Abstract: An air conditioner comprising a casing having a receiving space therein and mounted in a ceiling, and an air supplying unit installed at a lower side of the casing for diffusing heat-exchanged air indoors, whereby the heat-exchanged air can evenly quickly be diffused indoors.

Abstract: An operation of a multi-type air conditioner, which includes a refrigerant distributor provided between one outdoor unit and a plurality of indoor units is controlled. A refrigerant supply controller determines indoor temperatures of a plurality of indoor units, decides to operate a compressor on the basis of the determined indoor temperatures, and transmits the determined operation of the compressor to an outdoor unit controller. The refrigerant supply controller determines the temperature of a refrigerant supplied to a plurality of operational indoor units and the temperature of a returned refrigerant, and adjusts the degree of opening/closing of a plurality of electronic expansion valves according to a difference between the determined temperatures of the supplied refrigerant and the returned refrigerant such that the amount of the refrigerant supplied to a plurality of indoor units are adjusted.

Abstract: A pole base assembly for a magnetic recording/reproducing apparatus for guiding a tape drawn from a reel through a predetermined path in parallel or substantially in parallel toward a lead surface of a head drum. The pole base assembly comprises a pole base disposed to approach and retreat from a side of the head drum when the tape is loaded and unloaded, respectively, a sloping pole disposed to be sloped on the pole base, to be parallel or substantially parallel to the lead surface of the head drum, for guiding the tape fed to the head drum at a predetermined angle, to be parallel to the lead surface, and a supporting holder disposed on the pole base, and having a sloping part to support the sloping pole to be inclined at a predetermined angle.

Abstract: A method for removing a partial overload in an air conditioner, which includes determining whether a plurality of indoor units provided in the air conditioner includes at least one indoor unit operating in an overload state; and performing a partial overload operation to increase the amount of a refrigerant introduced into a corresponding evaporator of the at least one indoor unit when the at least one indoor unit is operating in the overload state.

Abstract: A driving controlling apparatus for an air conditioner having a plurality of compressors, and a method thereof. The apparatus comprises a flow amount distribution resistor installed at an outlet of an expansion valve, for passing a certain amount of refrigerant; and a controlling unit for detecting a current load and outputting a control signal so as to introduce a certain amount of refrigerant into the flow amount distribution resistor based on a driving mode corresponding to the detected load.

Abstract: A driving controlling apparatus for an air conditioner having a plurality of compressors, and a method thereof. The apparatus comprises a flow amount distribution resistor installed at an outlet of an expansion valve, for passing a certain amount of refrigerant; and a controlling unit for detecting a current load and outputting a control signal so as to introduce a certain amount of refrigerant into the flow amount distribution resistor based on a driving mode corresponding to the detected load.

Abstract: Disclosed are a reel brake device and a magnetic recording and reproducing apparatus having the same. The reel brake device comprises a tension band mounted on an outer circumference of a reel disc to control tension, the reel disc which is rotatably mounted on the main chassis to drive a tape reel of a tape cassette, and a brake unit fixed on the main chassis to help the tension band be in contact with the outer circumference of the reel disc. This can replace a conventional brake unit having a complicated structure, and therefore, the number of component parts can be reduced.

Abstract: A reel cover of a magnetic recording/reproducing apparatus having an improved assembly construction with respect to a chassis and a method of manufacturing thereof provide a reel cover assembled with the chassis in a manner where a plurality of protrusions of a reel cover body are inserted in a plurality of recesses formed on the chassis. In this state, a resilient member formed at the reel cover body resiliently contacts a side surface of the chassis so that the protrusions are kept within the recesses. The reel cover can be assembled with the chassis in a simple manner without requiring extra securing means such as screws. Accordingly, the number of assembly parts can be decreased and the assembly procedure may be simplified, thereby productivity may be improved and manufacturing cost may be reduced.

Abstract: A magnetic recording and reproducing apparatus includes a deck to which a head drum is mounted to record and reproduce information with respect to a running tape, and a tape-end sensor to sense starting and finishing ends of the running tape. The tape-end sensor includes a light emitter mounted on the deck to project a light onto the tape being drawn and run from the tape cassette, a light receiver receiving light projected from the light emitter and transmitted through the tape, and a light interrupter blocking light projected to the light receiver that does not pass through the running tape.

Abstract: A magnetic recording and reproducing apparatus is provided which comprises a deck mounted with a drum motor and a capstan shaft, a main sliding member slidably installed on the deck and being driven by a driving force of the drum motor, a pivot lever rotatably installed on the deck and supporting a pinch roller for guiding a tape to be in contact with the capstan shaft, a review arm rotatably installed on the deck and being connected to the pivot lever by means of an elastic member, and a compressing lever for connecting the review arm and the sliding member. The compressing lever is driven by a driving force from the sliding member, and compresses the review arm in a direction such that the elastic member is stretched. The pivot lever is then rotated by the stretched elastic member and adheres the pinch roller closely to the capstan shaft.

Abstract: A deck mechanism for a magnetic recording/reproducing apparatus comprises a main deck provided with a head drum, a capstan motor, and a sub-deck installed on the main deck to be loaded/unloaded. The sub-deck is provided with a pair of reel discs, onto which tape reels of a tape cassette are seated; a pole base loading unit; a pinch roller unit for compressing the tape against a spindle of the capstan motor when the sub-deck is loaded; a brake unit; a main sliding member mounted on the main deck to be capable of reciprocatingly sliding, the main sliding member controlling the driving of the pinch roller unit; and a main cam gear mounted on the main deck. The main cam gear causes the sub-deck, the pole base loading unit, the brake unit, and the main sliding member to perform linked movements while the main cam gear is rotationally driven.

Abstract: Disclosed are a reel brake device and a magnetic recording and reproducing apparatus having the same. The reel brake device comprises a tension band mounted on an outer circumference of a reel disc to control tension, the reel disc which is rotatably mounted on the main chassis to drive a tape reel of a tape cassette, and a brake unit fixed on the main chassis to help the tension band be in contact with the outer circumference of the reel disc. This can replace a conventional brake unit having a complicated structure, and therefore, the number of component parts can be reduced.

Abstract: A reel cover of a magnetic recording/reproducing apparatus having an improved assembly construction with respect to a chassis and a method of manufacturing thereof provide a reel cover assembled with the chassis in a manner where a plurality of protrusions of a reel cover body are inserted in a plurality of recesses formed on the chassis. In this state, a resilient member formed at the reel cover body resiliently contacts a side surface of the chassis so that the protrusions are kept within the recesses. The reel cover can be assembled with the chassis in a simple manner without requiring extra securing means such as screws. Accordingly, the number of assembly parts can be decreased and the assembly procedure may be simplified, thereby productivity may be improved and manufacturing cost may be reduced.

Abstract: An improved magnetic tape guiding device for use with a magnetic tape transport system of a tape recorder and the like, and a method for using the same. The magnetic tape guiding system of the tape recorder transport system has a supply reel pole base assembly having a slant pole with a first guide unit having portions formed at both ends of the slant pole to function as a conventional roller for regulating upward and downward movement of the upper and lower edges of a moving magnetic tape, and a tension pole assembly having a tension pole with a second guide unit having portions formed at both ends of the tension pole to function as a conventional impedance roller for regulating upward and downward movement of the upper and lower edges of the moving magnetic tape. This arrangement can thus achieve 2-dimensional plane-traveling of the magnetic tape while also reducing the number of the parts of the guiding system.

Abstract: A head drum assembly is disclosed which can prevent a magnetic tape from departing from a tape traveling system. The head drum assembly comprises a head drum which records information to a magnetic tape traveling along a defined track or reproduces information recorded on the magnetic tape. A departure preventing member is provided on a top surface of the head drum so as to prevent the magnetic tape from departing from the head drum.

Abstract: A driving apparatus for loading/unloading a pair of pole-base assemblies that are reciprocated along a guide rail formed on a main deck to move a magnetic tape to contact to a head drum. The driving apparatus includes a first and a second link member, each connected with one end to each pole-base assembly, a first and a second loading gears, each connected to the other end of the first and the second link member, and being rotated in association with each other; and a main gear which is rotated by the power received from a driving motor mounted on the main deck and selectively engaged with the first loading gear upon rotation thereof. The main gear is rotated in association with one of the loading gears within a desired rotational range upon rotation thereof, so as to transfer power for loading/unloading the pole-base assembly.

Abstract: Disclosed are an air-conditioner capable of connecting a single stage indoor unit to a two-stage outdoor unit, and of improving an ability thereof to correspond to a heating load or a cooling load, and a method for controlling a driving thereof. For the purpose, the air-conditioner in accordance with the present invention comprises a converter which receives a first control signal for on-off controlling a compressor of an outdoor unit and an indoor fan of an indoor unit in the air-conditioner, and generates a second control signal for rotating the indoor fan at a high or low speed and varying a compression capacity of the compressor in the outdoor unit on the basis of a generation time of the received first control signal.

Abstract: A magnetic recording and reproducing apparatus and a method for braking a reel assembly comprising a lower disc rotatably supported by a stationary shaft located on the deck and an upper disc arranged on the stationary shaft to rotatably coupled to an upper portion of the lower disc. Thus, the upper and lower discs are rotatably coupled to a tape reel of a tape cassette. A disc gear is positioned between the upper and lower discs to receive power from a capstan motor. A friction member is disposed between and in contact with the lower disc.

Abstract: The present invention discloses an operation control method for a unitary air conditioner. The present invention improves the load response capabilities of compressors by operating them at three-stages of the maximum operation, minimum operation and intermediate operation using one or more compressors, and improves the energy efficiency and the amenity by determining the three-stage operation mode based on the previous operation status.

Abstract: A unitary air conditioning system comprises an outdoor unit including a compressor for compressing refrigerant, an outdoor heat exchanger for heat exchange of refrigerant, and an expander connected to the outdoor heat exchanger, for expanding refrigerant; a duct installed in each zone of a building; a plurality of central blower units, each unit having a heat exchanger connected to the outdoor unit by a refrigerant pipe and a blower for supplying the air heat-exchanged by the heat exchanger to the duct; and a cooling/heating control unit for selectively distributing a refrigerant from the outdoor unit toward the heat exchangers of the plurality of central blower units and controlling cooling or heating operation for each zone of the building. Accordingly, the plurality of blower units are systematically operated according to a load of each zone inside the building, so that the cooling or heating operation can be effectively performed on each zone.