200406546 ⑴ 玖、發明說明 【發明所屬之技術領域】 本發明乃以異丁烷R600a(isobutane-R600a)冷媒（ 下面稱R600a 冷媒）或丙院R290 ( propan e-R290)冷媒 (下面稱R290冷媒）爲壓縮對稱之冷媒壓縮機。 【先前技術】 以往使用冷媒壓縮機之冷凍循環（refrigeration cycle # )所用之冷媒係屬於CFC( Chlorofluorocarbon)冷媒之二 氯化二氟化甲烷R12 冷媒（下面稱R12 冷媒，HFC ( Hydrofluoro Carbon)冷媒之（1，1，1，2·三氟化乙燃 )-R 1 3 4 a 冷媒（下面稱R 1 3 4 a 冷媒等。）惟由於R 1 2 冷媒係破壞臭氧層（ο ζ ο n e 1 a y e r )之比例大而逐漸改爲 R1 34a冷媒，又近年來認爲R1 34a乃促進地環溫暖化之 原因之一而檢討以R600a冷媒或R290冷媒來替代。 • 【發明內容】 以上述R600a冷媒或R290冷媒爲壓縮對象冷媒地提 案之各種冷媒壓縮機之案件係以隨應於使用條件之材料之 案件爲多。 惟考慮R600a冷媒或R290冷媒係屬於可燃之冷媒時 ，即須要防止起因於滑動部之燒損（燒著）等之鎖固狀態 (locked state)之馬達之電流（motor current)之異常上 昇所致之火燒（發火）等之必要，惟該去除其要因之對策 (2) (2)200406546 乃不夠充份。 本發明係考慮了上述之情形所創作，提供一種以 R 6 0 0 a冷媒或R 2 9 0冷媒爲壓縮對象冷媒之狀態下，仍然 以確保長期長久性由而一面抑制馬達電流之異常，一面提 高安全性之冷媒壓縮機爲目的。 (解決問題之手段） 有關申請專利範圍第1項之發明乃，在於R 6 0 0 a冷媒 · 或R2 9 0冷媒爲壓縮對象冷媒之冷媒壓縮機中， 上述冷媒壓縮機係，具有二構件乃互相滑動之滑動機 構部，而該一方之構件係包含80%以上之鋁，及13〜17%之 矽之鋁合金所構成，另一方之構件係，鐵系之材料所構成 爲其特徵之冷媒壓縮機。 有關申請專利範圍第2項之發明乃如申請專利範圍第1 項所述之冷媒壓縮機，其中 上述鋁合金係再含3〜5 %之銅，及0 · 2〜0 · 7 %之鎂（ · magnesium)爲其特徵。 有關申請專利範圍第3項之發明乃如申請專利範圍第！ 項所述之冷媒壓縮機，其中 上述鐵系材料係，以鐵爲主成份，而含有2.5〜4 . 〇 %之 全量之碳（toal carbon)，及1〜3 %之5夕’以及0.3〜1.2 %之 鎂爲特徵之冷媒壓縮機。 有關申請專利範圍第4項之發明乃如申請專利範圍第i 項所述之冷媒壓縮機，其中 - 6- (3) (3)200406546 用於潤滑上述滑動機構部之潤滑油，而使用石鱲系鑛 油、環烷系鑛油、及酯系油其中之任何一種爲其特徵。 有關申請專利範圍第5項之發明乃如申請專利範圍第4 項所述之冷媒壓縮機，其中 上述潤滑油係3有〇 · 1〜1 0 %之局級脂肪酸系或醋系之 油性劑爲其特徵。 有關申請專利範圍第6項之發明乃如申請專利範圍第4 項所述之冷媒壓縮機，其中 φ 上述潤滑油乃，以磷或鎢爲耐特壓添加劑（extreme-pressure additive) 而含有 0.1 〜 〇.5 % 爲其 特徵。 有關申請專利範圍第7項之發明乃如申請專利範圍第1 項所述之冷媒壓縮機，其中上述互相滑動之一方之構件與 另一方之構件之至少一方係施予磷酸錳處理爲其特徵。 有關申請專利範圍第8項之發明乃如申請專利範圍第 1〜7項其中之任何一項所述之冷媒壓縮機，其中上述滑動 機構部係軸承機構，上述一方之構件係構成上述軸承機構 春 之軸承，上述另一方之構件係嵌合於上述軸承之主軸爲其 特徵。 【實施方式】 下面依附圖詳細的說明本發明之合宜之實施形態。 第1 ( a )圖表示本發明之冷媒壓縮機之第1實施例之 縱剖面圖。 第1 (b)圖表不以第1圖（a)之以軸心爲中心90度不 (4) (4)200406546 同之角度一部份以剖面顯示之側面圖。 第2圖表示，將構成第1圖之冷媒壓縮機之框架，與嵌 合於該框架之主軸一倂表示之擴大剖面圖。 第3圖係爲了說明第1實施例之作用，效果之表示矽 (S i )之含有率與耐久時間之關係之線圖。 這些各圖中，在裝著於密閉容器11之內部之軸承1乃 在於密閉容器1 1與同一軸心部而凸出於下方之凸出部’在 該凸出部形成有貫穿孔而形成主軸承3。在此主軸承3中旋 H 轉自如地裝置有主軸2，在於主軸2之上端部具備有凸出於 框架1之上面，且偏心地旋轉之曲柄4。又主軸2之下端部 係自主軸承3突出，該突出部係插著於構成馬達之轉子7之 軸心。在於轉子7之外側有，定子8係成一體地固定於框架 1，而介著不圖示之線圈型彈簧而裝置於密閉容器1之底部 〇 在於框架1之上面裝置有，由活塞5及氣缸6所形成之 壓縮部。而活塞5之桿係隨應於曲柄4之偏心運動而使活塞 # 5往復動狀地被結合而成。 在於密閉容器1 1之下部貯存有潤滑油9，主軸2係隨應 著其旋轉一方面吸上潤滑油而潤滑主軸承3，同時也實施 壓縮部之潤滑作用。又在於密閉容器1 1之外側面設有驅動 電力供給用之連接端子1 0。 下面說明如上述地構成之冷媒壓縮機之動作。接著再 言及其材質。 當對於連接端子1 〇施加驅動電力供給用之電壓時，轉 -8- (5) (5)200406546 子7係旋轉，此時由與轉子7成一體化之主軸2之曲柄4之偏 心運動而活塞5係被往復驅動。使活塞5往復驅動由而反複 了冷媒之吸入、壓縮、吐出，而在省略了圖示之冷凍循環 中，使低壓冷媒成爲高壓冷媒。 本實施例乃藉由確保長期耐久性來防止滑動部之燒著 (燒損），同時抑制馬達電流之異常上昇者。因此主軸承 3係以鋁合金所構成主軸2係由鐵系材料來構成。因而主軸 承3之內周面將介著潤滑油9之油膜而經常接觸於主軸2。 此時，鋁合金與主軸2之滑動摩擦愈小，換言之滑動 性能愈高性能係數（COP: Co effi cent Of Performance )愈 可提高，有減低消費電力之效果。又提高滑動性能而可以 提高耐摩耗性及耐久性。 第3圖乃，以鋁爲主成份，以種種比例地混合了矽（ Si )之鋁合金之鋁合金之各個之耐久時間描繪（plot )所 獲得之特性曲線。在此曲線A可以看出，矽成份在 13.0〜17.0%範圍而耐久時間會呈爲最大。第4圖係改變鋁 合金之矽之含有量時之試驗所獲得之各性能係數之特性曲 線。由該圖所示之特性曲線B可以知道矽之含有量係多於 1 3.0%，且大大地超出1 7%之廣大範圍而性能係數呈顯 COPmax。而含有率愈少於13%或超過了 25%愈多，性能係 數係會降低。於是由第3圖所示之耐久時間之實驗結果及 第4圖所示之性能係數之實驗結果，將矽（S i )之含有量 定爲1 3.0〜1 7.0 %之範圍。主成份之鋁（A1 )規定爲8 0 %以 上就可以使之具備最大之耐摩耗性、耐久性。 -9 - (6) (6)200406546 接著，本實施例乃其潤滑油係使用石蠟系、或環烷系 之鑛油或酯系油其中之任一種。 該潤滑油乃在主軸2實施旋轉時，從主軸2之底部被 吸上，潤滑主軸2及主軸3，再潤滑曲柄外周面，噴出於曲 柄之上部，實施壓縮部之滑動部份之潤滑。又對於石蠟系 或環烷系之鑛油或酯系油將添加油性劑及耐特壓添加劑之 其中之一方或兩。 第5圖表示對於環烷系鑛油及石蠟系鑛油分別以各種 · 之比例地添加高級脂肪酸或酯系之油性劑時之耐久時間與 添加比例之關性之曲線圖。 特性曲線C表示環烷系鑛油之特性，特性曲線D表示 石蠟系鑛油之各特性者。 第6圖表示對於環烷系鑛油及石蠟系鑛油，分別做爲 耐特壓添加劑，以各種比例地添加磷（P )或鎢（W )時 之耐久時間與添加比例之關係之曲線圖。 特性曲線F係環烷系鑛油特性線圖。特性曲線F係石蠟 β 系鑛油之各特性者。 由第5圖及第6圖之線圖可以了解，將油性劑之添加量 爲0.1°/。以上，耐特壓添加劑之添加量爲0.1〜0.5%，於是一 方面可以延長耐久時間，同時可以提高耐久性能。 但是，油性劑之添加比例多於1 〇%就附著於冷凍循環 之熱交換器內壁，而使熱交換性能降低，因此須少於1 0% 以下爲宜。又由於酯系鑛油之對於油性劑及耐特壓添加劑 之各添加量之耐久時間特性係與石蠟系鑛油略同樣，所以 -10 - (7) (7)200406546 省略圖示。 另一方面使用鐵系之材料之主軸2乃，在於滑動部施’ 予磷酸錳處理。如比較施予磷酸錳處理與未施予磷酸錳處 理時之各耐久時間時，即如第7圖所示，未施予磷酸錳處 理時之耐久時間爲E 1，而施予處理時之耐久時間延長爲 E2 ( >E1)。 於是依本發明之第1實施例時，在於R 6 0 0 a冷媒或 R2 9 0冷媒爲壓縮對象冷媒時，仍然由確保長期耐久性而 肇 可以抑制馬達電流之異常上昇，由而可以提高安全性高之 冷媒壓縮機也。 第8圖係做爲本發明之冷媒壓縮機之第2實施例之表 示壓縮部之構成之放大剖面圖。 本例中，由主軸2 (參照第2圖）之旋轉而曲柄4係行 偏心運動，由而活塞5係在於氣缸6之內部行往復運動’實 施冷媒之吸入、壓縮及吐出。本例中，活塞5與氣缸6係互 相滑動之構件，其中活塞5係由鋁合金所構成’氣缸6係使 φ 用鐵系之材料，而這些乃介著潤滑油9之油膜而經常接觸 〇 此時，鋁合金與氣缸6之滑動摩擦愈小，換言之滑動 性能愈高性能係（c 〇 P )愈可提高。而有減低消費電力之 效果。所以做爲活塞5而如上述使用：矽（S i )之含有量 1 3.0〜1 7 %之範圍，鋁8 0 %以上之鋁合金由而使之具有最大 之耐摩耗性、耐久性、又對於氣缸6之滑動部施予磷酸錳 處理，由而再可以提高耐久性。 -11 - (8) (8)200406546 於是依本發明之第2實施例時’在於R 6 0 0 a冷媒或 R2 9 0冷媒爲冷媒壓縮對象冷媒之時’也由確保長期耐久 性而可以抑制馬達電流之異常上昇而可以提高安全性高之 冷媒壓縮機。 再者在於構成上述各實施例之鋁合金上添加銅（Cu ) 或鎂（M g )，由而更可提高耐久性。 第9圖表示，將矽（Si )之含有量定爲13〜17%而改變 了銅（Cu )或鎂（Mg )之比例地添加時之耐久時間分別 鲁 以實施例1〜6，以線條圖（bar graph )來表示。同時以矽 (Si )之含有量爲1 0%時之耐久時間爲比較例而以線條圖 來表示者。 由此圖可知，以銅（Cu ) 3〜5%，鎂（Mg ) 0.2〜0.7% 之比例來添加就更能提高耐久性。 再者’在於上述之鐵系材料中，以鐵爲主成份含有： 全碳成份爲2 · 5〜4 · 0 °/。，矽（S i )爲1〜3 %，錳（Μ η )爲 0 · 3〜1 · 2 %，就可與硫（S )爲0 · 2 %以下，矽（S i )爲 φ 1 3〜1 7 %之範圍地含有之鋁合金之相配性非常良好，更能 使互相滑動之二個構件之耐久性更提高也。 (發明之效果） 由上述之說明可以明瞭，依本發明時，在於R600a 冷媒或R2 9 0冷媒爲冷媒對.象之情形之下，仍然由可以確 保長期耐久性而抑制馬達電流之異常上昇而可以提高安全 性高之冷媒壓縮機也。 -12- 200406546 Ο) 【圖式簡單說明】 · 第1圖表示本發明之冷媒壓縮機之第1實施例之縱剖 面圖，及以軸心爲中心9 0度不同之角度一部份以剖面顯示 之側面圖。 第2圖表示，將構成第1圖之冷媒壓縮機之框架，與嵌 合於該框架之主軸一倂表示之擴大剖面圖。 第3圖係爲了說明第1實施例之作用，效果之表示矽 馨 (S i )之含有率與耐久時間之關係之線圖。 第4圖係爲了說明第1實施例之作用，效果之表示矽 (S i )之含有率與成績常數之關係之線圖。 第5圖係爲了說明第1實施例之作用，效果之表示油 性劑之添加比例與耐久時間之關係之線圖。 第6圖係爲了說明第1實施例之作用，效果之表示耐 特壓添加劑之添加比例與耐加時間之關係之線圖。 第7圖係爲了說明第1實施例之作用，效果之表示在 · 於滑動部施加磷酸錳處理之情形，與不做處理之差異之線 條圖。 第8圖係表示本發明之冷媒壓縮機之第2實施例而表 示壓縮部之構成之放大剖面圖。 第9圖係表示本發明之冷媒壓縮機之變形例，而在於 鋁合金上添加其他元素時之耐久時間之相差之線條圖。 【符號說明】 -13- (10)200406546 1 框架 2 主軸 3 主軸承 4 曲柄 5 活塞 6 氣缸 7 轉子 8 定子 9 潤滑油 10 連接端子 11 密閉容器200406546 玖 发明 Description of the invention [Technical field to which the invention belongs] The present invention is based on isobutane R600a (isobutane-R600a) refrigerant (hereinafter referred to as R600a refrigerant) or Bingyuan R290 (propan e-R290) refrigerant (hereinafter referred to as R290 refrigerant) Compression symmetrical refrigerant compressor. [Previous technology] The refrigerant used in the refrigerating cycle (refrigeration cycle #) of the refrigerant compressor is a CFC (Chlorofluorocarbon) refrigerant, dichloromethane difluoride methane R12 refrigerant (hereinafter referred to as R12 refrigerant, HFC (Hydrofluoro Carbon) refrigerant (1,1,1,2,2 · Ethylene trifluoride) -R 1 3 4 a refrigerant (hereinafter referred to as R 1 3 4 a refrigerant, etc.) However, the R 1 2 refrigerant system destroys the ozone layer (ο ζ ο ne 1 ayer The proportion of) is large and gradually changed to R1 34a refrigerant. In recent years, R1 34a is considered to be one of the reasons to promote the warming of the terrestrial environment. R600a refrigerant or R290 refrigerant is considered as the replacement. Various cases of refrigerant compressors where R290 refrigerant is the compression target refrigerant are the materials that are compatible with the conditions of use. However, when considering R600a refrigerant or R290 refrigerant as a flammable refrigerant, it is necessary to prevent the cause from the sliding part Burnt (burned) and other locked state (motor locked) motor current (motor current) abnormal rise caused by the fire (ignition), etc., but it should be removed from the countermeasures (2) (2) 200406546 is not enough. The present invention was created in consideration of the above-mentioned circumstances, and provides a state in which R 6 0 a refrigerant or R 2 9 0 refrigerant is the compression target refrigerant, in order to ensure long-term The purpose of the refrigerant compressor is to improve the safety while suppressing the abnormality of the motor current. (Means to solve the problem) The invention of the first patent application scope is R 6 0 0 a refrigerant or R 2 9 0 In the refrigerant compressor whose refrigerant is the compression target refrigerant, the above-mentioned refrigerant compressor system has two sliding mechanism parts that slide on each other, and the one component system contains more than 80% aluminum and 13 to 17% silicon. The refrigerant compressor is composed of aluminum alloy, and the other component is iron material. The invention of the second patent application scope is the refrigerant compressor described in the first patent scope, where The above-mentioned aluminum alloy system further contains 3 to 5% of copper, and 0. 2 to 0. 7% of magnesium (· magnesium) as its features. The invention concerning the third patent application scope is the same as the patent scope application! Refrigerant pressure Shrinking machine, in which the above-mentioned iron-based material is mainly composed of iron, and contains 2.5 ~ 4.0% of total carbon, and 1 ~ 3% of 5 'and 0.3 ~ 1.2% of magnesium are Refrigerant compressor with characteristics. The invention relating to item 4 of the patent application scope is the refrigerant compressor as described in item i of the patent application scope, in which-6- (3) (3) 200406546 is used to lubricate the above-mentioned sliding mechanism. It is characterized by using any one of a litho-series mineral oil, a naphthenic-series mineral oil, and an ester-based oil. The invention concerning item 5 in the scope of patent application is the refrigerant compressor as described in item 4 in the scope of patent application, in which the above-mentioned lubricating oil series 3 is 0.1 to 10% of a local fatty acid or vinegar-based oil agent. Its characteristics. The invention concerning item 6 in the scope of patent application is the refrigerant compressor as described in item 4 in the scope of patent application, wherein φ The above lubricating oil contains phosphorus or tungsten as an extreme-pressure additive and contains 0.1 to 5% is its characteristic. The invention concerning item 7 in the scope of patent application is the refrigerant compressor as described in item 1 in the scope of patent application, wherein at least one of the one component and the other component sliding on each other is characterized by applying manganese phosphate treatment. The invention related to the eighth patent application is a refrigerant compressor as described in any one of the first to seventh patent applications, wherein the above-mentioned sliding mechanism is a bearing mechanism, and the above-mentioned component constitutes the above-mentioned bearing mechanism. The bearing is characterized in that the other component is fitted to the main shaft of the bearing. [Embodiment] A suitable embodiment of the present invention will be described in detail below with reference to the drawings. Fig. 1 (a) shows a longitudinal sectional view of a first embodiment of the refrigerant compressor of the present invention. The first (b) diagram is not 90 degrees centered on the axis of the first diagram (a). (4) (4) 200 406 546 A side view showing a part at the same angle. Fig. 2 is an enlarged sectional view showing a frame of the refrigerant compressor of Fig. 1 and a main shaft embedded in the frame. Fig. 3 is a graph showing the relationship between the content rate of silicon (S i) and the endurance time in order to explain the effect of the first embodiment. In each of these figures, the bearing 1 housed inside the hermetic container 11 is a projecting portion where the hermetic container 11 and the same axial center portion protrude below, and a through hole is formed in the projecting portion to form a main portion. Bearing 3. A main shaft 2 is rotatably mounted in the main bearing 3, and a main shaft 2 is provided at the upper end of the main shaft 2 and a crank 4 protruding from the upper surface of the frame 1 and rotating eccentrically. The lower end of the main shaft 2 is protruded by the autonomous bearing 3, and the protruding portion is inserted into the shaft center of the rotor 7 constituting the motor. The rotor 7 is located outside the rotor 7. The stator 8 is integrally fixed to the frame 1, and is mounted on the bottom of the closed container 1 via a coil spring (not shown). 6 formed compression section. The rod of the piston 5 is combined with the eccentric movement of the crank 4 so that the piston # 5 is reciprocated. Lubricating oil 9 is stored in the lower part of the sealed container 11. The main shaft 2 lubricates the main bearing 3 with the lubricating oil as it rotates, and also performs the lubrication of the compression part. Furthermore, a connection terminal 10 for driving power supply is provided on the outer side of the sealed container 11. The operation of the refrigerant compressor configured as described above will be described below. Then talk about its material. When a voltage for driving power supply is applied to the connection terminal 10, turn -8- (5) (5) 200406546 and the sub-7 is rotated. At this time, the eccentric movement of the crank 4 of the main shaft 2 integrated with the rotor 7 is performed. The piston 5 is reciprocally driven. The piston 5 is driven back and forth to repeatedly suck, compress, and discharge the refrigerant, and in a refrigerating cycle (not shown), a low-pressure refrigerant is made into a high-pressure refrigerant. In this embodiment, by preventing long-term durability, it is possible to prevent burning (burnout) of the sliding portion and to suppress abnormal increase in motor current. Therefore, the main bearing 3 is made of aluminum alloy, and the main shaft 2 is made of iron-based material. Therefore, the inner peripheral surface of the spindle bearing 3 will often contact the spindle 2 through the oil film of the lubricant oil 9. At this time, the smaller the sliding friction between the aluminum alloy and the main shaft 2, in other words, the higher the coefficient of performance (COP: Coefficient of Of Performance), the lower the power consumption effect. In addition, sliding performance can be improved to improve abrasion resistance and durability. Figure 3 is a characteristic curve obtained by plotting the endurance time of each aluminum alloy with aluminum as the main component and mixed with silicon (Si) in various proportions. It can be seen in this curve A that the silicon content is in the range of 13.0 ~ 17.0% and the endurance time will be the largest. Fig. 4 is a characteristic curve of each coefficient of performance obtained by a test when the silicon content of an aluminum alloy is changed. From the characteristic curve B shown in the figure, it can be known that the content of silicon is more than 1 3.0%, and greatly exceeds a wide range of 1 7%, and the coefficient of performance is COPmax. The less the content rate is 13% or more than 25%, the lower the performance coefficient will be. Therefore, based on the experimental results of the endurance time shown in FIG. 3 and the experimental results of the coefficient of performance shown in FIG. 4, the content of silicon (S i) was set to a range of 1 3.0 to 1 7.0%. The main component of aluminum (A1) is specified as 80% or more, so that it can have the maximum wear resistance and durability. -9-(6) (6) 200 406 546 Next, this embodiment uses either a paraffin-based or a naphthenic-based mineral oil or an ester-based oil as the lubricating oil. When the main shaft 2 is rotated, the lubricating oil is sucked up from the bottom of the main shaft 2 to lubricate the main shaft 2 and the main shaft 3, relubricate the outer peripheral surface of the crank, spray the upper part of the crank, and lubricate the sliding part of the compression part. For paraffin-based or naphthenic-based mineral oil or ester-based oil, one or two of oil-based agents and pressure-resistant additives will be added. Fig. 5 is a graph showing the relationship between the durability time and the ratio of the addition of a higher fatty acid or an ester-based oily agent to various naphthene-based mineral oils and paraffin-based mineral oils at various ratios. The characteristic curve C indicates the characteristics of the naphthenic mineral oil, and the characteristic curve D indicates the characteristics of the paraffin-based mineral oil. Fig. 6 is a graph showing the relationship between the durability time and the ratio of adding naphthenic and paraffinic mineral oils as extreme pressure additives when phosphorus (P) or tungsten (W) is added in various proportions. . Characteristic curve of F series naphthenic mineral oil. Characteristic curve F is the characteristics of paraffin β-based mineral oil. As can be understood from the line graphs in Fig. 5 and Fig. 6, the addition amount of the oil-based agent is 0.1 ° /. In the above, the additive amount of the extreme pressure additive is 0.1 ~ 0.5%, so it can prolong the durability time and improve the durability at the same time. However, if the oily agent is added in an amount of more than 10%, it will adhere to the inner wall of the heat exchanger of the refrigerating cycle and reduce the heat exchange performance. Therefore, it should be less than 10%. Since the durability time characteristics of the ester mineral oil with respect to the addition amount of the oil-based agent and the extreme pressure-resistant additive are slightly the same as those of the paraffin-based mineral oil, -10-(7) (7) 200406546 is omitted. On the other hand, the main shaft 2 using an iron-based material is treated with manganese phosphate in the sliding portion. For example, when comparing the endurance time when the manganese phosphate treatment is applied and when the manganese phosphate treatment is not applied, as shown in FIG. 7, the endurance time when the manganese phosphate treatment is not applied is E1, and the endurance time when the treatment is applied The time is extended to E2 (> E1). Therefore, according to the first embodiment of the present invention, when R 6 0 0 a refrigerant or R 2 9 0 refrigerant is the compression target refrigerant, the abnormal increase in motor current can be suppressed by ensuring long-term durability, thereby improving safety. High-performance refrigerant compressors are also available. Fig. 8 is an enlarged cross-sectional view showing the structure of a compression section in the second embodiment of the refrigerant compressor of the present invention. In this example, the crank 4 is rotated eccentrically by the rotation of the main shaft 2 (refer to FIG. 2), and the piston 5 is reciprocated inside the cylinder 6 to perform suction, compression, and discharge of the refrigerant. In this example, the piston 5 and the cylinder 6 are sliding members. The piston 5 is made of aluminum alloy. The cylinder 6 is made of iron material, and these are often in contact with the oil film of the lubricant oil 9. At the same time, the smaller the sliding friction between the aluminum alloy and the cylinder 6 is, the higher the sliding performance (cop) can be improved. This has the effect of reducing power consumption. Therefore, as the piston 5, it is used as described above: the content of silicon (Si) ranges from 1 3.0 to 17%, and the aluminum alloy with more than 80% aluminum has the maximum wear resistance, durability, and The sliding part of the cylinder 6 is treated with manganese phosphate to further improve durability. -11-(8) (8) 200 406 546 Therefore, according to the second embodiment of the present invention, 'when R 6 0 0 a refrigerant or R 2 9 0 refrigerant is the refrigerant compression target refrigerant', it can be suppressed by ensuring long-term durability. The refrigerant current rises abnormally and the refrigerant compressor with high safety can be improved. Furthermore, copper (Cu) or magnesium (M g) is added to the aluminum alloy constituting each of the above-mentioned embodiments, so that the durability can be further improved. Fig. 9 shows that the endurance time when the content of silicon (Si) is set to 13 to 17% and the proportion of copper (Cu) or magnesium (Mg) is added is changed according to Examples 1 to 6, and the lines are shown. Graph (bar graph). At the same time, the endurance time when the content of silicon (Si) is 10% is used as a comparative example and the line diagram is used. From this figure, it can be seen that durability is further improved by adding copper (Cu) in an amount of 3 to 5% and magnesium (Mg) in an amount of 0.2 to 0.7%. In addition, in the above-mentioned iron-based materials, iron is the main component and the total carbon content is 2 · 5 ~ 4 · 0 ° /. , Silicon (S i) is 1 ~ 3%, manganese (Μη) is 0 · 3 ~ 1 · 2%, and sulfur (S) is 0 · 2% or less, silicon (Si) is φ 1 3 The compatibility of the aluminum alloy contained in the range of ~ 17% is very good, and the durability of the two members that slide with each other is also improved. (Effects of the Invention) It can be understood from the above description that according to the present invention, the R600a refrigerant or R2 90 refrigerant is a refrigerant pair. In the case of the case, the long-term durability can be ensured and the abnormal increase in motor current can be suppressed A refrigerant compressor with high safety can also be improved. -12- 200406546 〇) [Brief description of the drawings] · Figure 1 shows a longitudinal section view of the first embodiment of the refrigerant compressor of the present invention, and the section is sectioned at 90 degrees with the axis centered at a different angle. Side view of the display. Fig. 2 is an enlarged sectional view showing a frame of the refrigerant compressor of Fig. 1 and a main shaft embedded in the frame. Fig. 3 is a graph showing the relationship between the content rate of silicon xin (S i) and the endurance time in order to explain the effect of the first embodiment. FIG. 4 is a line chart showing the relationship between the content rate of silicon (S i) and the grade constant in order to explain the effect of the first embodiment. Fig. 5 is a graph showing the relationship between the addition ratio of the oily agent and the durability time in order to explain the effect of the first embodiment. Fig. 6 is a graph showing the relationship between the addition ratio of the extreme pressure additive and the resistance time in order to explain the effect of the first embodiment. Fig. 7 is a bar graph showing the difference between the case where manganese phosphate is applied to the sliding part and the case where it is not used to explain the effect of the first embodiment. Fig. 8 is an enlarged sectional view showing a second embodiment of the refrigerant compressor of the present invention and showing the structure of a compression section. Fig. 9 is a line diagram showing a modification of the refrigerant compressor of the present invention, and the difference in durability time when other elements are added to the aluminum alloy. [Symbol description] -13- (10) 200406546 1 Frame 2 Spindle 3 Main bearing 4 Crank 5 Piston 6 Cylinder 7 Rotor 8 Stator 9 Lubricant 10 Connection terminal 11 Closed container
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