Abstract: A sheet conveying apparatus includes a sheet accommodating unit for accommodating a plurality of sheets, a sheet feeding unit for feeding sheets from the sheet accommodating unit, separation pawls for individually separating the sheets fed from the sheet feeding unit, a manual feeding port for manually feeding a sheet between the sheet accommodating unit and the sheet feeding unit, and a manually-fed-sheet guiding unit disposed between the sheet accommodating unit and the sheet feeding unit for guiding the sheet manually fed from the manual feeding port. The manually-fed-sheet guiding unit is displaceable an amount sufficient to allow the formation of a loop in a sheet during the separation by the separation pawls.

Abstract: A cooling and heating concurrent operation type of multiple refrigeration cycle comprises an indoor unit including a variable delivery type of compressor and an outdoor heat exchanger; indoor units including indoor heat exchangers, respectively; triple connection pipes of a high pressure gas pipe, a high pressure liquid pipe and a low pressure gas pipe, the triple connection pipes connecting between the outdoor unit and the indoor units; pressure detection means for detecting the intake pressure of the compressor and the discharge pressure of the compressor; and calculation and control means for comparing two detected values of the intake pressure and the discharge pressure of the compressor with two set values of a set intake pressure and a set discharge pressure, and for making variable controls of the compression capability of the compressor and the heat exchange capability of the outdoor heat exchanger based on the respective deviation values between the respective detected values and the respective set v

Abstract: A room-warming/cooling and hot-water supplying heat-pump apparatus comprises a refrigerant circuit provided with a compressor, a four-way valve for switching room warming and cooling operations, a room side heat exchanger, a reversible flow type expansion device and an outdoor side heat exchanger, wherein a first switching means is connected to the outlet side of the compressor; a first branch of the switching means is connected to the four-way valve and a second branch of the first switching means is connected to one end of a heating coil in a hot water tank; the other end of the heating coil extends out of the hot water tank and has a branched part. A pipeline including the branched part has both ends connected to the refrigerant circuit at both sides of the expansion device in which at least one valve means is provided in the pipeline including the branched part and the first switching means and the valve means are controlled by a control device.