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    • 1. 发明专利
    • Screw compressor
    • 螺旋压缩机
    • JP2010242746A
    • 2010-10-28
    • JP2010057915
    • 2010-03-15
    • Daikin Ind Ltdダイキン工業株式会社
    • SHIKANO SHIGEHARUGOTO NOZOMIMATSUMOTO NORIOGOTO HIDEYUKIMIYAMURA HARUNORI
    • F04C18/52F04C29/02
    • F04C18/16F04C18/52F04C29/0014F04C29/021F04C29/028
    • PROBLEM TO BE SOLVED: To improve operation efficiency in a screw compressor, by reducing required power for driving a screw rotor in a small state of operation capacity of the screw compressor. SOLUTION: A capacity adjusting slide valve (70) is arranged in the screw compressor (1). In a bearing holder (35), a slender recessed part (122) formed on a sliding contact surface with the slide valve (70) becomes the outlet end (121) of a fixed side oil passage (120). In the slide valve (70), the inlet end (131) of a movable side oil passage (130) opens on a sliding contact surface with the bearing holder (35), and its outlet end (132) opens on a sliding contact surface with the screw rotor (40). In the movable side oil passage (130), an inlet side part branches off into two branch passages (133 and 134). In this screw compressor (1), a state of opening both branch passages (133 and 134) in the fixed side oil passage (120) and a state of opening only the first branch passage (133) in the fixed side oil passage (120), are switched by a position of the slide valve (70). COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提高螺杆式压缩机的运转效率,通过在螺杆式压缩机的小的运行能力下减少驱动螺杆转子所需的动力。 解决方案:螺杆式压缩机(1)中设有容量调节滑阀(70)。 在轴承座(35)中,形成在与滑阀(70)的滑动接触面上的细长凹部(122)成为固定侧油路(120)的出口端(121)。 在滑动阀70中,可移动侧油路130的入口端131与轴承保持架35的滑动接触面开口,其出口端132在滑动接触面 与螺杆转子(40)。 在可动侧油路(130)中,入口侧部分分成两个分支通路(133,134)。 在该螺杆式压缩机(1)中,在固定侧油路(120)中的两个分支通路(133,134)的开启状态和仅在固定侧油路(120)中的第一分支通路(133) )通过滑阀(70)的位置切换。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Manufacturing method for screw rotor
    • 螺旋转子制造方法
    • JP2009281181A
    • 2009-12-03
    • JP2008131905
    • 2008-05-20
    • Daikin Ind Ltdダイキン工業株式会社
    • MATSUMOTO NORIOOKADA TADASHIGOTO HIDEYUKI
    • F04C18/52F04C29/00
    • PROBLEM TO BE SOLVED: To suppress axial displacement of spiral grooves with respect to the rotating shaft of a screw rotor. SOLUTION: This manufacturing method for the screw rotor includes: a supporting step of rotatably supporting a screw rotor base material 120 around the rotating shaft A; a first machining step of machining the spiral grooves 41 and first and second reference surfaces 48a, 48b as columnar surfaces with the rotating shaft A as a center from the screw rotor material 120 while the screw rotor material 120 supported in the supporting step is rotated around the rotating shaft A; a resupporting step of resupporting the screw rotor material 120 with the reference surfaces 48a, 48b as basis; and a second machining step of machining an insertion hole 47 for inserting a shaft member from the screw rotor material 120 supported in the resupporting step so that the axis center of the insertion hole 47 matches the axis centers of the first and second reference surfaces 48a, 48b. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:抑制螺旋槽相对于螺杆转子的旋转轴的轴向位移。 螺杆转子的制造方法包括:支承工序,其将螺杆转子基材120可旋转地支承在旋转轴A的周围; 将螺旋槽41和第一和第二基准面48a,48b作为圆柱面进行加工的第一加工工序,将螺旋转子材料120支撑在支撑台阶上的螺旋转子材料120绕螺旋转子材料120旋转 旋转轴A; 以参考表面48a,48b为基础重新支撑螺杆转子材料120的重新支撑步骤; 以及第二加工步骤,加工用于将轴构件从支撑在再支撑台阶中的螺杆转子材料120插入的插入孔47,使得插入孔47的轴心与第一和第二参考表面48a的轴心匹配, 48b。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Screw compressor
    • 螺旋压缩机
    • JP2010285973A
    • 2010-12-24
    • JP2009142659
    • 2009-06-15
    • Daikin Ind Ltdダイキン工業株式会社
    • MATSUMOTO NORIOGOTO NOZOMISHIKANO SHIGEHARUGOTO HIDEYUKIMIYAMURA HARUNORI
    • F04C18/16F04C18/107
    • F04C18/52F04C28/12F04C28/26F04C2270/17
    • PROBLEM TO BE SOLVED: To provide a screw compressor including a slide valve for regulating the operation capacity and improving the operation efficiency when the operation capacity is set at a small value. SOLUTION: In a casing of the screw compressor, the slide valve (70) is arranged at the side of a screw rotor (40). The casing is formed with a bypass passage (33) for bringing a fluid chamber (23) into communication with a low-pressure space. When the slide valve (70) slides, the size of an opening (34) of the bypass passage (33) in an inner peripheral surface (35) of a cylindrical wall (30) varies and the operation capacity of the screw compressor varies. In the slide valve (70), its end face (P2) is inclined to be along an extending direction of a spiral groove (41) of the screw rotor (40). A seat face (P1) of the cylindrical wall (30) facing the end face (P2) of the slide valve (70) is parallel to the end face (P2) of the slide valve (70). COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种螺杆式压缩机,其包括用于调节操作能力的滑阀,并且当操作能力设定在较小值时提高操作效率。 解决方案:在螺杆式压缩机的壳体中,滑阀(70)布置在螺杆转子(40)的侧面。 壳体形成有用于使流体室(23)与低压空间连通的旁通通道(33)。 当滑阀70滑动时,圆筒壁30的内周面35内的旁通通路33的开口34的尺寸变化,螺杆式压缩机的运转能力发生变化。 在滑阀70中,其端面(P2)沿螺杆转子(40)的螺旋槽(41)的延伸方向倾斜。 面对滑阀(70)的端面(P2)的圆筒壁(30)的座面(P1)平行于滑阀(70)的端面(P2)。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • スクリュー圧縮機
    • 螺旋压缩机
    • JP2014202071A
    • 2014-10-27
    • JP2013075646
    • 2013-04-01
    • ダイキン工業株式会社Daikin Ind Ltd
    • FUJIWARA HIDEKIGOTO NOZOMIMATSUMOTO NORIO
    • F04C18/52F04C18/16F04C28/24F04C29/12
    • 【課題】比較的簡単な構成で、シリンダの背面室と高圧空間とを繋ぐ供給孔に詰まった異物を除去する。【解決手段】吐出管(30)における逆止弁(30a)の下流側と、シリンダ(81)の背面室(81b)とが、バイパス通路(31)で接続される。バイパス通路(31)には、開閉弁(33)が接続される。スクリューロータ(40)の回転動作中には、開閉弁(33)が閉じられて吐出管(30)からバイパス通路(31)への高圧冷媒の流通が遮断される。スクリューロータ(40)の回転停止時には、開閉弁(33)が開かれて高圧冷媒の流通が許可される。【選択図】図3
    • 要解决的问题:以简单的结构除去连接气缸后室和高压空间的供气孔堵塞的异物。解决方案:排气管(30)中止回阀(30a)的下游侧, 和气缸(81)的后室(81b)通过旁路通路(31)连接。 开闭阀(33)与旁通通路(31)连接。 在螺杆转子(40)的旋转操作期间,开闭阀(33)被关闭,并且高压制冷剂从排出管(30)分配到旁通通道(31)被切断。 在螺杆转子(40)的旋转停止中,打开开关阀(33)并允许高压制冷剂的分配。
    • 7. 发明专利
    • Screw compressor
    • 螺旋压缩机
    • JP2014025435A
    • 2014-02-06
    • JP2012167082
    • 2012-07-27
    • Daikin Ind Ltdダイキン工業株式会社
    • MATSUMOTO NORIOMIYAMURA HARUNORI
    • F04C18/52F04C29/12
    • PROBLEM TO BE SOLVED: To improve reliability of a screw compressor by securing a clearance between a screw rotor and a cylinder portion after stop of electric conduction to a motor to prevent both of them from being damaged.SOLUTION: High-pressure refrigerant passages (61, 64) are formed outside of the cylinder portion (30) receiving the screw rotor (40) in a casing (10) of the screw compressor (1). Discharge spaces (26, 27) communicated with a discharge port (25) are connected to a high-pressure space (S2) through the high-pressure refrigerant passages (61, 64). A bearing fixing plate (34) partitioning the discharge spaces (26, 27) and the high-pressure space (S2) is provided with through holes (81) on positions corresponding to the discharge spaces (26, 27). Check valves (81) are mounted on the through holes (81). After the stop of electric conduction to the motor, a refrigerant in the high-pressure space (S2) flows into the discharge spaces (26, 27) through the check valves (81).
    • 要解决的问题:通过在停止对电动机的导电之后确保螺杆转子和气缸部分之间的间隙来提高螺杆式压缩机的可靠性,以防止它们被损坏。解决方案:高压制冷剂通道(61 ,64)形成在螺杆式压缩机(1)的壳体(10)中的容纳螺杆转子(40)的缸部(30)的外侧。 与排出口(25)连通的排出空间(26,27)通过高压制冷剂通路(61,64)与高压空间(S2)连接。 分隔排出空间26,27和高压空间S2的轴承固定板34在与排出空间26,27对应的位置设有通孔81。 止回阀(81)安装在通孔(81)上。 在电动机停止导通之后,高压空间(S2)中的制冷剂通过止回阀(81)流入排放空间26,27。
    • 8. 发明专利
    • Gate rotor and screw compressor
    • 门控转子和螺杆压缩机
    • JP2010270728A
    • 2010-12-02
    • JP2009125158
    • 2009-05-25
    • Daikin Ind Ltdダイキン工業株式会社
    • MATSUMOTO NORIOSHIKANO SHIGEHARUUENO HIROMICHIGOTO NOZOMI
    • F04C29/00F04C18/52
    • PROBLEM TO BE SOLVED: To provide a gate rotor capable of improving yield strength to back pressure while holding compression performance. SOLUTION: An elastic modulus of an outside part 30A of a gate rotor body 30 is larger than an elastic modulus of an inside part 30B of the gate rotor body 30. Since the elastic modulus of the inside part 30B is small, the inside part 30B is easily elastically deformed by back pressure, and prevents a deficit of the gate rotor 3 by improving yield strength to the back pressure. While, since the elastic modulus of the outside part 30A is large, the outside part 30A is hardly elastically deformed by the back pressure, and can hold the seal function of a compression space C. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够在保持压缩性能的同时提高屈服强度以获得背压的门转子。 解决方案:门转子体30的外部部分30A的弹性模量大于门转子体30的内部部分30B的弹性模量。由于内部部分30B的弹性模量小, 内部30B容易通过背压而弹性变形,并且通过提高对背压的屈服强度来防止门转子3的缺陷。 而由于外部部件30A的弹性模量大,所以外侧部件30A几乎不会因背压弹性变形,能够保持压缩空间C的密封功能。(C)2011,JPO&INPIT