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公开(公告)号：JP2001140796A
公开(公告)日：2001-05-22
申请号：JP32800599
申请日：1999-11-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , KIDA TAKUMI , TATSUI HIROSHI , TANIGUCHI MITSUNORI
Abstract: PROBLEM TO BE SOLVED: To high-efficiently recover various vortexes generated due to drift of a flow of air passing through an impeller and generated at a vane end and to suppress deterioration of aerodynamic performance and the increase of the generation of disturbance noise. SOLUTION: An outer wall 11 to surround the outer peripheries of two plate- form mouth rings 9 and 10 to partition the suction side and the discharge side from each other is situated on the outer peripheral side of an impeller 8. A recessed space part 13 having an opening part 12 positioned opposite to the vane of the impeller 8 is formed between the two plate-form mouth rings 9 and 10. When a flow of air passing through the impeller 8 effects drift as a result of the sectional area of a recess space part 13 being different at a whole periphery, various vortexes generated at a vane end is high-efficiently recovered by various recess space parts 13 to perform a role of an air circulation flow passage, and deterioration of aerodynamic performance and the increase of the generation of disturbance noise are suppressed.
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公开(公告)号：JP2001124459A
公开(公告)日：2001-05-11
申请号：JP30506599
申请日：1999-10-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANIGUCHI MITSUNORI , KIDA TAKUMI , MORISHITA KENICHI , TATSUI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To obtain a heat carrying circuit for carrying a fluid, e.g. air, into a forced air circulation cooling apparatus, e.g. a refrigerator or a freezer, while exchanging heat with refrigerant in which cooling capacity is enhanced by making uniform the air volume in the arranging direction of fins of a finned heat exchanger. SOLUTION: A bypass air duct 8 is provided between a finned heat exchanger 2 and a wall 7a while increasing the cross-sectional area gradually from the upstream side projecting part of a fan unit toward a direction parallel with a heating tube 4. Consequently, air volume distribution is made uniform in the arranging direction of fins 3 and cooling capacity can be enhanced. Furthermore, frost is formed uniformly in the arranging direction of fins 3 and the defrost operation time can be shortened.
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公开(公告)号：JPH11201095A
公开(公告)日：1999-07-27
申请号：JP455298
申请日：1998-01-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration of aerodynamic and noise performance in a low ventilation resistance condition, and suppress aerodynamic performance in a high ventilation resistance condition to cope with action point conditions largely changed based on operation conditions in addition to equipment installation conditions in a blower of an axial flow type or the like to be mounted on equipment. SOLUTION: For a blower 13, in a low ventilation resistance condition, an air current flows blades, and a main component of the air current is an axial direction component, so it flows from the outer circumferential side 5d of a blade 5 roughly in an axial direction to be blown along an inner wall surface on the discharge side 16 of an orifice 14. In a high ventilation resistance condition, the axial direction component of the air current is reduced between blades, but a radial direction component is increased to be discharged from the blade 5, so it flows toward the discharge side 16 of the orifice 14 to pass a groove 17 provided on the discharge side 16, thereby the air current colliding with the inner wall surface on the discharge side 16 to be inhibited is reduced.
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公开(公告)号：JPH09222097A
公开(公告)日：1997-08-26
申请号：JP5679996
申请日：1996-02-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU , YABUSHITA AKIHIRO
IPC: F04D29/44
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration of blast performance of an impeller and the increase of blast noise thereof, in a centrifugal blower used in an air- conditioner. SOLUTION: In the vicinity of an inner wall surface which is enlarged from the minimum inside diameter of the outlet end part 7b of a suction ring 7 to a radial direction by arranging a plate-form ring 8 in the vicinity of the inner wall of the outlet end part 7b of a suction ring 7, a suction air flow is forcibly adhered to the outlet end part 7b of the suction ring 7 by the plate-form guide ring 8. An air flow flows from the outlet end part 7b toward the suction part end part 4a of a side plate 4 and after the air flow is adhered to the suction part end part 4a once and flows in. This constitution suppresses peel of the air flow on the wall surface of the side plate 4.
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公开(公告)号：JPH08296925A
公开(公告)日：1996-11-12
申请号：JP10547395
申请日：1995-04-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI
Abstract: PURPOSE: To obtain refrigerating equipment which checks propagation of the vibration of a refrigerant pipe caused by the pressure pulsation of a two-phase flow of gas and liquid jetted at a high velocity from an outlet of a capillary tube, to the main body of an evaporator, and suppresses a sound of flow of a refrigerant released from the main body of the evaporator. CONSTITUTION: Circular grooves are formed by machining in the outer peripheral surface 9b of a second introducing pipe enclosing a first introducing pipe connected to a capillary tube 4, while a plurality of linear projections 10 are formed on the inner peripheral surface 9a thereof, and fore ends 10a of the linear projections 10 are brought into contact with the outer peripheral surface 8b of the first introducing pipe 8.
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Patent Agency Ranking
公开(公告)号：JPH08296924A
公开(公告)日：1996-11-12
申请号：JP9830195
申请日：1995-04-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI
IPC: F25B41/00
Abstract: PURPOSE: To suppress pressure pulsation of a two-phase jet flow of gas and liquid jetted at a high velocity from an outlet of a capillary tube and to prevent generation of a sound of flow of a refrigerant by providing a foam metal body inside an introducing pipe connecting a pressure reducing unit with an evaporator and by bringing an outlet of the pressure reducing unit into contact with the foam metal body. CONSTITUTION: At the time of the operation of refrigerating equipment, refrigerant gas discharged from a compressor releases heat and liquefies in a condenser, and after the liquid refrigerant is subjected to pressure reduction in a capillary tube 4 being a pressure reducing unit, it flows into an evaporator 5 and cools an ambient atmosphere on the occasion when it is evaporated herein. In this case, a foam metal body 8 is held in an introducing pipe 6 connecting the capillary tube 4 with the evaporator 5 and the body is brought into contact with an outlet 4a of the capillary tube 4. By this construction, a two-phase jet flow of gas and liquid is formed and expands while the refrigerant is diffused gradually in the foam metal body 8 on the occasion when it flows out into the introducing pipe 6 from the capillary tube 4. Thereby the two-phase jet flow of gas and liquid is subdivided and decelerated and pressure pulsation is suppressed.
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公开(公告)号：JPH08240361A
公开(公告)日：1996-09-17
申请号：JP4702195
申请日：1995-03-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU , YABUSHITA AKIHIRO
Abstract: PURPOSE: To provide a freezer device in which a high speed gas-liquid two-phase flow discharged out of a capillary-tube discharging port is restricted, the gas- liquid two-phase flow is prevented from being quite disturbed to flow, and refrigerant flowing sound is also restricted. CONSTITUTION: A branch circuit 8 having two blowing flow passages 9 directly connected to a discharging port 4a of a capillary tube 4 which are symmetrically installed in a vertical orientation is arranged at an inlet side 6a of a refrigerant pipe 6.
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公开(公告)号：JPH08159610A
公开(公告)日：1996-06-21
申请号：JP29947994
申请日：1994-12-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU , YABUSHITA AKIHIRO
Abstract: PURPOSE: To provide a refrigerating device that inhibits the of both pressure pulsation produced by a high speed two gas and liquid phase flow and vibrations produced by the pressure pulsations from the outlet of a decompressor to a vibrator and checks down the generation of a refrigerant flowing sound discharged from the vaporizer main body. CONSTITUTION: A part of an inlet pipe 8, which is directly connected to a capillary tube 4, is formed in the shape of a coil while the outlet is communicated with a refrigerant pipeline 5a of a vaporizer.
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公开(公告)号：JPH07305699A
公开(公告)日：1995-11-21
申请号：JP9617194
申请日：1994-05-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUZUKI SOUZOU , KIDA TAKUMI , YABUSHITA AKIHIRO
IPC: F04D29/28
Abstract: PURPOSE:To improve blowing performance by providing an inclined part on a main plate, and to enhance productivity by integrally forming the main plate and an impeller plate out of resin materials and high frequency welding a side plate, so as to improve rotational strength of the blower. CONSTITUTION:An inclined part 2a is provided on an attaching part of a blade 3 to a main plate 2 in relation to a main plate bottom surface, and a projecting part 9 is provided on the inclined part 2a on the opposite surface to the surface provided with a blade 3 of the main plate 2, and in the position corresponding to the extension line of the front edge of the blade 3, and the bottom surface of the projecting part 9 is formed parallel to the bottom surface of the main plate 2, and a ring-like side plate 4 made of resin materials such as ABS is welded to the upper end of the blade 3, so as to form an impeller 1.
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公开(公告)号：JPH074392A
公开(公告)日：1995-01-10
申请号：JP14345593
申请日：1993-06-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU , YABUSHITA AKIHIRO
Abstract: PURPOSE:To suppress air flow blown off to the outer periphery from the pressure face side and inhibit the degradation of blowing performance, the separation of flow on the discharge side and the increase of blowing noise. CONSTITUTION:In a blower 1, a hub 4 is fitted to a motor 2, an impeller 3 formed of plural blades 5 is disposed around the hub 4, and the outer periphery of the blade 5 is surrounded by an orifice 6. In this case, the pressure face side 5b1 in the outer peripheral part 5b of the blade 5 is additionally provided with a protruding part 8 of approximately triangular cross section in the radial direction. The action of the protruding part 8 suppresses air flow W2 blown off to the outer periphery from the pressure face side 5b1 and prevents the air flow W2 from obstructing the air flow W1 on the negative pressure face side 5b2. The action of the protruding part 8 also restrains flow from becoming large at the outer periphery on the negative pressure face side 5b2 of an outer peripheral part 5b, not surrounded by the orifice 6, of the blade 5 and suppresses the separation of flow on the discharge side 5c.
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