TWI272366B

TWI272366B - Freezing apparatus

Info

Publication number: TWI272366B
Application number: TW94130716A
Authority: TW
Inventors: Masaaki Takegami; Satoru Sakae; Kenji Tanimoto
Original assignee: Daikin Ind Ltd
Priority date: 2004-09-07
Filing date: 2005-09-07
Publication date: 2007-02-01
Also published as: JP2006078014A; WO2006028147A1; JP3858918B2; TW200622166A

Abstract

In a refrigerant circuit (20), there are arranged a first and a second cooling heat exchanger (131, 141) for individually cooling the insides of chambers and a first and a second expansion mechanisms (132, 142) corresponding to the first and the second cooling heat exchanger (131, 141). Further, in the refrigerant circuit (20) is provided a bypass tube (133) connected at one end to the inflow end of the first expansion mechanism (132) and at the other end to a section between the first cooling heat exchanger (131) and the second expansion mechanism (142). During normal operation, a refrigerant flows in the first and the second cooling heat exchanger (131, 141), and cooling capacity of each of the cooling heat exchangers (131, 141) is regulated by the first and the second expansion mechanisms (132, 142). When cooling by the first cooling heat exchanger (131) is not required, the refrigerant flows in the second cooling heat exchanger (141) through the bypass tube (133), and cooling capacity of the second cooling heat exchanger (141) is regulated by the second expansion mechanism (142).

Description

1272366 九、發明說明：【發明所屬之技術領域】本發明係關於一種冷凍裝置，在其冷媒迴路中複數台冷卻庫内的熱交換器串聯而設。【先前技術】個別冷卻複數個庫内的冷凍裝置之前已經被提出。馨如圖12所示專利文獻丨之冷凍裝置（2〇〇)，在冷媒循環而進行蒸氣壓縮式的冷凍循環之冷媒迴路（2 1〇)，個別冷卻兩個庫内的第1冷卻熱交換器（221)與第2冷卻熱交換器（222)串聯連接。並且，在冷媒迴路（21〇)設有壓縮機（223)、室外熱交換器（224)、以及作為膨脹機構的第1毛細管（225)。進而，在冷媒迴路（210)還具備旁通管（226)，旁通管（226)用來使通過第1毛細管（225)被減壓的冷媒繞過上述第j冷卻熱交換器 (221)而送到第2冷卻熱交換器（222)。在該旁通管（226)設有第2毛細管（227)，其對流通該旁通管（226)的冷媒賦予規定之抵抗。同時，在第1冷卻熱交換器（22丨）與第2冷卻熱交換益（222)之間的管路中，設有流量調整閥（228)，以調整從第 1冷卻熱父換(221)流向第2冷卻熱交換器（222)的冷媒流量如上述結構之冷凍裝置（200)在運轉時，在壓縮機（223) 文到壓縮的冷媒，於室外熱交換器（224)向空氣散熱凝結。在至外熱父換器（224)凝結的冷媒，於第！毛細管（225)被減壓至規定壓力。於此，冷凍裝置（200)在通常運轉時，上述流量調整閥 104698.doc 1272366 (228)開啟至規定開度。結果，在第i毛細管（225)被減壓的冷媒，流過第1冷卻熱交換器（221)。進而，在第丨冷卻熱交換器（221)，冷媒從庫内空氣吸熱而蒸發。在第}冷卻熱交換器（221)蒸發的冷媒，通過流量調整閥（228)後，流過第2冷卻熱交換器（222)。進而，在第2冷卻熱交換器（222)，冷媒自庫内空氣吸熱更進一步蒸發。如上述般，該冷凍裝置（2〇〇) 中’通常運轉時經由開啟流量調整閥（228)，使冷媒依序流過第1冷卻熱交換器（221)、第2冷卻熱交換器（222)，在兩台冷卻熱交換器（221，222)中進行庫内之冷卻。另一方面，在冷凍裝置（2〇〇)中，當第】冷卻熱交換器（221) 進行的庫内冷卻已經足夠而不需要該第丨冷卻熱交換器 (221) 之冷卻時，流量調整閥（228)成為全閉狀態。結果，在第1毛細管（225)被減壓的冷媒，通過旁通管（226)與第2毛細管（227)，繞過第i冷卻熱交換器（221)流入第2冷卻熱交換器 (222) 。因此，此一運轉動作中，第i冷卻熱交換器（221)並不進行庫内冷卻，僅有第2冷卻熱交換器（222)進行庫内冷卻。如上述般，專利文獻1之冷凍裝置（2〇〇)，在膨脹機構的第 1毛細管（225)下游側連接旁通管（226)，以流量調整閥（228) 來调1刀配到旁通官（226)的冷媒流量，能夠避免第i冷卻熱交換器（221)的庫内冷卻不需要時進行多餘冷卻。同時、，作為其他的冷滚裝置，譬如專利文獻2之冷床裝置也向來為人所知H東裝置中，冷藏迴路與冷;東迴路並聯連接至具有主壓縮機的熱源側迴路，冷藏迴路設有冷卻 104698.doc 1272366 ::庫：的冷藏熱交換器，冷;束迴路設有冷卻冷凌庫内的 “熱父換器。在上述冷;東迴路設有副遷縮機。進而，此一冷凌裝置之冷媒迴路’是以上述冷仙路為高段側而以上切凌迴路為低段側，構成所謂2錢縮式的冷媒迴路。換。之，此一冷;東裝置，在結構上，流經冷藏熱交換器的冷媒作為主Μ縮機的熱源進行冷耗環，同時，使流經冷束熱交換器的冷媒作為低段㈣壓縮機與高段側主壓縮機的熱源來進行冷凍循環。 [專利文獻1]日本特開2002-^79]^號公報 [專利文獻2]曰本特開2〇〇2-228；297號公報【發明内容】一解決課題一然而，如上述專利文獻丨，在複數的冷卻熱交換器（221， 222)串聯而設的冷凍裝置中，使冷媒在第1毛細管（225)受到減壓後流過第1冷卻熱交換器（221)側或旁通管（226)側。因而，在譬如上述之通常運轉時，由於流入第丨冷卻熱交換器 (221)的冷媒壓力因第1毛細管（225)之抵抗而受到規定，使得第1冷卻熱交換器（221)的冷媒之蒸發壓力、即冷卻能力的調整變得困難。同時，由於不需要第1冷卻熱交換器（221)的庫内冷卻、而只有第2冷卻熱交換器（222)進行冷卻的運轉動作中，流入第 2冷卻熱父換器（222)的冷媒壓力因第1毛細管（225)及第2毛細管（227)的抵抗受到規定，因此對第2冷卻熱交換器（222) 的蒸發壓力、即冷卻能力進行調整變得困難。並且，此一 104698.doc I272366 運轉時，也能夠考慮經由譬如使流量調整閥（228)開啟至規定量來調整流過旁通管（226)的冷媒流量，但是這種情況時，由於冷媒將流過第i冷卻熱交換器（221)，因此在第丄冷卻熱父換器（221)將進行多餘的冷卻。如上述般，專利文獻丨之冷凍裝置中，雖然經由使冷媒流過旁通管（226)將能夠只在必要的冷卻熱交換器進行冷卻，但是調整各個冷卻熱交換器的冷卻能力並不容易，因此有著如下問題：將難以對複數的庫内個別進行溫度控制。並且，在譬如專利文獻2之冷凍裝置、即具有所謂2段壓縮式的冷媒迴路之冷凍裝置中，複數台冷卻冷凍庫内的冷卻熱父換器（冷凍熱交換器）串聯設置的情況下，也同樣產生這類問題。本發明為鑑於上述問題點所思考而出，其目的在於：提供一種冷凍裝置，即在複數的冷卻熱交換器串聯設置的冷媒迴路之冷凍裝置中，只在必要的冷卻熱交換器進行庫内 •冷部，同時，能夠個別調整各冷卻熱交換器的冷卻能力。 —解決手段一本發明為：在複數台冷卻熱交換器串聯而設的冷媒迴路之冷凍裝置中，設置對應複數台冷卻熱交換器的複數膨脹機構’同時’在冷媒迴路中使得冷媒在膨脹機構被減壓前以規定路徑來迁迴。1272366 IX. Description of the Invention: [Technical Field] The present invention relates to a refrigerating apparatus in which a plurality of heat exchangers in a cooling chamber are connected in series in a refrigerant circuit. [Prior Art] Individually cooling a plurality of freezers in a library has been previously proposed. As shown in Fig. 12, the refrigeration system (2〇〇) of the patent document , circulates the refrigerant to perform a vapor compression refrigeration cycle (2 1〇), and separately cools the first cooling heat exchange in the two reservoirs. The device (221) is connected in series with the second cooling heat exchanger (222). Further, a compressor (223), an outdoor heat exchanger (224), and a first capillary (225) as an expansion mechanism are provided in the refrigerant circuit (21 〇). Further, the refrigerant circuit (210) further includes a bypass pipe (226) for bypassing the j-th cooling heat exchanger (221) by the refrigerant decompressed by the first capillary (225). It is sent to the second cooling heat exchanger (222). A second capillary tube (227) is provided in the bypass pipe (226) to impart a predetermined resistance to the refrigerant flowing through the bypass pipe (226). At the same time, a flow regulating valve (228) is provided in the line between the first cooling heat exchanger (22丨) and the second cooling heat exchange benefit (222) to adjust the heat from the first cooling heat (221). The flow rate of the refrigerant flowing to the second cooling heat exchanger (222) is the same as that of the refrigeration unit (200) having the above configuration, and the refrigerant is compressed in the compressor (223) and is radiated to the air in the outdoor heat exchanger (224). Condensation. The refrigerant that condenses in the outer heat exchanger (224), in the first! The capillary (225) is depressurized to a prescribed pressure. Here, in the normal operation of the freezing device (200), the flow rate adjusting valve 104698.doc 1272366 (228) is opened to a predetermined opening degree. As a result, the refrigerant decompressed in the i-th capillary (225) flows through the first cooling heat exchanger (221). Further, in the second cooling heat exchanger (221), the refrigerant absorbs heat from the inside of the reservoir and evaporates. The refrigerant evaporated in the first cooling heat exchanger (221) passes through the flow rate adjusting valve (228) and then flows through the second cooling heat exchanger (222). Further, in the second cooling heat exchanger (222), the refrigerant absorbs heat from the inside of the refrigerator and further evaporates. As described above, in the refrigeration system (2〇〇), the refrigerant flows through the first cooling heat exchanger (221) and the second cooling heat exchanger (222) by the opening flow rate adjustment valve (228) during normal operation. The cooling in the chamber is performed in two cooling heat exchangers (221, 222). On the other hand, in the refrigerating apparatus (2〇〇), when the in-compartment cooling by the first cooling heat exchanger (221) is sufficient without cooling of the second cooling heat exchanger (221), the flow rate adjustment is performed. The valve (228) is fully closed. As a result, the refrigerant decompressed in the first capillary (225) passes through the bypass pipe (226) and the second capillary (227), and flows into the second cooling heat exchanger (222) around the i-th cooling heat exchanger (221). ). Therefore, in this operation, the i-th cooling heat exchanger (221) does not perform internal cooling, and only the second cooling heat exchanger (222) performs internal cooling. As described above, in the freezing device (2〇〇) of Patent Document 1, the bypass pipe (226) is connected to the downstream side of the first capillary tube (225) of the expansion mechanism, and the flow regulating valve (228) is used to adjust the knife to the side. The refrigerant flow rate of the official (226) can prevent unnecessary cooling when the internal cooling of the i-th cooling heat exchanger (221) is not required. At the same time, as another cold rolling device, for example, the cold bed device of Patent Document 2 is also known as the H East device, the refrigerating circuit is cooled, and the east circuit is connected in parallel to the heat source side circuit having the main compressor, and the refrigerating circuit There is cooling 104698.doc 1272366::Library: Refrigerated heat exchanger, cold; the beam loop is provided with a "hot parent converter" in the cooling cold storage tank. In the above cold; the east loop is equipped with a secondary retracting machine. Further, The refrigerant circuit of the cold-cooling device is such that the above-mentioned cold-scented road is a high-segment side and the above-mentioned cutting-in loop is a low-stage side, and constitutes a so-called 2-cylinder-type refrigerant circuit. In this case, the cold device; Structurally, the refrigerant flowing through the refrigerating heat exchanger serves as a heat source for the main collapsing machine to perform a cooling ring, and at the same time, the refrigerant flowing through the cold beam heat exchanger is used as a low-stage (four) compressor and a high-stage main compressor. The heat source is used for the refrigerating cycle. [Patent Document 1] Japanese Laid-Open Patent Publication No. JP-A-2002-1995 , as in the above-mentioned patent document 丨, in a plurality of cooling heat exchangers (221 222) In the refrigeration system provided in series, the refrigerant is decompressed in the first capillary tube (225) and then flows through the first cooling heat exchanger (221) side or the bypass pipe (226) side. During the normal operation, the pressure of the refrigerant flowing into the second cooling heat exchanger (221) is regulated by the resistance of the first capillary (225), so that the evaporation pressure of the refrigerant in the first cooling heat exchanger (221), that is, the cooling. It is difficult to adjust the capacity. At the same time, since the internal cooling of the first cooling heat exchanger (221) is not required, and only the second cooling heat exchanger (222) performs the cooling operation, the second cooling hot parent flows into the second cooling heat master. Since the refrigerant pressure of the converter (222) is regulated by the resistance of the first capillary tube (225) and the second capillary tube (227), it is difficult to adjust the evaporation pressure of the second cooling heat exchanger (222), that is, the cooling capacity. Moreover, when this 104698.doc I272366 is operated, it is also possible to adjust the flow rate of the refrigerant flowing through the bypass pipe (226) by, for example, opening the flow regulating valve (228) to a prescribed amount, but in this case, due to the refrigerant Will flow through the ith cooling heat Since the compressor (221) is used, the second cooling cooling master (221) will perform excessive cooling. As described above, in the refrigeration system of the patent document, the refrigerant can be passed through the bypass pipe (226). Cooling is performed only in the necessary cooling heat exchanger, but it is not easy to adjust the cooling ability of each of the cooling heat exchangers, and therefore there is a problem that it is difficult to individually control the temperature of the plurality of banks. Further, for example, Patent Document 2 In a refrigerating apparatus, that is, a refrigerating apparatus having a so-called two-stage compression type refrigerant circuit, when a plurality of cooling hot-storage devices (freezing heat exchangers) in a cooling refrigerator are connected in series, such a problem occurs similarly. The present invention has been made in view of the above problems, and an object thereof is to provide a refrigerating apparatus in which a refrigerating apparatus of a refrigerant circuit provided in series with a plurality of cooling heat exchangers is provided only in a necessary cooling heat exchanger. • The cold part, at the same time, the cooling capacity of each cooling heat exchanger can be individually adjusted. - Solution 1 In the present invention, a plurality of expansion mechanisms corresponding to a plurality of cooling heat exchangers are provided in a refrigeration system in which a plurality of cooling heat exchangers are connected in series, and a refrigerant is in the expansion mechanism in the refrigerant circuit. Move back to the prescribed path before being decompressed.

進一步具體來說，第1發明為以如下的冷凍裝置為前提：即、具備冷媒迴路（20)，該冷媒迴路（20)設有分別冷卻相異庫内的第1與第2冷卻熱交換器（13 1，1 41 )、壓縮機（4 J 104698.doc 1272366 )以及知脹機構Π 32，142);在該冷媒迴路（20)上述第 1、第2冷卻熱交換器（131，：!41)串聯連接。進而，此一冷凍裝置中，上述膨脹機構（132, 142)由第！膨脹機構（132)與第2 膨脹機構（142)所構成，第1膨脹機構〇32)調整流入上述第工冷卻熱交換器（131)的冷媒壓力，第2膨脹機構（142)調整流入上述第2冷卻熱交換器（141)的冷媒壓力；在冷媒迴路 (2〇)，其一端連接第}膨脹機構（132)的流入端，另一端連接第1冷卻熱交換器（131)與第2膨脹機構（142)之間，同時設有具有流量調整機構（SV-6, 137)的第1旁通管（133)。上述第1發明中，冷凍裝置設有冷媒迴路（2〇)，在該冷媒迴路（20)冷媒循環進行蒸氣壓縮式的冷凍循環。在冷媒迴路 (2〇)，分別冷卻相異庫内的第〗與第2冷卻熱交換器（131， 141)串聯連接。並且，在冷媒迴路（2〇)設有對應各冷卻熱交換裔（131，141)的第1與第2膨脹機構（丨32, 142) 〇於此，在此一冷凍裝置的通常運轉時，使第i旁通管（133) 的流量控制機構（SV-6, 137)為全閉狀態並使第丨膨脹機構 (I32)開放到規定開度，在壓縮機（仏1S1)壓縮後，能夠使得例如在至外熱父換器凝結的冷媒流入第丨膨脹機構 (132)。此時，因應第丨膨脹機構（132)的開度冷媒壓力被調整到規定壓力。在帛1膨脹機構（j 3 2)受到減壓的冷媒流過第 1冷部熱父換器（131)。在第丨冷卻熱交換器，冷媒由庫内空氣吸熱蒸發。因此，第丨冷卻熱交換器（丨3丨）使得庫内冷部至規定溫度。流出第1冷卻熱交換器（131)的冷媒，通過第 2膨脹機構（142)。此日寺，因應第2膨脹機構〇42)的開度冷媒 104698.doc 1272366 壓力被調整至規定麼力。在第2膨脹機構（142)受到減麼的冷媒，流過第2冷卻熱交換器（141卜在第2冷卻熱交換器 (⑷），冷媒從庫内空氣吸熱進一步蒸發。因此，第2冷卻: 父換器（14 1)使庫内冷卻至規定溫度。如上述般，以第i與第2冷卻熱交換器（131，141)冷卻庫内 _ 的通常運轉時，使冷媒不導人第W通管⑽），能夠讓冷媒 - 流過第1、第2冷卻熱交換器（131，⑷）。此時，以第i膨騰 • 機構（132)調整第1冷卻熱交換器（131)的冷卻能力，同時， • 能夠以第2膨脹機構（M2)調整第2冷卻熱交換器（141)的冷 . 卻能力。另一方面，在此一冷凍裝置中，如果不需要第丨冷卻熱交換器（131)進行庫内冷卻時，則開啟第i旁通管〇33)的流量調整機構（SV-6, 137)並使第1膨脹機構（132)為全閉狀態，則能夠將凝結後的冷媒導入第1旁通管（133)。因此，冷媒不流過第1膨脹機構（132)及第i冷卻熱交換器（131)，而通過第2 • 膨脹機構（142)。此時，因應第2膨脹機構（142)的開度，冷媒壓力被調整至規定壓力。在第2膨脹機構（142)受到減壓的冷媒，流過第2冷卻熱交換器（141)。在第2冷卻熱交換器 (141)，冷媒從庫内空氣吸熱蒸發。因此，第2冷卻熱交換器 (141)使得庫内冷卻至規定溫度。如上所述，當不需要第1冷卻熱交換器（131)進行庫内冷卻時’經由使冷媒導入第1旁通管（13 3 )，能夠使得冷媒僅流過第2冷卻熱交換器（141)。此時，能夠以第2膨脹機構（142) 調整第2冷卻熱交換器（141)的冷卻能力。 104698.doc -10- 1272366 第2發明為··在第〗發明之冷凍裝置中，第}旁通管〇33) 具有導熱部（13冲其在形成上與第1冷卻熱交換11(131)的導熱管接觸。上述第2發明中’當第1冷卻熱交換11(131)對庫内的冷卻已經足夠而進行將冷媒導入第i旁通管（133)的旁流動作時，—流經第1旁通管（133)的冷媒之熱，透過導熱部（133a)傳到第1冷部熱父換器（13 U。較低溫狀態的庫内空氣與流經第 1旁通管（133)的冷媒透過第丨冷卻熱交換器（131)及導熱部 (133a)進行熱父換，如此使得流經第}旁通管（133)的冷媒受到冷卻。因此，僅以第2冷卻熱交換器（141)冷卻庫内時，能夠在第1旁通管（133)的導熱部（133叻對被送至第2冷卻熱交換器（141)的冷媒進行過冷（superc〇〇][ing)。第3發明為以如下之冷凍裝置為前提··即設有冷媒迴路 (2〇)，該冷媒迴路（20)具有分別冷卻相異庫内之第1與第2冷卻熱父換器（13 1，141)、壓縮機（41，151)、以及膨脹機構（132， 142)，在該冷媒迴路（2〇)，上述第1、第2冷卻熱交換器（131， 141) 串聯連接。並且，此一冷凍裝置中，上述膨脹機構〇32, 142) 由第1膨脹機構（132)與第2膨脹機構（142)所構成，第工 %脹機構（132)調整流入上述第i冷卻熱交換器（丨3丨）的冷媒壓力’第2膨脹機構（丨42)調整流入上述第2冷卻熱交換器 (141)的冷媒壓力；在冷媒迴路（2〇)設有第}旁通管（133)，第 1旁通管（133)之一端連接第脹機構（132)的流入端，其另一端連接該第1膨脹機構（132)與第i冷卻熱交換器（131)之間，同時具有流量調整機構（SV-6, 13 7)。 104698.doc -11 - 1272366 上述第3發明中，在冷媒迴路（2〇)設有結構相異於第丨發明中之第1方通官（133)。具體而言，第1發明中，第1旁通管 (133)構成從第^衫脹機構（132)的流入端到第工冷卻熱交換為（13 1)的流出端之旁通管路徑；相對於此，第3發明中，第 1旁通管（133)構成從第}膨脹機構（132)的流入端到該丨膨脹 •機構（132)的流出端之旁通管路徑。此外，上述兩項發明中 -之旁通管（133)，在繞過第脹機構（132)的此一技術特徵上均為相同。 ’ 於此，在此一冷凍裝置的通常運轉中，使第1旁通管（133) ' 的流量控制機構（SV_6, 137)為全閉狀態，並使第1膨脹機構 (132)開啟至規定開度，使凝結後的冷媒流入第丨膨脹機構 (132)。因此，與第1發明同樣的，能使冷媒流經第丨、第2 冷卻熱交換器（131，141)，同時能以對應各冷卻熱交換器 (131，141)的膨脹機構（132，142)來調整兩冷卻熱交換器 (131，141)之冷卻能力。 ❿ 另一方面，在此冷凍裝置中，當不需要第1冷卻熱交換器 (131)進行庫内冷卻時，則開啟第1旁通管（1 33)的流量調整機構（SV-6, 137)並使第1膨脹機構（132)為全閉狀態，能夠將凝結後的冷媒導入第1旁通管（13 3 )。因此，冷媒不流經第1 膨脹機構（132)，而以未被減壓的狀態流過第1冷卻熱交換器 (131)。因而，在第1冷卻熱交換器（131)中，冷媒不蒸發，而與較低溫狀態的庫内空氣進行熱交換來進行冷卻。換言之，在第1冷卻熱交換器（131)中，能夠進行冷媒的過冷。流出第1冷卻熱交換器（13 1)的冷媒，將通過第2膨脹機構 104698.doc -12- 1272366 (142)。此時，因應第2膨脹機構（142)的開度冷媒的壓力被調整至規定壓力。在第2膨脹機構（142)受到減壓的冷媒，流過第2冷卻熱交換器（141)。在第2冷卻熱交換器（141)，冷媒從庫内空氣吸熱而蒸發。因此，第2冷卻熱交換器（141)使得庫内冷卻至規定溫度。如上所述，當運轉中不需要第1冷卻熱交換器（131)進行冷卻時，經由將冷媒導入第1旁通管（13 3 )，能夠使得流過第1 冷卻熱交換器（131)的冷媒不蒸發而將冷媒送至第2冷卻熱交換器（141)。因此，除了能夠僅使第2冷卻熱交換器（141) 進行庫内冷卻，同時，能夠以第2膨脹機構（142)來調整第2 冷卻熱交換器（14 1)的冷卻能力。此時，由於在第1冷卻熱交換器（131)進行冷媒的過冷，能夠提高第2冷卻熱交換器 (14 1)的冷卻能力。第4發明為：在第i至第3發明之任一發明的冷凍裝置中，冷媒迴路（20)設有第2旁通管（143)，該第2旁通管（143)的一端連接第2膨脹機構（142)的流入端、另一端連接該第2冷卻熱父換器（141)的流出端、同時具有流量調整機構（SV-6, 137)。上述第4發明中，設有與上述第1旁通管（133)相同的第2 旁通官（143)作為第2冷卻熱交換器（141)的旁通管路徑。因此，當不需要第2冷卻熱交換器（} 4丨）進行冷卻時，能夠僅使冷媒w過第1冷卻熱交換器（13 1 )，同時，以第1膨脹機構 (132)來調整第1冷卻熱交換器（131)的冷卻能力。第51明為·在第丨至第4發明之任一發明的冷凍裝置中， 104698.doc -13- 1272366 流S控制機構以開關自在的電磁閥（sv_幻構成。上述第5兔明中，設有電磁閥（SV-6)作為第i旁通管（133) 或第2旁通管(143)的流量調整機構。因&，經由電磁閥 (SV-6)的開關動作，能夠簡單地進行在旁通管"η，丨43)的旁流動作之切換。第6 ^月為·在第1至第4發明的任一發明之冷滚裝置中，以開度可變的電動閥（137)來構成流量控制機構。 ^述第6發明中，設置了電動閥（137)作為第！旁通管（133) 或第2旁通管(143)的流量調整機構。因此，經由將電動閥 (137)切換為全閉狀態或全開狀態，能夠進行在旁通管（iM， 143)的旁流動作之切換。並且，經由將電動閥（137)的開度調整至規定開度，也能夠調整繞經旁通管(133,143)的冷媒流量、與不繞經旁通管 033, 143)而流過冷熱交換器⑴丨，⑷）的冷媒流量的分配比率。因此，也能夠調整流經各冷卻熱交換器（131，“”的冷媒流量，而調整流經該冷卻熱交換器（131，141)的冷卻能力。第7發明為：在第丨至第6發明之冷凍裝置中，壓縮機（4工， 151)由主壓縮機（41)與副壓縮機（151)構成，冷媒迴路（2〇) 由冷藏迴路（110)與冷凍迴路（3〇)並聯連接至具有上述主壓縮機（41)的熱源側迴路（4〇)所構成，該冷藏迴路（ιι〇)具有冷卻冷藏庫内的冷藏熱交換器（111)，該冷凍迴路（3〇)具有分別冷卻相異的冷凍庫内之第丨、第2冷卻熱交換器的第工、第2冷卻熱交換器（13 1，14 1)。 104698.doc -14- I272366 上述第7發明中，成為高段側的冷藏迴路（11〇)與成為低段側的冷凍迴路（30)並聯連接至熱源側迴路（4〇)，構成所謂二奴壓縮式的冷媒迴路（20)。在成為低段側的冷凍迴路（3〇)，第1與第2冷卻熱交換器（第1、第2冷凍熱交換器）（131，141) 串聯連接。並且，第丨、第2冷卻熱交換器（131，141)冷卻冷凍庫内。因此，經由切換旁通管（133, 143)的旁流動作，能夠僅使其中之一的冷卻熱交換器來冷卻冷凍庫内。同時，旎夠以與該冷卻熱交換器（131，141)對應的膨脹機構（132, 142)來調整各冷卻熱交換器（131，141)的冷卻能力。一發明效果一根據上述第1發明，在以第1與第2冷卻熱交換器（131， 141)冷卻庫内的通常運轉中，能夠使冷媒不經由第丨旁通管 (133)而流過第1冷卻熱交換器（131)與第2冷卻熱交換器 (141)兩者。於此，冷媒在流入第1冷卻熱交換器（131)之前通過第1膨脹機構（132)。因此，經由將第丨膨脹機構（132) 的開度调整至規定開度調整，能夠調整第丨冷卻熱交換器 (13 1)的冷卻能力。同樣的，冷媒在流入第2冷卻熱交換器 (141)之剞通過第2膨脹機構（142)。因此，能夠調整第2膨脹機構（142)的開度並調整第2冷卻熱交換器（141)的冷卻能力。並且，根據本發明，當第1冷卻熱交換器（丨3丨）對庫内的冷卻已經足夠而不需要第1冷卻熱交換器（丨3丨）進行庫内冷卻時’能夠使冷媒經由第1旁通管（133)僅流過第2冷卻熱交換器（141)。因此，能避免第1冷卻熱交換器（131)進行多餘的 104698.doc -15- 1272366 冷卻。仁疋在第1冷部熱交換器（131)與第2冷卻熱交換器（141) 串聯連接的冷媒迴路（2〇)中，進行如上述的通常運轉時，比第2冷卻熱交換器（141)位於上游側的第丨冷卻熱交換器 (m)的冷部能力有變高的傾向。因此，在設有第1冷卻熱交換、-(131)的庫内’比設有第轉卻熱交換器（⑷）的庫内容易冷部’因此，在通常運轉時，容易造成第1冷卻熱交換器 (131)的冷部能力過剩而第2冷卻熱交換器ο")的冷卻能力不足。 <另一方面，根據本發明，經由第1旁通管（133)的旁流動作來钐止第1冷卻熱父換器（丨3丨）的庫内冷卻，使得僅有第2冷部熱父換器（141)進行庫内冷卻，因此能夠有效率地冷卻複數的庫内。進而，根據本發明，在第1旁通管（133)的旁流動作時，冷媒在流入第2冷卻熱交換器（141)之前通過第2膨脹機構〇42)。因此，能夠調整第2膨脹機構（142)的開度而調整第2 冷卻熱交換器（141)的冷卻能力。盥j據上述第2發明，使得第1旁通管（133)的導熱部（133&) $第1冷卻熱交換器（131)的導熱管接觸。因此，將冷媒導入弟1旁通管（133)時，將流過第！旁通管〇33)的冷媒的熱傳至 =1冷部熱交換器（i 3丨），來進行此冷媒的過冷。因此，僅以第冷卻熱父換器（141)進行庫内冷卻時，能夠提高第2冷卻熱父換器（14 1)的冷卻能力。特別是，在第1冷卻熱交換器（131)與第2冷卻熱交換器 104698.doc -16 - 1272366 (141) 串聯連接的冷媒迴路（20)中進行通常運轉時，如上所述，第2冷卻熱交換器（141)的冷凍能力容易傾向不足，若根據本發明，將能夠經由冷媒的過冷而迅速解消第2冷卻熱交換态（14 1)的冷;東能力之不足。並且，譬如空氣中的水分附著於第1冷卻熱交換器（131) 而結霜時，也能夠利用流過第1旁通管（1 33)的冷媒的熱，來進行第1冷卻熱交換器（131)的除霜。根據上述第3發明，在以第1、第2冷卻熱交換器（131，141) 冷卻庫内的通常運轉中，能不透過第丨旁通管（133)使冷媒流過兩冷卻熱交換器（13 1，14 1)。進而，能夠以與各冷卻熱交換器（131，141)對應的膨脹機構（132, 142)調整第丨、第2冷卻熱交換器（13 1，141)的冷凍能力。同時，根據本發明，當不需要第丨冷卻熱交換器（131)進行庫内冷卻時，經由將冷媒導入第i旁通管（133)，能夠在第工膨脹機構（132)不受到減壓，而流過第丨冷卻熱交換器 (13 1)。因而，第1冷卻熱交換器（131)將不進行庫内冷卻，而僅在第2冷卻熱交換器（141)進行庫内冷卻。因此，能迴避在第1冷卻熱交換器（131)進行多餘的冷卻。此時，由於冷媒在流入第2冷卻熱交換器（141)之前通過第2膨脹機構 (142) ，因此能夠調整第2膨脹機構（142)的開度而調整第味卻熱交換器（14 1)的冷卻能力。進而，根據本發明’當不需要第1冷卻熱交換器（131)進行庫内冷卻時’、經由使導入^旁通管（133)的冷媒流過第碑卻熱交換器（131)，能夠在第1冷卻熱交換器031)中，進行 104698.doc 1272366 冷媒的過冷。因此，能夠提高第2冷卻熱交換器（i4i)的冷卻能力。特別是，在第1冷卻熱交換器（131)與第2冷卻熱交換器 (141)串聯連接的冷媒迴路（2〇)中進行通常運轉時，如上所述，由於第2冷卻熱交換器（141)的冷凍能力傾向不足，但是，根據本發明，能夠經由冷媒的過冷迅速解消第2冷卻熱父換為、（14 1)的冷康能力之不足。並且，經由流過第1冷卻熱交換器（131)的冷媒從内部來加熱第1冷卻熱交換器（131)的導熱管，能夠有效地進行第工冷卻熱交換器（13 1)的除霜。若根據上述第4發明，設置了第2旁通管（143)來作為第二冷部熱父換器（141)的旁通管路徑。因此，譬如在第2冷卻熱父換器（141)的中斷熱交換時等，當不需要第2冷卻熱交換器 (141)進行庫内冷卻時，能夠僅使冷媒流過第丨冷卻熱交換器 (131)僅使該第1冷卻熱交換器（131)進行庫内冷卻。並且，此時，能夠以第1膨脹機構（132)來調整第i冷卻熱交換器 (13 1)的冷卻能力。右根據上述第5發明，使用電磁閥（SV-6)來作為旁通管 (1 33，143)的流量調整機構。因此，能夠以單純的結構來進行在旁通管（133, 143)的旁流動作之切換。右根據上述第6發明，使用電動閥（137)來作為旁通管 (133, 143)的流量調整機構。因此，經由將電動閥（137)的開度凋整至規定開度調整，能夠調整繞經旁通管（133, 143)的冷媒流量、與不繞經旁通管（133, 143)而流過冷卻熱交換器 104698.doc 1272366 (1 3 1，14 1)的冷媒流量的分配比率。因此，經由調整電動閥 (137)的開度能夠調整第1冷卻熱交換器（131)及第2冷卻熱交換器（141)的冷卻能力。若根據上述第7發明，在所謂2段壓縮式的冷媒迴路（20) 中，在成為低段側的冷凍迴路（3〇)串聯設置作為第！、第2 冷卻熱交換器的第1、第2冷卻熱交換器（131，141)，使之適用第1至第6發明。因此，在此一冷凍裝置中，能夠僅以必要的冷卻熱交換器（131，141)來進行冷凍庫内的冷卻，同時，能夠個別調整各冷卻熱交換器（131, 141)的冷卻能力。【實施方式】以下，參照附圖詳細說明本發明之實施形態。本實施形態的冷凍裝置（1 〇)係設置於便利商店等，用來進行店内的空氣調和與展示植内的冷卻。如圖1所示，本實施形態的冷凍裝置（10)包括··室外機組 (11)、空調機組（12)、作為冷藏庫的冷藏展示櫃（13)、作為冷凍庫的第1與第2冷凍展示櫃（15a，15b)、以及增壓機組 (1 6)。至外機組（11)設於室外。另一方面，其他空調機組（工2) 專均為設置於便利商店等店内。室外機組（11)設有室外迴路（40)，空調機組（12)設有空調 k路（100) ’冷藏展示櫃（13)設有冷藏庫内迴路（11〇)，第^ 冷凍展不櫃（15a)設有第1冷凍庫内迴路（13〇勾，第2冷凍展示櫃（15b)設有第2冷;東庫㈣路⑽b)，增壓機組⑽設有增壓迴路（15〇卜冷凌裝置（10)以管路連接這些迴路（4〇, iOO，…）而構成冷媒迴路（20)。 104698.doc -19- 1272366 第1冷;東庫内迴路（13〇a)與第2冷凍庫内迴路（130b)互相串聯連接’進一步地第2冷凍庫内迴路（13〇b)與增壓迴路 (150)互相串聯連接。並且，第1冷凍庫内迴路（130a)、第2 冷/東庫内迴路（130b)與增壓迴路（15〇)構成冷凍迴路（3〇)。此冷来迴路（30)，在第1冷凍庫内迴路（130a)的端部設有液側封閉閥（31)，在增壓迴路（15〇)端部設有氣體側封閉閥（32)。另一方面’冷藏庫内迴路（11〇)單獨構成冷藏迴路。同時，室外迴路（40)單獨構成熱源側迴路。冷媒迴路（20)中，冷藏庫内迴路（11〇)與冷凍迴路（3 〇)對室外迴路（40)互相並聯連接。具體而言，冷藏庫内迴路（11〇) 及冷束迴路（30)經由第丨液側聯絡管路（21)及第1氣體側聯絡管路（22)連接到室外迴路（4〇)。第丨液側聯絡管路（21)的一端連接到室外迴路（40)。第1液側聯絡管路（21)的另一端分歧為二’分歧的一端連接到冷藏庫内迴路（n〇)的液側端，另一端連接到液側封閉閥（3 1)。第}氣體側聯絡管路（22)的一端連接到室外迴路（40)。第1氣體側聯絡管路（22)的另一端分歧為二，分歧的一端連接到冷藏庫内迴路（11〇)的氣體側，另一端連接到氣體側封閉閥（32)。並且，冷媒迴路（2〇)中，空調迴路（1〇〇)透過第2液側聯絡管路（23)及弟2氣體側聯絡管路（24)連接到室外迴路（4〇)。第 2液側聯絡管路（23)的一端連接到室外迴路（4〇)，另一端連接到空調迴路（100)的液側端。第2氣體側聯絡管路（24)的一端聯絡到室外迴路（40)，另一端連接到空調迴路（1〇〇)的氣體側端。 104698.doc -20- 1272366 《室外機組》如上所述，室外機組（11)，具有室外迴路（40)。在該室外迴路（40)，設有變頻壓縮機（41)、定頻壓縮機（42)、室外熱交換器（43)、接收器（44)以及室外膨脹閥。並且，在室外迴路（40)，分別設有兩個四路閥（51，52)、兩個液側封閉閥（53，55)、與兩個氣體側封閉閥（54，56)。在該室外迴路 (40)’第1液側封閉閥（53)連接第1液側聯絡管路（21)，第1 氣體側封閉閥（54)連接第1氣體側聯絡管路（22)，第2液側封閉閥（55)連接第2液側聯絡管路（23)，第2氣體側封閉閥（56) 連接第2氣體側聯絡管路（24)。 ’交頻壓細機（41)及定頻壓縮機（42)，均為全密閉型高壓圓琦型渴卷式壓縮機。變頻壓縮機（4 1)為透過變頻器供給電力。該變頻壓縮機（41)透過改變變頻器的輸出頻率來變更壓縮機馬達的旋轉速度，使其容量能夠變更。變頻壓縮機（41) 構成主壓縮機。另一方面，定頻壓縮機（42)的壓縮機馬達以一定旋轉速度運轉，其容量無法變更。變頻壓縮機（41)的吸入側連接第丨吸入管（61)的一端。第工吸入管（61)的另一端連接第1氣體側封閉閥（54)。另一方面，定頻壓縮機（42)的吸入側連接第2吸入管（62)的另一端。第2吸入管（62)的另一端連接第2四路閥（52)。並且，第 1吸入官（61)連接吸入連接管（63)的一端，第2吸入管（62)連接吸入連接管（63)的另一端。吸入連接管（63)設有僅容許冷媒從一端流向另一端的逆止閥（c1)。變頻壓縮機（41)及定頻壓縮機（42)連接吐出管（64)。吐出 104698.doc 1272366 管（6句的一端連接第丨四路閥（51)。該吐出管（64)在另一端側分歧為第1分歧吐出管（64a)與第2分歧吐出管（64b)。第j分歧吐出管（64a)連接到變頻壓縮機（41)的吐出側，第2分歧吐出官（64b)連接到定頻壓縮機（42)的吐出側。在第2分歧吐出管（64b)設有逆止閥（CV_3)，僅容許冷媒從定頻壓縮機（42) 流向第1四路閥（51)。並且，吐出管（64)連接吐出連接管（65) 的一端。吐出連接管（65)的另一端連接第2四路閥（52)。至外熱父換器（43)是板鰭管式（cross fin)的鰭管型 (fin-and-tiibe)熱交換器，構成熱源側的熱交換器。在該室外熱交換器（43)，進行冷媒與室外空氣之間的熱交換。室外熱交換器（43)的一端，透過封閉閥（57)連接第丨四路閥（51)。另一方面，室外熱交換器（43)的另一端，透過第丨液管（81) 連接到接收器（44)頂部。第1液管（81)中設有逆止閥 (CV-4)，僅谷許冷媒從室外熱交換器（43)流向接收器（44)。接收器（44)的底部透過封閉閥（58)連接第2液管（82)的一端。該第2液管（82)在另一端側分歧為第j分歧管（82a)與第2 分歧官（82b)。並且，第2液管（82)的第1分歧管（82a)連接第1 液側封閉閥（53)，其第2分歧管（82b)連接第2液側封閉閥 (55)。第2液管（82)的第2分歧管（82b)設有逆止閥（CV-5)，僅谷砟冷媒從接收器（44)流向第2液側封閉閥（55)。在第2液管（82)的第2分歧管（82b)中，逆止閥（CV-5)與第2 液側封閉閥（55)之間，連接有第3液管（83)的一端。第3液管 (83)的另一端連接到接收器（44)頂部。並且，第3液管（83) 中設有逆止閥（CV-6)，僅容許冷媒從其一端流向另一端。 104698.doc -22- 1272366 在第2液管（82)的封閉閥（58)下游連接有第4液管（84)的一端。第4液管（84)的另一端連接到第1液管（81)的室外熱交換器（43)與逆止閥（CV-4)之間。並且，在第4液管（84)設有室外膨脹閥（45)。第1四路閥（51)，分別在第1端口連接吐出管（64)、在第2 端口連接第2四路閥（52)、在第3端口連接室外熱交換器 (43)、在第4端口連接第2氣體側封閉閥（56)。此第丨四路閥 (51)能夠切換為第！狀態與第2狀態；第1狀態為第1端口與第 3端口互相聯通而第2端口與第4端口互相聯通（圖丨實線所示狀悲）’第2狀態為第1端口與第4端口互相聯通而第2端口與第3端口互相聯通（圖1虛線所示狀態）。More specifically, the first invention is based on the following refrigeration apparatus: that is, a refrigerant circuit (20) is provided, and the refrigerant circuit (20) is provided with first and second cooling heat exchangers for cooling the different compartments. (13 1,1 41 ), a compressor (4 J 104698.doc 1272366 ), and an expansion mechanism Π 32, 142); in the refrigerant circuit (20), the first and second cooling heat exchangers (131, :! 41) Connect in series. Further, in the above freezing apparatus, the expansion mechanism (132, 142) is replaced by the first! The expansion mechanism (132) and the second expansion mechanism (142) are configured, the first expansion mechanism 〇32) adjusts the pressure of the refrigerant flowing into the first cooling heat exchanger (131), and the second expansion mechanism (142) adjusts to flow into the first 2 cooling the refrigerant pressure of the heat exchanger (141); one end of the refrigerant circuit (2〇) connected to the inflow end of the expansion mechanism (132), and the other end connected to the first cooling heat exchanger (131) and the second expansion A first bypass pipe (133) having a flow rate adjusting mechanism (SV-6, 137) is provided between the mechanisms (142). In the first aspect of the invention, the refrigeration system is provided with a refrigerant circuit (2), and the refrigerant circuit (20) circulates the refrigerant to perform a vapor compression refrigeration cycle. In the refrigerant circuit (2〇), the first and second cooling heat exchangers (131, 141) in the separate cooling chamber are connected in series. Further, in the refrigerant circuit (2), first and second expansion mechanisms (丨32, 142) corresponding to the respective cooling heat exchangers (131, 141) are provided, and during the normal operation of the refrigeration system, The flow control mechanism (SV-6, 137) of the i-th bypass pipe (133) is fully closed and the third expansion mechanism (I32) is opened to a predetermined opening degree, and after the compressor (仏1S1) is compressed, The refrigerant, for example, condensed in the outer heat master exchanger, is caused to flow into the second expansion mechanism (132). At this time, the refrigerant pressure is adjusted to a predetermined pressure in response to the opening degree of the third expansion mechanism (132). The refrigerant that has been depressurized by the 帛1 expansion mechanism (j 3 2) flows through the first cold portion heat exchanger (131). In the second cooling heat exchanger, the refrigerant evaporates by the heat in the interior of the reservoir. Therefore, the second cooling heat exchanger (丨3丨) causes the inner cooling portion to reach a predetermined temperature. The refrigerant that has flowed out of the first cooling heat exchanger (131) passes through the second expansion mechanism (142). This day, in response to the opening of the second expansion mechanism 〇42), the refrigerant 104698.doc 1272366 pressure was adjusted to the specified force. The refrigerant that has been reduced in the second expansion mechanism (142) flows through the second cooling heat exchanger (141 in the second cooling heat exchanger ((4)), and the refrigerant absorbs heat from the inside of the reservoir to further evaporate. Therefore, the second cooling : The parent converter (14 1) cools the interior of the chamber to a predetermined temperature. As described above, when the i-th and second cooling heat exchangers (131, 141) are used to cool the inside of the chamber, the refrigerant is not guided. The W-pass pipe (10)) allows the refrigerant to flow through the first and second cooling heat exchangers (131, (4)). At this time, the cooling capacity of the first cooling heat exchanger (131) is adjusted by the i-th expansion mechanism (132), and the second cooling heat exchanger (141) can be adjusted by the second expansion mechanism (M2). Cold. But ability. On the other hand, in this refrigerating apparatus, if the second cooling heat exchanger (131) is not required for in-storage cooling, the flow rate adjusting mechanism (SV-6, 137) of the i-th bypass pipe 33) is turned on. When the first expansion mechanism (132) is in the fully closed state, the condensed refrigerant can be introduced into the first bypass pipe (133). Therefore, the refrigerant does not flow through the first expansion mechanism (132) and the i-th cooling heat exchanger (131), but passes through the second expansion mechanism (142). At this time, the refrigerant pressure is adjusted to a predetermined pressure in response to the opening degree of the second expansion mechanism (142). The refrigerant that has been depressurized by the second expansion mechanism (142) flows through the second cooling heat exchanger (141). In the second cooling heat exchanger (141), the refrigerant absorbs heat from the inside of the reservoir to evaporate. Therefore, the second cooling heat exchanger (141) cools the inside of the chamber to a predetermined temperature. As described above, when the first cooling heat exchanger (131) is not required to perform internal cooling, "the refrigerant can be introduced into the first bypass pipe (13 3 ), so that the refrigerant can flow only through the second cooling heat exchanger (141). ). At this time, the cooling capacity of the second cooling heat exchanger (141) can be adjusted by the second expansion mechanism (142). 104698.doc -10- 1272366 According to a second aspect of the invention, in the refrigeration apparatus of the first aspect of the invention, the bypass pipe 33) has a heat transfer portion (13 is formed and exchanged with the first cooling heat 11 (131) In the second invention, when the first cooling heat exchange 11 (131) is sufficient for cooling in the storage chamber and the bypass operation of introducing the refrigerant into the i-th bypass pipe (133), the flow through The heat of the refrigerant in the first bypass pipe (133) is transmitted to the first cold portion hot parent converter (13 U through the heat transfer portion (133a). The air in the lower temperature state flows through the first bypass pipe (133). The refrigerant is heat-transformed through the second cooling heat exchanger (131) and the heat transfer portion (133a), so that the refrigerant flowing through the first bypass pipe (133) is cooled. Therefore, only the second cooling heat exchange is performed. When the device (141) cools the inside of the store, the heat transfer portion (133) of the first bypass pipe (133) can supercool the refrigerant sent to the second cooling heat exchanger (141) (superc〇〇] [ing The third invention is based on the following refrigeration apparatus: that is, a refrigerant circuit (20) is provided, and the refrigerant circuit (20) has the first and second colds respectively cooled in the different compartments. a hot parent converter (13 1,141), a compressor (41, 151), and an expansion mechanism (132, 142), in the refrigerant circuit (2〇), the first and second cooling heat exchangers (131) And 141) connected in series. Further, in the refrigerating apparatus, the expansion mechanism 〇32, 142) is constituted by the first expansion mechanism (132) and the second expansion mechanism (142), and the first expansion mechanism (132) is adjusted. The refrigerant pressure 'the second expansion mechanism (丨42) flowing into the i-th cooling heat exchanger (丨3丨) adjusts the refrigerant pressure flowing into the second cooling heat exchanger (141); and the refrigerant circuit (2〇) is provided. a bypass pipe (133), one end of the first bypass pipe (133) is connected to the inflow end of the expansion mechanism (132), and the other end is connected to the first expansion mechanism (132) and the i-th cooling heat exchanger ( Between 131), there is a flow rate adjustment mechanism (SV-6, 13 7). 104698.doc -11 - 1272366 In the third invention described above, the structure of the refrigerant circuit (2〇) is different from that of the third invention. In the first invention, the first bypass pipe (133) constitutes the inflow end from the second inflation mechanism (132) to the cooling heat of the first working body. In the third aspect of the invention, the first bypass pipe (133) constitutes the inflow end from the expansion mechanism (132) to the expansion mechanism. The bypass pipe path of the outflow end of (132). Further, the bypass pipe (133) of the above two inventions is the same in this technical feature bypassing the second expansion mechanism (132). Here, in the normal operation of the refrigeration system, the flow control mechanism (SV_6, 137) of the first bypass pipe (133)' is fully closed, and the first expansion mechanism (132) is opened to the regulation. The opening degree causes the condensed refrigerant to flow into the second expansion mechanism (132). Therefore, similarly to the first invention, the refrigerant can flow through the second and second cooling heat exchangers (131, 141), and the expansion mechanism (132, 142) corresponding to each of the cooling heat exchangers (131, 141) can be used. ) to adjust the cooling capacity of the two cooling heat exchangers (131, 141). ❿ On the other hand, in this refrigeration system, when the first cooling heat exchanger (131) is not required to perform internal cooling, the flow rate adjusting mechanism of the first bypass pipe (1 33) is opened (SV-6, 137). The first expansion mechanism (132) is fully closed, and the condensed refrigerant can be introduced into the first bypass pipe (13 3 ). Therefore, the refrigerant does not flow through the first expansion mechanism (132), but flows through the first cooling heat exchanger (131) without being decompressed. Therefore, in the first cooling heat exchanger (131), the refrigerant does not evaporate, but exchanges heat with the air in the lower temperature state to perform cooling. In other words, in the first cooling heat exchanger (131), supercooling of the refrigerant can be performed. The refrigerant that has flowed out of the first cooling heat exchanger (13 1) passes through the second expansion mechanism 104698.doc -12-1272366 (142). At this time, the pressure of the refrigerant is adjusted to a predetermined pressure in response to the opening degree of the second expansion mechanism (142). The refrigerant that has been depressurized by the second expansion mechanism (142) flows through the second cooling heat exchanger (141). In the second cooling heat exchanger (141), the refrigerant absorbs heat from the inside of the reservoir and evaporates. Therefore, the second cooling heat exchanger (141) cools the inside of the chamber to a predetermined temperature. As described above, when the first cooling heat exchanger (131) is not required to be cooled during operation, the refrigerant can be introduced into the first bypass heat exchanger (131) by introducing the refrigerant into the first bypass pipe (13 3 ). The refrigerant is sent to the second cooling heat exchanger (141) without evaporating. Therefore, in addition to the internal cooling of the second cooling heat exchanger (141), the cooling capacity of the second cooling heat exchanger (14 1) can be adjusted by the second expansion mechanism (142). At this time, since the refrigerant is supercooled in the first cooling heat exchanger (131), the cooling capacity of the second cooling heat exchanger (14 1) can be improved. According to a fourth aspect of the invention, in the refrigeration system according to any one of the first to third aspects of the present invention, the refrigerant circuit (20) is provided with a second bypass pipe (143), and one end of the second bypass pipe (143) is connected to the first The inflow end and the other end of the expansion mechanism (142) are connected to the outflow end of the second cooling heat master (141), and have a flow rate adjusting mechanism (SV-6, 137). In the fourth aspect of the invention, the second bypass valve (143) similar to the first bypass pipe (133) is provided as a bypass pipe path of the second cooling heat exchanger (141). Therefore, when the second cooling heat exchanger (4 丨) is not required to be cooled, only the refrigerant w can pass through the first cooling heat exchanger (13 1 ), and the first expansion mechanism (132) can be adjusted. 1 Cooling capacity of the cooling heat exchanger (131). According to a fifth aspect of the invention, in the refrigerating apparatus according to any one of the fourth to fourth inventions, the flow control mechanism is a switch solenoid controller (sv_ illusion). A solenoid valve (SV-6) is provided as a flow rate adjusting mechanism of the i-th bypass pipe (133) or the second bypass pipe (143). The switching operation of the electromagnetic valve (SV-6) can be performed by & The switching of the bypass operation in the bypass pipe "n, 丨 43) is simply performed. In the cold rolling device according to any one of the first to fourth aspects of the invention, the flow control mechanism is constituted by an electric valve (137) having a variable opening degree. In the sixth invention, the electric valve (137) is provided as the first! A flow regulating mechanism of the bypass pipe (133) or the second bypass pipe (143). Therefore, by switching the electric valve (137) to the fully closed state or the fully open state, the bypass operation of the bypass pipe (iM, 143) can be performed. Further, by adjusting the opening degree of the electric valve (137) to a predetermined opening degree, it is also possible to adjust the flow rate of the refrigerant passing through the bypass pipes (133, 143) and to flow through the cold heat exchanger without bypassing the bypass pipes 033, 143). (1) 丨, (4)) The distribution ratio of the refrigerant flow rate. Therefore, it is also possible to adjust the flow rate of the refrigerant flowing through each of the cooling heat exchangers (131, "" to adjust the cooling capacity flowing through the cooling heat exchangers (131, 141). The seventh invention is: in the sixth to sixth In the refrigerating apparatus of the present invention, the compressor (4, 151) is composed of a main compressor (41) and a sub-compressor (151), and the refrigerant circuit (2) is connected in parallel with the refrigerating circuit (3) by the refrigerating circuit (110). It is connected to a heat source side circuit (4〇) having a main compressor (41) having a refrigerating heat exchanger (111) in a cooling refrigerator, the refrigerating circuit (3〇) having The second and second cooling heat exchangers (13, 14 1) in the second and second cooling heat exchangers in the separate freezer are separately cooled. 104698.doc -14- I272366 The refrigerating circuit (11〇) on the segment side is connected in parallel to the heat source side circuit (4〇) in parallel with the freezing circuit (30) on the lower side, and constitutes a so-called two-nuclear compression type refrigerant circuit (20). Freezing circuit (3〇), first and second cooling heat exchangers (first and second freezing heat exchangers) 131, 141) are connected in series, and the second and second cooling heat exchangers (131, 141) cool the inside of the freezer. Therefore, only one of the bypass pipes (133, 143) can be bypassed. Cooling the heat exchanger to cool the freezer. At the same time, the cooling capacity of each of the cooling heat exchangers (131, 141) is adjusted by the expansion mechanisms (132, 142) corresponding to the cooling heat exchangers (131, 141). According to the first aspect of the invention, in the normal operation of cooling the inside of the first and second cooling heat exchangers (131, 141), the refrigerant can flow without passing through the second bypass pipe (133). Both the first cooling heat exchanger (131) and the second cooling heat exchanger (141) pass through. Here, the refrigerant passes through the first expansion mechanism (132) before flowing into the first cooling heat exchanger (131). By adjusting the opening degree of the second expansion mechanism (132) to the predetermined opening degree adjustment, the cooling capacity of the second cooling heat exchanger (13 1) can be adjusted. Similarly, the refrigerant flows into the second cooling heat exchanger (141). Then, the second expansion mechanism (142) is passed. Therefore, the second expansion mechanism can be adjusted. The opening degree of (142) adjusts the cooling capacity of the second cooling heat exchanger (141). Further, according to the present invention, when the first cooling heat exchanger (丨3丨) is sufficient for cooling in the storage chamber, the first When the cooling heat exchanger (3丨) is cooled in the interior, the refrigerant can flow through the second cooling heat exchanger (141) through the first bypass pipe (133). Therefore, the first cooling heat exchange can be avoided. The device (131) performs the cooling of the excess 104698.doc -15 - 1272366. In the refrigerant circuit (2〇) in which the first cold portion heat exchanger (131) and the second cooling heat exchanger (141) are connected in series, When the normal operation as described above is performed, the cold portion heat capacity of the second cooling heat exchanger (m) located on the upstream side of the second cooling heat exchanger (141) tends to be higher. Therefore, in the interior of the store where the first cooling heat exchange and - (131) are provided, it is easier to cool the inside of the store than the heat exchanger ((4)). Therefore, during the normal operation, the first cooling is likely to occur. The heat capacity of the heat exchanger (131) is excessive and the cooling capacity of the second cooling heat exchanger ο" is insufficient. <On the other hand, according to the present invention, the in-compartment cooling of the first cooling heat master (丨3丨) is stopped by the bypass operation of the first bypass pipe (133) so that only the second cold portion is provided The hot parent converter (141) performs in-house cooling, so that the plurality of banks can be efficiently cooled. Further, according to the present invention, the refrigerant passes through the second expansion mechanism 〇42) before flowing into the second cooling heat exchanger (141) during the bypass operation of the first bypass pipe (133). Therefore, the opening degree of the second expansion mechanism (142) can be adjusted to adjust the cooling capacity of the second cooling heat exchanger (141). According to the second invention described above, the heat transfer portion of the first heat transfer unit (133) of the first bypass pipe (133) is brought into contact with the heat transfer pipe of the first cooling heat exchanger (131). Therefore, when the refrigerant is introduced into the bypass pipe (133) of the brother 1, it will flow through the first! The heat of the refrigerant in the bypass pipe 33) is transferred to the =1 cold portion heat exchanger (i 3 丨) to perform supercooling of the refrigerant. Therefore, when the in-tank cooling is performed only by the first cooling heat master (141), the cooling capacity of the second cooling heat master (14 1) can be improved. In particular, when the normal operation is performed in the refrigerant circuit (20) in which the first cooling heat exchanger (131) and the second cooling heat exchanger 104698.doc -16 - 1272366 (141) are connected in series, as described above, the second The refrigeration capacity of the cooling heat exchanger (141) tends to be insufficient. According to the present invention, it is possible to quickly cancel the cold of the second cooling heat exchange state (14 1) via the supercooling of the refrigerant; Further, when moisture in the air adheres to the first cooling heat exchanger (131) and is frosted, the first cooling heat exchanger can be used by the heat of the refrigerant flowing through the first bypass pipe (1 33). Defrost of (131). According to the third aspect of the invention, in the normal operation of cooling the storage chamber by the first and second cooling heat exchangers (131, 141), the refrigerant can flow through the two cooling heat exchangers without passing through the second bypass pipe (133). (13 1,14 1). Further, the freezing ability of the second and second cooling heat exchangers (13, 141) can be adjusted by the expansion mechanisms (132, 142) corresponding to the respective cooling heat exchangers (131, 141). Meanwhile, according to the present invention, when the second cooling heat exchanger (131) is not required to perform internal cooling, the refrigerant can be introduced into the i-th bypass pipe (133), so that the first expansion mechanism (132) can be decompressed. And flowing through the second cooling heat exchanger (13 1). Therefore, the first cooling heat exchanger (131) does not perform internal cooling, but only performs cooling in the interior of the second cooling heat exchanger (141). Therefore, unnecessary cooling in the first cooling heat exchanger (131) can be avoided. At this time, since the refrigerant passes through the second expansion mechanism (142) before flowing into the second cooling heat exchanger (141), the opening degree of the second expansion mechanism (142) can be adjusted to adjust the first heat exchanger (14 1). Cooling capacity. Further, according to the present invention, when the first cooling heat exchanger (131) is not required to perform in-storage cooling, the refrigerant introduced into the bypass pipe (133) flows through the monument heat exchanger (131). In the first cooling heat exchanger 031), the supercooling of the refrigerant of 104698.doc 1272366 is performed. Therefore, the cooling capacity of the second cooling heat exchanger (i4i) can be improved. In particular, when the normal operation is performed in the refrigerant circuit (2〇) in which the first cooling heat exchanger (131) and the second cooling heat exchanger (141) are connected in series, as described above, the second cooling heat exchanger ( In the case of 141), the freezing ability tends to be insufficient. However, according to the present invention, it is possible to quickly cancel the shortage of the cold-cooling ability of the second cooling heat master and (14 1) by the supercooling of the refrigerant. Further, the heat transfer pipe of the first cooling heat exchanger (131) is heated from the inside through the refrigerant flowing through the first cooling heat exchanger (131), whereby the defrosting of the first cooling heat exchanger (13 1) can be effectively performed. . According to the fourth invention described above, the second bypass pipe (143) is provided as a bypass pipe path of the second cold portion hot parent converter (141). Therefore, for example, when the second cooling heat exchanger (141) is not interrupted during heat exchange, when the second cooling heat exchanger (141) is not required to perform internal cooling, only the refrigerant can be passed through the second cooling heat exchange. The heater (131) only performs internal cooling of the first cooling heat exchanger (131). Further, at this time, the cooling capacity of the i-th cooling heat exchanger (13 1) can be adjusted by the first expansion mechanism (132). According to the fifth invention described above, the electromagnetic valve (SV-6) is used as the flow rate adjusting mechanism of the bypass pipe (1, 33, 143). Therefore, the bypass operation of the bypass pipes (133, 143) can be switched with a simple configuration. According to the sixth invention described above, the electric valve (137) is used as the flow rate adjusting mechanism of the bypass pipes (133, 143). Therefore, by adjusting the opening degree of the electric valve (137) to a predetermined opening degree adjustment, it is possible to adjust the flow rate of the refrigerant passing through the bypass pipe (133, 143) and to flow without bypassing the bypass pipe (133, 143). The distribution ratio of the refrigerant flow rate of the supercooling heat exchanger 104698.doc 1272366 (1 3 1,14 1). Therefore, the cooling capacity of the first cooling heat exchanger (131) and the second cooling heat exchanger (141) can be adjusted by adjusting the opening degree of the electric valve (137). According to the seventh aspect of the invention, in the two-stage compression type refrigerant circuit (20), the refrigeration circuit (3 成为) which is the low stage side is provided in series as the first! The first and sixth cooling heat exchangers (131, 141) of the second cooling heat exchanger are applied to the first to sixth inventions. Therefore, in this refrigeration system, the cooling in the freezer can be performed only by the necessary cooling heat exchangers (131, 141), and the cooling capacity of each of the cooling heat exchangers (131, 141) can be individually adjusted. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The refrigerating apparatus (1) of the present embodiment is installed in a convenience store or the like to perform air conditioning in the store and cooling in the display plant. As shown in Fig. 1, the refrigeration system (10) of the present embodiment includes an outdoor unit (11), an air conditioning unit (12), a refrigerating display case (13) as a refrigerator, and first and second freezing as a freezer. Display cabinets (15a, 15b), and booster units (16). The external unit (11) is located outdoors. On the other hand, other air-conditioning units (Work 2) are all installed in convenience stores and other stores. The outdoor unit (11) is equipped with an outdoor circuit (40), and the air conditioning unit (12) is equipped with an air-conditioned k-way (100). The refrigerated display cabinet (13) is equipped with an internal circuit (11〇) in the refrigerator. (15a) There is a first freezer internal circuit (13 〇 hook, the second freezer display case (15b) is equipped with a second cold; the east bank (four) road (10) b), and the booster unit (10) is provided with a booster circuit (15 〇冷 cold The slewing device (10) is connected to the circuits (4〇, iOO, ...) to form a refrigerant circuit (20) 104698.doc -19- 1272366 1st cold; East Cune circuit (13〇a) and 2nd The freezer inner circuit (130b) is connected in series to each other. Further, the second freezer inner circuit (13〇b) and the booster circuit (150) are connected in series to each other. The first freezer inner circuit (130a) and the second cold/east bank The inner circuit (130b) and the booster circuit (15〇) constitute a refrigeration circuit (3〇). The cold circuit (30) is provided with a liquid side closing valve (31) at the end of the first freezer inner circuit (130a). A gas side closing valve (32) is provided at the end of the pressure increasing circuit (15 〇). On the other hand, the 'refrigerator internal circuit (11 〇) separately constitutes a refrigerating circuit. Meanwhile, the outdoor circuit 40) The heat source side circuit is separately configured. In the refrigerant circuit (20), the internal circuit (11〇) of the refrigerator and the refrigeration circuit (3〇) are connected in parallel to the outdoor circuit (40). Specifically, the internal circuit of the refrigerator (11) 〇) and the cold beam loop (30) are connected to the outdoor circuit (4〇) via the second liquid side communication line (21) and the first gas side communication line (22). The third liquid side communication line (21) One end is connected to the outdoor circuit (40). The other end of the first liquid side communication line (21) is divided into two divergent ends connected to the liquid side end of the inner circuit (n〇) of the refrigerator, and the other end is connected to the liquid. a side closing valve (3 1). One end of the first gas side communication line (22) is connected to the outdoor circuit (40). The other end of the first gas side communication line (22) is divided into two, and the divergent end is connected to The gas side of the inner circuit (11〇) of the refrigerator is connected to the gas side closing valve (32). In the refrigerant circuit (2〇), the air conditioning circuit (1〇〇) passes through the second liquid side communication line ( 23) The second gas side communication line (24) is connected to the outdoor circuit (4〇). One end of the second liquid side communication line (23) is connected. To the outdoor circuit (4〇), the other end is connected to the liquid side end of the air conditioning circuit (100). One end of the second gas side communication line (24) is connected to the outdoor circuit (40), and the other end is connected to the air conditioning circuit (1) 698) Gas side end 104698.doc -20- 1272366 "Outdoor unit" As mentioned above, the outdoor unit (11) has an outdoor circuit (40). In the outdoor circuit (40), an inverter compressor is provided ( 41), a fixed frequency compressor (42), an outdoor heat exchanger (43), a receiver (44), and an outdoor expansion valve. Further, in the outdoor circuit (40), two four-way valves (51, 52), two liquid-side closing valves (53, 55), and two gas-side closing valves (54, 56) are provided, respectively. The first liquid side closing valve (53) is connected to the first liquid side communication line (21) in the outdoor circuit (40), and the first gas side closing valve (54) is connected to the first gas side communication line (22). The second liquid side closing valve (55) is connected to the second liquid side communication line (23), and the second gas side closing valve (56) is connected to the second gas side communication line (24). The AC frequency crusher (41) and the fixed frequency compressor (42) are fully enclosed high-pressure round-type thirsty compressors. The inverter compressor (4 1) supplies power through the inverter. The inverter compressor (41) changes the rotational speed of the compressor motor by changing the output frequency of the inverter, so that the capacity can be changed. The inverter compressor (41) constitutes the main compressor. On the other hand, the compressor motor of the fixed frequency compressor (42) is operated at a constant rotational speed, and its capacity cannot be changed. The suction side of the inverter compressor (41) is connected to one end of the second suction pipe (61). The other end of the suction pipe (61) is connected to the first gas side closing valve (54). On the other hand, the suction side of the fixed frequency compressor (42) is connected to the other end of the second suction pipe (62). The other end of the second suction pipe (62) is connected to the second four-way valve (52). Further, the first suction officer (61) is connected to one end of the suction connection pipe (63), and the second suction pipe (62) is connected to the other end of the suction connection pipe (63). The suction connection pipe (63) is provided with a check valve (c1) that allows only the refrigerant to flow from one end to the other end. The inverter compressor (41) and the fixed frequency compressor (42) are connected to the discharge pipe (64). Discharge 104698.doc 1272366 tube (one end of the six sentences is connected to the fourth four-way valve (51). The discharge tube (64) is divided into the first divergent discharge tube (64a) and the second divergent discharge tube (64b) on the other end side. The jth branch discharge pipe (64a) is connected to the discharge side of the inverter compressor (41), and the second branch discharge commander (64b) is connected to the discharge side of the fixed frequency compressor (42). The second branch discharge pipe (64b) ) A check valve (CV_3) is provided to allow only the refrigerant to flow from the fixed frequency compressor (42) to the first four-way valve (51), and the discharge pipe (64) is connected to one end of the discharge connection pipe (65). The other end of the tube (65) is connected to the second four-way valve (52). The outer heat-replacer (43) is a cross-fin fin-and-tiibe heat exchanger. The heat exchanger on the heat source side is configured to exchange heat between the refrigerant and the outdoor air in the outdoor heat exchanger (43). One end of the outdoor heat exchanger (43) is connected to the fourth passage through the closing valve (57). Valve (51) On the other hand, the other end of the outdoor heat exchanger (43) is connected to the top of the receiver (44) through the first liquid pipe (81). The first liquid pipe (81) A check valve (CV-4) is provided, and only the refrigerant flows from the outdoor heat exchanger (43) to the receiver (44). The bottom of the receiver (44) is connected to the second liquid pipe through the closing valve (58) (82). One end of the second liquid pipe (82) is divided into a j-th branch pipe (82a) and a second branch pipe (82b) on the other end side, and a first branch pipe (82a) of the second liquid pipe (82) The first liquid side closing valve (53) is connected, the second branch pipe (82b) is connected to the second liquid side closing valve (55), and the second branch pipe (82b) of the second liquid pipe (82) is provided with a backstop. In the valve (CV-5), only the gluten refrigerant flows from the receiver (44) to the second liquid side closing valve (55). In the second branch pipe (82b) of the second liquid pipe (82), the check valve ( An end of the third liquid pipe (83) is connected between the CV-5) and the second liquid side closing valve (55), and the other end of the third liquid pipe (83) is connected to the top of the receiver (44). A check valve (CV-6) is provided in the third liquid pipe (83) to allow only the refrigerant to flow from one end to the other end. 104698.doc -22- 1272366 Closing valve (58) in the second liquid pipe (82) One end of the fourth liquid pipe (84) is connected downstream, and the other end of the fourth liquid pipe (84) is connected to the chamber of the first liquid pipe (81) The outer heat exchanger (43) is connected to the check valve (CV-4), and the fourth liquid pipe (84) is provided with an outdoor expansion valve (45). The first four-way valve (51) is respectively in the first One port is connected to the discharge pipe (64), the second port is connected to the second four-way valve (52), the third port is connected to the outdoor heat exchanger (43), and the fourth port is connected to the second gas-side closing valve (56). . This third-way valve (51) can be switched to the first! The first state is that the first port and the third port are in communication with each other, and the second port and the fourth port are connected to each other (the solid line shows a sadness). The second state is the first port and the fourth port. The ports are in communication with each other and the second port and the third port are in communication with each other (the state shown by the dotted line in Fig. 1).

第2四路閥（52)，分別在第1端口連接吐出連接管（65)、在第2端口連接第2吸入管（62)、在第4端口連接第1四路閥ο” 的第2端口。並且，第2四路闊（52)的第3端口被封住。因此，第2四路閥實際上用來作為三門閥。第2四路閥（52)能夠切換為第1狀態與第2狀態；第丨狀態為第丨端口與第3端口互相聯通而第2端口與第4端口互相聯通（圖！實線所示狀態卜第2 狀態為第1端口與第4端口互相聯通而第2端口與第3端口互相聯通（圖1虛線所示狀態）。在室外迴路（40)設有油分離器（70)、回油管（71)、、、主 — (85)、以及連通管（87)。並且，在室外迴路（4〇)，分別設= 兩個均油管（72, 73)與兩個吸入側管路（66, 67)。叹胃油分離器⑽設於吐出管（64)。該油分離器⑽u _ 壓縮機（41，42)的吐出氣體中分離冷凍油。〆田刀離裔（7〇)連 104698.doc -23- 1272366 接了回油管（71)的一端。回油管（71)的另一端連接到第’1吸入管（61)。並且，在回油管（71)設有電磁閥（SV-5)。電磁閥 (SV-5)—旦開啟，在油分離器（70)被分離的冷凍油將被送回變頻壓縮機（41)的吸入側。第1均油管（72)的一端連接到變頻壓縮機（41)，另一端連接到第2吸入管（62)。在第1均油管（72)設有電磁閥（SV-1)。另一方面，第2均油管（73)的一端連接到定頻壓縮機（42)，另一端連接第1吸入管（61)。在第2均油管（73)設有電磁閥 (SV-2)。經由適當地開關電磁閥（sv-1，SV-2)使得各壓縮機 (41，42)的冷凍油存積量得以平均化。第1吸入側管路（66)的一端連接第2吸入管（62)，另一端連接第1吸入管（61)。在第1吸入側管路（66)，從其一端向另一端依序設有電磁閥（SV-3)與逆止閥（CV-2)。該逆止閥（Cv_2) 僅容許冷媒從第1吸入側管路（66)一端流向另一端。另一方面，第2吸入側管路（67)連接第丨吸入側管路（66)的電磁閥 (SV-3)兩側。在第2吸入側管路（67)設有電磁閥（sv_4)。注入官（85)是用來進行液注入。注入管（85)的一端經由封閉閥（59)連接到第4液管（84)，另一端連接第丨吸入管（6ι)。注入官設有開度可變的流量調節閥（86)。在注入管（85) 的封閉閥（59)與流量調節閥（86)之間，連接連通管（8乃的一端。連通管（87)的另-端連接到回油管（71)的油分離器⑺）與電磁閥(SV-5)之間。在連通管(87) &有逆止閥(cv_”，僅容許冷媒從一端流向另一端。在室外迴路（40)也設有各種感測器與壓力開關。具體而 104698.doc -24- 1272366 言’在第1吸入管（61)設有第1吸入溫度感測器（91)與第1吸入壓力感測器（93)。在第2吸入管（62)設有第2吸入溫度感測器（92)與第2吸入壓力感測器（94)。在吐出管（64)設有吐出溫度感測器（96)與吐出壓力感測器（97)。在第1、第2吐出分歧管（64a，64b)分別設有高壓壓力開關（95)。並且’在室外機組（11)設有外部溫度感測器（9〇)與室外風扇（48)。經由室外風扇（48)將室外空氣送到室外熱交換器 (43) 〇《空調機組》如上所述’空調機組（12)具備空調迴路（100)。空調迴路 (100)，從液側向著氣體側依序設有空調膨脹閥（1〇2)與空調熱父換器（101)。空调熱交換器（101)由板縛管式的鰭管型熱交換器所構成。在空調熱交換器（丨〇丨）進行冷媒與室内空氣之間的熱交換。另一方面，空調膨脹閥（102)由電子膨脹閥所構成。在空調機組（12)設有熱交換器溫度感測器（1〇3)與冷媒溫度感測器（104)。熱交換器溫度感測器（1〇3)安裝於空調熱交換(101)的導熱管。冷媒溫度感測器（1〇4)安裝於空調迴路 (100)的氣體側附近。同時，在空調機組（12)設有内部溫度感測器（106)與空調風扇〇5)。經由空調風扇（1〇5)將店内室内空氣送到空調熱交換器（丨〇丨）。《冷藏展示櫃》如上所述，冷藏展示櫃（13)具有冷藏庫内迴路（11〇)。在、♦藏庫内k路（11G) ’ &液側端向著氣體侧端依序設有冷藏 104698.doc -25- 1272366 膨脹閥（112)與冷藏熱交換器⑴υ。冷藏熱交換器（⑴）是板鰭管式的縛管型熱交換器，構成第1熱交換ϋ。纟冷藏熱& 換器（111)進行冷媒與庫内空氣之間的熱交換。另_方面，冷藏知脹閥（112)由電子膨脹閥構成。冷藏展不櫃（13)設有熱交換器溫度感測器（113)與冷媒溫度感測器（114)。熱交換器溫度感測器⑴3)安裝於冷藏熱交換器（111)的導熱管。冷媒溫度感測器⑴4)被安裝在冷藏庫内迴路（11G)的氣體側附近。並且，在冷藏展示櫃⑼設有冷藏庫内溫度感測器（116)與冷藏庫内風扇（115)。冷藏展示櫃（13)的庫内空氣經由冷藏庫内風扇⑴5)被送到冷藏熱交換器（111)。《冷凍展示櫃》冷凍展示櫃由第1與第2冷凍展示櫃（15a，15b)所構成。並且在第1冷凍展示櫃（158)具有第1冷凍庫内迴路（13〇&)，在第2冷/東展示櫃（15b)具有第2冷涞庫内迴路（丨3〇b)。在第1冷凍庫内迴路（130a)，從液側端向著氣體側端依序設有第1冷凍膨脹閥（第丨膨脹機構）（132)、第丨冷凍熱交換器 (131)、冷媒溫度感測器（134)、以及逆止閥（cv_8)。第1冷凍熱父換裔（131)是板鰭管式的鰭管型熱交換器，構成第j 冷卻熱父換器。該第i冷凍熱交換器（131)進行冷媒與庫内空亂之間的熱交換。另一方面，第丨冷凍膨脹閥（132)由電子膨脹閥所構成。並且，第！冷凍膨脹閥（132)調整流入第丄冷凍熱父換器（131)的冷媒壓力。並且，在第i冷凍展示櫃（15b) 設有第1冷來庫内溫度感測器（136)與第1冷凍庫内風扇 104698.doc 1272366 (135)。經由第〗冷凍庫内風扇（135)將第1冷凍展示櫃〇5a) 的庫内空氣送到第1冷凍熱交換器（131)。在第2冷涞庫内迴路（丨3 〇b)，從液側端向著氣體側端依序設有第2冷凍膨脹閥（第2膨脹機構）（142)、第2冷凍熱交換器 (141)、以及冷媒溫度感測器（144)。第2冷凍熱交換器（141) 是板鰭管式的鰭管型熱交換器，構成第2冷卻熱交換器。該第2冷猿熱交換器（141)進行冷媒與庫内空氣之間的熱交換。另一方面，第2冷凍膨脹閥（142)由電子膨脹閥所構成。並且’第2冷凍膨脹閥（142)調整流入第2冷凍熱交換器（141) 的冷媒壓力。並且，在第2冷凍展示櫃（15b)設有第2冷凍庫内溫度感測器（146)與第2冷凍庫内風扇（145)。經由第2冷凍庫内風扇（145)將第2冷柬展示櫃（15b)的庫内空氣送到第2 冷凍熱交換器（141)。並且’在上述第1冷凍庫内迴路（13〇a)設有第1旁通管 (133)’第1旁通管（133)使即將流入第1冷凍膨脹閥（132)的冷媒繞過第1冷凍熱交換器（13 1)下流側。第1旁通管（丨33)的一端連接到第1冷康膨脹閥（132)的流入端，另一端連接到第1 冷凍熱交換器（131)與第2冷凍膨脹閥（142)之間。在此一第i 旁通管（13 3) ό又有開關自在的電磁閥（§ v - 6 )，來作為流量調整機構。並且，上述逆止閥（CV-8)僅容許冷媒從第i冷凍熱交換器（131)的流出端流向第1旁通管（133)的另一端。《增壓機組》如上所述，增壓機組（16)具有增壓迴路（1 50)。在增壓迴路（150)設有增壓壓縮機（151)。 104698.doc -27- 1272366 增壓壓機（1 5 1)是全雄、閉型面壓圓筒型渴卷式壓縮機。增壓壓縮機（151)透過變頻器來供給電力。該增壓壓縮機 (15 1)，經由改變變頻器的輸出頻率來變更壓縮機馬達的旋轉速度，使其容量能夠改變。增壓壓縮機（151)構成副壓縮機。增壓壓縮機（151)的吸入側連接吸入管（154)，其吐出側連接吐出管（155)的一端。吸入管（154)的另一端連接第2冷康庫内迴路（130b)的氣體側端。另一方面，吐出管（155)的另一端連接氣體側封閉閥（32)。在該吐出管（155)，設有吐出溫度感測器（152)與高壓壓力開關（153)。《控制器的結構》本實施形態的冷凍裝置（10)具有控制器（2〇〇)。該控制器 (200)係因應運轉條件進行各四㈣與各電關等的控制動作0 一運轉動作一The second four-way valve (52) is connected to the discharge connection pipe (65) at the first port, the second suction pipe (62) at the second port, and the second four-way valve ο" at the fourth port. Port, and the third port of the second four-way wide (52) is sealed. Therefore, the second four-way valve is actually used as a three-valve valve. The second four-way valve (52) can be switched to the first state and The second state; the second state is that the second port and the third port are in communication with each other, and the second port and the fourth port are connected to each other (Fig.! The state indicated by the solid line. The second state is that the first port and the fourth port are in communication with each other. The second port and the third port are in communication with each other (the state shown by the broken line in Fig. 1). The outdoor circuit (40) is provided with an oil separator (70), a return pipe (71), a main port (85), and a communication pipe. (87) Also, in the outdoor circuit (4〇), respectively, = two oil pipes (72, 73) and two suction side pipes (66, 67). The sigh gas separator (10) is provided in the discharge pipe ( 64) The oil separator (10) u _ Compressor (41, 42) is separated from the refrigerant gas. The 〆田刀分生(7〇) even 104698.doc -23- 1272366 is connected to the return pipe (71) The other end of the return pipe (71) is connected to the first suction pipe (61), and a solenoid valve (SV-5) is provided at the oil return pipe (71). The solenoid valve (SV-5) is turned on, The refrigerating oil separated in the oil separator (70) will be sent back to the suction side of the inverter compressor (41). One end of the first oil equalizing pipe (72) is connected to the inverter compressor (41), and the other end is connected to the second. Suction pipe (62). Electromagnetic valve (SV-1) is provided in the first oil equalizing pipe (72). On the other hand, one end of the second oil equalizing pipe (73) is connected to the fixed frequency compressor (42), and the other end is connected. a first suction pipe (61). A solenoid valve (SV-2) is provided in the second oil equalizing pipe (73). Each compressor (41, 42) is appropriately opened and closed by a solenoid valve (sv-1, SV-2). The amount of frozen oil stored is averaged. One end of the first suction side line (66) is connected to the second suction pipe (62), and the other end is connected to the first suction pipe (61). The first suction side pipe (66) ), a solenoid valve (SV-3) and a check valve (CV-2) are sequentially provided from one end to the other end. The check valve (Cv_2) only allows the refrigerant to pass from the first suction side pipe (66) end Flow to the other end. On the other hand, the second suction side tube (67) Both sides of the solenoid valve (SV-3) connected to the suction side line (66) of the second side are provided. A solenoid valve (sv_4) is provided in the second suction side line (67). The injection officer (85) is used The liquid injection is performed. One end of the injection pipe (85) is connected to the fourth liquid pipe (84) via a closing valve (59), and the other end is connected to the third suction pipe (6ι). The injection officer is provided with a variable flow rate regulating valve. (86) Connect one end of the communication pipe (8) between the closing valve (59) of the injection pipe (85) and the flow regulating valve (86). The other end of the communication pipe (87) is connected between the oil separator (7) of the oil return pipe (71) and the solenoid valve (SV-5). In the connecting pipe (87) & there is a check valve (cv_", only the refrigerant is allowed to flow from one end to the other end. In the outdoor circuit (40), various sensors and pressure switches are also provided. Specifically, 104698.doc -24- 1272366 "The first suction temperature sensor (91) and the first suction pressure sensor (93) are provided in the first suction pipe (61). The second suction temperature sensor is provided in the second suction pipe (62). a detector (92) and a second suction pressure sensor (94). The discharge tube (64) is provided with a discharge temperature sensor (96) and a discharge pressure sensor (97). The first and second discharges are performed. The manifolds (64a, 64b) are respectively provided with a high pressure switch (95), and 'the outdoor unit (11) is provided with an external temperature sensor (9 〇) and an outdoor fan (48). The outdoor fan (48) will be Outdoor air is sent to the outdoor heat exchanger (43) 〇 "Air conditioning unit" As mentioned above, the air conditioning unit (12) is equipped with an air conditioning circuit (100). The air conditioning circuit (100) is provided with air conditioning expansion from the liquid side to the gas side. The valve (1〇2) and the air conditioner heat exchanger (101). The air conditioner heat exchanger (101) is composed of a plate-fitting fin-type heat exchanger. The converter (丨〇丨) performs heat exchange between the refrigerant and the indoor air. On the other hand, the air conditioning expansion valve (102) is composed of an electronic expansion valve. The air conditioning unit (12) is provided with a heat exchanger temperature sensor. (1〇3) and refrigerant temperature sensor (104). The heat exchanger temperature sensor (1〇3) is installed in the heat pipe of the air conditioning heat exchange (101). The refrigerant temperature sensor (1〇4) is installed. In the air conditioning circuit (100) near the gas side. At the same time, the air conditioning unit (12) is provided with an internal temperature sensor (106) and an air conditioning fan 〇 5). The indoor air is sent to the store via an air conditioning fan (1〇5) Air-conditioning heat exchanger (丨〇丨). “Refrigerated display cabinet” As mentioned above, the refrigerated display cabinet (13) has a circuit (11〇) in the refrigerator. In the _ library, the road (11G) ' & The side end is provided with a refrigerating 104698.doc -25-1272366 expansion valve (112) and a refrigerating heat exchanger (1) 向 toward the gas side end. The refrigerating heat exchanger ((1)) is a plate fin type sealed tube type heat exchanger, The first heat exchange crucible is formed. The refrigerating heat & converter (111) exchanges heat between the refrigerant and the air in the reservoir. _ Aspect, the refrigerated expansion valve (112) is composed of an electronic expansion valve. The refrigerating display cabinet (13) is provided with a heat exchanger temperature sensor (113) and a refrigerant temperature sensor (114). The detector (1) 3) is mounted on a heat pipe of the refrigerating heat exchanger (111). The refrigerant temperature sensor (1) 4) is installed near the gas side of the refrigerator internal circuit (11G), and a refrigerator is provided in the refrigerating display case (9). An internal temperature sensor (116) and a refrigerator (115) in the refrigerator. The air in the refrigerator of the refrigerating display cabinet (13) is sent to the refrigerating heat exchanger (111) via the refrigerator (1) 5). "Frozen display case" The freezer display case consists of the first and second refrigerated display cases (15a, 15b). Further, the first freezer display case (158) has a first freezer internal circuit (13〇&), and the second cold/east display case (15b) has a second cold storage internal circuit (丨3〇b). In the first freezer inner circuit (130a), a first refrigerating expansion valve (third expansion mechanism) (132), a second refrigeration heat exchanger (131), and a refrigerant temperature sense are sequentially provided from the liquid side end toward the gas side end. The detector (134) and the check valve (cv_8). The first cold-heated father (131) is a fin-and-tube fin-type heat exchanger that constitutes the j-th cooling hot-family changer. The i-th refrigeration heat exchanger (131) exchanges heat between the refrigerant and the interior of the storage. On the other hand, the second refrigeration expansion valve (132) is composed of an electronic expansion valve. And, the first! The refrigerating expansion valve (132) adjusts the refrigerant pressure flowing into the second freezing heat master (131). Further, the i-th refrigerating display case (15b) is provided with a first cold-in-compartment temperature sensor (136) and a first refrigerating-storage inner fan 104698.doc 1272366 (135). The in-compartment air of the first refrigerating display case 〇 5a) is sent to the first refrigerating heat exchanger (131) via the first freezer fan (135). In the second cold heading inner circuit (丨3 〇b), a second refrigerating expansion valve (second expansion mechanism) (142) and a second refrigerating heat exchanger (141) are sequentially provided from the liquid side end toward the gas side end. ), and a refrigerant temperature sensor (144). The second refrigeration heat exchanger (141) is a fin-and-tube type fin-and-tube heat exchanger and constitutes a second cooling heat exchanger. The second cold head heat exchanger (141) exchanges heat between the refrigerant and the air in the chamber. On the other hand, the second refrigerating expansion valve (142) is constituted by an electronic expansion valve. Further, the second refrigeration expansion valve (142) adjusts the refrigerant pressure flowing into the second refrigeration heat exchanger (141). Further, in the second refrigerating display case (15b), a second freezer temperature sensor (146) and a second freezer inner fan (145) are provided. The in-compartment air of the second cold display case (15b) is sent to the second refrigeration heat exchanger (141) via the second freezer internal fan (145). Further, the first bypass pipe (133) is provided in the first freezer inner circuit (13〇a). The first bypass pipe (133) bypasses the first refrigerant flowing into the first refrigeration expansion valve (132). The downstream side of the refrigeration heat exchanger (13 1). One end of the first bypass pipe (丨33) is connected to the inflow end of the first refrigerating expansion valve (132), and the other end is connected between the first refrigerating heat exchanger (131) and the second refrigerating expansion valve (142). . In this case, the i-th bypass pipe (13 3) has a self-contained solenoid valve (§ v - 6 ) as a flow adjustment mechanism. Further, the check valve (CV-8) allows only the refrigerant to flow from the outflow end of the i-th refrigerating heat exchanger (131) to the other end of the first bypass pipe (133). "Supercharger Unit" As mentioned above, the booster unit (16) has a boost circuit (150). A booster compressor (151) is provided in the booster circuit (150). 104698.doc -27- 1272366 The supercharger (1 5 1) is a full-length, closed-face cylinder-type thirsty compressor. The booster compressor (151) supplies electric power through the inverter. The booster compressor (15 1) changes the rotational speed of the compressor motor by changing the output frequency of the inverter to change its capacity. The booster compressor (151) constitutes a secondary compressor. The suction side of the booster compressor (151) is connected to the suction pipe (154), and the discharge side thereof is connected to one end of the discharge pipe (155). The other end of the suction pipe (154) is connected to the gas side end of the second refrigerant circuit (130b). On the other hand, the other end of the discharge pipe (155) is connected to the gas side closing valve (32). A discharge temperature sensor (152) and a high pressure switch (153) are provided in the discharge pipe (155). <<Configuration of Controller>> The refrigeration system (10) of the present embodiment has a controller (2). The controller (200) performs control operations of each of the four (four) and each electric switch according to the operating conditions.

以下，參照附圖說明本實施形態之冷凍裝置（1〇)所進行的相關運轉動作中之主要動作。《冷氣運轉》冷氣運轉是在冷藏展示櫃⑴）、第！冷减展示櫃（15a)、以及第2冷陳展示a(15b)t進行庫内空氣的冷卻，而以空組（12)冷卻室内空氣使店内涼爽。四路，空。進士圖2所不，在至外迴路（40)，第1四路閥（51)及驾閥（52)設$為第1狀態，室外膨脹閥（45)為全閉。並調膨脹閥（1〇2)與冷藏膨脹閥⑴2)的開度受到適當調 104698.doc -28- 1272366 而，在冷凍庫内迴路（130a，13〇b)，電磁閥（sv_6)成為關閉狀悲’同時’第1冷凍膨脹閥（132)及第2冷凍膨脹閥（142) 的開度爻到適當調整。在此一狀態中，變頻壓縮機（4丨）、定頻壓縮機（42)、以及增壓壓縮機（151)進行運轉。變頻壓縮機（41)及定頻壓縮機（42)所吐出的冷媒，從吐出管（64)通過第1四路閥（51)被送到室外熱交換器（43)。在室外熱父換器（43)，冷媒向室外空氣散熱凝結。在室外熱交換器 (43)凝結的冷媒，通過接收器（44)流入第2液管被分配到第2液管（82)的各分歧管（82a，82b)。流入第2液管（82)的第}分歧管（82a)的冷媒，通過第1液側聯絡官路（21)被分配到冷藏庫内迴路（11〇)與第丨冷凍庫内迴路（130a)。，流入冷藏庫内迴路（110)的冷媒，通過冷藏膨脹閥（ιΐ2)時受到減壓被導入冷藏熱交換器⑴υ。在冷藏熱交換器 (1 )》媒從庫内空氣吸熱蒸發。在冷藏熱交換器（⑴）蒸發的冷媒，流入第！氣體側聯絡管路(22)。在冷藏展示櫃 ⑽’於冷藏熱交換器⑴丨）受到冷卻的庫内空氣被供給到庫内。流入第1冷滚庫内迴路⑽a)的冷媒，通過ρ冷轉脹闕 (132)時被減壓到規定壓力後被導入第i冷凍熱交換器 (131)在第1冷凍熱交換器（131)，冷媒由庫内空氣吸熱蒗發。在第1冷隸讀（15a)，於第丨冷殊熱交換器（131)受到冷卻的庫内空氣被供給到庫内。在第1冷滚熱交換器（131)蒸發的冷媒流入第2冷减庫内迴 I04698.doc -29- 1272366 路（130b)。該冷媒通過第2冷凍膨脹閥（142)時被減壓到規定壓力後被導入第2冷凍熱交換器（14ι)。在第2冷凍熱交換器 (141)，冷媒由庫内空氣吸熱蒸發。在第2冷凍展示櫃（丨兄），於第2冷凍熱父換器（丨41)受到冷卻的庫内空氣被供給到庫内0 如上所述’冷卻第1冷凍展示櫃（15a)及第2冷凍展示櫃 (15b)的冷媒’流入增壓迴路（15〇)，被吸入增壓壓縮機 (1 5 1)。在增壓壓縮機（丨5 1)受到壓縮的冷媒，通過吐出管 (155)流入第1氣體側聯絡管路（22)。在第1氣體侧聯絡管路（22)，從冷藏庫内迴路（π〇)被送來的冷媒與從增壓迴路（i 50)被送來的冷媒合流。進而，這些冷媒，從第1氣體側聯絡管路（22)流入第1吸入管（61 )，被吸入變頻壓縮機（41)。變頻壓縮機（41)壓縮所吸入的冷媒被吐出到吐出管（64)的第1分歧吐出管（64a)。另一方面，流入第2液管（82)的第2分歧管（82b)的冷媒，通過第2液側聯絡管路（23)被供給到空調迴路（1〇〇)。流入空調迴路（100)的冷媒，通過空調膨脹閥（1〇2)時受到減壓並被導入到空調熱交換器（101)。在空調熱交換器（1〇1)，冷媒從室内空氣吸熱蒸發。在空調機組（12)，於空調熱交換器（1 〇 1) 受到冷卻的室内空氣被供給到店内。在空調熱交換器（丨〇 j ) 蒸發的冷媒，通過第2氣體側聯絡管路（24)流入到室外迴路 (40)，依序通過第丨四路閥（51)與第2四路閥（52)後，通過第2 吸入管（62)，被吸入定頻壓縮機（42)。定頻壓縮機（42)壓縮吸入的冷媒吐出到吐出管的第2分歧吐出管（64b)。 104698.doc -30- 1272366 《第1暖氣運轉》第1暖氣運轉是在冷藏展示櫃（13)、第i冷凍展示櫃 (15a)、以及第2冷凍展示櫃（15b)中冷卻庫内空氣，而以空調機組（12)加熱室内空氣來供暖店内。如圖3所不，在室外迴路（4〇)，第丨四路閥（51)被設定為第 2狀態，第2四路閥（52)被設定為第丨狀態，室外膨脹閥（45) 為全閉。並且，空調膨脹閥（102)、與冷藏膨脹閥（112)的開度受到調整。進而，冷凍庫内迴路（13〇a，13〇b)中，電磁閥 (SV-6)成為關閉狀態，同時，第i冷凍膨脹閥〇32)及第2冷凍膨脹閥（142)的開度受到適當調整。在此一狀態中，變頻壓縮機（4丨）及增壓壓縮機（151)進行運轉，定頻壓縮機（42') 為停止。並且，室外熱交換器（43)為休止狀態，未被送入冷媒。 7 從變頻壓縮機（41)所吐出的冷媒，通過第2氣體側聯絡管路（24)被導入到空調迴路（1〇〇)的空調熱交換器，向室外空氣散熱凝結。在空調機組（12)，以空調熱交換器（ι〇ι) 加熱至内空氣供給到店内。在空調熱交換器（⑻）凝結的冷媒，通過第2液側聯絡管路（23)被送回到室外迴路（4〇)，通過接收器（44)流入到第2液管（82)。 μ入到第2液官（82)的冷媒，經由第〗液側聯絡管路（2ι) 被分配到冷藏庫内迴路（110)與第！冷凍庫内迴路（13〇a)。進而，在冷藏展示櫃（13)及第i、第2冷;東展示櫃（15a，叫，與上述冷氣運轉時相同的，進行庫内空氣的冷卻。在冷藏（ 111)蒸發的冷媒，通過第1氣體側聯絡管路（22)流 104698.doc -31 - 1272366 入到第1吸入管（61)。另一方面，在第1冷凍熱交換器（131) 及第2冷凍熱交換器（141)蒸發的冷媒，在增壓壓縮機（1 5 1) 受到壓縮後通過第1氣體側聯絡管路（22)流入到第1吸入管 (6 1)。流入第1吸入管（6 1)的冷媒，被吸入變頻壓縮機（4 1) 受到壓縮。如上所述，在第1暖氣運轉中，在冷藏熱交換器（m)及第 1、第2冷凍熱交換器（131，141)冷媒吸熱，在空調熱交換器 (101)中冷媒散熱。進而，利用在冷藏熱交換器（111)及第1、弟2冷/東熱交換器（13 1，141)冷媒從庫内空氣所吸收的熱，來供暖店内。此外，在第1暖氣運轉，也可以運轉定頻壓縮機（42)。是否運轉定頻壓縮機（42)，視冷藏展示櫃〇 3)及第1、第2冷凍展示櫃（15a，15b)的冷卻負荷而決定。這種情況下，流入到第1吸入管（61)的冷媒，其一部分通過吸入連接管（63)及第2 吸入管（62)被吸入到定頻壓縮機（42)。《第2暖氣運轉》第2暖氣運轉，與上述第1暖氣運轉同樣地，是供暖店内的運轉。該第2暖氣運轉，是在上述第丨暖氣運轉供暖能力過剩時而進行。如圖4所不，在室外迴路（4〇)，第1四路閥（51)及第2四路 2(52)被設定為第2狀態，室外膨脹閥（45)為全開。並且，二凋％脹閥（1 〇2)、與冷藏膨脹閥（u 2)的開度受到適當調整。進而，在冷凍庫内迴路（130a，13〇b)，電磁閥0孓6)成為關閉狀怨，同時，第1冷凍膨脹閥（132)及第2冷凍膨脹閥 104698.doc -32- 1272366 (142)的開度受到適當調整。在此一狀態中，變頻壓縮機（41) 及增壓壓縮機（151)進行運轉，定頻壓縮機（42)為停止。 «變頻壓縮機（41)所吐出的冷媒，其一部分通過第2氣體側聯絡管路（24)被導入到空調迴路（1〇〇)的空調熱交換器 (101) ’其餘則通過吐出連接管（65)被導入到室外熱交換器 ()被‘入二调熱父換器（101)的冷媒，向室内空氣散熱凝結，通過第2液側聯絡管路（23)與室外迴路（4〇)的第3液管Hereinafter, the main operation in the related operation operation performed by the refrigeration system (1) of the present embodiment will be described with reference to the drawings. "Air-conditioning operation" Air-conditioning operation is in the refrigerated display cabinet (1)), the first! The cooling display cabinet (15a) and the second cold display a(15b)t cool the air in the store, and the indoor air is cooled by the air group (12) to cool the store. Four way, empty. In the case of the external map (40), the first four-way valve (51) and the valve (52) are set to the first state, and the outdoor expansion valve (45) is fully closed. The opening degree of the expansion valve (1〇2) and the refrigerating expansion valve (1)2) is appropriately adjusted to 104698.doc -28-1272366, and the solenoid valve (sv_6) is closed in the inner circuit (130a, 13〇b) of the freezer. The opening of the first 'slow frozen expansion valve (132) and the second frozen expansion valve (142) is appropriately adjusted. In this state, the inverter compressor (4 丨), the constant frequency compressor (42), and the booster compressor (151) are operated. The refrigerant discharged from the inverter compressor (41) and the fixed-frequency compressor (42) is sent from the discharge pipe (64) to the outdoor heat exchanger (43) through the first four-way valve (51). In the outdoor hot parent converter (43), the refrigerant dissipates heat to the outdoor air. The refrigerant condensed in the outdoor heat exchanger (43) flows into the second liquid pipe through the receiver (44) and is distributed to the branch pipes (82a, 82b) of the second liquid pipe (82). The refrigerant flowing into the first branch pipe (82a) of the second liquid pipe (82) is distributed to the inner circuit (11〇) of the refrigerator and the inner circuit (130a) of the second freezer through the first liquid side contact official road (21). . The refrigerant that has flowed into the circuit (110) in the refrigerator is introduced into the refrigerating heat exchanger (1) by being depressurized when passing through the refrigerating expansion valve (ι 2). In the refrigerated heat exchanger (1), the medium absorbs heat from the inside of the library to evaporate. The refrigerant evaporated in the refrigerating heat exchanger ((1)) flows into the first! Gas side communication line (22). The air in the refrigerator which is cooled in the refrigerating display cabinet (10)' in the refrigerating heat exchanger (1) is supplied into the storage. The refrigerant that has flowed into the first cold rolling in-storage circuit (10) a) is depressurized to a predetermined pressure by the ρ cold-run expansion (132), and is introduced into the first refrigerating heat exchanger (131) in the first refrigerating heat exchanger (131). ), the refrigerant is absorbed by the air in the library. In the first cold reading (15a), the in-compartment air cooled by the Dijon cold heat exchanger (131) is supplied into the reservoir. The refrigerant evaporated in the first cold-roll heat exchanger (131) flows into the second cooling-reduction chamber and returns to I04698.doc -29-1272366 (130b). When the refrigerant passes through the second refrigerating expansion valve (142), it is decompressed to a predetermined pressure and then introduced into the second refrigerating heat exchanger (14). In the second refrigerating heat exchanger (141), the refrigerant evaporates by the heat in the interior of the refrigerator. In the second refrigerated display case (丨兄), the air in the library that was cooled in the second refrigerated hot parent (丨41) is supplied to the library. 0 As described above, 'cooling the first refrigerated display case (15a) and 2 The refrigerant of the refrigerated display cabinet (15b) flows into the booster circuit (15〇) and is sucked into the booster compressor (1 5 1). The refrigerant compressed by the booster compressor (丨5 1) flows into the first gas side communication line (22) through the discharge pipe (155). In the first gas side communication line (22), the refrigerant sent from the refrigerator internal circuit (π〇) merges with the refrigerant sent from the pressure increase circuit (i 50). Further, these refrigerants flow into the first suction pipe (61) from the first gas side communication line (22), and are sucked into the inverter compressor (41). The refrigerant sucked by the inverter compressor (41) is discharged to the first branch discharge pipe (64a) of the discharge pipe (64). On the other hand, the refrigerant that has flowed into the second branch pipe (82b) of the second liquid pipe (82) is supplied to the air-conditioning circuit (1) through the second liquid-side communication line (23). The refrigerant that has flowed into the air-conditioning circuit (100) is depressurized by the air-conditioning expansion valve (1〇2) and introduced into the air-conditioning heat exchanger (101). In the air conditioning heat exchanger (1〇1), the refrigerant absorbs heat from the indoor air to evaporate. In the air conditioning unit (12), indoor air cooled by the air conditioning heat exchanger (1 〇 1) is supplied to the store. The refrigerant evaporated in the air-conditioning heat exchanger (丨〇j) flows into the outdoor circuit (40) through the second gas-side communication line (24), and sequentially passes through the fourth-way valve (51) and the second four-way valve. After (52), it is sucked into the fixed frequency compressor (42) through the second suction pipe (62). The fixed frequency compressor (42) compresses the sucked refrigerant and discharges it to the second branch discharge pipe (64b) of the discharge pipe. 104698.doc -30- 1272366 "1st heating operation" The first heating operation is to cool the air in the refrigerator in the refrigerating display cabinet (13), the i-th refrigerating display cabinet (15a), and the second refrigerating display cabinet (15b). The air conditioning unit (12) heats the indoor air to heat the store. As shown in Fig. 3, in the outdoor circuit (4〇), the fourth four-way valve (51) is set to the second state, the second four-way valve (52) is set to the third state, and the outdoor expansion valve (45) It is fully closed. Further, the opening of the air conditioning expansion valve (102) and the refrigerating expansion valve (112) are adjusted. Further, in the freezer inner circuit (13〇a, 13〇b), the solenoid valve (SV-6) is in a closed state, and the opening degrees of the i-th refrigerating expansion valve 〇32) and the second refrigerating expansion valve (142) are received. Appropriate adjustments. In this state, the inverter compressor (4 丨) and the booster compressor (151) are operated, and the fixed frequency compressor (42') is stopped. Further, the outdoor heat exchanger (43) is in a resting state and is not supplied with the refrigerant. 7 The refrigerant discharged from the inverter compressor (41) is introduced into the air-conditioning heat exchanger of the air-conditioning circuit (1〇〇) through the second gas-side communication pipe (24), and is radiated to the outside air. In the air conditioning unit (12), the air conditioning heat exchanger (Im) is heated to the internal air supply to the store. The refrigerant condensed in the air-conditioning heat exchanger ((8)) is sent back to the outdoor circuit (4〇) through the second liquid-side communication line (23), and flows into the second liquid pipe (82) through the receiver (44). The refrigerant that has entered the second liquid official (82) is distributed to the inner circuit (110) of the refrigerator via the first liquid side communication line (2). Freezer inner loop (13〇a). Further, in the refrigerating display case (13) and the i-th and second-cold; east display cabinets (15a, the same as in the above-described cooling operation, the inside air is cooled. The refrigerating (111) evaporating refrigerant passes. The first gas side communication line (22) flows 104698.doc -31 - 1272366 into the first suction pipe (61). On the other hand, the first refrigeration heat exchanger (131) and the second refrigeration heat exchanger ( 141) The evaporated refrigerant is compressed by the booster compressor (1 5 1) and flows into the first suction pipe (6 1) through the first gas side communication line (22). The first suction pipe (6 1) flows into the first suction pipe (6 1). The refrigerant is compressed by the intake inverter (4 1). As described above, in the first heating operation, the refrigerant in the refrigerating heat exchanger (m) and the first and second refrigerating heat exchangers (131, 141) The heat is absorbed by the refrigerant in the air-conditioning heat exchanger (101). Further, the refrigerant is absorbed from the air in the refrigerator by the refrigerant in the refrigerating heat exchanger (111) and the first and second cold/east heat exchangers (13, 141). The heat is supplied to the heating store. In addition, the fixed-frequency compressor (42) can be operated during the first heating operation. Is the fixed-frequency compressor (42) operated? It is determined by the cooling load of the refrigerated display case 〇 3) and the first and second refrigerated display cases (15a, 15b). In this case, a part of the refrigerant that has flowed into the first suction pipe (61) is sucked into the constant-frequency compressor (42) through the suction connection pipe (63) and the second suction pipe (62). "Second heating operation" The second heating operation is the same as the first heating operation described above. This second heating operation is performed when the heating capacity of the second heating operation is excessive. As shown in Fig. 4, in the outdoor circuit (4〇), the first four-way valve (51) and the second four-way valve 2 (52) are set to the second state, and the outdoor expansion valve (45) is fully opened. Further, the opening degrees of the two-expansion valve (1 〇 2) and the refrigerating expansion valve (u 2) are appropriately adjusted. Further, in the freezer inner circuit (130a, 13〇b), the solenoid valve 0孓6) is closed, and the first refrigerating expansion valve (132) and the second refrigerating expansion valve 104698.doc -32-1272366 (142 The opening of the ) is properly adjusted. In this state, the inverter compressor (41) and the booster compressor (151) are operated, and the fixed frequency compressor (42) is stopped. «The refrigerant discharged from the inverter compressor (41) is partially introduced into the air-conditioning heat exchanger (101) of the air-conditioning circuit (1) through the second gas-side communication line (24). The rest is discharged through the connection pipe. (65) The refrigerant introduced into the outdoor heat exchanger () is 'into the second heat exchanger (101), and is condensed and condensed into the indoor air, and passes through the second liquid side communication line (23) and the outdoor circuit (4〇 The third liquid tube

(83)流入到接收器（44)。被導入到室外熱交換器（43)的冷媒，向室外空氣散熱凝結，通過第丨液管（81)流入到接收器 (44)〇口從接收器（44)流出到第2液管（82)的冷媒，與上述第丨暖氣運轉時同樣的，透過第1;夜側聯絡管路（21)被分配到冷藏庫内迴路⑴〇)與第！冷康庫内迴路（130a)。纟冷藏展示M(i3) 及第I/第2冷涞展*櫃（15a，15b)，進行庫μ氣的冷卻。在冷藏熱交換器（111)蒸發的冷媒，通過第ia體側聯絡管路 (22)流入到第!吸入管(61)。另一方面，纟第i冷床熱交換器 (131)及第2冷凍熱交換器(141)蒸發的冷媒，於增壓壓縮機 (151)受到壓縮後通過第丨氣體側聯絡管路（22)流入到第丨吸入管㈣。流人到第！吸人管（61)的冷媒，被吸人變頻塵縮機（41)受到壓縮。如上述般，第2暖氣運轉中，在A菇 T在令臧熱父換器（111)及第i、(83) Flows into the receiver (44). The refrigerant introduced into the outdoor heat exchanger (43) is condensed and radiated to the outdoor air, and flows into the receiver (44) through the first liquid pipe (81) to flow out from the receiver (44) to the second liquid pipe (82). The refrigerant is distributed to the refrigerator internal circuit (1)〇 and the first through the first; night side communication line (21) in the same manner as in the above-mentioned second heating operation. Cold Kangku inner loop (130a).纟 Refrigerated display M (i3) and I / 2 cold * exhibition * cabinet (15a, 15b), cooling the reservoir. The refrigerant evaporated in the refrigerating heat exchanger (111) flows into the (!) suction pipe (61) through the ia body side communication line (22). On the other hand, the refrigerant evaporated by the 纟th i-bed heat exchanger (131) and the second refrigerating heat exchanger (141) is compressed by the booster compressor (151) and passed through the second gas side communication line (22). ) flows into the third suction pipe (four). Flow to the first! The refrigerant of the suction pipe (61) is compressed by the suction frequency reduction machine (41). As described above, in the second heating operation, the A mushroom T is in the heat exchanger (111) and the i,

第2冷凍熱交換器（131，141)中A )T令媒吸熱，而在空調熱交換器（101)及室外熱交換器（43)中冷婼埒勒 ^ ^ 、冗々嫖放熱。進而，在冷藏埶交換器（111)及第1、第2冷凍執交拖哭η … 不…又換态（131，141)冷媒從庫内 I04698.doc -33 · 1272366 氣所吸收的熱’其_部分被利用來供暖店内，其餘則被排除到室外空氣。、此外，第2日友氣運轉中也可以運轉定頻壓縮機⑷）。是否運轉疋頻壓細機（42)，視冷藏展示櫃（13)及第！、第2冷床展不插（15a，15b)的冷卻負荷來決定。此時，流人第1吸入管 (61)的冷媒’其一部分通過吸入連接管(63)及第2吸入管⑽ 被吸入定頻壓縮機（42)。《弟3暖氣運轉》第3暖氣運轉，與上述第㈣氣運轉同樣地，是供暖店内的運轉。該第3暖氣運轉’在上述第！暖氣運轉中暖氣能力不足時被進行。如圖5所示，在室外迴路（4〇)，第1四路閥（51)被設定為第 2狀態，第2四路閥（52)被設定為第丨狀態。並且，室外膨脹閥（45)、空調膨脹閥（1〇2)、以及冷藏膨脹閥（ιΐ2)的開度受到適當調整。進而，在冷;東庫内迴路（13〇a，13〇b)，電磁闕 (SV-6)為關閉狀態，同時，第i冷凍膨脹閥（ΐ32)及第2冷凍膨脹閥(142)的開度受到適當調整。在此一狀態中，變頻壓縮機（41)、定頻壓縮機（42)、與增壓壓縮機（151)進行運轉。變頻壓縮機（41)及定頻壓縮機（42)所吐出的冷媒，通過第 2氣體側聯絡管路（24)被導入到空調迴路（1〇〇)的空調熱交換器（101)，向室内空氣散熱凝結。在空調機組（12)，於空調熱交換器（101)受到加熱的室内空氣被供給到店内。在空调熱父換裔（101)凝結的冷媒，通過第2液側聯絡管路（23) 與第3液官（83)流入到接收器（44)。從接收器（44)流入第2液 104698.doc -34- 1272366 笞（82)的冷媒，其一部分流入到第1液側聯絡管路（21)，其餘流入到第4液管（84)。流入到第1液側聯絡管路（21)的冷媒，被分配到冷藏庫内迴路（11〇)與第1冷凍庫内迴路（130a)。進而，在冷藏展示櫃 (13)及第1、第2冷凍展示櫃（15a，15b)，與上述第1暖氣運轉時同樣地，進行庫内空氣的冷卻。在冷藏熱交換器（111)被蒸發的冷媒，通過第1氣體側聯絡管路（22)流入到第丨吸入管 (61)。另一方面，在第丨冷凍熱交換器（131)及第2冷凍熱交換器（141)蒸發的冷媒，於增壓壓縮機（151)受到壓縮後通過第1氣體側聯絡管路（22)流入到第1吸入管（61)。流入到第1 吸入管（61)的冷媒，被吸入變頻壓縮機（4 1)受到壓縮。另一方面，流入到第4液管（84)的冷媒，通過室外膨脹閥 (45)時受到減壓而被導入到室外熱交換器（43)，從室外空氣吸熱蒸發。在室外熱交換器（43)蒸發的冷媒，流入到第2吸入管（62)，被吸入定頻壓縮機（42)受到壓縮。如此地，第2暖氣運轉中，在冷藏熱交換器（111)，冷凍熱交換器（131)、以及室外熱交換器（43)中冷媒吸熱，在空調熱交換器（101)中冷媒散熱。進而，利用在冷藏熱交換器 (Π1)及冷練熱父換裔（131)冷媒由庫内空氣所吸收的熱、以及在室外熱交換器（43)冷媒由室外空氣所吸收的熱，來供暖店内。《旁流動作》如上所述，冷凍裝置（10)的通常冷氣運轉或暖氣運轉時，在第1冷凍展示櫃（15a)及第2冷凍展示櫃（15b)的雙方中，進 104698.doc -35- 1272366 仃庫内冷卻。於此，譬如第i冷凍展示櫃（15a)的庫内溫度已經足夠冷卻的狀態，在第丨冷凍熱交換器（131)所進行的冷卻將成為多餘。因此，本實施形態的冷凍裝置（1〇)，進行如下的旁流動作。此外，於此，以冷凍裝置（10)的冷氣運轉時的旁流動作為例來加以說明。士圖6所示，譬如第}冷凍展示櫃（15a)的庫内溫度變得低 • 於規定溫度時，則第1冷凍庫内迴路（130a)的電磁閥（8^6) • 將成為開啟狀態，而第1冷凍膨脹閥（132)將成為全閉狀態。 . 因此，例如在冷氣運轉時，從第1液側聯絡管路（21)被=配 - ㈣1冷;東庫内迴路（H)的冷媒，不流過第！冷;東膨服間 0 32)及第i冷凍熱交換器〇31)，而流過第1旁通管因此，在第1冷凍熱交換器（131)，冷媒與庫内空氣將不進行熱交換。 … 机過第1旁通管（13 3 )的冷媒，通過第2冷凍膨脹閥（丨42) 時被減壓到規定壓力被導入第2冷凍熱交換器（i4i卜在第2 ® 冷凍熱交換器（141) ’冷媒由庫内空氣吸熱蒸發。在第2冷凍展示櫃（15b)，於第2冷凍熱交換器（141)受到冷卻的庫内空氣被供給到庫内。如上述般，只冷卻第2冷凍展示櫃〇5b)的冷媒，流入到增壓迴路（150)，被吸入到增壓壓縮機〇51)。在增壓壓縮機（m)受到壓縮的冷媒，通過吐出管（155)流入第】氣體側聯絡管路（22)。另一方面，經由如此的旁流動作來停止對第丨冷凍熱交換裔（131)供給冷媒，則第丨冷凍展示櫃（15a)的庫内冷卻將不 104698.doc -36- !272366 會被進行。因此，其後第}冷凍展示櫃（15a)的庫内溫度變得咼於規定溫度時，第1冷凍庫内迴路（130a)的電磁閥（δν·6) 將再度開啟，同時，第1冷涞膨脹閥（丨32)將被調整到規定開度，結束上述旁流動作。進而，將再度開始進行如上述的通常冷氣運轉。 -實施形態的效果_ 根據上述貫施形態’能夠獲得以下的效果。若根據上述實施形態，在第丨與第2冷凍熱交換器〇31， 1)中冷卻弟1、弟2冷凍展示櫃（1 5a，1 5b)的庫内的通常運轉中，使冷媒不經由第i旁通管（133)而流過第丨冷凍熱交換器（131)與第2冷凍熱交換器（141)兩者（譬如參照圖u。於此，由於冷媒在流入第丨冷凍熱交換器（131)前通過第〗冷凍膨脹閥（132)，經由將膨脹閥（132)的開度調整到規定開度，能夠調整第1冷凍熱交換器（131)的冷卻能力。同樣地，冷媒在w入第2冷，東熱交換器（141)前通過第2冷珠膨脹閥 ⑽），能_整第2冷練膨脹閥〇42)的開度而調整第2冷凍熱父換器（14 1)的冷卻能力。另一方面，第^東熱交換器（131)的冷卻能力已經足夠而不需要第1冷凌熱交換器（131)對第1冷来展示櫃（15a)進行庫内冷部時’則進行旁流動作（參照圖6)使冷媒通過第1旁通印33)只流經第2冷珠熱交換器（141)。因而，能夠避免在弟1冷珠熱交換器（131)進行多餘的冷卻。於此，在第i旁通管（133)的旁流動作中，冷媒流入第2冷來熱交換器（141)前通過第2冷束膨脹閥⑽）。因此，能夠調整第2冷;東膨服闕 104698.doc -37 - 1272366 (142)的開度而調整第2冷凍熱交換器（141)的冷卻能力。〈實施形態的變形例^ > >其次’說明有關上述實施形態的變形例卜此變形例以第2冷凍庫内迴路〇3〇b)的結構相異於上述實施形態。以下僅說明與上述實施形態之相異點。士圖7所示，在變形例的第2冷凍庫内迴路（i3〇b)設有第2 旁通管（143)，使得即將流人第2冷_脹閥（142)之前的冷媒繞過第2冷束熱交換器〇41)下游側。第2旁通管（⑷）的一端連接到第2冷;東膨脹閥（142)的流入端，另—端連接到第2 冷束用熱交換器（141)的流出端。此一第2旁通管（143)設有開關自在的電磁閥（sv_7)作為流量調整機構。並且，在第 2冷床熱交換器（141)與第2旁通管（143)的另—端之間，設有，止閥（C V-9)。逆止闕（c v_9)僅容許冷媒從第林珠熱交換器（141)的流出端流向第2旁通管（143)的另一端。在變形例1中的冷球裝置⑽，例如不需要第2冷床熱交換器（⑷）進行第2冷;東展*櫃（15b)的庫内冷卻時，開啟電磁閥（SV-7)並使第2冷來膨脹閥（142)為全閉狀態，來將冷媒導 42旁通管（143)。因此’能夠使第2冷;東熱交換印41) 卜止’並使第i冷滚熱交換器〇31)進行第】冷减展示樞⑴^ 的庫内冷卻。、並且’纟變形例1中，當第1冷凍展示櫃(15a)的庫内冷卻過剩時’經由開啟第1旁通管（133)的電磁閥（sv_6)，僅使第 2冷康熱交換器（141)進行第2冷凌展示櫃（i5b)的冷卻。此時，經由將第2冷;東膨脹閥〇42)的開度調整到規定開度，能 104698.doc -38- 1272366 夠調整第2冷凍熱交換器（141)的冷凍能力。 <實施形態的變形例2> 其次’說明有關上述實施形態的變形例此變形例2, 在第1旁通管（133)的結構上與上述實施形態相異。以下僅說明與上述實施形態相異點。如圖8所示，此變形例的第！旁通管（133)位於第丨冷束展示櫃⑽)的庫内’同時，具有與第％東熱交換器⑽)的導熱管接觸而形成的導熱部（133 a)。在冷凍裝置（1 〇)的旁流動作時囚lit ，流過第1旁通管 (133)的冷媒的熱透過導熱部（n3a)傳到第}冷;東熱交換器 ⑽言之’在較低溫狀態的庫内空氣與流過第（旁通管 (133)的冷媒，經由第1冷;東熱交換器U31)及導熱部（13叫進行熱交換，使得流過第1旁通管⑽）的冷媒受到冷卻。因此此支I例2中，在第！冷;東庫内迴路⑴㈣能夠進行冷媒的過冷。因此’能夠提高第2冷;東熱交換器⑽）的冷凉能力。、並且’例如空氣中的水合刀附者到第1冷凍熱交換器（131) 而康、、·口、、’口霜時進行上试的a士 μ 述的旁流動作，也能夠以流過第！旁通官（133)的冷媒來暖化第霜。 7 /术熱乂換益（131)表面進行除 <實施形態的變形例3 > 其次，說明有關上述實在第1旁通管_的結構上二、㈣例3。此變形例3’ 相異。以下僅說明與上述實施二態及上述變形例2 如圖9所示，變形例：相異點弟1方通管（133)的一端連接到第 104698.doc -39- 1272366 1冷凍膨脹閥（132)的、、☆ A *山 „ ^ ^ 入&，另1連接到第〗冷来膨脹閥 (…m冷;東熱交換器（131)之間。第i旁通管（叫，與上述貝細形也同樣地，設有開關自在的電磁閥(SV_6)。在變形例3的冷;東裝置⑽中，譬如冷氣運轉時進行旁流動作’則如圖ίο所示’電磁閥（sv_6)為開啟狀態而幻L 膨脹閥（132)為全閉狀態。目此，流人第i冷;東庫内^路 ⑽^的冷媒’不通過第1冷珠膨脹閥（132)而通過第！旁通管（133)，流入第丨冷;東熱交換器（131)流入。由於流入第工冷凍熱交換H(131)的冷媒，未被減壓，因此即使奪走庫内二氣的熱也不會蒸發’而向比較低溫狀態的庫内空氣放熱。因此，在此一變形例3中，也能對流過第1冷凍熱交換器（131) 的冷媒進行過冷。因此，能夠提高第2冷滚熱交換器（⑷）的冷凍能力。並且，經由旁流動作，使得流過第丨冷凍熱交換器（Η】）未被減壓的冷媒，也能暖化第！冷凍熱交換器（131)表面進行除霜。《其他貫施形態》有關上述貫施形態，本發明還可以是如下的結構。上述實施形態中，設置開關自在的電磁閥（SV_6，SV_7)來作為第1旁通管（133)或第2旁通管（143)的流量調整機構。然而，例如圖π所示，也可以設置開度可變的電動閥（137)來取代電磁閥（此為SV-6)。如此使用電動閥（137)來作為流量調整機構，則能夠以第1冷凍熱交換器（131)與第1旁通管 (133)兩者的規定分配比率使冷媒流通。因此，能夠因應電 104698.doc -40-In the second refrigerating heat exchanger (131, 141), A) T absorbs heat from the medium, and in the air-conditioning heat exchanger (101) and the outdoor heat exchanger (43), it cools and heats up. Furthermore, in the refrigerated enthalpy exchanger (111) and the first and second freezing, the squeezing of the squeezing η ... not ... and the state of the heat (131, 141) of the refrigerant absorbed by the gas in the library I04698.doc -33 · 1272366 The _ part is used to heat the store, and the rest is excluded from the outdoor air. In addition, the fixed frequency compressor (4) can also be operated during the friendly operation on the 2nd day. Whether to operate the 疋 frequency press machine (42), depending on the refrigerated display cabinet (13) and the first! The second cooling bed is determined by the cooling load of (15a, 15b). At this time, a part of the refrigerant "flowing" from the first suction pipe (61) is sucked into the fixed frequency compressor (42) through the suction connection pipe (63) and the second suction pipe (10). "3rd heating operation" The third heating operation is the same as the fourth (fourth) air operation described above. The third heating operation is in the above! It is carried out when there is insufficient heating capacity during heating operation. As shown in Fig. 5, in the outdoor circuit (4〇), the first four-way valve (51) is set to the second state, and the second four-way valve (52) is set to the second state. Further, the opening degrees of the outdoor expansion valve (45), the air conditioning expansion valve (1〇2), and the refrigerating expansion valve (ιΐ2) are appropriately adjusted. Further, in the cold; the east bank inner loop (13〇a, 13〇b), the electromagnetic enthalpy (SV-6) is in a closed state, and at the same time, the i-th refrigerating expansion valve (ΐ32) and the second refrigerating expansion valve (142) The opening is properly adjusted. In this state, the inverter compressor (41), the fixed frequency compressor (42), and the booster compressor (151) are operated. The refrigerant discharged from the inverter compressor (41) and the fixed-frequency compressor (42) is introduced into the air-conditioning heat exchanger (101) of the air-conditioning circuit (1) through the second gas-side communication line (24). The indoor air is cooled and condensed. In the air conditioning unit (12), indoor air heated in the air conditioning heat exchanger (101) is supplied to the store. The refrigerant condensed by the hot father (101) is passed through the second liquid side communication line (23) and the third liquid level (83) to the receiver (44). The refrigerant flowing into the second liquid 104698.doc -34 - 1272366 笞 (82) from the receiver (44) flows into the first liquid side communication line (21), and the like flows into the fourth liquid pipe (84). The refrigerant that has flowed into the first liquid side communication line (21) is distributed to the refrigerator internal circuit (11〇) and the first freezer internal circuit (130a). Further, in the refrigerating display case (13) and the first and second refrigerating display cases (15a, 15b), the inside of the storage compartment is cooled in the same manner as in the case of the first heating operation. The refrigerant evaporated in the refrigerating heat exchanger (111) flows into the second suction pipe (61) through the first gas side communication line (22). On the other hand, the refrigerant evaporated in the second refrigeration heat exchanger (131) and the second refrigeration heat exchanger (141) is compressed by the booster compressor (151) and passes through the first gas side communication line (22). Flows into the first suction pipe (61). The refrigerant that has flowed into the first suction pipe (61) is sucked into the inverter compressor (41) and compressed. On the other hand, the refrigerant that has flowed into the fourth liquid pipe (84) is decompressed by the outdoor expansion valve (45), is introduced into the outdoor heat exchanger (43), and is evaporated from the outdoor air. The refrigerant evaporated in the outdoor heat exchanger (43) flows into the second suction pipe (62), and is sucked into the fixed frequency compressor (42) to be compressed. As described above, in the second heating operation, the refrigerant absorbs heat in the refrigerating heat exchanger (111), the refrigerating heat exchanger (131), and the outdoor heat exchanger (43), and the refrigerant dissipates heat in the air-conditioning heat exchanger (101). Further, the heat absorbed by the air in the refrigerator in the refrigerating heat exchanger (Π1) and the chilling hot father (131) refrigerant, and the heat absorbed by the outdoor air in the outdoor heat exchanger (43) are used. Heating shop. "Parallel Operation" As described above, in the normal air-conditioning operation or the heating operation of the refrigeration system (10), in both the first refrigerating display case (15a) and the second refrigerating display case (15b), 104698.doc - 35- 1272366 Cooling in the library. Here, for example, the temperature in the interior of the i-th refrigerating display case (15a) is sufficiently cooled, and the cooling performed in the second refrigeration heat exchanger (131) becomes redundant. Therefore, the refrigeration system (1) of the present embodiment performs the following bypass operation. Here, the side flow during the cooling operation of the refrigeration system (10) will be described as an example. As shown in Fig. 6, for example, the internal temperature of the refrigerating display case (15a) becomes low. • At the specified temperature, the solenoid valve (8^6) of the first freezer inner circuit (130a) will be turned on. The first refrigerating expansion valve (132) will be in a fully closed state. Therefore, for example, during the air-conditioning operation, the first liquid-side communication line (21) is replaced by - (four) 1 cold; the refrigerant of the east bank inner circuit (H) does not flow through the first! Cold, east expansion room 0 32) and i-th refrigeration heat exchanger 〇 31), and flowing through the first bypass pipe, the refrigerant in the refrigerant and the refrigerator will not be heated in the first refrigeration heat exchanger (131). exchange. The refrigerant that has passed through the first bypass pipe (13 3 ) is depressurized to a predetermined pressure when passing through the second refrigerating expansion valve (丨42), and is introduced into the second refrigerating heat exchanger (i4i in the second ® refrigerating heat exchange) (141) 'The refrigerant is evaporated by the heat in the interior of the refrigerator. In the second refrigerating display cabinet (15b), the air in the refrigerator that is cooled in the second refrigerating heat exchanger (141) is supplied to the storage. As described above, only The refrigerant that cools the second refrigerating display cabinet 〇5b) flows into the supercharging circuit (150) and is sucked into the supercharging compressor 〇 51). The refrigerant compressed by the supercharger (m) flows into the first gas side communication line (22) through the discharge pipe (155). On the other hand, by stopping the supply of the refrigerant to the second frozen heat exchanger (131) via such a bypass operation, the internal cooling of the third frozen display cabinet (15a) will not be 104698.doc -36-!272366 will be get on. Therefore, when the internal temperature of the first refrigerating display case (15a) becomes lower than the predetermined temperature, the solenoid valve (δν·6) of the first freezer internal circuit (130a) is turned on again, and the first cold heading is simultaneously performed. The expansion valve (丨32) will be adjusted to the specified opening degree to end the above-described bypass operation. Further, the normal cold air operation as described above is resumed. - Effect of the embodiment _ The following effects can be obtained by the above-described embodiment. According to the above embodiment, in the normal operation in the storage of the first and second refrigerating heat exchangers 〇31, 1) for cooling the first and second chilled display cases (15a, 15b), the refrigerant is not passed through. The i-th bypass pipe (133) flows through both the second refrigeration heat exchanger (131) and the second refrigeration heat exchanger (141) (see, for example, FIG. u. Here, since the refrigerant flows into the second refrigeration heat exchange) Before the device (131) passes the first refrigeration expansion valve (132), the cooling capacity of the first refrigeration heat exchanger (131) can be adjusted by adjusting the opening degree of the expansion valve (132) to a predetermined opening degree. Similarly, the refrigerant By the second cold ball expansion valve (10) before the second cold heat exchanger (141), the second cold heat expander (the second cold heat expansion valve 〇 42) can be adjusted to adjust the opening degree of the second cold heat expansion valve ( 14 1) Cooling capacity. On the other hand, the cooling capacity of the first heat exchanger (131) is sufficient without the need for the first cold heat exchanger (131) to perform the inner cold portion of the first cold display cabinet (15a). The bypass operation (see Fig. 6) allows the refrigerant to flow through the second cold bead heat exchanger (141) only through the first bypass print 33). Therefore, it is possible to avoid unnecessary cooling of the 1st cold bead heat exchanger (131). Here, in the bypass operation of the i-th bypass pipe (133), the refrigerant passes through the second cold beam expansion valve (10) before flowing into the second cold heat exchanger (141). Therefore, the cooling capacity of the second refrigeration heat exchanger (141) can be adjusted by adjusting the opening degree of the second cold and the east expansion service 104698.doc -37 - 1272366 (142). <Modification of Embodiment> > Next, a modification of the above-described embodiment will be described. The configuration of the second freezer internal circuit 〇3〇b) is different from that of the above embodiment. Only differences from the above embodiment will be described below. As shown in FIG. 7, the second bypass pipe (143) is provided in the second freezer internal circuit (i3〇b) of the modification, so that the refrigerant before the second cold-expansion valve (142) is bypassed. 2 cold beam heat exchanger 〇 41) downstream side. One end of the second bypass pipe ((4)) is connected to the second cold; the inflow end of the east expansion valve (142) is connected to the outflow end of the second cold-beam heat exchanger (141). The second bypass pipe (143) is provided with a switchable solenoid valve (sv_7) as a flow rate adjusting mechanism. Further, a check valve (C V-9) is provided between the second cooling bed heat exchanger (141) and the other end of the second bypass pipe (143). The reverse stop 阙 (c v_9) only allows the refrigerant to flow from the outflow end of the first bead heat exchanger (141) to the other end of the second bypass pipe (143). In the cold ball device (10) according to the first modification, for example, the second cold-bed heat exchanger ((4)) is not required to perform the second cooling; and the Dongzhan* cabinet (15b) is cooled in the interior of the cabinet, the electromagnetic valve (SV-7) is opened. The second cold expansion valve (142) is fully closed, and the refrigerant guide 42 bypass pipe (143). Therefore, 'the second cold; the east heat exchange mark 41 can be stopped' and the i-th cold rolling heat exchanger 〇 31 can be cooled by the first cooling reduction display pivot (1). In the first modification, when the first refrigerating display case (15a) has excessive cooling in the interior of the first refrigerating display case (15a), only the second cold-hot heat exchange is performed via the solenoid valve (sv_6) that opens the first bypass pipe (133). The device (141) performs cooling of the second cold display cabinet (i5b). At this time, by adjusting the opening degree of the second cold and east expansion valve 〇 42) to a predetermined opening degree, the freezing capacity of the second refrigeration heat exchanger (141) can be adjusted by 104698.doc -38 - 1272366. <Modification 2 of Embodiment> Next, a modification of the above-described embodiment will be described. The second modification is different from the above-described embodiment in the configuration of the first bypass pipe (133). Only the differences from the above embodiments will be described below. As shown in Fig. 8, the first modification of this! The bypass pipe (133) is located in the interior of the second cold-cold display cabinet (10), and has a heat transfer portion (133a) formed in contact with the heat transfer pipe of the (%) East heat exchanger (10). During the bypass operation of the freezer (1 〇), the heat of the refrigerant flowing through the first bypass pipe (133) passes through the heat transfer portion (n3a) to the second cold; the east heat exchanger (10) says The air in the lower temperature state flows through the first bypass pipe (the refrigerant passing through the bypass pipe (133) through the first cold; the east heat exchanger U31) and the heat transfer portion (13 is called heat exchange). The refrigerant of (10)) is cooled. Therefore, this example is in the second example, in the first! Cold; the east bank inner circuit (1) (four) is capable of supercooling the refrigerant. Therefore, the cooling ability of the second cold and the east heat exchanger (10) can be improved. In addition, the flow of the hydration knives in the air to the first refrigerating heat exchanger (131) and the side-by-side operation of the test in the case of the scent of the mouth cream can also be performed. Over the first! The refrigerant of the bypass official (133) warmed the frost. 7 / 乂乂 ( 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 131 This modification 3' is different. Only the second embodiment and the above-described modification 2 will be described below. As shown in FIG. 9, the modification: the one end of the different side pipe (133) is connected to the 104698.doc -39-1272366 1 frozen expansion valve ( 132), ☆ A * mountain „ ^ ^ into &, the other 1 is connected to the 〗〖cold expansion valve (...m cold; east heat exchanger (131). The i-th bypass tube (call, with Similarly, the above-described shell shape is provided with a solenoid valve (SV_6) that is freely switched. In the cold apparatus of the third modification, the east device (10) performs a bypass operation when the air conditioner operates, for example, 'the solenoid valve (as shown in FIG. Sv_6) is in the open state and the illusion L expansion valve (132) is in the fully closed state. Therefore, the flow is the first cold; the refrigerant of the east bank (10) is not passed through the first cold bead expansion valve (132). The first bypass pipe (133) flows into the second cooling zone; the east heat exchanger (131) flows in. Since the refrigerant flowing into the second refrigerant heat exchange H (131) is not depressurized, even if the internal gas is taken away The heat does not evaporate and dissipates heat to the air in the relatively low temperature state. Therefore, in the third modification, the refrigerant flowing through the first refrigerating heat exchanger (131) can also be used. Therefore, it is possible to increase the refrigeration capacity of the second cold-roll heat exchanger ((4)). Further, the refrigerant flowing through the second refrigeration heat exchanger (Η) is not decompressed by the bypass operation. The surface of the refrigerating heat exchanger (131) can be defrosted. The other embodiment is the following configuration. The above-described embodiment can also be configured as follows. SV_6, SV_7) is used as a flow rate adjusting mechanism of the first bypass pipe (133) or the second bypass pipe (143). However, as shown in Fig. π, an electric valve (137) having a variable opening degree may be provided. Instead of the solenoid valve (here, SV-6), the electric valve (137) is used as the flow rate adjustment mechanism, so that the first refrigeration heat exchanger (131) and the first bypass pipe (133) can be distributed. The ratio allows the refrigerant to circulate. Therefore, it can respond to electricity 104698.doc -40-

圖 1272366 動閥（137)的開度來調整第1冷凍熱交換器（131)或第2冷涞熱交換器（14 1)的冷凍能力。並且，上述實施形態中，使第1與第2冷凍熱交換器（131， 141)對冷媒迴路（20)串聯而設，但是，也可以在此一冷媒迴路（20)串聯設置3個以上的冷凍熱交換器。在這個情況時，經由在冷媒迴路（20)設置與各冷凍熱交換器對應的複數膨脹機構及旁通管，能夠僅使必要的冷凍熱交換器進行庫内冷卻，同時，能夠個別調整各冷凍熱交換器的冷卻能力。一產業上利用之可能性一如上述說明’本發明對於在冷媒迴路巾複數台用來冷卻庫内的熱交換器串聯而設的冷凍裝置非當【圖式簡單綱】 $ ° 圖1係實施形態中冷凍裝置之概略結構圖。圖2係為冷氣運轉中冷媒流動之冷;東裝置概略结構圖。圖3係為第1暖氣運轉中冷媒流動之冷;東裝置概略結構圖圖。 4係為第2暖氣運轉中冷媒流動之冷涞裝置概略結構之冷來裝置概略結構圖5係為第3暖氣運轉中冷媒流動圖0 圖圖圖圖 6係為旁流動作時冷媒流動之冷凍裝置 7係為變形例1之冷凍裝置概略結構圖。 8係為變形例2之冷凍裝置概略結構圖。 9係為變形例3之冷凍裝置概略結構圖。概略結構圖。 104698.doc -41 - 1272366 圖1 0係為變形例3中旁流動作時之冷媒流動之冷凍裝置概略結構圖。圖11係為其他實施形態之冷凍裝置概略結構圖。圖12係為現有技術之冷凍裝置概略結構圖。【主要元件符號說明】 10 冷凍裝置 20 冷媒迴路Figure 1272366 The opening of the moving valve (137) to adjust the freezing capacity of the first freezing heat exchanger (131) or the second cold head heat exchanger (14 1). Further, in the above embodiment, the first and second refrigerating heat exchangers (131, 141) are provided in series with the refrigerant circuit (20). However, three or more refrigerant circuits (20) may be connected in series. Refrigeration heat exchanger. In this case, by providing the plurality of expansion mechanisms and the bypass pipes corresponding to the respective refrigeration heat exchangers in the refrigerant circuit (20), it is possible to perform only the required refrigeration heat exchangers for internal cooling, and to individually adjust the respective refrigerations. The cooling capacity of the heat exchanger. The possibility of being utilized in an industry is as described above. 'The present invention is not suitable for a refrigeration device in which a plurality of refrigerant circuit tubes are used in series to cool a heat exchanger in a storage tank. [Fig. 1] Fig. 1 is implemented A schematic structural view of a freezer in the form. Fig. 2 is a schematic diagram showing the cold flow of the refrigerant in the cold air operation; Fig. 3 is a schematic view showing the structure of the east device in the first heating operation; 4 is a schematic diagram of a cold-cooling device having a schematic structure of a refrigerant flowing in a second heating operation. FIG. 5 is a refrigerant flow in a third heating operation. FIG. 6 is a freezing of a refrigerant flow during a bypass operation. The device 7 is a schematic configuration diagram of the refrigeration system according to the first modification. 8 is a schematic configuration diagram of the refrigeration system of Modification 2. 9 is a schematic configuration diagram of the refrigeration system of Modification 3. Schematic diagram. 104698.doc -41 - 1272366 Fig. 10 is a schematic configuration diagram of a refrigerating apparatus for flowing a refrigerant during a bypass operation in Modification 3. Fig. 11 is a schematic block diagram showing a refrigeration system according to another embodiment. Figure 12 is a schematic block diagram of a prior art refrigeration system. [Main component symbol description] 10 Freezer 20 Refrigerant circuit

30 冷凍迴路 40 室外迴路熱源側迴路 4 1 變頻壓縮機主壓縮機 43 室外熱交換器熱源側熱交換器 110 冷藏庫内迴路 111 冷藏熱交換器 130a 第1冷凍庫内迴路 130b 第2冷凍庫内迴路 131 第1冷凍熱交換器第1冷卻熱交換器 132 第1冷凍膨脹閥第1膨脹機構 133 第1旁通管 137 電動閥流量調整機構 141 第2冷凍熱交換器第2冷卻熱交換器 142 第2冷凍膨脹閥第2膨脹機構 143 第2旁通管 151 增壓壓縮機副壓縮機 SV-6 電磁閥流量調整機構 104698.doc -42-30 Refrigeration circuit 40 Outdoor circuit heat source side circuit 4 1 Inverter compressor main compressor 43 Outdoor heat exchanger heat source side heat exchanger 110 Refrigerator internal circuit 111 Refrigeration heat exchanger 130a First freezer internal circuit 130b Second freezer internal circuit 131 First refrigeration heat exchanger, first cooling heat exchanger 132, first refrigeration expansion valve, first expansion mechanism 133, first bypass pipe 137, electric valve flow rate adjustment mechanism 141, second refrigeration heat exchanger, second cooling heat exchanger 142, second Refrigeration expansion valve second expansion mechanism 143 second bypass pipe 151 booster compressor sub-compressor SV-6 solenoid valve flow adjustment mechanism 104698.doc -42-

Claims

1272366 X. Patent application scope: 1) A refrigerating device provided with a refrigerant circuit, wherein the refrigerant circuit includes first and second cooling heat exchangers, a compressor, and an expansion mechanism in a separate compartment of the cold portion, the first The second cooling heat exchanger is connected in series to the refrigerant circuit, wherein the expansion mechanism includes a first expansion mechanism and a second expansion mechanism, and the second expansion mechanism adjusts a refrigerant pressure flowing into the second cooling heat exchanger, and second The swell mechanism adjusts the pressure of the refrigerant flowing into the second cooling heat exchanger; the refrigerant circuit is provided with a first bypass pipe, one end of the first bypass pipe is connected to the inflow end of the first % expansion mechanism, and the other end is connected to the first The first cooling device is further provided with a flow rate adjusting mechanism between the first cooling device and the second expansion mechanism. 2. The refrigeration system according to claim 1, wherein the first bypass pipe has a heat transfer portion formed to be in contact with a heat transfer pipe of the first cooling heat exchanger. 3. A refrigerating apparatus provided with a refrigerant circuit, wherein the refrigerant circuit includes a second and second cooling heat exchanger, a compressor, and an expansion mechanism that respectively cool the different compartments, and the first and second cooling heat exchanges The refrigerant circuit is connected in series to the refrigerant circuit, wherein the expansion mechanism includes a third expansion mechanism and a second expansion mechanism, and the second expansion mechanism adjusts the pressure of the refrigerant flowing into the second cooling heat exchanger, and the second expansion mechanism adjusts the flow into the first 2 cooling the refrigerant pressure of the heat exchanger; providing a first bypass pipe in the refrigerant circuit, one end of the first bypass pipe is connected to the inflow end of the first expansion mechanism, and the other end is connected to the first expansion mechanism and 104698.doc I272366 4. 6. Adjust the mechanism between the first cooling heat exchangers. The refrigeration system according to any one of the preceding claims, wherein: the refrigerant circuit is provided with a second bypass pipe, and the second bypass pipe of the second expansion pipe of the second expansion pipe is connected by the steam mountain The second cooling is replaced by a changer, and the second bypass pipe further has a flow rate adjusting mechanism. For example, the freezing device of any one of the items 1 to 3 Φ right-&, such as:: The control mechanism is composed of a solenoid that is free to switch. According to any one of the items 1 to 3, the cold-blooding device of the present invention is composed of a variable electric valve. *Retraction machine "Two machines:: load, device,": The refrigerant circuit of the fine machine and the sub-compressor is composed of a refrigerating circuit and a cold heat source circuit, and the right heat source side circuit is connected in parallel, and the refrigerating returns with the above main The refrigerating heat exchange n of the compressor, the cold ball returning means: the cooling cooling heat exchanger 2 is cooled in the cold storage tank, and the second cooling heat exchanger 2 respectively cools the different converters and the sub-compressor. D, 2nd, 2nd, frozen heat, the first bypass pipe also has a flow rate of 104,698.doc