TWM505576U - Oil return device of refrigerating cycle system for multiple compressors - Google Patents
Oil return device of refrigerating cycle system for multiple compressors Download PDFInfo
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本新型係有關冷凍循環系統的構造，特別是一種多壓縮機冷凍循環系統的回油裝置。The present invention relates to the construction of a refrigeration cycle system, and more particularly to a oil return device for a multi-compressor refrigeration cycle system.
蒸氣壓縮冷凍循環系統是依據卡諾冷凍循環(Carnot refrigerating cycle)的理論，利用冷媒為工作介質的一種熱泵，已知的冷凍空調系統就是依據此一理論而製造的熱交換系統，已知的冷凍空調系統包括：壓縮機、冷凝器、膨脹閥、蒸發器和液氣分離裝置，上述部件之間以冷媒管路互相連接構成冷媒循環迴路，利用冷媒在循環迴路中的相態變化，進而利用冷媒在設於冷凍空調系統之吸熱側的蒸發器吸收熱量，然後透過設於冷凍空調系統之散熱側的冷凝器將冷媒吸收的熱量移除，進而實現在冷氣模式下降低室內溫度的目的。The vapor compression refrigeration cycle system is a heat pump using a refrigerant as a working medium according to the theory of Carnot refrigerating cycle. The known refrigeration air conditioning system is a heat exchange system manufactured according to this theory, and the known refrigeration is known. The air conditioning system includes: a compressor, a condenser, an expansion valve, an evaporator, and a liquid-gas separation device, wherein the components are connected to each other by a refrigerant pipe to form a refrigerant circulation circuit, and the phase change of the refrigerant in the circulation circuit is utilized, thereby using the refrigerant. The evaporator disposed on the heat absorption side of the refrigerating and air-conditioning system absorbs heat, and then removes the heat absorbed by the refrigerant through a condenser provided on the heat dissipating side of the refrigerating and air-conditioning system, thereby achieving the purpose of reducing the indoor temperature in the cold air mode.
有些冷凍空調系統還加裝有油分離器，用以避免壓縮機的潤滑油進入冷媒管路中，一般冷凍系統與空調系統所使用的潤滑油亦可稱為冷凍油(Refrigeration Oil)，冷凍油在蒸氣壓縮冷凍循環系統中的主要作用包括：(1)減少壓縮機內之活動機件的磨擦損耗；(2)將壓縮機內之活動機件因磨擦而產生的熱量帶走；以及(3)壓縮機內部機件如軸封、墊片等，冷凍油對它有密封作用，可避免氣態冷媒外洩而使得冷凍效果降低。因此，潤滑 油是維持壓縮機正常運轉所不能欠缺的重要材料。Some refrigerating air-conditioning systems are also equipped with an oil separator to prevent the lubricating oil of the compressor from entering the refrigerant pipeline. The lubricating oil used in general refrigeration systems and air-conditioning systems may also be called refrigeration oil, refrigeration oil. The main functions in the vapor compression refrigeration cycle system include: (1) reducing the friction loss of moving parts in the compressor; (2) taking away the heat generated by the friction of the moving parts in the compressor; and (3) The internal parts of the compressor, such as shaft seals and gaskets, have a sealing effect on the frozen oil, which can prevent the leakage of gaseous refrigerant and reduce the freezing effect. Therefore, lubrication Oil is an important material that cannot be lacked in maintaining the normal operation of the compressor.
已知的冷凍空調系統僅配置單一個壓縮機，故其製冷能力有限，為了滿足大空間製冷的需要，一種配置有多個壓縮機的冷凍空調系統遂被提出，已知的技術係將多個壓縮機以並聯的方式設置於同一個蒸氣壓縮冷凍循環系統，視負載需要可以控制壓縮機的運轉數，例如多個壓縮機同時運轉或僅部份的壓縮機運轉。在單一個壓縮機的冷凍空調系統中伴隨著冷媒排出壓縮機的潤滑油，會隨著冷媒一起回到同一個壓縮機，因此不虞有潤滑油不足的問題。在具有多個並聯之壓縮機的冷凍空調系統中，多個壓縮機並聯到一個冷媒循環迴路，如何維持每個壓縮機都能維持足夠的潤滑油，換言之，如何適當地將潤滑油分配至多個壓縮機，係為業者所重視的問題。已知的回油分配或油位控制方法包括：第一種是採用油位控制器和油分離器，首先偵測每個壓縮機留存之潤滑油的油位，再依據每個壓縮機留存之潤滑油的油位適時地補充潤滑油；第二種是利用連通管原理及油氣平衡原理，令數個並聯之壓縮機留存之潤滑油的油位維持平衡；第三種是通過特殊的回氣分配管，使各個壓縮機的回氣壓力依次降低，並且按照壓力順序分配回油。The known refrigerating and air-conditioning system is only equipped with a single compressor, so its cooling capacity is limited. In order to meet the needs of large space cooling, a refrigerating and air-conditioning system equipped with multiple compressors is proposed, and the known technology system will be multiple The compressors are arranged in parallel in the same vapor compression refrigeration cycle system, and the number of compressor operations can be controlled depending on the load demand, for example, multiple compressors are running at the same time or only a part of the compressors are running. In a refrigerating and air-conditioning system of a single compressor, the lubricating oil discharged from the compressor with the refrigerant returns to the same compressor along with the refrigerant, so there is no problem of insufficient lubricating oil. In a refrigerated air conditioning system with multiple parallel compressors, multiple compressors are connected in parallel to one refrigerant circulation loop. How to maintain sufficient lubricant for each compressor, in other words, how to properly distribute the lubricant to multiple Compressors are issues that the industry values. Known oil return distribution or oil level control methods include: the first is to use an oil level controller and an oil separator to first detect the oil level of the lubricating oil retained by each compressor, and then retain the remaining oil according to each compressor. The oil level of the lubricating oil replenishes the lubricating oil in a timely manner; the second is to use the principle of the connecting pipe and the principle of oil and gas balance to maintain the oil level of the lubricating oil retained by several parallel compressors; the third is to pass the special return air. The distribution pipe is such that the return air pressure of each compressor is sequentially lowered, and the oil is distributed in order of pressure.
本創作的目的之一在提供一種多壓縮機冷凍循環系統的回油裝置，用以將潤滑油分配予數個並聯的壓縮機的回油裝置。One of the objects of the present invention is to provide a oil return device for a multi-compressor refrigeration cycle system for distributing lubricating oil to oil return devices of a plurality of parallel compressors.
本創作多壓縮機冷凍循環系統的回油裝置的一實施例，係用以將潤滑油分配予數個並聯的壓縮機，包括：一初級油分離器和一毛細管，該毛細管連接於初級油分離器的出油口，其中每一個壓縮機的出口連接有 一初級油分離器，用以從壓縮機之出口排出的冷媒中分離出潤滑油，每一個初級油分離器的出油口連接毛細管，由任一個壓縮機的初級油分離器分離出的潤滑油經由毛細管回送至次一個壓縮機，而最後一個壓縮機的初級油分離器分離出的潤滑油亦在通過一毛細管之後回送至第一個壓縮機，依據此種回油分配方式構成一種可以互相補充並且循環的回油裝置。An embodiment of the oil returning device of the present multi-compressor refrigeration cycle system is for distributing lubricating oil to a plurality of parallel compressors, comprising: a primary oil separator and a capillary tube connected to the primary oil separation The oil outlet of each of the compressors a primary oil separator for separating lubricating oil from the refrigerant discharged from the outlet of the compressor, the oil outlet of each primary oil separator being connected to the capillary, and the lubricating oil separated by the primary oil separator of any one of the compressors Returned to the next compressor via the capillary tube, and the lubricating oil separated by the primary oil separator of the last compressor is also sent back to the first compressor after passing through a capillary tube, and the oil return distribution method can complement each other according to the oil return distribution mode. And a circulating oil return device.
本創作多壓縮機冷凍循環系統的回油裝置的另一實施例，還包括一主要的油分離器，主要的油分離器設於冷凍循環系統的冷媒循環迴路，用以從流動於冷媒循環迴路的冷媒之中分離其餘的潤滑油。Another embodiment of the oil returning device of the multi-compressor refrigeration cycle system of the present invention further comprises a main oil separator, the main oil separator being disposed in the refrigerant circulation circuit of the refrigeration cycle system for flowing from the refrigerant circulation circuit Separate the remaining lubricant from the refrigerant.
透過上述的技術說明，可以瞭解本創作多壓縮機冷凍循環系統的回油裝置具有下列優點。(1)多個壓縮機可透過初級油分離器的連接構成一種可以互相補充並且循環的回油裝置，可以降低多壓縮機冷凍循環系統對潤滑油的需求量，並且使得多壓縮機間的潤滑油的供應達到平衡。(2)主要的油分離器設於冷凍循環系統的冷媒循環迴路，可以進行第二次油分離作業，將冷媒循環迴中的其餘潤滑油予以分離。Through the above technical description, it can be understood that the oil return device of the multi-compressor refrigeration cycle system of the present invention has the following advantages. (1) Multiple compressors can be connected to the primary oil separator to form an oil return device that can complement each other and circulate, which can reduce the demand for lubricating oil in the multi-compressor refrigeration cycle system and make lubrication between multiple compressors. The supply of oil is balanced. (2) The main oil separator is installed in the refrigerant circulation circuit of the refrigeration cycle system, and the second oil separation operation can be performed to separate the remaining lubricating oil circulating from the refrigerant.
以下配合圖式所描述的內容係為用於實現本新型上述之目的、實施例、技術特徵及其功效的較佳實施方式，並非用以限定本新型。The following description of the drawings is a preferred embodiment for the purpose of the present invention, the embodiments, the technical features and the functions thereof, and is not intended to limit the present invention.
10‧‧‧冷凝器10‧‧‧Condenser
30‧‧‧蒸發器30‧‧‧Evaporator
40‧‧‧膨脹閥40‧‧‧Expansion valve
41‧‧‧多通管41‧‧‧Multiple pipes
42‧‧‧儲液器42‧‧‧Liquid
51‧‧‧第一壓縮機51‧‧‧First compressor
52‧‧‧第二壓縮機52‧‧‧Second compressor
53‧‧‧第三壓縮機53‧‧‧ Third compressor
60‧‧‧冷媒管路60‧‧‧ refrigerant pipeline
71a、71b、71c‧‧‧初級油分離器71a, 71b, 71c‧‧‧ primary oil separator
72a、72b、72c‧‧‧毛細管72a, 72b, 72c‧‧‧ Capillary
80‧‧‧主要的油分離器80‧‧‧Main oil separator
81‧‧‧毛細管81‧‧‧ Capillary
圖1為本創作多壓縮機冷凍循環系統的回油裝置的一實施例構造示意圖。FIG. 1 is a schematic structural view of an embodiment of an oil return device for creating a multi-compressor refrigeration cycle system.
圖2為本創作多壓縮機冷凍循環系統的回油裝置的另一實施例構造示意圖。2 is a schematic view showing the construction of another embodiment of the oil returning device of the multi-compressor refrigeration cycle system.
圖3為本創作多壓縮機冷凍循環系統的回油裝置的另一實施例構造示意圖。FIG. 3 is a schematic structural view of another embodiment of the oil return device of the multi-compressor refrigeration cycle system of the present invention.
首先請參閱圖1，為本創作多壓縮機冷凍循環系統的回油裝置的一實施例構造示意圖。圖1繪示的是一種具有多個並聯壓縮機的蒸氣壓縮冷凍循環系統的構造，該蒸氣壓縮冷凍循環系統包括：一冷凝器10、一蒸發器30、一膨脹閥40和多個並聯的壓縮機，圖1中繪示的實施例為三個並聯的壓縮機，但不以此為限(也可以是二個或以上數量之並聯的壓縮機)，為了便於說明，三個並聯的壓縮機分別名為第一壓縮機51、第二壓縮機52和第三壓縮機53；上述各部件以冷媒管路60連接構成一冷媒循環迴路，利用冷媒在冷媒循環迴路中的物理變化，實現在`蒸發器30吸收熱量，然後在冷凝器10將冷媒吸收的熱量移除的熱泵功能，而且視負載需要可以控制壓縮機的運轉數，例如多個壓縮機同時運轉或僅部份的壓縮機運轉。有關這種蒸氣壓縮冷凍循環系統的工作原理為該領域具有通常知識者所熟知，故不多贅述。First, please refer to FIG. 1 , which is a schematic structural view of an embodiment of the oil return device of the multi-compressor refrigeration cycle system. 1 is a configuration of a vapor compression refrigeration cycle system having a plurality of parallel compressors including a condenser 10, an evaporator 30, an expansion valve 40, and a plurality of parallel compressions. The embodiment shown in FIG. 1 is three parallel compressors, but not limited thereto (may be two or more parallel compressors in parallel), for convenience of explanation, three parallel compressors The first compressor 51, the second compressor 52, and the third compressor 53 are respectively named; the above-mentioned components are connected by a refrigerant pipe 60 to form a refrigerant circulation circuit, and the physical change of the refrigerant in the refrigerant circulation circuit is realized. The evaporator 30 absorbs heat and then removes the heat pump function of the heat absorbed by the refrigerant in the condenser 10, and can control the number of compressor operations depending on the load demand, for example, a plurality of compressors are operated at the same time or only a part of the compressors are operated. The working principle of such a vapor compression refrigeration cycle system is well known to those skilled in the art and will not be described.
本創作多壓縮機冷凍循環系統的回油裝置的一實施例，係用以將潤滑油分配予數個並聯的壓縮機，分別為第一壓縮機51、第二壓縮機52和第三壓縮機53。回油裝置的一實施例包括：一初級油分離器和一毛細管，該毛細管連接於初級油分離器的出油口，其中每一個壓縮機(包括第一壓縮機51、第二壓縮機52和第三壓縮機53)的出口連接有一初級油分離器分別為初級油分離器71a、71b、71c，用以對從壓縮機之出口排出的冷媒進行第一次油分離作業，每一個初級油分離器71a、71b、71c的出油口分別連接有一毛細管，分別為毛細管72a、72b、72c，其中任一個壓縮機的初級油分離器透過對冷媒進行油氣分離後獲得的潤滑油經由毛細管回送至次一個壓縮機，而最後一個壓縮機的初級油分離器分離出的潤滑油在通過毛細管後 回送至第一個壓縮機，依據此種回油分配方式構成一種可以互相補充並且循環的回油裝置。而通過每一個初級油分離器71a、71b、71c的冷媒(此時為氣態冷媒)則通過冷媒管路60連接構成的冷媒循環迴路，依序通過冷凝器10、膨脹閥40和蒸發器30之後再經由一多通管41送回至多個壓縮機(包括第一壓縮機51、第二壓縮機52和第三壓縮機53)完成一次的冷凍循環，必要時在蒸發器30和多通管41之間可設置一儲液器42，用以分離冷媒中的水份。An embodiment of the oil returning device of the present multi-compressor refrigeration cycle system is for distributing lubricating oil to a plurality of parallel compressors, namely a first compressor 51, a second compressor 52 and a third compressor 53. An embodiment of the oil returning device includes: a primary oil separator and a capillary connected to an oil outlet of the primary oil separator, wherein each compressor (including the first compressor 51, the second compressor 52, and The outlet of the third compressor 53) is connected to a primary oil separator, which is a primary oil separator 71a, 71b, 71c, for performing the first oil separation operation on the refrigerant discharged from the outlet of the compressor, each primary oil separation. The oil outlets of the devices 71a, 71b, and 71c are respectively connected with a capillary tube, which are respectively capillary tubes 72a, 72b, and 72c, and the primary oil separator of any one of the compressors is sent back to the secondary oil through the capillary oil after the oil and gas separation of the refrigerant. a compressor, and the lubricating oil separated by the primary oil separator of the last compressor passes through the capillary Returning to the first compressor, according to this oil return distribution method, an oil return device which can complement each other and circulate is formed. The refrigerant passing through each of the primary oil separators 71a, 71b, and 71c (in this case, the gaseous refrigerant) is connected to the refrigerant circulation circuit formed by the refrigerant line 60, and sequentially passes through the condenser 10, the expansion valve 40, and the evaporator 30. Then, it is sent back to the plurality of compressors (including the first compressor 51, the second compressor 52, and the third compressor 53) via a multi-pass pipe 41 to complete the refrigeration cycle once, if necessary, in the evaporator 30 and the multi-pass pipe 41. A reservoir 42 may be disposed between the two to separate the moisture in the refrigerant.
前述本創作之回油裝置的一種實施方式，茲以圖1繪示的構造為例說明如下，其中從第一壓縮機51之出口排出的冷媒首先通過初級油分離器71a，由初級油分離器71a進行油氣分離後獲得的潤滑油經由毛細管72a回送至次一個壓縮機(即第二壓縮機52)；從第二壓縮機52之出口排出的冷媒先通過初級油分離器71b，由初級油分離器71b進行油氣分離後獲得的潤滑油經由毛細管72b回送至次一個壓縮機(即第三壓縮機53)；而從最後一個壓縮機(即第三壓縮機53)之出口排出的冷媒先通過初級油分離器71c，由初級油分離器71c進行油氣分離後獲得的潤滑油經由毛細管72c回送至第一個壓縮機(即第一壓縮機51)，依據此種回油分配方式構成一種可以互相補充並且循環的回油裝置。An embodiment of the oil returning device of the present invention is described by taking the configuration shown in FIG. 1 as an example, wherein the refrigerant discharged from the outlet of the first compressor 51 first passes through the primary oil separator 71a, and the primary oil separator is used. The lubricating oil obtained after the oil and gas separation 71a is returned to the next compressor (i.e., the second compressor 52) via the capillary 72a; the refrigerant discharged from the outlet of the second compressor 52 passes through the primary oil separator 71b, and is separated from the primary oil. The lubricating oil obtained after the oil and gas separation of the device 71b is returned to the next compressor (ie, the third compressor 53) via the capillary 72b; and the refrigerant discharged from the outlet of the last compressor (ie, the third compressor 53) passes through the primary The oil separator 71c, the lubricating oil obtained by the primary oil separator 71c after the oil and gas separation is returned to the first compressor (i.e., the first compressor 51) via the capillary 72c, and the oil return distribution method can complement each other. And a circulating oil return device.
請參閱圖2，係為本創作多壓縮機冷凍循環系統的回油裝置的另一實施例，與圖1之實施例的差異在於，圖2的實施例係以圖1之實施例構造為基礎並且還包括：一主要的油分離器80，主要的油分離器80設於冷凍循環系統的冷媒循環迴路，用以進行第二次油分離作業，主要的油分離器80的入口和每一個初級油分離器71a、71b、71c的冷媒排出口連接，利用主要的油分離器80從流動於冷媒循環迴路的冷媒之中分離其餘的潤滑油， 主要的油分離器80的出油口和多通管41的入口之間連接有一毛細管81，多通管41的出口分別連接每個壓縮機(包括第一壓縮機51、第二壓縮機52和第三壓縮機53)的回油口，經由主要的油分離器80分離獲得的潤滑油可通過多通管41回送至每個壓縮機。Referring to FIG. 2, it is another embodiment of the oil returning device of the present multi-compressor refrigeration cycle system. The difference from the embodiment of FIG. 1 is that the embodiment of FIG. 2 is based on the embodiment of FIG. And also includes: a main oil separator 80, the main oil separator 80 is disposed in the refrigerant circulation circuit of the refrigeration cycle system for performing the second oil separation operation, the inlet of the main oil separator 80 and each of the primary The refrigerant discharge ports of the oil separators 71a, 71b, and 71c are connected, and the remaining oil is separated from the refrigerant flowing through the refrigerant circulation circuit by the main oil separator 80. A capillary 81 is connected between the oil outlet of the main oil separator 80 and the inlet of the multi-pass pipe 41, and the outlet of the multi-pass pipe 41 is connected to each compressor (including the first compressor 51, the second compressor 52, and The oil return port of the third compressor 53), the lubricating oil separated by the main oil separator 80, can be returned to each compressor through the multi-pass pipe 41.
請參閱圖3係為本創作的另一實施例，與前述圖1之實施例的差異在於，圖3所示之另一實施例採相反的回油順序，其實施方式係為任一個壓縮機(包括第一壓縮機51、第二壓縮機52和第三壓縮機53)的初級油分離器71a、71b、71c透過對冷媒進行油氣分離後獲得的潤滑油皆被回送至前一個壓縮機，而第一個壓縮機51的初級油分離器71a分離出的潤滑油則回送至最後一個壓縮機53，依據此種回油分配方式同樣能構成一種可以互相補充並且循環的回油裝置。Please refer to FIG. 3 for another embodiment of the present invention. The difference from the embodiment of FIG. 1 is that the other embodiment shown in FIG. 3 adopts an opposite oil return sequence, and the embodiment is any compressor. The primary oil separators 71a, 71b, and 71c (including the first compressor 51, the second compressor 52, and the third compressor 53) are returned to the previous compressor through the lubricating oil obtained by separating the oil and gas by the refrigerant. The lubricating oil separated by the primary oil separator 71a of the first compressor 51 is returned to the last compressor 53, and according to this oil return distribution, an oil returning device which can complement each other and circulate can also be constructed.
以上所述之實施例及/或實施方式，僅是用以說明實現本創作技術的較佳實施例及/或實施方式，並非對本創作技術的實施方式作任何形式上的限制，任何熟習相像技術者，在不脫離本創作內容所揭露之技術手段的範圍，當可作些許之更動或修飾為其他等效的實施例，但仍應視為與本創作實質相同之技術或實施例。The embodiments and/or the embodiments described above are merely illustrative of preferred embodiments and/or implementations of the present invention, and are not intended to limit the implementation of the present invention in any way. The invention may be modified or modified to other equivalent embodiments without departing from the spirit and scope of the invention.
10‧‧‧冷凝器10‧‧‧Condenser
30‧‧‧蒸發器30‧‧‧Evaporator
40‧‧‧膨脹閥40‧‧‧Expansion valve
41‧‧‧多通管41‧‧‧Multiple pipes
42‧‧‧儲液器42‧‧‧Liquid
51‧‧‧第一壓縮機51‧‧‧First compressor
52‧‧‧第二壓縮機52‧‧‧Second compressor
53‧‧‧第三壓縮機53‧‧‧ Third compressor
60‧‧‧冷媒管路60‧‧‧ refrigerant pipeline
71a、71b、71c‧‧‧初級油分離器71a, 71b, 71c‧‧‧ primary oil separator
72a、72b、72c‧‧‧毛細管72a, 72b, 72c‧‧‧ Capillary
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104204615U TWM505576U (en) | 2015-03-27 | 2015-03-27 | Oil return device of refrigerating cycle system for multiple compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104204615U TWM505576U (en) | 2015-03-27 | 2015-03-27 | Oil return device of refrigerating cycle system for multiple compressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM505576U true TWM505576U (en) | 2015-07-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104204615U TWM505576U (en) | 2015-03-27 | 2015-03-27 | Oil return device of refrigerating cycle system for multiple compressors |
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| Country | Link |
|---|---|
| TW (1) | TWM505576U (en) |
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2015
- 2015-03-27 TW TW104204615U patent/TWM505576U/en not_active IP Right Cessation
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