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公开(公告)号：EP3406912A1
公开(公告)日：2018-11-28
申请号：EP18160576.7
申请日：2018-03-07
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
CPC分类号： F04D29/325 , F04D29/38 , F04D29/384 , F04D29/388 , F04D29/661 , F05B2240/30
摘要： A propeller fan includes: a hub having a side surface about a center axis; and a plurality of blades provided on the side surface of the hub. Each blade includes an inner peripheral portion positioned closer to a base portion of the each blade connected to the hub, and an outer peripheral portion positioned closer to an outer edge of the each blade. A ratio r/R between a radius r as a distance from the center axis to a boundary between the inner peripheral portion and the outer peripheral portion and a radius R as a distance from the center axis to the outer edge of each blade is equal to or lower than 0.4. A relational expression of V1
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公开(公告)号：EP3355021A1
公开(公告)日：2018-08-01
申请号：EP18154267.1
申请日：2018-01-30
发明人： ITAKURA, Shunji , HORIGUCHI, Ken , FUJI, Toshiyuki , SHIMADA, Sota , FUNADA, Kazuya , KOMINE, Kenji , TANAKA, Junya
CPC分类号： F24F1/26 , C09K5/045 , F24F1/14 , F25B9/002 , F25B39/04 , F28D7/082 , F28F1/40 , F28F13/187 , F28F2210/06
摘要： A heat exchanger includes: a heat transfer pipe (232) in which refrigerant flows; and a spiral groove (235) formed at an inner peripheral surface of the heat transfer pipe. A height of an inner wall of the groove in a radial direction of the heat transfer pipe is equal to or greater than 0.1 [mm], and when a wetted edge length of the heat transfer pipe is S, an inclination angle between a pipe axis direction of the heat transfer pipe and a longitudinal direction of the groove in a section of the heat transfer pipe parallel with the pipe axis direction is θ, and a length of the heat transfer pipe is L, the inclination angle θ is an acute angle, and a wetted area S × L/cosθ of the heat transfer pipe satisfies S × L/cosθ ≥ 0.5 [m2].
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公开(公告)号：EP3889439A1
公开(公告)日：2021-10-06
申请号：EP19890168.8
申请日：2019-11-22
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
IPC分类号： F04D29/38
摘要： An inner peripheral blade (15) is formed at an inner peripheral part of a blade of a propeller fan. A plurality of blade elements of the inner peripheral blade include a first blade element (15a) arranged on a front edge (12-F) side of the blade, and a second blade element (15b) arranged to be adjacent to the first blade element on a rear edge (12-R) side of the blade. On the blade surface part (12c), a first opening (16) passing through the blade surface part from a negative pressure side toward a positive pressure side is provided between the first blade element and the second blade element. When an apex projecting from a positive pressure surface (12p) of the first blade element is A, a distance from a center axis (O) to the apex A is r1, and a point having the distance r from the center axis on a front edge in a rotation direction of the first blade element is B, a chord length (W1) of the first blade element along a direction connecting the apex A with the point B, is equal to or larger than a chord length (W2) of the second blade element along a direction connecting an apex C with a point D when an apex projecting from a positive pressure surface of the second blade element is C, a distance from the center axis to the apex C is r2, and a point having the distance r2 from the center axis on a front edge in a rotation direction of the second blade element is D.
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公开(公告)号：EP3355021B1
公开(公告)日：2020-11-25
申请号：EP18154267.1
申请日：2018-01-30
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公开(公告)号：EP3889441A1
公开(公告)日：2021-10-06
申请号：EP19890810.5
申请日：2019-11-22
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
IPC分类号： F04D29/38
摘要： A propeller fan includes a hub (11) including a side surface around a center axis (O), and a plurality of blades (12) disposed on the side surface of the hub. An inner peripheral blade extending from the side surface of the hub toward an outer edge side is formed on a positive pressure surface (12p) of a blade surface part (12c) at an inner peripheral part of each of the blades. The inner peripheral blade includes a plurality of blade elements that project from the positive pressure surface of the blade surface part toward a positive pressure side (P), and are arranged side by side in a rotation direction (R) of the blade. When an apex of a first blade element projecting from the positive pressure surface is A, a distance from the center axis to the apex A is r, and a point having the distance r from the center axis on a front edge in the rotation direction of the first blade element is B, the first blade element (15a) among the blade elements that is arranged on a front edge side in the rotation direction of the blade, is formed to have a blade angle (θ) equal to or larger than a predetermined first angle and equal to or smaller than a second angle that is larger than the first angle, the blade angle (θ) being formed by a direction along a chord of the first blade element along a direction that connects the apex A with the point B, and a plane orthogonal to the center axis.
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公开(公告)号：EP3770440A1
公开(公告)日：2021-01-27
申请号：EP19771495.9
申请日：2019-02-15
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
摘要： A propeller fan includes a hub having a rotation axis, and a plurality of blades provided in a circumference direction of the hub, in which a blade includes an inner peripheral portion that is located on a side of a base within a portion from the base connected to the hub to an outer edge, and an outer peripheral portion that is located on a side of the outer edge, the outer peripheral portion is formed as one blade surface, the inner peripheral portion includes a plurality of blade elements arranged at a predetermined interval, a ratio r/R in which a radius r which is a distance from the central axis to a boundary between the inner peripheral portion and the outer peripheral portion and a radius R which is a distance from the central axis to the outer edge is 0.4 or less, and when a wind speed at the outer peripheral portion is V1 and a wind speed at the inner peripheral portion is V2, a relational formula of V1 ≤ V2 × 2.0 is established.
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公开(公告)号：EP3889440A1
公开(公告)日：2021-10-06
申请号：EP19890563.0
申请日：2019-11-22
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
IPC分类号： F04D29/38
摘要： A propeller fan includes a hub (11) including a side surface around a center axis (O), and a plurality of blades disposed on the side surface of the hub. An inner peripheral blade extending from the side surface of the hub toward an outer edge is formed on a positive pressure surface (12p) of a blade surface part (12c) at an inner peripheral part of each of the blades. A plurality of blade elements of the inner peripheral blade include a first blade element (15a) arranged on a front edge side in a rotation direction of the blade, and a second blade element (15b) arranged to be adjacent to the first blade element on a rear edge side in the rotation direction of the blade. A first opening (16), which passes through the blade surface part from a negative pressure side toward a positive pressure side (P), is provided between the first blade element and the second blade element on the blade surface part. A space between an outer edge of the first blade element extended from the side surface toward an outer edge side of the blade, and an outer edge of the second blade element extended from the side surface toward the outer edge side of the blade on the positive pressure surface side, is opened from the side surface in a radial direction of the blade surface part, so that an air current coming from the negative pressure side toward the positive pressure side through the first opening, flows from the first opening toward the outer edge side of the blade along the positive pressure surface.
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公开(公告)号：EP3889438A1
公开(公告)日：2021-10-06
申请号：EP19890036.7
申请日：2019-11-22
发明人： SAWADA, Hirotaka , FUNADA, Kazuya
IPC分类号： F04D29/38
摘要： A propeller fan includes a hub (11) including a side surface (11a) around a center axis (O), and a plurality of blades disposed on the side surface of the hub. An inner peripheral blade, which extends from the side surface of the hub toward an outer edge side, is formed on a positive pressure surface of a blade surface part at an inner peripheral part of each of the blades. The inner peripheral blade projects from the positive pressure surface of the blade surface part toward a positive pressure side, includes a front edge (15a-F) in a rotation direction (R) of the inner peripheral blade that is formed in a curved shape to be separated from a reference line (S1) toward the front edge side in the rotation direction of the blade, the reference line connecting a lower end (E3) positioned on the positive pressure surface at a base end of the inner peripheral blade connected to the side surface of the hub with an outer edge (E1) of the inner peripheral blade that is extended from the side surface toward an outer edge side of the blade and positioned on the positive pressure surface, and satisfies H/L ≥ 0.1, where L is a length of the reference line and H is a maximum value of a distance between the reference line and the front edge of the inner peripheral blade.
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公开(公告)号：EP3354900A1
公开(公告)日：2018-08-01
申请号：EP18154261.4
申请日：2018-01-30
发明人： ITAKURA, Shunji , HORIGUCHI, Ken , FUJI, Toshiyuki , SHIMADA, Sota , FUNADA, Kazuya , KOMINE, Kenji , TANAKA, Junya
IPC分类号： F04C23/00 , F04C18/356
CPC分类号： F25B31/026 , C09K5/045 , C09K2205/126 , F04C13/001 , F04C18/3564 , F04C23/008 , F04C2210/26 , F04C2210/263 , F04C2230/231 , F04C2240/30 , F04C2240/806 , F25B2400/07 , F25B2400/19
摘要： A rotary compressor (21)includes: a closed upright cylindrical compressor housing (10) including an upper portion (10A) provided with a discharge section (41) of refrigerant and a body portion (10B) provided with an intake section (42) of the refrigerant; a compression section (12) disposed at a lower part in the compressor housing and configured to compress the refrigerant suctioned by the intake section to discharge the refrigerant from the discharge section; and a motor (11) disposed at an upper part in the compressor housing and configured to drive the compression section. The motor has a rotor disposed on an inner side and a stator disposed on an outer side, the refrigerant is HFO1123 refrigerant or a refrigerant mixture containing the HFO1123 refrigerant, and an inner welded portion (161, 167) formed by welding using flux is provided within a projection area of the rotor at the upper portion of the compressor housing.
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10.发明公开MIXTURE REFRIGERANT AND AIR CONDITIONER USING THE SAME 审中-公开KÄLTEMITTELMISCHUNGUND KLIMAANLAGE DAMIT
公开(公告)号：EP2963096A1
公开(公告)日：2016-01-06
申请号：EP15172596.7
申请日：2015-06-17
IPC分类号： C09K5/04
CPC分类号： C09K5/04 , C09K5/045 , C09K2205/126 , C09K2205/22
摘要： A mixture refrigerant includes: 50 wt.% to 70 wt.% of R32, R1234ze, and R125. An air conditioner includes a mixture refrigerant containing 50 wt.% to 70 wt.% of R32, R1234ze, and R125.
摘要翻译： 混合制冷剂包括：R32，R1234ze和R125的50重量％至70重量％。 空调器包括含有50重量％至70重量％的R32，R1234ze和R125的混合制冷剂。
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