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公开(公告)号：JP2003194440A
公开(公告)日：2003-07-09
申请号：JP2001393441
申请日：2001-12-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： ONISHI ICHIRO , MASAKU MASATOSHI , MORIKAWA YUKIO , KIDA TAKUMI , TATSUI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To attain a feed water control suitable for an automatic ice-making device which feeds water into two ice-trays so as to make ice. SOLUTION: In an automatic ice-making device which supplies water from a water-filled feed water tank 11 to two ice-trays (a first ice-tray 26a, a second ice-tray 26b) provided in an atmosphere below the freezing point through a pump 24 so as to make ice, when feeding water, at first the water is supplied to a specific ice-tray (the first ice-tray 26a), and even in the worst case where a water level of the feed water tank 11 is low and insufficient water is supplied, the amount may be caused to exceed that of the other ice-tray (the second ice-tray 26b) so that the completion of ice-making of the other ice-tray (the second ice-tray 26b) may be recognized upon completion of ice-making of the specific ice-tray (the first ice-tray 26a). Even though two ice-trays are provided, one ice-tray may only be managed, so that its structure is simplified at a low cost. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2001140797A
公开(公告)日：2001-05-22
申请号：JP32262299
申请日：1999-11-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： TATSUI HIROSHI , KIDA TAKUMI , MORISHITA KENICHI , TANIGUCHI MITSUNORI
Abstract: PROBLEM TO BE SOLVED: To prevent separation of an air flow from a guide and suppress deterioration of noise performance when an air passage between the slope of a guide mounted downstream from an impeller and the discharge surface of a fan casing is operated as a diffuser. SOLUTION: A guide 10 situated in the vicinity of an impeller 4 and vertically to the rotary shaft of an impeller 4 and gradually increased in diameter from approximately the same diameter as diameter of the end face, situated downstream, of the hub part 3 of the impeller 4 is mounted in a position situated downstream from the impeller 4. An annular groove 13 having a central axis being the rotary shaft of the impeller 4 is formed in the slope of the guide 10. The groove of the slope of the guide 10 is brought into a negative pressure, an air flow is attracted to the slope of the guide 10, separation of an air flow is suppressed, and deterioration of noise performance is prevented from occurring.
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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：JP2001304195A
公开(公告)日：2001-10-31
申请号：JP2000120793
申请日：2000-04-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , KIDA TAKUMI , TATSUI HIROSHI , TANIGUCHI MITSUNORI
Abstract: PROBLEM TO BE SOLVED: To efficiently suck and discharge a portion of an air flow, passing through an impeller, of which a radial component is large by a bag-like space provided on an outer periphery of the impeller, to inhibit a reduction of actual discharge effective air amount of the impeller and to sufficiently inhibit an air amount reduction of a fan. SOLUTION: Since a portion of an air flow X, passing through an impeller 8, of which a radial speed component is large is efficiently sucked and discharged at a rotation flow circulation space 11 by the rotation flow circulation space 11 and a plurality of pillars 13 disposed in the rotation flow circulation space 11 and approximately radially extending from an opening edge 12, a reduction of actual discharge effective air amount of the impeller 8 is inhibited and an air amount reduction of a fan 14 is sufficiently inhibited.
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Patent Agency Ranking
公开(公告)号：JP2000234600A
公开(公告)日：2000-08-29
申请号：JP9630199
申请日：1999-04-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIDA TAKUMI , SUZUKI SOUZOU , TATSUI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To suppress a reverse flow of an air current in an impeller through a gap between a plurality of adjoining blades in an axial position other than the main plate side of the impeller in the vicinity of the tongue of a casing and to suppress lowering of aerodynamic performance of a multiblade blower and the increase in the generation of disturbance noise. SOLUTION: This blower shields and suppresses a flow F2 reversely flowing from the air outlet side on the main place 3 side of an impeller 2 by the extension part 9a in a counterclockwise direction of a tongue part 9. Thus, the flow is not confluent with a strong flow F1 discharged through a gap between adjoining blades 5 other than the vicinity on the main plate 3 side of the impeller 2 and having a strong peripheral component, the two flows are not concentrated at the extension part 9a and the occurrence of a reverse flow in the impeller 2 through a gap through the adjoining blades 5 is suppressed. Further, since a pressure on the air outlet side of the extension part 9a of the tongue part 9 is decreased to a value lower than that on the impeller 2 side, the strong flow F1 of a peripheral component flows around a gap between the extension part 9a of the tongue part 9 and the side plate 6b of a casing 6 toward the air outlet, whereby the increase of an amount of a reverse flow from the inside of a suction port 7 to the interior of the impeller 2 through the side plate 4 side is suppressed.
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公开(公告)号：JP2003194443A
公开(公告)日：2003-07-09
申请号：JP2001400160
申请日：2001-12-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： TATSUI HIROSHI , YAMATO KAZUE , ADACHI TADASHI , ONISHI ICHIRO
IPC: F25C1/24
Abstract: PROBLEM TO BE SOLVED: To provide a freezer and refrigerator equipped with an automatic ice making device capable of accurately supplying the water to a plurality of ice making trays individually in accordance with the conditions of the respective trays. SOLUTION: The freezer and refrigerator includes a first refrigerating chamber 2 furnished with a water tank 16 and a water supply pump 18, an ice making chamber 5 furnished with a plurality of ice making trays 11 and 12 and a drive device 13, and a second refrigerating chamber 7 positioned between the first refrigerating chamber 2 and ice making chamber 5, and further a selector valve 19 installed in the second refrigerating chamber 7, wherein the water in the tank 16 fed by the pump 18 is led only to that water supply path (the first water supply pipe 21a or second water supply pipe 21b) corresponding to the specified tray whereto the water supply should take place by the selector valve 19, and because the specified quantity of water is supplied to the specified tray, an accurate water supply can be made to the individual trays 11 and 12 in accordance with the conditions of the respective trays while one water tank 16 and one water supply pump 18 are used. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2000179496A
公开(公告)日：2000-06-27
申请号：JP35564898
申请日：1998-12-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： TATSUI HIROSHI , SUZUKI SOUZOU , KIDA TAKUMI
Abstract: PROBLEM TO BE SOLVED: To inhibit a reduction of discharge efficiency of an air by an impeller and a deterioration of a blowing performance and to inhibit an increase of a noise by a difference of a flow speed of an inflow air flow flowing from an air inlet port into the impeller at a circumferential position. SOLUTION: A distance L from a rotation axis of an impeller to a tip end of a bell mouth of a casing is varied so as to be gradually shortened in a rotation direction of the impeller from a throat portion 24 side L1 to an air discharge port 25 side L2 and is varied so as to be gradually lengthened from the air discharge port 25 side L2 to the throat portion 24 side L1. Thereby, a flow speed of an inflow air flow is made uniform and a blowing performance is enhanced to reduce a blowing noise.
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公开(公告)号：JP2000146214A
公开(公告)日：2000-05-26
申请号：JP31176098
申请日：1998-11-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUZUKI SOUZOU , KIDA TAKUMI , TATSUI HIROSHI
IPC: F24F1/00
Abstract: PROBLEM TO BE SOLVED: To suppress increase in the turbulence of air flow when an air conditioner is operated under high static pressure conditions by extending the suction side front edge of a vane in the impeller of a centrifugal fan farther than the front edge position of the vane at other part and forming a substantially triangular protrusion projecting to the inner diameter side of the impeller. SOLUTION: The impeller 10 of a centrifugal fan comprises a plurality of vanes 11, a main plate 12 fixed with the vanes 11, and a side plate 13 having a suction opening secured to the end face of the vane 11 on the side opposite to the main plate. A substantially annular heat exchanger is disposed on the delivery side of the impeller 10 and secured in a easing along with the impeller 10. Diameter Ds of air inlet in the side plate 11 is set larger than the vane inlet diameter D1 and the suction side front edge of the vane 11 is projected farther than the front edge position of the vane at other part to the inner diameter side of the impeller to form a substantially triangular protrusion 11a. Forward end 11b of the protrusion 11a is set between the air inlet 13a in the side plate 13 and D-D cross-section parallel with the main plate 12 including the joint of the rear edge of the vane 11 and the side plate 13.
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公开(公告)号：JP2003194441A
公开(公告)日：2003-07-09
申请号：JP2001400159
申请日：2001-12-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： TATSUI HIROSHI , ADACHI TADASHI , ONISHI ICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide an automatic ice making device fitted with a plurality of ice making vessels and means to supply water to the vessels individually and provide a refrigerator equipped with such an ice making device. SOLUTION: A water supply pump 19 is furnished with a first discharge pipe 20a and a second discharge pipe 20b connected with a first water supply pipe 18a and a second water supply pipe 18b provided individually to supply water to the ice making vessels 11 and 12 from a water supply tank 16, and when the ice making process in the vessels 11 and 12 is completed, ice is separated by rotating the vessels 11 and 12 and twisting, and then they are restituted to the horizontal position, and the pump 19 is operated so that the water is supplied to the vessels 11 and 12 from the respective water supply pipes 18a and 18b. COPYRIGHT: (C)2003,JPO
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