Abstract: A hermetic compressor includes a sealed casing which accommodates therein a compressing unit for compressing a refrigerant and a driving unit for driving the compressing unit. A communication passage is provided for establishing communication between the compressing unit and a discharge muffler. The discharge muffler is formed therein with a substantially annular hermetic passage for the compressed refrigerant introduced via the communication passage. In the substantially annular hermetic passage, the introduced compressed refrigerant is bifurcated in opposite directions. The substantially annular hermetic passage has an outlet in the discharge muffler. At the outlet, the bifurcated refrigerant joins and flows out of the substantially annular hermetic passage so as to reduce pressure pulsation of the compressed refrigerant by canceling pressure pulsation components contained in the bifurcated refrigerant.

Abstract: A deodorant equipment for an air conditioner includes a heater. A fin covers at least a part of an effective heating area of a surface of the heater. The fin has a radiator portion extending along a longitudinal direction of the heater. A vitreous coating film covers at least a part of an outer surface of the fin. A catalyst layer includes an absorption member and a catalyst. The absorption member absorbs odor components of air. The absorption member releases the odor components when being heated. The catalyst oxidizes and decomposes odor components when being heated.

Abstract: A compressor equipped with a compressing unit comprising a compressing section and a motor section which are connected to each other and Which are encased in a closed vessel, the compressing section including a crank shaft rotatable so that a piston reciprocates within a cylinder and the motor section comprising a rotor and stator and disposed at a lower side of the compressing section, the rotor being connected to the crank shaft so that the crank shaft is rotatable in response to driving of the motor section. Springs are provided between the compressing unit and the closed vessel so as to elastically support the compressing section and the motor section, and first and second balance weights are respectively provided on upper and lower portions of a rotor of the motor section.

Abstract: A layer-built heat exchanger has channels formed by dividers in a first-side plate 32 and a second-side plate 33. A seal plate 3 is interposed between the first- and second-side plates. The first-side plate 32 and second-side plate 33 are positioned relative to each other such that dividers 35 of the second-side plate 33 are in line with channels 36 of the first-side plate 32, and dividers 34 of the first-side plate 32 are in line with the channels 37 of the second-side plate 33, thus preventing deformation of the seal plate 3 due to a high differential pressure between the coolants flowing through the channels of the first- and second-side plates. The corners of the first-side plate 32, second-side plate 33, and seal plate 3 are also shaped differently so that omission of one of the component plates can be easily confirmed.

Abstract: A hermetic terminal cover is arranged to be mounted onto a hermetic terminal of, such as, a closed-type compressor. The hermetic terminal cover has terminal caps for covering respective terminal strips of the hermetic terminal. Each terminal strip includes a terminal pin fixedly passing through a metallic base with an insulator interposed therebetween. The terminal caps are mutually connected by flexible ribs each having a curved shape, and preferably an arc shape. Accordingly, each terminal cap has a high degree of positional or displacement freedom to facilitate mounting of the terminal cap onto the corresponding terminal strip. Further, each terminal cap has an increased thickness at a portion corresponding to an exposed surface of the insulator holding the terminal pin. Accordingly, adverse affection of metallic powders, such as, generation of short circuits and sparks between the terminal pins and the metallic base is effectively prevented.

Abstract: A hermetic compressor includes a sealed casing which accommodates therein a compressing unit for compressing a refrigerant and a driving unit for driving the compressing unit. An induction pipe is provided in the sealed casing for introducing the refrigerant into the compressing unit. The induction pipe has an outlet end communicating with the interior of the compressing unit and an inlet end which is opened to space in the sealed casing at a position corresponding to a node of a standing wave of the refrigerant in the sealed casing.

Abstract: A method of producing an open cell rigid polyurethane foam which comprises reacting a polyol with a polymethylene polyphenyl polyisocyanate prepolymer with a monool exemplified by diethylene glycol monomethyl ether by use of a substitute such as 1,1-dichloro-1-fluoroethane or methylene chloride as a volatile blowing agent, or a mixture of the volatile blowing agent with water, for trichlorofluoromethane as a blowing agent in the presence of a catalyst, a foam stabilizer and a cell opening agent. The resultant open cell rigid polyurethane foam has a cell size of about 200-250 microns, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1-0.01 mmHg readily attainable to provide a vacuum heat insulating material of a high heat insulating performance.

Abstract: The same number of grooves 20 through 27 are provided in end surfaces 19a and 19b of a roller 19. The grooves 20 through 27 have communicating portions 20a through 27a which communicate with an inner peripheral side of the roller 19 and sealed portions 20b, 20c, 20d, 20e, 20f through 27b, 27c, 27d, 27e and 27f each of whose cross-sectional area decreases. Accordingly, the cross-sectional area is decreased in direction in which a lubricating oil flows, and a plurality of oil pressures can thus be obtained. This results in a fixed clearance of roller 19.

Abstract: A hermetic compressor system includes a compressor and an electric drive resiliently supported in a closed housing. A metallic cylinder head is secured to the compressor and defines an insertion hole. The cylinder head has a suction chamber, which communicates with the insertion hole, and a discharge chamber integrally formed with and adjacent to the suction chamber. A suction muffler made of a synthetic resin or equivalent material of low thermal conductivity has a communicating duct extending through the insertion hole and partially disposed within the suction chamber. An opening is formed in the end of the communicating duct disposed within the suction chamber in a position facing a suction port leading a refrigerant gas into the compressor.

Abstract: A deodorizing device is provided in a refrigerator. This device includes a tubular heater and a water droplet prevention member provided above the heater. The deodorizing heater is provided in an air circulation path and below a cooling coil. On the outer periphery of the heating portion of the heater, there is provided a catalyst coat layer for absorbing odor components. The water droplet prevention member is disposed immediately above the tubular heater so as to cover the heater to prevent water droplets falling from the cooling coil, defrosted by the heater, from falling thereon. When the heater is heated, the catalyst coat layer is heated directly by the heater, and the odor components having been absorbed therein are efficiently decomposed. The heat from the heater heats the cooling coil by convection for effecting defrosting thereof.

Abstract: A hermetic compressor comprising a compressing mechanism and a housing for encasing the compressing mechanism, the housing comprising upper and lower portions which are coupled to each other and being formed to have curved surfaces. The housing is constructed such that one curved line on the housing is arranged to be different from other curved lines existing at positions symmetrical with a position of the one curved line with respect to planes X, Y and Z perpendicular to one another and passing the housing, the plane X including a boundary portion between the upper and lower portions of the housing and being perpendicular to a center line passing through a center of an upper surface of the upper portion and a center of a bottom surface of the lower portion, and the planes Y and Z being perpendicular to each other and perpendicular to the plane X and including the center line.

Abstract: A refrigerant shunt comprising an approximately cylindrical shunt portion which is provided at its one end with an inlet portion for forming a throttle, and at its other end with a collision wall for changing the flowing direction from the inlet portion, a plurality of output pipes which are radially spliced with the above described shunt portion peripheral wall, so that the vapor phase and the liquid phase of the refrigerant flowing into the inlet portion are uniformly mixed and also, are equally branched in flowing.

Abstract: A refrigerant circulation pump for circulating a liquid refrigerant through an air-conditioner has a small lubrication hole extending through a bearing by means of which a shaft for driving a compressor unit of the pump is rotatably supported. The lubrication hole communicates at one of its opposite ends with a compression chamber of the compressor unit, the other of the opposite ends communicating with a friction point between the shaft and the bearing. While the pump is operating, a part of the liquid refrigerant is fed under pressure from the compression chamber to the friction point between the shaft and the bearing, thereby lubricating the friction point. With this lubrication, the pump is able to operate reliably for a prolonged period of time without causing wear of the shaft and the bearing.

Abstract: A hermetically sealed compressor for use in household appliances such as refrigerators comprising an electric element and a compression element being resiliently supported within a hermetic container. The crankshaft is secured to a rotor of an electric element and supported by a pair of ball bearings. The crankshaft is comprised of a concentric principal part, a concentric secondary part and an eccentric axial part positioned between the principal part and the secondary part. The eccentric axial part is connected to one end of a connecting rod. In one embodiment, the eccentric axial part overlays all of the principal part and secondary part when seen in plan or projection view from the axial direction of the crankshaft. One of a pair of ball bearings is installed in each of the concentric principal part and secondary part respectively so as to support the load caused by the reaction of the compression load equally on each side of the axis along which the force of that load is exerted.

Abstract: The present invention relates to a shelf appartus for a refrigerator which raises and lowers a refrigerator's food storage shelves in an analog manner, making it possible to determine the positions of the shelves largely in accordance with the size of food items stored inside the refrigerator. More particularly, racks are provided on the left and right sides of the refrigerator's interior, gears which engage these racks are provided on the shelves of the refrigerator, and the food storage shelves are raised and lowered by rotating these gears.

Abstract: Disclosed are plate-shaped fins for a heat exchanger having a coated film formed thereon so that waterdrops can easily fall down from the surface of the plate-shaped fins, the coated film being composed of a solution containing a silicone coating film type resin compound and inorganic finely divided particles. Further, the inorganic finely divided particles are used to provide fine irregular portions on the surface of the coated film formed on the plate-shaped fins so that the area where the waterdrops come into contact with the surface of the fins is reduced.

Abstract: A fin-tube type heat exchanger includes a large number of plate fins arranged in parallel to each other at predetermined intervals for allowing an air stream to flow between them, and heat exchanging tubes having an outer diameter Do and extending through the plate fins in a direction at right angles thereto. The heat exchanging tubes are set in rows spaced apart by a pitch L.sub.1 in a direction parallel to an air stream as represented by1.2 Do .ltoreq.L.sub.1 .ltoreq.1.8 Do,and are spaced in each of the rows by a pitch L.sub.2 in a direction perpendicular to the air stream as represented by2.6 Do .ltoreq.L.sub.2 .ltoreq.3.3 Do.Each of the plate fins is formed, between the heat exchanging tubes, with a plurality of cut and raised portions open to the air stream and protruding alternately is opposite directions from a base plate of the plate fin.

Abstract: A fin tube heat exchanger is used in an air conditioner or the like and comprised of a plurality of fin plates spaced at regular intervals in parallel with one another, a plurality of heat exchanger tubes arranged in at least one row and extending through the fin plates in a direction perpendicular to the direction in which the fin plates extend, a plurality of raised strips formed on each fin plate in a direction perpendicular to an air flow and raised out of their original plane, and at least one draining passage formed on each fin plate and extending along the center line of the row of the heat exchanger tubes. In this heat exchanger, air is allowed to flow between the fin plates whereas a fluid medium is allowed to pass in the heat exchanger tubes. Each raised strip has two leg portions inclined with respect to the direction of the air flow.

Abstract: A hermetic compressor according to the present invention has an improved operating efficiency for use in a cold storage chamber, freezing chamber or the like . The compression includes a suction pipe which is formed by a material having heat conductivity lower than that of a casing of the hermetic compressor so that heat of the closed casing is not easily transmitted to the suction pipe. In this manner heating of the drawn in cooling medium gas is inhibited, and thus, cooling efficiency can be improved by preventing discharge of a low density cooling medium into the cooling system through compression of the expanded cooling medium gas.

Abstract: A storage receptacle provided with a receptacle body opened on its upper side, a covering member for covering the opening portion of the receptacle body and a permeable film member having a permeability to gases and a moisture permeability from 1500 to 3500 g/m.sup.2 .multidot.24 hr and formed at least on a portion of the receptacle body or covering member.