200813381 (1) 九、發明說明 【發明所屬的技術領域】 本發明是關於電冰箱，在用來將藉由冷卻器所產生的 冷氣輸送到儲藏室的管道內，具備有用來控制冷氣的流通 的氣門裝置。 【先前技術】 習知的家庭用的電冰箱，在電冰箱主體的背壁部的靠 近下部部位，設置有冷卻器室，該冷卻器室具備有冷卻 器，並且設置有：從該冷卻器室朝上方延伸，用來將所產 生的冷氣輸送到儲藏室（例如切換室）的管道。在上述管 道，組裝有氣門裝置，該氣門裝置用來控制，供給到儲藏 室的冷氣的流通情形（例如參照專利文獻1)。 第10圖是顯示這種氣門裝置1的外觀。也就是說， 該氣門裝置1，是將下述構造一體地作成組件化構造：配 置成將管道分隔（封閉）爲上下的框架部2、將形成於該框 架部2的開口部2a予以開閉的擋板4、以及用來轉動該 擋板4的驅動機構部3。上述驅動機構部3，在作成稍縱 長的矩形箱狀的合成樹脂製的殼體6內，組裝入氣門馬達 7或齒輪機構（沒有圖示）。而且將旋轉軸8轉動驅動，該 旋轉軸8是設置成：從殻體6之中朝向管道的內側的內側 面6a的下部後端部起水平地突出。 上述擋板4是以合成樹脂作成矩形板狀，而連結於上 述旋轉軸8。在該擋板4的內面部（下面部），設置有：當 (2) (2)200813381 封閉框架部2的開口部2a時，會緊貼於開口部2a的周圍 部的密封構件5。上述框架部2，是以合成樹脂作成矩形 框狀，且以從上述驅動機構部3的殼體6的內側面6a的 下部起，朝內側方向水平延伸的方式，一體地設置於該殼 體6。 該組件化的氣門裝置1，雖然沒有圖示，而上述驅動 機構部3是組裝成嵌入到，構成管道的壁部的隔熱材的凹 部內。此時，上述殼體6的內側面6a是配置成面對於管 道內。上述氣門馬達7，藉由控制裝置（沒有圖示）所進行 的通電控制，使擋板4開閉作動，而從管道控制朝向儲藏 室內的冷氣流通情形。 [專利文獻1] 日本特開平1 0 — 205957號公報 【發明內容】 [發明欲解決的課題] 在上述的電冰箱，因爲冷卻器經常結霜而讓冷卻效率 降低。因此，例如會定期性地（當累計運轉時間到達預定 時間時），停止冷卻運轉，進行通電到除霜加熱器的除霜 運轉。在該除霜運轉，會藉由加熱器的熱讓冷卻器的霜融 化，而會在冷卻器室內及管道內，充滿了較高溫的濕潤的 空氣。 儲藏室側與冷卻器比較起來溫度較低，並且在上述習 知的氣門裝置1，雖然幾乎所有構件是由合成樹脂所構 -6 - (3) 200813381 成，而在殼體6內，內置有氣門馬達7,該氣門馬達7具 有金屬製的馬達框架，所以該部分的熱容量較其他部分更 大，即使在除霜運轉時也會有溫度不太上昇的情形（持續 低溫狀態）。因此，在除霜運轉結束後的擋板4開放時， 在殻體6的內側面6a部分產生凝結現象，該凝結水流下 來會積聚在旋轉軸8部分。而當凝結水積聚在旋轉軸8附 近時，在除霜後的冷卻運轉，會讓該水凍結，而在旋轉軸 φ 8可能會對擋板4的開閉動作造成障礙。 爲了防止該氣門裝置1的凝結情形，也有嘗試安裝： 用來將驅動機構部3的殼體6加熱的加熱器，例如在鋁箔 貼上電熱線的面加熱器。可是，會因爲增加加熱器而讓構 造複雜化，而會有導致成本上昇的缺失。 本發明鑒於該情形，其目的要提供一種電冰箱，在管 道內設置有氣門裝置，以簡單且廉價的構造，能防止氣門 裝置產生凝結，進而防止擋板凍結。 [用以解決課題的手段] 爲了達成上述目的，本發明的電冰箱，在用來將冷卻 器所產生的冷氣輸送到儲藏室的管道內，具備有··將氣門 馬達作爲驅動源來使擋板開閉的氣門裝置，藉由對於上述 氣門馬達的通電控制，使擋板開閉作動來控制冷氣的流 通，設置有：在上述擋板的開閉動作之外，對於上述氣門 馬達’不伴隨該擋板的開閉動作而進行自己發熱用的通電 的通電控制手段。 (4) 200813381 [發明效果] 藉由本發明的電冰箱，是在管道內設置有氣門裝置， 設置有：在擋板的開閉動作之外，對於氣門馬達，進行自 己發熱用的通電的通電控制手段；能達到：以簡單且廉價 的構造，來防止氣門裝置的凝結進而防止擋板凍結這樣優 異的效果。 【實施方式】 以下，針對本發明的一實施例，參照第1圖〜第8圖 來加以說明。首先，第2圖顯示本實施例的電冰箱的主體 1 1的構造。該電冰箱主體1 1，是將隔熱箱體1 2內，藉由 隔熱壁12a、12b、12c上下分隔，從上段起，依序設置 有：冷藏室13、製冰室14、蔬果室15、冷凍室16。上述 製冰室14，是與切換室17(參照第3圖）一起左右並排設 # 置。該切換室1 7，可藉由使用者的操作來切換複數的溫 度帶’而可切換成：冷凍室、局部室、急冷室、冷藏室 等。第3圖是顯示與第2圖的左右方向的位置相異的剖 面。 在上述冷藏室1 3的前面部，設置有鉸鏈開閉式的門 部1 8，在製冰室丨4、蔬果室1 5、冷凍室1 6的前面部， 分別設置有抽出式的門部1 9、20、2 1。在上述門部1 9的 背面部’連結有儲水容器22，在門部20、2 1的背面部， 分別連結著儲存容器23、24。在上述冷藏室13內，設置 -8- (5) (5)200813381 有用來檢測該冷藏室1 3內的溫度的冷藏室溫度感應器 2 5，在上述冷凍室1 6內，設置有用來檢測該冷凍室1 6內 的溫度的冷凍室溫度感應器26。並且在上述切換室1 7 內，設置有用來檢測該切換室1 7內的溫度的切換室溫度 感應器27(參照第6圖）。 如第3圖所示，在上述蔬果室15的背壁部，是重疊 有前後兩層地設置有冷藏室用冷卻器室28及冷凍室用冷 卻器室29。而也如第7圖所示，在上述冷藏室用冷卻器 室2 8內，設置有：用來將上述冷藏室1 3及蔬果室15予 以冷卻的冷藏室用冷卻器30及冷藏用送風風扇31。而在 上述冷凍室用冷卻器室29內，設置有：用來將冷凍室16 及製冰室1 4及切換室1 7予以冷卻的冷凍室用冷卻器3 2 及冷凍用送風風扇33(參照第3圖）。雖然沒有詳細圖示， 而冷藏室用冷卻器30及冷藏用送風風扇31、與冷凍室用 冷卻器32及冷凍用送風風扇33，是設置在左右錯開的位 置。而在上述冷凍室用冷卻器20，增設有除霜用加熱器 34(僅圖示於第6圖）。 如第2圖所示，當驅動上述冷藏用送風風扇3 1時， 以冷藏室用冷卻器30所產生的冷氣，其循環是從冷藏室 用冷卻器室28的上部，通過送風管道35，從複數的吹出 口供給到冷藏室1 3內，並且在供給到蔬果室1 5內之後， 回到冷藏室用冷卻器室28的下部。而冷藏室1 3及蔬果室 1 5內，是以例如3 °C〜5 °C的冷藏溫度帶加以冷卻。 如第3圖所示，當驅動冷凍用送風風扇3 3時，以冷 -9 - 200813381 (6) 凍室用冷卻器3 2所產生的冷氣，其循環是從冷凍室用冷 卻器室29的上部，通過管道36，供給到製冰室14(及切 換室1 7)，並且在供給到冷凍室1 6之後，回到冷凍室用 冷卻器室29的下部。而冷凍室1 6及製冰室1 4，是以例 ^ 如- 1 8 °C以下的冷凍溫度帶加以冷卻。此時，在上述管道 3 6內，配設有：用來控制對於切換室1 7內的冷氣的控制 (將管道3 6的通路予以開閉）的氣門裝置3 7。後面會針對 φ 該氣門裝置3 7加以敘述。 在該電冰箱主體1 1內，組裝有冷凍回路38(參照第7 圖）。此時，如第2圖所示，在電冰箱主體1 1的下端部背 面側，設置有機械室3 9，在該機械室3 9內，配設有：壓 縮機40及凝結器41、及用來將其冷卻的冷卻風扇42(參 照第6圖、第7圖）等。 如第 7圖所示，該冷凍回路3 8，是將上述壓縮機 40、上述凝結器（冷凝器）41、具有一個入口 43a與第一及 # 第二的兩個出口 43b及43c的三向閥所構成的切換閥 43、 與該切換閥43的第一出口 43b連接的第一毛細管 44、 上述冷凍室用冷卻器32、儲壓器45、單向閥46，依 序藉由冷媒管連接成封閉回路，並且在上述切換閥43的 第二出口 43c、上述單向閥46與壓縮機40的連接點之 間’將弟一毛細管47及上述冷藏室用冷卻器30’箱由冷 媒管而與冷凍室用冷卻器32等並聯連接。上述切換閥 43，是藉由以微電腦爲主體所構成的控制裝置48(參照第 6圖）所控制。 -10- (7) (7)200813381 (1) EMBODIMENT OF THE INVENTION [Technical Field] The present invention relates to a refrigerator in which a duct for controlling the flow of cold air is provided in a duct for conveying cold air generated by a cooler to a storage compartment. Valve device. [Prior Art] A conventional household refrigerator is provided with a cooler chamber provided at a lower portion of the back wall portion of the refrigerator main body, the cooler chamber being provided with a cooler, and provided with: from the cooler chamber A pipe that extends upward to transport the generated cold air to a storage compartment (such as a switching compartment). In the above-described duct, a valve device for controlling the flow of cold air supplied to the storage chamber is incorporated (for example, see Patent Document 1). Fig. 10 is a view showing the appearance of such a valve device 1. In other words, the valve device 1 is integrally formed into a modular structure in which the duct portion is partitioned (closed) into the upper and lower frame portions 2, and the opening portion 2a formed in the frame portion 2 is opened and closed. A baffle 4 and a drive mechanism portion 3 for rotating the baffle 4. In the drive mechanism unit 3, a valve motor 7 or a gear mechanism (not shown) is incorporated in a rectangular resin box 6 made of a synthetic resin having a slightly long length. Further, the rotary shaft 8 is rotationally driven, and the rotary shaft 8 is provided to protrude horizontally from the lower rear end portion of the inner side surface 6a of the inner side of the duct 6 from the casing 6. The baffle 4 is formed in a rectangular plate shape of synthetic resin and is coupled to the rotating shaft 8. The inner surface portion (lower surface portion) of the baffle plate 4 is provided with a sealing member 5 which is in close contact with the peripheral portion of the opening portion 2a when (2) (2) 200813381 closes the opening portion 2a of the frame portion 2. The frame portion 2 is formed in a rectangular frame shape of synthetic resin, and is integrally provided to the casing 6 so as to extend horizontally from the lower portion of the inner side surface 6a of the casing 6 of the drive mechanism portion 3 in the inward direction. . The component valve unit 1 is not shown, but the drive mechanism unit 3 is assembled so as to be fitted into a recess of a heat insulating material constituting a wall portion of the duct. At this time, the inner side surface 6a of the above casing 6 is disposed to face the inside of the pipe. The valve motor 7 is controlled by energization by a control device (not shown) to open and close the shutter 4, and to control the flow of cold airflow toward the storage chamber from the duct. [Problem to be Solved by the Invention] In the above-described refrigerator, since the cooler is often frosted, the cooling efficiency is lowered. Therefore, for example, the cooling operation is stopped periodically (when the accumulated operation time reaches the predetermined time), and the defrosting operation of the defrosting heater is performed. In this defrosting operation, the frost of the cooler is melted by the heat of the heater, and the humidified air is filled in the cooler chamber and the duct. The storage compartment side has a lower temperature than the cooler, and in the above-described conventional valve device 1, although almost all members are made of synthetic resin -6 - (3) 200813381, in the housing 6, there is built-in The valve motor 7 has a metal motor frame, so that the heat capacity of the portion is larger than that of the other portions, and there is a case where the temperature does not rise even during the defrosting operation (continuous low temperature state). Therefore, when the shutter 4 after the defrosting operation is completed, a condensation phenomenon occurs in the inner side surface 6a of the casing 6, and the condensed water flows down to accumulate in the portion of the rotating shaft 8. When the condensed water accumulates near the rotary shaft 8, the cooling operation after the defrosting causes the water to freeze, and the rotation axis φ 8 may hinder the opening and closing operation of the shutter 4. In order to prevent the condensation of the valve device 1, there is also an attempt to install a heater for heating the casing 6 of the drive mechanism portion 3, for example, a surface heater to which an electric wire is attached to an aluminum foil. However, the structure is complicated by the addition of the heater, and there is a lack of cost increase. SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances, and an object thereof is to provide a refrigerator in which a valve device is provided in a simple and inexpensive configuration, which prevents condensation of the valve device and prevents the shutter from freezing. [Means for Solving the Problem] In order to achieve the above object, the refrigerator of the present invention includes a valve motor for driving the cold air generated by the cooler to the storage chamber. The valve device that opens and closes the plate controls the flow of the cold air by opening and closing the shutter by energization control of the valve motor, and is provided not to be associated with the shutter motor except for the opening and closing operation of the shutter The energization control means for energization for self-heating is performed by the opening and closing operation. (4) 200813381 [Effect of the Invention] The refrigerator according to the present invention is provided with a valve device in the duct, and is provided with an energization control means for energizing the valve motor in addition to the opening and closing operation of the shutter. It is possible to achieve an excellent effect of preventing the condensation of the valve device and preventing the baffle from freezing by a simple and inexpensive structure. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to Figs. 1 to 8 . First, Fig. 2 shows the configuration of the main body 11 of the refrigerator of the present embodiment. The refrigerator main body 1 1 is provided with a heat insulating wall 12a, 12b, and 12c vertically partitioned from the upper portion, and is provided with a refrigerating chamber 13, an ice making chamber 14, and a vegetable and fruit chamber. 15. Freezer compartment 16. The ice making chamber 14 is arranged side by side with the switching chamber 17 (see Fig. 3). The switching chamber 17 can be switched between a plurality of temperature zones by a user's operation, and can be switched into a freezer compartment, a partial compartment, a quenching compartment, a refrigerating compartment, and the like. Fig. 3 is a cross-sectional view showing a position different from the position in the left-right direction of Fig. 2. A door opening and closing type door portion 1 is provided at a front portion of the refrigerating chamber 13 , and a door portion 1 of the drawing type is provided in the front portion of the ice making chamber 4, the vegetable and fruit chamber 15 and the freezing chamber 16 9, 20, 2 1. The water storage container 22 is connected to the rear surface portion ' of the door portion 19, and the storage containers 23 and 24 are connected to the rear surface portions of the door portions 20 and 21, respectively. In the above-described refrigerating compartment 13, a -8-(5) (5) 200813381 is provided with a refrigerating compartment temperature sensor 25 for detecting the temperature in the refrigerating compartment 13 in which the detection is provided for detecting The freezer compartment temperature sensor 26 at the temperature in the freezer compartment 16. Further, in the switching chamber 1 7 , a switching chamber temperature sensor 27 for detecting the temperature in the switching chamber 17 is provided (see Fig. 6). As shown in Fig. 3, in the back wall portion of the vegetable compartment 15, a refrigerator compartment cooler chamber 28 and a freezer compartment cooler chamber 29 are provided in two layers. In the refrigerator compartment 28 for refrigerating compartments, the refrigerating compartment cooler 30 and the refrigerating air supply fan for cooling the refrigerating compartment 13 and the vegetable compartment 15 are provided in the refrigerating compartment cooler chamber 28. 31. In the freezer compartment cooler chamber 29, a freezer compartment cooler 3 2 and a freezing blower fan 33 for cooling the freezing compartment 16 and the ice making compartment 14 and the switching compartment 17 are provided (refer to Figure 3). The refrigerating compartment cooler 30, the refrigerating air blowing fan 31, the freezing compartment cooler 32, and the freezing air blowing fan 33 are disposed at positions shifted to the right and left, although not shown in detail. Further, in the above-described freezer compartment cooler 20, a defrosting heater 34 (only shown in Fig. 6) is added. As shown in Fig. 2, when the refrigerating blower fan 31 is driven, the cold air generated by the refrigerating compartment cooler 30 is circulated from the upper portion of the refrigerating compartment cooler chamber 28 through the air duct 35. The plurality of blowout ports are supplied into the refrigerating compartment 13 and, after being supplied into the inside of the vegetable compartment 15, return to the lower portion of the refrigerating compartment cooler chamber 28. The refrigerating compartment 13 and the fruit and vegetable compartment 15 are cooled by a refrigerating temperature zone of, for example, 3 ° C to 5 ° C. As shown in Fig. 3, when the cooling air supply fan 3 3 is driven, the cold air generated by the cold -9 - 200813381 (6) freezer cooler 3 2 is circulated from the freezer compartment cooler chamber 29 The upper portion is supplied to the ice making chamber 14 (and the switching chamber 17) through the duct 36, and is returned to the lower portion of the freezer compartment cooler chamber 29 after being supplied to the freezing chamber 16. The freezing compartment 16 and the ice making compartment 14 are cooled by a freezing temperature zone of, for example, -1 8 °C or lower. At this time, in the duct 36, a valve device 37 for controlling the cold air in the switching chamber 17 (opening and closing the passage of the duct 36) is disposed. This valve device 3 7 will be described later. A refrigeration circuit 38 is incorporated in the refrigerator main body 1 (refer to Fig. 7). At this time, as shown in FIG. 2, a machine room 3 is provided on the back side of the lower end portion of the refrigerator main body 1 1 , and a compressor 40 and a condenser 41 are disposed in the machine room 39 . The cooling fan 42 (see Fig. 6 and Fig. 7) for cooling it. As shown in Fig. 7, the refrigeration circuit 38 is a three-way direction of the compressor 40, the condenser (condenser) 41, and two outlets 43b and 43c having one inlet 43a and first and second. The switching valve 43 formed of the valve, the first capillary 44 connected to the first outlet 43b of the switching valve 43, the refrigerator 32 for the freezing compartment, the accumulator 45, and the check valve 46 are sequentially connected by a refrigerant pipe. In the closed circuit, between the second outlet 43c of the switching valve 43 and the connection point between the check valve 46 and the compressor 40, the second capillary 47 and the refrigerator 30' are cooled by a refrigerant pipe. It is connected in parallel with the freezer cooler 32 or the like. The above-described switching valve 43 is controlled by a control device 48 (see Fig. 6) mainly composed of a microcomputer. -10- (7) (7)
200813381 當上述切換閥43切換到第一出口 縮機40的驅動而讓冷媒通過凝結器4 i 毛細管44而供給到冷凍室用冷卻器3 2 壓器45、單向閥46，然後回到壓縮機 式）。相對的，當切換閥43切換到第二 藉由壓縮機40的驅動讓冷媒通過凝結暑 二毛細管4 7而供給到冷藏室用冷卻器 機40(冷藏室冷卻模式）。 針對上述氣門裝置3 7的構造來加 置3 7，如第4圖所示，是將：配置成辦 爲上下的框架部49、將在該框架部49 口部4 9 a予以開閉的擋板5 0、及將該指 機構部5 1，組件化作成一體。上述驅_ 成稍縱長的矩形箱狀的合成樹脂製的殻 氣門馬達5 3或齒輪機構（沒有圖示）。币 驅動，該旋轉軸54是設置成：從殻體 36的內側的內側面52a的下部後端部 殼體52的外壁部，設置有沒有圖示的 達53連接到驅動電路。 上述擋板50是以合成樹脂作成矩 上述旋轉軸5 4。在該擋板5 0的內面 有：當將框架部49的開口部49a封閉 4 9 a的周圍部的密封構件5 5。上述框I 樹脂作成在周圍部（三方面）具有立起壁 4 3 b側時，藉由壓 之後，在通過第一 之後，依序通過儲 40(冷凍室冷卻模 出口 4 3 c側時，在 酔41之後，通過第 3 1，然後回到壓縮 以說明。該氣門裝 ί上述管道3 6分隔 所形成的矩形的開 t板5 0轉動的驅動 &機構部5 1，在作 體52內，組裝入 ί將旋轉軸54轉動 52之中朝向管道 起水平地突出。在 連接器，將氣門馬 形板狀，而連結於 部（下面部），設置 時，緊貼於開口部 每部49，是以合成 部的矩形容器狀， -11 - (8) (8)200813381 是以從上述驅動機構部5 1的殼體52的內側面52a的下部 起，朝向內側方向水平地延伸的方式，將框架部49 一體 地設置於該殼體5 2。上述開口部4 9a，是矩形地形成在框 架部49的底壁部的中央部。 該組件化的氣門裝置3 7，如第3圖所示，是將上述 驅動機構部5 1組裝嵌入到，構成管道3 6的壁部的隔熱材 的凹部內。此時，將上述殻體5 2的內側面5 2 a配置成面 對於管道36內。而上述氣門馬達53，藉由上述控制裝置 4 8經由沒有圖示的驅動電路而予以通電控制，使擋板5 0 開閉作動，來控制從管道3 6對於切換室1 7內的冷氣的流 通。 在本實施例，作爲上述氣門馬達5 3，是採用能順暢 進行得到高扭力的動作的雙相激磁式的步進馬達。如第5 圖（a)所示，該氣門馬達（步進馬達）53，是具有：作爲機械 角度錯開90度的A相位線圈56與B相位線圈57，對A 相位線圈5 6的端子A、A ’ 、B相位線圈5 7的端子B、 B ’ ，以第5圖（b)所示的模式，交互施加脈衝訊號來使其 旋轉。 在使擋板5 0從關閉狀態作動成開啓狀態的情況，藉 由以步驟1、2、3、4的順序（從第5圖（b)的左邊到右邊 的順序）的模式來進行通電，氣門馬達53進行正旋轉 (CW)。藉由以相反的順序（從第5圖（b)的右邊到左邊的順 序）通電，氣門馬達53進行逆旋轉（CCW)，擋板50從開 啓狀態朝關閉狀態轉動。而在該擋板5 0的開閉動作之 -12- 200813381 (9) 後，氣門馬達53的通電被切斷’即使是該狀態’藉由氣 門馬達5 3的磁鐵滯留力’來維持擋板5 0的開閉狀態。 第6圖示槪略顯示以上述控制裝置48爲中心的電冰 箱主體11的電機構造°對該控制裝置4 8 ’輸入來自於上 ' 述冷藏室溫度感應器25、冷凍室溫度感應器26、切換室 ' 溫度感應器27的訊號’並且輸入來自於除霜感應器58的 訊號’並且輸入來自於用來檢測冰箱外的溫度（周圍溫度） φ 的外氣溫感應器59的訊號。如第7圖所示’上述除霜感 應器58，是增設於冷凍室用冷卻器32附近的儲壓器45。 該控制裝置48，是根據預先儲存的運轉控制程式， 根據該輸入訊號，來控制：上述壓縮機40、切換閥43、 冷藏用送風風扇31、冷凍用送風風扇33、冷卻風扇42、 除霜加熱器34、氣門馬達53等。 此時，控制裝置48，藉由該軟體構造，藉由上述切 換閥43的切換，一邊交互切換冷藏室冷卻模式、與冷凍 φ 室冷卻模式，一邊執行冷卻運轉，而一邊交互地冷卻冷藏 室13(及蔬果室15)與冷凍室16(及製冰室14)，——邊將各 室1 3〜1 6內的溫度維持在設定溫度附近。而控制裝置 48，關於切換室1 7，根據所選擇的溫度帶與切換室溫度 感應器27的檢測溫度，來控制氣門裝置37(利用氣門馬 達53來進行擋板50的開閉），將內部維持在設定溫度 帶。 在該情況，控制裝置48，各針對冷藏室1 3及冷凍室 1 6，對於設定溫度（目標）來設定預定溫度幅度的ON溫度 -13-200813381 When the switching valve 43 is switched to the driving of the first outlet reducer 40, the refrigerant is supplied to the freezer compartment cooler 45, the check valve 46, and then returned to the compressor through the condenser 4 i capillary 44. formula). On the other hand, when the switching valve 43 is switched to the second, the refrigerant is supplied to the refrigerating compartment cooler 40 (refrigeration chamber cooling mode) by the condenser 2 by the driving of the compressor 40. In addition to the structure of the above-described valve device 37, as shown in Fig. 4, the frame portion 49 which is disposed up and down, and the shutter which opens and closes the mouth portion 49a of the frame portion 49 are provided. 50, and the component of the finger mechanism portion 5 1, is integrated into one. The above-mentioned drive is a rectangular valve-shaped synthetic resin case valve motor 53 or a gear mechanism (not shown). The rotary shaft 54 is provided so as to be provided from the lower rear end portion of the inner side surface 52a of the inner side of the casing 36. The outer wall portion of the casing 52 is provided with a connection 53 (not shown) connected to the drive circuit. The baffle 50 is formed by a synthetic resin as the above-mentioned rotating shaft 54. On the inner surface of the baffle 50, there is a sealing member 55 that closes the peripheral portion of the opening portion 49a of the frame portion 49 by 4 9 a. The above-mentioned frame I resin is formed such that when the peripheral portion (three aspects) has the rising wall 433b side, after passing through the first step, the resin 40 is sequentially passed through the storage 40 (the freezer compartment cooling die outlet 4 3 c side) After the crucible 41, the third and then the compression is used to illustrate that the valve is separated by the above-mentioned duct 36, and the rectangular opening plate 50 is formed by the driving & mechanism portion 5 1, in the body 52 Inside, the group loading ί horizontally protrudes toward the pipe from the rotation 52 of the rotating shaft 54. In the connector, the valve is formed in a shape of a plate, and is coupled to the portion (lower portion), and is placed in close contact with each of the openings 49. In the rectangular container shape of the combined portion, -11 - (8) (8) 200813381 is a horizontally extending direction from the lower portion of the inner side surface 52a of the casing 52 of the drive mechanism portion 51 to the inner side. The frame portion 49 is integrally provided to the casing 52. The opening portion 49a is formed in a rectangular shape at a central portion of the bottom wall portion of the frame portion 49. The modular valve device 3, as shown in Fig. 3 It is shown that the above-described drive mechanism portion 51 is assembled and embedded to form the wall of the duct 36. In the recessed portion of the heat insulating material, at this time, the inner side surface 5 2 a of the casing 52 is disposed to face the duct 36. The valve motor 53 is driven by the control device 48 via a figure (not shown). The circuit is energized and controlled to open and close the baffle 50 to control the flow of cold air from the duct 36 to the switching chamber 17. In the present embodiment, the valve motor 53 can be smoothly obtained. A two-phase excitation type stepping motor with a torque action. As shown in Fig. 5(a), the valve motor (stepping motor) 53 has an A-phase coil 56 and a B-phase which are shifted by 90 degrees as a mechanical angle. The coil 57 alternately applies a pulse signal to the terminals A and A' of the A-phase coil 56 and the terminals B and B' of the phase coil 57 of the A-phase coil 57 in a pattern shown in Fig. 5(b). When the shutter 50 is actuated from the closed state to the open state, energization is performed by the mode in the order of steps 1, 2, 3, and 4 (from the left to the right of FIG. 5(b)), the valve The motor 53 performs a positive rotation (CW) by the reverse order (from Figure 5 ( b) The sequence from the right to the left is energized, the valve motor 53 is reversely rotated (CCW), and the shutter 50 is rotated from the open state to the closed state. The opening and closing operation of the shutter 50 is -12-200813381 (9) After that, the energization of the valve motor 53 is cut off. Even in this state, the opening and closing state of the shutter 50 is maintained by the magnet retention force of the valve motor 53. The sixth diagram is schematically shown by the control device 48. The motor configuration of the central refrigerator body 11 inputs a signal from the above-mentioned refrigerator compartment temperature sensor 25, freezer compartment temperature sensor 26, switching chamber 'temperature sensor 27' and inputs from the control device 48' The signal of the defrost sensor 58 is input and the signal from the outside air temperature sensor 59 for detecting the temperature (ambient temperature) φ outside the refrigerator is input. As shown in Fig. 7, the above-described defrosting sensor 58 is an accumulator 45 which is provided in the vicinity of the freezer compartment cooler 32. The control device 48 controls the compressor 40, the switching valve 43, the refrigerating blower fan 31, the refrigerating blower fan 33, the cooling fan 42, and the defrosting heating based on the input control signal based on the input control signal stored in advance. The device 34, the valve motor 53, and the like. At this time, the control device 48 alternately cools the refrigerating compartment 13 while performing the cooling operation while switching the refrigerating compartment cooling mode and the freezing φ compartment cooling mode by switching the switching valve 43 by the soft body structure. (and the fruit and vegetable compartment 15) and the freezing compartment 16 (and the ice making compartment 14), while maintaining the temperature in each chamber 13 to 16 in the vicinity of the set temperature. On the other hand, the control unit 48 controls the valve device 37 (the opening and closing of the shutter 50 by the valve motor 53) based on the selected temperature zone and the detected temperature of the switching chamber temperature sensor 27, and maintains the inside. Set the temperature band. In this case, the control device 48 sets the ON temperature of the predetermined temperature range for the set temperature (target) for each of the refrigerating compartment 13 and the freezing compartment 16 -13-
200813381 (10) 及OFF溫度，基本來說，是根據上述冷藏室潘 25及冷凍室溫度感應器26的檢測溫度等，來將 予以切換。 具體來說，針對冷藏室1 3，例如將ON溫g °C，OFF溫度設定爲2 °C，針對冷凍室1 6，例$丨 度設定爲一 18°C，OFF溫度設定爲—21°C。而竹 式的條件，（1)當冷卻中的室部的檢測溫度到達 時，（2)從前次的模式切換起經過一定時間（例如 以上，且當非冷卻中的室部的檢測溫度上昇到 時，（3)從前次的模式切換起經過預定時間（例如 時，的其中一種情況。當兩室部的檢測溫度雙方 溫度以下時，壓縮機40關閉（停止冷卻運轉）。 此時，上述冷藏用送風風扇 31，除了當冷 冷藏室用冷卻器30時（冷藏室冷卻模式）之外， 冷卻模式執行時也會啓動，而能抑制冷藏室用； 的結霜情形（潮濕運轉）。冷凍用送風風扇3 3，除 流動於冷凍室用冷卻器3 2時之外，當冷藏室冷 行時也會啓動，藉由該控制，則即使當冷藏室冷 行時，冷凍室用冷卻器3 2表面的溫度爲很低的 以藉由驅動冷凍用送風風扇3 3，對於冷凍室1 6 1 4(沒有圖示的製冰盤）供給冷風，而能有助於 卻。上述冷卻風扇4 2，當驅動壓縮機4 0時啓動 控制裝置48，在每次冷凍室冷卻模式的執 累計値到達預定時間（例如1 〇小時），則執行除 度感應器 切換閥43 ί設定爲5 丨將ON溫 爲切換模 OFF溫度 1 0分鐘） ON溫度 60分鐘） 都在OFF 媒流動於 當冷凍室 备卻器3 0 了當冷媒 卻模式執 卻模式執 溫度，所 及製冰室 一定的冷 〇 行時間的 霜運轉。 -14- 200813381 (11) 而在本實施例，在除霜運轉之前執行預冷運轉。該預冷運 轉，首先，在將冷凍室1 6、14的設定溫度切換到低溫側 例如3 °C的狀態，以高轉數來連續驅動壓縮機40，執行冷 凍室冷卻模式，將冷凍室1 6等強制冷卻，然後，切換到 冷藏室冷卻模式，將冷藏室1 3等強制冷卻。 _ 上述除霜運轉，在壓縮機40或各風扇3 1、3 3、42停 止的狀態，藉由通電到上述除霜加熱器3 4來執行，根據 φ 除霜感應器58檢測到預定溫度（例如)以上的溫度而結 束。在該除霜運轉時，上述氣門裝置3 7的擋板5 0爲封閉 狀態。如上述，關於冷藏室用冷卻器3 0，由於幾乎沒有 結霜，所以不需要特別利用加熱讓霜融化，而針對該冷藏 室用冷卻器30部分，也可設置除霜用加熱器及除霜感應 器同樣進行加熱。 在上述除霜運轉時，通電到除霜加熱器進行除霜運 轉。在該除霜運轉，是藉由除霜用加熱器3 4的熱，來將 鲁 附著在冷凍室用冷卻器3 2的霜融化，所以在冷凍室用冷 卻器室29內及管道3 6內，充滿了較高溫的濕潤空氣。而 在除霜運轉結束後，當上述氣門裝置3 7的擋板5 0開放 時，若殼體52的內側面52a部分成爲低溫的話，高溫濕 潤的空氣則可能接觸到其內側面5 2a而產生凝結。 因此’在本實施例，如之後的作用說明（流程圖說明） 所敘述，上述控制裝置48，除了爲了上述氣門裝置37的 擋板50的開閉動作（冷氣對於切換室1 7的流通的控制）而 控制對於氣門馬達5 3的通電之外，在上述擋板5 〇的開閉 -15- 200813381 (12) 動作時以外，對於上述氣門馬達5 3，不伴隨該擋板5 0的 開閉動作而進行自己發熱用的通電。而控制裝置4 8會作 爲通電控制手段的功能。 更具體來說，在本實施例，當進行自己發熱用的通電 時’是每隔一定時間交互地切換：氣門馬達5 3的朝向A 相位線圈5 6的通電、朝向B相位線圈5 7的通電。在該情 況，在與前次使擋板50開閉作動時的最後的通電模式相 φ 同的通電狀態，可使直流電流流到：A相位線圈5 6的端 子A、A， 、B相位線圈57的端子B、B，。例如，在進 行前次擋板5 0的封閉動作時的最後的通電狀態，在第5 圖（b)的最右邊的模式的情況，對於A相位線圈56，通電 讓端子A爲+，端子A’爲—。對於B相位線圈5 7，通 電讓端子B爲—，端子B’爲+。 在本實施例，作爲進行上述自己發熱用的通電的時 機，在預冷運轉時，對於上述氣門馬達5 3開始進行自己 • 發熱用的通電，在除霜運轉中持續通電，在除霜運轉結束 後，當回到平常的冷卻運轉時，對於氣門馬達5 3結束自 己發熱用的通電，而回到平常的開閉動作控制。 接著，針對上述構造的作用來敘述。第1圖的流程 圖，顯示了：控制裝置48所執行’關於對於上述氣門馬 達5 3的自己發熱用的通電控制的部分的處理順序。也就 是說，首先，在步驟S1，判斷是否已開始進行預冷運 轉。若預冷運轉開始時（在步驟S1是YES)，在接下來的 步驟S2，開始進行相對於氣門馬達53的線圈56、57的 -16- 200813381 (13) 自己發熱用的通電。該通電，如上述，是每隔一定時間交 互地反覆進行朝向A相位線圈5 6的通電、朝向B相位線 圈57的通電。 自從預冷運轉開始後，累計計時器經過一定時間時， 預冷運轉會結束（步驟S 3 )。然後，這次將除霜加熱器3 4 啓動’並且將氣門裝置3 7的擋板5 0封閉，開始進行除霜 運轉（步驟S 4)。在該除霜運轉時，繼續執行對於上述氣門 ^ 馬達53的自己發熱用的通電。 在接下來的步驟S 5，判斷是否爲除霜運轉的結束時 機。在該情況’當檢測出除霜感應器5 8爲預定溫度（例如 8 °C )以上的溫度時，則判斷除霜完成，而即使除霜感應器 5 8沒有檢測出預定溫度（例如8 °C )，則一旦從除霜運轉開 始經過一定時間（例如20分鐘）時，則會強制性結束。 若判斷除霜運轉結束（在步驟S5是YES)，則在步驟 S6將除霜用加熱器34關閉。在接下來的步驟S7，在經過 # 時間T1 (例如6分鐘）後，將壓縮機40啓動。藉由以時間 T 1延遲開始進行壓縮機40的運轉，則讓各冷卻器3 0、3 2 的壓力平衡性良好。接著，在步驟S8，在經過時間T2(例 如4分鐘）後，將冷凍用送風風扇33驅動（正轉），並且， 以步驟S 9，在經過時間Τ3 (例如1分鐘）後’使冷凍用送 風風扇3 3逆轉。藉此，讓除霜所產生的溫暖空氣不會滯 留於管道3 6部分（氣門裝置3 7的下部）而流動。 在步驟S10，在時間Τ4(例如2分鐘）經過後，移往平 常的冷卻運轉。此時，結束相對於氣門馬達5 3的自己發 -17- 200813381 (14) 熱用的通電，進行平常的氣門裝置3 7的開閉控制。讓冷 凍用送風風扇3 3的旋轉回到正轉。 藉由上述控制，對於氣門馬達53，不伴隨擋板50的 開閉動作，進行自己發熱用的通電，則氣門馬達5 3的線 ' 圈56、57會發熱。藉由該發熱，讓氣門馬達53的馬達框 ' 架的溫度提高，進而讓其周邊部分的溫度提高’則氣門裝 置37不易產生凝結。在該情況，藉由在容易產生氣門裝 φ 置3 7部分的凝結情形的除霜運轉時，進行對於氣門馬達 5 3的自己發熱用的通電，則能有效地防止除霜運轉時及 之後產生凝結情形。並且，當預冷運轉時，是對於上述氣 門馬達5 3開始進行自己發熱用的通電，所以在除霜運轉 開始的時間點，能更有效地預先提高氣門馬達5 3的周邊 部分的溫度。 第8圖是顯示，在除霜運轉時及之後，調查氣門裝置 37的驅動機構部51的殼體52的表面（內側面52a)的溫度 φ 變化的實驗結果。圖中a，是進行本實施例的控制（自己發 熱用的通電）時的溫度變化，圖中b，是沒有進行自己發 熱用的通電的習知情形的溫度變化。圖中c，是顯示管道 3 6內（氣門裝置3 7的下部）的溫度變化的情形。 從該實驗結果，可了解藉由本實施例，讓氣門裝置 3 7的溫度較高，可以防止凝結情形。尤其是藉由步驟S 7 〜S 9的控制，藉由延遲將擋板5 0開放的時機，則可更提 高防止凝結效果。 錯由本貫施例’在管道3 6內設置采/門裝置3 7，在擋 -18- (15) (15)200813381 板50的開閉動作以外，對於氣門馬達53，不伴隨該擋板 50的開閉動作而進行自己發熱用的通電，所以能防止氣 門裝置3 7的凝結，進而防止擋板5 0凍結。在該情況’不 需要附加另外的加熱器等，藉由氣門馬達53的通電控 制，則能防止凝結情形甚至凍結情形地產生，而能以簡單 且廉價的構造完成。 尤其在本實施例，是在最有效的時機來進行’對於氣 門馬達5 3的自己發熱用的通電，所以既能有效地防止凝 結情形，又能節省電力。並且在本實施例，當進行自己發 熱用的通電時，是交互地切換：朝向氣門馬達53的A相 位線圈5 6的通電、朝向B相位線圈5 7的通電，所以不會 只消耗其中一方的相位的線圏（使用壽命降低），而能抑制 線圈5 6、5 7的使用壽命的降低。 第9圖的流程圖，是顯示本發明的其他實施例。該實 施例，與上述實施例不同之處在於，藉由作爲通電控制手 段的控制裝置4 8所控制，對於氣門馬達5 3的自己發熱用 的通電時機。控制裝置48，根據來自於用來檢測冰箱外 的溫度的外氣溫感應器5 9的訊號、及切換室1 7的設定溫 度帶，進行對於氣門馬達53的自己發熱用的通電。而當 然還有對氣門裝置3 7進行平常的控制（擋板5 0的開閉控 制）。 首先，在步驟S 2 1，判斷外氣溫感應器5 9是否檢測 到預定溫度（例如10°C)以下。當外氣溫感應器59檢測到 預定溫度以下時（在步驟S21爲YES)，在接下來的步驟 -19- 200813381 (16) S 22 ’判斷切換室丨7的設定是否在冷凍室溫度帶以外。當 切換室17的設定在冷凍室溫度帶以外時（在步驟S22爲 YES)，在步驟S23，執行對於氣門馬達53的自己發熱用 的通電。 之後在步驟S24，監測外氣溫感應器59的檢測溫度 是否在預定溫度（例如1 0 °C )以下，當檢測到超過預定溫度 的溫度時（在步驟S24爲NO)，則在步驟S25，停止對於 φ 氣門馬達5 3的自己發熱用的通電。之後，反覆進行從步 驟S21開始的處理。 當切換室1 7設定爲冷凍室溫度帶時，氣門裝置3 7的 擋板5 0，大部分的時間是處於開放狀態，成爲冷氣隨時 流通於管道3 6內的狀態，殻體5 2不容易產生凝結。相對 的，當切換室1 7設定在冷藏室、急冷室等的較高的溫度 帶時，則擋板5 0封閉的時間變多，在該情況，冷氣會沉 澱於管道36內（氣門裝置37附近），所以當擋板50開放 # 時，往往會產生凝結情形。而在冬天而冰箱外的氣溫較低 等情形，氣門裝置3 7容易變得更低溫，所以殻體52容易 產生凝結情形。 因此，如本實施例，當切換室1 7設定在冷凍室溫度 帶以外，且外氣溫感應器檢測到預定溫度以下時，藉由作 成對於氣門馬達5 3進行自己發熱用的通電，則能抑制氣 門裝置3 7成爲低溫，能有效地防止氣門裝置3 7產生凝 結。而對於氣門馬達5 3進行自己發熱用的通電’與隨時 進行的方式相比，能更省電力，而不需要另外附加加熱 -20- (17) (17)200813381 器’能以簡單且廉價的構造完成。 而雖然省略圖示，而本發明也能變更成以下的方式來 實施。首先’作爲對於氣門馬達5 3進行自己發熱用的通 電的時機，可用如下的幾種變形方式。也可設置用來檢測 除霜感應器5 8的故障的故障檢測手段，當藉由故障檢測 手段檢測出除霜感應器5 8的故障時，則隨時進行對於氣 門馬達5 3的自己發熱用的通電。藉此，在除霜感應器5 8 故障時，則能確實地防止氣門裝置3 7產生凝結情形。 或者在氣門裝置3 7的擋板5 〇的開放狀態，也可對氣 門馬達5 3連續或間續地進行自己發熱用的通電。藉此， 當擋板50開放而冷氣流通於氣門裝置37之中容易產生凝 結的部分時，能使氣門馬達5 3發熱，則能抑制容易產生 凝結的部分成爲低溫，而能提高凝結防止效果。 並且’在電冰箱的電源開啓之後，各儲藏室1 3〜1 7 的溫度較高，所以急速地冷卻到某程度的低溫的方式很重 要。並且，在降溫的期間，氣門裝置3 7部分的溫度也較 高，所以產生凝結的可能性較小，也不需要進行自己發熱 用的通電。 所謂的降溫期間，具體來說，能判斷爲：在電源啓動 後直到經過預定時間（例如1 5 0分鐘），或冷凍室冷卻模式 或冷藏室冷卻模式的回路執行過預定次數（例如3次），或 者冷凍室用冷卻器32直到成爲預定溫度（例如—20 °C)， 或冷凍室13(或製冰室14)內直到成爲預定溫度（例如- 1〇 °C )，的其中一種。 -21 - 200813381 (18) 因此，在電源啓動後，在直到判斷儲藏室1 3〜1 7的 溫度降低到預定溫度以下爲止的降溫期間’也可作成禁止 對於氣門馬達53進行自己發熱用的通電。藉此，在不會 產生凝結情形的狀態下，利用禁止通電則可節省電力。 作爲對於氣門馬達5 3進行自己發熱用的通電的模 式，在擋板50的封閉狀態，以進行該擋板50的封閉動作 時的模式，進行對於雙相位的線圈56、57的通電，在擋 • 板50的開放狀態，以進行該擋板50的開放動作時的模 式，進行對於該雙相位的線圈56、57的通電。藉此，則 既可達成所預期的目的，也可減少因爲反覆進行擋板50 的開閉所導致的踏板的偏移情形，能得到所謂的緊固效 果。 其他，本發明並不限於上述各實施例，例如針對電冰 箱主體的各室部的構造（配置）、或設置兩個冷卻器的位置 等的構造，可進行各種變更。而雖然針對用來控制切換室 • 的冷氣流通的氣門裝置加以說明，而在例如具備有一個冷 卻器的電冰箱，對於用來控制朝向冷藏室的冷氣流通的氣 門裝置也適用本發明。而在關於兩個儲藏室分別控制冷氣 流通的情況，能設置兩個氣門裝置，也能將該兩個氣門裝 置組成一個組件。並且，即使是上述的設定溫度或時間等 的具體數値，也只不過是一個例子，可以適當變更，在不 脫離本發明的主旨的範圍內可適當變更。 【圖式簡單說明】 -22- 200813381 (19) 第1圖顯示本發明的一實施例，是顯示與對於氣門馬 達的自己發熱用的通電控制相關的處理順序的流程圖。 第2圖是槪略性地顯示電冰箱的全體構造的縱剖側面 圖。 * 第3圖是顯示冷卻器室及其附近構造的放大縱剖側面 • 圖。 第4圖是氣門裝置的立體圖。 φ 第5圖是氣門馬達的線圈的通電方式的說明圖。 第6圖是顯示主要部分的電機構造的方塊圖。 第7圖是冷凍回路的構造的顯示圖。 第8圖是調查氣門裝置的溫度變化的實驗結果的顯示 圖。 第9圖是顯示本發明的其他實施例的與第1圖相當的 圖面。 第1 〇圖是顯示習知例子的與第4圖相當的圖面。 【主要元件符號說明】 11 :電冰箱主體 1 7 :切換室 27 :切換室溫度感應器 29 :冷凍室用冷卻器室 3 2 :冷凍室用冷卻器 3 3 :冷凍用送風風扇 34 :除霜加熱器 -23- (20) 200813381 36 :管道 3 7 :氣門裝置 3 8 :冷凍回路 48 :控制裝置（通電控制手段） 49 :框架部 49a :開口部 5 〇 :檔板200813381 (10) and the OFF temperature are basically switched based on the detected temperatures of the refrigerator compartment pan 25 and the freezer compartment temperature sensor 26, and the like. Specifically, for the refrigerating compartment 13, for example, the ON temperature g ° C, the OFF temperature is set to 2 ° C, and for the freezer compartment 16, the example is set to 18 ° C and the OFF temperature is set to - 21 °. C. In the case of the bamboo type, (1) when the detected temperature of the chamber during cooling arrives, (2) a certain period of time elapses from the previous mode switching (for example, above, and when the temperature of the chamber in the non-cooling room rises to (3) One of the cases where a predetermined time has elapsed since the previous mode switching (for example, when the temperature of both chambers is lower than the temperature of the two chambers, the compressor 40 is turned off (stops the cooling operation). At this time, the above refrigeration The blower fan 31 is activated in addition to the cooler 30 for the cold storage compartment (refrigeration chamber cooling mode), and can be activated during the execution of the cooling mode, thereby suppressing frosting (wet operation) for the refrigerating compartment. The blower fan 3 3 is activated when the refrigerator compartment is cold, except when flowing through the freezer compartment cooler 32. With this control, the freezer compartment cooler 3 2 even when the refrigerator compartment is cold. The temperature of the surface is very low to drive the freezing blower fan 33, and it is possible to supply cold air to the freezer compartment 1614 (an ice tray not shown). The cooling fan 4 2, When driving the compressor 4 0 The startup control device 48 sets the demodulation sensor switching valve 43 ί to 5 在 and sets the ON temperature to the switching mode OFF temperature 1 0 after each execution of the freezing chamber cooling mode reaches a predetermined time (for example, 1 〇 hour). Minutes) ON temperature 60 minutes) Both are in the OFF medium flowing in the freezer compartment. When the refrigerant is in the mode, the mode is executed in the mode, and the frosting operation of the ice-making room is performed. -14- 200813381 (11) In the present embodiment, the pre-cooling operation is performed before the defrosting operation. In the pre-cooling operation, first, the compressor 40 is continuously driven at a high number of revolutions while the set temperature of the freezing compartments 16 and 14 is switched to the low temperature side, for example, 3 ° C, and the freezer compartment cooling mode is executed. 6, etc. forced cooling, then, switch to the refrigerating compartment cooling mode, and forcibly cool the refrigerating compartment 13 or the like. The defrosting operation is performed by energizing the defrosting heater 34 in a state where the compressor 40 or the fans 3 1 , 3 3 , 42 are stopped, and the predetermined temperature is detected by the φ defrosting sensor 58 ( For example, the above temperature ends. At the time of this defrosting operation, the shutter 50 of the above-described valve device 37 is in a closed state. As described above, in the refrigerating compartment cooler 30, since there is almost no frosting, it is not necessary to use special heating to melt the frost, and the refrigerating compartment cooler 30 may be provided with a defrosting heater and defrosting. The sensor is also heated. During the above defrosting operation, the defrosting heater is energized to perform defrosting operation. In the defrosting operation, the frost attached to the freezer compartment cooler 32 is melted by the heat of the defrosting heater 34, so that it is in the freezer compartment cooler chamber 29 and the duct 36. It is filled with warm air with a higher temperature. When the shutter 50 of the valve device 37 is opened after the defrosting operation is completed, if the inner side surface 52a of the casing 52 is low temperature, the high-temperature humid air may come into contact with the inner side surface 52a. Condensation. Therefore, in the present embodiment, as described later in the description of the operation (flowchart description), the control device 48 is not only for the opening and closing operation of the shutter 50 of the valve device 37 (the control of the flow of the cold air to the switching chamber 17). In addition to the energization of the valve motor 53, the valve motor 53 is not opened or closed with the shutter 50 except when the shutter 5 is opened and closed -15-200813381 (12). Power up for your own fever. The control unit 48 functions as a power-on control means. More specifically, in the present embodiment, when energization for self-heating is performed, 'it is alternately switched at regular intervals: energization of the valve motor 53 toward the A-phase coil 56, and energization toward the B-phase coil 57 . In this case, the DC current can flow to the terminals A, A, and B of the A-phase coil 56 in the energized state of the last energization mode when the shutter 50 is opened and closed. Terminals B, B,. For example, in the case of the last energization state when the previous baffle 50 is closed, in the case of the rightmost mode of Fig. 5(b), the A phase coil 56 is energized so that the terminal A is +, the terminal A 'for-. For the B phase coil 55, the power supply causes the terminal B to be - and the terminal B' to be +. In the present embodiment, during the pre-cooling operation, the valve motor 53 starts energization for self-heating during the pre-cooling operation, and continues to energize during the defrosting operation, and the defrosting operation ends. Thereafter, when returning to the normal cooling operation, the valve motor 53 ends the energization for self-heating, and returns to the normal opening and closing operation control. Next, the action of the above structure will be described. The flowchart of Fig. 1 shows the processing procedure of the portion of the control unit 48 that performs the energization control for the self-heating of the valve motor 53. That is to say, first, in step S1, it is judged whether or not the pre-cooling operation has started. When the pre-cooling operation is started (YES in step S1), in the next step S2, energization for self-heating with respect to -16 - 200813381 (13) of the coils 56, 57 of the valve motor 53 is started. In the above-described energization, as described above, the energization toward the A-phase coil 56 and the energization toward the B-phase coil 57 are alternately performed alternately at regular intervals. Since the accumulated timer has elapsed for a certain period of time since the start of the pre-cooling operation, the pre-cooling operation is completed (step S3). Then, this time, the defrosting heater 34 is activated and the shutter 50 of the valve device 37 is closed, and the defrosting operation is started (step S4). At the time of this defrosting operation, energization for self-heating of the above-described valve motor 53 is continued. At the next step S5, it is judged whether or not it is the end timing of the defrosting operation. In this case, when it is detected that the defrost sensor 58 is at a temperature higher than a predetermined temperature (for example, 8 ° C.), it is judged that the defrost is completed, and even if the defrost sensor 58 does not detect the predetermined temperature (for example, 8 °) C), once a certain period of time (for example, 20 minutes) has elapsed from the start of the defrosting operation, it is forcibly terminated. When it is judged that the defrosting operation is completed (YES in step S5), the defrosting heater 34 is turned off in step S6. In the next step S7, after the elapse of # time T1 (for example, 6 minutes), the compressor 40 is started. By starting the operation of the compressor 40 with a delay of time T1, the pressure balance of each of the coolers 30 and 3 2 is good. Next, in step S8, after the elapse of time T2 (for example, 4 minutes), the freezing air blowing fan 33 is driven (forward rotation), and in step S9, after the elapse of time Τ3 (for example, 1 minute), the freezing is performed. The blower fan 3 3 is reversed. Thereby, the warm air generated by the defrosting does not flow in the pipe portion 36 (the lower portion of the valve device 37) to flow. At the step S10, after the passage of time Τ 4 (e.g., 2 minutes), the normal cooling operation is moved. At this time, the energization of the self-generation -17-200813381 (14) with respect to the valve motor 53 is completed, and the normal opening and closing control of the valve device 37 is performed. The rotation of the cooling blower fan 3 3 is returned to the forward rotation. By the above-described control, the valve motor 53 is energized for self-heating without the opening and closing operation of the shutter 50, and the wire loops 56 and 57 of the valve motor 53 generate heat. By this heat generation, the temperature of the motor frame of the valve motor 53 is increased, and the temperature of the peripheral portion is increased. Thus, the valve device 37 is less likely to be condensed. In this case, by performing energization for the self-heating of the valve motor 53 at the time of the defrosting operation in which the condensation of the valve assembly φ is set, the damper operation can be effectively prevented from occurring during and after the defrosting operation. Condensation situation. Further, in the pre-cooling operation, since the above-described valve motor 53 starts energization for self-heating, the temperature of the peripheral portion of the valve motor 53 can be more effectively increased in advance at the start of the defrosting operation. Fig. 8 is a view showing an experimental result of a change in the temperature φ of the surface (inner side surface 52a) of the casing 52 of the drive mechanism portion 51 of the valve device 37 during and after the defrosting operation. In the figure, a is a temperature change when the control of the present embodiment (energization for self-heating) is performed, and b in the figure is a temperature change in a conventional case where the energization for self-heating is not performed. In the figure, c is a view showing a temperature change in the pipe 36 (the lower portion of the valve device 37). From the results of this experiment, it can be understood that by the present embodiment, the temperature of the valve device 37 is made high, and the condensation can be prevented. In particular, by the control of steps S7 to S9, by preventing the timing of opening the shutter 50, the condensation preventing effect can be further enhanced. In the present embodiment, the door/door device 3 7 is provided in the pipe 36, and the shutter motor 50 is not associated with the shutter motor 50 except for the opening and closing operation of the block -18-(15) (15) 200813381 plate 50. Since the energization for self-heating is performed by the opening and closing operation, condensation of the valve device 37 can be prevented, and the shutter 50 can be prevented from freezing. In this case, it is not necessary to add an additional heater or the like, and by the energization control of the valve motor 53, it is possible to prevent the occurrence of condensation or even freezing, and it can be completed in a simple and inexpensive configuration. In particular, in the present embodiment, the energization for the self-heating of the valve motor 53 is performed at the most effective timing, so that the condensation can be effectively prevented and the electric power can be saved. Further, in the present embodiment, when energization for self-heating is performed, the energization of the A-phase coil 56 toward the valve motor 53 and the energization of the B-phase coil 57 are alternately switched, so that only one of them is not consumed. The phase of the coil (the service life is reduced) can suppress the decrease in the service life of the coils 56, 57. The flowchart of Fig. 9 is a view showing another embodiment of the present invention. This embodiment differs from the above-described embodiment in the energization timing for self-heating of the valve motor 53 by the control device 48 as the energization control means. The control unit 48 performs energization for self-heating of the valve motor 53 based on the signal from the outside air temperature sensor 59 for detecting the temperature outside the refrigerator and the set temperature band of the switching chamber 17. However, there is of course a normal control of the valve device 37 (opening and closing control of the shutter 50). First, it is judged at step S 2 1, whether or not the outside air temperature sensor 59 detects a predetermined temperature (e.g., 10 ° C) or less. When the outside air temperature sensor 59 detects a predetermined temperature or lower (YES in step S21), it is judged in the next step -19-200813381 (16) S 22 ' whether the setting of the switching chamber 7 is outside the freezer temperature band. When the setting of the switching chamber 17 is outside the freezer compartment temperature zone (YES in step S22), energization for self-heating of the valve motor 53 is performed in step S23. Then, in step S24, it is monitored whether the detected temperature of the outside air temperature sensor 59 is below a predetermined temperature (for example, 10 ° C), and when a temperature exceeding the predetermined temperature is detected (NO in step S24), then in step S25, the stop is stopped. The energization for the self-heating of the φ valve motor 53 is performed. Thereafter, the processing from step S21 is repeatedly performed. When the switching chamber 17 is set to the freezing compartment temperature zone, the shutter 50 of the valve device 37 is in an open state for a large period of time, and the cold air is circulated in the pipe 36 at any time, and the casing 52 is not easy. Produces condensation. On the other hand, when the switching chamber 17 is set in a higher temperature zone such as a refrigerating compartment, a quenching chamber, or the like, the time during which the shutter 50 is closed increases, and in this case, cold air is deposited in the duct 36 (valve device 37). Nearby), so when the baffle 50 is open #, condensation often occurs. In the case where the temperature outside the refrigerator is low in the winter and the like, the valve device 37 tends to become colder, so that the casing 52 is liable to cause condensation. Therefore, in the present embodiment, when the switching chamber 17 is set outside the freezing compartment temperature zone and the outside air temperature sensor detects a predetermined temperature or lower, it is possible to suppress the energization of the valve motor 53 by self-heating. The valve device 37 becomes a low temperature, and it is possible to effectively prevent the valve device 37 from being condensed. The power-on for the self-heating of the valve motor 53 can save more power than the way it is performed, without the need for additional heating. -20- (17) (17) 200813381 can be simple and inexpensive. Construction is complete. Although the illustration is omitted, the present invention can be implemented in the following modes. First, as the timing of energizing the valve motor 53 for self-heating, the following modifications are available. A failure detecting means for detecting a failure of the defrost sensor 58 may be provided. When the failure of the defrost sensor 58 is detected by the failure detecting means, the self-heating of the valve motor 53 is performed at any time. power ups. Thereby, when the defrosting sensor 58 is broken, it is possible to surely prevent the valve device 37 from being condensed. Alternatively, in the open state of the shutter 5 of the valve device 37, the valve motor 53 may be continuously or continuously energized for self-heating. As a result, when the shutter 50 is opened and the cold airflow passes through the portion where the condensation is likely to occur in the valve device 37, the valve motor 53 can be heated, and the portion where the condensation is likely to occur can be suppressed from becoming low temperature, and the condensation prevention effect can be enhanced. Further, after the power of the refrigerator is turned on, the temperature of each of the storage compartments 13 to 17 is high, so that it is important to rapidly cool to a certain low temperature. Further, during the cooling period, the temperature of the portion of the valve device 37 is also high, so that there is less possibility of condensation, and it is not necessary to perform energization for self-heating. During the so-called cooling period, specifically, it can be judged that the loop of the freezer compartment cooling mode or the refrigerating compartment cooling mode is executed a predetermined number of times (for example, three times) after the power source is turned on until a predetermined time (for example, 150 minutes) elapses. Or the freezer compartment cooler 32 until it becomes a predetermined temperature (for example, - 20 ° C), or in the freezing compartment 13 (or the ice making compartment 14) until it becomes one of predetermined temperatures (for example, - 1 ° ° C). -21 - 200813381 (18) Therefore, after the power is turned on, it is possible to prevent the power supply to the self-heating of the valve motor 53 by the cooling period until the temperature of the storage compartments 13 to 17 is lowered to a predetermined temperature or lower. . Thereby, power can be saved by prohibiting the energization in a state where the condensation does not occur. In the mode in which the valve motor 53 is energized for self-heating, in the closed state of the shutter 50, energization of the coils 56 and 57 of the two phases is performed in a mode in which the shutter 50 is closed. • In the open state of the plate 50, energization of the coils 56 and 57 of the two phases is performed in a mode in which the shutter 50 is opened. Thereby, the intended purpose can be achieved, and the shifting of the pedal due to the repeated opening and closing of the shutter 50 can be reduced, and the so-called fastening effect can be obtained. Further, the present invention is not limited to the above-described respective embodiments, and various modifications can be made, for example, to the structure (arrangement) of each chamber portion of the electric ice box main body or the position at which two coolers are provided. Further, although the valve device for controlling the flow of the cold air to the switching chamber is described, the present invention is also applicable to a valve device for controlling the flow of the cold airflow toward the refrigerating chamber, for example, in a refrigerator having a cooler. In the case where the two storage compartments are separately controlled to control the flow of the cold air, two valve devices can be provided, and the two valve devices can also be combined into one component. In addition, the specific number of the above-mentioned set temperature, time, and the like is merely an example, and can be appropriately changed, and can be appropriately changed without departing from the scope of the present invention. [Brief Description of the Drawings] -22- 200813381 (19) Fig. 1 is a flow chart showing a processing procedure relating to energization control for self-heating of a valve motor, according to an embodiment of the present invention. Fig. 2 is a longitudinal sectional side view showing the entire structure of the refrigerator in abbreviating manner. * Figure 3 is an enlarged longitudinal section of the structure showing the cooler chamber and its vicinity. Figure 4 is a perspective view of the valve device. φ Fig. 5 is an explanatory diagram of a method of energizing the coil of the valve motor. Fig. 6 is a block diagram showing the construction of the motor of the main portion. Fig. 7 is a view showing the structure of the refrigeration circuit. Fig. 8 is a graph showing the results of an experiment for investigating the temperature change of the valve device. Fig. 9 is a view similar to Fig. 1 showing another embodiment of the present invention. The first diagram is a diagram corresponding to the fourth diagram showing a conventional example. [Description of main component symbols] 11 : Refrigerator main body 1 7 : Switching chamber 27 : Switching chamber temperature sensor 29 : Freezer compartment cooler 3 2 : Freezer compartment cooler 3 3 : Freezing blower fan 34 : Defrost Heater -23- (20) 200813381 36 : Pipe 3 7 : Valve device 3 8 : Freezer circuit 48 : Control device (power control device) 49 : Frame portion 49 a : Opening portion 5 〇: baffle
5 1 ·驅動機構部 52 :殼體 53 =氣門馬達 5 4 :旋轉軸 5 6 : A相位線圈 5 7 : B相位線圈 5 8 :除霜感應器 5 9 :外氣溫感應器5 1 · Drive mechanism part 52 : Housing 53 = Valve motor 5 4 : Rotary shaft 5 6 : A phase coil 5 7 : B phase coil 5 8 : Defrost sensor 5 9 : Outer air temperature sensor
-24--twenty four-