JP4820710B2 - refrigerator - Google Patents

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JP4820710B2
JP4820710B2 JP2006209122A JP2006209122A JP4820710B2 JP 4820710 B2 JP4820710 B2 JP 4820710B2 JP 2006209122 A JP2006209122 A JP 2006209122A JP 2006209122 A JP2006209122 A JP 2006209122A JP 4820710 B2 JP4820710 B2 JP 4820710B2
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water supply
water
tank
ice making
auxiliary
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JP2008032368A (en
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正和 山本
則秋 阪本
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Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Consumer Electronics Holdings Corp
Toshiba Home Appliances Corp
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Description

本発明は、二つの被給水部に冷水を供給する給水タンクを設けた冷蔵庫に関する。   The present invention relates to a refrigerator provided with a water supply tank that supplies cold water to two water supply units.

従来、例えば、冷蔵庫に搭載された自動製氷装置は、冷蔵室内に設置された給水タンクからの製氷用水を給水ポンプを駆動して製氷空間に設置した製氷皿内に給水し、製氷が完了した場合は駆動装置により製氷皿を回転しひねることで離氷し貯氷するように制御されている。そして、製氷皿への給水は、通常、単一の給水ポンプから1本の吐出パイプを経てひとつの製氷皿に対しておこなわれる構成であった。   Conventionally, for example, an automatic ice making device installed in a refrigerator supplies ice making water from a water supply tank installed in a refrigerator compartment to an ice making tray installed in an ice making space by driving a water supply pump, and ice making is completed. Is controlled so that the ice tray is de-iced and stored by rotating and twisting the ice tray. And the water supply to an ice tray was the structure normally performed with respect to one ice tray via one discharge pipe from a single water supply pump.

これに対して、近年、複数の製氷容器を有する自動製氷装置に対して、ひとつの給水タンクに複数の吐出管を備え、給水ポンプから給水パイプを介して、複数の製氷容器のそれぞれ所定の位置に水を導き、給水するようにしたものが特許出願されている(例えば、特許文献1参照)。   In contrast, in recent years, with respect to an automatic ice making device having a plurality of ice making containers, a plurality of discharge pipes are provided in one water supply tank, and each of the plurality of ice making containers has a predetermined position via a water supply pipe. A patent application has been filed in which water is guided to the water and supplied (see, for example, Patent Document 1).

そして、上記特許文献1における実施の形態2として、図6に示すように、一つの給水ポンプ(56)から二つの給水経路(63a)(63b)を介して二つの製氷容器(52a)(52b)に給水がおこなわれるように構成し、給水ポンプ(56)の羽根車を正逆2方向に回転させることで、一方への回転では二つの給水経路のうちの一方(63a)から対応する製氷容器(52a)に給水され、他方に回転したときは他方の給水経路(63b)から対応する製氷容器(52b)に給水がおこなわれるようにしたものが記載されている。これは、給水ポンプ(56)の羽根車の回転方向を変えることにより、一つの給水ポンプ(56)で二つの製氷容器(63a)(63b)を選択して給水することができ、給水装置の構造を簡素化できるものである。
特開2003−194441公報
And as Embodiment 2 in the said patent document 1, as shown in FIG. 6, two ice-making containers (52a) (52b) from one water supply pump (56) via two water supply paths (63a) (63b) are shown. ), And the impeller of the water supply pump (56) is rotated in two forward and reverse directions, so that in one rotation, one of the two water supply paths (63a) corresponds to ice making. There is a description that water is supplied to the container (52a), and when it rotates to the other, water is supplied from the other water supply path (63b) to the corresponding ice making container (52b). This is because by changing the rotation direction of the impeller of the water supply pump (56), the two ice making containers (63a) (63b) can be selected and supplied by one water supply pump (56). The structure can be simplified.
JP 2003-194441 A

しかしながら、上記特許文献1の記載によれば、離氷後に製氷容器(52a)を水平位置まで復帰させた後、給水ポンプ(56)の羽根車を一方向に回転させ、給水タンク(55)内の製氷水を吸出管(60)を介して一方の第1給水パイプ(63a)から第1製氷容器(52a)のみに供給するように構成しているが、このとき、吸出管(60)から給水ポンプ(56)に流入した水の一部が他方側である第2給水パイプ(63b)側に浸入することは避けられないものである。   However, according to the description of Patent Document 1, after the ice making container (52a) is returned to the horizontal position after deicing, the impeller of the water supply pump (56) is rotated in one direction, and the water supply tank (55) The ice making water is supplied to only the first ice making container (52a) from the first water supply pipe (63a) through the suction pipe (60). At this time, from the suction pipe (60), It is inevitable that a part of the water flowing into the water supply pump (56) enters the second water supply pipe (63b), which is the other side.

そして、第2給水パイプ(63b)に浸入した水は第2製氷容器(52b)に至るものであり、換言すれば、第2製氷容器(52b)側に漏れ出た分の水量が第1製氷容器(52a)の製氷水量として不足することになり、定量給水ができなくなる不具合があるとともに、第2製氷容器(52b)としては、望んでいない水量が流入することで、既に凍結状態にある場合には、その氷粒上に給水されることで氷が融解したり、また、過給水となったり、あるいは、製氷容器内の水量として不足した状態のまま凍結することになるなど製氷容器への定量給水ができなくなる問題も生じることになる。   The water that has entered the second water supply pipe (63b) reaches the second ice making container (52b). In other words, the amount of water leaked to the second ice making container (52b) is the first ice making container. When the amount of ice-making water in the container (52a) is insufficient, there is a problem that fixed-quantity water supply cannot be performed, and the second ice-making container (52b) is already in a frozen state due to inflow of an undesired amount of water. In this case, the ice is melted by supplying water on the ice particles, it becomes supercharged water, or it is frozen while the amount of water in the ice making container is insufficient. There will also be a problem that the fixed amount of water cannot be supplied.

本発明は上記の事情を考慮してなされたものであり、簡単な構成で、単一の給水ポンプから複数の被給水部への給水を可能として使い勝手を向上するとともに、被給水部の一方のみへ給水できるようにした冷蔵庫を提供することを目的とする。   The present invention has been made in consideration of the above circumstances, and with a simple configuration, it is possible to supply water from a single water supply pump to a plurality of water supply units, improving usability, and only one of the water supply units. The purpose is to provide a refrigerator that can supply water.

上記の課題を解決するために、本発明の冷蔵庫は、冷蔵貯蔵空間に設置された給水タンクと、前記給水タンクからの給水を受ける二つの被給水部と、前記給水タンク内の水を前記二つの被給水部のそれぞれに給水する単一の給水ポンプと、この給水ポンプと前記各被給水部との間に位置して給水ポンプからの水を貯留する二つの補助タンクとからなり、被給水部への給水時には、前記給水ポンプの正逆回転駆動により給水タンク内の水を前記二つの補助タンクのいずれかに流入させ、所定量貯留後に各々対応する被給水部に所定の水量を吐出するようにし、これらの補助タンクは、給水タンクの上部に設置して、被給水部への吐出パイプの開口を補助タンクの上方に開口し、これらの補助タンクの底部には給水タンク内に連通する水戻し透孔を穿設し、前記給水ポンプが正回転駆動されると給水タンク内の水が一方の補助タンク内に揚水され、前記吐出パイプの開口から吐出して被給水部内に給水され、前記給水ポンプの駆動が停止すると、前記一方の補助タンク内に残存する水が前記水戻し透孔を介して給水タンクに戻り、前記給水ポンプが逆回転駆動されると、前記一方の補助タンク内に流入した水は吐出パイプの開口にまで至らず、この補助タンク内に残存する水は前記水戻し透孔を介して給水タンク内に戻ることを特徴とするものである。 In order to solve the above problems, a refrigerator according to the present invention includes a water supply tank installed in a refrigerated storage space, two water supply units that receive water supplied from the water supply tank, and water in the water supply tank. A single water supply pump that supplies water to each of the two water supply units, and two auxiliary tanks that are located between the water supply pump and each of the water supply units and store water from the water supply pump. When water is supplied to a section, water in the water supply tank is caused to flow into one of the two auxiliary tanks by forward / reverse rotation driving of the water supply pump, and a predetermined amount of water is discharged to a corresponding water supply section after storing a predetermined amount. Thus, these auxiliary tanks are installed in the upper part of the water supply tank, the opening of the discharge pipe to the water supply part is opened above the auxiliary tank, and the bottom part of these auxiliary tanks communicates with the water supply tank. Water return through hole When the water supply pump is driven to rotate in the forward direction, the water in the water supply tank is pumped into one auxiliary tank, discharged from the opening of the discharge pipe and supplied into the water supply portion, and the water supply pump is driven. Is stopped, the water remaining in the one auxiliary tank returns to the water supply tank through the water return through hole, and when the water supply pump is driven in reverse rotation, the water flowing into the one auxiliary tank is The water that does not reach the opening of the discharge pipe and remains in the auxiliary tank returns to the water supply tank through the water return through hole .

この構成によって、単一の給水ポンプによって複数の被給水部への給水をおこなうとともに、一方の被給水部のみへ給水して他方の給水部への水漏れを阻止できる使い勝手のよい給水機構をシンプルな構造で、コンパクトに、且つ安価に得ることができる。   With this configuration, a simple water supply mechanism that can supply water to multiple water supply units with a single water supply pump and supply water to only one water supply unit to prevent water leakage to the other water supply unit. With a simple structure, it can be obtained in a compact and inexpensive manner.

以下、図面に基づき本発明の1実施形態について説明する。図1は、冷蔵庫(1)の縦断面図であり、外箱(2)の内面に断熱材(3)を介して設けた内箱(4)により貯蔵空間を形成し、断熱仕切壁(5)により複数の貯蔵空間に区分している。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a refrigerator (1), in which a storage space is formed by an inner box (4) provided via a heat insulating material (3) on the inner surface of an outer box (2), and a heat insulating partition wall (5 ) To divide into multiple storage spaces.

貯蔵空間の最上部には最も使用頻度が多く収納容積も大きい冷蔵室(6)を配置しており、この冷蔵室(6)は、本体の左右にそれぞれ設けたヒンジによって回動自在に枢支する左右の扉(7)でその前面開口部を開閉自在に閉塞している。   A refrigeration room (6) that is used most frequently and has a large storage capacity is arranged at the top of the storage space. The refrigeration room (6) is pivotally supported by hinges provided on the left and right sides of the main body. The left and right doors (7) close the front opening so as to be freely opened and closed.

冷蔵室(6)の下部には、断熱仕切壁(5)を介して比較的小容積の製氷室(8)と図示しない温度切替室とを併設しており、その下方には、前記同様の断熱仕切壁を介して野菜などを収納する野菜室(9)を形成し、最下部には、冷凍食品を収納する冷凍室(10)を配している。上記冷蔵室(6)以外のこれら貯蔵室は、その前面開口を閉塞する扉の庫内側に支持枠を設け、この支持枠に保持した収納容器を各貯蔵室側壁に配置したレールによって前後摺動可能とした引き出し方式としている。   A relatively small-capacity ice making chamber (8) and a temperature switching chamber (not shown) are provided in the lower part of the refrigerator compartment (6) via a heat insulating partition wall (5). A vegetable room (9) for storing vegetables and the like is formed through a heat insulating partition wall, and a freezing room (10) for storing frozen food is arranged at the bottom. These storage chambers other than the refrigerator compartment (6) are provided with a support frame inside the door that closes the front opening thereof, and the storage containers held on the support frame slide back and forth by rails arranged on the side walls of the storage chambers. The drawer system is made possible.

前記製氷室(8)には自動的に氷粒を生成する2個の製氷皿(12a)(12b)を併設した自動製氷装置(11)および生成された氷粒を収納する貯氷箱(13)を設置しており、製氷皿(12a)あるいは(12b)での製氷が完了した場合は、これを回転してひねることで離氷した氷粒を下方の貯氷箱(13)に落下させ貯氷するものであり、空になった製氷皿(12a)あるいは(12b)に対しては、前記冷蔵室(6)の底部の所定位置に設置した給水タンク(15)から給水する。   The ice making chamber (8) includes an automatic ice making device (11) provided with two ice trays (12a) (12b) that automatically generate ice particles, and an ice storage box (13) for storing the generated ice particles. When ice making is completed in the ice tray (12a) or (12b), the ice particles that have been deiced by rotating and twisting are dropped into the ice storage box (13) below to store ice. The empty ice tray (12a) or (12b) is supplied from a water supply tank (15) installed at a predetermined position at the bottom of the refrigerator compartment (6).

その縦断面図を図2に、図2のA−A線に沿う断面図を図3に、図4に斜視図で示す前記給水タンク(15)は、透明の合成樹脂で容器状に形成されており、冷蔵室(6)の所定位置に設置することによって、その後壁に近接して配置した給水ポンプ(16)が、冷蔵室底部に取り付けたモーター(17)と対向するように位置決めされる。   FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and the water supply tank (15) shown in a perspective view of FIG. 4 is formed in a container shape with a transparent synthetic resin. By installing it at a predetermined position in the refrigerator compartment (6), the water supply pump (16) disposed close to the rear wall is positioned so as to face the motor (17) attached to the bottom of the refrigerator compartment. .

前記給水ポンプ(16)は、片面にマグネット(18)を固着したインペラ(19)と、インペラ(19)を収納するケーシング(20)と、インペラ(19)を回転させる駆動源である前記モーター(17)とから構成されており、前記インペラ(19)のマグネット(18)に対向する側の回転軸にマグネット(21)を設けたモーター(17)の駆動によるマグネットの回転力を、非接触のマグネットカップリング方式で給水ポンプ(16)のマグネットに伝導し、インペラ(19)を回転させて給水タンク(15)内の水を汲み出すものである。   The water supply pump (16) includes an impeller (19) having a magnet (18) fixed on one side thereof, a casing (20) that houses the impeller (19), and a motor that is a drive source for rotating the impeller (19) ( 17), and the rotational force of the magnet driven by the motor (17) provided with the magnet (21) on the rotating shaft on the side facing the magnet (18) of the impeller (19) is non-contacted. The magnet coupling method is conducted to the magnet of the water supply pump (16), and the impeller (19) is rotated to pump out water in the water supply tank (15).

前記モーター(17)は正逆2方向への回転を可能にしたものであり、これにともなって、給水ポンプ(16)のインペラ(19)も正逆2方向に回転して両方向への同量の揚水をおこなうように形成されている。そして、インペラ(19)上方のケーシング(20)には、図5に示すように、二つの吐出口(22a)(22b)を設けており、この吐出口(22a)(22b)にはそれぞれ上方に延びる揚水パイプ(23a)(23b)を連結して、その上端を前記給水タンク(15)の上方を覆うように設置した補助タンク(25a)(25b)の底部と接続している。   The motor (17) is capable of rotating in both forward and reverse directions. Accordingly, the impeller (19) of the water supply pump (16) is also rotated in both forward and reverse directions and the same amount in both directions. It is formed to pump up water. As shown in FIG. 5, the casing (20) above the impeller (19) is provided with two discharge ports (22a) and (22b). Are connected to the bottom of the auxiliary tanks (25a) (25b) installed so as to cover the upper side of the water supply tank (15).

給水タンク(15)の上面にはキャップで閉塞される注水口(26)を形成するとともに、前記給水ポンプ(16)の上方に対応する面は開口させ、この開口を前記補助タンク(25a)(25b)で閉塞しているものであり、補助タンク(25)は、給水タンク(15)の長手方向に沿って容器部を2列に並べて設け、給水ポンプ(16)のポンプ部から延びる2本の揚水パイプ(23a)(23b)を接続するとともに、その後壁の上方部位には、そこまで水位が上昇した補助タンク(25a)(25b)内の水をそれぞれ外方に吐出する開口を形成し、これに外方に延出する吐出パイプ(26a)(26b)の一端を接続している。   A water inlet (26) closed by a cap is formed on the upper surface of the water supply tank (15), and a surface corresponding to the upper side of the water supply pump (16) is opened, and this opening is opened to the auxiliary tank (25a) ( 25b), the auxiliary tank (25) is provided with two container parts arranged in two rows along the longitudinal direction of the water supply tank (15) and extending from the pump part of the water supply pump (16). In addition to connecting the pumping pipes (23a) and (23b), the upper part of the rear wall is formed with openings for discharging the water in the auxiliary tanks (25a) and (25b) whose water levels have risen to the outside. One end of the discharge pipe (26a) (26b) extending outward is connected to this.

吐出パイプ(26a)(26b)の他端の先端部には、それぞれ水受け部(27)が設けられ、これから各給水管(28)を介して前記2個の製氷皿(12a)(12b)にそれぞれ給水されるように構成されている。   At the tip of the other end of the discharge pipe (26a) (26b), a water receiving part (27) is provided, respectively, and the two ice trays (12a) (12b) are connected through the water supply pipes (28). It is comprised so that each may be supplied with water.

また、前記補助タンク(25a)(25b)の底部には、給水タンク(15)内に連通する水戻し透孔(29)をそれぞれ穿設している。この水戻し透孔(29a)(29b)は、補助タンク(25a)(25b)内から製氷皿(12a)(12b)などへの被給水部への水の供給動作後に補助タンク(25a)(25b)内に残留する水をそれぞれ給水タンク(15)内に戻すものであって、前記給水ポンプ(16)の駆動による吐出水量への影響を可能な限り少なくするため、前記揚水パイプ(23a)(23b)が接続される開口径より充分に小さいな微小口としている。   Further, water return through holes (29) communicating with the inside of the water supply tank (15) are formed in the bottom portions of the auxiliary tanks (25a) and (25b), respectively. The water return through holes (29a) and (29b) are connected to the auxiliary tanks (25a) and (25b) after the operation of supplying water from the auxiliary tanks (25a) and (25b) to the water tray to the ice trays (12a) and (12b). 25b) returns the water remaining in the water supply tank (15) to the pumping pipe (23a) in order to minimize the influence on the discharged water amount by driving the water supply pump (16). (23b) is a minute opening sufficiently smaller than the opening diameter to be connected.

次に、前記二つの製氷皿(12a)および製氷皿(12b)への給水作用について説明する。今、例えば、製氷皿(12a)における製氷が完了した時点で貯氷箱(13)内が満氷状態でない場合には、駆動装置により製氷皿(12a)を回転しひねることで離氷させ、製氷皿(12a)をふたたび水平位置に戻した状態で給水指示により、モーター(17)が所定時間に亙って正回転、例えば右回転する。モーター(17)の駆動により、給水ポンプ(16)のインペラ(19)が非接触のマグネット間の駆動伝達によって右回転することで、給水タンク(15)内の水は、吸込み口(30)からケーシング(20)内に吸い込まれ、回転するインペラ(19)によって、図3中左側の揚水パイプ(23a)から補助タンク(25a)側に揚水される。   Next, the water supply action to the two ice trays (12a) and the ice tray (12b) will be described. Now, for example, when the ice storage box (13) is not full when the ice making in the ice tray (12a) is completed, the ice tray (12a) is rotated and twisted by the drive device to separate the ice, In response to the water supply instruction with the plate (12a) returned to the horizontal position, the motor (17) rotates forward, for example, clockwise, over a predetermined time. When the motor (17) is driven, the impeller (19) of the water supply pump (16) is rotated clockwise by the drive transmission between the non-contact magnets, so that the water in the water supply tank (15) is drawn from the suction port (30). Water is sucked into the casing (20) and pumped from the pumping pipe (23a) on the left side in FIG. 3 to the auxiliary tank (25a) by the rotating impeller (19).

補助タンク(25a)内へ流入する水が増え、タンク内の水位が上昇して吐出パイプ(26a)の一端開口部に至った時点で、水は吐出パイプ(26a)から外方に吐出され、水受け部(27a)から給水管(28a)を経由して製氷皿(12a)内に給水されるものである。給水時間が完了した場合は、モーター(17)の停止により給水ポンプ(16)の駆動が停止することで補助タンク(25a)への揚水がなくなり、製氷皿(12a)への給水を停止するとともに、補助タンク(25a)内に残存する水は、水戻し透孔(29a)を介して下方の給水タンク(15)に戻っていく。   When the water flowing into the auxiliary tank (25a) increases and the water level in the tank rises and reaches one end opening of the discharge pipe (26a), the water is discharged outward from the discharge pipe (26a), Water is supplied from the water receiver (27a) into the ice tray (12a) through the water supply pipe (28a). When the water supply time is completed, the pump of the water supply pump (16) is stopped by stopping the motor (17), so that there is no pumping to the auxiliary tank (25a), and water supply to the ice tray (12a) is stopped. The water remaining in the auxiliary tank (25a) returns to the lower water supply tank (15) through the water return through hole (29a).

給水時、揚水パイプ(23a)に対向する揚水パイプ(23b)には、インペラ(19)が右回転していることから、ほとんど水は入り込まないが、それでもケーシング(20)内の圧力によってわずかの量は揚水され、補助タンク(25b)内に流入する。しかしながら、流入量はわずかであることから上方の吐出パイプ(26b)への開口にまで上昇するには至らず、外方へ吐出されることはない。そして、流入した水量は、補助タンク(25a)内の残存水と同様に、補助タンク(25b)の底部に穿設した水戻し透孔(29b)から給水タンク(15)内に流下して戻ることになる。   At the time of water supply, the impeller (19) rotates clockwise in the pumping pipe (23b) facing the pumping pipe (23a), so that almost no water enters, but it still remains slightly due to the pressure in the casing (20). The amount is pumped and flows into the auxiliary tank (25b). However, since the amount of inflow is small, it does not rise to the opening to the upper discharge pipe (26b) and is not discharged outward. The amount of water that has flowed in flows back into the water supply tank (15) from the water return through hole (29b) drilled in the bottom of the auxiliary tank (25b), similarly to the remaining water in the auxiliary tank (25a). It will be.

給水のためのモーター(17)に駆動時間は、補助タンク(25a)内で吐出パイプ(26a)に至るまでに貯留される時間、および前記補助タンク(25b)側に漏れ出る水量分を除いた製氷皿(12a)に所定量の水、例えば100ccを供給するだけの時間、例えば5秒間程度の時間を設定するものである。   The drive time for the motor (17) for water supply excludes the time that is required to reach the discharge pipe (26a) in the auxiliary tank (25a) and the amount of water that leaks to the auxiliary tank (25b) side. The time for supplying a predetermined amount of water, for example, 100 cc, to the ice tray (12a), for example, about 5 seconds is set.

さらに、吐出水量は給水タンク(15)内の水位にも影響されるため、これを考慮して、あらかじめ水位による吐出水量の差を計算しておき、水位センサーによる水位によって、例えば、水位が低い場合は、モーター(17)の回転駆動時間を長くするなど調整するようにすれば、給水タンク内の水量に拘わらず各製氷皿(12)への定量給水を実行することができる。   Furthermore, since the discharge water amount is also affected by the water level in the water supply tank (15), the difference in the discharge water amount due to the water level is calculated in advance in consideration of this, and the water level is low, for example, depending on the water level by the water level sensor. In this case, if the motor (17) is adjusted so as to increase the rotational drive time, it is possible to execute a fixed amount of water supply to each ice tray (12) regardless of the amount of water in the water supply tank.

したがって、補助タンク(25a)(25b)の貯留水量は定量である必要はなく、前記したように、給水ポンプ(16)の2方向への回転によって、給水対象以外の補助タンク(25)に漏れ出る水量以上の貯留量があればよいため、給水タンク(15)部分に占める容積を大きく必要とせず、給水タンク(15)容量への影響を少なくすることができ、また、冷蔵室内容積を減少することもない。   Therefore, the amount of water stored in the auxiliary tanks (25a) and (25b) does not need to be fixed, and as described above, the water supply pump (16) rotates in two directions and leaks into the auxiliary tank (25) other than the water supply target. Since it is sufficient if there is a storage amount that exceeds the amount of water that comes out, it is not necessary to increase the volume occupied by the water tank (15), and the impact on the water tank (15) capacity can be reduced, and the volume in the refrigerator compartment is reduced. I don't have to.

そして、製氷皿(12a)への水供給が終わった場合には、モーター(17)は停止し、待機状態となるが、その際に、他方の製氷皿(12b)の製氷も完了した場合には、制御系からの新たな給水指示によりモーター(17)が所定時間に亙ってこの場合は左方向に回転し、給水ポンプ(16)のインペラ(19)を左回転させることで、揚水パイプ(23b)内を通って補助タンク(25b)に水を供給し、貯留により水位を上げて吐出パイプ(26)から製氷皿(12b)へ所定量を給水する。   When the water supply to the ice tray (12a) is finished, the motor (17) stops and enters a standby state. At that time, when the ice making of the other ice tray (12b) is also completed. In response to a new water supply instruction from the control system, the motor (17) rotates to the left for a predetermined time, and the impeller (19) of the water supply pump (16) rotates to the left, thereby raising the pump pipe. (23b) The water is supplied to the auxiliary tank (25b) through the interior, the water level is raised by storage, and a predetermined amount of water is supplied from the discharge pipe (26) to the ice tray (12b).

このときには、前記とは逆に、揚水パイプ(23a)にわずかの水が進入し補助タンク(25a)内に流入するが、上方の吐出パイプ(26a)への開口にまでは至らず、前記と同様に、補助タンク(25a)の底部に穿設した水戻し透孔(29a)から補助タンク(25b)の残存水とともに給水タンク(15)内に流下して戻る。   At this time, contrary to the above, a small amount of water enters the pumping pipe (23a) and flows into the auxiliary tank (25a), but does not reach the opening to the upper discharge pipe (26a). Similarly, it flows down into the water supply tank (15) along with the remaining water in the auxiliary tank (25b) from the water return through hole (29a) formed in the bottom of the auxiliary tank (25a).

以上の構成により、給水タンク(15)から製氷皿(12a)(12b)への給水動作は、単一の給水ポンプ(16)から2方向に揚水パイプ(23a)(23b)を設けたものであっても、揚水された水を一旦補助タンク(25a)(25b)内に貯留してから吐出するように構成したので、製氷皿(12a)(12b)への給水は、確実に製氷対象となる製氷皿のみへの供給となり、定量給水をおこなうことができる。   With the above configuration, the water supply operation from the water supply tank (15) to the ice tray (12a) (12b) is provided with pumping pipes (23a) (23b) in two directions from a single water supply pump (16). Even so, the pumped water is once stored in the auxiliary tank (25a) (25b) and then discharged, so that the water supply to the ice trays (12a) (12b) It becomes supply only to the ice tray which becomes and can perform fixed quantity water supply.

そして、2方向に設けた揚水パイプ(23)の対象とする一方側のみでなく他方側に一部の水が進入しても、所定の製氷皿(12)に対する製氷水量が不足したり、また、給水を求められていない方の製氷皿に水の一部が流入することがなく、既凍結状態にある氷粒上への注水により氷が融解したり、あるいは製氷水が多過ぎて過給水となるようなことがない。さらに、空の製氷皿内にわずかに給水された状態で製氷運転に入ることで、水量が不足した状態のまま凍結することになるなどの不具合をなくすことができる。   Even if a part of the water enters not only one side of the pumping pipe (23) provided in two directions but also the other side, the amount of ice making water for the predetermined ice tray (12) is insufficient, If the water is not required, water will not partially flow into the ice tray. There is no such thing as. Furthermore, by entering the ice making operation with a slight amount of water supplied to an empty ice tray, it is possible to eliminate problems such as freezing while the amount of water is insufficient.

なお、上記実施例においては、製氷室(8)に設置された二つの製氷皿(12a)(12b)に対する給水構成について説明したが、本発明はそれだけに限らないものであり、例えば、製氷皿への給水用とともに、冷蔵室扉などに設置して、扉表面の操作で開扉することなく冷水を供給することができる冷水ディスペンサ用などの被給水部であってもよいものである。また、給水タンク(15)からの給水の他の一方を、野菜室(9)を加湿するための水補給部を被給水部として製氷用と交互に給水するようにしてもよいなど種々の展開をはかることができるものである。   In addition, in the said Example, although the water supply structure with respect to the two ice trays (12a) (12b) installed in the ice making chamber (8) was demonstrated, this invention is not restricted only to it, For example, to an ice tray In addition to the water supply, a water supply unit such as a cold water dispenser that can be installed on a refrigerator door or the like and can supply cold water without opening the door by operating the door surface may be used. In addition, various other developments may be made such that water supply from the water supply tank (15) may be supplied alternately to that for ice making using a water supply portion for humidifying the vegetable compartment (9) as a water supply portion. It can be measured.

本発明の1実施形態を示す冷蔵庫の縦断面図である。It is a longitudinal cross-sectional view of the refrigerator which shows one Embodiment of this invention. 図1における冷蔵庫の給水タンク部分の縦断面図である。It is a longitudinal cross-sectional view of the water supply tank part of the refrigerator in FIG. 図2のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 図2の給水タンクを示す斜視図である。It is a perspective view which shows the water supply tank of FIG. 給水ポンプ部分の正面からの断面図である。It is sectional drawing from the front of a water supply pump part. 従来例の自動製氷装置を示す正面概略図である。It is the front schematic which shows the automatic ice making apparatus of a prior art example.

符号の説明Explanation of symbols

1 冷蔵庫 6 冷蔵室 8 製氷室 11 自動製氷装置 12a、12b 製氷皿 13 貯氷箱
15 給水タンク 16 給水ポンプ 17 モーター
19 インペラ 20 ケーシング 22a、22b 吐出口
23a、23b 揚水パイプ 25a、25b 補助タンク 26a、26b 吐出パイプ
27 水受け部 28 給水管 29a、29b 水戻し透孔
30 吸込み口
1 Refrigerator 6 Cold room 8 Ice making room 11 Automatic ice making device 12a, 12b Ice making tray 13 Ice storage box
15 Water tank 16 Water pump 17 Motor
19 Impeller 20 Casing 22a, 22b Discharge port
23a, 23b Pumping pipe 25a, 25b Auxiliary tank 26a, 26b Discharge pipe
27 Water receiver 28 Water supply pipe 29a, 29b Water return through hole
30 Suction port

Claims (4)

冷蔵貯蔵空間に設置された給水タンクと、前記給水タンクからの給水を受ける二つの被給水部と、前記給水タンク内の水を前記二つの被給水部のそれぞれに給水する単一の給水ポンプと、この給水ポンプと前記各被給水部との間に位置して給水ポンプからの水を貯留する二つの補助タンクとからなり、被給水部への給水時には、前記給水ポンプの正逆回転駆動により給水タンク内の水を前記二つの補助タンクのいずれかに流入させ、所定量貯留後に各々対応する被給水部に所定の水量を吐出するようにし、これらの補助タンクは、給水タンクの上部に設置して、被給水部への吐出パイプの開口を補助タンクの上方に開口し、これらの補助タンクの底部には給水タンク内に連通する水戻し透孔を穿設し、
前記給水ポンプが正回転駆動されると給水タンク内の水が一方の補助タンク内に揚水され、前記吐出パイプの開口から吐出して被給水部内に給水され、
前記給水ポンプの駆動が停止すると、前記一方の補助タンク内に残存する水が前記水戻し透孔を介して給水タンクに戻り、
前記給水ポンプが逆回転駆動されると、前記一方の補助タンク内に流入した水は吐出パイプの開口にまで至らず、この補助タンク内に残存する水は前記水戻し透孔を介して給水タンク内に戻ることを特徴とする冷蔵庫。
A water supply tank installed in a refrigerated storage space; two water supply units that receive water from the water supply tank; and a single water supply pump that supplies water in the water supply tank to each of the two water supply units. The water supply pump includes two auxiliary tanks that are located between the water supply pumps and each of the water supply units, and store water from the water supply pumps. The water in the water supply tank is allowed to flow into one of the two auxiliary tanks , and a predetermined amount of water is discharged to each corresponding water supply section after storing a predetermined amount. These auxiliary tanks are installed above the water supply tank. Then, the opening of the discharge pipe to the water supply part is opened above the auxiliary tank, and a water return through hole communicating with the inside of the water supply tank is formed at the bottom of these auxiliary tanks,
When the water supply pump is driven to rotate forward, the water in the water supply tank is pumped into one auxiliary tank, discharged from the opening of the discharge pipe and supplied into the water supply portion,
When driving of the water supply pump is stopped, water remaining in the one auxiliary tank returns to the water supply tank through the water return through hole,
When the water supply pump is driven in reverse rotation, the water flowing into the one auxiliary tank does not reach the opening of the discharge pipe, and the water remaining in the auxiliary tank passes through the water return through hole. A refrigerator characterized by returning to the inside .
給水タンクには水位検出装置を設け、水位の低下とともに給水ポンプの駆動時間を長くするように制御することを特徴とする請求項1記載の冷蔵庫。   2. The refrigerator according to claim 1, wherein a water level detection device is provided in the water supply tank, and control is performed so that the driving time of the water supply pump is increased as the water level decreases. 二つの被給水部は、製氷空間に配置され、前記給水タンクからの給水を受けて製氷をおこなう自動製氷装置における製氷容器であることを特徴とする請求項1記載の冷蔵庫。   2. The refrigerator according to claim 1, wherein the two water supply parts are ice making containers in an automatic ice making device that is arranged in an ice making space and produces ice by receiving water supplied from the water supply tank. 二つの被給水部は、製氷空間に配置された前記給水タンクからの給水を受けて製氷をおこなう自動製氷装置における製氷容器と、冷蔵空間の扉面に設置された冷水供給部であることを特徴とする請求項1記載の冷蔵庫。   The two water supply parts are an ice making container in an automatic ice making device that makes ice by receiving water from the water supply tank arranged in the ice making space, and a cold water supply part installed on the door surface of the refrigeration space The refrigerator according to claim 1.
JP2006209122A 2006-07-31 2006-07-31 refrigerator Expired - Fee Related JP4820710B2 (en)

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