JP3753630B2 - Heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating device for leaving injection superheated steam to the heated object.
[0002]
[Prior art]
A heating system using superheated steam has been conventionally used in the industrial field, and is used for drying instant noodles, processing retort foods, and the like.
[0003]
The principle depends on high-speed condensation heat transfer and forced convection heat transfer in an oxygen-free environment, and can be widely used for heating objects that require speed and must not burn or burn. is there.
[0005]
As those utilizing superheated steam consumer, place the food into the cooking chamber, by filling the inside of the cooking chamber by introducing superheated steam generated by the overheated steam generator to the cooking chamber with superheated steam, heated Although what cooks a thing is known (for example, Unexamined-Japanese-Patent No. 2000-184964), there existed a problem that a cooking chamber was required and became large as a heating cooking apparatus, and handling was not easy.
[0006]
Further, as a method for obtaining superheated steam at a high temperature at a low cost, the heating process is a two-stage heating in which steam is generated by the first heating means and reheated by the second heating means to obtain superheated steam. A cooking device has also been proposed (for example, Japanese Patent Application Laid-Open No. 2-198113). However, since the pressure of the steam itself is used as a driving source for the flow direction control, it is difficult to control the flow direction of the steam and the cooking device. There is a problem in that the structure of the device becomes large and handling is not easy.
[0007]
Moreover, in the usage methods other than cooking, the situation is generally the same, and the current situation is that the demand for heating devices has not been stimulated.
[0008]
[Problems to be solved by the invention]
In conventional heating devices, requires a closed Kusarisa cooking chamber for steam jet cooking chamber such as heating device is increased, not choose the usage location, applications are limited. In addition, there are problems such as difficulty in controlling the direction of jetting the steam and lack of convenience.
[0012]
The present invention has been made in view of such circumstances, and the object of the present invention is to provide an air introduction regulating valve in the sealed structure portion, and the internal pressure of the sealed structure portion has become a negative pressure of a predetermined value or less. In such a case, it is an object of the present invention to provide a heating apparatus that can automatically adjust the oxygen content in steam by adopting a structure that introduces the atmosphere into the sealed structure portion from the atmosphere introduction regulating valve.
[0022]
[Means for Solving the Problems]
The heating device of the present invention is disposed between a first heat exchange unit that converts water into steam, a second heat exchange unit that superheats steam, and the first heat exchange unit and the second heat exchange unit. and a blower for sending to the second heat exchanger to suck the generated steam by the first heat exchange portion Te, before Symbol first heat exchange portion and a water inlet and the steam generator outlet, wherein The blower includes a steam suction port and a steam delivery port, the second heat exchange unit includes a steam introduction port and a superheated steam ejection port, and the steam delivery port communicates with the steam introduction port. wherein a sealing structure which is connected between the steam generator inlet, said second heat exchanger is surrounded by the formed surrounding wall to eject the superheated steam to the object to be heated from the superheated steam spout and The first heat exchange unit, the second heat exchange unit, the blower, and the sealing structure unit are connected to each other and integrated. There Te, Ri Thea allows identifying ejection direction of the superheated steam injection, in the heating apparatus for ejecting superheated steam to be heated, equipped with air introduced regulating valve to the closed structure part, the internal pressure of the sealed structure portion When the negative pressure becomes a predetermined value or less, the atmosphere is introduced from the atmosphere introduction regulating valve into the sealed structure portion .
[0038]
Heating apparatus of the present invention includes a air introduction control valve to the closed structure part, when the internal pressure of the sealed structure portion is equal to or less than a predetermined value, introducing the atmosphere from said ambient air intake regulating valve to the closed structure part Ri by the be structured to, automatically be to control the oxygen content in the vapor. In addition, by controlling the air flow rate of the air blower, the internal pressure of the hermetic structure can be controlled to adjust the oxygen content in the steam.
[0048]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments. FIG. 1 is a schematic assembly diagram showing the overall configuration of a heating apparatus according to the present invention. In the figure, reference numeral 1 denotes a heating device according to the present invention, which includes a first heat exchange unit 2, a second heat exchange unit 3, and a blower 4. The first heat exchange unit 2 converts water or hot water into steam at a temperature of 100 ° C. or higher, and the second heat exchange unit 3 further heats the converted steam, for example, high-temperature steam at 200 ° C., so-called superheat. Steam is obtained. The blower 4 is arranged in the middle of the first heat exchange unit 2 and the second heat exchange unit 3 and sucks the steam generated in the first heat exchange unit 2 and sends it to the second heat exchange unit 3. is there. The first heat exchange unit 2, the second heat exchange unit 3, and the blower 4 are connected and integrated with each other, and are attached to the heating device base unit 5. The heating device base unit 5 further includes a holding unit 6, a control circuit unit 7, and a water storage container 8. The link mechanism 9 is an operation unit for controlling the introduction of water, the operation control of the heating device and the like in cooperation with the holding unit 6 and is rotatable about the link rotation shaft 9a as a rotation shaft. The operation of the heating device can be controlled by operation.
[0049]
The heat exchanging part is separated into the first heat exchanging part 2 and the second heat exchanging part 3. Thereby, the 1st heat exchange part 2 with comparatively low temperature can be arrange | positioned near the holding | maintenance part 6 hold | maintained by a user's hand, and the 2nd heat exchange part 3 can be arrange | positioned in the location away from the holding | maintenance part 6. Therefore, safety during use can be secured.
[0050]
The first heat exchanging unit 2 has a sheathed heater 10 that is a cylindrical electric heater having an outer diameter of about 12 mm at the center thereof, and a heat exchanging water pipe that is configured by a stainless steel tube wound around the sheathed heater 10 in a coil shape. The heat exchange water conduit 11 further includes a water introduction port 2a and a steam generation port 2b, converts water introduced from the water introduction port 2a into steam, and generates steam from the steam generation port 2b. Plays a function. As long as the sheathed heater 10 has the above function, it may be a heater of another form. However, by using an electric heater such as a sheathed heater, the first heat exchanging unit 2 can be reduced in size and safety. Securement is possible.
[0051]
The blower 4 includes a steam suction port 4a for sucking steam generated by the first heat exchange unit 2, a steam delivery port 4b for delivering steam, and a blower blade 4c serving as a drive fan for suction delivery, and further includes a steam suction port. 4a is equipped with the sealing structure part 15 which interrupts external air and is connected with the steam generation port 2b. The blower blade 4 c is driven by the drive unit 16.
[0052]
Second heat exchange unit 3, the steam inlet 3a for introducing the steam sent from the steam outlet 4b, the superheated steam spout 3b and about 100 ° C. for ejecting superheated steam steam 200-300 of about ° C. hot The heater 3c is composed of an electric heater such as a nichrome wire that converts steam into so-called superheated steam, and these are surrounded by a surrounding wall 20. The surrounding wall 20 is formed in a nozzle structure, is supplied with steam from the steam inlet 3a, is disposed on the opposite side to the wide steam inlet 3a on the inlet side, and has a superheated steam outlet 3b having a narrow opening shape. since ejecting superheated steam from the steam rate is accelerated, it can be more effectively out injection of superheated steam into the heated object. In addition, the shape of the opening part of the superheated steam jet 3b is circular, and the diameter is shown as φd. The temperature raising heater 3c may be a heater of another form as long as it has the above function, but by using an electric heater such as a nichrome wire, the second heat exchange unit 3 can be reduced in size and safety. Can be secured.
[0053]
Since the sealing structure 15 has a sealed structure and is a so-called casing, all the steam from the steam generating port 2b is sucked into the blower 4 and the blower 4 sends only the steam to the second heat exchange unit 3. It has a structure that can. Furthermore, the sealing structure 15 communicates with the surrounding wall 20 and is configured to prevent steam leakage.
[0054]
Due to the forced air blowing function of the blower 4 and the surrounding shape of the surrounding wall 20, the heated superheated steam is ejected from the superheated steam outlet 3b toward the object to be heated. The outer wall 20 is made of a material having a good heat insulating property so as to prevent heat release to the outside as much as possible, thereby improving the thermal efficiency and reducing the influence on the user. Further, if necessary, a material having a temperature display function can be provided in the surrounding area to urge the user to pay attention. Alternatively, an infrared heater may be provided and reddish to appeal to the eye and call attention.
[0062]
The water storage container 8 is provided with a water storage container lid 8a with a check valve for preventing water leakage. Note that the water storage container 8 may be changed to a water supply pipe, and the water supply pipe may be directly connected to a water supply for use. If the water storage container 8 or the water supply conduit is in contact with the drive unit protector 17 (see FIG. 3) and is used as a cooling means for the drive unit 16, the operation of the drive unit 16 can be made more stable.
[0063]
The sealed structure portion 15 is provided with an air introduction adjustment valve 21 and is configured to be able to introduce air as necessary. If the atmosphere introduction regulating valve 21 is open, the atmosphere is introduced and oxygen can be contained in the steam. If closed atmospheric air introduction control valve 21, the air in the steam is not introduced, although a anoxic conditions, it is possible to carry out the introduction of oxygen by the introduction of air, intentionally brown object to be heated You can use the effect of aerobic heating when you want to attach it.
[0064]
Atmosphere introduction control valve 21, when the internal pressure of the dense closed structure part 15 becomes a negative pressure below a predetermined value, may be configured to introduce the air. By controlling so as to increase the rotational speed of the blower blades 4c, the internal pressure of the closed structure part 15 by a negative pressure below Tokoro value, it is possible to introduce air guide entering a port Mari oxygen.
[0065]
The main switch 23 and the micro switch 24 are connected to the control circuit unit 7 via the wiring 25 to control power supply to the first heat exchange unit 2, the second heat exchange unit 3, and the blower 4. Illustration of a wiring cord for receiving power from an external commercial power supply is omitted. The main switch 23 is arranged near the holding unit 6 to ensure ease of operation. In use, first, the main switch 23 is turned on. Thus, the setting of pre-heating mode by the control circuit unit 7, is started energization of the sheathed heater 10, the first heat exchange portion 2 in advance, for example pre-heats to a predetermined temperature of about 90 ° C. (preheating mode). Thereafter, when the link mechanism 9 is gripped and operated together with the holding unit 6, the micro switch 24 is turned on.
[0066]
When the micro switch 24 is turned on, the control circuit unit 7 operates to control the sheathed heater 10 in order to prevent the temperature from being reduced due to the introduction of water in conjunction with the supply of water to the first heat exchange unit 2. the amount of energization increases, switched from preheat mode to the heating mode. At the same time, the energization of the heating heater 3c and the driving unit 16 is started, and the heating device 1 enters an operating state.
[0067]
FIG. 2 is a partially enlarged explanatory view illustrating the functions of the first heat exchange unit 2 and the link mechanism. The same parts as those in FIG. A water channel opening / closing valve 9c is provided at the tip of the link mechanism 9 on the side of the water inlet 2a, and the supply of water to the water inlet 2a is controlled by the valve opening / closing mechanism, so the heating device 1 is not operating. Can prevent water leakage. When the link mechanism 9 is rotated in the direction of the link rotation direction 9b by the user's operation, the water channel opening / closing valve 9c that has blocked the tip of the water introduction port 2a is opened, and the water in the water storage container 8 exchanges heat. While flowing into the water pipe 11 and flowing through the heat exchange water pipe 11, it is heated by the sheathed heater 10 and becomes steam. The generated steam is discharged from the steam generating port 2b to the steam suction port 4a and sucked.
[0068]
If the opening / closing control of the water channel opening / closing valve 9c and the on / off control of the sheathed heater 10 and the temperature raising heater 3c are synchronized via the microswitch 24 and the control circuit unit 7, the operability and safety of the heating device 1 can be further improved. Can be improved. Further, when the link mechanism 9 is rotated in two stages and the link mechanism 9 is lightly gripped, the first heat exchange unit 2 is energized, and when the link mechanism 9 is firmly gripped, the second heat exchange unit 3 is further energized. It is also possible to energize.
[0069]
You may make it perform opening / closing control of the water channel on-off valve 9c based on the thermal result of the thermal element arrange | positioned close to the circumference | surroundings of the steam generation opening 2b. Thereby, operability and safety can be further improved. As the heat-sensitive element, for example, a temperature-sensitive element such as a thermistor, a bimetal, a shape memory alloy, or other materials with thermal deformation can be used. At this time, a time difference may be provided between the energization to the first heat exchanging unit 2 and the energization to the second heat exchanging unit 3 and the blower 4 in accordance with the sensed temperature difference or deformation amount.
[0070]
FIG. 3 is a partially enlarged explanatory view for explaining the function of the blower 4. The same parts as those in FIG. The steam suction port 4a has a sealed structure portion 15 made of a sealed structure, and the sealed structure portion 15 is connected to the steam generating port 2b and sucks all the steam from the steam generating port 2b without leaking outside. It has become. The hermetic structure portion 15 is extended to the outside, and is connected to the blower blade 4 c, the steam outlet 4 b, and the surrounding wall 20 to reliably prevent the leakage of steam. Further, it extends to the opposite side of the surrounding wall 20 and is locked to the heating device base 5.
[0071]
The drive unit 16 is disposed outside the hermetic structure unit 15 at a position opposite to the surrounding wall 20. Since the drive part 16 is arrange | positioned outside the sealing structure part 15, the influence by the temperature and humidity of the vapor | steam suck | inhaled by the sealing structure part 15 can be avoided, and the stability of the heating apparatus 1 can be ensured. The periphery of the drive unit 16 is surrounded by a drive unit protector 17 having good thermal conductivity, which is a structure for improving heat dissipation characteristics, and the drive unit protector 17 is disposed in the vicinity of the water storage container 8. Because of the structure, the cooling efficiency by the drive unit protection body 17 can be improved, and waste heat at the time of rotation of the motor that constitutes the drive unit 16 can be made to the water storage container 8 as a cooling means. Overheating can be prevented. The drive unit 16 is connected to the blower blade 4c by the drive transmission shaft 18 to drive the blower blade 4c. The drive transmission shaft 18 is heat resistant in addition to the transmission action of the driving force from the drive unit 16 to the blower blade 4c. In addition, by using a material having excellent heat insulation, it is possible to insulate the heat conduction from the vapor to the drive unit 16 at the vapor suction port 4a, and to further ensure the stability of the blower 4. Normally, water is stored in the water storage container 8, but even when warm water is stored, the temperature of the water storage container 8 is relatively lower than the temperature of the steam suction port 4a, so that a cooling effect is expected. it can.
[0072]
The sealed structure portion 15 is provided with an air introduction adjustment valve 21 and is configured to be able to introduce air as necessary. The introduction of the atmosphere can adjust and increase the oxygen content, and can be used when the object to be heated is to be burnt. The air introduction regulating valve 21 may be a pressure regulating valve that introduces air when the internal pressure of the sealing structure 15 becomes a predetermined value or less. By controlling the rotational speed of the blower blade 4c, the internal pressure of the sealed structure portion 15 can be made negative. Therefore, the rotational pressure of the blower blade 4c is controlled to be equal to or lower than a predetermined value, and the atmosphere is introduced. Oxygen introduction can be controlled.
[0073]
【The invention's effect】
According to the present invention, the air introduction adjustment valve is provided in the sealed structure portion, and the introduction amount of the atmosphere can be adjusted by adjusting the atmosphere introduction adjustment valve, so that the amount of oxygen contained in the superheated steam can be adjusted. can, for example, every other one serving of frozen steaks removed from the freezer on the pan or an iron plate, and extract spewing superheated steam in the heating apparatus, or, or cooking required number of people frozen dumplings, the dumplings and the like, It is possible to provide a heating apparatus capable of heating a frozen gratin for several minutes and then intentionally scorching by introducing outside air to improve the flavor or texture. By superheating the steam, at a higher temperature, and can generate less superheated steam oxygen content (hot air), and can provide a heating device capable of heating cooking does not impair the Ttori and texture. Moreover, not only a heating cooker but use as a heating sterilizer and a heating dryer is also possible .
[Brief description of the drawings]
FIG. 1 is a schematic assembly diagram showing the overall configuration of a heating apparatus according to the present invention.
FIG. 2 is a partially enlarged explanatory view illustrating functions of a first heat exchange unit and a link mechanism.
FIG. 3 is a partially enlarged explanatory view illustrating the function of the blower.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating device 2 1st heat exchange part 2a Water introduction port 2b Steam generation port 3 2nd Heat exchange part 3a Steam introduction port 3b Superheated steam jet 3c Temperature rising heater 4 Blower 4a Steam suction port 4b Steam delivery port 4c Blower blade DESCRIPTION OF SYMBOLS 5 Heating device base part 6 Holding | maintenance part 7 Control circuit part 8 Water storage container 9 Link mechanism 11 Water conduit for heat exchange 15 Sealing structure part 16 Drive part 20 Enclosure wall

Claims (1)

A first heat exchange unit that converts water into steam, a second heat exchange unit that superheats steam, and the first heat exchange unit disposed between the first heat exchange unit and the second heat exchange unit. and a blowing device to suck the generated steam is sent to the second heat exchanger by, a front Symbol first heat exchanger water inlet and the steam generator inlet, the blower and the steam suction port A steam delivery port, the second heat exchanging unit includes a steam introduction port and a superheated steam ejection port, and the steam delivery port communicates with the steam introduction port, and the steam suction port and the steam generation port has a closed structure part that is connected between said second heat exchanger is surrounded by the formed surrounding wall to eject the superheated steam from the overheated steam spout object to be heated, said first heat exchanger Part, the second heat exchanging part, the blower and the sealing structure part are interconnected and integrated, and the superheated steam Tare allows identifying ejection direction of the ejection is, in the heating apparatus for ejecting superheated steam to the article to be heated,
The airtight structure portion is provided with an air introduction adjustment valve, and when the internal pressure of the airtight structure portion becomes a negative pressure equal to or lower than a predetermined value, air is introduced from the air introduction adjustment valve to the airtight structure portion. There is a heating device.

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