JPH02118383A - Refrigerator - Google Patents

Abstract

PURPOSE:To contrive the even cooling of the inside of a cooling chamber by a method wherein an operation, in which the outflow of cold air out of either one of cold air outlet ports is carried out until the detecting temperature of a temperature sensor corresponding to the cold air outlet port becomes lower than a cooling stopping temperature, is effected with respect to respective cold air outlet ports while switching one by one. CONSTITUTION:An upper stage in a refrigerating chamber 3 is judged at first whether it is being cooled or not or whether cold air is being made to flow out of the cold air outlet port 8 of the upper stage or not. When the upper stage is being cooled in this case, the cooling of the upper stage is continued until the detecting temperature of an upper stage temperature sensor 11 becomes lower than a predetermined cooling stopping temperature Tl. Thereafter, when the detecting temperature of the upper stage temperature sensor 11 has become lower than the cooling stopping temperature Tl, a 'flag indicating that the upper stage is being cooled' is reset and the cold air outlet port 8 of the upper stage is closed. The closing operation is effected by starting the motor 14 of a cold air outflow position switching mechanism 13 to pivot a cam 15 whereby a movable opening body 18 is moved to the closing position thereof and the lower end opening of the movable opening body 18 is closed by a closing surface unit 23.

Description

【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、いわゆる間接冷却式の冷却室を備えた冷蔵庫
に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a refrigerator equipped with a cooling chamber of a so-called indirect cooling type.

（従来の技術） 従来、間接冷却式の冷却室（例えば冷蔵室）は、一般に
、冷却室内に冷気吹出口と温度センサを１つずつ設け、
その温度センサの検知−温度に基いて冷気吹出口の開度
を例えばモータダンパーで調節して、冷気の吹出量を調
節することによって、冷却室内の温度を調節するように
なっていた。(Prior Art) Conventionally, an indirect cooling type cooling room (for example, a refrigerator room) generally has one cold air outlet and one temperature sensor in the cooling room.
Based on the temperature detected by the temperature sensor, the opening degree of the cold air outlet is adjusted using, for example, a motor damper, and the amount of cold air blown out is adjusted, thereby controlling the temperature inside the cooling chamber.

（発明が解決しようとする課題） 上記従来構成では、冷気の吹出しが常に同じ位置からな
されるため、冷却室内に例えばガラス棚等の風通しの悪
い物を設けた場合、或は棚に多くの食品を載せてその棚
の風通しが悪くなった場合には、冷却室内の冷気の循環
が妨げられて冷却室内の温度分布に大きな偏りを生じ、
冷却室内を均一に冷却できないという欠点がある。特に
、近年のように冷却室（冷蔵室）が大形化する程、本来
的に冷気が隅々に行き渡りにくくなり、上述した事情と
相俟って冷却室内の温度分布が悪化する傾向にあった。(Problems to be Solved by the Invention) In the above conventional configuration, the cold air is always blown from the same position, so if there is an object with poor ventilation, such as a glass shelf, in the cooling chamber, or if there are many foods on the shelf, If the ventilation of the shelf becomes poor due to the presence of a
The disadvantage is that the inside of the cooling chamber cannot be cooled uniformly. In particular, as cooling rooms (refrigerating rooms) have become larger in recent years, it has become increasingly difficult for cold air to spread to every corner, and this, combined with the above-mentioned circumstances, tends to worsen the temperature distribution within the cooling room. Ta.

本発明はこのような事情を考慮してなされたもので、従
ってその目的は、冷却室内の温度分布の偏りを逐次調整
できて、冷却室内をむらなく冷却できる冷蔵庫を提供す
るにある。The present invention has been made in consideration of these circumstances, and an object of the present invention is to provide a refrigerator that can sequentially adjust the unevenness of the temperature distribution within the cooling chamber and cool the inside of the cooling chamber evenly.

［発明の構成コ （課題を解決するための手段） 本発明の冷蔵庫は、冷却室内の複数箇所に設けられた複
数の冷気吹出口と、これら複数の冷気吹出口のうちから
択一的に冷気の吹出しを許容する冷気吹出位置切換機構
と、前記冷却室内における前記各冷気吹出口に対応する
各位置の温度を検知する複数の温度センサとを備えたも
のであって、いずれか一の冷気吹出口からの冷気の吹出
しを、それに対応する一の温度センサの検知温度が所定
の冷却停止温度以下になるまで実行するという動作を、
各冷気吹出口について逐次切換えて行うように前記冷気
吹出位置切換機構を制御する制御手段を設けたものであ
る。[Configuration of the Invention (Means for Solving the Problems)] The refrigerator of the present invention has a plurality of cold air outlets provided at a plurality of locations in a cooling chamber, and a cold air outlet selectively selected from among the plurality of cold air outlets. and a plurality of temperature sensors that detect the temperature at each position corresponding to each of the cold air outlets in the cooling chamber, The operation of blowing out cold air from the outlet until the temperature detected by the corresponding one temperature sensor becomes equal to or lower than a predetermined cooling stop temperature,
A control means is provided for controlling the cold air blowing position switching mechanism so as to sequentially switch each cold air blowing outlet.

（作用） 冷却室内の複数箇所に温度センサが設けられているから
、冷却室内の温度分布に偏りが生じれば、それが各温度
センサによって検知される。これに基いて、制御手段が
、いずれか一の冷気吹出口からの冷気の吹出しを、それ
に対応する一の温度センサの検知温度が所定の冷却停止
温度以下になるまで実行するという動作を、各冷気吹出
口について逐次切換えて行うように制御する。これによ
って、冷気の吹出位置が冷却室内の温度が高い方に位置
する冷気吹出口に逐次切換えられ、冷却室内かむらなく
冷却される。(Function) Since temperature sensors are provided at a plurality of locations within the cooling chamber, any deviation in temperature distribution within the cooling chamber will be detected by each temperature sensor. Based on this, the control means performs an operation of blowing out cold air from any one of the cold air outlets until the temperature detected by the corresponding one temperature sensor becomes equal to or lower than the predetermined cooling stop temperature. The cold air outlet is controlled to be switched sequentially. As a result, the position of the cold air outlet is sequentially switched to the cold air outlet located at the higher temperature within the cooling chamber, and the cooling chamber is evenly cooled.

（実施例） 以下、本発明の一実施例を図面に基いて説明する。まず
、冷蔵庫の縦断側面図を示す第１図において、１は庫本
体で、その内部に冷凍室２、冷却室たる冷蔵室３及び野
菜収納室４が上下３段に設けられ、これら各室が夫々扉
２ａ、３ａ、４ａによって開閉される。５は冷蔵室３内
の中段に配設したガラス棚、６は庫本体１の背面に設け
た主送風ダクトで、冷凍室２内の背部に設けた冷却器７
と送風ファン７ａとにより生成された冷風が、上記主送
風ダクト６を通して冷蔵室３側に導かれるようになって
いる。そして、この主送風ダクト６の下端開口が上段の
冷気吹出口８として冷蔵室３内の上部（ガラス棚５の上
方）に位置している。(Example) Hereinafter, one example of the present invention will be described based on the drawings. First, in FIG. 1 showing a longitudinal side view of a refrigerator, 1 is a refrigerator main body, inside which a freezing compartment 2, a refrigerating compartment 3 serving as a cooling compartment, and a vegetable storage compartment 4 are provided in three upper and lower levels. They are opened and closed by doors 2a, 3a, and 4a, respectively. 5 is a glass shelf installed in the middle of the refrigerator compartment 3, 6 is a main air duct installed at the back of the refrigerator body 1, and a cooler 7 is installed at the back of the freezer compartment 2.
The cold air generated by the air blower fan 7a is guided to the refrigerator compartment 3 side through the main air duct 6. The lower end opening of this main air duct 6 is located at the upper part of the refrigerator compartment 3 (above the glass shelf 5) as an upper cold air outlet 8.

更に、冷蔵室３の背部には、角筒状の延長送風ダクト９
がその上端開口を上段の冷気吹出口８に臨ませるように
配設され、その下端開口が下段の冷気吹出口１０として
冷蔵室３内の下部（ガラス棚５の下方）に位置している
。そして、上下両段の各冷気吹出口８．１０に対応する
各位置の温度を検知するために、ガラス棚５の上方部と
冷蔵室３の底部には、夫々温度センサ１１，１２が設け
られている。１３は上下両段の冷気吹出口８．１０のう
ちから択一的に冷気の吹出しを許容する冷気吹出位置切
換機構で、以下、この構成について第２図乃至第４図に
基いて説明する。即ち、この冷気吹出位置切換機構１３
は、モータ１４によって回転されるカム１５と、このカ
ム１５の回転により前後方向にスライドされるスピンド
ル１６と、このスピンドル１６によって軸１７を中心に
して揺動される可動目体１８とから構成されている。Furthermore, at the back of the refrigerator compartment 3, there is a rectangular cylindrical extended ventilation duct 9.
is arranged so that its upper end opening faces the upper cold air outlet 8, and its lower end opening is located at the lower part of the refrigerator compartment 3 (below the glass shelf 5) as the lower cold air outlet 10. In order to detect the temperature at each position corresponding to each cold air outlet 8.10 in both the upper and lower stages, temperature sensors 11 and 12 are provided at the upper part of the glass shelf 5 and at the bottom of the refrigerator compartment 3, respectively. ing. Reference numeral 13 denotes a cold air blowing position switching mechanism that selectively allows cold air to be blown out from the upper and lower cold air blowing ports 8.10.This configuration will be described below with reference to FIGS. 2 to 4. That is, this cold air blowing position switching mechanism 13
consists of a cam 15 rotated by a motor 14, a spindle 16 slid back and forth by the rotation of the cam 15, and a movable eye 18 pivoted about a shaft 17 by the spindle 16. ing.

そして、可動目体１８の背壁１８ａには、ヒンジ部１９
を介して風向板部２０が形成され、この風向板部２０の
上端両側に突設した凸部２１が、主送風ダクト６内の背
部両側に形成したガイド溝部２２内を上下にスライド可
能になっている。この場合、可動目体１８の位置は、第
２図から第４図に示す３段階に切換えられるようになっ
ており、第２図の位置（以下「上段開放位置」という）
では、可動目体１８の背壁１８ａの下端が延長送風ダク
ト９の前壁９ａの上端に合致して可動目体１８の下端開
口が冷蔵室３内の上段部分に向って開放され、上段の冷
気吹出口８から冷蔵室３内への冷気の吹出しを許容する
。また、第３図の位置（以下「下段開放位置」という）
では、可動目体１８の下端開口が延長送風ダクト９の上
端開口に合致した状態になって、下段の冷気吹出口１０
からの冷気の吹出しを許容する。更に、第４図の位置（
以下「閉鎖位置」という）では、可動目体１８の下端開
口が延長送風ダクト９の背方に位置する閉鎖面部２３に
合致した状態になって、上下両段の冷気吹出口８．１０
が共に閉鎖される。尚、可動目体１８には、ばね（図示
せず）等によって第２図の矢印Ａ方向への復帰力が付与
されている。A hinge portion 19 is provided on the back wall 18a of the movable eye body 18.
A wind direction plate portion 20 is formed through the wind direction plate portion 20, and convex portions 21 protruding from both sides of the upper end of this wind direction plate portion 20 can slide up and down in guide groove portions 22 formed on both sides of the back inside the main air duct 6. ing. In this case, the position of the movable eye body 18 can be switched to three stages shown in FIG. 2 to FIG. 4, and the position shown in FIG. 2 (hereinafter referred to as "upper open position")
In this case, the lower end of the back wall 18a of the movable eyepiece 18 matches the upper end of the front wall 9a of the extended ventilation duct 9, and the lower end opening of the movable eyepiece 18 is opened toward the upper part of the refrigerator compartment 3. Cold air is allowed to be blown into the refrigerator compartment 3 from the cold air outlet 8. Also, the position shown in Figure 3 (hereinafter referred to as "lower open position")
Now, the lower end opening of the movable eye 18 is aligned with the upper end opening of the extended ventilation duct 9, and the lower cold air outlet 10 is opened.
Allow cold air to blow out from the Furthermore, the position shown in Figure 4 (
In the "closed position" (hereinafter referred to as "closed position"), the lower end opening of the movable eye 18 is aligned with the closed surface part 23 located at the back of the extended air duct 9, and the cold air outlets 8.10 of both upper and lower stages are aligned.
will be closed together. Note that a return force in the direction of arrow A in FIG. 2 is applied to the movable eye body 18 by a spring (not shown) or the like.

斯かる構成の冷気吹出位置切換機構１３は、制御手段（
図示せず）によって第５図のフローチャートに示すよう
に制御される。即ち、まず冷蔵室３内の上段が冷却中で
あるか否か、即ち上段の冷気吹出口８から冷気が吹出し
ているか否かが判断される（ステップＰｉ）。このとき
、上段が冷却中の場合には、上段の温度センサ１１の検
知温度が所定の冷却停止温度Ｔ１．以下になるまで上段
の冷却を続ける（ステップＰ２）。その後、上段の温度
センサ１１の検知温度が冷却停止温度Ｔ１．以下になっ
た時点で、「上段冷却中フラグ」をリセットして（ステ
ップＰ３）、上段の冷気吹出口８を閉じる（ステップＰ
４）。この閉動作は、冷気吹出位置切換機構１３のモー
タ１４を起動してカム１５を回動させて行い、それによ
って可動目体１８を第４図の閉鎖位置に移動させて、そ
の可動目体１８の下端開口を閉鎖面部２３で閉鎖した状
態にする。The cold air blowing position switching mechanism 13 having such a configuration has a control means (
(not shown) as shown in the flowchart of FIG. That is, first, it is determined whether the upper stage in the refrigerator compartment 3 is being cooled, that is, whether cold air is being blown out from the upper stage cold air outlet 8 (step Pi). At this time, when the upper stage is being cooled, the temperature detected by the upper stage temperature sensor 11 is the predetermined cooling stop temperature T1. Cooling of the upper stage is continued until the temperature becomes below (Step P2). Thereafter, the temperature detected by the upper temperature sensor 11 becomes the cooling stop temperature T1. When the following conditions are reached, the "upper stage cooling flag" is reset (step P3), and the upper stage cold air outlet 8 is closed (step P3).
4). This closing operation is performed by starting the motor 14 of the cold air blowing position switching mechanism 13 and rotating the cam 15, thereby moving the movable eye body 18 to the closed position shown in FIG. The lower end opening is closed by the closing surface part 23.

一方、ステップＰ１において、上段が冷却中でないと判
断された場合には、冷蔵室３内の下段が冷却中であるか
否か、即ち下段の冷気吹出口１０から冷気が吹出してい
るか否かが判断される（ステップＰ５）。このとき、下
段が冷却中の場合には、下段の温度センサ１２の検知温
度が冷却停止温度ＴＩ以下になるまで下段の冷却を続け
る（ステップＰ６）。その後、下段の温度センサ１２の
検知温度が冷却停止温度Ｔ１．以下になった時点で、。On the other hand, in step P1, if it is determined that the upper stage is not being cooled, it is determined whether the lower stage in the refrigerator compartment 3 is being cooled, that is, whether cold air is blowing out from the cold air outlet 10 of the lower stage. A determination is made (step P5). At this time, if the lower stage is being cooled, the lower stage continues to be cooled until the temperature detected by the lower stage temperature sensor 12 becomes equal to or lower than the cooling stop temperature TI (step P6). Thereafter, the temperature detected by the lower temperature sensor 12 becomes the cooling stop temperature T1. When it becomes below.

「下段冷却中フラグ」をリセットして（ステップＰ７）
、下段の冷気吹出口１０を閉じる（ステップＰ８）。こ
の閉動作は、上述と同じく可動目体１８を第４図の閉鎖
位置に移動させて行う。Reset the "lower stage cooling flag" (step P7)
, close the lower cold air outlet 10 (step P8). This closing operation is performed by moving the movable eye body 18 to the closed position shown in FIG. 4, as described above.

一方、ステップＰ１，２において、いずれも否（ＮＯ）
と判断された場合、即ち上下両段共に冷却中でない場合
には、まずステップＰ９で、上段の温度センサ１１の検
知温度が所定の冷却開始温度Ｔｕ以上であるか否かが判
断され、それが否（ＮＯ）と判断された場合には、ステ
ップＰＩＯで、下段の温度センサ１２の検知温度が冷却
開始温度Ｔｕ以上であるか否かが判断される。例えば、
ステップＰ９において、上段の温度センサ１１の検知温
度が冷却開始温度Ｔｕ以上と判断されると、「上段冷却
中フラグ」をセットして（ステップＰ１１）、上段の冷
気吹出口８から冷気を吹出させる（ステップＰ１２）。On the other hand, in steps P1 and P2, both are negative (NO).
If it is determined that this is the case, that is, if both the upper and lower stages are not being cooled, it is first determined in step P9 whether or not the temperature detected by the upper stage temperature sensor 11 is equal to or higher than a predetermined cooling start temperature Tu. If the determination is NO, it is determined in step PIO whether the temperature detected by the lower temperature sensor 12 is equal to or higher than the cooling start temperature Tu. for example,
In step P9, when it is determined that the temperature detected by the upper stage temperature sensor 11 is equal to or higher than the cooling start temperature Tu, the "upper stage cooling flag" is set (step P11), and cold air is blown out from the upper stage cold air outlet 8. (Step P12).

この動作は可動目体１８を第２図の上段冷却位置へ移動
させて行う。この後は、ステップＰ１において、是（Ｙ
ＥＳ）と判断されるから、上述と同じく上段の温度が冷
却停止温度Ｔ（以下になるまで上段の冷気吹出口８から
冷気が吹出される（ステップＰ２，３．４）。This operation is performed by moving the movable eye body 18 to the upper cooling position in FIG. After this, in step P1, YES (Y
ES), the cold air is blown out from the upper cold air outlet 8 until the upper stage temperature reaches the cooling stop temperature T (step P2, 3.4).

また、ステップＰ９で、否（Ｎｏ）と判断されて、ステ
ップＰ１０で是（ＹＥＳ）と判断された場合、即ち下段
のみが冷却開始温度Ｔｕ以上の場合には、「下段冷却中
フラグ」をセットして（ステップＰ１３）、下段の冷気
吹出口１０から冷気を吹出させる（ステップＰ１４）。Further, if it is determined in step P9 that the answer is NO, and if it is determined as YES in step P10, that is, if only the lower stage is higher than the cooling start temperature Tu, the "lower stage cooling flag" is set. (Step P13), and cool air is blown out from the lower cold air outlet 10 (Step P14).

この動作は、可動目体１８を第３図の下段冷却位置へ移
動させて行う。この後は下段の温度が冷却停止温度Ｔ（
以下になるまで下段の冷気吹出口１０から冷気が吹出さ
れる（ステップＰ６，７．８）。This operation is performed by moving the movable eye body 18 to the lower cooling position in FIG. After this, the temperature in the lower row is the cooling stop temperature T (
Cold air is blown out from the lower cold air outlet 10 until the temperature is below (steps P6, 7.8).

次に、上記制御手段による実際の温度制御の一例を第６
図に基いて説明する。第６図において、時刻ｔ１では、
上下両段共に、冷却開始温度Ｔｕ以上になっている。こ
の場合には、ステップＰ９からステップｐＨに移行して
、「上段冷却中フラグ」をセットした上で、可動目体１
８を第２図の上段冷却位置に移動させて上段の冷気吹出
口８から冷気を吹出させる（ステップＰ１２）。この上
段側への冷気の吹出しにより、上段の温度が冷却停止温
度Ｔ！以下になった時点ｔ２で、上段の冷気吹出口８か
らの冷気の吹出しを停止する（ステップＰ２，３．４）
。この時点ｔ２では下段の温度が冷却開始温度Ｔｕ以上
になっているため、ステップＰＩＯで是（ＹＥＳ）と判
断され、直ちに可動目体１８を第３図の下段冷却位置へ
切換えて下段の冷気吹出口１０から冷気を吹出させる（
ステップＰ１４）。この後、下段の温度が冷却停止温度
Ｔ１．以下になった時点ｔ３で、下段の冷気吹出口１０
からの冷気の吹出しを停止する（ステップＰ６，７．８
）。この後、時刻ｔ１になるまでは、上下両段共に冷却
開始温度Ｔｕ以下であるため、上下いずれの冷気吹出口
８．１０からも冷気は吹出されない。そして、時刻ｔ４
で下段の温度が冷却開始温度Ｔｕ以上になると、下段の
冷気吹出口１０から冷気を吹出させ（ステップＰ１４）
、それを下段の温度が冷却停止温度Ｔ！以下になった時
点ｔｓで停止する（ステップＰ６，７゜８）。この時点
ｔ６では、上段の温度が冷却開始温度Ｔｕ以上になって
いるため、直ちに可動目体１８を第２図の上段冷却位置
へ切換えて上段の冷気吹出口１０から冷気を吹出させ、
以後、上述した動作を繰返して上段側と下段側の温度を
共に適正温度範囲θ内に収めるように制御する。Next, an example of actual temperature control by the above control means will be explained in the sixth section.
This will be explained based on the diagram. In FIG. 6, at time t1,
Both the upper and lower stages are at or above the cooling start temperature Tu. In this case, move from step P9 to step pH, set the "upper stage cooling flag", and then move the movable eye body 1.
8 to the upper cooling position in FIG. 2, and cool air is blown out from the upper cold air outlet 8 (step P12). Due to this blowing of cold air to the upper stage side, the temperature of the upper stage reaches the cooling stop temperature T! At time t2 when the temperature is below, the blowing of cold air from the upper cold air outlet 8 is stopped (step P2, 3.4).
. At this time t2, the temperature of the lower stage is equal to or higher than the cooling start temperature Tu, so it is judged as YES in step PIO, and the movable eye body 18 is immediately switched to the lower stage cooling position in Fig. 3 to blow cold air from the lower stage. Blow out cold air from outlet 10 (
Step P14). After this, the temperature in the lower stage becomes the cooling stop temperature T1. At time t3 when the temperature becomes below, the lower cold air outlet 10
Stop blowing out cold air from (steps P6, 7.8
). After this, until time t1, both the upper and lower stages are below the cooling start temperature Tu, so no cold air is blown out from either the upper or lower cold air outlet 8.10. And time t4
When the temperature of the lower stage becomes equal to or higher than the cooling start temperature Tu, cold air is blown out from the cold air outlet 10 of the lower stage (step P14).
, the lower temperature is the cooling stop temperature T! It stops at the time ts when the value becomes below (steps P6, 7°8). At this time point t6, the temperature of the upper stage is equal to or higher than the cooling start temperature Tu, so the movable eye body 18 is immediately switched to the upper stage cooling position in FIG. 2, and cold air is blown out from the upper stage cold air outlet 10.
Thereafter, the above-described operation is repeated to control the temperatures of both the upper and lower stages to be within the appropriate temperature range θ.

上記実施例によれば、複数の温度センサ１１゜１２によ
って冷蔵室３内の各位置の温度を検知し、それによって
冷蔵室３内の温度分布の偏りを判断して、いずれか一の
冷気吹出口８，１０からの冷気の吹出しを、それに対応
する一の温度センサ１１．１２の検知温度が所定の冷却
停止温度Ｔ　１．以下になるまで実行するという動作を
、各冷気吹出口８，１０について逐次切換えて行うよう
に制御する構成としたので、たとえ冷蔵室３内に冷気の
循環を妨げる物体（例えばガラス棚５９食品等）があっ
たとしても、それによって生ずる冷蔵室３内の温度分布
の偏りを逐次調整できて、冷蔵室３内をむらなく冷却で
できる。According to the above embodiment, the temperature at each position in the refrigerator compartment 3 is detected by the plurality of temperature sensors 11 and 12, and the bias in the temperature distribution in the refrigerator compartment 3 is determined based on the temperature sensor 11 and 12. When the cold air is blown out from the outlets 8 and 10, the temperature detected by the corresponding temperature sensor 11.12 is a predetermined cooling stop temperature T1. The configuration is such that the operation is sequentially switched for each cold air outlet 8, 10 until the following conditions are reached. ), it is possible to sequentially adjust the uneven temperature distribution within the refrigerator compartment 3 caused by this, and the interior of the refrigerator compartment 3 can be cooled evenly.

尚、上記実施例では、冷気吹出口と温度センサを各々２
個ずつ設けたが、これらを３個以上ずつ設ける構成とし
ても良い。また、上記実施例は、冷蔵室３内の冷却を行
う場合の適用例であるが、他の冷却室、例えば冷凍室或
はいわゆる氷温室（チルドルーム）等にも適用できる。In the above embodiment, there are two cold air outlets and two temperature sensors each.
Although these are provided one by one, it is also possible to provide three or more of these. Moreover, although the above embodiment is an example of application in the case of cooling the inside of the refrigerator compartment 3, it can also be applied to other cooling compartments, such as a freezing compartment or a so-called ice room (chilled room).

更には、冷気吹出位置切換機構としては、例えば各冷気
吹出口に夫々ダンパーを設け、各ダンパーをモータ。Furthermore, as a cold air blowing position switching mechanism, for example, a damper is provided at each cold air blowing outlet, and each damper is driven by a motor.

電磁石等で選択的に開閉する構成のものであっても良い
。It may be configured to selectively open and close using an electromagnet or the like.

［発明の効果］ 本発明は以上の説明から明らかなように、いずれか一の
冷気吹出口からの冷気の吹出しを、それに対応する一の
温度センサの検知温度が所定の冷却停止温度以下になる
まで実行するという動作を、各冷気吹出口について逐次
切換えて行うように制御する構成としたので、たとえ冷
却室内に冷気の循環を妨げる物体（例えばガラス棚２食
品等）があったとしても、それによって生ずる冷却室内
の温度分布の偏りを逐次調整できて、冷却室内をむらな
く冷却できるという優れた効果を奏する。[Effects of the Invention] As is clear from the above description, the present invention allows cold air to be blown out from any one of the cold air outlets so that the temperature detected by one of the corresponding temperature sensors becomes equal to or lower than a predetermined cooling stop temperature. Since the configuration is configured to control the operation to be performed by sequentially switching each cold air outlet, even if there is an object that blocks the circulation of cold air in the cooling chamber (for example, two food items on the glass shelf), it will not be It is possible to successively adjust the unevenness of the temperature distribution within the cooling chamber caused by this, resulting in an excellent effect that the inside of the cooling chamber can be cooled evenly.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の一実施例を示したもので、第１図は冷蔵
庫全体の縦断側面図、第２図乃至第４図は冷気吹出位置
切換機構の動作を説明するために夫々異なる状態で示す
要部の拡大縦断側面図、第５図は制御プログラムの内容
を示すフローチャート、第６図は冷却運転時の温度変化
と冷気吹出位置の切換との藺係を示す図である。 図面中、３は冷蔵室（冷却室）、５はガラス棚、６は主
送風ダクト、８は上段の冷気吹出口、９は延長送風ダク
ト、１０は下段の冷気吹出口、１１は上段の温度センサ
、１２は下段の温度センサ、１３は冷気吹出位置切換機
構、１８は可動目体である。The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional side view of the entire refrigerator, and FIGS. 2 to 4 are shown in different states to explain the operation of the cold air blowing position switching mechanism. FIG. 5 is a flowchart showing the contents of the control program, and FIG. 6 is a diagram showing the relationship between temperature change during cooling operation and switching of the cold air blowing position. In the drawing, 3 is the refrigerator room (cooling room), 5 is the glass shelf, 6 is the main air duct, 8 is the upper cold air outlet, 9 is the extended air duct, 10 is the lower cold air outlet, and 11 is the upper temperature. 12 is a lower temperature sensor, 13 is a cold air blowing position switching mechanism, and 18 is a movable eye.

Claims (1)

【特許請求の範囲】[Claims] １、冷却室内の複数箇所に設けられた複数の冷気吹出口
と、これら複数の冷気吹出口のうちから択一的に冷気の
吹出しを許容する冷気吹出位置切換機構と、前記冷却室
内における前記各冷気吹出口に対応する各位置の温度を
検知する複数の温度センサとを備えたものであって、い
ずれか一の冷気吹出口からの冷気の吹出しを、それに対
応する一の温度センサの検知温度が所定の冷却停止温度
以下になるまで実行するという動作を、各冷気吹出口に
ついて逐次切換えて行うように前記冷気吹出位置切換機
構を制御する制御手段を設けたことを特徴とするする冷
蔵庫。1. A plurality of cold air outlets provided at a plurality of locations in the cooling chamber, a cold air outlet position switching mechanism that selectively allows cold air to be blown out from among the plurality of cold air outlets, and each of the cold air outlets in the cooling chamber. It is equipped with a plurality of temperature sensors that detect the temperature at each position corresponding to the cold air outlet, and when the cold air is blown out from any one of the cold air outlets, the detection temperature of the corresponding one temperature sensor is detected. 1. A refrigerator comprising a control means for controlling said cold air blowing position switching mechanism so as to sequentially switch and perform an operation for each cold air blowing outlet until the temperature reaches a predetermined cooling stop temperature or less.