TW201837402A - Switching valve of refrigerant piping apparatus of refrigeration system including a body, a first drainage pipe, a second drainage pipe and an opening/closing pipe and capable of preventing refrigerant from leaking and external air from entering - Google Patents

Abstract

Disclosed is a switching valve of a refrigerant piping apparatus of a refrigeration system. The refrigerant piping apparatus includes a body surrounding a circulating space, a first drainage pipe, a second drainage pipe and an opening/closing pipe, which are formed on the body and communicated with the circulating space. The switching valve is suitable for being disposed on the opening/closing pipe, and includes a cocking member suitable for being screwed to the opening/closing pipe, a plurality of ring grooves formed apart at intervals at the cocking member, and a plurality of leakproof rings respectively disposed on the ring grooves. The cocking member is used to control whether a refrigerant may circulate between the first drainage pipe and the second drainage pipe. The leakproof rings are the same as the ring grooves in number and have flexibility, and the leakproof rings radially protrude out of the cocking member, whereupon when the cocking member is screwed into the opening/closing pipe, the leakproof rings may be matched with the cocking member to close the opening/closing pipe.

Description

冷凍系統之冷媒配管裝置的開關閥On-off valve of refrigerant piping device of refrigeration system

本發明是有關於一種冷媒輸送系統用的元件，特別是指一種冷凍系統之冷媒配管裝置的開關閥。The present invention relates to an element for a refrigerant conveying system, and more particularly to an on-off valve of a refrigerant piping device of a refrigeration system.

參閱圖1、2，一個冷凍系統包含一個主體單元1，及二個與該主體單元1相連通的冷媒配管裝置2。該主體單元1包括一個壓縮機11、一個與該壓縮機11相連通的冷凝器12、一個冷媒控制器13，及一個與該壓縮機11相連通的蒸發器14，且其中一個冷媒配管裝置2的一端與該冷凝器12相連通、另一端與該冷媒控制器13相連通，另一個冷媒配管裝置2的一端與該蒸發器14相連通、另一端與該壓縮機11相連通。每一個冷媒配管裝置2包括一個圍繞出一個流通空間211的本體21、形成於該本體21並且與該流通空間211相連通的一個第一引流管22、一個第二引流管23、一個充氣管24與一個啟閉管25，及一個設置於該啟閉管25的開關閥26。Referring to Figures 1 and 2, a refrigeration system includes a main unit 1 and two refrigerant piping devices 2 in communication with the main unit 1. The main unit 1 includes a compressor 11, a condenser 12 communicating with the compressor 11, a refrigerant controller 13, and an evaporator 14 in communication with the compressor 11, and one of the refrigerant piping devices 2 One end communicates with the condenser 12, and the other end communicates with the refrigerant controller 13, and the other refrigerant piping device 2 has one end communicating with the evaporator 14 and the other end communicating with the compressor 11. Each of the refrigerant piping devices 2 includes a body 21 surrounding a flow space 211, a first draft tube 22 formed in the body 21 and communicating with the flow space 211, a second draft tube 23, and an inflation tube 24. And an opening and closing pipe 25, and an opening and closing valve 26 provided in the opening and closing pipe 25.

當該冷凍系統運轉時，該壓縮機11可將氣態冷媒壓縮成高溫高壓的氣態冷媒，並輸入至該冷凝器12。接著冷媒將在該冷凝器12降低溫度，使高溫高壓的氣態冷媒轉變為低溫的液態冷媒，並經由該冷媒配管裝置2的第二引流管23、流通空間211、第一引流管22，進入該冷媒控制器13。該冷媒控制器13用以控制冷媒輸入至該蒸發器14的流量，當液態冷媒輸入至該蒸發器14後，將在該蒸發器14中吸熱，進而轉變為氣態冷媒，接著通過與該蒸發器14相連通之另一個冷媒配管裝置2的第一引流管22、流通空間211、第二引流管23，再次回到該壓縮機11中以進行下一個循環。由於在循環過程當中，冷媒有可能會外洩而變少，因此設置該充氣管24以填充減少的冷媒。When the refrigeration system is in operation, the compressor 11 can compress the gaseous refrigerant into a high temperature and high pressure gaseous refrigerant and input it to the condenser 12. Then, the refrigerant lowers the temperature in the condenser 12, converts the high-temperature high-pressure gaseous refrigerant into a low-temperature liquid refrigerant, and enters the second drainage tube 23, the circulation space 211, and the first drainage tube 22 of the refrigerant piping device 2 through the refrigerant. Refrigerant controller 13. The refrigerant controller 13 is configured to control the flow rate of the refrigerant input to the evaporator 14. After the liquid refrigerant is input to the evaporator 14, the heat is absorbed in the evaporator 14, and then converted into a gaseous refrigerant, and then passed through the evaporator. The first draft pipe 22, the flow space 211, and the second draft pipe 23 of the other refrigerant piping device 2, which is in communication with each other, are returned to the compressor 11 for the next cycle. Since the refrigerant may leak out during the circulation process, the inflation tube 24 is provided to fill the reduced refrigerant.

該等開關閥26用以控制相對應的第一引流管22與第二引流管23是否相連通，藉此控制冷媒是否能通過。每一個開關閥26具有一個螺接在相對應的啟閉管25的旋塞件261、一個形成於該旋塞件251並且呈環型的環槽262，及一個設置於該環槽262，並徑向凸出該旋塞件261，且具有撓性、彈性與擴張性的防漏環263。該旋塞件251可往該第二引流管23的方向螺入，藉此封閉該第二引流管23。如圖2所示，該旋塞件261尚未封閉該第二引流管23，於是液態冷媒可不受阻礙地流通於該第一引流管22與該第二引流管23間。如圖3所示，當螺入該旋塞件261，使得該旋塞件261靠抵於該第二引流管23，此時該旋塞件261將封閉該第二引流管23，於是冷媒將無法流通於該第一引流管22、該流通空間211與該第二引流管23間。The on-off valves 26 are used to control whether the corresponding first draft tube 22 and the second draft tube 23 are in communication, thereby controlling whether the refrigerant can pass. Each of the on-off valves 26 has a plug member 261 screwed to the corresponding opening and closing tube 25, a ring groove 262 formed in the ring member 251 and having a ring shape, and a ring groove 262 disposed in the ring groove 262. The cock 261 is protruded and has a flexible, elastic and expandable leakage preventing ring 263. The cocking member 251 can be screwed into the direction of the second draft tube 23, thereby closing the second draft tube 23. As shown in FIG. 2, the damper member 261 has not closed the second draft tube 23, so that the liquid refrigerant can flow unimpeded between the first draft tube 22 and the second draft tube 23. As shown in FIG. 3, when the cock member 261 is screwed into the damper member 261 against the second draft tube 23, the cocking member 261 will close the second draft tube 23, so that the refrigerant will not flow. The first draft tube 22 and the flow space 211 are spaced between the second draft tube 23.

由於該等旋塞件261僅是螺接於該等啟閉管25，且因該冷凍系統使用時屬於低溫狀態，故有熱脹冷縮的物理現象產生，於是冷媒很容易經由該等旋塞件261與該等啟閉管25的間隙逸散出去，或者使外部的空氣經由前述的間隙進入冷凍系統中，因此另需設置徑向凸出並具有撓性、彈性與擴張性的該等防漏環263以防止冷媒洩漏；利用分別與該等啟閉管25緊迫配合的該等防漏環263，就能大幅提高防漏的效果。然而，目前市售的每一個開關閥26僅使用一個防漏環263的防漏效果因冷媒的腐蝕、冷縮或防漏環的品質關係等因素，導致防漏效果仍然不佳，因此目前的防漏方式仍具有很大的改善空間。Since the faucet members 261 are only screwed to the opening and closing tubes 25, and the freezing system is in a low temperature state when used, a physical phenomenon of thermal expansion and contraction occurs, so that the refrigerant easily passes through the cocks 261. The gaps with the opening and closing tubes 25 are dissipated, or the outside air enters the freezing system via the gaps described above. Therefore, it is necessary to provide the leakage preventing rings which are radially convex and have flexibility, elasticity and expandability. 263 to prevent leakage of the refrigerant; and the leakage preventing ring 263 which is tightly fitted to the opening and closing tubes 25, respectively, can greatly improve the effect of preventing leakage. However, the leakage prevention effect of each of the currently used switching valves 26 using only one leakage preventing ring 263 is still poor due to factors such as corrosion of the refrigerant, cold shrinkage or the quality of the leakage preventing ring, and thus the current leakage prevention effect is still poor, so the current The leak-proof method still has a lot of room for improvement.

因此，本發明之目的，即在提供一種能更佳、更有效地防止冷媒洩漏以及外部空氣進入冷凍系統內的冷凍系統之冷媒配管裝置的開關閥。Accordingly, it is an object of the present invention to provide an on-off valve of a refrigerant piping device which is capable of more effectively and more effectively preventing refrigerant leakage and external air from entering a refrigeration system in a refrigeration system.

於是，本發明冷凍系統之冷媒配管裝置的開關閥，該冷媒配管裝置包含一個圍繞出一個流通空間的本體，形成於該本體並且與該流通空間相連通的一個第一引流管、一個第二引流管及一個啟閉管。Thus, the on-off valve of the refrigerant piping device of the refrigeration system of the present invention, the refrigerant piping device includes a body surrounding a flow space, a first drainage tube and a second drainage formed in the body and communicating with the circulation space Tube and an opening and closing tube.

該開關閥適用於設置在該啟閉管，並包含一個適用於螺接在該啟閉管的旋塞件、複數彼此相間隔地形成於該旋塞件的環槽，及複數分別設置於該等環槽的防漏環。The switch valve is adapted to be disposed on the opening and closing pipe, and includes a cocking member adapted to be screwed to the hoisting pipe, a plurality of ring grooves formed at intervals with respect to the cocking member, and a plurality of rings respectively disposed on the ring The leakproof ring of the slot.

該旋塞件可相對於該第二引流管在一個開放位置及一個封閉位置間移動。在該開放位置時，該旋塞件遠離該第二引流管，並且不位於該流通空間，此時將該旋塞件往該第二引流管的方向螺入，以逐漸往該封閉位置移動，同時逐漸地移入該流通空間。在該封閉位置時，該旋塞件靠抵於該第二引流管，而封閉該第一引流管與該第二引流管之流通。The cock member is movable relative to the second draft tube between an open position and a closed position. In the open position, the cock member is away from the second drainage tube and is not located in the circulation space. At this time, the cock member is screwed into the direction of the second drainage tube to gradually move toward the closed position, and gradually Move into the circulation space. In the closed position, the cock member abuts against the second draft tube to close the flow of the first draft tube and the second draft tube.

該等防漏環數量與該等環槽相同並具有撓性、彈性以及擴張性，同時該等防漏環是徑向凸出於該旋塞件，於是當該旋塞件螺入該啟閉管時，該等防漏環就能配合該旋塞件封閉該啟閉管。The number of the leakage preventing rings is the same as that of the annular grooves and has flexibility, elasticity and expandability, and the leakage preventing rings are radially protruded from the cocking member, so that when the cocking member is screwed into the opening and closing pipe The leakage preventing ring can close the opening and closing pipe with the cock.

本發明之功效在於：藉由該複數個環槽，搭配徑向凸出且同時具有撓性、彈性以及擴張性的該複數個防漏環，就能形成多層具有不同作用的防漏功能，以更佳、更有效地防止冷媒外洩，以及防止外部空氣進入冷凍系統。The utility model has the advantages that the plurality of annular grooves and the plurality of leakage preventing rings which are radially convex and at the same time have flexibility, elasticity and expandability can form a multi-layer leakage preventing function with different functions, Better and more effective in preventing the leakage of refrigerant and preventing outside air from entering the refrigeration system.

參閱圖4、5，本發明冷媒配管裝置3之開關閥4的一個實施例，該冷媒配管裝置3包含一個圍繞出一個流通空間311的本體31，形成於該本體31並且與該流通空間311相連通的一個第一引流管32、一個第二引流管33、一個啟閉管34及一個充氣管35。其中，該第一引流管32與該第二引流管33用以傳輸冷媒，且由於該第一引流管32、該第二引流管33、該啟閉管34與該充氣管35的相關應用已於先前技術中詳細揭露，故此處不再贅述。Referring to Figures 4 and 5, an embodiment of the on-off valve 4 of the refrigerant piping device 3 of the present invention includes a body 31 surrounding a flow space 311 formed in the body 31 and connected to the flow space 311. A first drainage tube 32, a second drainage tube 33, an opening and closing tube 34 and an inflation tube 35 are provided. The first drainage tube 32 and the second drainage tube 33 are used for conveying the refrigerant, and the related applications of the first drainage tube 32, the second drainage tube 33, the opening and closing tube 34 and the inflation tube 35 have been It is disclosed in detail in the prior art, and therefore will not be described again here.

該開關閥4適用於設置在該啟閉管34，並包含一個適用於螺接在該啟閉管34的旋塞件41、四個彼此相間隔地形成於該旋塞件41的環槽42，及四個分別設置於該等環槽42的防漏環43。該旋塞件41可相對於該第二引流管33在一個開放位置及一個封閉位置間移動，參閱圖5，在該開放位置時，該旋塞件41遠離該第二引流管33，並且不位於該流通空間311，此時將該旋塞件41往該第二引流管33的方向螺入，以逐漸往該封閉位置移動，同時逐漸地移入該流通空間311。參閱圖6，在該封閉位置時，該旋塞件41靠抵於該第二引流管33，於是封閉冷媒於該第一引流管32和該第二引流管33之流通。因此，藉由控制該旋塞件41在該開放位置或在該封閉位置，就能控制冷媒是否能於該第一引流管32與該第二引流管33之間流通。The switching valve 4 is adapted to be disposed on the opening and closing pipe 34, and includes a cocking member 41 adapted to be screwed to the opening and closing pipe 34, and four ring grooves 42 formed at intervals with respect to the cocking member 41, and Four leakage preventing rings 43 respectively disposed in the annular grooves 42 are provided. The cock 41 is movable relative to the second draft tube 33 between an open position and a closed position. Referring to FIG. 5, the cock 41 is away from the second drain 33 and not located in the open position. The circulation space 311 is screwed into the direction of the second drainage tube 33 at this time to gradually move toward the closed position while gradually moving into the circulation space 311. Referring to FIG. 6, in the closed position, the cock member 41 abuts against the second draft tube 33, thereby closing the circulation of the refrigerant in the first draft tube 32 and the second draft tube 33. Therefore, by controlling the cock 41 at the open position or the closed position, it is possible to control whether or not the refrigerant can flow between the first draft tube 32 and the second draft tube 33.

如圖4、5所示，該等防漏環43皆具有撓性、彈性與擴張性，且在該旋塞件41螺入該啟閉管之前，該等防漏環43是徑向凸出於該旋塞件41。於是當該旋塞件41螺入該啟閉管34時，該等防漏環43就能緊迫地貼合於該啟閉管34，並分別配合該旋塞件41以多層阻隔的方式封閉該啟閉管34，因此該實施例就能較傳統的開關閥4更有效地防止冷媒外洩，以及外部空氣流入該冷凍系統。要特別說明的是，在該實施例中，該等環槽42與該等防漏環43的數量雖然為四，但不以此為限，數量可為二以上，皆能達成本發明的功效。As shown in FIGS. 4 and 5, the leakage preventing rings 43 have flexibility, elasticity and expandability, and the leakage preventing ring 43 is radially protruded before the cocking member 41 is screwed into the opening and closing tube. The cock 41 is. Therefore, when the cocking member 41 is screwed into the opening and closing tube 34, the leakage preventing ring 43 can be tightly attached to the opening and closing tube 34, and the cocking member 41 is respectively coupled to the cocking member 41 to close the opening and closing in a plurality of layers. The tube 34, therefore, allows the embodiment to more effectively prevent leakage of refrigerant than the conventional on-off valve 4, as well as external air flowing into the refrigeration system. It should be particularly noted that, in this embodiment, although the number of the annular grooves 42 and the leakage preventing rings 43 is four, but not limited thereto, the number may be two or more, and the effect of the present invention can be achieved. .

為了能適用在各種不同的環境與條件，該等防漏環43的材料有多種選擇，例如丁腈橡膠(NBR)、氟化橡膠(Viton)、乙烯丙烯橡膠(EPDM)以及矽膠(Silicon)都是很常見的選擇。前述的四種材料皆具有其獨特的物性，例如NBR耐磨、耐油、耐非極性溶液、耐冷媒有機腐蝕性溶劑，Viton耐化學性腐蝕、耐磨、耐油、耐有機溶劑，EPDM耐超高低溫、耐超高溫差、耐有機溶劑，而Silicon同樣有耐超高低溫、耐超高溫差、耐有機溶劑的特性，但表現比EPDM更佳。In order to be applicable to various environments and conditions, the materials of the leakage preventing ring 43 are various, such as nitrile rubber (NBR), fluorinated rubber (Viton), ethylene propylene rubber (EPDM), and silicone (Silicon). It is a very common choice. All of the above four materials have their unique physical properties, such as NBR wear resistance, oil resistance, non-polar solution, refrigerant resistant organic corrosive solvent, Viton chemical corrosion resistance, wear resistance, oil resistance, organic solvent resistance, EPDM resistance Low temperature, high temperature resistance and organic solvent resistance, and Silicon also has the characteristics of ultra high temperature resistance, ultra high temperature resistance and organic solvent resistance, but the performance is better than EPDM.

藉由該實施例具有多個防漏環43的特色，就能配合不同的環境或條件，加以選擇不同的材料與排列順序，使防漏性能更進一步地提升。例如，考慮冷媒可能選自非極性溶液，因此將最靠近該第二引流管33，也就是最靠近冷媒的防漏環43選擇為NBR材料，以最大地利用NBR耐非極性溶液的特性來做為第一層的防漏。而第二個靠近該第二引流管33的防漏環43，則是選擇耐化學性腐蝕的VITION做為第二層的防漏，如此一來，當使用具有化學腐蝕性的冷媒時，就不需擔心該等防漏環43全部都被侵蝕而出現隙縫，進而導致冷媒洩漏，以及外部空氣進入該冷凍系統。接著最遠離該第二引流管33的另外二個防漏環43，可依照與該第二引流管33的距離，由近而遠選擇EPDM材料做為第三層防漏，選擇矽膠材料做為第四層防漏，以適應超高溫的氣態冷媒以及超低溫的液態冷媒。透過EPDM與矽膠的特性，避免高溫、低溫或高溫差導致冷媒外洩，以及外部空氣進入該冷凍系統。舉例來說，當超低溫的液態冷媒(-70~-90°C)通過該實施例時，就會使得該啟閉管34與該旋塞件41發生劇烈冷縮效應，使原本就可能存在的間隙變得更大，然而選用具有撓性且耐低溫的EPDM與Silicon並不會因為超低溫而產生變化，因此仍然能良好地封閉該啟閉管34。By adopting the feature of the plurality of anti-leakage rings 43 in this embodiment, different materials and conditions can be selected according to different environments or conditions, so that the leakage prevention performance is further improved. For example, consider that the refrigerant may be selected from a non-polar solution, so the leak-proof ring 43 closest to the second draft tube 33, that is, closest to the refrigerant, is selected as the NBR material to maximize the utilization of the NBR-resistant non-polar solution. For the first layer of leak prevention. The second leakage preventing ring 43 adjacent to the second draft tube 33 is selected to be chemically resistant VITION as a second layer of leakage prevention, so when a chemically corrosive refrigerant is used, There is no need to worry that the leak-proof rings 43 are all eroded and cracks occur, which in turn causes refrigerant leakage and external air to enter the refrigeration system. Then, the other two leakage preventing rings 43 which are farthest from the second drainage tube 33 can select the EPDM material as the third layer to prevent leakage according to the distance from the second drainage tube 33, and select the silicone material as the material. The fourth layer is leakproof to accommodate ultra-high temperature gaseous refrigerants and ultra-low temperature liquid refrigerants. Through the characteristics of EPDM and silicone, avoiding the leakage of refrigerant due to high temperature, low temperature or high temperature difference, and the outside air entering the refrigeration system. For example, when the ultra-low temperature liquid refrigerant (-70 to -90 ° C) passes through this embodiment, the cold-shrinking effect of the opening and closing tube 34 and the faucet member 41 is caused, so that the gap which may exist may exist. It becomes larger, but the EPDM and Silicon which are flexible and resistant to low temperatures are not changed by ultra-low temperature, so the opening and closing pipe 34 can still be well sealed.

於是，該實施例不但有多層防漏的效果，且利用不同材料的排列順序，還能融合各種材料的優點，達到互補的效果，以更進一步地防止冷媒外洩，以及外部空氣進入該冷凍系統。實際使用時，若採用上述的排列順序，經測試在-90°C~180°C的環境下，仍可有效地防止冷媒外洩，以及外部空氣進入該冷凍系統。需特別說明的是，此處所揭露的排列順序僅是其中一個選項，當然依照各種不同的考量可衍伸出不同的排列方式，甚至選擇其他的材料，並不以此為限。Therefore, this embodiment not only has the effect of multiple layers of leakage prevention, but also utilizes the order of different materials, and can also combine the advantages of various materials to achieve complementary effects, to further prevent leakage of refrigerant, and external air entering the refrigeration system. . In actual use, if the above-mentioned arrangement order is adopted, it can be effectively prevented from leaking out of the refrigerant and external air entering the refrigeration system after being tested in an environment of -90 ° C to 180 ° C. It should be noted that the order of arrangement disclosed herein is only one of the options. Of course, different arrangements may be used according to various considerations, and even other materials may be selected.

綜上所述，本發明冷媒配管裝置3之開關閥4，藉由該複數個環槽42，搭配徑向凸出且同時具有撓性、彈性以及擴張性的該複數個防漏環43，就能形成多層的防漏，以更佳地防止冷媒外洩，以及外部空氣進入該冷凍系統，故確實能達成本發明之目的。此外，還可以將該等防漏環43選擇為不同的材料並依需求排列為不同的順序，以更加強化防漏的效果。In summary, the switching valve 4 of the refrigerant piping device 3 of the present invention, by the plurality of annular grooves 42, is matched with the plurality of leakage preventing rings 43 which are radially convex and have flexibility, elasticity and expandability at the same time. It is possible to form a multi-layered leakproof, to better prevent leakage of refrigerant, and to allow outside air to enter the refrigeration system, so that the object of the present invention can be achieved. In addition, the leakage preventing rings 43 can be selected as different materials and arranged in different orders according to requirements to further enhance the leakage preventing effect.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

31‧‧‧本體31‧‧‧Ontology

311‧‧‧流通空間311‧‧‧Circulation space

32‧‧‧第一引流管32‧‧‧First drainage tube

33‧‧‧第二引流管33‧‧‧Second drain tube

34‧‧‧啟閉管34‧‧‧Opening tube

35‧‧‧充氣管35‧‧‧Inflatable tube

4‧‧‧開關閥4‧‧‧ switch valve

41‧‧‧旋塞件41‧‧‧ cocking pieces

42‧‧‧環槽42‧‧‧ Ring groove

43‧‧‧防漏環43‧‧‧ leakproof ring

本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是一個冷凍系統的示意圖； 圖2是一個剖視圖，說明一個傳統的開關閥； 圖3是一個剖視圖，說明利用該傳統的開關閥以封閉冷媒的輸出； 圖4是一個立體分解圖，說明本發明冷凍系統之冷媒配管裝置的開關閥的一個實施例； 圖5是一個剖視圖，說明該實施例的一個旋塞件在一個開放位置；及 圖6是一個剖視圖，說明該旋塞件在一個封閉位置。Other features and advantages of the present invention will be apparent from the description of the drawings, wherein: Figure 1 is a schematic diagram of a refrigeration system; Figure 2 is a cross-sectional view showing a conventional on-off valve; Figure 3 is a BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is an exploded perspective view showing an embodiment of an on-off valve of a refrigerant piping device of a refrigeration system of the present invention; FIG. 5 is a cross-sectional view showing the embodiment. One cock member is in an open position; and Figure 6 is a cross-sectional view showing the cock member in a closed position.

Claims (5)

一種冷凍系統之冷媒配管裝置的開關閥，該冷媒配管裝置包含一個圍繞出一個流通空間的本體，形成於該本體並且與該流通空間相連通的一個第一引流管、一個第二引流管及一個啟閉管，該開關閥適用於設置在該啟閉管，並包含： 一個旋塞件，適用於螺接在該啟閉管，並可相對於該第二引流管在一個開放位置及一個封閉位置間移動，在該開放位置時，該旋塞件遠離該第二引流管，並且不位於該流通空間，此時將該旋塞件往該第二引流管的方向螺入，以逐漸往該封閉位置移動，同時逐漸地移入該流通空間，在該封閉位置時，該旋塞件封閉該第二引流管； 複數環槽，彼此相間隔地形成於該旋塞件；及 複數防漏環，數量與該等環槽相同並具有撓性、彈性以及擴張性，該等防漏環分別設置於該等環槽，並且徑向凸出於該旋塞件，當該旋塞件螺入該啟閉管時，該等防漏環配合該旋塞件封閉該啟閉管。An on-off valve of a refrigerant piping device of a refrigeration system, the refrigerant piping device comprising a body surrounding a circulation space, a first drainage tube, a second drainage tube and a body formed in the body and communicating with the circulation space An opening and closing pipe, the switching valve is adapted to be disposed on the opening and closing pipe, and comprises: a cocking member adapted to be screwed to the opening and closing pipe, and being in an open position and a closed position relative to the second drafting pipe Moving in the open position, the cock member is away from the second drainage tube and is not located in the circulation space, and the cock member is screwed into the second drainage tube to gradually move toward the closed position. At the same time, gradually moving into the circulation space, in the closed position, the cocking member closes the second drainage tube; a plurality of annular grooves are formed at intervals with each other on the faucet member; and a plurality of leakage preventing rings, the number and the rings The slots are identical and have flexibility, elasticity and expandability, and the leakage preventing rings are respectively disposed in the ring grooves, and protrude radially from the cock member, and when the cock member is screwed into the opening and closing tube , Such that the seal ring with the closure member open and close the cock pipe. 如請求項1所述的冷凍系統之冷媒配管裝置的開關閥，其中，其中一個防漏環與另外一個防漏環是選自不同的材料。The on-off valve of the refrigerant piping device of the refrigeration system according to claim 1, wherein one of the leakage preventing rings and the other leakage preventing ring are selected from different materials. 如請求項1所述的冷媒配管之開關閥，其中，該等個防漏環的材料是選自NBR、Viton、EPDM以及Silicon所組成的群組。The on-off valve of the refrigerant piping according to claim 1, wherein the materials of the leakage preventing rings are selected from the group consisting of NBR, Viton, EPDM, and Silicon. 如請求項3所述的冷凍系統之冷媒配管裝置的開關閥，包含該等環槽及該等防漏環的數量為四。The on-off valve of the refrigerant piping device of the refrigeration system according to claim 3, wherein the number of the annular grooves and the number of the leakage preventing rings is four. 如請求項4所述的冷凍系統之冷媒配管裝置的開關閥，其中，該四個防漏環的材料依照與該第二引流管的距離由近而遠依序為NBR、Viton、EPDM以及Silicon。The on-off valve of the refrigerant piping device of the refrigeration system according to claim 4, wherein the materials of the four leakage preventing rings are closely spaced according to the distance from the second drainage tube to NBR, Viton, EPDM, and Silicon. .