M405555 五、新型說明： 【新型所屬之技術領域】 本創作是有關於一種使用於低溫或急速冷凍機之除霜構造，具 有可以快速除霜，以提高除霜效率者。 【先前技術】 低溫或急速冷凍機每於製冷運轉一段時間之後，其蒸發器广 之管路11，與韓片12，上，均會凝結一層冰霜，因此，冷康機 每於製冷運轉若干_之後，必須進行除霜工作，以維持蒸發 器1，可正常進行熱交換功能。習用之除霜方式如第一圖所示: 將壓縮機2,之祕高溫賊冷媒，鱗f 3，直解人蒸發器^ 之管路11，進行除霜工作，由於導入蒸發器i，之管路^，的高 壓高溫熱氣冷媒均會先與蒸發器i，之上游管路u,與轉片^ 進行熱錢’敝賴僅殘紐賴量的高壓低狀氣 會與蒸發器1，之下游管路13，_14，進行熱交換，_ 造成上游管路U，躺片12，雖然已經完成除霜工作： =繼續在進行熱交換’而消耗高㈣溫熱氣冷媒之執量疋: 此曰造成整個系統的除霜效果緩慢，以及冷練物 過長而忽冷忽熱而不新鮮等問題，故不理想。因:/相=作 提供-種除霜構造，於上游管路 \ 2果能夠 工作後，即不再消杯古汽丄 乃12已經完成除霜 n 溫熱氣冷媒之熱量，古 >里熱氣冷媒直接與下游管路13，與· 14，=间^ 成相麟，有效解決上述缺失，成為本創作研 3 侧5555 創之動機所在。 【新型内容】 創作人有鑑於此，乃積極思考而予以改良，提供一種低溫或糸 速冷束機之除霜構造，係包含一冷束裝置和一除霜事置·I* 床裝置係具有-冷賴縮機一冷懸、—貯液器二熱^ 器、-冷康電磁閥、一膨闕和一蒸發器，可運轉製冷；該除 霜裝置具有-電源、—供使用者選擇做為冷_環二或: 工作之關触、-固設於蒸發器情冷媒通路叫貞測蒸發^ 中段冷媒通路内之冷媒溫度而具有一溫度感應器之溫朗 關、-第-導管、一可以阻斷或不阻斷第一導管内的高壓= 氣態冷媒流通之第-除霜電磁閥、—第二導管和—可以阻^ 不阻斷第二導㈣的麵高溫氣態冷職通之第二除霜電磁 閥，错由上述構造，因有設在蒸發器之中段冷媒通路的溫度感 應益之作動第-除霜電磁閥和冷輕_之阻斷，高壓高溫氣 態冷媒會流經第一導管，谁笛— 示导吕進入第一導管，經由第二除霜電磁 閥，直接進入低溫或急速用蒸發器之中段冷媒通路和下游管路 及其韓片進行熱交換’而不再使已經完成除霜工作之上游管路 及其則消耗缝高溫熱氣冷媒之熱量，而能使高壓高溫 t媒直接與下騎路與其則進行熱交換，可峨速除霜，、以 知向除霜效率者。 【實施方式】 為了讓本創作之前述及其他目的、特徵與優點能更明顯被了 4 解’下文特舉本創狀較佳實施例，並配合所關式，作詳細 說明。請參閱第二、三圖所*，本創作之—種低溫或急速冷康 機之除霜構造，係包含-冷魏置丨和―除霜裝置2;該冷减裝 置1係具有-冷賴賴11壓縮冷賊高壓高溫氣態冷媒經 第一冷媒通路18依圖面箭頭方向，流經冷凝器12於冷凝器12 中釋放熱量後，使冷媒凝結成常溫紐之液態冷媒，再至高壓 端貯液器13貯存’再經過熱交換㈣後，再經過冷束電磁閥 15、％脹閥16將液態冷媒膨脹處理後，經第二冷媒通路Η進入 低溫或急速用蒸發器17吸收熱量’使冷媒變成低壓常溫之氣態 冷媒，再至熱交換器14氣液分離處理後，再回到冷凍壓縮機u 中’即完成一次運轉製冷循環流程；該除霜裝置2具有一可以 作動電器設備之電源20、一供使用者選擇做為冷凍循環工作或 除霜工作之開關旋鈕21、一固設於蒸發器17中段冷媒通路171 以偵測蒸發器17中段冷媒通路171内之冷媒溫度而具有一溫度 感應器22之溫度開關23、一供高壓高溫氣態冷媒流通之第一導 管24、一可以阻斷或不阻斷第一導管24内的高壓高溫氣態冷媒 流通之第一除霜電磁閥25、一供高壓高溫氣態冷媒流通之第二 導管26、一可以阻斷或不阻斷第二導管26内的高壓高溫氣態冷 媒流通之第二除霜電磁閥27;其中，該開關旋鈕21具有一第一 活動接點211、一第二活動接點212、一第一固定接點213與一 第二固定接點214 ;該溫度開關23具有一固定接點23卜一第一 活動接點232與一第二活動接點233;該第一除霜電磁閥25與溫 度開關23之第一活動接點232固定電性連接；該第二除霜電磁 閥27與溫度開關23之第一活動接點233固定電性連接；電源2〇 分別與開關旋纽21之第一活動接點211和第二活動接點212電 性連接；開關旋鈕21之第一固定接點213與冷;東電磁閥π固定 電性連接；開關旋鈕21之第二固定接點214與溫度開關23之固 定接點231固定電性連接；第一除霜電磁閥25固設在第一導管 24上之適當處，可以因為溫度開關23之固定接點231與第一活 動接點232之導通或未導通’而使第一除霜電磁閥25之高壓高 溫氣態冷媒通路成開路或閉路；第一導管24之第一端241與介 於冷凍壓縮機Π和冷凝器12之間的第一冷媒通路18連通；第一 導管24之第二端242與介於膨脹閥16和蒸發器17之間的第二冷 媒通路19連通；第二除霜電磁閥27固設在第二導管26之適當 處，可以因為溫度間關23之固定接點231與第二活動接點233 之導通或未導通，而使第二除霜電磁間27之高壓高溫氣態冷媒 通路成開路或閉路；第二導管26之第一端261與介於第一除霜 電磁閥25和第一除霜電磁閥25之第一端241之間的第一導管24 連通；第二導管26之第二端262與蒸發器17中段冷媒通路171 連通。 茲將本創作之實施及功效，詳細敘述如後： 請參閱第二及三圖所示’先將開關旋妨21置於冷凍運轉位置’ 亦即使第一活動接點211與第一固定接點213導通，冷凍電磁閥 15會因電源之磁吸而導通，使冷凍電磁閥丨5之冷媒通路呈開路 M405555 狀，未阻斷冷媒通過；與此同時，第二活動接點212與第二固 定接點214係未導通’第一除霜電磁閥25和第二除霜電磁閥27 因無電源而未導通呈閉路狀’阻斷冷媒通過；由低溫低回壓或 低溫二段壓縮機即冷凍壓縮機1壓縮冷媒成高壓高溫氣態冷 媒，經第一冷媒通路18依圖面箭頭方向，流經冷凝器a於冷凝 器12中釋放熱量後’使冷媒凝結成常溫高壓之液態冷媒，再至 高壓端貯液器13貯存’再經過熱交換器14後，再經過冷珠電磁 閥15、膨服閥16將液態冷媒膨服處理後，經第二冷媒通路19 進入低溫或急速用蒸發器17吸收熱量，使冷媒變成低壓常溫之 氣態冷媒，再至熱交換器14氣液分離處理後，再回到冷康壓縮 機11中’即完成一次冷凍循環流程；而冷凍機在運轉一段時間 之後，在蒸發器Π上即會逐漸凝結冰霜，會影響到蒸發器p 熱交換作用所產生的冷束效果’因此，必須將蒸發器1 γ上之冰 霜除去，以維持冷凍機處於最佳的冷康效果。 當要進行除霜工作，請參閱第二、四圖所示，使用者將開關旋 鈕21置於除霜運轉位置，使第一活動接點211與第一固定接點 213因開關旋钮21置於除霜運轉位置而未導通，使冷凍電磁閥 15之冷媒通路呈閉路狀，阻斷冷媒通過；與此同時，因開關旋 鈕21置於除霜運轉位置，使第二活動接點212與第二固定接點 214導通，由於固設於蒸發器17中段冷媒通路171之溫度感應器 22偵測蒸發器17中段冷媒通路丨71内之冷媒溫度低於溫度感應 器22之設定溫度，溫度開關23的固定接點231與第一活動接點 7 M405555 232維持呈導通狀，而溫度開關23關定接點231與第二活動接 點233呈未導通狀’所以第一除霜電磁閥25因電源而導通，而 第二除霜電磁閥27因無電源而未導通，使第二除霜電磁闊打 之冷媒通路呈閉路狀，阻斷冷媒通過；與此同時，第一除霜電 磁閥25呈開絲，缝賴1縫冷媒成高壓高溫氣態冷媒會 流經第-導管24、第-除霜電磁閥25，進入低溫或急速用蒸發· 器17，先與蒸發器17之上游管路17〇及其鰭片進行熱交換，再 流入蒸發器17之下游管路172而與下游管路172及其鰭片進行鲁 熱父換。由於，南壓尚溫氣態冷媒都是先與上游管路與其 鰭片進行熱交換，所以會先將蒸發器Π之上游管路170與其鰭 片上之冰霜除去，完成上游管路170除霜運轉工作； 聿 §上游管路170已完全除霜之同時，通度感應器22债測蒸發器 1 Π中段冷媒通路171内之冷媒溫度高於溫度感應器22之設定溫 度’請參閱第二、五圖所示，溫度開關23會作動而使溫度開關 23的固定接點231與第一活動接點232呈未導通狀，而溫度開關 鲁 23的固定接點231與第二活動接點233呈導通狀，第一除霜電磁 閥25因無電源而未導通’阻斷冷媒通過；與此同時，第二除霜 電磁閥27因電源而導通’使第二除霜電磁閥27之冷媒通路呈開 路狀’未阻斷冷媒通過’由壓縮機1壓縮冷媒成高壓高溫氣態 冷媒會流經第一導管24，因第一除霜電磁閥25之阻斷，進入第 二導管26，經由第二除霜電磁閥27 ’進入低溫或急速用蒸發器 17’與蒸發器17之中段冷媒通路Π1和下游管路172及其鰭片進 M405555 行熱父換’將&發H17之下游管路172與其則上之冰霜除 去’完成下辭路Π2除霜_1作；#全部完成紐器此 除霜工作，使用者只需將開關频21置於树運轉位置，即可 恢復冷凍運轉。 由上述構造’當可了解本創作構造因有設在蒸發抓之中段冷 媒通路171的溫度感應器22之作動第一除霜電磁闕四和冷;東電 磁閥15之阻斷，高壓高溫氣態冷媒會流經第—導管％，進入第 二導管26，經由第二除霜電磁卿，直接進人低溫或急速用蒸 發器17之巾段冷騎路171和下辭路172及其則進行熱交 換i而不再使上辭路17〇及其則絲綠高溫熱氣冷媒之 熱量，而能使縫高溫減冷媒直接與下游管路1?2與其趙片 進行熱交換，以快速除霜，並提高除霜鱗，有效解決上述缺 失，非常理想。由於該構造為前所未有，具有新酿，且由上M405555 V. New description: [New technical field] This creation is about a defrost structure used in low temperature or rapid freezer, which has the ability to quickly defrost to improve the defrost efficiency. [Prior Art] After a period of cooling operation for a low-temperature or rapid-freezer, the evaporator 11 and the Korean film 12 will be condensed with a layer of frost. Therefore, the refrigeration machine operates several times per cooling operation. After that, defrosting work must be performed to maintain the evaporator 1, and the heat exchange function can be performed normally. The conventional defrosting method is as shown in the first figure: The compressor 2, the secret high-temperature thief refrigerant, the scale f 3, and the pipeline 11 of the human evaporator ^ are directly defrosted, and the evaporator i is introduced. The high pressure and high temperature hot gas refrigerant in the pipeline ^ will be first with the evaporator i, the upstream pipeline u, and the rotor ^ will carry out the hot money 'depending on the residual high pressure low gas and the evaporator 1, downstream Pipes 13, _14, heat exchange, _ caused upstream pipe U, lying 12, although the defrosting work has been completed: = continue to heat exchange ' and consume high (four) warm gas refrigerant 疋: This 曰It is not ideal because the defrosting effect of the whole system is slow, and the cold materials are too long and hot and cold, and not fresh. Because: / phase = for the supply - a kind of defrosting structure, after the upstream pipeline \ 2 fruit can work, that is, no longer eliminate the cup of the ancient steam 丄 12 has completed the defrosting n the heat of the warm air refrigerant, ancient > The hot air refrigerant is directly connected to the downstream pipeline 13 and the 14th phase, which effectively solves the above-mentioned defects, and becomes the motive of the creation of the 5555 of the creative research side. [New content] In view of this, the creator has improved it by thinking positively, and provides a defrosting structure for a low-temperature or idle-type cold beam machine, which comprises a cold beam device and a defrosting device, an I* bed device system. -The cold-retracting machine has a cold suspension, a liquid storage device, a cold-hydraulic solenoid valve, a swell and an evaporator, and can be operated and cooled; the defrosting device has a power supply, and is provided for the user to select For the cold _ ring two or: the work of the touch, - fixed in the evaporator refrigerant channel is called the evaporation of the middle of the refrigerant passage in the middle of the refrigerant channel temperature and has a temperature sensor temperature, the first - conduit, a The first-defrosting solenoid valve that can block or not block the high pressure in the first conduit = the circulation of the gaseous refrigerant, the second conduit and the - can block the surface of the second guide (four) The second defrost solenoid valve is wrong with the above structure. Because of the temperature sensing benefit of the refrigerant passage located in the middle of the evaporator, the first-defrosting solenoid valve and the cold light_blocking, the high-pressure high-temperature gaseous refrigerant will flow through the first Catheter, who flute - guide Lu into the first duct, via the second defrost solenoid valve Directly entering the low-temperature or rapid use of the intermediate refrigerant passage of the evaporator and the downstream pipeline and the heat exchange of the Korean wafers, and no longer make the upstream pipeline which has completed the defrosting work and the heat of the high-temperature hot gas refrigerant is consumed. It can make the high-pressure high-temperature t-media directly exchange heat with the lower riding path, and can defrost at an idle speed, and the defrosting efficiency is known. [Embodiment] The above and other objects, features and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments. Please refer to the second and third figures*, the defrosting structure of the low-temperature or rapid-cooling machine of this creation, which includes - cold Wei set and "defrost device 2"; the cooling reducer 1 has - cold Lai 11 compression cold thief high pressure high temperature gaseous refrigerant through the first refrigerant passage 18 in the direction of the arrow, after the condenser 12 releases heat in the condenser 12, the refrigerant is condensed into a liquid refrigerant of normal temperature, and then stored at the high pressure end After the liquid storage 13 is stored and then subjected to heat exchange (four), the liquid refrigerant is expanded by the cold beam electromagnetic valve 15 and the % expansion valve 16, and then passed through the second refrigerant passage to enter the low temperature or the rapid use of the evaporator 17 to absorb heat. The low-temperature normal temperature gaseous refrigerant is returned to the refrigeration compressor u after the gas-liquid separation treatment, and then the refrigeration cycle is completed. The defrosting device 2 has a power supply for the electrical equipment. a switch knob 21 for the user to select as the refrigeration cycle or defrosting operation, and a refrigerant passage 171 fixed in the middle portion of the evaporator 17 to detect the temperature of the refrigerant in the middle refrigerant passage 171 of the evaporator 17 to have a sense of temperature a temperature switch 23 of the reactor 22, a first conduit 24 for circulating a high-pressure high-temperature gaseous refrigerant, and a first defrost solenoid valve 25 for blocking or not blocking the flow of the high-pressure high-temperature gaseous refrigerant in the first conduit 24 a second conduit 26 for circulating high pressure and high temperature gaseous refrigerant, a second defrost solenoid valve 27 for blocking or not blocking the flow of high pressure and high temperature gaseous refrigerant in the second conduit 26; wherein the switch knob 21 has a first a movable contact 211, a second movable contact 212, a first fixed contact 213 and a second fixed contact 214; the temperature switch 23 has a fixed contact 23, a first movable contact 232 and a first The first defrosting solenoid valve 25 is fixedly electrically connected to the first movable contact 232 of the temperature switch 23; the second defrosting solenoid valve 27 is fixed to the first movable contact 233 of the temperature switch 23 Electrical connection; the power supply 2〇 is electrically connected to the first movable contact 211 and the second movable contact 212 of the switch knob 21; the first fixed contact 213 of the switch knob 21 is cooled; the east solenoid valve π is fixed. Sexual connection; the second fixed contact 214 of the switch knob 21 and the temperature open The fixed contact 231 of the fixed connection 231 is fixedly connected; the first defrosting solenoid valve 25 is fixed on the first conduit 24, and the fixed contact 231 of the temperature switch 23 is electrically connected to the first movable contact 232 or The high pressure high temperature gaseous refrigerant passage of the first defrost solenoid valve 25 is open or closed; the first end 241 of the first conduit 24 and the first refrigerant passage between the refrigerating compressor crucible and the condenser 12 18 communicating; the second end 242 of the first conduit 24 is in communication with the second refrigerant passage 19 between the expansion valve 16 and the evaporator 17; the second defroster solenoid valve 27 is fixed at the appropriate position of the second conduit 26, The high-pressure high-temperature gaseous refrigerant passage of the second defroster electromagnetic chamber 27 may be opened or closed due to the conduction or non-conduction of the fixed contact 231 and the second movable contact 233 of the temperature switch 23; the second conduit 26 One end 261 is in communication with the first conduit 24 between the first defrost solenoid valve 25 and the first end 241 of the first defrost solenoid valve 25; the second end 262 of the second conduit 26 is intermediate with the evaporator 17 The path 171 is connected. The implementation and efficacy of this creation are described in detail as follows: Please refer to the second and third figures to 'put the switch 21 in the freezing operation position' even if the first movable contact 211 and the first fixed contact When the 213 is turned on, the freezing solenoid valve 15 is turned on by the magnetic attraction of the power source, so that the refrigerant passage of the freezing solenoid valve 丨5 is open M405555, and the refrigerant is not blocked; at the same time, the second movable contact 212 and the second fixed The contact point 214 is not turned on. The first defroster solenoid valve 25 and the second defrost solenoid valve 27 are not turned on in a closed circuit due to lack of power supply. 'Blocking of refrigerant passes through; low temperature low back pressure or low temperature two-stage compressor The compressor 1 compresses the refrigerant into a high-pressure high-temperature gaseous refrigerant, and flows through the first refrigerant passage 18 in the direction of the arrow, and flows through the condenser a to release heat in the condenser 12, so that the refrigerant is condensed into a liquid refrigerant of normal temperature and high pressure, and then to a high pressure. The end liquid storage device 13 stores 'after passing through the heat exchanger 14, and then the liquid refrigerant is expanded by the cold bead solenoid valve 15 and the expansion valve 16, and then enters the low temperature or rapid evaporator 17 through the second refrigerant passage 19. Heat, make the refrigerant The low-temperature normal temperature gaseous refrigerant is returned to the cold-compressor 11 after the gas-liquid separation process of the heat exchanger 14 is completed, and the refrigeration cycle is completed. After the refrigeration machine is operated for a period of time, it is placed on the evaporator. That will gradually condense the frost, which will affect the cold beam effect of the heat exchange of the evaporator p. Therefore, the frost on the evaporator 1 γ must be removed to maintain the best cold effect of the freezer. When the defrosting work is to be performed, as shown in the second and fourth figures, the user places the switch knob 21 in the defrosting operation position, so that the first movable contact 211 and the first fixed contact 213 are placed by the switch knob 21. The defrosting operation position is not turned on, so that the refrigerant passage of the freezing solenoid valve 15 is closed, and the passage of the refrigerant is blocked; at the same time, since the switch knob 21 is placed at the defrosting operation position, the second movable contact 212 and the second are made. The fixed contact 214 is turned on, because the temperature sensor 22 fixed in the middle refrigerant passage 171 of the evaporator 17 detects that the temperature of the refrigerant in the middle refrigerant passage 丨 71 of the evaporator 17 is lower than the set temperature of the temperature sensor 22, and the temperature switch 23 The fixed contact 231 and the first movable contact 7 M405555 232 remain in conduction, and the temperature switch 23 sets the contact 231 and the second movable contact 233 to be non-conductive. Therefore, the first defrost solenoid valve 25 is powered. Turning on, and the second defrosting solenoid valve 27 is not turned on due to no power supply, so that the refrigerant passage of the second defrosting electromagnetic slap is closed, blocking the passage of the refrigerant; at the same time, the first defrosting solenoid valve 25 is opened Silk, sewing 1 slit refrigerant into high pressure The warm gaseous refrigerant flows through the first conduit 24 and the defrosting solenoid valve 25, enters the low temperature or rapid evaporator 17, and first exchanges heat with the upstream line 17 of the evaporator 17 and its fins, and then flows in. The downstream line 172 of the evaporator 17 is replaced with the downstream line 172 and its fins. Because the south pressure temperature refrigerant is first exchanged with the upstream pipeline and its fins, the upstream pipeline 170 of the evaporator and the frost on the fins are removed first, and the upstream pipeline 170 is defrosted.聿§The upstream line 170 has been completely defrosted, and the refrigerant sensor 22 measures the temperature of the refrigerant in the middle section of the refrigerant passage 171 to be higher than the set temperature of the temperature sensor 22. Please refer to the second and fifth figures. As shown, the temperature switch 23 is actuated to make the fixed contact 231 of the temperature switch 23 and the first movable contact 232 non-conductive, and the fixed contact 231 of the temperature switch 23 and the second movable contact 233 are in conduction. The first defrosting solenoid valve 25 is not turned on because of no power supply, and the second defrosting solenoid valve 27 is turned on by the power source. The refrigerant passage of the second defrosting solenoid valve 27 is opened. 'Unblocking the passage of the refrigerant through the compressor 1 compresses the refrigerant into a high pressure, high temperature, and the gaseous refrigerant flows through the first conduit 24, and is blocked by the first defrosting solenoid valve 25, enters the second conduit 26, and passes through the second defrosting electromagnetic Valve 27' enters low temperature or haste The evaporator 17' and the evaporator 17 intermediate refrigerant passage Π1 and the downstream line 172 and their fins enter M405555, and the hot father replaces 'will & send H17 downstream line 172 and then remove the frost on it'. Π2 Defrost_1 is made; #All completed the defrosting work, the user only needs to put the switching frequency 21 in the tree operation position to resume the freezing operation. According to the above configuration, it can be understood that the first defrost electromagnetic 阙4 and cold are operated by the temperature sensor 22 provided in the middle portion of the evaporation passage 171, and the high pressure high temperature gaseous refrigerant is blocked by the east electromagnetic valve 15. Will flow through the first conduit %, enter the second conduit 26, through the second defrost electromagnetic, directly into the low temperature or rapid use of the evaporator 17 of the towel section cold riding path 171 and the next road 172 and then heat exchange I no longer make the heat of the 17th and the high temperature hot air refrigerant, and can make the high temperature refrigerant directly exchange heat with the downstream pipeline 1 and 2 and its Zhao to quickly defrost and improve Defrost scales are ideal for effectively addressing the above-mentioned shortcomings. Because the structure is unprecedented, it has a new brew, and
述構造，當可了解本創作之功效，為習用者所無，亦具有進步 =，且具有產業上價值，符合新型專利要件，尚祈賜新型 專利權為禱。 梢作可衫偏社要的精神及特徵下以其他刊的形玉 知，例如：依照上述技術及構造而於冷媒魏上再增加一浪 霜電磁間。因此，上述的較佳實施例只是以舉例㈣ =}1且残峨為本·關。本編範圍是由 “專：所界定，而非由說明書的内容所定義。甚者，屬 她圍之等效的變化或修改都是落於本創作的範圍。 9 【圖式簡單說明】 第-圖：係制之除霜構造之系統圖； 第二圖：係本創作除霜構造之系統圖； 圖係、本創作冷康運轉工作之電路圖； 第四圖：係本解上游管路除霜工作之, f路圖 > 五圖·係本創作下辭路除霜工作之電路圖 〇 【主要元件符號說明】 1冷凍裝置 11冷凍壓縮機 12 冷凝器 13貯液器 14熱交換器 15 冷凍電磁閥 151活動接點 152固定接點 16 膨脹閥 17蒸發器 no上游管路 171 中段冷媒通路 172下游管路 18第一冷媒通路 19 第二冷媒通路 2 除霜裝置 20電源 21 開關旋鈕 211第一活動接點 212第二活動接點 213 第一固定接點 214第二固定接點 22溫度感應器 23 溫度開關 231固定接點 232第一活動接點 233第二活動接點 24第一導管 241第一端 242 第二端 25第一除霜電磁閥 251活動接點 252 固定接點 26第二導管 261第一端 262 第二端 27第二除霜電磁閥 271活動接點 272 固定接點The structure, when you can understand the effect of this creation, is not for the practitioners, but also has progress =, and has industrial value, in line with the new patent requirements, is still praying for new patent rights. According to the above-mentioned techniques and structures, a wave of electromagnetic chambers is added to the refrigerant Wei in accordance with the above-mentioned techniques and structures. Therefore, the above-described preferred embodiment is only by way of example (4) =}1 and the wreckage is the key. The scope of this series is defined by “special: defined, not by the content of the specification. Even the equivalent changes or modifications that belong to her are within the scope of this creation. 9 [Simple description of the schema] No. Figure: System diagram of the defrosting structure of the system; The second picture: the system diagram of the defrosting structure of the creation; the circuit diagram of the operation of the creation of the cold-cold operation; The fourth picture: the defrosting of the upstream pipeline of the solution Work, f road map> Five maps · The circuit diagram of the defrosting work under this creation 〇 [Main component symbol description] 1 Freezer 11 Freezer compressor 12 Condenser 13 Reservoir 14 Heat exchanger 15 Refrigerated electromagnetic Valve 151 movable contact 152 fixed contact 16 expansion valve 17 evaporator no upstream line 171 middle section refrigerant passage 172 downstream line 18 first refrigerant passage 19 second refrigerant passage 2 defrosting device 20 power supply 21 switch knob 211 first activity Contact 212 second active contact 213 first fixed contact 214 second fixed contact 22 temperature sensor 23 temperature switch 231 fixed contact 232 first active contact 233 second active contact 24 first conduit 24 1 first end 242 second end 25 first defrost solenoid valve 251 movable contact 252 fixed contact 26 second duct 261 first end 262 second end 27 second defrost solenoid valve 271 movable contact 272 fixed contact