公开(公告)号：JPH11101571A

公开(公告)日：1999-04-13

申请号：JP26320297

申请日：1997-09-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAICHI KENJI

IPC: F25D23/00 ,  F25D23/06

Abstract: PROBLEM TO BE SOLVED: To improve a transporting efficiency of a large-sized refrigerator or the like in the case of transporting the refrigerator to a facility for recovering chlorofluorocarbon(CFC) necessary at the time of recycling the refrigerator. SOLUTION: Reference numeral 29 is the refrigerator and reference numeral 30 a cut cutout part obtained by continuously cutting out an elliptical shape at an outer periphery of an outer case of iron plate property of a refrigerator cabinet and adhering an easily cuttable material such as a plastic film, laminating foil or the like from a rear side of the outer case. The refrigerator is cut into 50% or more along the cutout part 30 to be a plate-like state, and superposed. Thus, as compared with the case of loading conventional refrigerator, number of the refrigerators of about four times as many as the conventional refrigerator can be conveyed by the superposition.

公开(公告)号：JPH10121087A

公开(公告)日：1998-05-12

申请号：JP29062797

申请日：1997-10-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAICHI KENJI ,  NAKAMA HIROTO ,  SAKAI TOSHIKAZU

IPC: F04B39/02 ,  C10M105/32 ,  C10M171/00 ,  C10N40/30 ,  F04B49/10 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To provide a hermetic compressor fabricated by placing a compressor part and a drive motor in a hermetic casing and using a refrigerant (e.g. HFC-134a) and made proof against a current leakage due to poor electrical insulation of a refrigerator oil by sealing it with an ester-type refrigerator oil having a volume resistivity of 10 Ωcm or above. SOLUTION: In the hermetic container, the ester-type refrigerator oil having a volume resistivity of 10 Ωcm or above and the HFC-134a layer 12 are in the state of two separated layers. When the compressor is operated, the generated heat causes the layers to gradually dissolve to break the two-separated state. The volume resistivity of the refrigerant HFC-134a is 10 Ωcm and is lower than that of the refrigerator oil. An insulation resistance sensor 16 controls current application by means of a controller 15 for heater current application and controls the temperature when the insulation resistance lowers to a specified value or below by virtue of the fact that the insulation resistance of the refrigerator oil varies with the amount of the refrigerant dissolved in it. By virtue of the high insulation resistance of the ester oil itself, a current leakage or an electrical shock can be effectively prevented.

公开(公告)号：JPH0926216A

公开(公告)日：1997-01-28

申请号：JP17182195

申请日：1995-07-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAICHI KENJI ,  HIROTA MASANORI

IPC: F25B1/00

Abstract: PROBLEM TO BE SOLVED: To reduce the possibility of the refrigerant catching fire, relating to a cooling apparatus using a combustible hydrocarbon refrigerant, in case of leakage of the hydrocarbon refrigerant caused by breakage of a part of the apparatus. SOLUTION: A cooling apparatus comprises a refrigeration cycle in which a compressor 9, condenser 10, capillary tube 11, evaporator 8, and suction pipe 12 are connected in a loop in sequence and in which a hydrocarbon refrigerant in use is mixed with a low boiling-point incombustible substance, such as carbon dioxide.

公开(公告)号：JPH08285437A

公开(公告)日：1996-11-01

申请号：JP8813495

申请日：1995-04-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： HIROTA MASANORI ,  TAKAICHI KENJI

IPC: F25D19/00 ,  F25B1/00 ,  F25B31/00 ,  F25B39/04

Abstract: PURPOSE: To reduce dangerousness that an HC refrigerant catches fire, by setting a compressor in a machine chamber provided at an upper part on a rear face of a heat insulation casing and setting a duct for diffusion/heat. radiation above the compressor, a duct for diffusion in the machine chamber and a fan at the bottom of the machine chamber. CONSTITUTION: Air in a machine chamber 7 provided at an upper part on a rear face of a heat insulation casing 2 is forcibly discharged at all times from the upper part of the machine chamber 7 by an air force of a fan 19 through a duct 18 for diffusion/heat radiation and a duct 21 for diffusion. In this case, even in the case where a combustible HC refrigerant 14 leaks into the machine chamber 7 through a hole bored in a welded part due to welding failure or corrosion at a welded part between a compressor 9 and a discharge pipe 10, or between the compressor 9 and a suction pipe 13, the HC refrigerant 14 is forcibly discharged and diffused by the fan 19 together with air in the machine chamber 7 through the duct 18 for diffusion/heat radiation and the duct 21 for diffusion. Accordingly, the HC refrigerant 14 is diffused in ambient air without being stayed at the lower part of the heat insulating casing 2, and the possibility of catching fire due to an electric contact is minimized.

公开(公告)号：JPH07133761A

公开(公告)日：1995-05-23

申请号：JP28240993

申请日：1993-11-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： ISHIDA TAKANORI ,  TAKAICHI KENJI ,  SAKAI TOSHIKAZU ,  TADA KOJI

IPC: F04B39/00

Abstract: PURPOSE:To enhance durability of a compressor using a specific refrigerant by forming a bearing for supporting a shaft made of cast iron of aluminum alloy cast, and casting a preform of ceramic fiber having a specific porosity in the inner circumferential surface. CONSTITUTION:A shaft 4 made of cast iron press-fitted into a rotor 2 is supported by a bearing 11 by a motor comprising the rotor 2 and a stator 3 so that a compressor is rotated. A piston 8 is reciprocated via a piston pin 9 by a connecting rod 6 attached to an eccentric portion of the shaft 4. As a result, refrigerant gas composed of 1,1,1,2-tetrafluoroethane is sucked into a space 10 defined inside a cylinder 7, followed by compression. The bearing 11 supporting the shaft 4 is formed of aluminum alloy cast, and a preform of ceramic fiber having a porosity of 70-90% is cast in the inner circumferential surface. Consequently, it is possible to enhance heat radiation performance and mechanical strength.

公开(公告)号：JPH0491388A

公开(公告)日：1992-03-24

申请号：JP20611790

申请日：1990-08-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAICHI KENJI

IPC: F04B39/16 ,  F04C18/356 ,  F04C29/02 ,  F04C29/04 ,  F04C29/12

Abstract: PURPOSE:To prevent improper cooling by blinding due to a polymerized object of harmful substances by filling a filter part, which is formed in a cooling pipe of using a refrigerant consisting of a carbon compound halide replaced with at least one or more hydrogen, with oil absorptive resin, in the case of a closed compressor. CONSTITUTION:In a closed compressor, a piston 5 is moved by turning force of a motor part 12 to compress and deliver a refrigerant in a compression chamber 7. Here, a cooling pipe 15, which connects one port to an oil supplier 8 and opens the other port to a position lower than an oil level of the compressor 1, is provided, and a filter part 16 of double-pipe structure is interposed in this cooling pipe 15. The inside of this filter part 16 is filled with oil absorptive resin 17 consisting of chlorination polyolefin and butyl elastomer having a mesh structure of bridge. In this way, in the case of using 1,1,1,2- tetrafluoroethane(hereinafter called HFC-134a), which is a carbon compound halide containing two of hydrogen, as a refrigerant, a lipophilic substance of assembly oil, cutting oil, etc., can be surely removed from mixed liquid of the refrigerant in refrigerator oil by the oil absorptive resin 17.

公开(公告)号：JPH02192530A

公开(公告)日：1990-07-30

申请号：JP1234389

申请日：1989-01-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： FUJIMOTO RYUZO ,  TAKAICHI KENJI

IPC: F24F6/04

Abstract: PURPOSE:To enable the main body of a humidifier to be fixed along a surface of a heat exchanger having a certain curvature by a method wherein a hollow porous member and spacer members are wound around a square column member or a flat plate of flexible material to constitute the main body of the humidifier and then an outer frame storing them main body of the humidifier is divided. CONSTITUTION:A hollow porous member 1 having sheets having sheets of hydrophilic polymer overlapped to each other and end portions adhered to or heat melted thereto is provided with, at its end portion, a water supplying pipe 3 communicating with the hollow part. This hollow porous member 1 and the corrugated film-like spacer members 4 are overlapped to each other, wound around a winding axis 5a of a square column or a flat plate made of resilient material such as rubber or plastic elastomer or the like from an opposite end of the water supplying pipe 3 so as to form the main body 6 of the humidifer. An outer frame 10 storing this humidifer is divided into several segments and properly spaced apart. Accordingly, since the main body of the humidifier is not fixed in a flat-plate shape by the outer frame and the winding shaft, resulting in that the humidifier can be bent along a shape of the fixing surface 11a of the heat exchanger 11 within the air conditioner having a certain curvature.

公开(公告)号：JPH024170A

公开(公告)日：1990-01-09

申请号：JP15077388

申请日：1988-06-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： IWAMOTO TETSUMASA ,  TAKAICHI KENJI

IPC: F25B5/02

Abstract: PURPOSE:To supply a low cost, and simple refrigerating cycle by using an air separator on the outlet side of a condenser of a refrigerating cycle and controlling refrigerant with a single solenoid valve. CONSTITUTION:During ordinary operation, a first solenoid valve 5 is opened. The refrigerant discharged from a compressor 1 is introduced to a pressure reducing device 10 by way of a condenser 2, and separated into liquid phase and air phase. The separated refrigerant is introduced to an air separator 9 by way of a refrigerant pipe 12. The refrigerant is separated into a vapor drain side 11 and a liquid drain side 13 in the air separator 9. There are two circuits available, One is the circuit where the cooling medium flows from the vapor drain side 11 to a pressure reducing device 7 while the other is the circuit where it flows from the liquid drain side 13 to the first solenoid valve 5. Almost every refrigerant flows to the first solenoid valve 5 where there is available the liquid refrigerant having larger specific volume. During low temperature operation, the first solenoid valve is closed. The refrigerant introduced to the air separator 9 is adapted to flow only to a refrigerant pipe 11' installed to the vapor drain side 11.

公开(公告)号：JPH01121673A

公开(公告)日：1989-05-15

申请号：JP27765587

申请日：1987-11-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAICHI KENJI

IPC: F25D17/08 ,  F25D23/00

Abstract: PURPOSE: To ensure a sufficient deodorization effect by securing first and second honeycomb catalysts arranged sequentially on the lee such that thin holes thereof are not matched with each other by means of a guide plate thereby preventing blow-through phenomenon of the mixture of odor and ozone. CONSTITUTION: First and second honeycomb catalysts 14, 15 are arranged sequentially on the lee of an ozone generator 8 disposed in a ventilation path 7a formed integrally with the inner wall face of a freezing chamber 2 and a refrigerating chamber 3. The first and second honeycomb catalysts 14, 15 are secured by means of a guide plate 16 having a step of one half of the dimension of thin holes in the catalyst such that the thin holes are not matched with each other. Since chill and ozone passed through the central part of the thin hole in the first catalyst passes through the vicinity of the wall face of the second catalyst, blow-through phenomenon is prevented and a sufficient deodorization effect is ensured.

公开(公告)号：JPS6458978A

公开(公告)日：1989-03-06

申请号：JP21571787

申请日：1987-08-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： NAGATA KOJI ,  TAKAICHI KENJI

IPC: F25D23/00

Abstract: PURPOSE: To achieve a higher ozone generation efficiency and a, miniaturization of an ozone generator and a high voltage generator by making cooling air with a relatively low temperature and a low humidity, namely, a low absolute humidity in a storage flow into the ozone generator as material gas to generate ozone. CONSTITUTION: An ozone generator 40 is of a creeping discharge type. When a high frequency high voltage is applied to both electrodes 46 and 48 by a high voltage generator 42, a more powerful high frequency creeping streamer discharge occurs from the discharge electrode 48 to generate ozone on the circumference thereof. The ozone thus generated is sent to a honeycomb-shaped ozonalysis catalyst 41 by a blower 14 to accomplish deodorization in reaction with odor components in the course or on the catalyst 41. The temperature and the humidity (about -25 deg.C to -10 deg.C, 30-40% RH) windward of the ozone generator 40 is set lower than the temperature and humidity (about 3-8 deg.C, 40-60% RH during the housing of foods) of a storage chamber 9' from which the deodorized air is discharged.