EP1640666A1 - Zur verwendung für integrierte anwendung fähige koch-heizvorrichtung - Google Patents
Zur verwendung für integrierte anwendung fähige koch-heizvorrichtung Download PDFInfo
- Publication number
- EP1640666A1 EP1640666A1 EP04736697A EP04736697A EP1640666A1 EP 1640666 A1 EP1640666 A1 EP 1640666A1 EP 04736697 A EP04736697 A EP 04736697A EP 04736697 A EP04736697 A EP 04736697A EP 1640666 A1 EP1640666 A1 EP 1640666A1
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- EP
- European Patent Office
- Prior art keywords
- heat
- heating
- built
- heating cooker
- heat flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6426—Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord
- H05B6/6429—Aspects relating to mounting assemblies of wall-mounted microwave ovens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/006—Arrangements for circulation of cooling air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/642—Cooling of the microwave components and related air circulation systems
Definitions
- the present invention relates to a heating cooker configured to be enabled to be built into a prescribed accommodating space.
- a built-in kitchen is frequently employed as, for example, a household kitchen to enhance workability thereof and efficiency in building various kinds of cooking apparatuses thereinto and in disposing the cooking apparatuses therein.
- built-in adaptation apparatuses such as a gas cooking stove, a heating cooker, a dishwasher/dishdrier, and the like are built into the built-in kitchen.
- cooking utilizing only high-frequency heating has been the mainstream of cooking to be performed in microwave ovens serving as heating cookers.
- cooking utilizing electrothermal heating has been enabled in microwave ovens.
- Various kinds of cooking have been enabled therein. This holds good for built-in adaptation type heating cookers that are not exceptions.
- This kind of a built-in adaptation type heating cooker is often built into a lower storage space of a cabinet 5 in an upper part of which a built-in type of a gas cooking stove 3 is provided, as shown in FIG. 12. Because the storage space of the cabinet 5 is a closed space, hot air generated by cooking should be exhausted from an exhaust slot 7 provided in a front side of the heating cooker 1. When hot air is directly transmitted to a user, high-temperature exhaust air causes the user to feel discomfort. Thus, contrivances, such as lowering of exhaust air temperature, are made in this kind of a built-in adaptation type heating cooker.
- Patent Document 1 JP-T-2003-517564.
- An intake slot and an exhaust slot are provided in the front side of the heating cooker disclosed in, for example, the Patent Document 1, so that cooling air and exhaust air go in and out of the front side thereof.
- an upper heater and a lower heater are provided in the heating cooker.
- An upper inside passage, through which air flow generated by an upper heater cooling fan passes, is formed in a part in which this upper heater is provided.
- a cooling passage, through which air flow generated by a lower heater cooling fan passes, is formed in a part in which a lower heater is provided.
- a part of air sucked from the intake slot is supplied directly to the front of the exhaust slot and joins with air whose temperature is raised to a high temperature by being passed through the heater. Thereafter, the air is exhausted from the exhaust slot. Therefore, the temperature of the air exhausted from the exhaust slot can be set at a low temperature.
- a heating chamber is disposed as high as possible in the built-in adaptation type heating cooker in view of workability of setting food in and taking cooked food out of the heating chamber.
- a heating operation portion adapted to set heating conditions and the like is disposed as high as possible in the built-in adaptation type heating cooker in view of operability thereof.
- the conventional built-in adaptation type heating cooker is low in efficiency in mixing high temperature air with cooling air.
- high temperature air with cooling air should be agitated by ensuring large capacity of a mixing portion. Therefore, it is necessary to ensure the provision of the exhaust slot over the entire width of the cooker. Consequently, the occupied area of the exhaust slot increases. This makes it difficult to place both the heating chamber and the heating operation portion at upper positions (that is, the heating operation portion is longitudinally disposed on a side of the heating chamber).
- a hot-air warning region is broad. This is a hindrance to enhancement of the added value of articles.
- the heating cooker disclosed in the Patent Document 1 requires air-blowing means, such as an upper heater cooling fan and a lower heater cooling fan, in addition to an exhaust motor, and is disadvantageous in component cost, electric power consumption, and operation noises.
- An object of the invention is to provide a built-in adaptation type heating cooker enabled to highly efficiently mix high-temperature air and cooling air with a small number of air-blowing means and to reduce the capacity of a mixing portion, so that a heating chamber and a heating operation portion can be disposed at upper positions, and is also to enhance workability and operability thereof.
- a built-in adaptation type heating cooker according to the invention described in claim 1 which is accommodated in a predetermined storage space so that only a front side thereof is exposed to an outside, and which is adapted so that a main heat flow, which is supplied from a heating chamber heated by a heat source, and a heating chamber surrounding heat flow, which is generated around the heat chamber by the heat source, are mixed with a cooling air, that a mixture air is subsequently exhausted outside of the storage space from an exhaust slot.
- the built-in adaptation type heating cooker comprises an air blowing means adapted to suck air and to generate a cooling air, an upper heat collecting chamber provided above the heating chamber and adapted to join heat flows, and a mixing means disposed upstream of the exhaust slot and adapted to mix a heat flow collected in the upper heat collecting chamber with a cooling air.
- an outside air is sucked by the air blowing means to thereby generate a cooling air.
- the heat flows are collected in the upper heat collecting chamber provided above the heating chamber.
- the cooling air is mixed with the mixed heat flows preliminarily collected in the upper heat collecting chamber, by the mixing means disposed upstream of the exhaust slot.
- the capacity of the mixing portion can be reduced.
- the heating operation portion is disposed in a newly assured upper space. Consequently, both the heating chamber and the heating operation portion can be disposed at upper positions.
- the exhaust slot does not extend over the entire width of the heating cooker, the hot-air warning region is narrowed.
- the added value of articles is enhanced.
- the number of the air blowing means is 1, the cost of components of heating cooker, the power consumption thereof, and the operation noises thereof can be reduced, as compared with the conventional built-in adaptation type heating cooker that requires a plurality of air blowing means.
- a built-in adaptation type heating cooker according to the invention described in claim 2 features that the upper heat collecting chamber has a first heat flow passage configured to lead a main heat flow supplied from the heating chamber to the mixing means, a second heat flow passage configured to lead the heating chamber surrounding heat flow to the mixing means, and a third heat flow passage configured to join and lead the first heat flow passage and the second heat flow passage to the mixing means.
- a main heat flow and a heating chamber surrounding heat flow join in the third heat flow passage, so that the main heat flow is lowered in temperature before flowing into the mixing means.
- a built-in adaptation type heating cooker according to the invention described in claim 3 features that the heat source has an upper heating heater adapted to heat at a top surface side of the heating chamber, and that the second heat flow passage is formed to include a space provided above a placement plane region of the upper heating heater.
- the upper heating heater generates heat, so that an object to be heated, which is placed in the heating chamber, can be heat-treated with radiation heat. At that time, heat transmitted from the placement plane region of the upper heating heater is fed to the third heat flow passage by the heating chamber surrounding heat flow that moves in the second heat flow passage. Thus, the temperature of the placement plane region can be suppressed from rising.
- a built-in adaptation type heating cooker features that the heat source has an inner part heating heater adapted to heat at an inner surface side of the heating chamber, that the inner part heating heater is surrounded by a heating chamber inner surface and a back plate, that a partition plate is disposed to be aligned with said heating chamber inner surface across said back plate, and an opening hole adapted to lead a heat flow, which is generated between the back plate and the partition plate, to the upper heat collecting chamber is formed in a part of the second heat flow passage.
- the inner part heating heater generates heat, so that an object to be heated, which is placed in the heating chamber, can uniformly be heated at a high temperature.
- heat transmitted from the back plate is upwardly fed by a rising heat flow between the back plate and the partition plate.
- the heat flow is exhausted to the second heat flow passage through the opening hole.
- the temperature of the back plate can be suppressed from rising.
- a built-in adaptation type heating cooker according to the invention described in claim 5 features that this built-in adaptation type heating cooker further comprises a first cooling air passage adapted to blow a cooling air, which is supplied from the air blowing means, in a direction perpendicular to a direction of a heat flow in the third heat flow passage.
- the main heat flow joins with the heat chamber surrounding heat flow in the third heat flow passage. Then, the joined flows are cooled by the cooling air from the outside the third heat flow passage, and are lowered in temperature.
- a built-in adaptation type heating cooker according to the invention described in claim 6 features that the mixing means has a baffle plate adapted to stagnate a heat flow supplied from the upper heat collecting chamber.
- a heat flow having flowed into the mixing means from the upper heat collecting chamber hits against the baffle and temporarily stagnates.
- the main heat current supplied from the first heat current passage is lowered in temperature by the thermal conduction between the mixing means and the heat flow and by the heat transfer between the heat flow and a mixture with cool air.
- a built-in adaptation type heating cooker features that the mixing means has an upstream diffusion plate and a downstream diffusion plate, which are disposed substantially in parallel to each other to be spaced from each other by a predetermined distance and are configured so that airholes are formed in each of the diffusion plates, that a vent adapted to lead a heat flow, which is supplied from the upper heat collecting chamber, to a space provided between the upstream diffusion plate and the downstream diffusion plate is formed in the upstream diffusion plate, and that the downstream diffusion plate is configured so that the baffle plate is formed at a position at which the baffle plate faces the vent, and that the heat flows and a cooling air are mixed in a space between the upstream diffusion plate and the downstream diffusion plate and a mixture flow is exhausted.
- the main heat flow supplied from the first heat flow passage and the heating chamber surrounding heat flow q supplied from the upper heat collecting chamber pass through the vent and flow into the space between the upstream diffusion plate and the downstream diffusion plate and then hit against the baflle plate, so that the flows become a stirred flow.
- the cooling air having been supplied from the first cooling air passage and also having passed through the airhole of the upstream diffusion plate flows into this space.
- the cooling air having flowed thereinto is mixed with the stirred flow to thereby promote heat transfer. Consequently, the main heat flow, the heat chamber surrounding heat flow, and the cooling air sufficiently perform heat exchange thereamong in the limited space, so that the temperature of each of the heat flows is lowered.
- the mixture flow lowered in temperature passes through the airhole of the downstream diffusion plate is exhausted from the exhaust slot.
- a built-in adaptation type heating cooker according to the invention described in claim 8 features that the mixing means has a louver adapted to limit a direction of an air to a downstream side of the baffle plate.
- a louver adapted to limit the direction of the air to a downstream direction of the baffle plate is provided in the mixing means.
- the louver is provided downstream of the baffle plate, so that a hand or a finger can be prevented from touching the baffle plate whose temperature becomes high.
- the louver is disposed downstream of the baffle plate by a predetermined distance, so that the exhaust heat flow is lower in temperature.
- the direction of the air is regulated by the louver, so that a hot-air warning region is narrow.
- a built-in adaptation type heating cooker according to the invention described in claim 9 features that a heating operation portion is disposed along a front surface of the heating cooker at a substantially same height as that of the heat collecting chamber provided above the heating chamber, and that the first cooling air passage is disposed along the heating operation portion.
- the upper heat collecting chamber and the heating operation portion are disposed on substantially the same plane. Further, the first cooling air passage is disposed therebetween. Therefore, the heating operation portion is always cooled by the cooling air flowing through the first cooling air passage without being affected by heat transmitted from the upper heat collecting chamber. Consequently, the upper heat collecting chamber and the heating operation portion can be placed on substantially the same plane. Thus, in a case where the upper heat collecting chamber and the heating operation portion should vertically be aligned with each other, increase in the vertical height of the cooker can be suppressed.
- a built-in adaptation type heating cooker according to the invention described in claim 10 features that a heating operation portion configured to perform a heating operation and the exhaust slot are collaterally disposed above a front surface side of the heating chamber.
- the heating operation portion and the exhaust slot are collaterally disposed at the top position.
- the operability of the heating operation portion is enhanced.
- a built-in adaptation type heating cooker according to the invention described in claim 11 features that the air blowing means is provided on a back side of the heating cooker and is adapted to suck air at the back surface side of the heating cooker.
- the air blowing means sucks air at the back surface side of the heating cooker.
- the heating cooker is built into the storage space provided in the cabinet of the built-in kitchen. Air is sucked from the back surface thereof. Thus, the air flows into the heating cooker through clearance or the like of the cabinet. This eliminates the necessity for providing an intake opening. Consequently, the placement of the heating chamber at an upper part and the suppression of increase in the vertical height of the heating cooker can be achieved.
- a built-in adaptation type heating cooker according to the invention described in claim 12 features that this heating cooker further comprises a second cooling air passage adapted to cause a cooling air, which is supplied from the air blowing means, to blow toward an electronic component mounted in the heating cooker.
- the cooling air sent form the air blowing means passes through the second cooling air passage and is positively supplied to the electronic component.
- the influence of heat supplied from the heating chamber surrounding heat flow on the electronic component can be circumvented.
- a built-in adaptation type heating cooker according to the invention described in claim 13 features that the electronic component includes an infrared sensor.
- the infrared sensor provided on the heating chamber inner surface so as to measure the temperature of the heating chamber and the temperature of an object to be heated is cooled by the cooling air sent from the second cooling air passage, so that the influence of heat supplied from the heat source (the inner part heating heater) on the infrared sensor is circumvented.
- a built-in adaptation type heating cooker according to the invention described in claim 14 features that the electronic component includes a heat-driving component disposed under the heating chamber.
- a cooling air is supplied to parts provided under the heating chamber from the second cooling air passage to thereby cool electronic components, such as the heat-driving component (the magnetron) and the control circuit board, disposed under the heating chamber.
- electronic components such as the heat-driving component (the magnetron) and the control circuit board.
- reference numeral 23 designates a heating chamber
- reference numeral 27 denotes a heating operation portion
- reference numeral 29 designates an exhaust slot
- reference numeral 33 denotes a magnetron (a heat-driving component)
- reference numeral 35 designates an upper heating heater
- reference numeral 37 denotes a heating inner surface
- reference numeral 39 designates a back plate
- reference numeral 41 denotes a convection heater (an inner part heating heater)
- reference numeral 49 designates an infrared sensor (an electronic component)
- reference numeral 51 denotes an air blowing means
- reference numeral 53 designates an upper heat collecting chamber
- reference numeral 55 denotes a mixing means
- reference numeral 57 designates a first heat flow passage
- reference numeral 59 denotes a second heat flow passage
- reference numeral 61 designates a third heat flow passage
- reference numeral 67 denotes a second cooling air passage
- reference numeral 69 designates a partition plate
- FIG. 1 is an external appearance perspective view illustrating a state in which an opening/closing door of a built-in adaptation type heating cooker according to the invention is opened.
- FIG. 2 is a perspective view of a body case from which a face panel is removed, taken obliquely from behind.
- FIG. 3 is a plan view of the top surface of the body case shown in FIG. 2.
- FIG. 4 is a perspective view of a second cooling air passage.
- FIG. 5 is a perspective view of the body case taken from front.
- FIG. 6 is an enlarged perspective view of a part in the vicinity of a mixing means.
- FIG. 7 is a cross-sectional view taken on line A-A shown in FIG. 5 .
- FIG. 8 is an explanatory view illustrating a thermal flow.
- FIG. 8 is an explanatory view illustrating a thermal flow.
- FIG. 9 is a perspective view of the mixing means taken obliquely from behind.
- FIG. 10 is an exploded perspective view of the mixing means taken obliquely from front.
- FIG. 11 is an explanatory view illustrating an operation of the mixing means.
- a description is given of this embodiment by properly referring to FIGS. 1 to 11.
- a built-in adaptation type heating cooker (hereunder referred to simply as a "heating cooker") 100 according to this embodiment is configured so that a heating chamber 23 is formed in a front-opened box-shaped body case 21, and that an opening/closing door, which has a translucent window 25a and is used to open and close a heating-object output opening, is openably installed in the front surface of the body case 21.
- a heating operation portion 27, which is adapted to perform a heating operation, and an exhaust slot 29 are collaterally disposed.
- the heating operation portion 27 is provided with a display portion, in addition to a start switch, a heating mode switch, and an automatic cooking switch.
- the heating operation portion 27 and the exhaust slot 29 are collaterally placed at the top of the heating cooker 100. This enhances the operability of the heating operation portion 27.
- a high frequency generating portion 31 is disposed in a space under the heating chamber 23.
- the high frequency generating portion 31 is provided with a magnetron 33 and a stirrer blade 34, which are shown in FIG. 2.
- the high frequency generating portion 31 is adapted to disperse high frequency waves, which are generated by the magnetron 33, to the entire heating chamber 23 by using the stirrer blade 34 for high-frequency stirring.
- the high-frequency generating portion 31 and the stirrer blade 34 are placed not only on the bottom portion but on another side of the heating chamber 23.
- the upper heating heater 35 (see FIGS. 1 and 7) serving one of heat sources is provided on the top surface of the heating chamber 23.
- the upper heating heater 35 is adapted to generate heat to thereby perform a heating operation on the object in the heating chamber 23 using radiation heat.
- An inner part heating heater (a convection heater) 41 serving as a heat source is disposed on the back of the heating chamber inner surface 37 (that is, between the heating chamber inner surface 37 and a back plate 39 shown in FIG. 7).
- the convection heater 41 is formed like a frame and is disposed in a sealed space between the heating chamber inner surface 37 and the back plate 39.
- a circulation fan 43 is provided to the center of the convection heater 41.
- the intake hole 45 and the exhaust hole 47 are dug in the heating chamber inner surface 37.
- the circulation fan 43 is rotationally driven, so that the following hot air circulation is established. That is, the air contained in the heating chamber 23 is sucked through the intake hole 45. Then, the sucked air is then heated by the convection heater 41. Subsequently, the heated air is returned to the heating chamber 23 again through the exhaust hole 47. Consequently, the inside of the heating chamber 23 can uniformly be heated to a high temperature.
- Operations of the convection heater 41 and the circulation fan 43 are performed according to control commands issued from the control portion provided with a microprocessor (not shown). Further, this control portion is supplied with electric power from a power supply portion connected to a commercial power supply, and is adapted to control the supply of electric power to each of the heat sources.
- An infrared sensor 49 serving as an electronic component is provided on the rear side of the heating chamber inner surface 37, as shown in FIG. 7.
- the infrared sensor 49 is adapted to detect the temperature of the heating chamber 23 and that of an object to be heated.
- the value of the temperature detected by the infrared sensor 49 is sent to the control portion.
- the control portion sets timing, with which the heat sources are controlled, according to this value of the detected temperature or by measuring an elapsed time, such as a heating time, through the use of a timer.
- the heating cooker 100 having the aforementioned configuration is accommodated in a predetermined storage space of a cabinet of a built-in kitchen (not shown) by exposing only the front side thereof to the outside.
- a main heat flow supplied from the heating chamber 23 which is heated by the heat sources, such as the high-frequency generating portion 31, the upper heating heater 35, and the convection heater 41, and a heating chamber surrounding flow generated by these heat sources are mixed with a cooling air. Thereafter, the mixture air is exhausted from the exhaust hole 47 to the outside of the storage space.
- the cooker is provided with a blowing means (for example, a sirocco fan) 51 shown in FIG. 2, which is adapted to generate a cooling air C, an upper heat collecting chamber 53 provided above the heating chamber 23 and adapted to join the heat flows, and a mixing means 55 disposed upstream of the exhaust slot 29 and adapted to mix the heat flows, which are collected in the upper heat collecting chamber 53, with a cooling air, as basic constituents therefor.
- a blowing means for example, a sirocco fan
- the upper heat collecting chamber 53 includes a first heat flow passage 57 adapted to lead a main heat flow Q, which I introduced thereto from the heating chamber 23 through a ventilation hole 24 and a ventilation passage 26 (see FIG. 5) to the mixing means 55, a second heat flow passage 58 adapted to guide a heating chamber surrounding heat flow q to the mixing means 55, and a third heat flow passage 58 configured to join the first heat flow passage 57 and the second heat flow passage 59 at an inlet 61a and to guide the joined flow to the mixing means 55.
- the main heat flow A and the heating chamber surrounding heat flow whose temperature is lower than this main heat flow are joined in the third heat flow passage 61.
- the temperature of the main heat flow Q is dropped before this flow flows into the mixing means 55.
- the aforementioned upper heating heater 35 is provided on the top surface side of the heating chamber 23.
- the second heat flow passage 59 is formed to include an upper space provided above the placement plane region S of this upper heating heater 35. Therefore, heat transmitted from the placement plane region S of the upper heating heater 35 is fed to the third heat flow passage 61 by the heating chamber surrounding heat flow q that moves in the second heat flow passage 59. Thus, the temperature of the placement plane region S can be prevented from excessively rising.
- the aforementioned air blowing means 51 is provided on the back surface of the heating cooker 100.
- the air blowing means 51 is covered with a chamber 63 having an intake opening in, for example, the back surface or the bottom surface thereof (see FIG. 2).
- a duct 65 is connected to the chamber 63, and branches into two channels, one of which is connected to a first cooling air passage (to be described later), and the other of which is a second cooling air passage 67.
- the air blowing means 51 is rotationally driven to thereby send air, which is sucked from the intake opening, to the first cooling passage and the second cooling passage 67.
- the air blowing means 51 is adapted to suck the air at the back side of the heating cooker 100.
- the heating cooker 100 is built into the storage space provided in the cabinet of the built-in kitchen, as described above. Air is sucked from the back surface thereof. Thus, the air flows into the heating cooker through clearance or the like of the cabinet. This eliminates the necessity for providing an intake opening. Consequently, the placement of the heating chamber 23 at an upper part and the suppression of increase in the vertical height of the heating cooker 100 can be achieved.
- the convection heater 41 is surrounded by the heating chamber inner surface 37 and the back plate 39 (see FIG. 7).
- a partition plate 69 is disposed to face the heating chamber inner surface 37 across the back plate 39.
- a rear space 40 is provided between the partition plate 69 and each of this back plate 39 and the heating chamber inner surface 37.
- An opening hole 73 is dug in a top surface 71 constituting the second heat flow passage 59, and is adapted to lead a heat flow generated between the back plate 39 and the partition plate 69 (the rear space 40) to the upper heat collecting chamber 53 (see FIG. 3).
- the top surface 71 and both side surfaces of the body case 21 are covered with a face panel 75 (see FIG. 2).
- a partition wall 77 having a U-shape in plan view thereof is provided on the top surface 71.
- the upper heat collecting chamber 53 is provided inside this partition wall 77.
- a first cooling air passage 79 covered with the partition wall 77, the heating operation portion 27, and the face panel 75 is provided outside the partition wall 77 (see FIG. 3).
- a cooling air CA1 sent from the air blowing means 51 is blown against the third heat flow passage 61 in a direction perpendicular to a direction of a heat flow in the third heat flow passage 61, as shown in FIG. 6.
- the main heat flow Q joins with the heating chamber surrounding heat flow q in the third heat flow passage 61 and is lowered in temperature.
- the joined heat flows are lowered in temperature by cooling the third heat flow passage 61 from the outside with the cooling air CA1.
- a part of this cooling air CA1 is blown against the third heat flow passage 61 and flows toward the mixing means 55.
- the rest of the cooling air CA1 flows along the first cooling passage 79 to an electrical chamber 60 provided under the heating chamber 23 through opening holes 64 and 66 (see FIGS. 3 and 5).
- the heating operation portion 27 is disposed along the front surface of the heating cooker 100 at substantially the same height as that of the aforementioned heat collecting chamber 53 above the heating chamber 23. Further, a first cooling air passage 79 is formed to extend toward the heating operation portion 27. An end of the first cooling air passage 27, which end reaches the heating operation portion 27, is bent at a right angle and is formed along the back surface extending in a longitudinal direction of the heating operation portion 27. Therefore, the heating operation portion 27 is always cooled by the cooling air flowing through the first cooling air passage 79 and is not affected by heat transmitted from the upper heat collecting chamber 53. Consequently, the upper heat collecting chamber 53 and the heating operation portion 27 can be placed on substantially the same plane.
- a part of the first cooling air passage 79, which part extends up to the operating operation portion 27, is disposed outside the side surfaces of the heating chamber.
- a part of the first cooling air passage 79, which part extends along the operating operation portion 27, is disposed outside the placement plane region S of the upper heating heater 35, which is set on the top surface of the heating chamber.
- the second cooling air passage 67 branched from the duct 65 serves to blow a cooling air CA2, which is outputted from the air blowing means 51, toward an electronic component mounted in the heating cooker 100. That is, the cooling air CA2 sent form the air blowing means 51 passes through the second cooling air passage 67 and is positively supplied to the electronic component. Thus, the influence of heat supplied from the heating chamber surrounding heat flow q on the electronic component can be circumvented.
- an example of the electronic component to be cooled is the infrared sensor 49.
- the infrared sensor 49 is provided between the heating chamber inner surface 37 and the partition plate 69.
- An opening 81 is formed as a cooling air passage in the partition plate 69 provided in the rear of the infrared sensor 49. This opening 81 is covered with the second cooling air passage 67 with which the exterior of the partition plate 69 is covered.
- a divider 83 constituted by a U-bent sheet metal member shown in FIG. 4 is provided in the second cooling air passage 67.
- the divider 83 is adapted to introduce a cooling air CA3 from this opening 81 and to blow the cooling air CA3 to the infrared sensor 49.
- the infrared sensor 49 provided on the heating chamber inner surface 37 is cooled by the cooling air CA 3 sent from the second cooling air passage 67, so that the influence of heat supplied from the convection heater 41 on the infrared sensor 49 is circumvented.
- the cooling air CA3 is exhausted from the upper opening hole 73 to the upper heat collecting chamber 53.
- the heat-driving components include the magnetron 33 of the high frequency generating portion 31 and a control circuit board 85.
- the downstream end 67a of the second cooling air passage 67 is connected to the gap 50 between a side surface of the heating chamber 23 and the face panel 75 (see FIG. 2). This gap 50 communicates with the rear space 40 and the space 60 provided under the heating chamber 23. Therefore, a cooling air CA4 is supplied to parts provided under the heating chamber 23 from the second cooling air passage 67 to thereby cool electronic components, such as the heat-driving component (the magnetron 33) and the control circuit board 85, disposed under the heating chamber 23.
- cooling air CA4 supplied to the parts provided under the heating chamber 23 are exhausted to the outside from an exhaust slot 86 shown in FIG. 2. Further, a pat of the cooling air CA4 supplied to the gap 50 flows into the rear space 40 and is then exhausted from the opening hole 73 to the upper heat collecting chamber 53.
- this heating cooker 100 an object to be heated is placed in the heating chamber 23. Then, the opening/closing door 25 is closed. Subsequently, various kinds of switches provided in the heating operation portion 27 are operated to set a desired heating mode. Thereafter, a start switch is depressed. Further, in a case where the object is heated in an automatic cooking mode, a preliminarily stored cooking program is selected by depressing an automatic cooking switch or the like. Then, the start switch is depressed.
- each heating pattern is preliminarily stored as a cooking program, and is optionally selected and executed by operating the automatic cooking switch or the like of the heating operation portion.
- the temperature of the object in the heating chamber 23 is detected by the infrared sensor 49.
- An elapsed time, such as a heating time is measured according to the temperature of the object or through the use of a timer. Then control timing, with which each component is controlled, is set.
- FIG. 8 shows heat flows flowing during the cooking. That is, a heating chamber surrounding heat flow q supplied from the upper heating heater 35 flows into the upper heat collecting chamber 53 through the top surface 71. A heating chamber surrounding heat flow q supplied from the convection heater 41 flows into the upper heat collecting chamber 53 through the opening hole 73. Further, the cooling air CA3 having been blown by the air blowing means 51 and also having cooled the infrared sensor 49 flows into the upper heat collecting chamber 53 through the opening hole 73. Also, the cooling air CA4 having been blown by the air blowing means 51 through the second cooling air passage 67 flows into the part provided under the heating chamber 23 to thereby cool the high frequency generating portion 31, the magnetron 33, and the control circuit board 85. Then, the cooling air CA4 is exhausted from the exhaust slot 86 to the outside. Additionally, a part of the cooling air CA4 flows into the gap between the partition plate 69 and the back plate 39 and is exhausted from the opening hole 73 to the upper heat collecting chamber 53.
- the main heat flow Q supplied from the heating chamber 23 passes in the upper heat collecting chamber 53 through the first heat flow passage 57 and flows into the mixing means 55. Further, the cooling air CA1 blown by the air blowing means 51 flows into the mixing means 55 after cooling the heating operation portion 27 while passing through the first cooling air passage 79.
- the mixing means 55 is fixed to the downstream end of the third heat flow passage 61.
- the mixing means 55 has at least an upstream diffusion plate 93 and a downstream diffusion plate 95, which are disposed substantially in parallel to each other to be spaced from each other by a predetermined distance and are configured so that airholes 91 are formed in each of the diffusion plates.
- the upstream diffusion plate 93 and the downstream diffusion plate 95 are covered with a cover 96 shown in FIG. 9, so that the gap (space) 97 is formed therebetween.
- a vent 99 adapted to lead the heat flows (Q + q) supplied from the upper heat collecting chamber 53 into the space 97 is formed in the upstream diffusion plate 93.
- a baffle plate 101 adapted to stagnate the flows (Q + q) supplied from the upper heat collecting chamber 53 is formed in the mixing means 55.
- This baffle plate 101 is formed at a place so that the vent 99 of the upstream diffusion plate 93 faces the baffle plate 101 of the downstream diffusion plate 65.
- the heat flow having flowed into the mixing means 55 from the upper heat collecting chamber 53 hits against the baffle plate 101 of the downstream diffusion plate 65 and temporarily stagnates and diffuses. During that, the temperature of the heat flow Q or q is lowered by the thermal conduction between the mixing means 55 and the heat flow Q or q and by the heat transfer between the heat flow and a mixture with cool air.
- the main heat flow Q supplied from the first heat flow passage 57 and the heating chamber surrounding heat flow q supplied from the upper heat collecting chamber 53 pass through the vent 99 and flow into the space 97 between the upstream diffusion plate 93 and the downstream diffusion plate 95 and then hit against the baffle plate 101, so that the flows become a stirred flow.
- the cooling air CA1 having been supplied from the first cooling air passage 79 and also having passed through the airhole 91 of the upstream diffusion plate 93 flows into this space 97.
- the cooling air CA1 having flowed thereinto is mixed with the stirred flow to thereby promote heat transfer.
- the main heat flow Q, the heat chamber surrounding heat flow q, and the cooling air CA1 sufficiently perform heat exchange thereamong in the limited space 97, so that the temperature of each of the heat flows is lowered.
- the mixture flow lowered in temperature passes through the airhole 91 of the downstream diffusion plate 95 is exhausted from the exhaust slot 29.
- a louver 103 adapted to limit the direction of the air to a downstream direction of the baffle plate 101 is provided in the mixing means 55.
- the louver 103 is provided downstream of the baffle plate 101, so that a hand or a finger can be prevented from touching the baffle plate 101 whose temperature becomes high.
- the louver 103 is disposed downstream of the baffle plate 101 by a predetermined distance, so that the exhaust heat flow is lower in temperature.
- the direction of the air is regulated by the louver 103, so that a hot-air warning region is narrow.
- the outside air is sucked by the air blowing means 51 to thereby generate a cooling air C.
- the heat flows (the main heat flow Q and the heating chamber surrounding heat flow q) are collected in the upper heat collecting chamber 53 above the heating chamber 23.
- the first heat flow passage 57 in which the main heat flow Q flows, is cooled by the heating chamber surrounding heat flow q, which is lower in temperature than the main heat flow Q.
- the heat flows are mixed to thereby lower the temperature of the min heat flow Q.
- the cooling air CA1 is mixed with the mixed heat flows (Q + q), which are supplied from the upper heat collecting chamber 53, by the mixing means 55 disposed upstream of the exhaust slot 29.
- a high-temperature air and a cooling air can highly efficiently be mixed by a small number of the air blowing means 51.
- the capacity of the mixing portion can be reduced. For example, when the heating chamber is heated to 300°C, the temperature of a heat flow flowing through the third heat flow passage 61 exceeds 100°C. However, the temperature of the heat flow is lowered by the cooling air CA1 supplied from the first cooling air passage 79. Thus, the heat flow is changed to a warm air, which has a temperature of about 60°C and is exhausted from the exhaust slot 29.
- the heating operation portion 27 is disposed in a newly assured upper space. Consequently, both the heating chamber 23 and the heating operation portion 27 can be disposed at upper positions. Further, because the exhaust slot 29 does not extend over the entire width of the heating cooker 100, the hot-air warning region is narrowed. Thus, the added value of articles is enhanced. Furthermore, because the number of the air blowing means 51 is 1, the cost of components of heating cooker 100, the power consumption thereof, and the operation noises thereof can be reduced, as compared with the conventional built-in adaptation type heating cooker that requires a plurality of air blowing means.
- the built-in adaptation type heating cooker includes an air blowing means adapted to suck air and to generate a cooling air, an upper heat collecting chamber provided above the heating chamber and adapted to join heat flows, and a mixing means disposed upstream of the exhaust slot and adapted to mix a heat flow collected in the upper heat collecting chamber with a cooling air.
- an air blowing means adapted to suck air and to generate a cooling air
- an upper heat collecting chamber provided above the heating chamber and adapted to join heat flows
- a mixing means disposed upstream of the exhaust slot and adapted to mix a heat flow collected in the upper heat collecting chamber with a cooling air.
- a built-in adaptation type heating cooker which excels in workability and operability, can be obtained. Furthermore, because the number of the air blowing means is 1, the cost of components of heating cooker, the power consumption thereof, and the operation noises thereof can be reduced, as compared with the built-in adaptation type heating cooker that requires a plurality of air blowing means.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Baking, Grill, Roasting (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003169383A JP4115889B2 (ja) | 2003-06-13 | 2003-06-13 | ビルトイン対応型加熱調理器 |
PCT/JP2004/008572 WO2004111542A1 (ja) | 2003-06-13 | 2004-06-11 | ビルトイン対応型加熱調理器 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1640666A1 true EP1640666A1 (de) | 2006-03-29 |
EP1640666A4 EP1640666A4 (de) | 2008-07-16 |
Family
ID=33549366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04736697A Withdrawn EP1640666A4 (de) | 2003-06-13 | 2004-06-11 | Zur verwendung für integrierte anwendung fähige koch-heizvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1640666A4 (de) |
JP (1) | JP4115889B2 (de) |
CN (1) | CN100462633C (de) |
WO (1) | WO2004111542A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2064493A1 (de) * | 2006-09-12 | 2009-06-03 | LG Electronics, Inc. | Kochvorrichtung |
US7825358B2 (en) | 2006-09-01 | 2010-11-02 | Lg Electronics Inc. | Cooking apparatus having rear component space |
US8143560B2 (en) | 2006-09-12 | 2012-03-27 | Lg Electronics Inc. | Cooking apparatus |
US8168928B2 (en) | 2006-09-12 | 2012-05-01 | Lg Electronics Inc. | Cooking apparatus |
EP2463587A3 (de) * | 2010-12-13 | 2014-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Gargerät |
US8785828B2 (en) | 2009-04-28 | 2014-07-22 | Sharp Kabushiki Kaisha | Cooking device |
EP3599422A1 (de) * | 2018-07-23 | 2020-01-29 | Lg Electronics Inc. | Kochgerät |
EP4164335A1 (de) * | 2021-10-11 | 2023-04-12 | Whirlpool Corporation | Hohlraumbelüftung mit hohem durchfluss |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4439575B2 (ja) * | 2008-08-29 | 2010-03-24 | シャープ株式会社 | 加熱調理器 |
JP2013079744A (ja) * | 2011-10-03 | 2013-05-02 | Toshiba Corp | 加熱調理器 |
CN103615751B (zh) * | 2013-11-20 | 2015-09-23 | 美的集团股份有限公司 | 微波炉 |
KR102502178B1 (ko) * | 2016-01-12 | 2023-02-21 | 삼성전자주식회사 | 조리 기기 및 조리 기기의 제어 방법 |
WO2017206240A1 (zh) * | 2016-05-30 | 2017-12-07 | 广东美的厨房电器制造有限公司 | 嵌入式烹饪器具 |
JP6637584B2 (ja) * | 2018-12-26 | 2020-01-29 | 日立グローバルライフソリューションズ株式会社 | 加熱調理器 |
JP6823152B2 (ja) * | 2019-12-20 | 2021-01-27 | 日立グローバルライフソリューションズ株式会社 | 加熱調理器 |
US20240008149A1 (en) * | 2020-11-26 | 2024-01-04 | Sharp Kabushiki Kaisha | Heating cooking apparatus |
CN112587002B (zh) * | 2020-12-31 | 2022-07-12 | 广东美的厨房电器制造有限公司 | 安装支架及烹饪器具 |
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- 2004-06-11 EP EP04736697A patent/EP1640666A4/de not_active Withdrawn
- 2004-06-11 WO PCT/JP2004/008572 patent/WO2004111542A1/ja active Application Filing
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Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8304702B2 (en) | 2006-09-01 | 2012-11-06 | Lg Electronics Inc. | Cooking apparatus |
US8941041B2 (en) | 2006-09-01 | 2015-01-27 | Lg Electronics Inc. | Cooking apparatus having a cooling system |
US7825358B2 (en) | 2006-09-01 | 2010-11-02 | Lg Electronics Inc. | Cooking apparatus having rear component space |
US7910866B2 (en) | 2006-09-01 | 2011-03-22 | Lg Electronics Inc. | Cooking apparatus having multiple cooling flow paths |
US8035065B2 (en) | 2006-09-01 | 2011-10-11 | Lg Electronics Inc. | Cooking apparatus having a door with a built in control panel |
US8058594B2 (en) | 2006-09-01 | 2011-11-15 | Lg Electronics Inc. | Door for a cooking apparatus |
US8680449B2 (en) | 2006-09-01 | 2014-03-25 | Lg Electronics Inc. | Cooking apparatus |
US8164036B2 (en) | 2006-09-01 | 2012-04-24 | Lg Electronics Inc. | Cooking apparatus |
US8586900B2 (en) | 2006-09-01 | 2013-11-19 | Lg Electronics Inc. | Cooking apparatus having cooling flow path |
US8168928B2 (en) | 2006-09-12 | 2012-05-01 | Lg Electronics Inc. | Cooking apparatus |
EP2064493A1 (de) * | 2006-09-12 | 2009-06-03 | LG Electronics, Inc. | Kochvorrichtung |
US8143560B2 (en) | 2006-09-12 | 2012-03-27 | Lg Electronics Inc. | Cooking apparatus |
EP2064493A4 (de) * | 2006-09-12 | 2010-05-19 | Lg Electronics Inc | Kochvorrichtung |
US8785828B2 (en) | 2009-04-28 | 2014-07-22 | Sharp Kabushiki Kaisha | Cooking device |
EP2463587A3 (de) * | 2010-12-13 | 2014-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Gargerät |
EP3599422A1 (de) * | 2018-07-23 | 2020-01-29 | Lg Electronics Inc. | Kochgerät |
US11236910B2 (en) | 2018-07-23 | 2022-02-01 | Lg Electronics Inc. | Cooking appliance |
EP3961107A1 (de) * | 2018-07-23 | 2022-03-02 | LG Electronics Inc. | Kochgerät |
EP4164335A1 (de) * | 2021-10-11 | 2023-04-12 | Whirlpool Corporation | Hohlraumbelüftung mit hohem durchfluss |
Also Published As
Publication number | Publication date |
---|---|
CN100462633C (zh) | 2009-02-18 |
WO2004111542A1 (ja) | 2004-12-23 |
CN1806149A (zh) | 2006-07-19 |
JP2005003317A (ja) | 2005-01-06 |
EP1640666A4 (de) | 2008-07-16 |
JP4115889B2 (ja) | 2008-07-09 |
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