JP6017886B2 - refrigerator - Google Patents

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JP6017886B2
JP6017886B2 JP2012185208A JP2012185208A JP6017886B2 JP 6017886 B2 JP6017886 B2 JP 6017886B2 JP 2012185208 A JP2012185208 A JP 2012185208A JP 2012185208 A JP2012185208 A JP 2012185208A JP 6017886 B2 JP6017886 B2 JP 6017886B2
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temperature
refrigerator
fan
cold air
damper
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JP2014043960A (en
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徹 川浪
徹 川浪
山本　浩太郎
浩太郎 山本
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Sharp Corp
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Description

本発明は、冷凍室に冷気を送出する冷凍室ファンと冷蔵室に冷気を送出する冷蔵室ファンとを備えた冷蔵庫に関する。   The present invention relates to a refrigerator including a freezer compartment fan that sends cold air to the freezer compartment and a refrigerator compartment fan that sends cold air to the refrigerator compartment.

従来の冷蔵庫は特許文献１に開示されている。この冷蔵庫は断熱箱体により形成される冷凍室及び冷蔵室を有し、断熱箱体の下方に設けられる機械室内には冷凍サイクルを運転する圧縮機が配される。冷凍室及び冷蔵室の背面にはそれぞれ第１、第２冷気通路が配される。冷凍室の背面の第１冷気通路は冷凍室に臨む第１吐出口を有して冷却器及び冷凍室ファンが配される。冷蔵室の背面の第２冷気通路はダンパを介して第１冷気通路に連通し、冷蔵室に臨む第２吐出口を有して冷蔵室ファンが配される。   A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has a freezing room and a refrigeration room formed by a heat insulating box, and a compressor for operating a refrigeration cycle is arranged in a machine room provided below the heat insulating box. First and second cold air passages are disposed on the back surfaces of the freezer compartment and the refrigerator compartment, respectively. The first cold air passage on the back surface of the freezer compartment has a first discharge port facing the freezer compartment, and a cooler and a freezer compartment fan are arranged. The second cold air passage on the back surface of the refrigerator compartment communicates with the first cold air passage via a damper, and has a second discharge port facing the refrigerator compartment, and a refrigerator compartment fan is arranged.

冷凍室が上限温度に到達すると圧縮機及び冷凍室ファンが駆動される。これにより、冷却器で熱交換して生成された冷気が第１吐出口を介して冷凍室に吐出され、冷凍室が冷却される。そして、冷凍室を流通した冷気は冷却器に戻される。   When the freezer compartment reaches the upper limit temperature, the compressor and the freezer compartment fan are driven. Thereby, the cold air | gas produced | generated by heat-exchange with a cooler is discharged to a freezer compartment via a 1st discharge port, and a freezer compartment is cooled. And the cold air which distribute | circulated the freezer compartment is returned to a cooler.

圧縮機の駆動中に冷蔵室内が所定のダンパ開温度よりも高温になると、ダンパを開いて冷蔵室ファンが駆動される。これにより、第１冷気通路から第２冷気通路に流入した冷気が第２吐出口を介して冷蔵室に吐出され、冷蔵室が冷却される。そして、冷蔵室を流通した冷気は冷却器に戻される。また、冷蔵室内がダンパ閉温度よりも低温になると、ダンパを閉じて冷蔵室ファンが停止される。この時、冷凍室が下限温度に到達すると圧縮機及び冷凍室ファンが停止される。   If the refrigerator compartment becomes hotter than a predetermined damper opening temperature during driving of the compressor, the damper is opened and the refrigerator compartment fan is driven. Thereby, the cold air flowing into the second cold air passage from the first cold air passage is discharged to the refrigerating chamber through the second discharge port, and the refrigerating chamber is cooled. And the cold air which distribute | circulated the refrigerator compartment is returned to a cooler. Further, when the refrigerator compartment is cooler than the damper closing temperature, the damper is closed and the refrigerator compartment fan is stopped. At this time, when the freezer reaches the lower limit temperature, the compressor and the freezer fan are stopped.

冷蔵室ファンが設けられない場合は、特に大型の冷蔵庫において冷蔵室の内壁に沿って流通する冷気が不十分になる。このため、周辺温度が高い場合には冷蔵室が所定の温度以下に冷却されるまでに冷凍室が冷えすぎる場合がある。また、第２冷気通路を流通する冷気と冷蔵室との温度差によって冷蔵室の内壁に結露が発生する。従って、冷蔵室ファンを設けることにより冷蔵室内全体に冷気が流通し、冷蔵室の内壁の結露を防止することができる。   When the refrigerator compartment fan is not provided, the cool air flowing along the inner wall of the refrigerator compartment becomes insufficient particularly in a large refrigerator. For this reason, when the ambient temperature is high, the freezer compartment may be too cold before the refrigerator compartment is cooled below a predetermined temperature. Also, condensation occurs on the inner wall of the refrigerator compartment due to the temperature difference between the cold air flowing through the second cold passage and the refrigerator compartment. Therefore, by providing the refrigerator compartment fan, the cold air flows through the entire refrigerator compartment, and condensation on the inner wall of the refrigerator compartment can be prevented.

特開２００８−２６９６号公報（第５頁〜第１１頁、第３図）JP 2008-2696 A (pages 5 to 11 and FIG. 3)

しかしながら、上記従来の冷蔵庫によると、冷蔵室の冷却時に冷蔵室ファン及び冷凍室ファンが駆動されるため、冷蔵庫の消費電力量が多くなる問題があった。   However, according to the conventional refrigerator, since the refrigerator compartment fan and the freezer compartment fan are driven when the refrigerator compartment is cooled, there is a problem that the power consumption of the refrigerator increases.

本発明は、冷蔵室の結露を防止するとともに、消費電力量を削減できる冷蔵庫を提供することを目的とする。   An object of this invention is to provide the refrigerator which can reduce the power consumption while preventing the condensation of a refrigerator compartment.

上記目的を達成するために本発明は、貯蔵物を冷蔵保存する冷蔵室と、貯蔵物を冷凍保存する冷凍室と、冷凍サイクルを運転する圧縮機と、前記冷凍サイクルの低温部に配されるとともに冷気を生成する冷却器と、前記冷凍室に臨む第１吐出口を開口して前記冷却器が配される第１冷気通路と、ダンパを介して第１冷気通路に連通するとともに前記冷蔵室に臨む第２吐出口を開口する第２冷気通路と、第１冷気通路に配される冷凍室ファンと、第２冷気通路に配される冷蔵室ファンと、前記冷蔵室の温度を検知する冷蔵室温度センサと、前記冷凍室の温度を検知する冷凍室温度センサとを備えた冷蔵庫において、
前記圧縮機及び前記冷凍室ファンの駆動時に、前記冷蔵室が所定のダンパ開温度よりも昇温された際に前記ダンパを開いて前記冷蔵室ファンを駆動し、前記ダンパ開温度に対して低温のファン停止温度よりも降温された際に前記冷蔵室ファンを停止し、前記ファン停止温度に対して低温のダンパ閉温度よりも降温された際に前記ダンパを閉じることを特徴としている。 In order to achieve the above object, the present invention is arranged in a refrigerator compartment for storing stored items in a refrigerator, a freezer chamber for storing stored items in a frozen state, a compressor for operating a refrigeration cycle, and a low temperature part of the refrigeration cycle. A cooler that generates cold air, a first cold air passage in which the first discharge port facing the freezer compartment is opened and the cooler is disposed, and a first cold air passage that communicates with the first cold air passage via a damper. A second cold air passage that opens a second discharge port facing the chiller, a freezer compartment fan arranged in the first cold air passage, a refrigerator compartment fan arranged in the second cold air passage, and a refrigerator that detects the temperature of the refrigerator compartment In a refrigerator comprising a room temperature sensor and a freezer temperature sensor for detecting the temperature of the freezer room,
When the compressor and the freezer compartment fan are driven, when the refrigerator compartment is heated above a predetermined damper opening temperature, the damper is opened to drive the refrigerator compartment fan, and the temperature is lower than the damper opening temperature. The refrigerator compartment fan is stopped when the temperature is lower than the fan stop temperature, and the damper is closed when the temperature is lower than the damper closing temperature which is lower than the fan stop temperature.

この構成によると、圧縮機及び冷凍室ファンが駆動されると、第１冷気通路を流通する空気と冷却器との熱交換により生成された冷気が第１吐出口を介して冷凍室に吐出される。冷蔵室がダンパ開温度よりも昇温されると、ダンパが開かれて冷蔵室ファンが駆動される。これにより、第２冷気通路を冷気が流通し、第２吐出口を介して冷蔵室に吐出される。冷蔵室がファン停止温度よりも降温されると、冷蔵室ファンが停止される。この時、冷凍室ファンによって冷気は第２吐出口を介して冷蔵室に吐出される。冷蔵室がダンパ閉温度よりも降温されると、ダンパを閉じて冷蔵室への冷気供給が停止される。   According to this configuration, when the compressor and the freezer compartment fan are driven, cold air generated by heat exchange between the air flowing through the first cold air passage and the cooler is discharged into the freezer compartment via the first discharge port. The When the temperature of the refrigerator compartment is raised above the damper opening temperature, the damper is opened and the refrigerator compartment fan is driven. Thereby, the cold air flows through the second cold air passage and is discharged to the refrigerator compartment through the second discharge port. When the refrigerator compartment is cooled below the fan stop temperature, the refrigerator compartment fan is stopped. At this time, cold air is discharged by the freezer compartment fan into the refrigerator compartment through the second outlet. When the temperature of the refrigerator compartment is lowered below the damper closing temperature, the damper is closed and the supply of cold air to the refrigerator compartment is stopped.

また本発明は、上記構成の冷蔵庫において、前記ダンパ開温度と前記ファン停止温度との温度差を０〜３℃にしたことを特徴としている。   Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, a temperature difference between the damper opening temperature and the fan stop temperature is set to 0 to 3 ° C.

また本発明は、上記構成の冷蔵庫において、前記冷凍室が所定の上限温度よりも昇温された際に前記圧縮機及び前記冷凍室ファンを駆動し、所定の下限温度よりも降温された際に前記圧縮機及び前記冷凍室ファンを停止することを特徴としている。   In the refrigerator having the above-described configuration, the compressor and the freezer compartment fan are driven when the freezer compartment is heated above a predetermined upper limit temperature, and the temperature is lowered below a predetermined lower limit temperature. The compressor and the freezer fan are stopped.

本発明によると、冷蔵室がファン停止温度よりも降温された際に冷蔵室ファンを停止し、ファン停止温度よりも低温のダンパ閉温度よりも降温された際にダンパを閉じる。このため、冷蔵室ファンの駆動によって冷蔵室内全体に冷気を流通させて冷凍室の過冷却を防止するとともに冷蔵室の結露を防止することができる。また、冷蔵室がファン停止温度よりも降温されるとダンパを開いた状態で冷蔵室ファンが停止される。このため、冷蔵室をダンパ閉温度まで継続して降温できるとともに冷蔵庫の消費電力量を削減することができる。   According to the present invention, the refrigerator compartment fan is stopped when the temperature of the refrigerator compartment is lowered from the fan stop temperature, and the damper is closed when the temperature is lowered from the damper closing temperature lower than the fan stop temperature. For this reason, it is possible to prevent the overcooling of the freezer compartment and prevent condensation in the freezer compartment by circulating cold air throughout the refrigerator compartment by driving the refrigerator compartment fan. Further, when the temperature of the refrigerator compartment is lowered from the fan stop temperature, the refrigerator compartment fan is stopped with the damper opened. For this reason, the refrigerator compartment can be continuously cooled to the damper closing temperature, and the power consumption of the refrigerator can be reduced.

本発明の実施形態の冷蔵庫を示す側面断面図Side surface sectional drawing which shows the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫の構成を示すブロック図The block diagram which shows the structure of the refrigerator of embodiment of this invention. 本発明の実施形態の冷蔵庫の動作を示すフローチャートThe flowchart which shows operation | movement of the refrigerator of embodiment of this invention. 本発明の実施形態の冷蔵庫の動作の一例を示すタイムチャートThe time chart which shows an example of operation | movement of the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫の消費電力量を示す図The figure which shows the power consumption of the refrigerator of embodiment of this invention

＜第１実施形態＞
以下に図面を参照して本発明の実施形態を説明する。図１は一実施形態の冷蔵庫を示す側面断面図である。冷蔵庫１は断熱箱体２の上方から順に冷蔵室３、冷凍室４、野菜室５が設けられる。冷蔵室３は貯蔵物を冷蔵保存し、冷凍室４は貯蔵物を冷凍保存する。野菜室５は冷蔵室３よりも高温に維持され、野菜等の貯蔵物を冷蔵保存する。 <First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing a refrigerator according to an embodiment. The refrigerator 1 is provided with a refrigerator compartment 3, a freezer compartment 4, and a vegetable compartment 5 in order from above the heat insulating box 2. The refrigerator compartment 3 stores the stored items in a refrigerator, and the freezer compartment 4 stores the stored items in a frozen state. The vegetable room 5 is maintained at a higher temperature than the refrigerated room 3 and refrigerates stored items such as vegetables.

冷蔵室３は一端を枢支される回動式の扉３ａによって開閉される。冷凍室４及び野菜室５はそれぞれ収納ケース（不図示）と一体に形成される引出式の扉４ａ、５ａによって開閉される。   The refrigerator compartment 3 is opened and closed by a pivotable door 3a pivoted at one end. The freezer compartment 4 and the vegetable compartment 5 are opened and closed by drawer type doors 4a and 5a formed integrally with a storage case (not shown), respectively.

冷凍室４及び冷蔵室３の背面にはダンパ１５を介して連通する第１、第２冷気通路７、８が設けられる。第１冷気通路７には冷却器１１及び冷凍室ファン１２が配され、冷凍室４に臨む吐出口７ａ（第１吐出口）が開口する。第２冷気通路８には冷蔵室ファン１３が配され、冷蔵室３に臨む吐出口８ａ（第２吐出口）が開口する。   First and second cold air passages 7 and 8 that communicate with each other via a damper 15 are provided on the back surfaces of the freezer compartment 4 and the refrigerator compartment 3. A cooler 11 and a freezer compartment fan 12 are arranged in the first cold air passage 7, and an outlet 7 a (first outlet) facing the freezer compartment 4 is opened. A refrigerator compartment fan 13 is arranged in the second cold air passage 8, and an outlet 8 a (second outlet) facing the refrigerator compartment 3 is opened.

冷凍室４には冷気を第１冷気通路７に戻す戻り口（不図示）が設けられる。冷蔵室３には野菜室５に連通する連通路（不図示）が導出され、野菜室５には冷気を第１冷気通路７に戻す戻り口（不図示）が設けられる。   The freezer compartment 4 is provided with a return port (not shown) for returning cold air to the first cold air passage 7. The refrigerator compartment 3 has a communication passage (not shown) communicating with the vegetable compartment 5, and the vegetable compartment 5 is provided with a return port (not shown) for returning the cold air to the first cold air passage 7.

野菜室５の後方には機械室６が設けられ、機械室６内には冷凍サイクルを運転する圧縮機１０が設置される。圧縮機１０には冷媒が流通する冷媒管（不図示）を介して凝縮器（不図示）、キャピラリチューブ（不図示）、冷却器１１が順に接続され、圧縮機１０に戻る。これにより、冷凍サイクルが運転され、冷却器１１が第１冷気通路７を流通する空気と熱交換して冷気が生成される。   A machine room 6 is provided behind the vegetable room 5, and a compressor 10 that operates a refrigeration cycle is installed in the machine room 6. A condenser (not shown), a capillary tube (not shown), and a cooler 11 are sequentially connected to the compressor 10 via a refrigerant pipe (not shown) through which refrigerant flows, and the compressor 10 returns to the compressor 10. Thus, the refrigeration cycle is operated, and the cooler 11 exchanges heat with the air flowing through the first cold air passage 7 to generate cold air.

冷凍室ファン１２を駆動すると第１冷気通路７を流通する冷気が吐出口７ａを介して冷凍室４に吐出され、冷凍室４が冷却される。冷凍室４を流通した冷気は戻り口を介して第１冷気通路７に戻る。   When the freezer compartment fan 12 is driven, cold air flowing through the first cold air passage 7 is discharged to the freezer compartment 4 through the discharge port 7a, and the freezer compartment 4 is cooled. The cold air flowing through the freezer compartment 4 returns to the first cold air passage 7 through the return port.

ダンパ１５を開いて冷蔵室ファン１３を駆動すると、第１冷気通路７から第２冷気通路８に冷気が流入する。第２冷気通路８を流通する冷気は吐出口８ａを介して冷蔵室３に吐出され、冷蔵室３が冷却される。冷蔵室３を流通した冷気は連通路を介して野菜室５に導かれ、野菜室５が冷却される。野菜室５を流通した冷気は戻り口を介して第１冷気通路７に戻る。尚、ダンパ１５を開いた状態で冷蔵室ファン１３を停止すると、冷凍室ファン１２により冷気が第２冷気通路８を流通して冷蔵室３に吐出される。   When the damper 15 is opened and the refrigerator compartment fan 13 is driven, cold air flows from the first cold air passage 7 into the second cold air passage 8. The cold air flowing through the second cold air passage 8 is discharged to the refrigerating chamber 3 through the discharge port 8a, and the refrigerating chamber 3 is cooled. The cold air flowing through the refrigerator compartment 3 is guided to the vegetable compartment 5 through the communication path, and the vegetable compartment 5 is cooled. The cold air flowing through the vegetable compartment 5 returns to the first cold air passage 7 through the return port. When the refrigerator compartment fan 13 is stopped with the damper 15 opened, cold air is circulated through the second cold passage 8 by the freezer compartment fan 12 and discharged to the refrigerator compartment 3.

図２は冷蔵庫１の構成を示すブロック図である。冷蔵庫１は各部を制御する制御部２０を有している。制御部２０には圧縮機１０、冷凍室ファン１２、冷蔵室ファン１３、ダンパ１５、操作パネル２１、冷凍室温度センサ２２、冷蔵室温度センサ２３、記憶部２４が接続される。   FIG. 2 is a block diagram showing the configuration of the refrigerator 1. The refrigerator 1 has a control unit 20 that controls each unit. A compressor 10, a freezer compartment fan 12, a refrigerator compartment fan 13, a damper 15, an operation panel 21, a freezer compartment temperature sensor 22, a refrigerator compartment temperature sensor 23, and a storage unit 24 are connected to the controller 20.

操作パネル２１は通常モードや省エネモード等の運転モード等の設定操作を行う。冷凍室温度センサ２２は冷凍室４内の温度を検知し、冷蔵室温度センサ２３は冷蔵室３内の温度を検知する。記憶部２４はＲＡＭ及びＲＯＭから成り、冷蔵庫１の動作プログラムを格納するとともに制御部２０による演算の一時記憶を行う。   The operation panel 21 performs setting operations such as an operation mode such as a normal mode and an energy saving mode. The freezer temperature sensor 22 detects the temperature in the freezer room 4, and the refrigerating room temperature sensor 23 detects the temperature in the refrigerating room 3. The storage unit 24 includes a RAM and a ROM, and stores an operation program of the refrigerator 1 and temporarily stores calculations by the control unit 20.

図３は冷蔵庫１の動作を示すフローチャートである。冷蔵庫１に商用電源から電力供給が開始されると、記憶部２４に記憶された動作プログラムが実行されて以下の動作が行われる。ステップ＃１１では冷凍室温度センサ２２の検知による冷凍室４の温度が所定の上限温度（例えば、−１９℃）以上に昇温された否かが判断される。冷凍室４が上限温度以上になると、ステップ＃１２に移行して圧縮機１０及び冷凍室ファン１２が駆動される。これにより、冷凍室４の冷却が開始される。   FIG. 3 is a flowchart showing the operation of the refrigerator 1. When power supply from the commercial power supply to the refrigerator 1 is started, the operation program stored in the storage unit 24 is executed and the following operation is performed. In step # 11, it is determined whether or not the temperature of the freezer compartment 4 detected by the freezer temperature sensor 22 has been raised to a predetermined upper limit temperature (for example, −19 ° C.) or higher. When the freezer compartment 4 reaches or exceeds the upper limit temperature, the process proceeds to step # 12, and the compressor 10 and the freezer compartment fan 12 are driven. Thereby, cooling of the freezer compartment 4 is started.

ステップ＃１３では冷蔵室温度センサ２３の検知による冷蔵室３の温度が所定のダンパ開温度Ｔ１（図４参照）以上に昇温されたか否かが判断される。冷蔵室３がダンパ開温度Ｔ１よりも低温の場合はステップ＃１５に移行する。冷蔵室３がダンパ開温度Ｔ１以上の場合はステップ＃１４でダンパ１５が開かれて冷蔵室ファン１３が駆動される。これにより、冷蔵室３の冷却が開始される。   In step # 13, it is determined whether or not the temperature of the refrigerator compartment 3 detected by the refrigerator compartment temperature sensor 23 has been raised to a predetermined damper opening temperature T1 (see FIG. 4) or higher. When the refrigerator compartment 3 is lower than the damper opening temperature T1, the process proceeds to step # 15. If the refrigerator compartment 3 is at or above the damper opening temperature T1, the damper 15 is opened at step # 14 and the refrigerator compartment fan 13 is driven. Thereby, cooling of the refrigerator compartment 3 is started.

ステップ＃１５では冷蔵室３がダンパ開温度Ｔ１に対して低温のファン停止温度Ｔ２（図４参照）以下に降温されたか否かが判断される。冷蔵室３がファン停止温度Ｔ２よりも高温の場合はステップ＃１３に戻り、ステップ＃１３〜＃１５が繰り返し行われる。冷蔵室３がファン停止温度Ｔ２以下の場合はステップ＃１６で冷蔵室ファン１３が停止される。この時、冷凍室ファン１２によって冷気が冷蔵室３に吐出される。   In step # 15, it is determined whether or not the refrigerator compartment 3 has been cooled to a temperature equal to or lower than the low fan stop temperature T2 (see FIG. 4) with respect to the damper opening temperature T1. When the refrigerator compartment 3 is higher than the fan stop temperature T2, the process returns to step # 13, and steps # 13 to # 15 are repeated. When the refrigerator compartment 3 is below the fan stop temperature T2, the refrigerator compartment fan 13 is stopped by step # 16. At this time, cold air is discharged into the refrigerator compartment 3 by the freezer compartment fan 12.

ステップ＃１７では冷蔵室３がファン停止温度Ｔ２に対して低温のダンパ閉温度Ｔ３（図４参照）以下に降温されたか否かが判断される。冷蔵室３がダンパ閉温度Ｔ３よりも高温の場合はステップ＃１３に戻り、ステップ＃１３〜＃１７が繰り返し行われる。冷蔵室３がダンパ閉温度Ｔ３以下の場合はステップ＃１８でダンパ１５が閉じられる。これにより、冷蔵室３への冷気供給が停止される。   In step # 17, it is determined whether or not the refrigerator compartment 3 has been cooled to a temperature equal to or lower than a low damper closing temperature T3 (see FIG. 4) with respect to the fan stop temperature T2. When the refrigerator compartment 3 is higher than the damper closing temperature T3, the process returns to step # 13, and steps # 13 to # 17 are repeated. If the refrigerator compartment 3 is below the damper closing temperature T3, the damper 15 is closed at step # 18. Thereby, the cold air supply to the refrigerator compartment 3 is stopped.

ダンパ開温度Ｔ１及びダンパ閉温度Ｔ３は操作パネル２１で設定される運転モードに応じて設定される。例えば、ダンパ開温度Ｔ１は７℃、ダンパ閉温度Ｔ３は０℃に設定される。また、ファン停止温度Ｔ２はダンパ開温度Ｔ１に対して例えば、２℃低温の５℃に設定される。   The damper opening temperature T1 and the damper closing temperature T3 are set according to the operation mode set on the operation panel 21. For example, the damper opening temperature T1 is set to 7 ° C., and the damper closing temperature T3 is set to 0 ° C. The fan stop temperature T2 is set to 5 ° C., which is 2 ° C. lower than the damper opening temperature T1, for example.

ステップ＃１９では冷凍室４が所定の下限温度（例えば、−２３℃）以下に降温された否かが判断される。冷凍室４が下限温度よりも高温の場合はステップ＃１３に移行し、ステップ＃１３〜＃１９が繰り返し行われる。これにより、圧縮機１０及び冷凍室ファン１２の駆動中に、ダンパ１５の開閉及び冷蔵室ファン１３のオンオフが行われる。   In step # 19, it is determined whether or not the freezer compartment 4 has been cooled to a predetermined lower limit temperature (for example, −23 ° C.) or less. When the freezer compartment 4 is higher than the lower limit temperature, the process proceeds to step # 13, and steps # 13 to # 19 are repeated. Thereby, the damper 15 is opened and closed and the refrigerator compartment fan 13 is turned on and off while the compressor 10 and the freezer compartment fan 12 are driven.

冷凍室４が下限温度以下に降温されると、ステップ＃２０に移行する。ステップ＃２０では圧縮機１０、冷凍室ファン１２及び冷蔵室ファン１３が停止され、ダンパ１５が閉じられる。そして、ステップ＃１１に戻り、冷凍室４が上限温度以上になるまで待機する。   When the freezer compartment 4 is lowered below the lower limit temperature, the process proceeds to step # 20. In step # 20, the compressor 10, the freezer compartment fan 12, and the refrigerator compartment fan 13 are stopped, and the damper 15 is closed. And it returns to step # 11 and waits until the freezer compartment 4 becomes more than upper limit temperature.

図４（ａ）〜（ｄ）は冷蔵庫１の動作の一例を示すタイムチャートである。図４（ａ）の縦軸は冷蔵室３の温度を示している。図４（ｂ）の縦軸は圧縮機１０のオン状態とオフ状態とを示している。図４（ｃ）の縦軸はダンパ１５の開状態と閉状態とを示している。図４（ｄ）の縦軸は冷蔵室ファン１３のオン状態とオフ状態とを示している。   4A to 4D are time charts showing an example of the operation of the refrigerator 1. The vertical axis | shaft of Fig.4 (a) has shown the temperature of the refrigerator compartment 3. FIG. The vertical axis in FIG. 4B indicates the on state and the off state of the compressor 10. The vertical axis of FIG. 4C shows the open state and the closed state of the damper 15. The vertical axis in FIG. 4D indicates the on state and off state of the refrigerator compartment fan 13.

圧縮機１０及び冷凍室ファン１２は冷凍室４の温度に応じて時間ｔ１〜ｔ９の間で駆動される。時間ｔ１では冷蔵室３がダンパ開温度Ｔ１を超えているため、ダンパ１５を開いて冷蔵室ファン１３が駆動される。これにより、冷蔵室３が冷却され、時間ｔ２でファン停止温度Ｔ２まで降温されると冷蔵室ファン１３が停止される。   The compressor 10 and the freezer compartment fan 12 are driven between times t1 to t9 according to the temperature of the freezer compartment 4. At time t1, since the refrigerator compartment 3 exceeds the damper opening temperature T1, the damper 15 is opened and the refrigerator compartment fan 13 is driven. As a result, the refrigerator compartment 3 is cooled, and when the temperature is lowered to the fan stop temperature T2 at time t2, the refrigerator compartment fan 13 is stopped.

扉３ａの開閉等により冷蔵室３の温度が上昇して時間ｔ３でダンパ開温度Ｔ１まで昇温されると、ダンパ１５の開状態を維持して冷蔵室ファン１３が駆動される。冷蔵室３が冷却により時間ｔ４でファン停止温度Ｔ２まで降温されると冷蔵室ファン１３が停止される。時間ｔ５で冷蔵室３がダンパ閉温度Ｔ３まで降温されるとダンパ１５が閉じられる。これにより、冷蔵室３の冷気供給が停止され、冷蔵室３が昇温される。   When the temperature of the refrigerator compartment 3 rises by opening / closing the door 3a and the temperature is raised to the damper opening temperature T1 at time t3, the damper 15 is kept open and the refrigerator compartment fan 13 is driven. When the refrigerator compartment 3 is cooled to the fan stop temperature T2 at time t4 by cooling, the refrigerator compartment fan 13 is stopped. When the refrigerator compartment 3 is lowered to the damper closing temperature T3 at time t5, the damper 15 is closed. Thereby, the cold supply of the refrigerator compartment 3 is stopped, and the refrigerator compartment 3 is heated up.

時間ｔ６で冷蔵室３がダンパ開温度Ｔ１まで昇温されるとダンパ１５を開いて冷蔵室ファン１３が駆動される。時間ｔ７で冷蔵室３がファン停止温度Ｔ２まで降温されると冷蔵室ファン１３が停止される。時間ｔ８で冷蔵室３がダンパ閉温度Ｔ３まで降温されるとダンパ１５が閉じられる。   When the refrigerator compartment 3 is heated to the damper opening temperature T1 at time t6, the damper 15 is opened and the refrigerator compartment fan 13 is driven. When the refrigerator compartment 3 is lowered to the fan stop temperature T2 at time t7, the refrigerator compartment fan 13 is stopped. When the refrigerator compartment 3 is lowered to the damper closing temperature T3 at time t8, the damper 15 is closed.

図５はファン停止温度Ｔ２を可変して冷蔵庫１の消費電力量を調べた結果を示している。同図において縦軸は消費電力量（単位：ｋＷｈ／ｄａｙ）であり、横軸はダンパ開温度Ｔ１とファン停止温度Ｔ２との温度差ΔＴ（単位：℃）である。冷蔵庫１の容量を６００Ｌ、ダンパ開温度Ｔ１を６℃、ダンパ閉温度Ｔ３を０℃、冷凍室４の上限温度を−１９℃、冷凍室４の下限温度を−２３℃としている。   FIG. 5 shows the result of examining the power consumption of the refrigerator 1 by changing the fan stop temperature T2. In the figure, the vertical axis represents power consumption (unit: kWh / day), and the horizontal axis represents the temperature difference ΔT (unit: ° C.) between the damper open temperature T1 and the fan stop temperature T2. The capacity of the refrigerator 1 is 600 L, the damper open temperature T1 is 6 ° C., the damper close temperature T3 is 0 ° C., the upper limit temperature of the freezer compartment 4 is −19 ° C., and the lower limit temperature of the freezer compartment 4 is −23 ° C.

同図によると、ファン停止温度Ｔ２がダンパ閉温度Ｔ３に一致する温度差ΔＴが６℃の場合に比して、温度差ΔＴを３℃以下にすると消費電力量を約４％削減することができる。この時、温度差ΔＴを０℃にしてもよい。これにより、扉３ａの開閉等によりダンパ開温度Ｔ１よりも冷蔵室３が昇温した際に、冷蔵室ファン１３を駆動してファン停止温度Ｔ２（＝ダンパ開温度Ｔ１）まで冷蔵室３を急速に降温することができる。このため、温度差ΔＴを０〜３℃にすると望ましい。   According to the figure, compared to the case where the temperature difference ΔT at which the fan stop temperature T2 matches the damper closing temperature T3 is 6 ° C., the power consumption can be reduced by about 4% when the temperature difference ΔT is 3 ° C. or less. it can. At this time, the temperature difference ΔT may be set to 0 ° C. As a result, when the temperature of the refrigerator compartment 3 rises above the damper opening temperature T1 due to the opening / closing of the door 3a or the like, the refrigerator compartment fan 13 is driven to rapidly bring the refrigerator compartment 3 to the fan stop temperature T2 (= damper opening temperature T1). The temperature can be lowered. For this reason, it is desirable to set the temperature difference ΔT to 0 to 3 ° C.

また、温度差ΔＴを１℃よりも小さくすると、冷蔵室３内の結露が発生する場合や、周囲温度の高温時等に冷凍室４の過冷却により消費電力量が増加する場合がある。このため、温度差ΔＴを１〜３℃にするとより望ましい。   Further, if the temperature difference ΔT is smaller than 1 ° C., dew condensation in the refrigerator compartment 3 may occur, or power consumption may increase due to overcooling of the freezer compartment 4 when the ambient temperature is high. For this reason, it is more desirable that the temperature difference ΔT is 1 to 3 ° C.

本実施形態によると、冷蔵室３がファン停止温度Ｔ２よりも降温された際に冷蔵室ファン１３を停止し、ファン停止温度Ｔ２よりも低温のダンパ閉温度Ｔ３よりも降温された際にダンパ１５を閉じる。このため、冷蔵室ファン１３の駆動によって冷蔵室３内全体に冷気を流通させて冷凍室４の過冷却を防止するとともに冷蔵室３の結露を防止することができる。また、冷蔵室３がファン停止温度Ｔ２よりも降温されるとダンパ１５を開いた状態で冷蔵室ファン１３が停止される。このため、冷蔵室３をダンパ閉温度Ｔ３まで継続して降温できるとともに冷蔵庫１の消費電力量を削減することができる。   According to this embodiment, the refrigerator compartment 13 is stopped when the temperature of the refrigerator compartment 3 is lower than the fan stop temperature T2, and the damper 15 is lowered when the temperature is lower than the damper closing temperature T3 lower than the fan stop temperature T2. Close. For this reason, by driving the refrigerator compartment fan 13, cold air can be circulated throughout the refrigerator compartment 3 to prevent overcooling of the freezer compartment 4 and to prevent condensation in the refrigerator compartment 3. Further, when the temperature of the refrigerator compartment 3 falls below the fan stop temperature T2, the refrigerator compartment fan 13 is stopped with the damper 15 opened. For this reason, the refrigerator compartment 3 can be continuously cooled to the damper closing temperature T3 and the power consumption of the refrigerator 1 can be reduced.

また、ダンパ開温度Ｔ１とファン停止温度Ｔ２との温度差ΔＴを０〜３℃にすると、確実に消費電力量を削減することができる。   Further, when the temperature difference ΔT between the damper opening temperature T1 and the fan stop temperature T2 is set to 0 to 3 ° C., the power consumption can be surely reduced.

また、冷凍室４が上限温度よりも昇温された際に圧縮機１０及び冷凍室ファン１２を駆動し、下限温度よりも降温された際に圧縮機１０及び冷凍室ファン１２を停止している。これにより、冷蔵室ファン１３を停止しても冷凍室ファン１２により確実に冷蔵室３に冷気を供給することができる。   In addition, the compressor 10 and the freezer compartment fan 12 are driven when the freezer compartment 4 is heated above the upper limit temperature, and the compressor 10 and the freezer compartment fan 12 are stopped when the temperature is lowered below the lower limit temperature. . Thereby, even if the refrigerator compartment fan 13 is stopped, the cold air can be reliably supplied to the refrigerator compartment 3 by the freezer compartment fan 12.

本発明によると、冷凍室に冷気を送出する冷凍室ファンと冷蔵室に冷気を送出する冷蔵室ファンとを備えた冷蔵庫に利用することができる。   ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator provided with the freezer compartment fan which sends cold air to a freezer compartment, and the refrigerator compartment fan which sends cold air to a refrigerator compartment.

１ 冷蔵庫
２ 断熱箱体
３ 冷蔵室
３ａ、４ａ、５ａ 扉
４ 冷凍室
５ 野菜室
６ 機械室
７ 第１冷気通路
８ 第２冷気通路
１０ 圧縮機
１１ 冷却器
１２ 冷凍室ファン
１３ 冷蔵室ファン
１５ ダンパ
２０ 制御部
２１ 操作パネル
２２ 冷凍室温度センサ
２３ 冷蔵室温度センサ
２４ 記憶部 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 3 Refrigerating room 3a, 4a, 5a Door 4 Freezer room 5 Vegetable room 6 Machine room 7 1st cold air path 8 2nd cold air path 10 Compressor 11 Cooler 12 Freezer room fan 13 Cold room fan 15 Damper DESCRIPTION OF SYMBOLS 20 Control part 21 Operation panel 22 Freezer compartment temperature sensor 23 Refrigerating room temperature sensor 24 Memory | storage part

Claims (2)

貯蔵物を冷蔵保存する冷蔵室と、貯蔵物を冷凍保存する冷凍室と、冷凍サイクルを運転する圧縮機と、前記冷凍サイクルの低温部に配されるとともに冷気を生成する冷却器と、前記冷凍室に臨む第１吐出口を開口して前記冷却器が配される第１冷気通路と、ダンパを介して第１冷気通路に連通するとともに前記冷蔵室に臨む第２吐出口を開口する第２冷気通路と、第１冷気通路に配される冷凍室ファンと、第２冷気通路に配される冷蔵室ファンと、前記冷蔵室の温度を検知する冷蔵室温度センサと、前記冷凍室の温度を検知する冷凍室温度センサとを備えた冷蔵庫において、
前記冷凍室が所定の上限温度よりも昇温された際に前記圧縮機及び前記冷凍室ファンを駆動し、
前記圧縮機及び前記冷凍室ファンの駆動時に、前記冷蔵室が所定のダンパ開温度よりも昇温された際に前記ダンパを開いて前記冷蔵室ファンを駆動し、前記ダンパ開温度に対して低温のファン停止温度よりも降温された際に前記冷蔵室ファンを停止し、前記ファン停止温度に対して低温のダンパ閉温度よりも降温された際に前記ダンパを閉じ、
前記冷凍室が所定の下限温度よりも降温された際に前記圧縮機及び前記冷凍室ファンを停止することを特徴とする冷蔵庫。 A refrigerating room for refrigerated storage, a freezer room for freezing stored storage, a compressor for operating a refrigeration cycle, a cooler disposed in a low temperature part of the refrigeration cycle and generating cold air, and the refrigeration A first cold air passage in which the first discharge port facing the chamber is opened and the cooler is disposed, and a second discharge port that communicates with the first cold air passage through the damper and faces the cold storage chamber. A cold air passage, a freezer compartment fan arranged in the first cold air passage, a refrigerating room fan arranged in the second cold air passage, a refrigerating room temperature sensor for detecting the temperature of the refrigerating room, and the temperature of the freezing room In a refrigerator equipped with a freezer temperature sensor to detect,
Driving the compressor and the freezer compartment fan when the freezer compartment is heated above a predetermined upper limit temperature,
When the compressor and the freezer compartment fan are driven, when the refrigerator compartment is heated above a predetermined damper opening temperature, the damper is opened to drive the refrigerator compartment fan, and the temperature is lower than the damper opening temperature. When the temperature is lower than the fan stop temperature, the refrigerator compartment fan is stopped, and when the temperature is lower than the low-temperature damper closing temperature , the damper is closed
The refrigerator, wherein the compressor and the freezer compartment fan are stopped when the freezer temperature is lowered below a predetermined lower limit temperature . 前記ダンパ開温度と前記ファン停止温度との温度差を０〜３℃にしたことを特徴とする請求項１に記載の冷蔵庫。   The refrigerator according to claim 1, wherein a temperature difference between the damper opening temperature and the fan stop temperature is set to 0 to 3 ° C.
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