WO1998025085A1 - Dispositif chauffant - Google Patents

Dispositif chauffant Download PDF

Info

Publication number
WO1998025085A1
WO1998025085A1 PCT/JP1997/004078 JP9704078W WO9825085A1 WO 1998025085 A1 WO1998025085 A1 WO 1998025085A1 JP 9704078 W JP9704078 W JP 9704078W WO 9825085 A1 WO9825085 A1 WO 9825085A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
heating chamber
heating device
temperature detecting
detecting means
Prior art date
Application number
PCT/JP1997/004078
Other languages
English (en)
Japanese (ja)
Inventor
Hideki Terasawa
Kazuho Sakamoto
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to AU48864/97A priority Critical patent/AU4886497A/en
Publication of WO1998025085A1 publication Critical patent/WO1998025085A1/fr

Links

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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6464—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using weight sensors

Definitions

  • the present invention relates to a heating apparatus having an automatic thawing function.
  • the heating device includes: a heating chamber for accommodating an object to be heated; a high-frequency generating means for supplying microwave energy to the heating chamber; and a high-frequency generating means.
  • Driving means for driving; temperature detecting means installed in the heating chamber; and information from the temperature detecting means.
  • control means for controlling the driving means based on the control information.
  • the temperature detecting means continuously and temporally detects the temperature in the heating chamber, and based on the information detected by the temperature detecting means, the control means controls the driving means. Then, the object to be heated is heated, and the heating is automatically terminated.
  • the control means controls the magnitude of the output of the high-frequency generation means and the drive time based on the information detected by the temperature detection means.
  • the object to be heated is in a frozen state before heating
  • the control means has a function for thawing the object to be heated in the frozen state. This configuration enables optimal thawing of frozen foods and the like.
  • the temperature detecting means has a thermistor element thermally coupled to the inner surface of the heating chamber.
  • the temperature detecting means is exposed inside the heating chamber and is in close contact with the inner surface of a plate forming the heating chamber. According to this configuration, the temperature of the object to be heated can be detected more accurately, so that remarkably excellent heating or thawing becomes possible.
  • the heating chamber has a top plate, a rear plate, and a body plate
  • the temperature control means is installed in a region behind the top plate or in a region on the exhaust port side of the top plate. It has been done.
  • the heating chamber has a top plate, a rear plate, and a body plate
  • the temperature control means includes the top plate and the body plate. It is fixed to the top plate by an “L” -shaped mounting bracket fixed to the rear plate.
  • the temperature detecting means is fixed to a mounting bracket, and has a pair of a first bracket having a projection and a second bracket having a notch.
  • the mounting bracket having the temperature detecting means is fitted. According to the above configuration, the temperature of the object to be heated can be detected more accurately, and at the same time, the assembling work of the heating device is simplified, and the manufacturing cost is reduced.
  • FIG. 1 is a schematic view of a heating device according to an embodiment of the present invention and a configuration diagram without the configuration
  • FIG. 2 is a plan view of the heating device shown in FIG. 1
  • FIG. FIG. 4 is a perspective view of a heating chamber of the heating device shown in FIG. 4
  • FIG. 4 is a cross-sectional view of the temperature detecting means of the heating device shown in FIG. 1
  • FIG. 5 is a heating device shown in FIG.
  • FIG. 6 is a cross-sectional view of one embodiment of the mounting and fixing structure of the temperature detecting means of FIG. 6, and
  • FIG. 6 is a sectional view of another embodiment of the mounting and fixing of the temperature detecting means of the heating device shown in FIG.
  • FIG. 7 is a cross-sectional view, FIG.
  • FIG. 7 is a graph showing the ⁇ heating time-temperature detection means output '' characteristic of the heating device shown in FIG. 1
  • FIG. 8 is a heating device shown in FIG.
  • FIG. 9 is a plan view of the fixing structure for mounting the temperature detecting means of FIG. 9, and FIG. Plan diagram of a constant structure, when the first 0 Figure digits with which Ri taken in the heating chamber surfaces other preparative preparative only fitting with Ri dated only method Ri temperature detecting means of the heating device according to an embodiment of the present invention
  • FIG. 1 is a plan view and a side view of a heating device
  • FIG. 2 is a plan view of a mounting bracket of a temperature detecting means of a heating device according to an embodiment of the present invention.
  • FIG. 13 is a plan view showing the configuration when the detection means is attached and fixed, and FIG. 13 shows a position where the thermistor is attached to the carothermal chamber of the heating device according to one embodiment of the present invention.
  • FIG. 14 is a characteristic diagram showing “heating time-temperature detection means output” of the heating device according to one embodiment of the present invention.
  • FIG. 15 is an embodiment of the heating device according to one embodiment of the present invention.
  • FIG. 16 is a flow chart for explaining the operation of the present invention, and FIG. 16 is a view showing the relationship between “heating time and threshold” of the heating device according to one embodiment of the present invention. The figure shows the relationship between the "weight of food and the time to reach a threshold value" of the heating device according to one embodiment of the present invention.
  • Oh Ru a plan view your good beauty left side view of the heating apparatus of the inventions of one embodiment.
  • FIG. 3 is a perspective view of a heating chamber of the heating device according to one embodiment of the present invention.
  • the heating chamber 1 has an annular body 4, a front plate 6 and a rear plate 7.
  • the annular body portion 4 includes a copper plate 2 bent in a U-shape, and a top plate 3 joined to the copper plate 2.
  • the front plate 6 has an opening 5.
  • the annular body 4 has a first air inlet 9.
  • the rear plate 7 has a second air inlet 10.
  • the top plate 3 has a thermistor mounting hole 8.
  • FIG. 1 is a configuration diagram showing a configuration of a heating device according to an embodiment of the present invention
  • FIG. 2 is a plan view of the heating device.
  • the door 24 on the front of the heating chamber 1 closes the opening 5 of the heating chamber 1 by opening and closing itself.
  • the control means 18 displays the input cooking menu and numerical information on the display unit 22.
  • the heating of the object 15 placed on the placing plate 14 in the heating chamber 1 is started. Heating is performed by energizing the heating means via the driving means 20.
  • a magnet port 16 is provided as a heating means, and the heating chamber 1 is irradiated with a microwave through the waveguide 11. .
  • the mounting plate 14 is driven to rotate by the motor 13, and uneven heating of the object 15 is improved.
  • a thermistor 17 is used, and the thermistor 17 is connected to a control means 18 via a detecting circuit 19. Further, the heat sink 17 is exposed into the heating chamber 1 via a heat sink mounting hole 8 opened in the top plate 3. According to the fan 23, the outside air taken in from the second intake port 10 is the first intake port consisting of the magnet port 16 and the punching metal. After passing through 9, the heat generated from the heated object 15 is transmitted to the summiter 17 and exhausted from the exhaust port 12 formed by the punching metal. .
  • a hammer type thermistor is used as the thermistor 17, for example.
  • FIG. 4 shows a sectional view of the thermistor 17. In FIG.
  • a summit element 54 is provided at the end of a lead section 56 fixed to a metal case 52 with a filler 55, and the summit element is provided.
  • the heater element 54 is bonded to the metal case 52 with a silicone resin 53 having excellent thermal conductivity and heat resistance. That is, the thermistor element 17 is thermally coupled to the metal case 52.
  • the output characteristics of the thermistor 17 greatly differ depending on the method of mounting the thermistor 17.
  • the method in which the thermistor 17 is mounted by way of the punching metal 31 and is not exposed to the heating chamber 1 and the thermistor One possible way is to expose 17 to heating chamber 1.
  • the following two types of thermistor mounting methods were compared and examined.
  • One method is to install a punching metal 31 on the top plate 3 of the heating chamber 1 as shown in Fig. 5, and to use a
  • This is a method of mounting the thermistor 17 via the guide 32 with the above resin material.
  • the thermistor element 54 in the thermistor 17 is not thermally coupled to the inner surface forming the heating chamber 1 and the thermistor 1
  • the output of 7 is governed by the ambient temperature in the heating chamber 1.
  • a method of exposing the collector 17 to the inside of the heating chamber 1 and attaching it directly to the top plate 3 constituting the heating chamber 1 is used. It is.
  • the collector 17 is directly connected to the atmosphere in the heating chamber 1, and the collector element 54 is connected to the heater 54 as shown in FIG. It is thermally connected to the top plate 3 of the heating chamber 1 via the metal case 52.
  • FIG. 6 is a cross-sectional view of the first method in which the thermistor 17 is attached to the top plate 3, and FIG. 8 is a plan view thereof.
  • the mounting bracket 51 is L-shaped. The thermistor 17 is inserted into the mounting hole 8, and then the protrusion 52 a of the metal case of the thermistor 17 is attached to the first area of the top plate 3.
  • the mounting bracket 51 has a slit portion 25, and depending on the configuration, the lead portion is provided. It is possible to assemble without passing through the end of the mounting bracket 56 through the hole of the mounting bracket 51, and it is possible to improve production efficiency.
  • FIGS. 10, 11 and 12 Describes the second method for mounting the thermostat in the heating chamber
  • the explanatory diagrams for this purpose are shown in FIGS. 10, 11 and 12.
  • the projection 26 a formed by bending the tip of one side of the L-shaped bracket 26 around the thermistor mounting hole 8 in FIG.
  • the notch 27 b of the notched flat metal piece 27 is centered on the notch 27 b in the direction of the arrow so that the protrusion 27 a is directed into the heating chamber.
  • the L-shaped fitting 26 and the flat metal fitting 27 are welded to the top plate 3 of the heating chamber 1 with the L-shaped fitting 26 and the flat metal fitting 27 facing each other.
  • the mounting bracket 28 has a notch 29. Insert the thermistor 17 into the mounting hole 8, then fit the notch 29 of the mounting bracket 28 into the projection 26 a, and then Then, twist the projection 27 a of the flat metal fitting 27. In this way, the mounting bracket 28 is fixed.
  • the completed installation is shown in Fig. 12.
  • the mounting bracket 28 has a slit portion 30, and the slit portion 30 passes through the lead portion 56. Are assembled.
  • the first mounting position 50 and the second mounting position 33 shown in FIG. 13 were compared.
  • the first mounting position 50 is near the top of the top 3 and the second mounting position 33 is Near the center of the city.
  • Figure 14 shows the results.
  • when the thermistor was installed at the first mounting position 50 particularly excellent performance was exhibited.
  • a tall load as if frozen shows a change in output similar to a 3 kg low-profile pig surroin (dotted line, f).
  • the characteristics of eye 2 were slightly inferior.
  • Fig. 17 shows the results of an experiment on the relationship between the time required to reach the threshold value B and the weight of the food when the capacity of the heating chamber is different.
  • the monitor was installed at the second mounting position 33 in Fig. 13.
  • the time required to reach the threshold value B increases as the weight of the food increases.
  • the capacity of the heating chamber is large, the time to reach the threshold value B with respect to the weight of the food shows a small change. In other words, when the volume in the warehouse is large, the correlation between the food weight and the time to reach the threshold value B tends to become poor. Let us consider the reason for this using the heating device shown in Fig. 18.
  • the blown air from the fan 23 removes the object to be heated 15 from the intake hole 9, and then the air flows through the vicinity of the thermistor mounting hole 8. After that, it is exhausted from the exhaust port 12.
  • the inside volume of the heating chamber is large, the object to be heated 15 is placed near the hole 8 for mounting the thermistor.
  • the blown air becomes difficult to collect. Therefore, if the summiter 17 is mounted in the mounting hole formed at the third mounting position 49 near the left end of the top plate 3, the internal capacity of the cabinet will be large. Even at this time, at the threshold value approximately 1.3 times the threshold value B, when the internal capacity is small, the mounting formed at the first mounting position 50 is small.
  • the width of the heating chamber is A w
  • the depth is B d
  • the height is Ch.
  • the mounting position is not limited to the first mounting position 50 near the top plate 3 as long as the above (items 1 to 3) are satisfied, and may be at any position.
  • a fourth mounting position 34 on the side surface of the copper plate 2 is also possible.
  • control algorithm In automatic cooking using a sensor, the control algorithm is stored in the control means in advance, and driven according to the output of the sensor. A control signal is issued to the means to control the heating energy and determine the cooking time.
  • control means 18 When the user puts the object to be heated 15 into the heating chamber 1 and selects “thaw” with the keyboard 21, the control means 18 firstly proceeds to the process 35 with the thermometer. Take in the output of unit 17 (this value is V (0)). After the completion of the output capture, the control means 18 drives the drive means 20 and the like in step 36 to start heating. During the heating, at step 37, the output of the monitor 17 is captured at regular intervals (this value is set to V (t)).
  • “T” is the heating time until ⁇ V (t) becomes V1 or more in step 39, and “T0” and “B” are the control means 1 in advance. This is the value stored in 8.
  • steps 42 and 43 the calculated ⁇ is subtracted at regular intervals, and the heating is terminated when the difference becomes “0” or less.
  • FIG. Fig. 16 shows the relationship between the heating time (t) and the output change value (V) when heating 450 g of beef mince and 2 kg of pork surroin. Show the relationship. Normally, when performing output processing using a temperature sensor, a so-called minimum holder is used, but in this embodiment, a minimum holder is used. No. As shown in Fig. 16, the larger the weight of the object to be heated 15, the greater the amount of dip compared to the initial output of the thermistor There is a tendency .
  • waveform "e” is the output when 450 g of beef mince is used as the object to be heated, and the initial drop of waveform “e” is almost the same.
  • the time from the captured output “V eI” to the point “V e2” where the threshold value C is reached is “t 11”.
  • the waveform “f” is an output when 2 kg of pig surroin is used, and an initial dip in the waveform “f” occurs.
  • the interval is “t2!”.
  • the time from the output “V fi” captured in step 35 to the point “V f 3” indicating the change of the threshold value C is “t 22”.
  • the above-described items 1 to 3 can be applied even if the thermistor element is not thermally connected.
  • a configuration that satisfies the condition for example, a configuration that amplifies the output of the temperature detection means by a circuit is also possible.
  • the degree of heating progress of the frozen food is detected by the output of the temperature detecting means mounted in the heating chamber, and the driving means is controlled.
  • the configuration is as follows. With this configuration, it is possible to easily detect the degree of heating of the defrosted food without using complicated conventional methods, and to realize the optimum defrosting. The cost can be reduced.
  • the change in the output value of the thermistor is large and the thermistor element has a large change in the output value.
  • the "output change-load weight" characteristic of the star is improved.
  • the temperature detection means is exposed into the heating chamber, and at the same time, is brought into close contact with the inner surface of the plate forming the heating chamber, so that the temperature sensor is exposed.
  • the change in force value is also large, and the "output change-load weight" characteristic in the summer is improved.
  • the temperature detection means is attached to the rear of the tabletop, so that the stable output of thermistor is independent of the shape of the load. Characteristic ”is improved.
  • the temperature detection means can be attached to the left side of the top plate to increase the threshold value and increase the size of the inside of the cabinet. The characteristics of "time to reach the threshold value of CJCI weight" are improved.
  • the “output change-load weight of the The characteristics are improved.
  • the mounting configuration is simplified, and The downsizing is achieved, and the workability is further improved.
  • the workability is improved by fixing the thermistor by using the slit-formed bracket.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Electric Ovens (AREA)

Abstract

L'invention concerne un dispositif chauffant présentant une fonction de décongélation automatique, lequel est simple et d'un coût avantageux comparé à un capteur de poids classique, et un système de détection d'intensité de champ dans une chambre de chauffage au moyen d'une antenne. Un thermistor (17) est exposé à l'intérieur d'une chambre de chauffage (1) et est monté sur la surface intérieure d'une plaque constituant la chambre de chauffage afin de détecter la température dans ladite chambre de chauffage (1). La sortie du thermistor permet de mesurer la progression du chauffage d'un aliment congelé. Un moyen de commande (18) commande un moyen d'attaque (20) d'un moyen (16) produisant des hautes fréquences sur la base d'informations détectées.
PCT/JP1997/004078 1996-12-03 1997-11-10 Dispositif chauffant WO1998025085A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48864/97A AU4886497A (en) 1996-12-03 1997-11-10 Heating device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP32255296 1996-12-03
JP8/322552 1996-12-03
JP9/87918 1997-04-07
JP8791897A JPH10223366A (ja) 1996-12-03 1997-04-07 加熱装置

Publications (1)

Publication Number Publication Date
WO1998025085A1 true WO1998025085A1 (fr) 1998-06-11

Family

ID=26429145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/004078 WO1998025085A1 (fr) 1996-12-03 1997-11-10 Dispositif chauffant

Country Status (3)

Country Link
JP (1) JPH10223366A (fr)
AU (1) AU4886497A (fr)
WO (1) WO1998025085A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5359378B2 (ja) * 2009-03-03 2013-12-04 パナソニック株式会社 高周波加熱装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627836A (en) * 1979-08-16 1981-03-18 Matsushita Electric Ind Co Ltd Cooking oven
JPS6141827A (ja) * 1984-07-11 1986-02-28 マイクロウエイブ・オーブンズ・リミテツド 電子レンジ
JPS62293022A (ja) * 1986-06-11 1987-12-19 Matsushita Electric Ind Co Ltd 加熱調理器
JPH05149548A (ja) * 1991-11-27 1993-06-15 Toshiba Corp 加熱調理器
JPH0627167A (ja) * 1992-07-06 1994-02-04 Mitsubishi Materials Corp マイクロ波エネルギ検出装置
JPH08312967A (ja) * 1995-05-24 1996-11-26 Toshiba Corp 加熱調理器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627836A (en) * 1979-08-16 1981-03-18 Matsushita Electric Ind Co Ltd Cooking oven
JPS6141827A (ja) * 1984-07-11 1986-02-28 マイクロウエイブ・オーブンズ・リミテツド 電子レンジ
JPS62293022A (ja) * 1986-06-11 1987-12-19 Matsushita Electric Ind Co Ltd 加熱調理器
JPH05149548A (ja) * 1991-11-27 1993-06-15 Toshiba Corp 加熱調理器
JPH0627167A (ja) * 1992-07-06 1994-02-04 Mitsubishi Materials Corp マイクロ波エネルギ検出装置
JPH08312967A (ja) * 1995-05-24 1996-11-26 Toshiba Corp 加熱調理器

Also Published As

Publication number Publication date
AU4886497A (en) 1998-06-29
JPH10223366A (ja) 1998-08-21

Similar Documents

Publication Publication Date Title
US4520250A (en) Heating apparatus of thawing sensor controlled type
US8695487B2 (en) Cooking appliance
KR900008543B1 (ko) 자동 가열장치
US4401884A (en) Method of controlling heating in food heating apparatus including infrared detecting system
US5530229A (en) Heating time control apparatus and method thereof for microwave oven
JP2004184060A (ja) 電子レンジ及びその制御方法
EP3561381B1 (fr) Procédé pour commander un composant de système de chauffage pour un fonctionnement simple et sûr et composant de système de chauffage correspondant
US9062906B2 (en) Retrofittable air conditioner to refrigeration conversion unit
JPH1096517A (ja) サーモパイルセンサを用いた電子レンジ及びその解凍方法
US5360966A (en) Microwave oven with temperature fluctuation detection
WO1998025085A1 (fr) Dispositif chauffant
KR100214598B1 (ko) 써모파일형 온도센서를 이용한 전자레인지 및 그의 자동해동방법
CN113662421B (zh) 烹饪器具及其控制方法和控制装置、可读存储介质
JPS642858B2 (fr)
KR100671899B1 (ko) 전자렌지의 바베큐 모드 제어장치 및 방법
JPH04273916A (ja) 加熱調理装置
JP3316926B2 (ja) 調理器具
JP2002345640A (ja) 調理器
JP2920796B2 (ja) 高周波加熱装置
JPS6161515B2 (fr)
JP5471436B2 (ja) 加熱調理器
JP2000130764A (ja) ヒーター付き高周波加熱装置
KR0146131B1 (ko) 마이크로웨이브오븐의 자동조리 장치 및 방법
JP3090168B2 (ja) 炊飯器
JP3600425B2 (ja) 電子レンジ

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CN KR NZ US

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)