JP2011058673A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker preventing generation of heating unevenness on a heating object. <P>SOLUTION: The cooker is equipped with: a water supply tank; a steam generator generating steam by heating water from the water supply tank, an upper heater 26 producing superheated steam by heating the steam from the steam generator as well as heating the heating object by radiation heat; a heating chamber heating the heating object by at least one of the superheated steam from the upper heater 26 and the radiation heat by the upper heater 26; and a control part 100 controlling the upper heater 26. The control part 100 has a steam supply amount control part 101 controlling supply of the steam from the steam generator to the upper heater 26. The steam supply amount control part 101 stops supplying the steam from the steam generator to the upper heater 26 until temperature of the upper heater 26 becomes the temperature generating no dew condensation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, as described in Japanese Patent Application Laid-Open No. 2007-232270 (Patent Document 1), steam is heated to 100 ° C. or higher with a heater to form superheated steam, and the heated object is heated with this superheated steam. There is something to heat.

  By the way, although the said water vapor | steam is generated with the steam generation apparatus, when water vapor | steam is supplied to a heater from a steam generation apparatus, a heater may not fully warm. In this case, the water vapor from the steam generating device is condensed on the surface of the heater, and the surface temperature of the heater is lowered.

  When such condensation occurs in a part of the heater, there arises a problem that heating unevenness occurs in the heated object.

JP 2007-232270 A

  Then, the subject of this invention is providing the heating cooker which can prevent that a heating nonuniformity arises in a to-be-heated material.

In order to solve the above problems, the heating cooker of the present invention is
A water tank,
A steam generating section for generating water vapor by heating water from the water supply tank;
A steam heating unit that heats steam from the steam generation unit to generate superheated steam, and heats an object to be heated with radiant heat;
Superheated steam from the steam heating unit, and a heating chamber for heating the object to be heated at least one of radiant heat from the steam heating unit,
A control unit for controlling the steam heating unit,
The control unit includes a steam supply amount control unit that controls supply of water vapor from the steam generation unit to the steam heating unit,
The steam supply amount control unit prevents the steam heating unit from condensing by preventing steam from being supplied from the steam generation unit to the steam heating unit until the steam heating unit reaches a temperature at which no condensation occurs. It is characterized by that.

  According to the cooking device configured as described above, the steam supply amount control unit prevents steam from being supplied from the steam generation unit to the steam heating unit until the steam heating unit reaches a temperature at which condensation does not occur. When supplying to a heating part, it can prevent that water vapor | steam condenses in a steam heating part. Thereby, the temperature nonuniformity of the vapor | steam heating part resulting from the place which condensed on the said vapor | steam heating part, and the place which is not condensed can be prevented.

  Therefore, it is possible to prevent the heating unevenness of the object to be heated due to the temperature unevenness of the steam heating unit.

In the heating cooker of the present invention,
A water tank,
A steam generating section for generating water vapor by heating water from the water supply tank;
A steam heating unit that heats steam from the steam generation unit to generate superheated steam, and heats an object to be heated with radiant heat;
Superheated steam from the steam heating unit, and a heating chamber for heating the object to be heated at least one of radiant heat from the steam heating unit,
A control unit for controlling the steam heating unit,
The steam heating unit has a first steam heating unit and a second steam heating unit,
The first steam heating unit is between the first steam heating unit and the second steam heating unit,
The control unit includes the first steam heating unit and the second steam heating unit so that the temperature of the first steam heating unit is higher than the temperature of the second steam heating unit for a predetermined period from the start of cooking. It is characterized by controlling.

  According to the heating cooker having the above-described configuration, the temperature of the first steam heating unit on the side close to the steam generating unit for a predetermined period from the start of cooking by the control of the control unit for the first steam heating unit and the second steam heating unit. However, since it becomes higher than the temperature of the 2nd steam heating part far from a steam generation part, it can prevent that the surface temperature of the 1st steam heating part near the steam generation part falls with water vapor.

  Therefore, it is possible to reduce the temperature difference between the first steam heating unit on the side close to the steam generation unit and the second steam heating unit on the side far from the steam generation unit.

  As a result, it is possible to prevent uneven heating of the object to be heated due to the temperature difference between the first steam heating unit and the second steam heating unit.

  According to the cooking device of the present invention, the steam supply amount control unit prevents steam from being supplied from the steam generation unit to the steam heating unit until the steam heating unit reaches a temperature at which no condensation occurs. It is possible to prevent water vapor from condensing on the surface of the steam heating unit.

  Therefore, it is possible to prevent the surface of the steam heating unit from being lowered due to condensation, and to prevent heating unevenness from occurring in the heated object.

  According to the cooking device of the present invention, the control unit controls the first steam heating unit and the second steam heating unit such that the temperature of the first steam heating unit is higher than the temperature of the second steam heating unit. Therefore, it can prevent that the surface temperature of the 1st steam heating part near a steam generating part compared with a 2nd steam heating part falls with water vapor | steam.

  Therefore, as a result of reducing the temperature difference between the first steam heating unit and the second steam heating unit, uneven heating of the object to be heated due to the temperature difference between the first steam heating unit and the second steam heating unit is prevented. be able to.

FIG. 1 is a schematic front view of a heating cooker according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the heating cooker as viewed from the front and obliquely above. FIG. 3 is a schematic perspective view of the heating cooker as viewed from the front and obliquely above. FIG. 4 is a schematic perspective view of the heating cooker as viewed from the rear and obliquely above. FIG. 5 is a schematic perspective view of the cooking device as seen from the side. 6 is a schematic cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a control block diagram of the cooking device. FIG. 8 is a schematic view of a heating cooker according to another embodiment of the present invention.

  Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is a schematic front view of a heating cooker according to an embodiment of the present invention.

  The heating cooker includes a casing 1 and a sliding door 2 with a handle that is attached to the front side of the casing 1. An operation panel 3 is provided on the front side of the casing 1 so as to be adjacent to the door 2 with a handle when closed. A dew receiver 4 is disposed below the operation panel 3.

  A dial 5 is rotatably attached to the operation panel 3. Further, the operation panel 3 has a liquid crystal display unit 7, and the liquid crystal display unit 7 performs display according to the operation of the dial 5.

  The dew receptacle 4 is a container that can be attached to and detached from the two front legs 6 and 6. The front legs 6 and 6 are provided on the front side of the bottom of the casing 1. When the dew receptacle 4 is attached to the front legs 6 and 6, a part of the dew receptacle 4 is positioned below the rear surface (back surface) of the door 2 with a handle when closed. Thereby, when the door 2 with a handle is opened, the dew on the rear surface of the door 2 with the handle drops into the dew receptacle 4.

  FIG. 2 is a schematic perspective view of the heating cooker with the handle door 2 opened as viewed obliquely from the upper front. Moreover, FIG. 3 is the schematic perspective view which looked at the cooking-by-heating machine by which the said door 2 with a handle was closed from diagonally upward ahead. FIG. 4 is a schematic perspective view of the heating cooker of FIG. 2 to 4, the top and both sides of the casing 1 are removed.

  As shown in FIGS. 2 to 4, the casing 1 is provided with a heating chamber 8 that accommodates an object to be heated. In the casing 1, a space on the side of the heating chamber 8 and behind the operation panel 3 is an electrical component chamber 9, and a space behind the heating chamber 8 and behind the electrical component chamber 9 is an intake space 10. That is, the electrical component chamber 9 is provided on one side of the casing 1, while the intake space 10 is provided on the rear side of the casing 1.

  The heating chamber 8 has an opening 8 a on the front side, and the door 2 with a handle opens and closes the opening 8 a of the heating chamber 8. The object to be heated is put into and out of the heating chamber 8 through the opening 8 a of the heating chamber 8. Further, heat shield plates 11, 11,... Are arranged above, below, behind and on both sides of the heating chamber 8. That is, the heat shield plates 11, 11,... Are arranged around the heating chamber 8 except for the opening 8 a. Although not shown, the space between the heat shield plate 11 and the heating chamber 8 is filled with a heat insulating material. The gas in the heating chamber 8 is guided to the front side of the casing 1 through the exhaust path 12 and is exhausted from the front side of the casing 1 to the outside of the casing 1.

  In the electrical component chamber 9, a steam generator 13 for generating water vapor, a water supply pump 14 connected to the steam generator 13 via a water supply tube 20, and a tank disposed in front of the water supply pump 14. There is a storage unit 15. When the object to be heated is heated, air from the cooling fan 16 flows in the electrical component chamber 9 so that electrical components such as the water supply pump 14 can be cooled.

  The intake space 10 is a space through which air around the rear side of the casing 1 flows from the four intake ports 17A, 17B, 17C, and 17D when the cooling fan 16 is driven. The air in the intake space 10 is sucked into the cooling fan 16 and blown out into the electrical component chamber 9. Note that each of the intake ports 17A, 17B, 17C, and 17D includes a plurality of slits provided at the rear portion of the casing 1.

  The exhaust path 12 includes a flexible synthetic resin exhaust tube 18 and a non-flexible synthetic resin exhaust duct 19 disposed on the side of the tank housing 15.

  The exhaust tube 18 is installed so as to extend from the upper rear side to the lower front side of the electrical component chamber 9. The rear end portion of the exhaust tube 18 is connected to the rear portion of the heating chamber 8, while the front end portion of the exhaust tube 18 is connected to the exhaust duct 19.

  The rear end of the exhaust duct 19 is open so that air from the cooling fan 16 flows into the exhaust duct 19.

  2 to 4, reference numeral 21 denotes a partition wall that partitions the electrical component chamber 9 and the intake space 10. A cooling fan 16 is attached to the partition wall 21.

  FIG. 5 is a schematic perspective view of the heating cooker of FIG. 3 viewed from the side.

  An exhaust / drain port 22 is provided at the bottom of the front side of the exhaust duct 19. The exhaust / drain port 22 passes through the bottom of the casing 1 and faces the dew receiver 4. Further, the exhaust duct 19 has a front end portion of the exhaust tube 18, and the opening of the front end portion of the exhaust tube 18 faces the exhaust and drain port 22 side.

  The tank storage unit 15 stores a water supply tank 23. As shown in FIG. 2, the front surface of the water supply tank 23 is exposed when the door 2 with a handle is opened, and can be taken in and out of the tank storage portion 15. Further, the water in the water supply tank 23 is supplied to the steam generator 13 through the water supply tube 20 by driving the water supply pump 14. The steam generator 13 heats the water from the feed water pump 14 with a steam generating heater 24 to generate water vapor.

  Moreover, when the door 2 with a handle is opened, the tray 40 is pulled out from the heating chamber 8. An object to be heated is placed on the tray 40, and the object to be heated is put into and out of the heating chamber 8 together with the tray 40.

  The tray 40 is detachably held by a tray holder 39 (see FIG. 6) from below. The tray holder 39 is formed by bending a metal wire into a predetermined shape. The front end of the tray holder 39 is detachably attached to the rear surface of the door 2 with a handle.

  The door 2 with a handle can be moved in the front-rear direction by a rail unit 41. The rail unit 41 includes a fixed rail (not shown) fixed to the casing 1 and a movable rail 42 that can move forward and backward with respect to the fixed rail. Further, the front end portion of the movable rail 42 is connected to the rear surface of the door 2 with a handle by a connecting metal fitting and a screw.

  FIG. 6 is a schematic cross-sectional view taken along line IV-IV in FIG.

  An upper heater storage 25 is provided on the upper side of the heating chamber 8 so that water vapor from the steam generator 13 flows into the upper heater storage 25. An upper heater 26 is accommodated in the upper heater accommodating portion 25. The upper heater 26 heats the steam from the steam generator 13 to generate superheated steam, and heats the object to be heated with radiant heat. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more. The upper heater 26 is an example of a steam heating unit.

  The upper heater 26 is covered with the top 8b of the heating chamber 8 from below. The top 8b of the heating chamber 8 functions as a radiation plate that is heated by the upper heater 26 and irradiates the object to be heated in the heating chamber 8 with radiant heat. Moreover, the top part 8b of the heating chamber 8 is provided with a plurality of steam blowing holes 28, 28,..., And the space in the upper heater storage part 25 is heated via the plurality of steam blowing holes 28, 28,. It communicates with the space in the storage 8. As a result, the superheated steam in the upper heater housing section 25 is blown out toward the object to be heated on the tray 40 from the plurality of steam blowing holes 28, 28,.

  On the other hand, a lower heater storage portion 29 is provided below the heating chamber 8, and the lower heater 30 is stored in the lower heater storage portion 29.

  The lower heater 30 is covered with the bottom 8c of the heating chamber 8 from above. The rear end of the tray holder 39 slides on the inner wall surface of the bottom 8c of the heating chamber 8. Moreover, although the bottom part 8c of the heating chamber 8 functions as a radiation plate similarly to the top part 8b of the heating chamber 8, it does not have a through-hole like several vapor | steam blowing holes 28,28, .... That is, the lower heater 30 is completely covered with the bottom 8 c of the heating chamber 8 and is not exposed to the space inside the heating chamber 8. Thereby, the oil etc. which came out of the to-be-heated material are dripped, and it is made not to adhere to the lower heater 30. FIG.

  FIG. 7 is a control block diagram of the cooking device.

  The cooking device includes an internal temperature sensor 43 that detects a space temperature in the heating chamber 8, an upper heater temperature sensor 44 that detects the temperature of the upper heater 26, and a lower heater temperature sensor that detects the temperature of the lower heater 30. 45, and a control unit 100 including a microcomputer and an input / output circuit. The internal temperature sensor 43 is provided in the heating chamber 8, the upper heater temperature sensor 44 is provided in the upper heater storage portion 25, and the lower heater 30 is provided in the lower heater storage portion 29 (see FIG. 6).

  The steam control unit 100 includes a steam supply amount control unit 101 that controls supply of water vapor from the steam generator 13 to the upper heater 26. The steam supply amount control unit 101 turns off the steam generating heater 24 so that steam is not supplied from the steam generating device 13 to the upper heater 26 until the upper heater 26 reaches 100 ° C. At this time, the steam supply amount control unit 101 determines whether or not the upper heater 26 is at 100 ° C. based on the output signal of the upper heater temperature sensor 44. The 100 ° C. is an example of a temperature at which no condensation occurs.

  According to the cooking device configured as described above, the steam supply amount control unit 101 prevents steam from being supplied from the steam generator 13 to the upper heater 26 until the upper heater 26 reaches 100 ° C. The water vapor can be supplied to the upper heater 26 after the temperature 26 is sufficiently warmed.

  Therefore, it is possible to reliably prevent the water vapor from the steam generator 13 from condensing on the surface of the upper heater 26.

  Therefore, the object to be heated on the tray 40 can be baked uniformly. That is, it is possible to prevent heating unevenness from occurring in the object to be heated.

  In the above embodiment, whether or not the upper heater 26 is at 100 ° C. is determined based on the output signal of the upper heater temperature sensor 44, but may be determined based on the energization time of the upper heater 26. .

  In the embodiment described above, the upper heater 26 is disposed in the upper heater storage unit 25, but may be disposed in the heating chamber 8.

  In the above embodiment, for example, an electromagnetic valve may be provided at the water vapor outlet of the steam generator 13. The solenoid valve is an example of a steam supply amount control unit.

  In the above embodiment, a baffle plate may be provided between the steam outlet of the steam generator 13 and the upper heater 26 so that the steam blown from the steam outlet does not directly hit the upper heater.

  In the above embodiment, as shown in FIG. 4, one upper heater 26 bent into a predetermined shape is used. However, as shown in FIG. 8, one upper heater 126A extending substantially in a straight line, One upper heater 126B that is provided separately from the upper heater 126A and extends substantially in a straight line may be used. The upper heater 126A is an example of a first steam heating unit, and the upper heater 126B is an example of a second steam heating unit.

  The distance from the steam outlet 150 of the steam generator 13 to the upper heater 126A is shorter than the distance from the steam outlet 150 of the steam generator 13 to the upper heater 126B. That is, the upper heater 126A is located between the steam generator 13 and the upper heater 126B. Then, the steam from the steam generator 13 directly hits the upper heater 126A.

  When using the upper heaters 126A and 126B, the control unit 100 controls the upper heaters 126A and 126B so that the temperature of the upper heater 126A is higher than the temperature of the upper heater 126B. Thereby, the generation | occurrence | production of the heating nonuniformity in a to-be-heated material can be prevented similarly to the said embodiment.

  In that case, the control for increasing the temperature of the upper heater 126A to be higher than the temperature of the upper heater 126B is, for example, from the start of heating of the object to be heated until a preset time elapses, that is, It may be performed only for a predetermined period from the start of cooking. Alternatively, for example, the control may be performed from the start of heating of the object to be heated to the end of heating of the object to be heated. That is, the above control may be performed based on on / off control of the steam generator 13. Here, “ON of the steam generating device 13” means a state where the steam generating heater 24 is energized, and “OFF of the steam generating device 13” means a state where the steam generating heater 24 is not energized. means.

  In the above embodiment, the lower heater 30 is not exposed in the space in the heating chamber 8, but the lower heater 30 may be exposed in the space in the heating chamber 8.

  In the above embodiment, the superheated steam is generated in the upper heater storage section 25 and this superheated steam is supplied into the heating chamber 8, but the superheated steam is also generated in the lower heater storage section 29. Superheated steam may be supplied into the heating chamber 8.

  The present invention can be applied not only to an oven range that uses superheated steam, but also to a cooking device such as an oven, range, or IH cooking heater that uses superheated steam.

  In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a cooking heater (including an electric stove such as an IH heater or an electric heater or a gas stove) or a microwave oven. it can. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam adhered to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Furthermore, the heating chamber is filled with superheated steam or saturated steam and becomes oxygen-free, thereby enabling cooking with reduced oxidation of food.

8 Heater 13 Steam generator 23 Water supply tank 26, 126A, 126B Upper heater 100 Control unit 101 Steam supply amount control unit

Claims (2)

A water tank,
A steam generating section for generating water vapor by heating water from the water supply tank;
A steam heating unit that heats steam from the steam generation unit to generate superheated steam, and heats an object to be heated with radiant heat;
Superheated steam from the steam heating unit, and a heating chamber for heating the object to be heated at least one of radiant heat from the steam heating unit,
A control unit for controlling the steam heating unit,
The control unit includes a steam supply amount control unit that controls supply of water vapor from the steam generation unit to the steam heating unit,
The steam supply amount control unit prevents the steam heating unit from condensing by preventing steam from being supplied from the steam generation unit to the steam heating unit until the steam heating unit reaches a temperature at which no condensation occurs. A cooking device characterized by that. A water tank,
A steam generating section for generating water vapor by heating water from the water supply tank;
A steam heating unit that heats steam from the steam generation unit to generate superheated steam, and heats an object to be heated with radiant heat;
Superheated steam from the steam heating unit, and a heating chamber for heating the object to be heated at least one of radiant heat from the steam heating unit,
A control unit for controlling the steam heating unit,
The steam heating unit has a first steam heating unit and a second steam heating unit,
The first steam heating unit is between the first steam heating unit and the second steam heating unit,
The control unit includes the first steam heating unit and the second steam heating unit so that the temperature of the first steam heating unit is higher than the temperature of the second steam heating unit for a predetermined period from the start of cooking. A heating cooker characterized by controlling.

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