion 22.

  Each of the plurality of fins 23 is configured to gradually reduce the interval between another fin 23 adjacent from one side in the axial direction of the ring portion 22 to the other side. That is, as shown in FIG. 3C, each of the plurality of fins 23 has a substantially triangular cross-sectional shape, and one vertex of the triangle is connected to one axial side of the ring portion 22 (water or water vapor The ring portion 22 is disposed so as to face the upstream side in the flowing direction (downstream in the direction in which water or steam flows) while the bottom side faces the other side in the axial direction of the ring portion 22 (downstream side in the direction in which water or steam flows). By gradually reducing the interval between each of the plurality of fins 23 and the adjacent fins 23 along the direction in which water or steam flows, when the water or steam passes through the inside of the ring portion 22, the water or steam is compressed. The fins 23 can be later expanded, and water and steam can reliably collide (contact) with the fins 23.

  Such a heating element 21 has a plurality of heating elements formed by fitting projections 25 formed on the surface of the ring portion 22 into recesses 26 formed on the back side of another heating element 21 adjacent on the surface side. The ring portions 22 of the element 21 can be brought into close contact with each other. In the present embodiment, each of the plurality of heating elements 21 is arranged inside the heat-resistant case 10 so as to be rotated by a predetermined angle with respect to another adjacent heating element 21 along the longitudinal direction of the heat-resistant case 10. And make it adhere.

  FIG. 4 is a diagram illustrating an example of the arrangement of the plurality of heating elements 21a to 21i. An arrow F shown in FIG. 4 indicates a direction in which water or water vapor passes. As shown in FIG. 4, when the plurality of heating elements 21a to 21i are sequentially mounted along the axial direction, each of the heating elements 21 is mounted in a state of being rotated by, for example, 40 degrees. At this time, the plurality of protrusions 25 provided on the front surface side of each heating element 21 match the positions of the plurality of recesses 26 formed on the back surface side of another heating element 21 adjacent to the front surface side. Therefore, even if the plurality of heating elements 21a to 21i are sequentially rotated by 40 degrees, the projections 25 formed on the surface of the ring portion 22 can be attached to the back side of another heating element 21 adjacent on the surface side. The ring portions 22 of the plurality of heating elements 21a to 21i can be brought into close contact with each other.

  The holes 24 provided in each of the plurality of heating elements 21a to 21i are present at the same position even when each heating element 21 is rotated by 40 degrees. Therefore, when the plurality of heating elements 21 are brought into close contact with each other, the positions of the holes 24 provided in each of the plurality of heating elements 21 a to 21 i are all the same. And the plurality of heat generating elements 21 can be kept in close contact with each other. By bending the guide members 19 at both ends of the heat generating module 20, it is possible to prevent each of the heat generating elements 21 from separating from the guide members 19. The guide members 19 need only be attached to the heat generating module 20 about two or three, and the guide members 19 need not necessarily be attached to all of the nine holes 24.

  As described above, when the plurality of heating elements 21 are mounted while being rotated one by one by a predetermined angle, the heating module 20 is in a state where the slits for passing water or water vapor are sequentially rotated. For example, in the present embodiment, the slit is rotated by 40 degrees, so that the slit is rotated once (360 degrees) by the nine heating elements 21 arranged continuously. By such rotation of the slit, a spiral vortex can be formed in water or water vapor that advances inside the heat-resistant tube 12 toward the discharge port 14a. The rotation direction of the slit can be adjusted by the rotation direction when the plurality of heating elements 21 are arranged in a state of being rotated by a predetermined angle. In the present embodiment, the heat generating module 20 configured as described above is arranged over almost the entire area in the longitudinal direction of the heat-resistant case 10 (heat-resistant tube 12).

  FIG. 5 is a diagram illustrating the heat generation principle of the heat generation element 21. When a high-frequency coil current Icoil flows through the coil 13, the magnetic flux density B inside the heat-resistant case 10 changes according to the coil current Icoil. This change in the magnetic flux density B acts in a direction perpendicular to the ring portion 22 of the heating element 21. Then, an eddy current Ie is induced in the ring portion 22 of the heating element 21 by the change in the magnetic flux density B. That is, the ring portion 22 functions as a kind of coil. Since such a ring portion 22 is provided at right angles to the direction in which the magnetic flux density B changes, and is provided in an annular shape along the inner wall of the heat-resistant tube 12, the eddy current Ie Can be generated with high efficiency. That is, in the present embodiment, a relatively large eddy current Ie can be passed through the ring portions 22 of the individual heating elements 21 by passing a high-frequency coil current Icoil through the coil 13. This eddy current Ie is converted into heat energy, and causes the heating element 21 to generate heat. The amount of heat generated by the heat generating element 21 is determined by the eddy current Ie. In the present embodiment, a large amount of eddy current Ie can flow through the ring portion 22, so that the amount of heat generated by the heat generating element 21 can be increased. As a result, not only the ring portion 22 but also each of the plurality of fins 23 is heated to a high temperature state. Each of the plurality of heating elements 21 exhibits a heating action according to a change in the magnetic flux density B generated inside the heat-resistant case 10, so that the internal space of the heat-resistant tube 12 through which water or water vapor passes is heated.

  FIG. 6 is a cross-sectional view of the superheated steam module 2 in a state where the components configured as described above are assembled. As shown in FIG. 6, a conductive cable 30 is connected to both ends of the coil 13 wound around the outer peripheral surface of the coil support tube 11. The coil drive unit 31 for flowing the coil is connected. The coil drive unit 31 is connected to a general AC power supply 32 such as a commercial power supply or a home power supply, generates an AC current Icoil of a predetermined frequency using an inverter circuit or the like, and causes the AC current Icoil to flow to the coil 13.

  The superheated steam module 2 uses a portion where the coil density on the supply port 15a side is higher than the central portion of the heat-resistant case 10 as a saturated steam generation region, and uses a portion downstream of the saturated steam generation region as a superheated steam generation region. Use as an area. That is, the superheated steam module 2 of the present embodiment realizes a region in which water is heated to generate saturated steam and a region in which saturated steam is further heated to generate superheated steam in one unit. . By suppressing the amount of water supplied from the supply port 15a to a predetermined upper limit or less, such a superheated steam module 2 does not discharge water droplets or the like from the discharge port 14a, and can appropriately remove the superheated steam heated to a predetermined temperature. Can be discharged.

  In the saturated steam generation region where the coil density is high, the plurality of heating elements 21 are combined so that the rotation directions of the slits of the heating element 21 are two directions, forward and reverse. For example, the nine heating elements 21 arranged at the end on the side of the supply port 15a are rotated one clockwise direction by 40 degrees one by one to rotate the slit one clockwise direction, and the next nine heating elements 21 are rotated. Numeral 21 rotates the slit in the counterclockwise direction by rotating the slits one by one in the counterclockwise direction by 40 degrees. In the saturated water vapor generation region, a plurality of heat generating elements 21 are arranged so as to repeat the rotation in the two forward and reverse directions.

  FIG. 7 is a diagram illustrating an example of a vortex of water or steam generated inside the heat-resistant case 10. In the saturated steam generation region, the plurality of heating elements 21 are arranged so as to repeat the rotation in the normal and reverse two directions as described above, so that the water supplied from the supply port 15a discharges inside the heat-resistant case 10 through the discharge port. As it progresses toward 14a, a clockwise vortex and a counterclockwise vortex alternate. When water or water vapor passes through the plurality of heating elements 21 provided in the saturated water vapor generation region, a portion corresponding to a switching position between the clockwise vortex and the counterclockwise vortex becomes a resistance, and the water or water vapor is generated in that portion. The steam collides (contacts) with the fins 23 which have generated heat in a high temperature state, and directly receives heat exchange from the fins 23. Although FIG. 7 illustrates a case where the clockwise vortex and the counterclockwise vortex occur once each, the clockwise vortex and the counterclockwise vortex may be switched plural times.

  Further, since the coil density of the coil 13 is high in the saturated water vapor generation region, the plurality of heating elements 21 are heated to at least one hundred degrees to one hundred and several tens degrees even when receiving a cooling action by water. Since the water or the steam proceeds toward the downstream side while repeating compression, expansion, collision, and rotation (vortex rotation) in the saturated steam generation region, the water flowing from the supply port 15a is converted into the saturated steam generation region. Can be surely changed into saturated steam (phase transition). Therefore, only the saturated steam can proceed to the superheated steam generation area downstream of the saturated steam generation area, and it is possible to prevent the water from entering the superheated steam generation area from the saturated steam generation area.

  On the other hand, in the superheated steam generation region, the saturated steam generated in the saturated steam generation region is further heated to generate superheated steam. In this superheated steam generation region, the plurality of heating elements 21 are combined so that the rotation direction of the slit of the heating element 21 is one direction. For example, the plurality of heating elements 21 provided in the superheated steam generation region are rotated one by one in the clockwise direction by 40 degrees to continuously rotate the slit in the clockwise direction. In the superheated steam generation region, a plurality of heating elements 21 are arranged so as to repeat such one-way rotation. Thus, when the saturated steam flowing from the saturated steam generation region proceeds inside the heat-resistant case toward the discharge port 14a, a vortex that always rotates in one direction is generated as shown in FIG. That is, in the superheated steam generation region, since there is no resistance due to the switching of the rotation direction, the superheated steam or the saturated steam proceeds inside the heat-resistant case 10 at a constant speed. However, when the superheated steam or the saturated steam passes through the slits between the plurality of fins 23 provided on each heating element 21, the steam advances toward the downstream side while repeating compression, expansion, collision, and rotation (vortex rotation). This point is the same as in the saturated steam generation region.

  In the superheated steam generation region, the coil density of the coil 13 is lower than that in the saturated steam generation region. Therefore, in the portion where the saturated steam generation region is shifted to the superheated steam generation region (the portion where the number of turns of the coil 13 is reduced), heat resistance is reduced. The change in the magnetic flux density B generated inside the case 10 is smaller than that in the saturated steam generation region, and the eddy current Ie generated in the ring portion 22 of the heating element 21 is relatively small. Therefore, in a portion where the saturated steam generation region has shifted to the superheated steam generation region, the amount of heat generated by the heating element 21 is suppressed. On the other hand, since water does not enter the superheated steam generation region, the heating element 21 is not subjected to the cooling action by water. Therefore, although the amount of heat generated by the heating element 21 is suppressed in the superheated steam generation region, the temperature of the heating element 21 provided in the superheated steam generation region is higher than that of the heating element 21 provided in the saturated steam generation region. For example, it will be in a high temperature state of about 400 degrees. As a result, in the superheated steam generation region, the saturated steam is further heated, and superheated steam of a predetermined temperature (for example, about 250 degrees) is generated. Then, the superheated steam finally heated to a predetermined temperature is discharged from the discharge port 14a of the nozzle unit 14.

  As described above, in the present embodiment, since the coil density of the coil 13 in the superheated steam generation region is reduced, the inside of the heat-resistant case 10 is in an extremely high temperature state in an empty fired state immediately after water becomes saturated steam. This can prevent the occurrence of an excessive temperature difference in local portions of the heat-resistant tube 12 and the coil support tube 11. Therefore, it is possible to prevent the heat shock due to the temperature difference from being concentrated on a local portion of the heat-resistant case 10, and to prevent the heat-resistant case 10 from being damaged due to the heat shock. As a result, the superheated steam module 2 can generate superheated steam from water with one module, and can reduce the size of the entire module.

  Returning to FIG. 1, the module case 3 has, at one end thereof, an engaging portion 43 which engages with the nozzle portion 14 of the superheated steam module 2 and holds the superheated steam module 2 at the center of the inner space. In addition, the engaging portion 43 has a ventilation port 44 at a peripheral portion thereof. On the other hand, the other end of the module case 3 is entirely open so that the superheated steam module 2 can be inserted inside. The superheated steam module 2 is inserted into the inside of the module case 3 from the other end side of the module case 3 which is fully open, and the nozzle portion 14 is engaged with the engagement portion 43. Then, the end cap 5 is attached to the other end of the module case 3 in a state where the superheated steam module 2 is stored inside the module case 3. The end cap 5 is configured to engage with the supply portion 15 of the superheated steam module 2 and hold the superheated steam module 2 at the center of the module case 3. An opening 5a for exposing the supply port 15a to the outside is formed at a center position of the end cap 5. Therefore, when the end cap 5 is attached to the other end of the module case 3, the supply port 15 a of the superheated steam module 2 is exposed outside from the opening 5 a of the end cap 5. When the superheated steam module 2 is housed inside the module case 3 and the end cap 5 is attached to the other end of the module case 3, the superheated steam module 2 contacts the inner wall of the module case 3 inside the module case 3. Fixed without contact. As a result, a ventilation space is formed between the inner wall of the module case 3 and the outer peripheral surface of the superheated steam module 2.

  A blower 42 composed of a small blower or the like is attached to the outer surface of the module case 3. The blower 42 is for sending air into a blowing space between the superheated steam module 2 and the module case 3, and is attached to, for example, the vicinity of the end cap 5 in the longitudinal direction of the module case 3.

  Further, on the outer peripheral surface of the module case 3, a supply pipe 45 connected to the inlet 16 formed in the superheated steam module 2 is provided. The supply pipe 45 is for injecting room-temperature air into a gap between the coil support pipe 11 and the heat-resistant pipe 12 of the superheated steam module 2.

  The nozzle 4 is attached to one end of the module case 3. This nozzle 4 is configured as a Laval nozzle. That is, the nozzle 4 has large-diameter portions 51 and 53 at both ends and a small-diameter portion 52 having a reduced diameter at the center. Such a nozzle 4 is mounted so that the large diameter portion 51 covers one end of the module case 3.

  FIG. 8 is a cross-sectional view illustrating a state where the respective components of the heater 1 are assembled. As shown in FIG. 8, the heater 1 has a ventilation space R between the module case 3 and the superheated steam module 2. An air pump 50 is connected to the supply pipe 45. The air pump 50 supplies room-temperature air from the inlet 16 of the superheated steam module 2 to the gap between the coil support tube 11 and the heat-resistant tube 12 via the supply tube 45. The air supplied by the air pump 50 passes through a gap between the coil support tube 11 and the heat-resistant tube 12, and blows out from the outlet 17 formed in the coil support tube 11 to the module case 3 and the superheated steam module 2. Outflow into the space R.

  As described above, the superheated steam module 2 causes the heating element 21 to generate heat when an alternating current flows through the coil 13, and the water supplied from the supply port 15 a becomes saturated steam as shown by an arrow F <b> 1, and furthermore, the saturated steam Is heated until it becomes superheated steam, and superheated steam is discharged from the discharge port 14a as shown by an arrow F2. At this time, the temperature of the heat-resistant tube 12 rises to a temperature substantially equal to that of the heating element 21. Therefore, the air supplied to the space between the coil support tube 11 and the heat-resistant tube 12 by the air pump 50 is heated by the heat-resistant tube 12 to, for example, 100 degrees or more. Then, the heated air flows out of the outlet 17 into the ventilation space R between the module case 3 and the superheated steam module 2.

  On the other hand, an airflow X1 from the blower 42 is formed in the blowing space R between the module case 3 and the superheated steam module 2. The heated air flowing out of the outlet 17 into the ventilation space R is mixed with the airflow X1. As a result, the temperature of the airflow X1 formed in the ventilation space R is heated to a temperature suitable for heating. The air thus heated is guided from the ventilation space R to the inside of the nozzle 4 through the ventilation port 44 as shown by an arrow X2. The airflow X2 is mixed with the superheated steam discharged from the discharge port 14a of the superheated steam module 2 at the small diameter portion 52 of the nozzle 4, and expands when flowing from the small diameter portion 52 to the large diameter portion 53 to expand the temperature containing the superheated steam. The wind X3 is emitted from the nozzle 4. Since the hot air X3 blown out from the nozzle 4 contains superheated steam, it is possible to heat the room while keeping the room at an appropriate humidity.

  As described above, the heater 1 of the present embodiment includes the superheated steam module 2, the module case 3, the blower 42, and the nozzle 4. In the superheated steam module 2, the heat-resistant tube 12 is disposed inside the coil support tube 11 around which the coil 13 is wound around the outer peripheral surface with a certain gap therebetween, and the heating element 21 is housed inside the heat-resistant tube 12. The heating element 21 is heated by passing an alternating current through the coil 13 to change water supplied from one end of the heat-resistant tube 12 into superheated steam and discharge the water from the other end of the heat-resistant tube 12. Further, the cylindrical module case 3 can house the superheated steam module 2 inside, and forms a ventilation space R between the module case 3 and the superheated steam module 2. Then, the blower 42 blows air into the blowing space R, and the nozzle 4 mixes the air blown out from the blowing space R with the superheated steam discharged from the superheated steam module 2 to blow hot air. Is done.

  The heater 1 as described above is configured to generate superheated steam by heating water or saturated steam in the process of flowing the water or saturated steam, so that there is no need to provide a water storage unit or the like, and the conventional heater 1 uses superheated steam. It is possible to reduce the size as compared to a heated heater. Therefore, the above-described heater 1 can be installed in a small place, and is excellent in convenience.

  In the above-described heater 1, the module case 3 has the supply pipe 45 that supplies air to the superheated steam module 2. The superheated steam module 2 has a configuration in which the air supplied from the supply pipe 45 is introduced into the gap between the coil support pipe 11 and the heat-resistant pipe 12 and heated, and the heated air is led out to the ventilation space R. Have. According to such a configuration, since the air blown out from the nozzles 4 can be heated in the ventilation space R in advance, there is an advantage that the heating efficiency can be improved.

  As mentioned above, although one Embodiment concerning this invention was described, this invention is not limited to what was demonstrated in the said Embodiment, Various modifications are applicable.

  For example, in the above-described embodiment, the case where the blower 42 is attached to the module case 3 is exemplified. However, the present invention is not limited to this, and the blower 42 may be attached to the end cap 5, for example.

  In the above embodiment, the case where the supply tube 45 is provided in the module case 3 to supply the air between the coil support tube 11 and the heat-resistant tube 12 is exemplified, but there is no limitation to this. For example, the supply pipe 45 described above may be provided on the end cap 5.

DESCRIPTION OF SYMBOLS 1 Heater 2 Superheated steam module 3 Module case 4 Nozzle 5 End cap 11 Coil support tube 12 Heat-resistant tube 13 Coil 21 Heating element 42 Blower 45 Supply tube R Blowing space

Claims (3)

A heat-resistant tube is arranged with a certain gap inside a coil support tube around which a coil is wound around the outer peripheral surface, and a heat-generating element is housed inside the heat-resistant tube, and an alternating current flows through the coil. A superheated steam module that heats the heat generating element to change water supplied from one end of the heat resistant tube into superheated steam and discharges the water from the other end of the heat resistant tube,
A cylindrical module case capable of storing the superheated steam module inside, and forming a ventilation space between the superheated steam module and the superheated steam module;
A blower for sending air to the blowing space,
A nozzle that blows out hot air by mixing air sent out from the blowing space and superheated steam discharged from the superheated steam module,
A heater comprising: The module case has a supply pipe for supplying air to the superheated steam module,
The heating device according to claim 1, wherein the superheated steam module introduces air supplied from the supply pipe into the gap, heats the air, and guides the heated air to the blowing space.   The heating element includes a ring portion that generates an eddy current due to a change in magnetic flux density generated inside the heat-resistant tube, and a plurality of fins provided in parallel with each other at a predetermined interval inside the ring portion. The heater according to claim 1 or 2, wherein

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