摘要:
An air conditioning system includes a first indoor unit having a heat exchanger separating the inside space of a case in which air drawn from an air inlet is passed through the heat exchanger and then discharged from a plurality of air outlets, and a second indoor unit having no heat exchanger and connected with one of the air outlets via an intake duct. With this construction, the air to be distributed to a plurality of rooms is cooled or heated by a common heat exchanger. The air conditioning system thus constructed can be installed easily and has a relatively small number of structural components.
摘要:
A diffuser unit for air conditioning systems includes an air supply duct having an air inlet and two air outlets, two dampers for adjusting the open area of the respective air outlets, and a linkage mechanism interconnecting the dampers and a drive unit. The dampers include arcuate end portions for contacting an inner wall of the duct and for preventing the generation of wind noise from air being supplied through the duck. The linkage mechanism is so constructed as to displace a selected one of the dampers while holding the other damper in its closed position.
摘要:
A vane compressor has a vane back pressure adjustment device including back-pressure chambers defined in a vane-supporting rotor and surrounded by vanes and side blocks secured to axial ends of a cylinder. The back-pressure chamber has axial ends disposed to follow a path against each of the side blocks when the rotor rotates. The path is divided into at least one high-pressure zone in which the vanes move across a pump outlet defined in the cylinder, and at least one normal-pressure zone which is the remainder of the path. In the normal-pressure zone, oil grooves defined in surfaces of the side blocks which face the rotor and supplied with oil from an oil sump in the vane compressor are in communication with the back-pressure chambers, to thereby maintain the oil pressure in the back-pressure chambers at a pressure level in the oil sump. In the high-pressure zone, the back-pressure chambers are out of communication with the oil grooves so that the oil fed into the back-pressure chambers is confined therein, except through a restrictor means. When the vanes move across the pump outlet, the vanes enter the high-pressure zone to trap oil in the back-pressure chambers to thereby elevate the oil pressure in the back-pressure chambers to a high level. Therefore, the vanes are prevented from being retracted deeply into vane slits in the rotor and then popping out into hitting engagement with the cylinder.
摘要:
A swash plate compressor is disclosed which is provided with a compression capacity control apparatus capable of returning an output pressure of a high pressure chamber of one cover to a low pressure chamber of the same cover. The control apparatus comprises a delivery chamber which is communicated with a high pressure chamber of the other cover, isolated from the high pressure chamber of said one cover and connected to a delivery conduit. The control apparatus also comprises a compression capacity control passageway providing communication between the delivery chamber and the low pressure and high pressure chambers of said one cover. A valve member is disposed in the control passageway to interrupt the communication between the delivery chamber and the high pressure chamber of said one cover while establishing communication between the low pressure and high pressure chambers of said one cover.
摘要:
A swash-plate type compressor provided with a pair of thrust bearings arranged at opposite ends of the swash plate to support thrust loads caused by the swash plate. The thrust bearings each comprise a plurality of seats in the form of blind holes formed in end faces of central seating portions formed on the cylinder blocks and a plurality of bearing members each having its one end portion slidably fitted in a corresponding one of the seats. The seats or blind holes are formed in the end face of each central seating portion along the perimeter of the opening of a drive shaft-fitted axial hole formed in the central seating portion and in a circumferentially spaced arrangement. The bearing members each have its other end portion formed with a planar end face and have this planar end face disposed in slidable face-to-face contact with a corresponding end face of the boss of the swash plate.
摘要:
A double-acting piston is provided which is slidably mounted within a cylinder bore formed within the framework of a swash-plate type compressor, for carrying out a fluid compressing action. The piston comprises a pair of piston heads provided at its opposite ends and an intermediate coupling member coupling the piston heads to each other. The piston heads and the intermediate coupling member are separately fabricated from discrete pieces by means of stamping or the like. The piston heads each comprise a hollow first part extending axially inwardly of the piston and a hollow cylindrical second part extending radially outwardly from an outer end of the first part and serving as a slider. The first and second parts of the piston heads may be separately fabricated from discrete pieces by means of stamping or the like. The first parts of the piston heads have their opposed end faces formed integrally with either ball pockets for receiving balls which engage the swash plate via shoes or semispherical protuberances for engagement with shoes which are arranged in sliding contact with the opposite side surfaces of the swash plate.
摘要:
A rotor is operatively provided in a bore of a cylinder which is formed with an inlet and an outlet. The cylinder is enclosed by a housing with an annular chamber being defined between the cylinder and the housing. The housing has an inlet which is connected to the inlet of the cylinder. The outlet of the cylinder is provided at an upper portion thereof. An oil sump is defined by a lower portion of the annular chamber of the housing. A partition divides the interior of the housing into the annular chamber within which the cylinder is disposed and an outlet chamber which communicates with an outlet of the housing. The lower portion of the partition is cut away to communicate the annular chamber with the outlet chamber. An oil passageway leads from the oil sump through the rotor to the inlet of the housing in such a manner that oil flows through the oil passageway to lubricate the internal parts of the rotor and is entrained in operating fluid at the inlet of the housing, passing through the cylinder to lubricate areas of sliding contact between the rotor and the inner periphery of the cylinder. The operating fluid and oil expand and change direction in the annular chamber so that the operating fluid passes to the outlet chamber but the entrained oil is precipitated and returns to the oil sump.
摘要:
Rotary polygon mirror type light deflecting system having a labyrinth ring fixed to an end of a fixed shaft. An outer circumferential surface of a labyrinth ring is caused to confront an inner circumferential surface of a polygon mirror while interposing a small gap therebetween in a radial direction. Further, a lower portion of a circular hole of the polygon mirror is fitted with a cylindrical sleeve of a hub to fix the polygon mirror to the hub. The polygon mirror and the labyrinth ring are made of the same material, e.g., aluminum or an aluminum alloy. The small gap is made as small as possible.
摘要:
A magnetic disc drive motor contains a frame; a fixed shaft mounted on the frame and provided with two circumferential grooves; a bearing member including: a plurality of balls disposed in the circumferential grooves; upper and lower roller rings mounted on the fixed shaft through the halls disposed in the circumferential grooves; a pre-loading spring mounted between the upper and lower roller rings; a rotor fixed to one end of the lower roller ring and provided with a loading surface formed in its upper surface; and a motor member mounted below the rotor, wherein the upper and lower roller rings are exposed above the upper surface of the rotor, the roller rings are fitted in center holes of magnetic discs, and inner peripheral portions of the magnetic discs are loaded on a loading surface of the rotor.
摘要:
A magnetic disc drive motor is provided. It includes a frame, a fixed shaft mounted on the frame upper and lower ball bearings. Inner rings of the upper and lower ball bearings are mounted on the fixed shaft. A rotor is fixed to outer rings of the upper and the lower of the ball bearings. The rotor is provided with a loading surface on an inner portion of its upper surface. The motor also includes a motor member for rotating the rotor disposed between the rotor and the frame. An upper portion of the upper ball bearing projects upward from the loading surface of the rotor and is fitted in the center hole of a magnetic disc, and the inner edge portion of the magnetic disc is fixed to the loading surface of the rotor.