548393 五、發明説明（1 ) [發明所屬技術領域] 本發明係有關作爲運送生鮮食品之貨櫃等而使用之冷 藏庫。 [先前技術] 以此種冷藏庫而言，例如日本專利特開平10- 73360號 公報所記載，係具有在前面有開關門之斷熱性的冷藏庫本 體，和配置在冷藏庫內之底面側的蓄冷型冷卻器，和執行 冷卻器之蓄冷的冷凍裝置，以及使冷藏庫內之空氣循環的 冷藏庫內用送風機之構成，乃爲眾所皆知。在此冷藏庫中 ，用外部電源驅動冷凍裝置以執行冷卻器之蓄冷，且解除 與外部電源之接續後，使用予先以外部電源充電的直流內 部電源來驅動冷藏庫內用送風機以使庫內之空氣循環，進 行在運送中的冷藏運轉。又在冷藏庫本體之上部設置有機 械室’在機械室內，對冷凍裝置之凝結器送入冷卻用空氣 之複數個凝結器用送風機係配設在冷藏庫本體的寬度方 向。 [發明所欲解決之課題] 但是該冷藏庫中，在進行冷卻器之蓄冷之際，於冷藏庫 本體內收納有物品時，雖然有時庫內用送風機會作動，即 使在此場合也以直流電源驅動庫內用送風機。然而各凝結 器用送風機係使用交流馬達以外部的交流電源來驅動，相 較於直流馬達，具有消費電力大的問題點。 但是若對凝結器用送風機使用直流馬達，雖可降低消費 電力’然而具有因要追加用於驅動凝結器用送風機之直流 548393 五、發明説明（2) 電源裝置，和電源裝置複雜化，製造成本變高的問題點。 且若將庫內用送風機之直流電源裝置作成與凝結器用送風 機爲共通，則雖可較前述之場合將電源裝置更小型化，但 由於冷藏庫具有複數台凝結舞用送風機，所以在開始各送 風機動作之際的起動電流變大，而有需要其分量之大電源 容量的問題點。 本發明係有鑑於該問題所成者，其目的爲提供一種冷藏 庫，其可將送風機之電源裝置簡單化，同時降低電源容量 以謀求低成本化。 [解決課題之手段] 本發明爲達成該目的，係如在申請專利範圍第1項中之 一種冷藏庫，其具有；可收納任何物品的冷藏庫本體； 配置在冷藏庫本體內之規定位置的蓄冷型冷卻器；將冷 卻器蓄冷的冷凍裝置；對冷凍裝置的凝結器送入冷卻空 氣之複數的凝結器用送風機；和，經由冷卻器使冷藏庫 內的空氣循環的冷藏庫內送風機；以及用外部電源來充 電之直流的內部電源等，其中在與外部電源接續狀態中 ，將冷凍裝置驅動以進行冷卻器之蓄冷，同時在解除與 外部電源之接續後，則用內部電源來驅動冷藏庫內用送 風機以進行冷藏庫內之空氣的循環，其特徵爲具有：直 流電源裝置，將該外部電源之電流由交流變換爲直流； 電源切換裝置，在與外部電源接續狀態中，以直流電源裝 置各別將各凝結器用送風機及冷藏庫內用送風機予以驅動 ’而一解除與外部電源之接續後，則以內部電源來驅動冷 -4- 548393 五、發明説明（3 ) 藏庫內用送風機；控制裝置，在各凝結器用送風機及冷藏 庫內用送風機作動之際，彼此取了時間差後再使各送風機 作動。藉此，因在與外部電源接續狀態中，以直流電源裝 置將各凝結器用送風機及冷藏庫內用送風機予以驅動，而 一解除與外部電源之接續後，則以內部電源來驅動冷藏庫 內用送風機，所以接續在外部電源之際，各凝結器用送風 機及冷藏庫內用送風機不會各自以不同的電源來驅動。且 要作動各送風機之際，因彼此取了時間差才開始作動，所 以各送風機同時開始作動時，不會產生起動電流變大的情 事。 又，在申請專利範圍第2項中，係如申請專利範圍第1 項之冷藏庫，爲以單一的直流電源裝置來驅動該各凝結器 用送風機，及冷藏庫內用送風機，因此各送風機係用單一 的直流電源裝置來驅動。 此外，在申請專利範圍第3項中，係如申請專利範圍第1 項或第2項之冷藏庫，其中具有控制裝置，該各凝結器用 送風機要作動之際，冷藏庫內用送風機正作動時，在冷藏 庫內用送風機停止之後，彼此取規定之時間差後，再開始 作動各送風機。藉此，加上申請專利範圍第1或2項的作 用，各凝結器用送風機要作動之際而冷藏庫內用送風機正 作動的場合時，在冷藏庫內用送風機停止之後，各送風機 之作動係各自取時間差後才開始，所以即使各凝結器用送 風機，和冷藏庫內用送風機爲各自受控制，也不需要增大 在各凝結器用送風機起動時之電流。 548393 五、發明説明（4) [本發明之實施形態] 第1至4圖爲表示本發明之一實施形態，第1圖係表示 冷藏庫的整體斜視圖，第2圖係其側剖面圖，第3圖係其 方塊圖。第4圖係表示控制部之動作的時間關係圖。 此冷藏庫爲具備有：前方開口之斷熱性的冷藏庫本體 1 ;將冷藏庫內予以冷卻的蓄冷型冷卻器2 ;進行冷卻器 2之蓄冷的冷凍裝置3 ;對冷凍裝置3之凝結器送入冷卻空 氣的2台凝結器用送風機4 ;使冷藏庫內之空氣循環的冷 藏庫內用送風機5 ;作爲內部電源之電池6 ;將外部電源A 之電流由交流變換成直流的直流電源裝置7 ;和，將各送 風機4,5的使用電源切換爲直流電源裝置7及電池6的任 一方之電源切換裝置8 ;以及控制各送風機4,5之動作的控 制部9。 冷藏庫本體1具有開關前面開口部之斷熱性的門1 a，冷 藏庫本體1之下部安裝有移動用的腳輪1 b。且冷藏庫本體 1之上部設置有機械室lc。另外在冷藏庫本體丨內的底面 側及背面側’設置有用區隔板1 d區隔成冷藏庫內側的通 氣道1 e ’通氣道1 e之一端在冷藏庫內的下部前端側有開 口，另一端在冷藏庫內的背面側上部有開口。 冷卻器2係配置在冷藏庫本體1之底面側的通氣道1 e內 ’以區隔板1 d將其上方覆蓋。冷卻器2具有接續在冷凍回 路的冷媒管2a ’和以熱式接觸冷媒管2a的蓄冷材料（未圖 示）’形成以在冷媒管2a流通之低溫冷媒來將蓄冷材料蓄 冷’再以蓄冷材料來冷卻冷藏庫內部。 548393 五、發明説明（5) 冷凍裝置3係以冷卻插1 2 (蒸發窃）’壓縮機3 a以及凝結 器3b來構成習知的冷凍回路，而壓縮機3a以及凝結器3b 爲收納在機械室1 c內部。 各凝結器用送風機4係配置在機械室1 c的，且彼此倂設 在冷藏庫本體1之寬度方向（未圖示），又各凝結器用送風 機4爲用各別的直流馬達來旋轉，而各馬達Ml , M2係接續 在馬達驅動電路1 0。 冷藏庫內用送風機5係配置在通氣道le之另一端，形成 自通氣道1 e之一端吸入的空氣從通氣道1 e之另一端往冷 藏庫內吐出。且冷藏庫內用送風機5係依直流馬達M3來旋 轉，而馬達M3係接續在馬達驅動電路1 0。 電池6通過充電器6a而接續在外部電源A(例如單相200 伏特的商用交流電），形成以外部電源來蓄積直流電力。 直流電源裝置7爲接續在外部電源A，形成將外部電源A 之電流由交流變換爲直流。 電源切換裝置8爲以外部電源A驅動之繼電器所構成’ 與外部電源A接續時，在馬達驅動電路1 〇上連接直流電源 裝置7，在解除與外部電源之接續時形成在馬達驅動電 路1 0上連接電池6般地進行切換動作。 控制部9爲以微電腦所構成，而連接在馬達驅動電路1 〇 上。此控制部9乃依據未圖示之冷藏庫內感測器或蓄冷感 測器的檢測信號以將各送風機4，5作動及停止’同時在各 送風機4，5作動之際，形成彼此取規定之時間差再作動。 如以上所構成的冷藏庫中，經由與外部電源A之接續使 548393 五、發明説明（6) 冷凍裝置3作動，以執行冷卻器2的蓄冷。此時，冷凍裝 置3之壓縮機3 a和各凝結器用送風機4同時作動，以對凝 結器3b送入冷卻用空氣，且冷藏庫內送風機5作動以行冷 藏庫內部之冷卻。在此場合，各送風機4，5係各自以直流 電源裝置7來驅動。又冷藏庫用在物品之運送場合等，一 解除與外部電源之接續時，在馬達驅動電路1 〇之使用電 源以電源切換裝置8切換成電池6，則冷藏庫內用送風機 5係由電池6來驅動。 在各送風機4,5作動之際，如第4圖之時間關係圖所示 ，首先1台凝結器用送風機4開始作動，經過規定時間T1 (例如2秒）之後，其他的凝結器用送風機4開始作動，再 經過規定時間T1之後，冷藏庫內用送風機5開始作動。又 在作動各凝結器用送風機4之際，而冷藏庫內用送風機5 在作動時，將冷藏庫內用送風機5停止，在經過規定時間 T2 (例如1秒）之後，與前述同樣地，1台凝結器用送風機4 開始作動，經過規·定時閒T1 (例如2秒）之後，其他的凝結 器用送風機4開始作動，再經過規定時間T1之後，冷藏庫 內用送風機5開始作動。 如此，依本實施形態之冷藏庫，因作成與外部電源A接 續時，以直流電源裝置7來驅動凝結器用送風機4和冷藏 庫內用送風機5，而在一解除與外部電源之接續時，則以 直流的電池6來驅動冷藏庫內用送風機5，所以接續在外 部電源A之際，各凝結器用送風機4和冷藏庫內用送風機 5並不各自以不同的電源來驅動，所以可將各送風機4,5 548393 五、發明説明（7) 用的電源裝置予以簡單化。 另外在作動各送風機4，5之際，由於彼此取規定之時間 差再開始作動，所以不會產生在各送風機4，5之動作同時 開始的起動電流增大的情事，可減低電源容量。此時， 在作動凝結器用送風機4時，冷藏庫內用送風機5在作動 的場合，在冷藏庫內用送風機5之起動電流爲比凝結器用 送風機4的起動電流更小時，停止冷藏庫內用送風機5之 後，藉由各送風機4，5之動作係各自取時間差後才開始， 即使凝結器用送風機4和冷藏庫內用送風機5爲各自被控 制的場合時，也不需要增大各凝結器用送風機4起動時之 電流，可確實地達成降低電源容量。 進而，因以單一的直流電源裝置來驅動各送風機4，5， 所以可使電源裝置更簡單化。 又，在該實施例中，雖然例示具有共計1台的冷藏庫 內用送風機5，和2台的凝結器用送風機4，但在具有3台 以上之凝結器用送風機4的場合時，或多台的冷藏庫內 用送風機5的場合也可獲得同樣的效果。 [發明效果] 如以上之說明，依申請項第1項的冷藏庫，在與外部 電源A接續之際，各凝結器用送風機和冷藏庫內用送風 機並不各自以不同的電源來驅動，所以可將各送風機用 的電源裝置予以簡單化。且在同時作動各送風機4，5時， 不會產生在各送風機4，5之同時開始動作時之起動電流 增大的情事，可減低電源容量以謀求降低成木。 548393 五'發明説明（8) 又依申請項第2項的冷藏庫，再加上申請項第1項的效 果，可將電源裝置更簡單化’所以在實用化上極爲有利。 且依申請項第3項的冷藏庫，再加上申請項第1項或第2 項之效果，即使各凝結器用送風機和冷藏庫內用送風機 爲各自受各別控制的場合時，也不會增大各凝結器用送 風機之起動電流，可確實地達成降低電源容量。548393 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a refrigerator for use as a container or the like for transporting fresh food. [Prior Art] Such a refrigerator is described in, for example, Japanese Patent Laid-Open No. 10-73360, and includes a refrigerator main body having a heat-insulating property with a door opening and closing in front, and a bottom side disposed inside the refrigerator. The structures of the cold storage cooler, the refrigerating device that performs the cold storage of the cooler, and the air blower in the refrigerator that circulates the air in the refrigerator are well known. In this refrigerator, an external power source is used to drive a freezing device to perform cold storage of a cooler, and after disconnection from the external power source, a DC internal power source previously charged with an external power source is used to drive a blower in the refrigerator to make the interior of the refrigerator The air is circulated to perform a refrigerating operation during transportation. An organic machine room is also provided on the upper part of the refrigerator body. In the machine room, a plurality of condenser blowers for sending cooling air to the condenser of the freezing device are arranged in the width direction of the refrigerator body. [Problems to be Solved by the Invention] However, in this refrigerator, when storing items in the refrigerator body while the cooler is being stored, although the refrigerator may be operated by an air blower in the refrigerator, even in this case, DC is used. The power supply drives the blower in the warehouse. However, each condenser blower uses an AC motor to drive it with an external AC power source. Compared with a DC motor, it has a problem of large power consumption. However, if a DC motor is used for the condenser blower, the power consumption can be reduced. However, it is necessary to add a direct current for driving the condenser blower. Problem point. And if the DC power supply device of the blower in the store is made in common with the condenser blower, although the power supply device can be made smaller than the previous case, since the refrigerator has a plurality of condensation dance blowers, each blower is started at the beginning The starting current at the time of operation becomes large, and there is a problem that a large power supply capacity is required. The present invention has been made in view of this problem, and an object thereof is to provide a refrigerator which can simplify a power supply device of a blower and reduce a power supply capacity to reduce cost. [Means for Solving the Problem] To achieve the object, the present invention is a refrigerator as in item 1 of the scope of patent application, which has: a refrigerator main body that can store any article; Cold-storage type coolers; refrigerating devices that cool the coolers; a plurality of condenser blowers that send cooling air to the condensers of the freezers; and refrigerator blowers that circulate air in the refrigerators through the coolers; and The DC internal power supply, which is charged by an external power source, drives the refrigerator to cool the cooler in the state of being connected to the external power source, and after the connection with the external power source is released, the internal power source is used to drive the refrigerator. An air blower is used to circulate the air in the refrigerator, and is characterized by: a DC power supply device that converts the current of the external power supply from AC to DC; a power switching device, in a state connected to the external power supply, each of the DC power supply devices Do not drive each condenser fan and the fan inside the refrigerator. After the power supply is connected, the internal power supply is used to drive the cold -4- 548393 V. Description of the Invention (3) Fans in the storage room; The control device takes each other when the condenser fan and the fan in the refrigerator are operated. After the time difference, each blower is activated. Therefore, in the connection state with the external power supply, each condenser blower and the refrigerator blower are driven by a DC power supply device, and after the connection with the external power supply is released, the internal power supply is used to drive the refrigerator The blower, so when connected to an external power supply, each condenser blower and the refrigerator blower will not be driven by different power sources. In addition, when the blowers are to be operated, they are started because of the time difference between them. Therefore, when the blowers start to operate at the same time, the starting current does not increase. Moreover, in the second item of the scope of patent application, the refrigerator as in the first item of the scope of patent application is to use a single DC power supply device to drive the condenser fan and the refrigerator fan, so each fan is used Single DC power supply unit to drive. In addition, in item 3 of the scope of patent application, the refrigerating equipment such as item 1 or 2 of the scope of patent application has a control device, and when the condenser blower is to be operated, when the blower in the refrigerator is operating After stopping the blower in the refrigerator, take a predetermined time difference from each other, and then start to operate each blower. This, together with the effect of item 1 or 2 of the scope of the patent application, when the condenser blowers are to be operated and the blowers in the refrigerator are operating, after the blowers in the refrigerator are stopped, the operating system of each blower is stopped. Only after the time difference is taken, so even if each condenser fan and the refrigerator fan are controlled separately, it is not necessary to increase the current when each condenser fan is started. 548393 V. Description of the invention (4) [Embodiments of the present invention] Figures 1 to 4 show one embodiment of the present invention. The first figure is an overall perspective view of the refrigerator, and the second figure is a side sectional view. Figure 3 is its block diagram. Fig. 4 is a timing chart showing the operation of the control unit. This refrigerator is provided with: a thermally insulated refrigerator body 1 with a front opening; a cold storage cooler 2 for cooling the refrigerator; a refrigerating device 3 for cooling the cooler 2; and a condenser for the refrigerating device 3 2 condenser blowers 4 for cooling air; blowers 5 for refrigerators that circulate the air in the refrigerator; batteries 6 as internal power sources; DC power supply devices 7 for converting the current of external power A from AC to DC; And, the used power supply of each blower 4, 5 is switched to either the DC power supply device 7 or the power supply switching device 8 of the battery 6; and a control unit 9 that controls the operation of each blower 4, 5. The refrigerator main body 1 has a heat-insulating door 1 a for opening and closing the front opening portion, and a caster 1 b for movement is mounted on the lower portion of the refrigerator main body 1. A machine room lc is provided on the upper part of the refrigerator body 1. In addition, a useful area partition 1 d is provided on the bottom side and the back side of the refrigerator body 丨 to partition into an air passage 1 e on the inside of the refrigerator. One end of the air passage 1 e has an opening at the lower front end side in the refrigerator. The other end has an opening in the upper part of the back side in the refrigerator. The cooler 2 is arranged in the air passage 1 e ′ of the bottom side of the refrigerator main body 1 ′ and covers it with a partition 1 d. The cooler 2 includes a refrigerant tube 2a 'connected to the refrigeration circuit and a cold storage material (not shown)' that is in thermal contact with the refrigerant tube 2a. The low-temperature refrigerant flowing through the refrigerant tube 2a is used to store the cold storage material. To cool the inside of the refrigerator. 548393 V. Description of the invention (5) The refrigerating device 3 is a conventional refrigeration circuit with a cooling plug 1 2 (evaporator) and a compressor 3 a and a condenser 3 b. The compressor 3 a and the condenser 3 b are housed in machinery. Room 1c interior. The condenser blowers 4 are arranged in the machine room 1 c and are arranged in the width direction (not shown) of the refrigerator main body 1. Each condenser blower 4 is rotated by a separate DC motor. The motors M1 and M2 are connected to the motor driving circuit 10. The blower 5 in the refrigerator is arranged at the other end of the air passage le, and the air sucked in from one end of the air passage 1 e is discharged from the other end of the air passage 1 e into the refrigerator. Moreover, the fan 5 in the refrigerator is rotated by the DC motor M3, and the motor M3 is connected to the motor driving circuit 10. The battery 6 is connected to an external power source A (for example, a single-phase 200-volt commercial AC power) via a charger 6a, and forms an external power source to store DC power. The DC power supply device 7 is connected to the external power supply A and converts the current of the external power supply A from AC to DC. The power source switching device 8 is constituted by a relay driven by an external power source A. When connected to the external power source A, a DC power source device 7 is connected to the motor drive circuit 10, and is formed in the motor drive circuit 10 when the connection to the external power source is released. The battery 6 is connected to perform the switching operation. The control unit 9 is constituted by a microcomputer, and is connected to the motor drive circuit 10. This control unit 9 activates and stops each blower 4, 5 according to the detection signal of a sensor or a cold storage sensor in the refrigerator (not shown), and at the same time, when the blowers 4, 5 are activated, a mutual rule is established. Time difference. In the refrigerator constructed as described above, 548393 is connected to the external power supply A. 5. Description of the invention (6) The refrigerating device 3 is operated to perform cold storage of the cooler 2. At this time, the compressor 3a of the refrigerating device 3 and the condenser blowers 4 are simultaneously operated to send cooling air to the condenser 3b, and the refrigerator blower 5 is operated to cool the interior of the refrigerator. In this case, each of the blowers 4 and 5 is driven by a DC power supply device 7. In addition, the refrigerator is used for the transportation of articles. When the connection with the external power is released, the power supply of the motor drive circuit 10 is switched to the battery 6 by the power switching device 8 and the battery 5 in the refrigerator is powered by the battery 6. To drive. When each blower 4, 5 is activated, as shown in the time relationship diagram of FIG. 4, one condenser blower 4 starts to operate, and after a predetermined time T1 (for example, 2 seconds), the other condenser blower 4 starts to operate. After a predetermined time T1 has elapsed, the blower 5 in the refrigerator starts to operate. When the condenser blower 4 is operated, the refrigerator blower 5 is stopped when the condenser blower 5 is activated, and after a predetermined time T2 (for example, 1 second) has elapsed, one set is the same as described above. The condenser blower 4 starts to operate. After the regular and regular idle time T1 (for example, 2 seconds), the other condenser blower 4 starts to operate. After a predetermined time T1, the refrigerator blower 5 in the refrigerator starts to operate. In this way, according to the refrigerator of this embodiment, when the connection to the external power supply A is made, the DC power supply device 7 is used to drive the condenser blower 4 and the refrigerator blower 5, and when the connection with the external power supply is released, The DC battery 6 is used to drive the blower 5 in the refrigerator, so when connected to the external power supply A, the condenser blower 4 and the refrigerator 5 are not driven by different power sources, so each blower can be driven. 4,5 548393 V. Description of the invention (7) The power supply device used is simplified. In addition, when the blowers 4 and 5 are operated, they are started at a predetermined time difference from each other, so that the starting current does not increase when the blowers 4 and 5 are operated simultaneously, and the power supply capacity can be reduced. At this time, when the blower 4 for the condenser is operated and the blower 5 for the refrigerator is operated, the start current of the blower 5 for the refrigerator is smaller than the start current of the condenser blower 4 and the blower for the refrigerator is stopped. After 5, the operation of each blower 4, 5 is started after taking the time difference. Even if the condenser blower 4 and the refrigerator blower 5 are controlled separately, it is not necessary to increase the condenser blowers 4 The current during startup can reliably reduce the power supply capacity. Furthermore, since the blowers 4 and 5 are driven by a single DC power supply device, the power supply device can be simplified. In this embodiment, although a total of one refrigerator blower 5 and two condenser blowers 4 are exemplified, when three or more condenser blowers 4 are used, a plurality of blowers 4 for condensers may be used. The same effect can be obtained when the blower 5 is used in a refrigerator. [Effects of the Invention] As described above, according to the refrigerator in the first item of the application, when the refrigerator is connected to the external power supply A, each condenser fan and the refrigerator fan are not driven by different power sources, so they can be driven by different power sources. The power supply unit for each blower is simplified. In addition, when the blowers 4 and 5 are operated at the same time, the starting current does not increase when the blowers 4 and 5 start to operate at the same time, and the power supply capacity can be reduced in order to reduce the amount of wood. 548393 Description of the 5 'invention (8) According to the refrigerator of the second item of the application and the effect of the first item of the application, the power supply device can be simplified', which is extremely advantageous in practical use. And according to the refrigerator in item 3 of the application, plus the effect of item 1 or 2 in the application, even if each condenser fan and the fan in the refrigerator are separately controlled, they will not be affected. Increasing the starting current of each condenser blower can reliably reduce the power supply capacity.
[圖式之簡單說明] 第1圖係表示本發明實施形態之冷藏庫的整體斜視圖。 第2圖係冷藏庫的側面剖面圖。 第3圖係冷藏庫的方塊圖。 第4圖係表示控制部之動作的時間關係圖。 [符號說明] 1 ____冷藏庫本體 2 ....冷卻器 3 ____冷凍裝置[Brief Description of the Drawings] FIG. 1 is an overall perspective view showing a refrigerator according to an embodiment of the present invention. Fig. 2 is a side sectional view of the refrigerator. Figure 3 is a block diagram of the refrigerator. Fig. 4 is a timing chart showing the operation of the control unit. [Symbol description] 1 ____Refrigerator body 2 .... Cooler 3 ____Freezing device
4 ____凝結器用送風機 5 ____冷藏庫內用送風機 6 ____電池 7 ....直流電源裝置 8 ....電源切換裝置 9 ____控制部 A ....外部電源 -10-4 ____ blower for condenser 5 ____ blower for refrigerator 6 ____ battery 7 ... DC power supply unit 8 ... power supply switching device 9 ____ control unit A ... external power supply -10-