Abstract: An air conditioner provided with a heat-pump system refrigerating cycle including a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger installed within a room, and a radiation type heat exchanger connected in a circuit. An indoor unit includes the indoor heat exchanger, the radiation type heat exchanger displaced in a state exposed to the room and an indoor fan. A selector is provided to select between a warm-air heating during which the indoor fan is turned on and a radiant heating during which the indoor fan is turned off. The capacity of the compressor during the radiant heating mode is adjusted below the capacity during the warm-air heating mode.

Abstract: A temperature setting unit is operated to set a desired temperature. An indoor temperature detector detects an indoor temperature. A timer is operated to set an operation start time. An indoor unit includes at least an indoor heat exchanger, an air duct associated with the indoor heat exchanger, a heat radiation member located in the air duct, a heat accumulator thermally coupled to the heat radiation member, and an electric heater for selectively supplying heat to the heat accumulator. An outdoor unit includes at least a compressor for cooperating with the indoor heat exchanger to constitute a heat pump refrigeration cycle for heating operation, and an outdoor exchanger. A controller outputs a first control signal for preheating the electric heater a predetermined period of time before operation start time by counting preset data of the operation start time from the timer, and a second control signal for setting the heat pump refrigeration cycle in a drive state at the operation start time.

Abstract: A refrigeration cycle includes at least a variable-capacity compressor, an outdoor heat exchanger, an evacuation device, and an indoor heat exchanger, all of which communicate with each other. A reheater is arranged in association with the indoor heat exchanger. A temperature setting unit sets a desired indoor temperature. A humidity setting unit sets a desired indoor humidity. A temperature detecting unit detects an indoor temperature. A humidity detecting unit detects an indoor humidity.

Abstract: An apparatus for automatically loading one or more kinds of nuclear fuel pellets in fuel cladding tubes for producing nuclear fuel rods comprises at least one pellet transporting tray transferred from a tray stacking unit and provided with a plurality of grooves on which the fuel pellets are mounted, at least one pellet aligning tray provided with a groove selectively connected with one of the grooves of the pellet transporting tray at one end of the aligning tray, and a fuel cladding tube supporting device located in the vicinity of the other end of the aligning tray and adapted to support a number of fuel cladding tubes so that a selected one fuel cladding tube is operatively connected to the aligning tray. The fuel pellets are transferred from the transporting tray into the aligning tray by means of a pushing device and the row of the pellets transferred on the groove of the aligning tray is moved forwardly until it abuts against a stopping mechanism located in association with the aligning tray.

Abstract: The air conditioning apparatus comprises a variable speed compressor provided outside of a room for compressing a refrigerant, a heat-exchanger provided inside of the room together with a blower, a controller for controlling the operation of the compressor and the blower, and a plurality of sensors connected with the controller for detecting room temperature, heat-exchanger temperature and humidity in the room. A switching means is further provided for selectively setting the operational mode of the controller, and means is further provided in the controller for controlling the rotating speed of the compressor and the quantity of air delivered from the blower based on the setting of the switching means and the outputs of the sensors such that during the cooling operation of the apparatus, the temperature of the heat-exchanger is varied in two or more predetermined ranges.

Abstract: An air conditioning apparatus to which an operating current is supplied through a plug includes a compressor and a detector for detecting one of the temperature level of the plug and the operating current level flowing through the plug. When the detected level of the plug is above a first upper limit during a predetermined time after the start of the compressor, the output level of the compressor is reduced for decreasing one of the temperature level of the plug and the operating current level flowing through the plug below the first upper limit. When the detected level of the plug is above a second upper limit below the first upper limit after the predetermined time, the output level of the compressor is reduced for decreasing one of the temperature level of the plug and the operating current level flowing through the plug below the second upper limit.

Abstract: A frequency converting device is provided with a converter for converting ac input power into dc power. The device includes an inverter for inverting an output (dc power) of the converter into an ac output power, and adjustment device for adjusting an output waveform of the inverter in accordance with the voltage values of the ac input power. The adjustment device comprises a memory which stores adjustment data corresponding to the voltage value of the ac input power source connected to the converter, and a selector for selecting a certain adjustment data from the memory in accordance with the voltage value of the ac input power to which the device is connected. Thus, even when the voltage of the ac input power is changed, the effective output of the inverter can be kept substantially constant by adjusting on/off times of the switching elements constituting the inverter to vary a duty factor of the inverter output.

Abstract: A heat-pump type air conditioning apparatus comprising a compressor, a condenser, a throttle member, and an evaporator, which constitute a refrigerant circulation circuit, and an unloading circuit is connected to the compressor to carry out a load reduction control. The air conditioning apparatus further comprises a detector for detecting load condition applied on the compressor and generating a signal representing the detected load condition, and a detector for detecting a condition of a power source for driving the compressor and generating a signal relating to the detected condition of the power source. A control unit is operatively connected to the detectors for controlling the switching of the air conditioning apparatus from a normal, full-capacity operation to a controlled, reduced capacity operation or vice versa in accordance with the signals regarding the detected load and the detected condition of the power source.

Abstract: A humidity-measuring device used with an air conditioner provided with an interior heat exchanger and refrigerant pipe which comprises:a first sensor which is provided at an inlet of the interior heat exchanger and produces a first output signal denoting a temperature of air streams drawn into the interior heat exchanger;a heat conductor positioned in a state extending to the inlet at one end of that portion of the refrigerant pipe, through which the refrigerant flows with a low pressure;a second sensor which is disposed in that portion of the heat conductor which faces the inlet and produces a second output signal; anda system controller which is provided with a memory for storing data on the air humidity corresponding to the first and second output signals, and measures the humidity of the sucked air from the data stored in the memory in accordance with the first and second output signals from the first and second sensors.

Abstract: An air conditioner comprises a device body having first and second air channels, an evaporator disposed in the first air channel for cooling the air passing therethrough, a first drain tray disposed below the evaporator for receiving dew drops formed on the evaporator and falling therefrom and thus for containing the drain, and a second drain tray disposed below the first drain tray for receiving dew drops formed on the first drain tray and falling therefrom and the drain overflowing the first drain tray. The second air channel is defined between the first and second drain trays.

Abstract: An interior unit of a split type air-conditioning apparatus which is usually mounted on a wall of a room to be cooled and is extremely thin. The unit consists of a cabinet structure including a front panel, a middle frame and a rear plate, said front panel having an air inlet opening and an air outlet opening. Also included is a centrifugal fan, preferably a turbo fan with a plurality of backward curved blades, specially designed to adapt to the unit. The means for driving said fan are designed to be partly accommodated in the body of the turbo fan for the purpose of decreasing the depth of the unit.