公开(公告)号：JP2001091139A

公开(公告)日：2001-04-06

申请号：JP26863099

申请日：1999-09-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIMIZU TAKESHI ,  TANAKA MASAAKI ,  NISHIMURA KOICHI ,  YONEMURA MINORU

IPC: F25D11/02 ,  F25B1/00 ,  F25B47/02 ,  F25D21/08

Abstract: PROBLEM TO BE SOLVED: To reduce the danger caused by ignition when defrosting is performed under such environment that a combustible refrigerant has leaked, in a refrigerator using a combustible refrigerant. SOLUTION: This refrigerator is equipped with a compressor 9, a refrigeration cycle of evaporator 10 using a combustible refrigerant, a defrosting means 18 for defrosting the evaporator 10, and an inverter means 22 for varying the capacity of the said compressor 19, and this operates the defrosting means 18 by the inverter means 22, so this refrigerator can reduce the danger caused by the ignition of the combustible refrigerant because the temperature of the defrosting means 18 is under the ignition temperature of the combustible refrigerant.

公开(公告)号：JP2000121237A

公开(公告)日：2000-04-28

申请号：JP29826598

申请日：1998-10-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： TANAKA MASAAKI ,  SHIMIZU TAKESHI ,  NISHIMURA KOICHI ,  KAMISAKO TOYOSHI

IPC: F25D21/08 ,  F25B47/02

Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator using an ignitable refrigerating in which explosion is prohibited when a defrosting operation is carried out under an environment where ignitable refrigerant is leaked out of the refrigerator. SOLUTION: There is provided a cooling chamber 19 having an evaporator 10 of a freezing cycle where an ignitable refrigerant is applied and having a defrosting means 18 for defrosting the evaporator 10. Since the defrosting means 18 is mounted near the lower-most pipe 20 of the evaporator 10, defrosting operation caused by a thermo-siphon of the ignitable refrigerant can be promoted, disaster of explosion caused by ignition of the ignitable refrigerant can be prevented and then the non-refrigerated state caused by residual frost can be prevented.

公开(公告)号：JP2000121232A

公开(公告)日：2000-04-28

申请号：JP29826298

申请日：1998-10-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAMISAKO TOYOSHI ,  SHIMIZU TAKESHI ,  TANAKA MASAAKI ,  NISHIMURA KOICHI

IPC: F25D11/02 ,  F25B47/02 ,  F25D21/06

Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator having a defrosting system in which a safety characteristic at the time of using ignitable refrigerant can be improved and a storing space of the refrigerator can be expanded. SOLUTION: This refrigerator is comprised of a cooling circuit 36 including a compressor 29, a condenser 31, a first flow passage control means 34 for use in feeding refrigerant to either one of a first pressure reducing means 32 or second pressure reducing means 33, a first evaporator 25 for evaporating and gasifying liquefied refrigerant fed from the pressure reducing means, a second evaporator 27 and a second flow passage control means 35 installed after the second evaporator 27; and a defrosting circuit 38 constructed by a third flow passage control means 37 for use in flowing high temperature gas to the second evaporator 27 during a defrosting operation.

公开(公告)号：JPH11304340A

公开(公告)日：1999-11-05

申请号：JP11467698

申请日：1998-04-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： NISHIMURA KOICHI ,  SHIMIZU TAKESHI ,  TANAKA MASAAKI

IPC: F25D19/00

Abstract: PROBLEM TO BE SOLVED: To raise the heat radiation efficiency of a condenser, by equipping it with a cooling duct where either space above or below a condenser is widened on the suction side of the condenser and the opposite space from the suction side is widened on the discharge side of the condenser and besides where both spaces above and below it are wide in the middle. SOLUTION: This refrigerator is composed of a condenser 5, a cooling fan 3 for cooling the condenser 5, and a cooling duct 7 where either space above or below the condenser 5 is widened on the suction side of the condenser 5 and the opposite space from the suction side is widened on the discharge side of the condenser 5 and besides where both spaces above and below it are wide in the middle. Then, in the section where the space between such condenser 5 and the cooling duct 7 is wide, a cooling wind, which was flowing in the condenser 5 up to now, is let flow to a new space, and a cooling wind, which was flowing in the space up to now, is let flow to the condenser 5. Hereby, the temperature difference between the condenser 5 and the cooling wind can be enlarged, and the heat radiation efficiency of the condenser 5 can be raised.

公开(公告)号：JPH10292976A

公开(公告)日：1998-11-04

申请号：JP10139597

申请日：1997-04-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： NISHIMURA KOICHI ,  SHIMIZU TAKESHI ,  TANAKA MASAAKI

IPC: F25D19/00 ,  F25D21/14

Abstract: PROBLEM TO BE SOLVED: To prevent lowering of the efficiency of a refrigerator and to remove dust adhered to a condenser completely by passing cooling air in the direction on the side of condenser efficiently by providing with fins protruding in the direction of the condenser inside an evaporation pan and crossing the direction of the cooling air-flow from a cooling fan. SOLUTION: Fins 9 are arranged protruding in the direction of the condenser inside the evaporation pan. The outer air is taken inside a machine room driven by the cooling fan from an intake hole, cools the condenser and a compressor, and is discharged from exhaust hole. When the cooling air passes through the evaporator, the cooling, air tends to pass through the inside of the evaporation pan 6 with less pressure loss. The cooling air collides fins 9 erected inside the evaporation pan 6 towards the condenser, is pushed back towards the condenser and cools the condenser. Therefore, the cooling air passes through the condenser becomes more than that in the case without the fins 9 and the condenser can be cooled efficiently. Therefore, the cooling air is prevented from passing on the side of the evaporating pan 6.

公开(公告)号：JPH09236359A

公开(公告)日：1997-09-09

申请号：JP4258396

申请日：1996-02-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： TANAKA MASAAKI ,  KINO AKIHIRO ,  SHIMIZU TAKESHI

IPC: F25B1/00 ,  F25B43/02

Abstract: PROBLEM TO BE SOLVED: To improve the durability and reliability of a compressor in a refrigeration system in which refrigerator oil and refrigerant are separated into two phases by restraining the variations of capacity and preventing liquid refrigerant from flowing into the compressor. SOLUTION: A header 5' of a refrigerating system is composed of a vessel 5a' having at its top an opening communicating with the outlet side of an evaporator and a suction pipe 6' whose one end is inserted from below into the vessel 5a' and whose other end communicates with the suction side of a compressor, and a small hole 9 is provided in the lower side of a portion of the pipe 6' inserted into the vessel 5a', which hole 9 allows liquid refrigerant remaining in the vessel 5a' of the header 5' to return to the compressor, whereby the variations of the capacity of the compressor can be restrained and the liquid refrigerant can be prevented from flowing into the compressor so that the durability and reliability of the compressor can be improved.

公开(公告)号：JPH08285409A

公开(公告)日：1996-11-01

申请号：JP8812895

申请日：1995-04-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： SASABE SHIGERU ,  SAKAI TOSHIKAZU ,  KITA ICHIRO ,  KATAOKA JINKO ,  KINO AKIHIRO ,  SHIMIZU TAKESHI ,  TANAKA MASAAKI ,  YONEMURA MINORU

IPC: F25B43/00 ,  F25B43/02

Abstract: PURPOSE: To increase an oil returning amount within an accumulator and to enable a poor lubricating action at a sliding part of a compressor to be reduced. CONSTITUTION: This accumulator is comprised of a container 5 storing refrigerant; a partition plate 6 for dividing the container 5 into two chambers, i.e., A chamber 7 and B chamber 8; an inlet pipe connected to an upper part of the A chamber 7 of the container 5; a first outlet pipe 9 connected to a lower part of the A chamber 7 of the container 5; a second outlet pipe 10 inserted into the lower part of the B chamber 8 of the container 5 and having its one end connected to a side part of the first outlet pipe 9; and a separated pipe 11 having one outer diameter smaller than an inner diameter of the inlet pipe, having one end inserted into the inlet pipe and the other end being connected to the partition plate 6 at a position higher than that of an end surface of the second outlet pipe 10.

公开(公告)号：JPH08271117A

公开(公告)日：1996-10-18

申请号：JP7748795

申请日：1995-04-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIMIZU TAKESHI ,  TANAKA MASAAKI ,  HYODO AKIRA

IPC: F25D16/00 ,  F25D21/08

Abstract: PURPOSE: To provide a refrigerator in which an electrical power at night is accumulated for heat and a demand for electrical power is made uniform by shifting it to a daytime amount. CONSTITUTION: The refrigerator is comprised of a time control means 46 for performing a freezing cycle in which a cooling device 8 and a heat accumulating device 31 having heat accumulating material 32 therein are connected in parellel or in series, a time control over a heat accumulating operation for accumulating heat to a heat accumulating device 31 at an optional time period and a heat accumulating and cooling operation for use in cooling the inner side of the heat accumulating device 31, a heat accumulating device fan 39 for feeding out cold air in the heat accumulating device 31, a cooling device 8, a room temperature-sensing means 40 for sensing room temperature, and a heater 58 for defrosting the cooling device 8.

公开(公告)号：JPH08271098A

公开(公告)日：1996-10-18

申请号：JP7748895

申请日：1995-04-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU ,  SASABE SHIGERU ,  KITA ICHIRO ,  KINO AKIHIRO ,  SHIMIZU TAKESHI ,  TANAKA MASAAKI ,  YONEMURA MINORU

IPC: F25B45/00

Abstract: PURPOSE: To prevent an abnormal drop in suction pressure by a method wherein a header consists of a vessel to store liquid refrigerant, a refrigerant inlet pipe connected to the upper part of the vessel and a refrigerant outlet pipe inserted from below and a part of the outlet pipe is made up of a permeable membrane whose pours have diameters within a specified range. CONSTITUTION: A header 5 has such a construction that a refrigerant inlet pipe 10 is connected to the upper part of a vessel 11 and a refrigerant outlet pipe 9 is inserted into the vessel 11 from below. A hole is provided in a part of the refrigerant outlet pipe 9 and covered with a polytetrafluoroethylene-made permeable membrane 13 which has pours with diameters of 0.01-3μm and is supported by a porous resin 12. An evaporator is connected to the upper part of the inlet pipe 10 and a compressor is connected to the lower part of the outlet pipe 9 via a suction pipe 6. Thereby, an abnormal drop in suction pressure can be prevented and the specified refrigerating performance can be maintained.

公开(公告)号：JPH08247673A

公开(公告)日：1996-09-27

申请号：JP5433295

申请日：1995-03-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： TANAKA MASAAKI ,  SHIMIZU TAKESHI ,  HYODO AKIRA

IPC: F28D20/00

Abstract: PURPOSE: To improve the efficiency of fusion of a heat accumulator on the discharge side of fluid effecting heat-exchange. CONSTITUTION: A heat-exchanger 15 comprises one surface being a heat- exchange surface 20 for freezing being a plane and a back surface being a heat-exchange surface 21 having an uneven surface along which fluid flows, and has damper parts 23 formed in such a state that a part of the heat accumulator 15 on the suction side 22 of fluid is extended and the damper part is fluctuated through freezing and fusion. The damper part 23 is formed in such a manner that the thickness of the container of the heat-exchanger 15 is less than that of heat-exchange surface 20 for freesing and that of the heat-exchange surface 21 for fusion. Heat accumulation units 16 each having a cooling device 17 making abutment against the protrusion of the heat-exchange surface 21 for fusion of the heat accumulator 15 and making plane contact with the heat- exchange surface 10 for freezing are laminated.