JPH1082571A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dewing on the outer surface of a refrigerator body at the time of stopping a compressor and to prevent rise of a suction pressure of the compressor by controlling a cold storage chamber damper according to an operating state of the refrigerator. SOLUTION: When a temperature in a deep freezing chamber rises and a cooling operation set temperature or higher of the chamber is sensed by a deep freezing chamber temperature sensor, a cooling operation is started (S12. A cold storage chamber is set to a cold storage chamber damper (R damper) closing set temperature +X deg.C obtained by setting the cold storage chamber damper closing set temperature by X deg.C higher. In this case, the R damer is controlled to be cooled. If it becomes the R damper closing set temperature + X deg.C or lower, the R damper is closed (S2, S3, S4). When the R damper is closed, cold air is supplied only to the freezing chamber, and the temperature in the freezing chamber is lowered. When the temperature in the freezing chamber is lowered to the freezing chamber cooling stop set temperature or lower, the R damper is opened, the cold air is supplied into the storage chamber (S5, S6). When the storage chamber is cooled and a cold storage chamber temperature sensor arrives at an R damper closing set temperature (S7), a deep freezing cycle is stopped (S8).

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、冷凍サイクルの運
転状態により冷蔵室への冷気供給を制御する冷蔵庫に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator for controlling the supply of cold air to a refrigerator according to the operating state of a refrigeration cycle.

【０００２】[0002]

【発明が解決しようとする課題】図９は、冷蔵庫に用い
られる冷凍サイクルである。圧縮機１が起動することに
より吐出された高温・高圧の冷媒は、蒸発パイプ３，放
熱パイプ５，凝縮器７，クリーンパイプ９で放熱し液化
され低温状態となる。その後、ドライヤ１１により水分
等を除去した後、メインキャピラリチューブ１３により
冷媒は減圧され低圧となる。低温・低圧の冷媒は蒸発器
１５で気化され、吸熱し圧縮機１に戻る。また、圧縮機
１上流側には、冷媒が液状態で圧縮機１に戻るを防止す
るために、液溜め部としてアキュームレータ１７が設け
られており、これら構成により密閉サイクルを形成して
いる。FIG. 9 shows a refrigeration cycle used in a refrigerator. The high-temperature and high-pressure refrigerant discharged when the compressor 1 is started is radiated by the evaporating pipe 3, the radiating pipe 5, the condenser 7, and the clean pipe 9 to be liquefied and brought into a low temperature state. Thereafter, after the moisture and the like are removed by the dryer 11, the pressure of the refrigerant is reduced by the main capillary tube 13 to a low pressure. The low-temperature and low-pressure refrigerant is vaporized in the evaporator 15, absorbs heat, and returns to the compressor 1. An accumulator 17 is provided on the upstream side of the compressor 1 as a liquid reservoir in order to prevent the refrigerant from returning to the compressor 1 in a liquid state, and these components form a closed cycle.

【０００３】図１０は上記冷凍サイクルを備えた冷蔵庫
である。また、図１１は一般的な冷蔵庫の断面図であ
る。冷蔵庫本体１９には、上方より冷蔵室２１，冷凍室
２３及び野菜室２５が前面開口部を有して仕切壁２７
ａ，２７ｂにより区画され、内部にポリウレタンフォー
ムの断熱材が発泡充填され断熱箱体を形成している。ま
た、前面開口部には、それぞれ、扉２９，３１ａ，３１
ｂ及び３３が開閉自在に設けられており、上段に位置す
る冷蔵室扉２９は回転式，中段及び下段に位置する冷凍
室扉３１ａ，３１ｂ及び野菜室扉３３は引き出し式とな
っている。FIG. 10 shows a refrigerator provided with the above-mentioned refrigerating cycle. FIG. 11 is a sectional view of a general refrigerator. In the refrigerator body 19, a refrigerator compartment 21, a freezer compartment 23, and a vegetable compartment 25 have a front opening from the upper side and a partition wall 27.
a, 27b, and a polyurethane foam heat insulating material is foam-filled therein to form a heat insulating box. Also, doors 29, 31a, 31 are respectively provided in the front openings.
The upper and lower refrigerator compartment doors 29 are rotatable, and the middle and lower freezer compartment doors 31a and 31b and the vegetable compartment door 33 are of a drawer type.

【０００４】圧縮機１は、冷蔵庫本体１９下方の野菜室
２５裏面に断熱壁を介して形成された機械室３５に設け
られている。蒸発パイプ３は、圧縮機１上方に設けられ
た蒸発皿３７に位置し、蒸発皿３７には、後述する除霜
ヒータ３９による加熱により蒸発器１５に付着した霜が
融解され水となって溜められる。即ち、蒸発パイプ３及
び圧縮機１起動時の熱により蒸発皿３７内の水を蒸発促
進させている。[0004] The compressor 1 is provided in a machine room 35 formed on the back surface of the vegetable room 25 below the refrigerator body 19 via a heat insulating wall. The evaporating pipe 3 is located on an evaporating dish 37 provided above the compressor 1, and the frost adhering to the evaporator 15 is melted and stored as water in the evaporating dish 37 by heating by a defrost heater 39 described later. Can be That is, the water in the evaporating dish 37 is promoted by the heat generated when the evaporating pipe 3 and the compressor 1 are started.

【０００５】また、クリーンパイプ９は、冷蔵庫本体１
９の開口部周縁となる断熱仕切壁２７ａ，２７ｂ及び仕
切部４１前面断熱材側に設け、冷蔵庫本体１９の外側表
面４２への露付きを防止している。（以下防露パイプ９
とする。） 蒸発器１５は、冷凍室２３奥方に蒸発器カバー４３で区
画された冷却器室４５に設けられている。蒸発器１５上
方には送風ファン４７が設けられ、蒸発器カバー４３上
方に設けた冷気供給口４９から冷凍室２３内に冷気が供
給される。送風ファン４７により冷凍室２３内に供給さ
れた冷気は、冷凍室底板（断熱仕切壁２７ｂ）に設けら
れた冷凍室冷気戻り口５０ａから冷凍室戻りダクト５０
を通り冷却器室４５下方に戻る。[0005] The clean pipe 9 is connected to the refrigerator body 1.
The heat insulating partition walls 27a and 27b serving as the periphery of the opening 9 and the heat insulating material on the front surface of the partition 41 prevent the dew on the outer surface 42 of the refrigerator body 19 from being exposed. (Hereafter, dew-proof pipe 9
And The evaporator 15 is provided in a cooler room 45 partitioned by an evaporator cover 43 at the back of the freezing room 23. A blower fan 47 is provided above the evaporator 15, and cool air is supplied into the freezing compartment 23 from a cool air supply port 49 provided above the evaporator cover 43. The cool air supplied into the freezer compartment 23 by the blower fan 47 passes through a freezer compartment return duct 50a provided in the freezer compartment bottom plate (insulated partition wall 27b).
And returns to below the cooler room 45.

【０００６】以上、冷気循環作用により、冷凍室２３は
冷却される。また、冷蔵室２１内の温度制御は冷蔵室２
１奥方下部に設けた冷蔵室ダンパ５１（以下Ｒダンパ）
を開閉することにより行う。冷蔵室２１には冷蔵室内の
温度を検知する冷蔵室温度センサ５３（以下Ｒ温度セン
サ）が設けられており、冷蔵室内が冷却され、Ｒ温度セ
ンサにより検知した冷蔵室内の温度が冷蔵室ダンパ閉設
定温度（以下Ｒダンパ閉設定温度）以下の時は、Ｒダン
パ５１を閉成し、冷蔵室内の温度が上昇し、冷蔵室ダン
パ開設定温度（以下Ｒダンパ開設定温度）以上の時は、
Ｒダンパ５１は開とする。As described above, the freezing compartment 23 is cooled by the cool air circulation operation. The temperature of the refrigerator compartment 21 is controlled by the refrigerator compartment 2.
1 Refrigerator compartment damper 51 (hereinafter referred to as R damper) provided at the lower part in the back
By opening and closing. The refrigerating compartment 21 is provided with a refrigerating compartment temperature sensor 53 (hereinafter referred to as an R temperature sensor) for detecting the temperature in the refrigerating compartment. The refrigerating compartment is cooled, and the temperature in the refrigerating compartment detected by the R temperature sensor is closed by the refrigerating compartment damper. When the temperature is equal to or lower than the set temperature (hereinafter referred to as the R damper closed set temperature), the R damper 51 is closed, and the temperature in the refrigerator compartment increases, and when the temperature is equal to or higher than the refrigerator room damper open set temperature (hereinafter referred to as the R damper open set temperature),
The R damper 51 is opened.

【０００７】Ｒダンパ５１開時、冷気は、冷蔵室２１背
面に形成されたダクト５４に導かれ、ダクト５４に形成
した吹出口５４ａから冷蔵室２１内に均一に供給され
る。冷蔵室２１内を冷却した冷気は、冷蔵室底板（断熱
仕切壁２７ａ）に設けた冷蔵室冷気戻り口（図示せず）
から冷却器室４５側方に断熱区画した野菜室冷気導入路
（図示せず）を通り野菜室２５内に導かれる。その後、
冷気は、野菜室２５天井部（断熱仕切壁２７ｂ）に設け
た野菜室冷気戻り口５５ａから野菜室冷気戻りダクト５
５を通り冷却器室４５に戻る。When the R damper 51 is opened, the cool air is guided to a duct 54 formed on the back of the refrigerator compartment 21 and is uniformly supplied into the refrigerator compartment 21 from an outlet 54 a formed in the duct 54. The cool air that has cooled the inside of the refrigerator compartment 21 is supplied to a refrigerator compartment cool air return port (not shown) provided in the refrigerator compartment bottom plate (insulated partition wall 27a).
From there, it is led into the vegetable room 25 through a vegetable room cold air introduction passage (not shown) which is insulated and partitioned to the side of the cooler room 45. afterwards,
The cool air is supplied from the vegetable room cool air return port 55a provided on the ceiling of the vegetable room 25 (insulated partition wall 27b) to the vegetable room cool air return duct 5.
5 and return to the cooler room 45.

【０００８】冷凍室２３内に設けた冷凍室温度センサ５
６（以下Ｆ温度センサ）により検知した冷凍室内温度が
冷却運転を必要とする温度（以下Ｆ冷却運転設定温度）
（例えば−２０℃）以上の時は、圧縮機１を起動し冷却
運転を行うとともに、冷蔵室温度センサ５３により検知
した冷蔵室内温度がＲダンパ開設定温度（例えば３℃）
以上の時は、Ｒダンパ５１を開となり、冷蔵室２１に冷
気を供給する。Ｒ温度センサ５３がＲダンパ閉設定温度
（例えば５℃）以下に達すると、Ｒダンパ５１は閉成
し、冷凍室２３のみ冷気が供給されるようになる。その
後、冷凍室２３は冷却されＦ温度センサ５６がＦ冷却停
止設定温度（例えば−２３℃）以下に達すると、圧縮機
１の運転を停止する。The freezer compartment temperature sensor 5 provided in the freezer compartment 23
6 (hereinafter referred to as the F temperature sensor) is the temperature at which the freezing room requires cooling operation (hereinafter referred to as the F cooling operation set temperature).
When the temperature is equal to or higher than (eg, −20 ° C.), the compressor 1 is started to perform a cooling operation, and the temperature of the refrigerator compartment detected by the refrigerator compartment temperature sensor 53 is set to the R damper open set temperature (eg, 3 ° C.)
In the above case, the R damper 51 is opened, and cool air is supplied to the refrigerator compartment 21. When the R temperature sensor 53 reaches the R damper closing set temperature (for example, 5 ° C.) or lower, the R damper 51 closes, and only the freezing compartment 23 is supplied with cool air. Thereafter, when the freezing room 23 is cooled and the F temperature sensor 56 reaches the F cooling stop set temperature (for example, −23 ° C.) or less, the operation of the compressor 1 is stopped.

【０００９】以上説明したように、冷蔵庫１９の各貯蔵
室は所定温度に冷却される。しかしながら、上記のよう
に、圧縮機１の運転・停止を冷凍室内温度で行い、Ｒダ
ンパ５１の開閉を冷蔵室２１の各貯蔵室内温度検知によ
り行うと、多くの場合、冷蔵室２１がＲダンパ閉設定温
度まで冷却された後、冷凍室２３がＦ冷却停止設定温度
まで冷却され、その後、圧縮機１の運転を停止する。従
って、この運転停止前は、冷凍室２３のみで熱交換され
ることが多くなり、蒸発器１５での吸熱量が低下し、圧
縮機１への戻り冷媒液化（液バック）による信頼性悪
化、或いは防露パイプ９の温度低下による冷蔵庫本体開
口部周縁の外側表面へ露が付くという問題点があった。As described above, each storage room of the refrigerator 19 is cooled to a predetermined temperature. However, as described above, when the operation and stop of the compressor 1 are performed at the freezing room temperature and the opening and closing of the R damper 51 are performed by detecting the temperature of each storage room of the refrigerator compartment 21, the refrigerating room 21 often becomes the R damper. After being cooled to the closed set temperature, the freezing compartment 23 is cooled to the F cooling stop set temperature, and then the operation of the compressor 1 is stopped. Therefore, before this operation is stopped, heat exchange is often performed only in the freezer compartment 23, the amount of heat absorbed in the evaporator 15 is reduced, and the reliability is deteriorated due to the refrigerant liquefaction (liquid back) returned to the compressor 1. Alternatively, there is a problem in that dew adheres to the outer surface of the periphery of the opening of the refrigerator body due to a decrease in the temperature of the dew prevention pipe 9.

【００１０】また、上記のような冷凍サイクルにおいて
は、蒸発器１５への除霜のため、蒸発器１５下方に除霜
ヒータ３９が設けられており、圧縮機１の運転積算時間
等、所定条件を満たすと除霜ヒータ３９により加熱運転
を行う。除霜が終了したと判断できる位置、例えばアキ
ュームレータ１７等に除霜終了検知センサ（図示せず）
が設けられており、この除霜終了検知センサが所定温度
以上になると蒸発器１５に付着した霜が融解されたと判
断し除霜運転を終了する。この除霜運転では、貯蔵室内
の温度が上昇するので、各貯蔵室内の温度上昇を小さく
抑えるために除霜加熱運転開始前に一定時間冷却運転
（以下プリクール）を行っている。In the above-described refrigeration cycle, a defrost heater 39 is provided below the evaporator 15 for defrosting the evaporator 15. When the condition is satisfied, the heating operation is performed by the defrost heater 39. Defrosting completion detection sensor (not shown) at a position where it can be determined that the defrosting has been completed, for example, at the accumulator 17 or the like.
When the defrost end detection sensor reaches a predetermined temperature or higher, it is determined that the frost attached to the evaporator 15 has been melted, and the defrosting operation is terminated. In this defrosting operation, since the temperature in the storage room rises, a cooling operation (hereinafter referred to as precool) is performed for a certain period of time before the start of the defrosting heating operation in order to keep the temperature increase in each storage room small.

【００１１】以上のような除霜運転前のプリクール運転
によっても、このプリクール運転終了付近になると冷蔵
室２１は既に冷却され、冷凍室２３のみと熱交換される
こととなり、蒸発器１５の吸熱量が低下し液バック現象
が生じる。これにより、アキュームレータ１７に溜まる
液冷媒の量が増加するため、そのアキュームレータ１７
に取り付けられた除霜終了検知センサは追従性が悪化
し、除霜運転の終了が遅延するため、貯蔵室内の温度上
昇や無駄な電力消費が生じるという問題点があった。Even in the precooling operation before the defrosting operation as described above, the refrigerator compartment 21 is already cooled and heat exchanges with only the freezing compartment 23 near the end of the precooling operation. And the liquid back phenomenon occurs. As a result, the amount of liquid refrigerant accumulated in the accumulator 17 increases, and
The defrosting end detection sensor attached to the storage unit has a problem that the followability is deteriorated and the end of the defrosting operation is delayed, so that the temperature in the storage room rises and wasteful power consumption occurs.

【００１２】更に、除霜運転終了後においては、貯蔵室
内の温度が上昇しているため、圧縮機１を起動し冷却運
転を行う。このとき、冷蔵室２１の温度が上昇している
ため、Ｒダンパ５１は開となる。Further, after the completion of the defrosting operation, since the temperature in the storage room has risen, the compressor 1 is started to perform the cooling operation. At this time, since the temperature of the refrigerator compartment 21 has risen, the R damper 51 is opened.

【００１３】上述のように、除霜運転終了後の圧縮機１
起動時、蒸発器１５は温度上昇している冷蔵室２１及び
冷凍室２３内の冷気と熱交換しているため、圧縮機への
吸い込み圧力が上昇し、最悪の場合、圧縮機が起動不良
になる虞れがある。As described above, the compressor 1 after the completion of the defrosting operation
At the time of startup, the evaporator 15 exchanges heat with the cold air in the refrigerator compartment 21 and the freezer compartment 23 whose temperature is rising, so that the suction pressure into the compressor increases, and in the worst case, the compressor fails to start. There is a risk of becoming.

【００１４】また、Ｒダンパ５１をＲ温度センサ５３で
のみ制御していたため、冷蔵室扉２９開時の冷気漏れ
は、送風ファン４７の運転を停止することにより行って
いた。しかしながら、上記の場合、冷気漏れは抑制でき
るものの、送風ファン４７を停止させているため、蒸発
器１５への吸熱量が低下し、長時間の場合には液バック
現象が生じるという問題点があった。Further, since the R damper 51 is controlled only by the R temperature sensor 53, the cold air leakage when the refrigerator compartment door 29 is opened is performed by stopping the operation of the blower fan 47. However, in the above case, although the cool air leakage can be suppressed, since the blower fan 47 is stopped, the amount of heat absorbed by the evaporator 15 decreases, and there is a problem that the liquid back phenomenon occurs in a long time. Was.

【００１５】上述したように従来の冷蔵庫では、冷蔵室
のダンパ開閉を冷蔵室内温度により行っていたため、圧
縮機停止時の防露パイプ温度低下による露付き現象，圧
縮機の起動不良等の問題点があった。そこで、本発明は
上記欠点を除去し、露付きを防止し、圧縮機の起動性向
上を図ることを目的とする。As described above, in the conventional refrigerator, since the opening and closing of the damper of the refrigerator compartment is performed based on the temperature of the refrigerator compartment, there are problems such as a dew phenomenon due to a decrease in the temperature of the dew-prevention pipe when the compressor is stopped, and a failure in starting the compressor. was there. Therefore, an object of the present invention is to eliminate the above-mentioned disadvantages, prevent dew sticking, and improve the startability of the compressor.

【００１６】[0016]

【課題を解決するための手段】上記目的を達成するため
に本発明の冷蔵庫では、圧縮機，凝縮器，キャピラリチ
ューブ及び蒸発器等からなる冷凍サイクルと、この冷凍
サイクルにより冷却された冷気を送風手段により冷凍室
及び冷蔵室等の貯蔵室に循環し冷却を行う冷蔵庫におい
て、前記冷凍室内の温度を検知する冷凍室温度検知手段
と、前記冷蔵室内の温度を検知する冷蔵室温度検知手段
と、この冷蔵室内温度検知手段に基づいて前記冷蔵室内
への冷気流入を制御するダンパとを備え、前記冷蔵室内
が冷却されると前記ダンパを閉とするダンパ閉設定温度
及び前記冷蔵室内温度が上昇すると前記ダンパを開とす
るダンパ開設定温度を設定するダンパ開閉温度設定手段
と、前記ダンパは前記冷蔵室内温度が前記ダンパ閉設定
温度＋Ｘ℃で閉とし、前記冷凍室内温度が冷凍室設定温
度以下になると前記ダンパを開とするとともに、前記冷
蔵室内温度が前記ダンパ閉設定温度に以下になると前記
ダンパを閉成し、前記圧縮機の運転を停止することを特
徴としている。According to the present invention, there is provided a refrigerator according to the present invention comprising: a refrigeration cycle including a compressor, a condenser, a capillary tube, an evaporator, and the like; In a refrigerator that circulates and cools a storage room such as a freezing room and a refrigerator room by means, a freezing room temperature detecting unit that detects a temperature in the freezing room, and a refrigerator room temperature detecting unit that detects a temperature in the freezing room, A damper for controlling inflow of cold air into the refrigerator based on the refrigerator temperature detection means, wherein when the refrigerator compartment is cooled, the damper closing set temperature for closing the damper and the refrigerator compartment temperature rise. Damper opening / closing temperature setting means for setting a damper opening set temperature for opening the damper; and the damper is closed when the refrigerator compartment temperature is equal to the damper closed set temperature + X ° C. When the freezing room temperature falls below the freezing room set temperature, the damper is opened, and when the refrigerator room temperature falls below the damper closed set temperature, the damper is closed, and the operation of the compressor is stopped. It is characterized by:

【００１７】また、圧縮機，凝縮器，キャピラリチュー
ブ及び蒸発器等からなる冷凍サイクルと、この冷凍サイ
クルにより冷却された冷気を冷凍室及び冷蔵室等の貯蔵
室に循環し冷却を行う送風手段と、前記冷凍室内の温度
を検知する冷凍室温度検知手段と、前記冷蔵室内の温度
を検知する冷蔵室温度検知手段と、前記圧縮機の運転を
停止し、前記蒸発器等に付着した霜を加熱融解する除霜
用加熱手段と、この除霜用加熱手段による加熱開始条件
を設定する除霜開始条件設定手段と、前記圧縮機起動時
からの運転時間をカウントするタイマと、前記除霜開始
条件設定手段により設定された条件を満たすと、前記タ
イマにより所定時間前記貯蔵室内を冷却するプリクール
運転を行い、このプリクール運転終了後、前記除霜用加
熱手段により除霜加熱を行う冷蔵庫において、前記冷蔵
室内温度検知手段に基づいて前記冷蔵室内への冷気流入
を制御するダンパを備え、前記タイマによりプリクール
運転終了Ｙ分前から前記所定時間までは、前記ダンパを
開とすることを特徴としている。Also, a refrigeration cycle including a compressor, a condenser, a capillary tube, an evaporator, and the like, and blowing means for circulating cool air cooled by the refrigeration cycle to storage rooms such as a freezing room and a refrigerator room for cooling. A freezing compartment temperature detecting means for detecting the temperature in the freezing chamber, a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerator compartment, and stopping the operation of the compressor to heat the frost adhering to the evaporator and the like. A defrosting heating means for melting, a defrosting start condition setting means for setting a heating start condition by the defrosting heating means, a timer for counting an operation time from the start of the compressor, and the defrosting start condition When the condition set by the setting means is satisfied, a precool operation for cooling the storage chamber for a predetermined time by the timer is performed, and after the completion of the precool operation, defrosting is performed by the defrost heating means. In the refrigerator that performs heat, a damper that controls the flow of cold air into the refrigerator compartment based on the refrigerator compartment temperature detection means is provided, and the timer is opened by the timer for a predetermined time from Y minutes before the end of the precool operation to the predetermined time. It is characterized by doing.

【００１８】更に、圧縮機，凝縮器，キャピラリチュー
ブ及び蒸発器等からなる冷凍サイクルと、この冷凍サイ
クルにより冷却された冷気を冷凍室及び冷蔵室等の貯蔵
室に循環し冷却を行う送風手段と、前記冷凍室内の温度
を検知する冷凍室温度検知手段と、前記冷蔵室内の温度
を検知する冷蔵室温度検知手段と、前記圧縮機の運転を
停止し、前記蒸発器等に付着した霜を加熱融解する除霜
用加熱手段と、この除霜用加熱手段の開始条件を設定す
る除霜開始条件設定手段と、前記圧縮機起動時からの運
転時間をカウントするタイマを備え、前記除霜開始条件
設定手段により設定された条件を満たすと、前記タイマ
により所定時間前記貯蔵室内を冷却するプリクール運転
を行い、このプリクール運転終了後、前記除霜用加熱手
段により除霜加熱を行う冷蔵庫において、前記冷蔵室内
温度検知手段に基づいて前記冷蔵室内への冷気流入を制
御するダンパを備え、前記除霜用加熱手段による加熱運
転終了後、前記タイマが前記圧縮機再起動後の所定時間
をカウントするまで前記ダンパを閉成することを特徴と
している。Further, a refrigerating cycle comprising a compressor, a condenser, a capillary tube, an evaporator and the like, and a blowing means for circulating cool air cooled by the refrigerating cycle to a storage room such as a freezing room and a refrigerating room for cooling. A freezing compartment temperature detecting means for detecting the temperature in the freezing chamber, a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerator compartment, and stopping the operation of the compressor to heat the frost adhering to the evaporator and the like. A defrosting heating means for melting, a defrosting start condition setting means for setting a start condition of the defrosting heating means, and a timer for counting an operation time from the start of the compressor; When the condition set by the setting unit is satisfied, a precool operation for cooling the storage room for a predetermined time by the timer is performed, and after the precool operation is completed, the defrost heating unit is used by the defrost heating unit. The refrigerator includes a damper for controlling the flow of cold air into the refrigerator based on the refrigerator temperature detection means, and after the heating operation by the defrosting heating means is completed, the timer sets the predetermined time after the compressor is restarted. The damper is closed until the time is counted.

【００１９】その上、圧縮機，凝縮器，キャピラリチュ
ーブ及び蒸発器等からなる冷凍サイクルと、この冷凍サ
イクルにより冷却された冷気を送風手段により冷凍室及
び冷蔵室等の貯蔵室に循環し冷却を行う冷蔵庫におい
て、前記冷凍室内の温度を検知する冷凍室温度検知手段
と、前記冷蔵室内の温度を検知する冷蔵室温度検知手段
と、この冷蔵室内温度検知手段に基づいて前記冷蔵室内
への冷気流入を制御するダンパと、前記冷蔵室の扉開閉
を検知する冷蔵室扉開閉検知手段とを備え、前記冷凍サ
イクル運転時、前記冷蔵室扉の開状態を検知すると、前
記ダンパを閉成するとともに前記送風手段を運転するこ
とを特徴としている。In addition, a refrigeration cycle including a compressor, a condenser, a capillary tube, an evaporator, and the like, and cool air cooled by the refrigeration cycle are circulated to storage rooms such as a freezer room and a refrigerator room by a blowing means for cooling. In the refrigerator to be performed, a freezer compartment temperature detecting means for detecting the temperature in the freezer compartment, a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerator compartment, and cold air flowing into the refrigerator compartment based on the refrigerator compartment temperature detecting means. And a refrigerating compartment door open / close detecting means for detecting the refrigerating compartment door opening / closing detecting means for detecting opening / closing of the refrigerating compartment door. It is characterized by operating the blowing means.

【００２０】[0020]

【発明の実施の形態】本実施例では、従来と同一部分は
説明を省略し、異なる部分についてのみ詳細に説明す
る。図１は本発明の第１の実施例に係るフローチャート
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present embodiment, the description of the same parts as in the prior art will be omitted, and only different parts will be described in detail. FIG. 1 is a flowchart according to the first embodiment of the present invention.

【００２１】扉開等により冷凍室２３内温度が上昇し、
Ｆ温度センサ５６によりＦ冷却運転設定温度以上と検知
すると、圧縮機１を起動（ＯＮ）し冷却運転を開始す
る。（ステップ１）（以下Ｓ１，Ｓ２．．．） 冷蔵室２１内の温度は、Ｒダンパ閉設定温度はＸ℃（約
２〜３℃）高く設定したＲダンパ閉設定温度＋Ｘ℃とし
て、Ｒダンパ５１を制御し冷却される。即ち、Ｒダンパ
５１から導かれる冷気は、冷蔵室２１内奥方背面部に設
けたダクト５４から吹出口５４ａを介して冷気が供給さ
れる。冷蔵室内が冷却され、Ｒダンパ閉設定温度＋Ｘ℃
以下になればＲダンパ５１を閉成する（Ｓ２，Ｓ３，Ｓ
４）。When the door is opened, the temperature in the freezer compartment 23 rises,
When the F temperature sensor 56 detects that the temperature is equal to or higher than the F cooling operation set temperature, the compressor 1 is started (ON) and the cooling operation is started. (Step 1) (hereinafter S1, S2...) The temperature inside the refrigerator compartment 21 is set as R damper closed set temperature + X ° C. which is set higher by R ° C. (about 2-3 ° C.). 51 is controlled and cooled. That is, the cool air guided from the R damper 51 is supplied from the duct 54 provided at the back inside the refrigerator compartment 21 through the outlet 54a. The refrigerator compartment is cooled and the R damper closed set temperature + X ° C
When the following conditions are satisfied, the R damper 51 is closed (S2, S3, S
4).

【００２２】Ｒダンパ５１が閉成すると冷凍室２３にの
み冷気が供給され、冷凍室２３内の温度は低下する。冷
凍室２３がＦ冷却停止設定温度以下まで低下すると、Ｒ
ダンパ５１を開とし冷蔵室２１内に冷気が供給される
（Ｓ５，Ｓ６）。冷蔵室２１内が冷却されＲ温度センサ
５３がＲダンパ閉設定温度に達すると（Ｓ７）、冷凍サ
イクル運転を停止する（圧縮機１を停止する）（Ｓ
８）。When the R damper 51 is closed, cool air is supplied only to the freezing room 23, and the temperature in the freezing room 23 decreases. When the temperature of the freezing compartment 23 drops below the F cooling stop set temperature, R
The damper 51 is opened to supply cool air into the refrigerator compartment 21 (S5, S6). When the inside of the refrigerator compartment 21 is cooled and the R temperature sensor 53 reaches the R damper closed set temperature (S7), the refrigeration cycle operation is stopped (the compressor 1 is stopped) (S7).
8).

【００２３】図２は、第１の実施例に係るタイミングチ
ャートを示している。本実施例及び以下他の実施例に示
されるタイミングチャートでは、従来と本願と異なる部
分は波線及び実線とにより区別図示している。FIG. 2 shows a timing chart according to the first embodiment. In the timing charts shown in this embodiment and other embodiments below, portions different from the related art from the present application are distinguished by wavy lines and solid lines.

【００２４】図２中波線で示されるように、従来は、Ｒ
ダンパ５１閉成（図２中（Ａ）（Ｂ）間）により冷凍室
２３冷却中、防露パイプ９の温度は低下する。その後、
冷凍室２３内がＦ冷却停止設定温度まで冷却されると、
圧縮機１は停止し、更に防露パイプ９の温度は低下す
る。As shown by the dashed line in FIG.
When the damper 51 is closed (between (A) and (B) in FIG. 2), the temperature of the dew-proof pipe 9 decreases during the cooling of the freezing compartment 23. afterwards,
When the inside of the freezer 23 is cooled to the F cooling stop set temperature,
The compressor 1 stops, and the temperature of the dew-proof pipe 9 further decreases.

【００２５】これに対し、本実施例は実線で示されるよ
うに冷蔵室２１がＲダンパ閉設定温度＋Ｘ℃まで冷却さ
れた時点でＲダンパ５１を閉成している。このＲダンパ
５１閉成中（図中（Ａ）’（Ｂ）’間）は、従来と比較
し防露パイプ９の温度は若干低下する。Ｒダンパ５１閉
成中は冷凍室２３が冷却される。冷凍室２３内が冷却さ
れＦ冷却停止設定温度に達すると、Ｒダンパ５１を開と
し冷蔵室２１へ冷気を供給する。この時、蒸発器１５は
冷蔵室内の冷気とも熱交換されるため吸熱量が増加し、
防露パイプ９の温度が上昇する。On the other hand, in the present embodiment, as shown by the solid line, the R damper 51 is closed when the refrigerator compartment 21 is cooled to the R damper closed set temperature + X ° C. While the R damper 51 is closed (between (A) and (B) 'in the figure), the temperature of the dew-proof pipe 9 is slightly lower than in the conventional case. While the R damper 51 is closed, the freezing room 23 is cooled. When the inside of the freezing compartment 23 is cooled and reaches the F-cooling stop set temperature, the R damper 51 is opened and cool air is supplied to the refrigerator compartment 21. At this time, since the evaporator 15 also exchanges heat with cold air in the refrigerator compartment, the amount of heat absorbed increases,
The temperature of the dew prevention pipe 9 rises.

【００２６】従って、（Ａ）’（Ｂ）’間では、防露パ
イプ９の温度は従来と比較し温度が低下しているが、従
来高温状態であったことから、本低下量は問題のない露
付き防止を行える温度を維持している。Therefore, between (A) and (B) ', the temperature of the dew-proof pipe 9 is lower than that of the conventional one. Maintain a temperature that can prevent dew condensation.

【００２７】（Ｂ）’以降では、Ｒダンパ５３を開とし
ているため、蒸発器１５の吸熱量が増加し防露パイプ９
の温度が上昇する。その後、冷蔵室２１が冷却され圧縮
機１を停止した際、防露パイプ９の温度は低下するが、
圧縮機１停止前、防露パイプ９の温度を上昇させている
ため、露付きに至る温度まで低下することはない。After (B) ′, since the R damper 53 is opened, the amount of heat absorbed by the evaporator 15 increases and the
Temperature rises. Thereafter, when the refrigerator compartment 21 is cooled and the compressor 1 is stopped, the temperature of the dew prevention pipe 9 decreases,
Before the compressor 1 is stopped, the temperature of the dew-proof pipe 9 is raised, so that the temperature does not drop to the temperature at which dew is formed.

【００２８】以上のように、圧縮機１停止前は、蒸発器
１５は冷蔵室内冷気と熱交換させているため、冷媒の気
化がすすみ、圧縮機１への液バック及び防露パイプ９の
温度低下を防止することができる。As described above, before the compressor 1 is stopped, since the evaporator 15 exchanges heat with the cold air in the refrigerator compartment, the vaporization of the refrigerant proceeds, and the temperature of the liquid back to the compressor 1 and the temperature of the dew prevention pipe 9 are increased. The drop can be prevented.

【００２９】また、冷蔵室内が冷却され、冷蔵室内温度
がＲダンパ閉設定温度以下になる前（Ｒダンパ閉設定温
度＋Ｘ℃）でＲダンパ５１を閉じているが、冷凍室２３
を冷却後、再度Ｒダンパ５１を開としＲダンパ閉設定温
度に達するまで冷蔵室２１内に冷気を供給し冷却してい
るため、温度ムラの影響も少ない。Further, the R damper 51 is closed before the refrigerator compartment is cooled and the temperature of the refrigerator compartment becomes equal to or lower than the R damper closed set temperature (R damper closed set temperature + X ° C.).
After cooling, the R damper 51 is opened again to supply cool air into the refrigerating chamber 21 until the temperature reaches the R damper closed set temperature, thereby reducing the influence of temperature unevenness.

【００３０】次に第２の実施例について説明する。図３
は本発明の第２の実施例に係るフローチャートである。
除霜運転は、蒸発器１５に所定の着霜がなされたことを
判断する基準として、圧縮機運転積算時間が所定時間に
達する等の開始条件が設定されており、この開始条件を
満たすと、除霜運転は開始される。除霜運転は除霜ヒー
タ３９による加熱運転のため、冷凍室２３等の貯蔵室内
の温度が上昇する。除霜運転終了時の貯蔵室内の温度上
昇を防止するため、除霜運転前にプリクール運転を行
う。Next, a second embodiment will be described. FIG.
9 is a flowchart according to a second embodiment of the present invention.
In the defrosting operation, a start condition such as a compressor operation integrated time reaching a predetermined time is set as a criterion for determining that a predetermined frost is formed on the evaporator 15, and when the start condition is satisfied, The defrosting operation is started. Since the defrosting operation is a heating operation by the defrost heater 39, the temperature in the storage room such as the freezing room 23 rises. A pre-cool operation is performed before the defrost operation in order to prevent a rise in the temperature in the storage room at the end of the defrost operation.

【００３１】一般に除霜終了の検知は、着霜する蒸発器
１５の温度が除霜終了設定温度以上に達したかどうかで
判断する。本実施例の冷蔵庫のように、蒸発器１５下方
に除霜ヒータ３９を備える冷蔵庫においては、蒸発器１
５をほぼ完全に除霜させるため、除霜ヒータ３９の遠方
となる蒸発器１５上方、例えばアキュームレータ１７に
除霜終了を検知する除霜終了検知センサ（図示せず）が
取り付けられている。Generally, the detection of the end of defrosting is determined by whether or not the temperature of the evaporator 15 to be frosted has reached a temperature equal to or higher than the defrosting end set temperature. In a refrigerator having a defrost heater 39 below the evaporator 15 as in the refrigerator of the present embodiment, the evaporator 1
In order to almost completely defrost 5, a defrost end detection sensor (not shown) for detecting the end of defrost is attached to the evaporator 15 above the defrost heater 39, for example, to the accumulator 17.

【００３２】上記プリクール運転は、所定時間冷却を行
う時間制御式と、冷凍室内の温度が所定温度に到達され
れば終了する温度制御式のもの等がある。本実施例で
は、時間制御（Ｔ分）（例えば３２分）によるプリクー
ル運転を用いた場合について説明する。The pre-cooling operation includes a time control type for cooling for a predetermined time and a temperature control type for ending when the temperature in the freezing chamber reaches a predetermined temperature. In the present embodiment, a case will be described in which a precool operation by time control (T minutes) (for example, 32 minutes) is used.

【００３３】圧縮機１運転積算時間が所定時間に達する
と、プリクール運転が開始される（Ｓ１）。この時、タ
イマをスタートさせプリクール運転時間をカウントする
（Ｓ２）。冷蔵室内温度がＲダンパ閉設定温度以下かど
うか判断し（Ｓ３）、Ｒダンパ閉設定温度以下の場合は
Ｒダンパ５１を閉成し（Ｓ４）、Ｒダンパ開設定温度よ
り高くなった場合はＲダンパ５１を開とする（Ｓ５）。When the cumulative operation time of the compressor 1 reaches a predetermined time, a precool operation is started (S1). At this time, the timer is started and the precool operation time is counted (S2). It is determined whether the refrigerator compartment temperature is equal to or lower than the R damper closed set temperature (S3). If the temperature is equal to or lower than the R damper closed set temperature, the R damper 51 is closed (S4). The damper 51 is opened (S5).

【００３４】上記Ｓ３乃至Ｓ５は、プリクール終了Ｙ分
前（例えば５分）、すなわちプリクール運転開始から
（Ｔ−Ｙ）分（２７分）経過するまで繰り返される。
（Ｓ６）プリクール運転終了Ｙ分前になるとＲダンパ５
１は開とし、Ｒダンパ５１開後５分（プリクール運転開
始から３２分）経過すると、圧縮機１を停止し、除霜運
転を開始する。（Ｓ７，Ｓ８，Ｓ９，Ｓ１０） 図４は、第２の実施例に係るタイミングチャートであ
り、図中実線で示されるように、プリクール運転終了５
分前にＲダンパ５１を開とすることにより、防露パイプ
の９温度が上昇し、圧縮機１停止時の防露パイプ９の温
度低下を防止している。Steps S3 to S5 are repeated Y minutes before the end of the precooling (for example, 5 minutes), that is, until (T−Y) minutes (27 minutes) have elapsed since the start of the precooling operation.
(S6) R damper 5 Y minutes before the end of precool operation
1 is open, and after 5 minutes (32 minutes from the start of the precool operation) after the R damper 51 is opened, the compressor 1 is stopped and the defrosting operation is started. (S7, S8, S9, S10) FIG. 4 is a timing chart according to the second embodiment. As shown by a solid line in FIG.
By opening the R damper 51 minutes before, the temperature of the dew-proof pipe 9 rises to prevent the temperature of the dew-proof pipe 9 from decreasing when the compressor 1 stops.

【００３５】以上のように、圧縮機１停止前、Ｒダンパ
５１を開とすることにより蒸発器１５は冷蔵室２１内と
も熱交換しているため、吸熱量が増加し防露パイプ９の
温度が上昇するため、冷蔵庫本体１９開口部周縁の外側
表面４２への露付きを防止することができる。As described above, since the R damper 51 is opened before the compressor 1 is stopped, the evaporator 15 exchanges heat with the inside of the refrigerator compartment 21, so that the heat absorption increases and the temperature of the dew prevention pipe 9 increases. , The dew on the outer surface 42 of the periphery of the opening of the refrigerator body 19 can be prevented.

【００３６】また、本実施例のように、アキュームレー
タ１７に除霜終了検知センサを取り付けるものにおいて
は、液バックによるセンサの追従性悪化を防止すること
ができるので、貯蔵室内のムダな温度上昇を防止し、省
電力化を図ることができる。In the case where the defrosting end detecting sensor is attached to the accumulator 17 as in the present embodiment, it is possible to prevent the follow-up of the sensor from being deteriorated due to the liquid back. Prevention and power saving can be achieved.

【００３７】図５は本願発明の第３の実施例に係るフロ
ーチャートである。本実施例は、除霜終了後の動作に関
するものである。除霜終了温度センサにより除霜終了設
定温度以上に達すると、除霜終了と判断し、Ｒダンパ５
１を閉成する（Ｓ１，Ｓ２）。Ｒダンパ５１閉成後、タ
イマ（図示せず）を起動し、圧縮機１の起動時からの運
転時間をカウントする（Ｓ３，Ｓ４）。圧縮機１が起動
し、冷却運転が行われると各貯蔵室内が冷却される。こ
の時冷蔵室内温度に関わらず、Ｚ分（例えば５分）強制
的にＲダンパ５１を閉成させる。そして、タイマがＺ分
経過すると通常制御の冷却運転に戻る（Ｓ５，Ｓ６）。FIG. 5 is a flowchart according to the third embodiment of the present invention. This embodiment relates to the operation after the completion of the defrosting. When the temperature reaches or exceeds the defrosting end set temperature by the defrosting end temperature sensor, it is determined that the defrosting has ended, and the R damper 5
1 is closed (S1, S2). After the R damper 51 is closed, a timer (not shown) is started, and the operation time from the start of the compressor 1 is counted (S3, S4). When the compressor 1 is started and a cooling operation is performed, each storage room is cooled. At this time, the R damper 51 is forcibly closed for Z minutes (for example, 5 minutes) regardless of the refrigerator room temperature. When the timer has elapsed for Z minutes, the operation returns to the normal control cooling operation (S5, S6).

【００３８】上記動作のタイミングチャートを図６に示
している。除霜運転終了後の圧縮機起動時において、蒸
発器１５は冷凍室２３内の冷気と熱交換させているた
め、吸い込み圧力の急激な上昇を抑えることができ、圧
縮機の起動不良等を防止することができる。FIG. 6 shows a timing chart of the above operation. When the compressor is started after the completion of the defrosting operation, the evaporator 15 exchanges heat with the cool air in the freezing chamber 23, so that a sudden increase in the suction pressure can be suppressed, and poor starting of the compressor and the like can be prevented. can do.

【００３９】図７は本願発明の第４の実施例に係るフロ
ーチャートである。図８は図７におけるタイミングチャ
ートである。本実施例は、冷蔵室扉が開けられた時のＲ
ダンパ及び送風ファンの動作に関する。FIG. 7 is a flowchart according to the fourth embodiment of the present invention. FIG. 8 is a timing chart in FIG. In this embodiment, when the refrigerator compartment door is opened, R
It relates to the operation of the damper and the blower fan.

【００４０】貯蔵室扉の半扉等を検知するため、扉開閉
検知手段が設けられている。冷蔵室については、冷蔵室
扉開閉を検知する冷蔵室扉開閉検知手段を備え、冷凍室
については、冷凍室扉開閉検知手段を備えている。（図
示せず）また、圧縮機１および送風ファン４７は、同期
運転していおり、冷却時は圧縮機１及び送風ファン４７
を運転し、冷却不要時は圧縮機１及び送風ファン４７は
停止する。冷蔵室扉２１が開けられると冷却運転中かど
うか判断する（Ｓ１，Ｓ２）。In order to detect a half door of the storage room door, a door opening / closing detecting means is provided. The refrigerating compartment is provided with a refrigerating compartment door open / close detecting means for detecting refrigerating compartment door opening / closing, and the freezing compartment is provided with a freezing compartment door open / close detecting means. (Not shown) The compressor 1 and the blower fan 47 operate synchronously, and during cooling, the compressor 1 and the blower fan 47
And the compressor 1 and the blower fan 47 are stopped when cooling is unnecessary. When the refrigerator compartment door 21 is opened, it is determined whether or not the cooling operation is being performed (S1, S2).

【００４１】冷却運転中であると、Ｒダンパ閉設定温度
に関わらずＲダンパ５１を閉成し（Ｓ３）、その後、冷
蔵室扉２１が閉成されると通常制御に戻る（Ｓ４，Ｓ
５）。図８は、本発明の第４の実施例に係るタイミング
チャートである。During the cooling operation, the R damper 51 is closed regardless of the R damper closing set temperature (S3). Thereafter, when the refrigerator compartment door 21 is closed, the control returns to the normal control (S4, S).
5). FIG. 8 is a timing chart according to the fourth embodiment of the present invention.

【００４２】冷蔵室扉２９開時、Ｒダンパ５１を閉成と
することにより庫外への冷気漏れを防止するとともに、
送風ファン４７は継続運転しているため、図８中実線で
示されるように、蒸発器１５の吸熱量低下による液バッ
クを防止することができる。When the refrigerator compartment door 29 is opened, the R damper 51 is closed to prevent cold air from leaking out of the refrigerator.
Since the blower fan 47 is continuously operated, as shown by the solid line in FIG. 8, it is possible to prevent liquid back due to a decrease in the amount of heat absorbed by the evaporator 15.

【００４３】[0043]

【発明の効果】以上説明したように、本発明では、冷蔵
室ダンパを冷蔵庫の運転状態により制御しているため、
圧縮機停止時の冷蔵庫本体の外表面への露付き防止とい
う効果を得ることができる。更には、圧縮機の吸込圧力
の上昇を防止することができるため、圧縮機の起動性向
上という効果を得ることができる。As described above, according to the present invention, the refrigerator compartment damper is controlled by the operation state of the refrigerator.
The effect of preventing dew on the outer surface of the refrigerator body when the compressor is stopped can be obtained. Further, since an increase in the suction pressure of the compressor can be prevented, an effect of improving the startability of the compressor can be obtained.

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

【図１】本発明の第１の実施例に係るフローチャートで
ある。FIG. 1 is a flowchart according to a first embodiment of the present invention.

【図２】本発明の第１の実施例に係るタイミングチャー
トである。FIG. 2 is a timing chart according to the first embodiment of the present invention.

【図３】本発明の第２の実施例に係るフローチャートで
ある。FIG. 3 is a flowchart according to a second embodiment of the present invention.

【図４】本発明の第２の実施例に係るタイミングチャー
トである。FIG. 4 is a timing chart according to a second embodiment of the present invention.

【図５】本発明の第３の実施例に係るフローチャートで
ある。FIG. 5 is a flowchart according to a third embodiment of the present invention.

【図６】本発明の第３の実施例に係るタイミングチャー
トである。FIG. 6 is a timing chart according to a third embodiment of the present invention.

【図７】本発明の第４の実施例に係るフローチャートで
ある。FIG. 7 is a flowchart according to a fourth embodiment of the present invention.

【図８】本発明の第４の実施例に係るタイミングチャー
トである。FIG. 8 is a timing chart according to a fourth embodiment of the present invention.

【図９】冷蔵庫に用いられる冷凍サイクルである。FIG. 9 is a refrigeration cycle used in a refrigerator.

【図１０】図９に示された冷凍サイクルを冷蔵庫に用い
た図である。10 is a diagram in which the refrigeration cycle shown in FIG. 9 is used in a refrigerator.

【図１１】一般的な冷凍冷蔵庫の断面図である。FIG. 11 is a sectional view of a general refrigerator-freezer.

【符号の説明】[Explanation of symbols]

９…クリーンパイプ，１５…蒸発器，１７…アキューム
レータ，２１…冷蔵室，２３…冷凍室，２９…冷蔵室
扉，３１…冷凍室扉，３９…除霜ヒータ，４７…送風フ
ァン，５１…冷蔵室ダンパ，５３…冷蔵室温度センサ，
５６…冷凍室温度センサ。9 ... Clean pipe, 15 ... Evaporator, 17 ... Accumulator, 21 ... Refrigerator compartment, 23 ... Freezer compartment, 29 ... Refrigerator compartment door, 31 ... Freezer compartment door, 39 ... Defrost heater, 47 ... Blower fan, 51 ... Refrigerator Room damper, 53… Refrigerator room temperature sensor,
56 ... Freezer temperature sensor.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 圧縮機，凝縮器，キャピラリチューブ及
び蒸発器等からなる冷凍サイクルと、 この冷凍サイクルにより冷却された冷気を送風手段によ
り冷凍室及び冷蔵室等の貯蔵室に循環し冷却を行う冷蔵
庫において、 前記冷凍室内の温度を検知する冷凍室温度検知手段と、 前記冷蔵室内の温度を検知する冷蔵室温度検知手段と、 この冷蔵室内温度検知手段に基づいて前記冷蔵室内への
冷気流入を制御するダンパとを備え、 前記冷蔵室内が冷却されると前記ダンパを閉とするダン
パ閉設定温度及び前記冷蔵室内温度が上昇すると前記ダ
ンパを開とするダンパ開設定温度を設定するダンパ開閉
温度設定手段と、 前記ダンパは前記冷蔵室内温度が前記ダンパ閉設定温度
＋Ｘ℃で閉とし、 前記冷凍室内温度が冷凍室設定温度以下になると前記ダ
ンパを開とするとともに、前記冷蔵室内温度が前記ダン
パ閉設定温度に以下になると前記ダンパを閉成し、前記
圧縮機の運転を停止することを特徴とする冷蔵庫。1. A refrigeration cycle comprising a compressor, a condenser, a capillary tube, an evaporator, and the like, and cool air cooled by the refrigeration cycle is circulated by air blowing means to storage rooms such as a freezer room and a refrigerator room for cooling. In the refrigerator, a freezer compartment temperature detecting means for detecting the temperature in the freezer compartment, a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerator compartment, and a flow of cold air into the refrigerator compartment based on the refrigerator compartment temperature detecting means. And a damper opening / closing temperature setting for setting a damper closing set temperature for closing the damper when the refrigerator compartment is cooled and a damper opening set temperature for opening the damper when the refrigerator compartment temperature rises. Means, the damper is closed when the refrigerator compartment temperature is equal to the damper closed set temperature + X ° C, and when the freezer compartment temperature is equal to or lower than the freezer compartment set temperature, the damper is closed. While the path is opened, a refrigerator in which the refrigerating compartment temperature is close to the damper and falls below the damper closed set temperature, characterized by stopping the operation of the compressor. 【請求項２】 圧縮機，凝縮器，キャピラリチューブ及
び蒸発器等からなる冷凍サイクルと、 この冷凍サイクルにより冷却された冷気を冷凍室及び冷
蔵室等の貯蔵室に循環し冷却を行う送風手段と、 前記冷凍室内の温度を検知する冷凍室温度検知手段と、 前記冷蔵室内の温度を検知する冷蔵室温度検知手段と、 前記圧縮機の運転を停止し、前記蒸発器等に付着した霜
を加熱融解する除霜用加熱手段と、 この除霜用加熱手段による加熱開始条件を設定する除霜
開始条件設定手段と、 前記圧縮機起動時からの運転時間をカウントするタイマ
と、 前記除霜開始条件設定手段により設定された条件を満た
すと、前記タイマにより所定時間前記貯蔵室内を冷却す
るプリクール運転を行い、このプリクール運転終了後、
前記除霜用加熱手段により除霜加熱を行う冷蔵庫におい
て、 前記冷蔵室内温度検知手段に基づいて前記冷蔵室内への
冷気流入を制御するダンパを備え、 前記タイマによりプリクール運転終了Ｙ分前から前記所
定時間までは、前記ダンパを開とすることを特徴とする
冷蔵庫。2. A refrigeration cycle comprising a compressor, a condenser, a capillary tube, an evaporator and the like, and a blowing means for circulating cool air cooled by the refrigeration cycle to a storage room such as a freezer room and a refrigerator room for cooling. A freezing compartment temperature detecting means for detecting the temperature in the freezing compartment; a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerating compartment; stopping the operation of the compressor and heating the frost adhering to the evaporator and the like. A defrosting heating unit to be melted; a defrosting start condition setting unit for setting a heating start condition by the defrosting heating unit; a timer for counting an operation time from the start of the compressor; and the defrosting start condition. When the condition set by the setting means is satisfied, a pre-cool operation for cooling the storage chamber for a predetermined time by the timer is performed, and after the completion of the pre-cool operation,
A refrigerator for performing defrosting heating by the defrosting heating means, comprising: a damper for controlling inflow of cold air into the refrigerator compartment based on the refrigerator compartment temperature detecting means; Refrigerator characterized by opening said damper until time. 【請求項３】 圧縮機，凝縮器，キャピラリチューブ及
び蒸発器等からなる冷凍サイクルと、 この冷凍サイクルにより冷却された冷気を冷凍室及び冷
蔵室等の貯蔵室に循環し冷却を行う送風手段と、 前記冷凍室内の温度を検知する冷凍室温度検知手段と、 前記冷蔵室内の温度を検知する冷蔵室温度検知手段と、 前記圧縮機の運転を停止し、前記蒸発器等に付着した霜
を加熱融解する除霜用加熱手段と、 この除霜用加熱手段の開始条件を設定する除霜開始条件
設定手段と、 前記圧縮機起動時からの運転時間をカウントするタイマ
を備え、 前記除霜開始条件設定手段により設定された条件を満た
すと、前記タイマにより所定時間前記貯蔵室内を冷却す
るプリクール運転を行い、このプリクール運転終了後、
前記除霜用加熱手段により除霜加熱を行う冷蔵庫におい
て、 前記冷蔵室内温度検知手段に基づいて前記冷蔵室内への
冷気流入を制御するダンパを備え、 前記除霜用加熱手段による加熱運転終了後、前記タイマ
が前記圧縮機再起動後の所定時間をカウントするまで前
記ダンパを閉成することを特徴とする冷蔵庫。3. A refrigeration cycle comprising a compressor, a condenser, a capillary tube, an evaporator and the like, and a blowing means for circulating cool air cooled by the refrigeration cycle to a storage room such as a freezer room and a refrigerator room for cooling. A freezing compartment temperature detecting means for detecting the temperature in the freezing compartment; a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerating compartment; stopping the operation of the compressor and heating the frost adhering to the evaporator and the like. A defrosting heating means for melting, a defrosting start condition setting means for setting a start condition of the defrosting heating means, and a timer for counting an operation time from the start of the compressor, the defrosting start condition When the condition set by the setting means is satisfied, a pre-cool operation for cooling the storage chamber for a predetermined time by the timer is performed, and after the completion of the pre-cool operation,
In a refrigerator that performs defrosting heating by the defrosting heating unit, further comprising a damper that controls the flow of cool air into the refrigerator compartment based on the refrigerator compartment temperature detection unit, after the heating operation by the defrosting heating unit is completed, The refrigerator closes the damper until the timer counts a predetermined time after restarting the compressor. 【請求項４】 圧縮機，凝縮器，キャピラリチューブ及
び蒸発器等からなる冷凍サイクルと、 この冷凍サイクルにより冷却された冷気を送風手段によ
り冷凍室及び冷蔵室等の貯蔵室に循環し冷却を行う冷蔵
庫において、 前記冷凍室内の温度を検知する冷凍室温度検知手段と、 前記冷蔵室内の温度を検知する冷蔵室温度検知手段と、 この冷蔵室内温度検知手段に基づいて前記冷蔵室内への
冷気流入を制御するダンパと、 前記冷蔵室の扉開閉を検知する冷蔵室扉開閉検知手段と
を備え、 前記冷凍サイクル運転時、前記冷蔵室扉の開状態を検知
すると、前記ダンパを閉成するとともに前記送風手段を
運転することを特徴とする冷蔵庫。4. A refrigeration cycle including a compressor, a condenser, a capillary tube, an evaporator, and the like, and cool air cooled by the refrigeration cycle is circulated to storage rooms such as a freezing room and a refrigerating room by a blowing means to perform cooling. In the refrigerator, a freezer compartment temperature detecting means for detecting the temperature in the freezer compartment, a refrigerator compartment temperature detecting means for detecting the temperature in the refrigerator compartment, and a flow of cold air into the refrigerator compartment based on the refrigerator compartment temperature detecting means. A refrigerating compartment door opening / closing detecting means for detecting opening / closing of the refrigerating compartment door, and detecting the open state of the refrigerating compartment door during the refrigeration cycle operation, closing the damper and blowing the air. Refrigerator characterized by operating means.