JPH11309070A - Heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently heat air in a hermetically sealed container by providing a heating device with a heater, a heating unit provided with a temperature regulator for regulating the temperature of the heater and the hermetically sealed container to which the heater is attached. SOLUTION: This heating device 30 consists of the hermetically sealed container 32 whose inside can be hermetically sealed and a heating part 34 for heating the inside of the container 32. In addition, the container 32 is constituted of a housing part 35 for housing a matter to be heated inside and a lid 37 for closing the opening part of the upper surface of the part 35. the part 35 is formed to be nearly rectangular in the view of a plane, and a wall surface 35a and a bottom surface 35b covering the surrounding of the part 35 are formed in double structure. Thus, it is suitable that heat insulating effect is improved and heating efficiency is improved. In addition. The surface 35a and the surface 35b formed in double structure can additionally improve a heat insulating effect by filling a heat insulating material 29 in a space between the walls formed in double structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for heating air inside a closed container.

[0002]

2. Description of the Related Art When producing fermented foods such as yogurt, natto, amazake, etc., in order to propagate yogurt bacteria, natto bacteria, koji, etc., it is necessary to keep the raw materials to which these are adhered at a constant temperature for a predetermined period. Must. For this reason, conventionally, when producing these fermented foods at home, a kotatsu that can maintain a temperature of about 40 ° C., which is the optimum temperature for the propagation of bacteria, has been used. For example, when making yogurt, the seeds of yogurt were inoculated in milk, placed in a closed container, and kept warm in a kotatsu. Such a method is the same even when making natto or amazake.

[0003]

When a small amount of fermented food is produced at home, as described above, a kotatsu is used to maintain a constant temperature for a predetermined period.
Kotatsu is only used during winter, so when making these fermented foods during the non-winter season, the temperature of the fermented food in a closed container must be kept relatively constant. The fermentation was put in such places. However, such a method has a problem that the temperature of the fermented food is easily affected by the weather and it is difficult to maintain the temperature at a constant temperature. In addition, since the heating is performed from outside the sealed container, the heating efficiency is poor, and there is a problem that it takes time to reach a predetermined temperature.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a heating device capable of efficiently heating air in a sealed container.

[0005]

The present invention has the following arrangement to achieve the above object. That is, according to the heating device of the present invention, a heating device including a heater, a temperature controller for adjusting the temperature of the heater, the heating device is mounted, and the inside is formed to be hermetically sealable. And a sealed container. By employing this configuration, the air in the closed space is heated, so that heat does not escape to the outside and efficient heating can be performed. In addition, since the heater is detachably attached to the closed container, when not used as a heating device, the heater can be removed and used as a simple closed container, and cleaning and maintenance are easy. Can be done. Further, the warmer has an inlet for introducing the air in the sealed container into the heater, and an outlet for leading the air heated in the heater to the sealed container. Is provided,
By locating the outlet below the inlet, convection can be generated in the closed container, and the convection heating eliminates temperature fluctuations in the closed container, thereby achieving efficient heating. It can be carried out.

The inlet is formed in a cylindrical shape projecting from the heater, and the outlet is formed in a cylindrical shape projecting in parallel with the cylindrical inlet. The container is formed with a fitting hole into which the tubular inlet and the outlet are fitted, and the heater is provided outside the sealed container and has a cylindrical shape. Since the mouth and the outlet are fitted into the closed container by being fitted into the two fitted holes, the capacity in the closed container can be increased, and the heater can be easily attached and detached, so that the closed container is sealed. Cleaning and the like in the container can be performed more easily.

[0007]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, a first embodiment of a heating device will be described with reference to FIGS. In this embodiment, a case in which a heater 34 is provided inside a closed container 32 will be described. Heating device 30
Is a sealed container 32 formed so as to be able to seal the inside, and a heating unit 3 for heating the inside of the sealed container 32.
4 Further, the closed container 32 includes a storage section 35 for storing an object to be heated, and a storage section 35.
And a lid 37 for closing the opening of the upper surface of the cover.
The storage section 35 is formed in a substantially rectangular shape in plan view. The wall surface 35a and the bottom surface 35b that cover the periphery of the storage
It is provided in a double structure. Therefore, the heat insulating effect is enhanced, and the heating efficiency is increased, which is preferable. The heat insulating effect can be further enhanced by filling the heat insulating material 29 between the double-walled walls 35a and 35b formed in such a double structure. By increasing the heat insulating effect, the temperature inside the closed container 32 is less likely to be affected by the outside temperature, and the heating efficiency can be further increased. A carrying handle 31 is provided at the upper edge of the storage section 35. The handle 31 is provided in the storage section 35.
Are formed integrally with the wall surface 35a at both ends in the longitudinal direction when viewed from above. In addition, a concave portion 49 is formed on the outer surface of the wall surface 35 a of the storage portion 35 so as to be recessed toward the inside of the storage portion 35.

[0008] A lid 37 for covering the upper opening of the storage section 35.
Are attached to the upper edge of the storage section 35 by hinges 39, 39. The hinges 39, 39 are provided on one long side of the upper edge of the storage section 35. This allows
The lid 37 rotates along the rotation axis of the hinges 39, 39, and can open and close the storage section 35 freely. Storage section 3
On the other long side of the upper edge of the upper end portion 5, mounting fittings 44, 44 are provided for fixing the lid 37 and the storage portion 35 when the upper opening of the storage portion 35 is closed. Further, mounting portions 45, 45 which are parts fixed to the mounting brackets 44, 44 are provided at positions corresponding to the mounting brackets 44, 44 of the lid 37. Also, the lid 3
7, a portion that contacts the upper edge of the storage portion 35 on the lower surface
A packing 42 is attached so as to surround the upper opening of the storage portion 35. When the lid 37 is closed, the packing 4 is provided because the packing 42 is provided on the lid 37.
2 comes into close contact with the upper edge of the storage section 35,
The inside is securely sealed.

Next, based on FIG. 4 and FIG.
4 will be described. The heating unit 34 includes a heater 50, an air blowing unit 52, an excessive temperature rise prevention device 54, and a temperature controller 56 incorporated in a housing 58 formed in a box shape. When the heating unit 34 is mounted inside the storage unit 35, the air in the sealed container 32 is located at the upper right when viewed from the inside (the front of the heating unit 34 shown in FIG. 4). An introduction port 41 for introducing into the inside is provided. The inlet 41 is formed by forming a plurality of air holes 51 in the front of the housing 58. At the lower left side when viewed from the front of the heating unit 34, an outlet 43 is provided for discharging the air heated in the heating unit 34 to the closed container 32. Outlet 43
The air blowing means 52 is attached to the inside, and the heated air is satisfactorily led out into the storage section 35. An example of the blower 52 is a fan motor. A net 55 is attached to the outlet side of the outlet 43. By providing the net body 55, safety can be ensured so that a foreign object, a finger, or the like does not enter the blowing means 52. Thus, by providing the position of the inlet 60 above the position of the outlet 43, the air heated in the heating unit 34 convects in the storage unit 35. For this reason, the storage unit 35
In addition to preventing temperature variations in the interior, heating by convection can be performed, so that heating efficiency is increased and power consumption can be reduced.

A heater 50 shown in FIG.
4 is for heating the air present in the chamber. Heater 50
For example, a planar mica heater, PTC heater, or the like can be used. FIG. 5 shows a heater 50 formed in a wave shape.
Is illustrated. Since the heater 50 is formed in a wave shape in this manner, the contact area between the heater 50 and air can be increased, and the heating efficiency can be increased. Reference numeral 60 denotes a power switch. The power switch 60 turns on / off the power input from the power cord 48 extending to the outside.
It is provided to be able to. Also, the power switch 60
A temperature controller 56 for adjusting the amount of current flowing from the heater 50 to the heater 50 and for adjusting the temperature of the heater 50 is provided by a power switch 6.
0 and the heater 50. Temperature controller 56
Is provided with an adjustment knob 57, which can adjust the temperature of the heater 50. This adjustment temperature is performed in the range of about 10 ° C. to about 80 ° C. Thus, the heater 34
By providing the temperature controller 56 in the apparatus, the heating device 30 according to the present invention can be used in various applications.
Further, a variable temperature thermostat is used for the temperature controller 56. The variable temperature thermostat senses the ambient temperature and cuts off the current flowing through the heater 50 when the ambient temperature exceeds a predetermined temperature. For this reason,
While the inside of the storage section 35 can be maintained at a predetermined temperature,
Abnormal heat generation can be prevented. Reference numeral 54 denotes an over-temperature prevention device. A temperature fuse or the like may be used as an example of the over-temperature prevention device 54. The thermal fuse senses the ambient temperature and cuts off the current when it exceeds a predetermined temperature to cut off the current flowing through the heater 50, thereby preventing abnormal heat generation.

The above-described heating section 34 is attached to the inside of the storage section 35 of the closed container 32 by attaching screws 46. The mounting screw 46 is provided in the housing 35
The outer side when attached to the inside (the heating unit 34 shown in FIG. 4)
(Back side) of the screw holes 47 provided at the four corners.
Further, a projecting portion 59 projecting outward is formed around the screw hole portion 47. The protruding portion 59 is a portion where the heating portion 34 contacts the inner wall surface of the storage portion 35. That is, when mounting the heating unit 34, first, the mounting screw 46 is inserted into the mounting hole 61 formed in the wall surface 35 a of the storage unit 35 from outside the storage unit 35. . Next, the storage unit 35
The tip of the mounting screw 46 that has entered the inside is the heating unit 3.
By screwing with the screw hole 47 of No. 4, the heating unit 34 is fixed to the inner wall surface of the storage unit 35. In the recess 49 of the wall surface 35a of the storage section 35, a cord lead-out hole 65 for the power cord 48 is provided. The power cord 48 is connected to a household power supply AC100V.

Next, a second embodiment of the heating device will be described with reference to FIGS. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the heating unit 34 is provided outside the closed container 32. Reference numeral 62 denotes an inlet for taking in the air inside the sealed container 32 into the heating section 34, and is formed in a cylindrical shape so as to protrude inward of the storage section 35 in the heating section 34. Reference numeral 64 denotes an outlet formed in a cylindrical shape similarly to the inlet 62. The outlet 64 is provided in the heating unit 34 so as to protrude inward of the storage unit 35 in parallel with the introduction port 62.
The air heated by the heater 34 is led out.
In addition, the heating unit 34 in the present embodiment is formed by completely closing a portion other than the inlet 62 and the outlet 64. If the air is not sealed, the heated air in the heating section 34 and the cooled air outside will be mixed, and the heating efficiency will be reduced. Fitting holes 66 and 68 having a diameter into which the inlet 62 and the outlet 64 can be inserted are provided in the wall surface at one end in the longitudinal direction of the storage portion 35. Accordingly, the heating unit 34 can be easily mounted on the closed container 32 simply by inserting the inlet 62 and the outlet 64 from the outside of the closed container 32 into the two insertion holes 66 and 68. it can. In this embodiment, the two insertion holes 66 and 68 are formed in the concave portions 49 of the wall surface 35a.
It may be formed at any position.

[0013] As shown in FIG.
A rubber bushing 70 is attached to the inner diameter of 68. The inner diameter of the bushing 70 is formed to gradually decrease from the outside to the inside of the storage section 35. The portion 70a where the inner diameter of the bushing 70 is the smallest is formed slightly smaller than the outer diameter of the inlet 62 or the outlet 64. That is, the inlet 6 is inserted into the fitting holes 66 and 68 to which the bushings 70 are attached.
When the outlet 2 or the outlet 64 is inserted, the bushing 70 is slightly widened by the inlet 62 or the outlet 64 at the portion having the smallest inner diameter, and the inlet 62 or the outlet 64 is tightened. Thereby, the heating unit 34 is fixed to and attached to the outer wall surface of the storage unit 35. Further, a packing 72 made of rubber and formed in a ring shape is attached to the outer periphery of the inlet 62 or the outlet 64.
The packing 72 seals a gap between the bushing 70 and the inlet 62 or the outlet 64 when the inlet 62 or the outlet 64 is inserted into the insertion holes 66 and 68. The sealing in the sealed container 32 can be performed more completely. The inlet 62 is the outlet 6
When provided above 4, the convection of air occurs inside the storage section 35, and the temperature in the storage section 35 does not fluctuate, and heating can be efficiently performed by convection.

As shown in FIG. 9, the closed container 32 may be provided with a ventilation mechanism 74 for ventilating the air in the storage section 35. The ventilation mechanism 74 shown in FIG. 9 is of a slide type provided on the upper surface of the lid 37. The ventilation mechanism 74 includes a ventilation hole 76 formed on the upper surface of the lid 37,
A slide lid 78 for closing the ventilation hole 76. As described above, since the ventilation mechanism 74 is provided in the closed container 32, ventilation can be performed without opening the lid 37, and ventilation can be performed without lowering the temperature in the closed container 32 as much as possible. Also,
The ventilation mechanism 74 is preferable if the lid is a slide type, because the opening and closing amount of the lid can be adjusted according to the amount of ventilation.
The ventilation mechanism is not limited to such a configuration, and may be provided on the wall surface of the storage unit 35. Further, the lid that covers the ventilation hole may not be a slide type.

The above-described heating device is not limited to use only for heating fermented foods. As another example of use, it can be used for keeping warm food such as stew and curry, and keeping tableware such as coffee cups.
Further, the vegetables may be kept warm so that the vegetables do not freeze in winter. Further, it can be used as a drying device by being used in combination with a drying agent or a dehumidifying agent. An example of such a case is to dry the pressed flower. When a pressed flower is made at home, if the heating device according to the present invention is used for drying, the heating efficiency is high, so that electricity bills and the like can be saved, and a large-scale drying device is not required. This is preferable. Further, it can be used as a dryer for drying small laundry such as handkerchiefs and underwear.

Although the present invention has been described in detail with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0017]

According to the heating device according to the present invention, since the air in the closed space is heated, heat can be prevented from escaping to the outside and efficient heating can be performed. If the heater is made detachable from the closed container, the heater can be removed and used as a simple closed container when not used as a heating device, and cleaning and maintenance can be easily performed. Furthermore, since the inlet for introducing the air in the closed vessel into the heater is provided at a position lower than the outlet for introducing the air heated in the heater into the closed vessel, Convection can be generated in the closed container, and the heating by the convection can eliminate temperature variations in the closed container and perform efficient heating. The inlet is formed in a cylindrical shape projecting from the heater, the outlet is formed in a cylindrical shape projecting in parallel with the cylindrically formed inlet, and the sealed container is formed in a cylindrical shape. An insertion hole into which the formed inlet and outlet are inserted is formed, and the heater inserts the cylindrical inlet and outlet into the both insertion holes from outside the sealed container. By doing so, the capacity in the closed container can be increased, and the heater can be easily attached and detached, so that the inside of the closed container can be more easily cleaned.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a heating device.

FIG. 2 is a plan view of the heating device shown in FIG.

FIG. 3 is a side view of the heating device shown in FIG.

FIG. 4 is a front view of a heater.

FIG. 5 is an explanatory diagram showing an internal structure of a heater.

FIG. 6 is a perspective view showing a second embodiment of the heating device.

FIG. 7 is a sectional view from the front of the heating device shown in FIG. 6;

FIG. 8 is an enlarged view of a fitting hole and an inlet or outlet.

FIG. 9 is a perspective view when a ventilation mechanism is provided on the lid.

[Explanation of symbols]

 29 Insulating agent 30 Heating device 31 Handle 32 Closed container 34 Heater 35 Storage section 37 Lid 39 Hinge 41 Inlet port 42 Packing 43 Outlet port 44 Mounting bracket 45 Mounting section 46 Mounting screw 47 Screw hole 48 Power cord 49 recess Reference Signs List 50 heater 51 air hole 52 air blowing means 54 overheat prevention device 55 mesh body 56 temperature controller 57 adjustment knob 58 housing unit 60 power switch 62 introduction port 64 outlet port 65 cord extraction hole 66 fitting insertion hole 68 fitting insertion hole 70 Bushing 72 Packing 74 Ventilation mechanism 76 Ventilation hole 78 Slide lid

Claims (4)

[Claims] 1. A heating device comprising a heater, a temperature controller for adjusting the temperature of the heater, and a sealed container to which the heating device is attached and the inside of which is formed so as to be sealable. A heating device. 2. The heating device according to claim 1, wherein the heating device is detachably mounted on the closed container. 3. An inlet for introducing air in the closed vessel into the warmer, and an air heated in the warmer is introduced into the closed vessel. The heating device according to claim 1, wherein an outlet is provided, and the outlet is located lower than the inlet. 4. The inlet is formed in a tubular shape projecting from the heater, the outlet is formed in a tubular shape projecting in parallel with the tubular inlet, The container is formed with a fitting insertion hole into which the cylindrically formed inlet and the outlet are fitted. The heater is provided from the outside of the closed container with the cylindrically formed inlet. The heating device according to claim 3, wherein the heating container is attached to the closed container by inserting a mouth and the outlet into the both insertion holes.