1379979 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種兩段式冷媒處理系統及方法，更詳 而言之，係有關一種對冷媒進行兩段膨胺處理之兩段式冷 媒處理系統及方法。 【先前技術】 按，變頻多聯式空調（VRF, Variable Refrigerant Flow)，如一對多空調機，是由一台或多台室外機與多台室 内機組合而成，因為其採用分流管並結合變頻控制和電子 膨脹閥來達成冷媒流量的分配，亦即，具有依需求開啟的 室内機的機台數量，決定壓縮機轉速來提供空調機需求的 冷媒流量的優點，不但達成小體積具大冷房容量變化範圍 的壓縮機特性（可以實現區域控制），又不會有用電過浪費 的情形（提高節能效果），因此，變頻多聯式空調已被廣泛 的應用於較大坪數住宅或中小型商用建築的空調系統中。 現今的一對多空調機，每台室内機皆有一進一出的管 路以傳送冷媒，因此，連接室外機的管路數量為室内機機 台數量的兩倍，進而使得配管太多’管路太長。而傳統一 對多空調機，膨脹閥設於室外機，亦即·冷凝器的出口，冷 媒出了膨脹閥後，變為低壓氣態，低壓氣態的冷媒必需從 室外機傳送至室内機，由於室外機至室内機的管路太長， 且冷媒又處於氣態（氣態冷媒的壓損遠遠超過液態冷媒甚 多），致使空調機的性能係數（Coefficient oi Performance) 甚差。 ])]4]〇 1379979 因此，如何提供一種可避免由於室外機至室内機的管 路太長而導致冷媒的壓損過甚的冷媒處理系統及方法 > 實 為業界亟待解決之問題。 【發明内容】 鑒於上述習知技術之缺點，本發明提供一種對冷媒進 行兩段膨脹處理之兩段式冷媒處理系統及方法，藉以避免 由於室外機至室内機的管路太長而導致冷媒的壓損過甚， 進而可提高空調機的性能係數。1379979 VI. Description of the Invention: [Technical Field] The present invention relates to a two-stage refrigerant treatment system and method, and more particularly to a two-stage refrigerant treatment for two-stage extended amine treatment of a refrigerant System and method. [Prior Art] According to the VRF (Variable Refrigerant Flow), such as a one-to-many air conditioner, one or more outdoor units are combined with a plurality of indoor units because they are combined with a shunt tube. Variable frequency control and electronic expansion valve to achieve the distribution of refrigerant flow, that is, the number of machines with indoor units that are opened according to demand, determine the speed of the compressor to provide the refrigerant flow demand of the air conditioner, not only to achieve a small size with a large cold room The characteristics of the compressor in the range of capacity change (can achieve regional control), and there is no need to use electricity and waste (enhance the energy saving effect). Therefore, the variable frequency multi-connected air conditioner has been widely used in large flat houses or small and medium-sized houses. In the air conditioning system of commercial buildings. In today's one-to-many air conditioners, each indoor unit has an in-and-out line to transfer refrigerant. Therefore, the number of pipes connected to the outdoor unit is twice that of the indoor unit, which makes the piping too much. Too long. In the conventional one-to-many air conditioner, the expansion valve is installed in the outdoor unit, that is, the outlet of the condenser. After the refrigerant exits the expansion valve, it becomes a low-pressure gas state, and the low-pressure gaseous refrigerant must be transferred from the outdoor unit to the indoor unit, due to the outdoor The pipeline from the machine to the indoor unit is too long, and the refrigerant is in a gaseous state (the pressure loss of the gaseous refrigerant far exceeds that of the liquid refrigerant), resulting in a poor coefficient of performance (Coefficient oi Performance). ])]4]〇 1379979 Therefore, how to provide a refrigerant treatment system and method that can prevent the pressure loss of the refrigerant from being excessively long due to the long distance between the outdoor unit and the indoor unit is an urgent problem to be solved in the industry. SUMMARY OF THE INVENTION In view of the above disadvantages of the prior art, the present invention provides a two-stage refrigerant treatment system and method for performing two-stage expansion treatment of a refrigerant, so as to avoid the refrigerant being caused by the pipeline of the outdoor unit to the indoor unit being too long. The pressure loss is excessive, and the coefficient of performance of the air conditioner can be improved.
再者，本發明提供一種對冷媒進行兩段膨脹處理之兩 段式冷媒處理系統及方法，藉以增加室外機的過冷度，提 高空調機的性能係數。 本發明所提供之兩段式冷媒處理系統，係應用於具有 室外機及室内機的空調機中，該兩段式冷媒處理系統包 括：第一電子膨脹閥，係設置於該室外機的機體内出口； 過冷度熱交換器，係設置於該室外機的機體内出口，且配 |設有第二電子膨脹閥；分配器，係設置於該室外機的出口， 且配設有第三電子膨脹閥；其中，當該空調機處於冷氣模 式時，該第一電子膨脹閥係為全開狀態，以供該空調機之 冷媒通過，接著透過該過冷度熱交換器的第二電子膨脹閥 對該冷媒進行第一次膨脹處理獲得所需的過冷度值，使該 冷媒處於高壓液態，再透過該分配器的第三電子膨脹閥進 行第二次膨脹處理，以使該冷媒處於低壓氣態，並進入該 室内機，且依照該室内機的需求獲得最佳的冷媒流量；當 該空調機處於暖氣模式時，該分配器的第三電子膨脹閥係 11]4]〇 1379979 為全開狀態，藉以作為該空調機之冷媒之第一次膨脹處 理，使該冷媒處於高壓液態並供該冷媒通過，此時，該過 冷度熱交換器的第二電子膨脹閥係為全關狀態以及依據室 外溫度的高低調整適用的值，並透過該第一電子膨脹閥對 該冷媒進行第二次膨脹處理，使該冷媒處於低壓氣態，並 進入該室外機。 於本發明之較佳實施例中，該第一電子膨脹閥之第一 端係連接該室外機的出口，該第一電子膨脹閥之第二端係 連接該過冷度熱交換器之第一端，該過冷度熱交換器之第 二端係連接該第二電子膨脹閥之第一端，該第二電子膨脹 閥之第二端係連接該分配器的第三電子膨脹閥之第一端， 該分配器的第三電子膨脹閥之第二端係連接該室内機的入 口；該過冷度熱交換器為雙套管型式；該分配器復配設有 旁通閥，以調節該冷媒流量；該分配器的數量及/或該分配 器的第三電子膨脹閥的數量係與該室内機的數量相對應； 該室外機至該分配器具有第一段及第二段管路，該第一段 管路為與該室外機連接且内徑大的主幹管，該第二段管路 為與該分配器連接的分岐管後幹管。 本發明所提供之兩段式冷媒處理方法，係應用於具有 室外機及室内機的空調機中，該兩段式冷媒處理方法包括 以下步驟：於該室外機的機體内出口設置第一電子膨脹閥 及配設有第二電子膨Μ閥之過冷度熱交換器，並設置配備 有第三電子膨脹閥之分配器於該室外機的出口（該室外機 與該室内機之間的適當位置）；以及當該空調機處於冷氣模 1Π430 1 1379979 * _ ' 式時，令該第一電子膨脹閥為全開狀態，以供該空調機之 冷媒通過，接著透過該過冷度熱交換器的第二電子膨脹閥 •對該冷媒進行第一次膨脹處理，以使該冷媒處於高壓液 ' 態，再透過該分配器的第三電子膨脹闊進行-第二次膨脹處 理，以使該冷媒處於低壓氣態，並進入該室内機；當該空 調機處於暖氣模式时，令該分配器的第三電子膨服閥為全 開狀態，以作為該空調機之冷媒之第一次膨脹處理，使該 冷媒處於高壓液態並供該冷媒通過，同時，令該過冷度熱 f 交換器的第二電子膨脹閥為全關狀態以及依據室外溫度的 高低調整適用的值，以透過該第一電子膨脹閥對該冷媒進 行第二次膨脹處理，使該冷媒處於低壓氣態，並進入該室 外機。 於本發明之較佳實施例中，該第一電子膨脹閥之第一 端係連接該室外機冷凝器的出口，該第一電子膨脹閥之第 二端係連接該過冷度熱交換器之第一端，該過冷度熱交換 0器之第二端係連接該第二電子膨脹閥之第一端，該第二電 子膨脹閥之第二端係連接該分配器的第三電子膨脹閥之第 一端，該分配器的第三電子膨脹閥之第二端係連接該室内 機的入口；該過冷度熱交換器為雙套管型式；該分配器復 配設有旁通閥，以調節該冷媒流量；該分配器的數量及/ 或該分配器的第三電子膨脹閥的數量係與該室内機的數量 相對應；該室外機至該分配器具有第一段及第二段管路， 該第一段管路為與該室外機連接且内徑大的主幹管=該第 二段管路為與該分配器連接的分岐管後幹管。 ]]1430 1379979 综上所述，本發明所揭示之兩段式冷媒處理系統及方 法，主要係對冷媒進行兩段膨脹處理，其中，經第一次膨 脹處理後，會使冷媒於室外機至室内機中路徑較長的主幹 管内處於高壓液態，再經第二次膨脹處理後，使該冷媒處 於低壓氣態，再進入室内機或室外機，藉此避免習知技術 中由於室外機至室内機的管路太長而導致氣態冷媒的壓損 過甚，進而可提高空調機的性能係數，此外，冷媒進入本 發明之雙套管型式之過冷度熱交換器的第二電子膨脹閥， 一部分的冷媒溫度會降低，藉由降低溫的冷媒回流雙套管 型式之過冷度熱交換器的管側，可與内管的主迴路冷媒進 行熱交換，進而降低主迴路冷媒的溫度，因此，可增加室 外機的過冷度，提高空調機的性能係數。 【貫施方式】 以下係藉由特定的具體實例說明本發明之實施方 式，熟悉此技藝之人士可由本說明書所揭示之内容輕易地 瞭解本發明之其他優點與功效。 請參閱第1圖，係為本發明之兩段式冷媒處理系統30 之系統示意圖。如圖所示，本發明之兩段式冷媒處理系統 30係應用於具有室外機10及室内機20的空調機中，圖中 係以一個室外機10對四個室内機20的空調機為例進行說 明，但並非用以限制本發明之兩段式冷媒處理系統30可應 用的空調機的型式，僅侷限於圖示實施例。該兩段式冷媒 處理系統30包括：第一電子膨脹閥300、過冷度熱交換器 310以及分配器330。以下即分別對本發明之兩段式冷媒處 1Π410 1379979 然，該分配器3 3 0及該第三電子膨脹閥3 4 0僅作為說明範 例，並非用以限制本發明之分配器330及該第三電子膨脹 閥340實施時的數量，實際實施時，可依據需求或規格要 求進行調整。 於本發明之兩段式冷媒處理系統30的實施例中，該 室外機10至該分配器330具有兩段管路（第一段及第二段 管路Α及Β)，該第一段管路Α為與該室外機10連接且内 徑大的主幹管，該第二段管路B為與該分配器330連接的 分岐管後幹管。 承上，當該空調機處於冷氣模式時，該第一電子膨服 閥300係為全開狀態，以供該空調機之冷媒通過（避免因阻 擋冷媒流動而增加壓損），接續冷媒會流至該過冷度熱交換 器310,透過該過冷度熱交換器310的第二電子膨脹閥320 對該冷媒進行第一次膨脹處理，以使該冷媒處於高壓液態 並運行於該主幹管中直至分流至該分岐管後幹管後進入該 分配器330，再透過該分配器330的第三電子膨脹閥340 對該高壓液態的冷媒進行第二次膨脹處理，以精碡控制每 台室内機20的冷媒流量，並使該冷媒處由高壓液態轉變為 低壓氣態，且進入該室内機20，以進行冷氣模式的運轉。 由上可知，從室外機10出口一直到該分配器3 3 0的 路徑中，具有主幹管模式，該主幹管管路内徑大，且由於 冷媒為高壓液態模式，故可大幅降低管内的壓損，氣態冷 媒流經的管路只有從該分配器3 3 0到該室内機2 0，管路較 短，可將氣態冷媒的壓損降至最低，藉此增加空調機的性 ]〇 111410 1379979 能係數（系統性能）。此外，該過冷度熱交換器310的第二 電子膨脹閥320做第一段膨脹時，由於該過冷度熱交換器 • 310為雙套管型式（冷媒由内管進入，由外殼流出），冷媒 ' 進入内管的主迴路時處於高壓高溫，經過該過冷度熱交換 器310的第二電子膨脹閥320後，一部份冷媒溫度會降低， 此溫度降低的部份冷媒會回流至該過冷熱交換器的管側， . 與内管的主迴路冷媒做熱交換，因此，主迴路的冷媒溫度 會降低，進而增加室外機10的過冷度，藉以提升空調機的 #性能係數（Hit能）。 反之，當該空調機處於暖氣模式時，該分配器330的 第三電子膨脹閥340係為全開狀態，以作為該空調機之冷 媒之第一次膨脹處理，此時該冷媒處於高壓液態並自該分 岐管後幹管流至該主幹管直至該過冷度熱交換器310，而 由於該過冷度熱交換器310的第二電子膨脹閥320係為全 關狀態，故透過該第一電子膨脹閥300對該冷媒進行第二 0次膨脹處理，以使該冷媒由高壓液態轉變為低壓氣態，並 進入該室外機10，以進行暖氣模式的運轉，由上可知，從 該分配器330到該室外機10的路徑中，具有主幹管模式， 由於該主幹管管路内徑大，且通過的冷媒為高壓液態，故 壓損最低。而氣態冷媒只有從該第一膨脹閥到室外機.10 這一段，管路最短，壓損最低，藉此增加空調機的性能係 數（系統性能）。 需說明的是，本發明之兩段式冷媒處理系統30中的 第一電子膨脹閥300、過冷度熱交換器310及第二電子膨 13 川4)0 1379979 脹閥320於實施時可如本實施例中以分離方式設置或整合 於室外機10内。 再請同時參閱第2圖，係為本發明之兩段式冷媒處理 方法之流程示意圖。如上述本發明之兩段式冷媒處理系統 30,本發明之兩段式冷媒處理方法係應用於具有室外機10 及室内機20的空調機中。該兩段式冷媒處理方法先執行步 驟 S10。 於該步驟S10,係設置第一電子膨脹閥300、配設有 第二電子膨脹閥320之過冷度熱交換器310於該室外機10 的出口，並設置配設有第三電子膨脹閥340之分配器330 於該室外機10的入口，接續分別依據空調模式進入步驟 S11 或 S12。. 於該步驟S11，當該空調機處於冷氣模式時，令該第 一電子膨脹閥300為全開狀態，以供該空調機之冷媒通 過，接續透過該過冷度熱交換器310的第二電子膨脹閥320 對該冷媒進行第一次膨脹處理，以使該冷媒處於高壓液 態，再透過該分配器330的第三電子膨脹閥340進行第二 次膨脹處理，以使該冷媒處於低壓氣態，並進入該室内機 20，以進行冷氣模式的運轉。 於該步驟S12，當該空調機處於暖氣模式時，令該分 配器330的第三電子膨脹閥340為全開狀態，以作為該空 調機之冷媒之第一次膨脹處理，使該冷媒處於高壓液態並 供該冷媒通過，同時，令該過冷度熱交換器310的第二電 子膨脹閥320為全關狀態，以透過該第一電子膨脹間300 12 111410 1379979 對該冷媒進行第二次膨脹處理，使該冷媒處於低壓氣態， 並進入該室外機10，以進行暖氣模式的運轉。 需說明的是，本發明之兩段式冷媒處理方法中的姐件 及組件間的連結等具體實際方式係如同上述本發明之兩段 式冷媒處理系統30，於此不再予以贅述。Furthermore, the present invention provides a two-stage refrigerant treatment system and method for two-stage expansion treatment of a refrigerant, thereby increasing the degree of subcooling of the outdoor unit and improving the coefficient of performance of the air conditioner. The two-stage refrigerant processing system provided by the present invention is applied to an air conditioner having an outdoor unit and an indoor unit. The two-stage refrigerant processing system includes: a first electronic expansion valve disposed in the body of the outdoor unit The outlet; the subcooling heat exchanger is disposed at the outlet of the outdoor unit of the outdoor unit, and is provided with a second electronic expansion valve; the distributor is disposed at the outlet of the outdoor unit, and is equipped with a third electron An expansion valve; wherein, when the air conditioner is in a cool air mode, the first electronic expansion valve is in a fully open state for the refrigerant of the air conditioner to pass, and then the second electronic expansion valve pair of the subcooling heat exchanger The refrigerant is subjected to a first expansion treatment to obtain a required degree of subcooling, the refrigerant is placed in a high pressure liquid state, and then passed through a third electronic expansion valve of the distributor for a second expansion treatment, so that the refrigerant is in a low pressure gaseous state. And entering the indoor unit, and obtaining the optimal refrigerant flow according to the demand of the indoor unit; when the air conditioner is in the heating mode, the third electronic expansion valve of the distributor is 11] 4] 〇 1379979 In the fully open state, the first expansion process of the refrigerant of the air conditioner is used to make the refrigerant in a high pressure liquid state and the refrigerant is passed through. At this time, the second electronic expansion valve of the subcooling heat exchanger is fully closed. The state and the applicable value are adjusted according to the height of the outdoor temperature, and the refrigerant is subjected to the second expansion treatment through the first electronic expansion valve to bring the refrigerant into a low-pressure gas state and enter the outdoor unit. In a preferred embodiment of the present invention, the first end of the first electronic expansion valve is connected to the outlet of the outdoor unit, and the second end of the first electronic expansion valve is connected to the first of the subcooling heat exchangers. The second end of the subcooling heat exchanger is connected to the first end of the second electronic expansion valve, and the second end of the second electronic expansion valve is connected to the first electronic expansion valve of the distributor. The second end of the third electronic expansion valve of the distributor is connected to the inlet of the indoor unit; the subcooling heat exchanger is of a double casing type; the distributor is provided with a bypass valve to adjust the refrigerant a flow rate; the number of the dispensers and/or the number of third electronic expansion valves of the dispenser corresponding to the number of the indoor units; the outdoor unit to the dispenser having a first section and a second length of tubing, The first section of the pipeline is a trunk pipe connected to the outdoor unit and having a large inner diameter, and the second section of the pipeline is a branching trunk of the branching pipe connected to the distributor. The two-stage refrigerant processing method provided by the present invention is applied to an air conditioner having an outdoor unit and an indoor unit. The two-stage refrigerant processing method includes the following steps: setting a first electronic expansion at an outlet of the outdoor unit a valve and a subcooling heat exchanger equipped with a second electronic expansion valve, and a distributor equipped with a third electronic expansion valve at an outlet of the outdoor unit (the appropriate position between the outdoor unit and the indoor unit) And when the air conditioner is in the cold air mode 1 Π 430 1 1379979 * _ ', the first electronic expansion valve is in a fully open state for the refrigerant of the air conditioner to pass, and then the first through the subcooling heat exchanger a two-electron expansion valve, the first expansion treatment of the refrigerant, so that the refrigerant is in a high-pressure liquid state, and then through the third electronic expansion of the distributor, a second expansion treatment, so that the refrigerant is at a low pressure Gaseous, and enter the indoor unit; when the air conditioner is in the heating mode, the third electronic expansion valve of the dispenser is fully open, as the first expansion treatment of the refrigerant of the air conditioner The refrigerant is placed in a high-pressure liquid state and passed through the refrigerant. At the same time, the second electronic expansion valve of the subcooling heat exchanger is in a fully closed state and the applicable value is adjusted according to the height of the outdoor temperature to transmit the first value. The electronic expansion valve performs a second expansion treatment on the refrigerant to bring the refrigerant into a low-pressure gas state and enter the outdoor unit. In a preferred embodiment of the present invention, the first end of the first electronic expansion valve is connected to the outlet of the outdoor unit condenser, and the second end of the first electronic expansion valve is connected to the subcooling heat exchanger. a first end, the second end of the subcooling heat exchange device is connected to the first end of the second electronic expansion valve, and the second end of the second electronic expansion valve is connected to the third electronic expansion valve of the distributor a first end of the third electronic expansion valve of the distributor is connected to the inlet of the indoor unit; the subcooling heat exchanger is of a double casing type; the distributor is provided with a bypass valve Adjusting the flow rate of the refrigerant; the number of the distributors and/or the number of the third electronic expansion valves of the distributor corresponds to the number of the indoor units; the outdoor unit to the distributor has a first section and a second section of tubes The first section of the pipeline is a trunk pipe connected to the outdoor unit and having a large inner diameter. The second section of the pipeline is a branching trunk of the branching pipe connected to the distributor. ]] 1430 1379979 In summary, the two-stage refrigerant treatment system and method disclosed by the present invention mainly performs two-stage expansion treatment on a refrigerant, wherein after the first expansion treatment, the refrigerant is placed on the outdoor unit to The main pipe in the indoor unit is in a high-pressure liquid state, and after the second expansion treatment, the refrigerant is in a low-pressure gas state, and then enters the indoor unit or the outdoor unit, thereby avoiding the outdoor unit to the indoor unit in the prior art. The pipeline is too long to cause pressure loss of the gaseous refrigerant, thereby improving the performance coefficient of the air conditioner, and further, the refrigerant enters the second electronic expansion valve of the double-casing type subcooling heat exchanger of the present invention, part of The temperature of the refrigerant is lowered, and by lowering the temperature of the refrigerant, the tube side of the double-casing type supercooling heat exchanger can exchange heat with the main circuit refrigerant of the inner tube, thereby reducing the temperature of the main circuit refrigerant, and thus, Increase the degree of subcooling of the outdoor unit and increase the coefficient of performance of the air conditioner. [Brief Description of the Invention] The embodiments of the present invention are described below by way of specific examples, and those skilled in the art can readily appreciate the other advantages and effects of the present invention from the disclosure herein. Please refer to FIG. 1 , which is a schematic diagram of a system of a two-stage refrigerant processing system 30 of the present invention. As shown in the figure, the two-stage refrigerant processing system 30 of the present invention is applied to an air conditioner having an outdoor unit 10 and an indoor unit 20. In the figure, an outdoor unit 10 is used as an example of an air conditioner of four indoor units 20. The description will be made, but is not intended to limit the type of air conditioner to which the two-stage refrigerant processing system 30 of the present invention can be applied, and is limited to the illustrated embodiment. The two-stage refrigerant processing system 30 includes a first electronic expansion valve 300, a subcooling heat exchanger 310, and a distributor 330. In the following, the two-stage refrigerant of the present invention is respectively used in the case of 1 Π 410 1379979. The distributor 303 and the third electronic expansion valve 340 are merely illustrative examples, and are not intended to limit the dispenser 330 and the third of the present invention. The number of electronic expansion valves 340 when implemented can be adjusted according to requirements or specifications when actually implemented. In the embodiment of the two-stage refrigerant processing system 30 of the present invention, the outdoor unit 10 to the distributor 330 have two sections of piping (the first section and the second section of the piping and the crucible), the first section of the tube The roller is a trunk pipe connected to the outdoor unit 10 and having a large inner diameter, and the second pipe B is a branch pipe trunk pipe connected to the distributor 330. According to the above, when the air conditioner is in the cool air mode, the first electronic expansion valve 300 is in a fully open state for the refrigerant of the air conditioner to pass (to avoid increasing the pressure loss by blocking the flow of the refrigerant), and the continuous refrigerant flows to The subcooling heat exchanger 310 passes through the second electronic expansion valve 320 of the subcooling heat exchanger 310 to perform the first expansion treatment on the refrigerant, so that the refrigerant is in a high pressure liquid state and operates in the main pipe until the main pipe After being branched to the branch pipe and after the main pipe, the distributor 330 is introduced, and then the third electronic expansion valve 340 of the distributor 330 is used to perform the second expansion process on the high-pressure liquid refrigerant to precisely control each indoor unit 20 The refrigerant flow rate changes the high-pressure liquid state to a low-pressure gas state, and enters the indoor unit 20 to perform the operation in the cold air mode. It can be seen from the above that from the outlet of the outdoor unit 10 to the path of the distributor 320, there is a main pipe mode, the trunk pipe has a large inner diameter, and since the refrigerant is in a high pressure liquid mode, the pressure in the pipe can be greatly reduced. The pipeline through which the gaseous refrigerant flows is only from the distributor 303 to the indoor unit 20, and the pipeline is short, which can minimize the pressure loss of the gaseous refrigerant, thereby increasing the air conditioner's property] 〇111410 1379979 Energy factor (system performance). In addition, when the second electronic expansion valve 320 of the subcooling heat exchanger 310 is in the first stage expansion, the subcooling heat exchanger 310 is in the double casing type (the refrigerant enters from the inner tube and flows out from the outer casing) When the refrigerant enters the main circuit of the inner tube, it is at a high pressure and a high temperature. After passing through the second electronic expansion valve 320 of the subcooling heat exchanger 310, a part of the refrigerant temperature is lowered, and the refrigerant whose temperature is lowered is returned to the refrigerant. The tube side of the supercooled heat exchanger exchanges heat with the main circuit refrigerant of the inner tube. Therefore, the temperature of the refrigerant in the main circuit is lowered, thereby increasing the degree of subcooling of the outdoor unit 10, thereby improving the coefficient of performance of the air conditioner ( Hit can). On the contrary, when the air conditioner is in the heating mode, the third electronic expansion valve 340 of the distributor 330 is in a fully open state as the first expansion treatment of the refrigerant of the air conditioner, and the refrigerant is in a high pressure liquid state and The branching pipe trunk pipe flows to the trunk pipe to the subcooling heat exchanger 310, and the second electronic expansion valve 320 of the subcooling heat exchanger 310 is in a fully closed state, thereby transmitting the first electron The expansion valve 300 performs the second zero expansion treatment on the refrigerant to change the refrigerant from a high pressure liquid state to a low pressure gas state, and enters the outdoor unit 10 to perform a heating mode operation. From the above, the distributor 330 is The path of the outdoor unit 10 has a trunk pipe mode. Since the inner diameter of the main pipe is large and the passing refrigerant is a high-pressure liquid, the pressure loss is the lowest. The gaseous refrigerant only has the shortest piping and the lowest pressure loss from the first expansion valve to the outdoor unit .10, thereby increasing the performance coefficient (system performance) of the air conditioner. It should be noted that the first electronic expansion valve 300, the supercooling heat exchanger 310 and the second electronic expansion valve in the two-stage refrigerant processing system 30 of the present invention can be implemented as in the case of the expansion valve 320. In the embodiment, it is disposed or integrated in the outdoor unit 10 in a separated manner. Please refer to Fig. 2 at the same time, which is a schematic flow chart of the two-stage refrigerant processing method of the present invention. As described above, the two-stage refrigerant processing system 30 of the present invention is applied to an air conditioner having an outdoor unit 10 and an indoor unit 20 in the two-stage refrigerant processing method of the present invention. The two-stage refrigerant processing method first performs step S10. In the step S10, a first electronic expansion valve 300, a subcooling heat exchanger 310 equipped with a second electronic expansion valve 320, and an outlet of the outdoor unit 10 are disposed, and a third electronic expansion valve 340 is disposed. The distributor 330 is connected to the inlet of the outdoor unit 10, and then proceeds to step S11 or S12 according to the air conditioning mode. In the step S11, when the air conditioner is in the cool air mode, the first electronic expansion valve 300 is in a fully open state, so that the refrigerant of the air conditioner passes, and the second electron passing through the subcooling heat exchanger 310 is continued. The expansion valve 320 performs the first expansion treatment on the refrigerant to make the refrigerant in a high-pressure liquid state, and then through the third electronic expansion valve 340 of the distributor 330 to perform a second expansion treatment, so that the refrigerant is in a low-pressure gas state, and The indoor unit 20 is entered to perform the operation in the cool air mode. In the step S12, when the air conditioner is in the heating mode, the third electronic expansion valve 340 of the distributor 330 is fully opened to serve as the first expansion treatment of the refrigerant of the air conditioner, so that the refrigerant is in a high pressure liquid state. And passing the refrigerant, and at the same time, the second electronic expansion valve 320 of the subcooling heat exchanger 310 is in a fully closed state, and the second expansion treatment of the refrigerant is performed through the first electronic expansion chamber 300 12 111410 1379979 The refrigerant is placed in a low-pressure gas state and enters the outdoor unit 10 to perform the heating mode operation. It should be noted that the specific practical manner of the connection between the elder member and the components in the two-stage refrigerant treatment method of the present invention is the same as the two-stage refrigerant treatment system 30 of the present invention described above, and will not be further described herein.
综上所述，本發明所揭示之兩段式冷媒處理系統及方 法，主要係係先設置第一電子膨脹間、配設有第二電子膨 脹閥之過冷度熱交換器於該室外機的出口，並設置配設有 第三電子膨脹間之分配器於該室外機的入口，以對冷媒進 行兩段膨脹處理，其中，經第一次膨脹處理後，會使冷媒 於室外機至室内機中路徑較長的主幹管内處於高壓液態， 再經第二次膨脹處理後，使該冷媒處於低壓氣態，再進入 室内機或室外機，藉此避免習知技術中由於室外機至室内 機的管路太長而導致氣態冷媒的壓損過甚，故而，本發明 之兩段式冷媒處理系統及方法可有效地提高空調機的性能 係數（系統性能），此外，當冷媒進入本發明之圈殼式之過 冷度熱交換器的第二電子膨脹閥，一部分的冷媒溫度會降 低，藉由降低溫的冷媒回流圈殼式之過冷度熱交換器的管 側，可與内管的主迴路冷媒進行熱交換，進而降低主迴路 冷媒的溫度，因此，亦可增加室外機的過冷度，提高空調 機的性能係數（系統性能）。 上述之實施例僅為例示性說明本發明之特點及其功 效，而非用於限制本發明之實質技術内容的範圍。任何熟 習此技藝之人士均可在不達背本發明之精神及範疇下，對 ]]]410 1379979 上述實施例進行修飾與變化。因此，本發明之權利保護範 圍，應如後述之申請專利範圍所列。 【圖式簡單說明】 第1圖係為本發明之兩段式冷媒處理系統之系統示意 圖；以及 第2圖係為本發明之兩段式冷媒處理方法之流程示意 圖。 【主要元件符號說明】 10 室外機 20 室内機 30 兩段式冷媒處理系統 300 第一電子膨脹閥 310 過冷度熱交換器 320 第二電子膨脹閥 330 分配器 340 第三電子膨脹閥 350 旁通閥 A 第一段管路 B 第二段管路 S10-12 步驟 14 1 Π410In summary, the two-stage refrigerant processing system and method disclosed in the present invention mainly comprises first setting a first electronic expansion chamber and a subcooling heat exchanger equipped with a second electronic expansion valve in the outdoor unit. Exporting, and providing a distributor equipped with a third electronic expansion chamber at the inlet of the outdoor unit to perform two-stage expansion treatment on the refrigerant, wherein after the first expansion treatment, the refrigerant is sent to the outdoor unit to the indoor unit The main pipe with a long middle path is in a high-pressure liquid state, and after the second expansion treatment, the refrigerant is in a low-pressure gas state, and then enters the indoor unit or the outdoor unit, thereby avoiding the tube from the outdoor unit to the indoor unit in the prior art. The road is too long to cause pressure loss of the gaseous refrigerant, so the two-stage refrigerant treatment system and method of the present invention can effectively improve the performance coefficient (system performance) of the air conditioner, and further, when the refrigerant enters the trap type of the present invention The second electronic expansion valve of the subcooling heat exchanger, a part of the refrigerant temperature is lowered, by reducing the temperature of the refrigerant, and the tube side of the subcooling heat exchanger The main circuit refrigerant of the tube exchanges heat, thereby lowering the temperature of the main circuit refrigerant. Therefore, the degree of subcooling of the outdoor unit can be increased, and the performance coefficient (system performance) of the air conditioner can be improved. The above-described embodiments are merely illustrative of the features and advantages of the present invention and are not intended to limit the scope of the invention. Any person skilled in the art can make modifications and variations to the above embodiments without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of a system of a two-stage refrigerant processing system of the present invention; and Fig. 2 is a schematic flow chart of a two-stage refrigerant processing method of the present invention. [Main component symbol description] 10 Outdoor unit 20 Indoor unit 30 Two-stage refrigerant processing system 300 First electronic expansion valve 310 Subcooling heat exchanger 320 Second electronic expansion valve 330 Distributor 340 Third electronic expansion valve 350 Bypass Valve A First stage line B Second stage line S10-12 Step 14 1 Π410