JP2892710B2 - Refrigerator with thawing room - Google Patents
Refrigerator with thawing roomInfo
- Publication number
- JP2892710B2 JP2892710B2 JP1275317A JP27531789A JP2892710B2 JP 2892710 B2 JP2892710 B2 JP 2892710B2 JP 1275317 A JP1275317 A JP 1275317A JP 27531789 A JP27531789 A JP 27531789A JP 2892710 B2 JP2892710 B2 JP 2892710B2
- Authority
- JP
- Japan
- Prior art keywords
- thawing
- temperature
- room
- heater
- far
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/005—Combined cooling and heating devices
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は冷凍食品を解凍する解凍室付冷蔵庫に関する
ものである。Description: TECHNICAL FIELD The present invention relates to a refrigerator with a thawing compartment for thawing frozen food.
従来の技術 従来より冷凍食品の解凍に対して加熱ヒータを用いる
例が知られている。例えば、特公昭48-25414号公報に示
される例がそれであり、以下第６図，第７図に従い説明
する。2. Description of the Related Art Conventionally, an example in which a heater is used for thawing frozen food is known. An example is disclosed in Japanese Patent Publication No. 48-25414, which will be described below with reference to FIGS. 6 and 7.
１は解凍箱であり、金属又は合成樹脂等で箱状に形成
した外箱２と、前記外箱２の内側に適当な間隙を配して
設けた熱伝導率の良好なアルミ等の金属製の内箱３で構
成されている。４は線状の加熱ヒータであり、前記解凍
箱１の底面部は疎に上面部は密になるようにしてアルミ
箔５によって前記内箱３に熱伝導的に密接されている。
６は前記外箱２、アルミ箔５間に介在させた断熱材であ
る。Reference numeral 1 denotes a thawing box, which is an outer box 2 formed in a box shape from metal or synthetic resin, and a metal such as aluminum having good thermal conductivity provided with an appropriate gap inside the outer box 2. Is composed of an inner box 3. Reference numeral 4 denotes a linear heater, which is thermally conductively connected to the inner box 3 by aluminum foil 5 so that the bottom surface of the thawing box 1 is sparse and the upper surface is dense.
Reference numeral 6 denotes a heat insulating material interposed between the outer box 2 and the aluminum foil 5.
かかる構成において、解凍箱１の底面に被解凍食品７
を載置して解凍作用を開始すると、加熱ヒータ４の加熱
によって内箱３の全周より熱が加えられ、ほぼ均一に被
解凍食品７を加熱し、解凍を行なわせることが特徴とな
っている。In such a configuration, the food 7 to be thawed is placed on the bottom of the thaw box 1.
When the thawing action is started by placing the garbage, the heat is applied from the entire circumference of the inner box 3 by the heating of the heater 4, and the thawing target food 7 is heated almost uniformly, and the thawing is performed. I have.
発明が解決しようとする課題 しかし、この様な構成では解凍箱１の底面部からは、
熱伝導により被解食品７の底面部に熱が伝わり底面部の
解凍は可能であるものの、解凍箱１の上面及び側面部か
らの被解凍食品７への放射熱の効果は、加熱ヒータ４か
ら内箱３を介しての熱線波長が５μｍ以下の近赤外線域
であるためほとんどなく、解凍箱１内の暖められた空気
の対流による伝熱によってのみ加熱が行なわれる。この
ため、被解凍食品７の中心部と表面部との解凍むらが大
きくなり易く又、解凍時間も長くかかるという問題点
や、解凍終了後そのまま食品を放置しておくと、特に魚
肉等の生ものでは雰囲気温度が高いことによる変質が生
じるため、解凍終了を使用者が監視して処理する必要が
あり、安心して使用出来ないという問題点があった。However, in such a configuration, from the bottom of the thawing box 1,
Although heat is transmitted to the bottom of the food 7 to be thawed by heat conduction and the bottom can be thawed, the effect of radiant heat from the top and side surfaces of the thawing box 1 to the food 7 to be thawed is from the heater 4 Since the heat ray wavelength through the inner box 3 is in the near infrared region of 5 μm or less, there is almost no heating, and heating is performed only by heat transfer by convection of the heated air in the thawing box 1. For this reason, uneven thawing between the central part and the surface part of the food 7 to be thawed is likely to be large, and the thawing time is long. In such a case, since the deterioration occurs due to a high ambient temperature, it is necessary for the user to monitor and process the end of the thawing, and there is a problem that the thawing cannot be performed with security.
本発明は上述した問題点を解消するものであり、解凍
むらが少なく、短時間で解凍可能な解凍室を特に冷蔵庫
内に付与することを目的としている。An object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a thawing chamber which can reduce thawing unevenness and can be thawed in a short time, especially in a refrigerator.
課題を解決するための手段 上記課題を解決するために本発明の解凍室付冷蔵庫
は、冷凍室と、冷蔵室と、外周を断熱材で囲まれて前面
開口部に開閉自在の扉を設けた解凍室と、冷凍サイクル
の圧縮機，冷却器と、前記冷却器により冷却された空気
を前記冷凍室，冷蔵室，解凍室に強制通風させる送風機
と、前記解凍室の上部に設けた遠赤外線ヒータと、金属
製の底面板の裏面に熱伝導的に密着させた加熱ヒータ
と、前記底面板の裏面の略中央に熱伝導的に密着させた
温度検知器と、前記遠赤外線ヒータの上面をドーム状に
覆う金属製の反射板と、被解凍食品を載置して前記底面
板状に熱伝導的、且つ着脱自在に設置される解凍皿と、
前記解凍室の吐出口に連通して電気的入力で冷気流入量
を調節するダンパーサーモと、前記ダンパーサーモより
連通し、前記反射板の裏面上部空間に形成した通風路
と、前記反射板に設けて前記通風路と解凍室内を連通さ
す多数の通風孔と、解凍中は前記ダンパーサーモを強制
開放させ、前記送風機を強制運転させるとともに、解凍
開始から前記温度検知器の温度が所定温度に上昇するま
で時間は前記遠赤外線ヒータ及び前記加熱ヒータを連続
通電させ、以後は前記両ヒータへの通電を断続的に行わ
せて時間経過により段階的に断続通電率を低下させ、且
つ非解凍時は解凍室を冷蔵温度と冷凍温度の間の第３の
温度帯に維持させる解凍制御装置を設けるものである。Means for Solving the Problems In order to solve the above problems, a refrigerator with a thawing compartment of the present invention is provided with a freezer compartment, a refrigerator compartment, and a door that is openable and closable at a front opening surrounded by a heat insulating material. A thawing chamber, a compressor and a cooler of a refrigeration cycle, a blower for forcibly ventilating the air cooled by the cooler to the freezing chamber, the refrigeration chamber and the thawing chamber, and a far-infrared heater provided at an upper part of the thawing chamber A heater that is thermally conductively attached to the back surface of the bottom plate made of metal; a temperature detector that is thermally conductively attached to substantially the center of the back surface of the bottom plate; A metal reflecting plate that covers in a shape, a defrosting dish that is placed on the bottom plate and heat-conductive, and that is detachably mounted, on which the food to be thawed is placed;
A damper thermostat that communicates with the discharge port of the thawing chamber and controls the amount of cold air inflow by electrical input; a ventilation passage that communicates with the damper thermostat and is formed in the upper space on the back surface of the reflector; and provided on the reflector. And a large number of ventilation holes communicating the ventilation path and the defrosting chamber, and forcibly opening the damper thermostat during defrosting, forcibly operating the blower, and increasing the temperature of the temperature detector to a predetermined temperature from the start of defrosting. Until the time, the far-infrared heater and the heating heater are continuously energized, and thereafter, the energization of both heaters is intermittently performed, and the intermittent energization rate is reduced stepwise with the passage of time. A thaw control device is provided for maintaining the room in a third temperature zone between the refrigeration temperature and the freezing temperature.
作用 本発明は上記した構成によって、被解凍食品の上面及
び側面より遠赤外線ヒータによる遠赤外線の直接放射及
び反射板を介しての間接放射が行なわれるとともに底面
の加熱ヒータからの伝熱加熱が行なわれて熱吸収され
る。又、底面の温度検知器が所定温度に上昇するまでは
両ヒータが連続通電されて急激に被解凍食品の温度が上
昇する、その後は両ヒータへの断続通電率が段階的に低
下することと、ダンパーサーモを介して反射板に形成し
た上面の多数の通風孔より被解凍食品に対して均等に冷
気が供給されて食品表面の温度上昇を抑制する。更に解
凍終了後はダンパーサーモの温調作用により食品温度は
自動的に冷蔵温度と冷凍温度の間の第３の温度帯に維持
されて保冷されるものである。Effect of the Invention According to the above-described configuration, the present invention performs direct radiation of far-infrared rays from the top and side surfaces of the food to be thawed by the far-infrared heater and indirect radiation through the reflector plate, and performs heat transfer heating from the bottom heater. Is absorbed. In addition, both heaters are continuously energized until the temperature detector on the bottom surface rises to a predetermined temperature, and the temperature of the food to be thawed rises sharply. Thereafter, the intermittent energization rate to both heaters decreases stepwise. In addition, cold air is uniformly supplied to the food to be thawed from a large number of ventilation holes on the upper surface formed on the reflection plate via the damper thermostat, thereby suppressing a rise in the temperature of the food surface. Further, after the thawing is completed, the food temperature is automatically maintained in the third temperature zone between the refrigeration temperature and the freezing temperature by the temperature control action of the damper thermostat and is kept cool.
実施例 以下本発明の一実施例の解凍室付冷蔵庫について第１
図から第６図に従い説明する。EXAMPLE A first example of a refrigerator with a thawing room according to one example of the present invention will be described.
A description will be given with reference to FIGS.
８は冷蔵庫本体で外箱9,内箱10及びこれら両箱9,10間
に充填された断熱材11により構成されている。12は冷蔵
庫本体８内を上下に区画する区画壁であり、前記区画壁
12の上部に冷凍室13、下部に冷蔵室14が区画形成されて
いる。15は前記冷蔵室14内の上部の一区画に設けた解凍
室である。16は前記冷蔵庫本体８の底部後方に設けた冷
凍サイクルの圧縮機、17は前記冷凍室13の背面に収めた
冷却器である。18は前記冷却器17で冷却された冷気を前
記冷凍室13、冷蔵室14、解凍室15内に強制通風させるた
めの送風機、19,20は前記冷蔵室14,解凍室15の吐出口51
に設けて電気的入力で冷気流入量を調節するダンパーサ
ーモであり、その構成を解凍室15用のダンパーサーモ20
を例にとって説明すると、21は電磁コイル、22は前記電
磁コイル21の内心部を電磁作用の有無によって上下する
プランジャー、23は前記プランジャー22に接合されたロ
ッド、24は冷気通路を開閉するダンパーであり、前記電
磁コイル21への通電時に電磁作用で前記ロッド23が押し
上げられて前記ダンパー24が開放され、通電が断たれる
と前記ロッド23は下方に落下して前記ダンパー24が閉成
する様に構成されている。尚、図示しないが後の説明の
便宜上、同一構成の冷蔵室用のダンパーサーモ19の電磁
コイル21′，ダンパーを24′とする。Reference numeral 8 denotes a refrigerator body which is composed of an outer box 9, an inner box 10, and a heat insulating material 11 filled between the two boxes 9, 10. Reference numeral 12 denotes a partition wall for vertically partitioning the inside of the refrigerator body 8,
A freezer compartment 13 is formed in an upper part of the refrigerator 12 and a refrigerator compartment 14 is formed in a lower part thereof. Reference numeral 15 denotes a thawing chamber provided in an upper section of the refrigerator compartment 14. Reference numeral 16 denotes a compressor of a refrigeration cycle provided at the rear of the bottom of the refrigerator body 8, and reference numeral 17 denotes a cooler housed in the back of the freezing compartment 13. Reference numeral 18 denotes a blower for forcibly ventilating the cool air cooled by the cooler 17 into the freezing room 13, the refrigeration room 14, and the thawing room 15, and 19 and 20 denote outlets 51 of the refrigeration room 14, the thawing room 15.
This is a damper thermo that is provided in the thawing chamber and controls the amount of cold air inflow by an electrical input.
For example, 21 is an electromagnetic coil, 22 is a plunger that moves up and down the inner core of the electromagnetic coil 21 depending on the presence or absence of an electromagnetic action, 23 is a rod joined to the plunger 22, and 24 opens and closes a cool air passage. When the power is supplied to the electromagnetic coil 21, the rod 23 is pushed up by electromagnetic action to open the damper 24, and when the power is cut off, the rod 23 falls downward and the damper 24 is closed. It is configured to do so. Although not shown, the electromagnetic coil 21 'and the damper of the damper thermometer 19 for the refrigerator having the same configuration are referred to as 24' for the sake of convenience of the following description.
25,26は前記送風機18からの冷気を前記冷蔵室14,解凍
室15に導く吐出ダクト、27,28は夫々前記冷蔵室14,解凍
室15内を冷却した冷気を前記冷却器17に戻すための吸込
ダクトである。又、29,30,31は夫々前記冷凍室13、冷蔵
室14、解凍室15内の温度を検知する温度検知器である。25 and 26 are discharge ducts for guiding the cool air from the blower 18 to the refrigerator compartment 14 and the thawing chamber 15, and 27 and 28 are for returning the cool air that has cooled the refrigerator compartment 14 and the thawing chamber 15 to the cooler 17, respectively. Is a suction duct. Reference numerals 29, 30, and 31 denote temperature detectors for detecting the temperatures in the freezing compartment 13, the refrigerating compartment 14, and the thawing compartment 15, respectively.
次に前記解凍室15の詳細構成について説明する。 Next, a detailed configuration of the thawing chamber 15 will be described.
32は合成樹脂製の外箱、33は前記外箱32の内面に設置
して外周を囲む断熱材である。34は前記解凍室15内の上
部に設けた遠赤外線ヒータであり、ヒータ線35を封入し
たガラス管36の表面に硅素等を主成分とするセラミック
塗料層37を焼付け塗装し約５μｍ以上の遠赤外線を有効
に放射する様構成されている。この遠赤外線ヒータ34は
耐熱性の高い合成樹脂製のホルダー38を介してドーム状
に形成したアルミニウム等の金属製の反射板39より垂下
支持されている。また前記反射板39は解凍室15内の両側
壁，奥壁を構成する内箱部分も一体に形成したものとし
ており、更に天面ドーム部両側の平面部には多数の通風
孔40を形成している。次に、41はアルミニウム等金属製
の底面板であり、42は前記底面板41の裏面にアルミ箔等
で熱伝導的に固定された線状の加熱ヒータであり、43は
前記底面板41の裏面中央部付近に熱伝導的に密着させた
温度検知器である。44は前記底面板41上に着脱自在に設
置される解凍皿であり、被解凍食品45を載置するアルミ
ニウム等金属製の皿46と外周を囲む合成樹脂製の枠体47
により構成されている。48は前記反射板39の下方に一定
の間隔をおいて固定設置した火傷防止用の防護網であ
り、49は解凍室15の前面開口部を開閉する扉である。ま
た、50は前記反射板39の裏面空間に形成した通風路であ
り、吐出口51を介して前記ダンパーサーモ20に連通して
いる。52は解凍室15内の奥壁に形成した吸込口であり前
記吸込ダクト28に連通している。53は前記冷蔵庫本体８
の外殻前面に設けた解凍スイッチである。Reference numeral 32 denotes an outer box made of a synthetic resin, and reference numeral 33 denotes a heat insulating material provided on the inner surface of the outer box 32 and surrounding the outer periphery. Numeral 34 denotes a far-infrared heater provided in the upper part of the thawing chamber 15. The surface of a glass tube 36 enclosing the heater wire 35 is baked and coated with a ceramic paint layer 37 containing silicon or the like as a main component, and a far-infrared heater of about 5 μm or more is applied. It is configured to emit infrared rays effectively. The far-infrared heater 34 is supported by a dome-shaped reflection plate 39 made of metal such as aluminum via a holder 38 made of synthetic resin having high heat resistance. The reflection plate 39 is also formed by integrally forming both side walls in the thawing chamber 15 and an inner box portion forming the back wall, and furthermore, a large number of ventilation holes 40 are formed in a flat portion on both sides of the top dome portion. ing. Next, 41 is a bottom plate made of metal such as aluminum, 42 is a linear heater that is thermally conductively fixed to the back surface of the bottom plate 41 with aluminum foil or the like, and 43 is a bottom heater of the bottom plate 41. This is a temperature detector that is in close contact with the center of the back surface in a thermally conductive manner. Reference numeral 44 denotes a thawing plate which is detachably mounted on the bottom plate 41, and a metal plate 46 made of metal such as aluminum on which a food 45 to be thawed is placed and a frame 47 made of a synthetic resin surrounding the outer periphery.
It consists of. Reference numeral 48 denotes a protective net for preventing burns, which is fixed and installed at a predetermined interval below the reflection plate 39. Reference numeral 49 denotes a door for opening and closing the front opening of the thawing chamber 15. Reference numeral 50 denotes a ventilation path formed in a space on the back surface of the reflection plate 39, and communicates with the damper thermo 20 via a discharge port 51. Reference numeral 52 denotes a suction port formed in the inner wall of the thawing chamber 15 and communicates with the suction duct 28. 53 is the refrigerator body 8
This is the decompression switch provided on the front of the outer shell.
次に電気回路及び制御回路について説明する。 Next, an electric circuit and a control circuit will be described.
圧縮機16はリレー接点54を介して、送風機18はリレー
接点55を介して夫々電源に接続されている。遠赤外線ヒ
ータ34はリレー接点56を介して、加熱ヒータ42はリレー
接点57を介して夫々電源に接続されている。又、解凍室
用のダンパーサーモの電磁コイル21,冷蔵室用のダンパ
ーサーモの電磁コイル21′は夫々リレー接点5859を介し
て電源に接続されている。The compressor 16 is connected to a power supply via a relay contact 54, and the blower 18 is connected to a power supply via a relay contact 55. The far-infrared heater 34 is connected to a power supply via a relay contact 56, and the heater 42 is connected to a power supply via a relay contact 57. The electromagnetic coil 21 of the damper thermometer for the thawing room and the electromagnetic coil 21 'of the damper thermometer for the refrigeration room are connected to the power supply via relay contacts 5859, respectively.
60は冷凍室温度制御装置で、サーミスタ等の温度検知
器29,抵抗R1,R2,R3、コンパレータ61を備えた比較回
路、トランジスタ62,リレーコイル63を備えており、前
記コンパレータ61の出力は前記トランジスタ62のベース
に接続されている。又、トランジスタ62のコレクタには
前記リレー接点54を開閉させる吸引用の前記リレーコイ
ル63が接続されている。64は冷蔵室温度制御装置で、サ
ーミスタ等の温度検知器30,抵抗R4,R5,R6、コンパレー
タ65を備えた比較回路、トランジスタ66,リレーコイル6
7を備えており、前記コンパレータ65の出力は前記トラ
ンジスタ66のベースに接続されている。又、トランジス
タ66のコレクタには前記リレー接点59を開閉させる吸引
用の前記リレーコイル67が接続されている。68は解凍室
温度制御装置で、サーミスタ等の温度検知器31、抵抗
R7,R8,R9、コンパレータ69を備えた比較回路、OR回路7
0、トランジスタ71、リレーコイル72を備えており、通
常冷却時は前記解凍室15の室内が約−３℃のパーシャル
フリージング温度に温調されるよう抵抗構成されてい
る。前記コンパレータ69の出力は前記OR回路70の一方の
入力に接続されている。またOR回路70の出力は前記トラ
ンジスタ71のベースに接続され、前記トランジスタ71の
コレクタには前記リレー接点58を開閉させる吸引用の前
記リレーコイル72が接続されている。Reference numeral 60 denotes a freezer compartment temperature control device, which includes a temperature detector 29 such as a thermistor, resistors R 1 , R 2 , R 3 , a comparison circuit including a comparator 61, a transistor 62, and a relay coil 63. The output is connected to the base of the transistor 62. The collector coil of the transistor 62 is connected to the attraction relay coil 63 for opening and closing the relay contact 54. Reference numeral 64 denotes a refrigerator temperature control device, which includes a temperature detector 30 such as a thermistor, resistors R 4 , R 5 , and R 6 , a comparison circuit including a comparator 65, a transistor 66, and a relay coil 6.
The output of the comparator 65 is connected to the base of the transistor 66. The collector of the transistor 66 is connected to the attraction relay coil 67 for opening and closing the relay contact 59. Reference numeral 68 denotes a thawing room temperature controller, which includes a temperature detector 31 such as a thermistor and a resistance.
R 7, R 8, R 9 , comparing circuit, OR circuit 7 which includes a comparator 69
0, a transistor 71, and a relay coil 72, and are configured to have a resistance such that the temperature of the interior of the thawing chamber 15 is controlled to a partial freezing temperature of about −3 ° C. during normal cooling. The output of the comparator 69 is connected to one input of the OR circuit 70. The output of the OR circuit 70 is connected to the base of the transistor 71, and the collector of the transistor 71 is connected to the attraction relay coil 72 for opening and closing the relay contact 58.
73は解凍制御装置で、前記解凍室15の底面板41に密着
させた温度検知器43、抵抗R10,R11,R12、コンパレータ7
4を備えた比較回路とタイマー75,76,77,AND回路78,79,O
R回路80,81,82、前記OR回路70、インバータ83、トラン
ジスタ84,85,86、リレーコイル87,88,89及び前記解凍ス
イッチ53を備えている。Reference numeral 73 denotes a thawing control device, which is a temperature detector 43 closely attached to the bottom plate 41 of the thawing chamber 15, resistors R 10 , R 11 , R 12 , and a comparator 7.
Comparison circuit with 4 and timer 75, 76, 77, AND circuit 78, 79, O
The circuit includes R circuits 80, 81, 82, the OR circuit 70, an inverter 83, transistors 84, 85, 86, relay coils 87, 88, 89, and the decompression switch 53.
そして、前記解凍スイッチ53の出力は前記タイマー75
の入力に接続されており、前記タイマー75の出力は前記
AND回路78,79、OR回路70,82の夫々一方の入力に接続さ
れている。前記コンパレータ74の出力は前記インバータ
83を介して前記AND回路78のもう一方の入力に接続され
ると同時に前記AND回路79のもう一方の入力に接続され
ている。前記AND回路78の出力はOR回路80,81の一方に接
続されており、前記AND回路79の出力は前記タイマー76,
77の入力に接続されている。そして前記タイマー76,77
の出力は前記OR回路80,81の夫々のもう一方の入力に接
続されており、OR回路80,81の出力は夫々前記トランジ
スタ84,85のベースに接続されている。前記トランジス
タ84,85のコレクタには前記リレー接点56,57を開閉させ
る吸引用の前記リレーコイル87,88が接続されている。
また、前記OR回路82のもう一方の入力には前記冷凍室温
度制御装置60のコンパレータ61の出力が接続されてお
り、前記OR回路82の出力は前記トランジスタ86のベース
に接続されている。そして前記トランジスタ86のコレク
タには前記リレー接点55を開閉させる吸引用の前記リレ
ーコイル89が接続されている。The output of the thawing switch 53 is
The output of the timer 75 is
It is connected to one input of each of AND circuits 78 and 79 and OR circuits 70 and 82. The output of the comparator 74 is
It is connected to the other input of the AND circuit 78 via 83 and at the same time to the other input of the AND circuit 79. The output of the AND circuit 78 is connected to one of the OR circuits 80, 81, and the output of the AND circuit 79 is connected to the timer 76,
Connected to 77 inputs. And the timers 76 and 77
Are connected to the other inputs of the OR circuits 80 and 81, respectively, and the outputs of the OR circuits 80 and 81 are connected to the bases of the transistors 84 and 85, respectively. The collector coils of the transistors 84 and 85 are connected to the attraction relay coils 87 and 88 for opening and closing the relay contacts 56 and 57.
The other input of the OR circuit 82 is connected to the output of the comparator 61 of the freezing room temperature control device 60, and the output of the OR circuit 82 is connected to the base of the transistor 86. The collector of the transistor 86 is connected to the attraction relay coil 89 for opening and closing the relay contact 55.
尚ここで、前記タイマー75は入力に一且““High"
（以後単に“H"と呼ぶ）の信号が入ると所定時間ｔの間
“H"信号を出力しつづけ、その後“Low"（以後単に“L"
と呼ぶ）の信号に切換わるよう構成されている。また前
記タイマー76,77は入力に“H"信号が入力されている間
は“H",“L"の信号を所定時間づつ交互に出力するが、
所定の時間経過で“H"信号の断続出力率が段階的に低下
するよう構成されている。例えば具体的には、前記タイ
マー76の出力は、最初の時間t1は“H"信号の出力率が80
％、次の時間t2では“H"信号の出力率が40％になるよう
構成され、前記タイマー77の出力は最初の時間t1′は
“H"信号の出力率が80％、次の時間t2′では“H"信号の
出力率が０％になるよう構成されている。尚、前記タイ
マー76,77の動作時間はt1＋t2＝t1′＋t2′となるよう
構成され、前記タイマー75の所定時間ｔは解凍作用のタ
イムセーフ的な役割をさせることも含めて、前記タイマ
ー76,77の動作時間t1＋t2＝t1′＋t2′より十分長くな
るよう設定されている。In this case, the timer 75 receives the signal "High"
(Hereinafter simply referred to as “H”), the “H” signal continues to be output for a predetermined time t, and then “Low” (hereinafter simply “L”).
). The timers 76 and 77 alternately output “H” and “L” signals at predetermined time intervals while the “H” signal is being input.
The configuration is such that the intermittent output rate of the “H” signal decreases stepwise after a predetermined time has elapsed. For example, specifically, the output of the timer 76, the first time t 1 is output rate of "H" signal 80
%, Is configured to output rate for the next time in t 2 "H" signal is 40%, the output the first time t 1 'is "H" signal at the output rate of the timer 77 is 80%, the following At time t 2 ′, the output rate of the “H” signal is configured to be 0%. The operation time of the timers 76 and 77 is configured to be t 1 + t 2 = t 1 ′ + t 2 ′. The predetermined time t of the timer 75 includes a time-safe function of the decompression operation. The operation time of the timers 76 and 77 is set to be sufficiently longer than t 1 + t 2 = t 1 ′ + t 2 ′.
かかる構成において、冷凍室13の温度が所定値より高
い場合は、温度検知器29の抵抗値が小さくなっておりコ
ンパレータ61の出力が“H"となるためトランジスタ62が
ONしてリレーコイル63が導通する。このためリレー接点
54が閉成して圧縮機16が運転される。又、これと同時に
OR回路82の出力も“H"となっているためトランジスタ86
がONしてリレーコイル89が導通する。このため、リレー
接点55が閉成して送風機18も運転され冷凍室13、冷蔵室
14、解凍室15へ冷気を強制通風して冷却を行なう。その
後、冷凍室13が所定温度にまで冷却されれば温度検知器
29の抵抗値が大きくなりコンパレータ６の出力が“L"と
なる。このため、トランジスタ62はOFFし、又OR回路82
の出力も“L"となるためトランジスタ86もOFFしてリレ
ーコイル63,89への通電が断たれる。このためリレー接
点54,55はいづれも開放し圧縮機16,送風機18が停止す
る。以後この作用を繰り返して冷凍室13内は所定温度
（例えば−20℃）に温調維持される。In such a configuration, when the temperature of the freezing compartment 13 is higher than a predetermined value, the resistance value of the temperature detector 29 becomes small and the output of the comparator 61 becomes “H”, so that the transistor 62 is turned on.
Turns on and relay coil 63 conducts. For this reason relay contacts
54 is closed and the compressor 16 is operated. Also at the same time
Since the output of the OR circuit 82 is also “H”, the transistor 86
Turns ON and the relay coil 89 conducts. For this reason, the relay contact 55 is closed, the blower 18 is also operated, and the freezing room 13 and the refrigeration room
14. Cooling is performed by forcing cool air into the thawing chamber 15. After that, if the freezing compartment 13 is cooled to a predetermined temperature, the temperature detector
The resistance value of the resistor 29 increases, and the output of the comparator 6 becomes “L”. Therefore, the transistor 62 is turned off, and the OR circuit 82
Is also "L", the transistor 86 is also turned off, and the power supply to the relay coils 63 and 89 is cut off. Therefore, the relay contacts 54 and 55 are both opened, and the compressor 16 and the blower 18 are stopped. Thereafter, this operation is repeated, and the inside of the freezing compartment 13 is maintained at a predetermined temperature (for example, −20 ° C.).
次に冷蔵室14の温度が所定値より高い場合は、温度検
知器30の抵抗値が小さくなっており、コンパレータ65の
出力が“H"となるためトランジスタ66がONしてリレーコ
イル67が導通する。このため、リレー接点59が閉成して
電磁コイル21′に通電されてダンパーサーモ19のダンパ
ー24′が開放されて冷蔵室14内へ冷気が導入され冷却作
用を行なう。その後、冷蔵室14が所定温度にまで冷却さ
れれば温度検知器30の抵抗値が大きくなってコンパレー
タ65の出力が“L"となる。このため、トランジスタ66は
OFFしてリレーコイル67への通電が断たれてリレー接点5
9が開放し電磁コイル21′への通電も断たれる。そして
ダンパーサーモ19のダンパー24′が閉成されて冷蔵室14
内への冷気の流入が阻止される。以後、この作用を繰り
返して冷蔵室14内は所定温度（例えば５℃）に温調維持
される。Next, when the temperature of the refrigerator compartment 14 is higher than a predetermined value, the resistance value of the temperature detector 30 becomes small, and the output of the comparator 65 becomes “H”, so that the transistor 66 is turned on and the relay coil 67 is turned on. I do. Therefore, the relay contact 59 is closed, the electromagnetic coil 21 'is energized, the damper 24' of the damper thermo 19 is opened, and cool air is introduced into the refrigerator compartment 14 to perform a cooling action. Thereafter, when the refrigerator compartment 14 is cooled to a predetermined temperature, the resistance value of the temperature detector 30 increases, and the output of the comparator 65 becomes “L”. Therefore, transistor 66
Turns OFF and cuts off current to relay coil 67, causing relay contact 5
9 is opened and the power supply to the electromagnetic coil 21 'is also cut off. Then, the damper 24 'of the damper thermo 19 is closed and the refrigerator compartment 14 is closed.
Cooling air is prevented from flowing into the inside. Thereafter, this operation is repeated to maintain the temperature inside the refrigerator compartment 14 at a predetermined temperature (for example, 5 ° C.).
また、非解凍時において解凍室15の温度が所定値より
高い場合は、温度検知器31の抵抗値が小さくなってお
り、コンパレータ69の出力が“H"となるためOR回路70の
出力が“H"となりトランジスタ71がONしてリレーコイル
72が導通する。このため、リレー接点58が閉成して電磁
コイル21に通電されてダンパーサーモ20のダンパー24が
開放されて解凍室15内へ冷気が導入され冷却作用を行な
う。その後、解凍室15が所定温度にまで冷却されれば温
度検知器31の抵抗値が大きくなってコンパレータ69の出
力が“L"となる。このため、OR回路70の出力が“L"とな
ってトランジスタ71はOFFしてリレーコイル72への通電
が断たれてリレー接点58が開放し、電磁コイル21への通
電も断たれる。そしてダンパーサーモ20のダンパー24が
閉成されて解凍室15内への冷気流入が阻止される。以
後、この作用を繰り返して解凍室15内は前述の様に生鮮
食品の保存に適した冷凍温度と冷蔵温度の間の第３の温
度帯、即ち約−３℃のパーシャルフリージング温度帯に
温調維持される。When the temperature of the thawing chamber 15 is higher than a predetermined value at the time of non-thawing, the resistance value of the temperature detector 31 is small and the output of the comparator 69 becomes “H”, so that the output of the OR circuit 70 becomes “H”. "H" and transistor 71 turns on and relay coil
72 conducts. Therefore, the relay contact 58 is closed, the electromagnetic coil 21 is energized, the damper 24 of the damper thermo 20 is opened, and cool air is introduced into the thawing chamber 15 to perform a cooling action. Thereafter, when the thawing chamber 15 is cooled to a predetermined temperature, the resistance value of the temperature detector 31 increases, and the output of the comparator 69 becomes “L”. As a result, the output of the OR circuit 70 becomes “L”, the transistor 71 is turned off, the power supply to the relay coil 72 is cut off, the relay contact 58 is opened, and the power supply to the electromagnetic coil 21 is also cut off. Then, the damper 24 of the damper thermo 20 is closed, and the inflow of cold air into the thawing chamber 15 is prevented. Thereafter, this operation is repeated, and the temperature inside the thawing chamber 15 is controlled to the third temperature zone between the freezing temperature and the refrigeration temperature suitable for preserving fresh food as described above, that is, the partial freezing temperature zone of about -3 ° C. Will be maintained.
次に解凍時の作用について述べる。先ず、解凍しよう
とする被解凍食品45を解凍トレイ44上に載置して解凍室
15内の底面板41上に設置した上で解凍スイッチ53を投入
する。投入と同時にタイマー75が“H"信号の出力を開始
し、AND回路78,79の一方の入力が“H"となる。この時、
解凍室15の底面板41は冷凍状態の温度の低い（例えば−
20℃）被解凍食品45を載置した解凍皿44との熱伝導で温
度が低下している。即ち、温度検知器43は十分温度の低
い状態にある。このためコンパレータ74の出力は“L"と
なっており、インバータ83で“H"に反転された信号がAN
D回路78のもう一方の入力される。一方、AND回路79には
インバータ83を介さない“L"の信号がそのまま入力され
る。このためAND回路78の出力は“H",AND回路79の出力
は“L"となるため、タイマー76、77は動作せず、OR回路
80,81の出力が“H"となってトランジスタ84,85がONす
る。そしてリレーコイル87,88に通電され、リレー接点5
0,57が開成して遠赤外線ヒータ34、加熱ヒータ42に連続
通電される。そして、解凍作用が進行して温度検知器43
が予め定めた所定温度（例えば30℃）にまで上昇すると
（これに要する時間をt0とする）コンパレータ74の出力
が“H"となり、インバータ83を介して“L"の信号がAND
回路78に入力されてAND回路78の出力が“L"となる。一
方、AND回路79には“H"の信号が入力されるためAND回路
76,77が所定の断続率により“H",“L"の信号を交互に繰
り返して出力する。このため、それに応じた断続出力率
でOR回路80,81を介してトランジスタ84,85がON/OFFす
る。そして、リレーコイル87,88への通電が断続されて
リレー接点56,57が断続的に開閉する。その結果、遠赤
外線ヒータ34は前記連続通電の時間t0に続く時間t1は通
電率80％、次の時間t2は通電率40％と時間経過とともに
段階的に発熱容量が低下していくように制御される。ま
た加熱ヒータ42は前記連続通電の時間t0に続く時間t1′
は通電率80％、次の時間t2′は通電率０％と発熱容量が
低下していくように制御される。このように、被解凍食
品45の温度が低い解凍初期は温度検知器43の温度が所定
温度に上昇するまで遠赤外線ヒータ34、加熱ヒータ42の
両ヒータが連続通電されるため、被解凍食品45の重量が
様々に変化しても、温度検知器43の温度上昇の度合で、
夫々の重量に適した時間だけ過不足なく発熱量の大きい
条件下で急速に解凍が進められることになり解凍時間の
短縮化が図れる。そして、その後は時間経過とともに発
熱容量が段階的に低下し、被解凍食品45の表面温度の上
昇を抑制しながらの解凍が進行する。解凍中は被解凍食
品45に対して、上面からは遠赤外線ヒータ34からの放射
加熱が反射板39の反射作用とも相まって均等に行なわ
れ、底面からは加熱ヒータ42による伝熱加熱が同時に行
なわれることになる。ここで、遠赤外線ヒータ34の加熱
においては５μｍ以上の長波長の遠赤外線が被解凍食品
45に対して放射されるため、遠赤外線波長域に吸収波長
帯を持つ一般的な食品類では効率よく遠赤外線が吸収さ
れ、被解凍食品45の比較的内部にまで浸透して表面部と
中心部との温度むらが比較的大きくならない状態で解凍
が進行する。又、加熱ヒータ42による加熱においては、
遠赤外線ヒータ34で十分に加熱しきれない被解凍食品45
の底面部を解凍皿44を介しての伝熱加熱で解凍すること
ができる。Next, the operation at the time of thawing will be described. First, place the food 45 to be thawed on the thawing tray 44 and place it in the thawing room.
After setting on the bottom plate 41 in 15, the thaw switch 53 is turned on. At the same time as the input, the timer 75 starts outputting the “H” signal, and one of the inputs of the AND circuits 78 and 79 becomes “H”. At this time,
The bottom plate 41 of the thawing chamber 15 has a low temperature in a frozen state (for example,-
(20 ° C.) The temperature has dropped due to heat conduction with the thawing dish 44 on which the food 45 to be thawed is placed. That is, the temperature detector 43 is in a state where the temperature is sufficiently low. Therefore, the output of the comparator 74 is “L”, and the signal inverted to “H” by the inverter 83 is
The other input of the D circuit 78 is input. On the other hand, an “L” signal that does not pass through the inverter 83 is directly input to the AND circuit 79. As a result, the output of the AND circuit 78 becomes “H” and the output of the AND circuit 79 becomes “L”, so that the timers 76 and 77 do not operate and the OR circuit
The outputs of 80 and 81 become "H", and the transistors 84 and 85 are turned on. The relay coils 87 and 88 are energized, and the relay contacts 5
0, 57 is opened, and the far infrared heater 34 and the heater 42 are continuously energized. Then, the thawing action proceeds and the temperature detector 43
Rises to a predetermined temperature (for example, 30 ° C.) (the time required for this is assumed to be t 0 ), the output of the comparator 74 becomes “H”, and the “L” signal is ANDed via the inverter 83.
The signal is input to the circuit 78 and the output of the AND circuit 78 becomes “L”. On the other hand, since an “H” signal is input to the AND circuit 79, the AND circuit 79
76 and 77 alternately and repeatedly output "H" and "L" signals at a predetermined interruption rate. For this reason, the transistors 84 and 85 are turned ON / OFF via the OR circuits 80 and 81 at the intermittent output rate corresponding thereto. The energization of the relay coils 87 and 88 is interrupted, and the relay contacts 56 and 57 open and close intermittently. As a result, far-infrared heater 34 is time t 1 following the time t 0 of the continuous energization duty ratio of 80%, the next time t 2 stepwise heating capacity with the passage of 40% duty ratio and time is lowered Is controlled as follows. The heater 42 is operated for a time t 1 ′ following the continuous energization time t 0.
Is controlled so as to reduce the heat generation capacity to 80% for the next time t 2 ′ and 0% for the next time t 2 ′. As described above, in the initial stage of thawing when the temperature of the food 45 to be defrosted is low, the far-infrared heater 34 and the heater 42 are continuously energized until the temperature of the temperature detector 43 rises to a predetermined temperature. Even if the weight changes variously, depending on the degree of temperature rise of the temperature detector 43,
Thawing can proceed rapidly under conditions of a large amount of heat generation without any excess or shortness for a time suitable for each weight, and the thawing time can be shortened. Then, after that, the heat generation capacity gradually decreases as time passes, and thawing proceeds while suppressing an increase in the surface temperature of the food 45 to be thawed. During the thawing, the radiant heating from the far-infrared heater 34 is performed evenly from the top surface of the food 45 to be defrosted in combination with the reflection action of the reflection plate 39, and the heat transfer heating by the heater 42 is simultaneously performed from the bottom surface. Will be. Here, in the heating of the far-infrared heater 34, far-infrared rays having a longer wavelength of 5 μm or more
Because it is radiated to 45, far-infrared rays are efficiently absorbed by general foods that have an absorption wavelength band in the far-infrared wavelength range, penetrate relatively deep into the food 45 to be thawed, and reach the surface and center. Thawing proceeds in a state where the temperature unevenness between the parts does not become relatively large. In the heating by the heater 42,
Defrosted food 45 that cannot be heated sufficiently by the far infrared heater 34
Can be thawed by heat transfer heating through the thawing dish 44.
一方、これら遠赤外線ヒータ34,加熱ヒータ42による
加熱作用と同時に、解凍中即ちタイマー75の出力が“H"
信号を発生し続ける間はOR回路70,82の出力も“H"とな
り、トランジスタ71,89がONし、リレーコイル72,89が導
通する。このため、リレー接点58,55が閉成して解凍室
温度制御装置68の出力の如何にかかわらず電磁コイル21
に通電され、解凍室用のダンパーサーモ20のダンパー24
が強制的に開放され、解凍室温度制御装置60の出力の如
何に関わらず送風機18が強制的に運転される。こうして
開放されたダンパー24を介して送風機18で強制通風され
た冷気が吐出ダクト26を介して吐出口51より解凍室15内
上部の通風路50内に流入する。通風路50内に流入した冷
気は反射板39に形成した多数の通風孔より下方へ吐出さ
れ、被解凍食品45の表面を均等に冷却する。この作用に
よって、被解凍食品45は主として遠赤外線ヒータ34の遠
赤外線放射効果と、遠赤外線ヒータ34及び加熱ヒータ42
の発熱容量を段階的に低下させる制御の効果に加えて更
に表面部の温度上昇が抑制されることになり、結果とし
て中心部と表面部との温度差の小さい解凍むらの少ない
解凍が実現できる（解凍中の被解凍食品45の温度特性及
びタイムチャートを第６図に示す）。On the other hand, at the same time as the heating action by the far infrared heater 34 and the heater 42, the thawing is performed, that is, the output of the timer 75 becomes “H”.
While the signal continues to be generated, the outputs of the OR circuits 70 and 82 also become "H", the transistors 71 and 89 are turned on, and the relay coils 72 and 89 are turned on. For this reason, the relay contacts 58 and 55 are closed, and the electromagnetic coil 21 does not matter regardless of the output of the thawing room temperature control device 68.
And the damper for the thawing room Thermo 20 damper 24
Is forcibly opened, and the blower 18 is forcibly operated regardless of the output of the thawing room temperature control device 60. The cool air forcedly blown by the blower 18 through the damper 24 thus opened flows into the ventilation passage 50 in the upper part of the thawing chamber 15 from the discharge port 51 through the discharge duct 26. The cool air that has flowed into the ventilation path 50 is discharged downward from a number of ventilation holes formed in the reflection plate 39, and uniformly cools the surface of the food 45 to be thawed. By this action, the food 45 to be thawed mainly receives the far-infrared radiation effect of the far-infrared heater 34 and the far-infrared heater 34 and the heater 42.
In addition to the control effect of gradually reducing the heat generation capacity, the temperature rise of the surface portion is further suppressed, and as a result, thawing with a small temperature difference between the central portion and the surface portion and less thawing unevenness can be realized. (A temperature characteristic and a time chart of the food 45 to be thawed during thawing are shown in FIG. 6).
また解凍時間についても遠赤外線の内部浸透効果と解
凍初期の連続加熱制御により、比較的短時間の解凍（例
えば重量500g,厚さ25mmのマグロで約30min）が可能とな
るほか、反射板39が通風路50内に露出しているため本来
相当な高温となる反射板39自体や周辺部材の温度が冷却
されて低下し安全上も好都合となる。尚、解凍室15内に
流入した冷気は冷却作用後、奥面に開口した吸込口52よ
り吸込ダクト28を介して冷却器17の方に回収される。Regarding the thawing time, the effect of the internal penetration of far-infrared rays and the continuous heating control at the beginning of thawing enables thawing in a relatively short time (for example, a tuna with a weight of 500 g and a thickness of 25 mm for about 30 min). The temperature of the reflection plate 39 itself and the peripheral members, which are originally considerably high because they are exposed in the ventilation passage 50, are cooled and lowered, which is advantageous in safety. After cooling, the cool air flowing into the thawing chamber 15 is recovered to the cooler 17 via the suction duct 28 from the suction port 52 opened on the back side after the cooling action.
このような解凍作用が進行して時間t0＋t1＋t2＝t0＋
t1′＋t2′が経過するとタイマー76,77の出力が“L"と
なるとともに、タイマー76よりタイマー75のリセット端
子に入力されてタイマー75の出力も“L"となる。このた
め、トランジスタ84,85が夫々OFFしてリレーコイル87,8
8への通電が断たれてリレー接点56,57が開放し、遠赤外
線ヒータ34、加熱ヒータ42への通電が断たれて解凍が終
了する。またこれと同時にOR回路70,82の一方の入力が
“L"となるため送風機18の強制運転状態及び解凍室用ダ
ンパーサーモ20のダンパー24の強制開放状態が解除され
る。Such a thawing action progresses and the time t 0 + t 1 + t 2 = t 0 +
When t 1 ′ + t 2 ′ elapses, the outputs of the timers 76 and 77 become “L”, and are input from the timer 76 to the reset terminal of the timer 75, so that the output of the timer 75 also becomes “L”. As a result, the transistors 84 and 85 are turned off and the relay coils 87 and 8 are turned off.
When the power supply to 8 is cut off, the relay contacts 56 and 57 are opened, the power supply to the far infrared heater 34 and the heater 42 is cut off, and the thawing is completed. At the same time, one of the inputs of the OR circuits 70 and 82 becomes “L”, so that the forced operation state of the blower 18 and the forced open state of the damper 24 of the defrost chamber damper thermo 20 are released.
そして、解凍終了後は通常冷却時と同様に温度検知器
31の検知温度に基づき、解凍室15内は温度制御される。
このため解凍後の被解凍食品45は約−３℃のパーシャル
フリージング温度帯に安定するよう直ちに冷却されるこ
とになり、余熱で更に温度上昇することがない。そし
て、解凍終了後そのまま放置しておいても魚，肉類等生
ものの保存に適した約−３℃のパーシャルフリージング
温度帯で保冷されているため従来のように使用者が解凍
の終了を監視して即座に処理する手間もなく安心して解
凍が行なえ、また解凍終了後任意の時間に被解凍食品45
を利用できることになり極めて使い勝手がよい。After the thawing is completed, the temperature detector
Based on the detected temperature of 31, the temperature inside the thawing chamber 15 is controlled.
Therefore, the food 45 to be thawed after thawing is immediately cooled so as to be stabilized in the partial freezing temperature zone of about -3 ° C, and the temperature does not further rise due to residual heat. Then, even if the thawing is completed, the chill is kept in a partial freezing temperature range of about -3 ° C. which is suitable for preserving raw materials such as fish and meat. Thaws can be thawed with peace of mind without the hassle of processing immediately, and at any time after thawing is complete,
Can be used, which is extremely convenient.
発明の効果 以上の様に本発明の解凍室付冷蔵庫によると次の様な
効果が得られる。Effects of the Invention As described above, according to the refrigerator with a thawing room of the present invention, the following effects can be obtained.
（１）上面より遠赤外線ヒータによる遠赤外線放射加
熱，底面より加熱ヒータによる熱伝導加熱の両面より効
率的に加熱でき、しかも解凍中は両ヒータの発熱容量が
段階的に低下してゆくこと及び遠赤外線の被解凍食品内
部への浸透効果とも合わせて中心部と表面部の温度むら
の少ない解凍が可能となる。(1) Far-infrared radiation heating by a far-infrared heater from the top surface, and heat conduction heating by a heater from the bottom surface can be more efficiently heated from both sides, and the heating capacity of both heaters gradually decreases during thawing. In addition to the effect of penetrating far-infrared rays into the inside of the food to be thawed, defrosting with less temperature unevenness between the center and the surface becomes possible.
（２）解凍室底面板に設けた温度検知器が所定温度に上
昇するまでは遠赤外線ヒータ、加熱ヒータを連続通電さ
せるため、被解凍食品の重量が変化しても夫々に適した
時間だけ最大容量のヒータで急速な加熱が行え、短時間
の解凍が可能となる。(2) The far-infrared heater and the heating heater are continuously energized until the temperature detector provided on the bottom plate of the thawing room rises to a predetermined temperature. Rapid heating can be performed with a heater having a capacity, and thawing in a short time is possible.
（３）解凍中は解凍室用のダンパーサーモを強制的に開
放させるとともに送風機を強制的に連続運転させて反射
板の裏面空間に形成した通風路より被解凍食品に対して
冷気を降下流入させるため被解凍食品の表面部が均等に
冷却され更に温度上昇が抑制されて解凍むらの少ない解
凍が実現できる。(3) During thawing, the damper thermostat for the thawing room is forcibly opened and the blower is forcibly operated continuously to allow cool air to flow down into the food to be thawed from the ventilation path formed in the back space of the reflector. Therefore, the surface portion of the food to be thawed is uniformly cooled, and the temperature rise is further suppressed, so that thawing with less thawing unevenness can be realized.
（４）解凍中、本来なら高温になる反射板その他周辺部
材も反射板が通風路に露出して冷却されるため温度低下
し安全上も好都合である。(4) During thawing, the temperature of the reflector and other peripheral members, which would normally be high, is reduced because the reflector is exposed to the ventilation passage and cooled, which is advantageous in terms of safety.
（５）解凍終了後は解凍室内が冷凍室温度と冷蔵室温度
の間の第３の温度帯（例えば約−３℃のパーシャルフリ
ージング温度帯）に保冷されるため、解凍終了直後の余
熱で被解凍食品の温度が更に上昇することがなく、その
まま放置しておいても魚肉等の生ものに適した温度で鮮
度が保持され任意の時間に食品を利用することが出来
る。(5) After the thawing is completed, the thawing room is kept cool in a third temperature zone (for example, a partial freezing temperature zone of about −3 ° C.) between the freezing room temperature and the refrigerating room temperature. The temperature of the thawed food does not further rise, and even if it is left as it is, freshness is maintained at a temperature suitable for raw fish and the like, and the food can be used at any time.
第１図は本発明の一実施例を示す解凍室付冷蔵庫の斜視
図、第２図は同第１図の解凍室のＡ−Ａ′線における断
面図、第３図は同第１図の解凍室を備えた解凍室付冷蔵
庫の縦断面図、第４図は同第１図の解凍室の入口に設け
たダンパーサーモの拡大断面図、第５図は同第３図の解
凍室付冷蔵庫の電気回路及び制御回路図、第６図は解凍
中のタイムチャート及び被解凍食品の温度特性図、第７
図は従来例を示す解凍箱の斜視図、第８図は同第７図の
解凍箱のＢ−Ｂ′線における断面図である。 13……冷凍室、14……冷蔵室、15……解凍室、16……圧
縮機、17……冷却器、18……送風機、20……ダンパーサ
ーモ、34……遠赤外線ヒータ、39……反射板、40……通
風孔、41……底面板、42……加熱ヒータ、43……温度検
知器、44……解凍皿、45……被解凍食品、49……扉、50
……通風路、73……解凍制御装置。FIG. 1 is a perspective view of a refrigerator with a defrosting chamber showing one embodiment of the present invention, FIG. 2 is a sectional view of the defrosting chamber of FIG. 1 taken along the line AA ', and FIG. FIG. 4 is a longitudinal sectional view of a refrigerator with a thawing room having a thawing room, FIG. 4 is an enlarged sectional view of a damper thermostat provided at the entrance of the thawing room of FIG. 1, and FIG. 5 is a refrigerator with a thawing room of FIG. FIG. 6 is a time chart during thawing and a temperature characteristic diagram of the food to be thawed, FIG.
FIG. 8 is a perspective view of a conventional thawing box, and FIG. 8 is a sectional view of the thawing box of FIG. 7 taken along the line BB '. 13… Freezer room, 14… Refrigerator room, 15… Thaw room, 16 …… Compressor, 17 …… Cooler, 18 …… Blower, 20 …… Damper thermo, 34 …… Far infrared heater, 39… … Reflector, 40 …… Ventilation hole, 41 …… Bottom plate, 42 …… Heating heater, 43 …… Temperature detector, 44 …… Thaw plate, 45 …… Thawed food, 49 …… Door, 50
…… Ventilation passage, 73 …… Thaw control device.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F25D 23/12 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F25D 23/12
Claims (1)
れて前面開口部に開閉自在の扉を設けた解凍室と、冷凍
サイクルの圧縮機，冷却器と、前記冷却器により冷却さ
れた空気を前記冷凍室，冷蔵室，解凍室に強制通風させ
る送風機と、前記解凍室の上部に設けた遠赤外線ヒータ
と、金属製の底面板の裏面に熱伝導的に密着させた加熱
ヒータと、前記底面板の裏面の略中央に熱伝導的に密着
させた温度検知器と、前記遠赤外線ヒータの上面をドー
ム状に覆う金属製の反射板と、被解凍食品を載置して前
記底面板状に熱伝導的、且つ着脱自在に設置される解凍
皿と、前記解凍室の吐出口に連通して電気的入力で冷気
流入量を調節するダンパーサーモと、前記ダンパーサー
モより連通し、前記反射板の裏面上部空間に形成した通
風路と、前記反射板に設けて前記通風路と解凍室内を連
通さす多数の通風孔と、解凍中は前記ダンパーサーモを
強制開放させ、前記送風機を強制運転させるとともに、
解凍開始から前記温度検知器の温度が所定温度に上昇す
るまで時間は前記遠赤外線ヒータ及び前記加熱ヒータを
連続通電させ、以後は前記両ヒータへの通電を断続的に
行わせて時間経過により段階的に断続通電率を低下さ
せ、且つ非解凍時には前記解凍室を冷蔵温度と冷凍温度
の間の第３の温度帯に維持させる解凍制御装置とより成
る解凍室付冷蔵庫。1. A freezing room, a refrigerating room, a thawing room having an outer periphery surrounded by a heat insulating material and having a door which can be opened and closed at a front opening, a compressor and a cooler of a refrigerating cycle, and the cooler. A blower for forcibly ventilating the cooled air through the freezing, chilling, and thawing chambers, a far-infrared heater provided at the top of the thawing chamber, and a heating device in heat conductive contact with the back of the metal bottom plate. A heater, a temperature detector that is thermally conductively attached to substantially the center of the back surface of the bottom plate, a metal reflector that covers the upper surface of the far-infrared heater in a dome shape, and a food to be thawed are placed. A thawing plate that is thermally conductive and detachably installed on the bottom plate, a damper thermostat that communicates with a discharge port of the thawing chamber and controls the amount of cold air inflow by an electrical input, and a communication from the damper thermostat. A ventilation path formed in a space above the back surface of the reflection plate; Together with the a large number of ventilation holes to communicate with the air passage thawed chamber, decompressing the forced opening the damper thermo, forcibly driving the fan provided,
From the start of thawing to the time when the temperature of the temperature detector rises to a predetermined temperature, the far-infrared heater and the heating heater are continuously energized. A refrigerator with a thawing control device, comprising: a thawing control device for lowering the intermittent power supply rate and maintaining the thawing room in a third temperature zone between a refrigeration temperature and a freezing temperature during non-thawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1275317A JP2892710B2 (en) | 1989-10-23 | 1989-10-23 | Refrigerator with thawing room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1275317A JP2892710B2 (en) | 1989-10-23 | 1989-10-23 | Refrigerator with thawing room |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03137481A JPH03137481A (en) | 1991-06-12 |
| JP2892710B2 true JP2892710B2 (en) | 1999-05-17 |
Family
ID=17553763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1275317A Expired - Fee Related JP2892710B2 (en) | 1989-10-23 | 1989-10-23 | Refrigerator with thawing room |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2892710B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101583653B1 (en) | 2008-05-15 | 2016-01-21 | 이글 고우교 가부시기가이샤 | Lip type seal |
-
1989
- 1989-10-23 JP JP1275317A patent/JP2892710B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03137481A (en) | 1991-06-12 |
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