Abstract: Provided is a production method for a water-absorbing resin in which an absorption capacity without pressure of the resulting water-absorbing resin is high and a water-absorbing resin can be efficiently obtained. The production method for a water-absorbing resin including a polymerization step of polymerizing a monomer composition containing an internal crosslinking agent and a monomer to obtain a crosslinked hydrogel polymer, and a drying step of drying the crosslinked hydrogel polymer to obtain a dry polymer, in which the crosslinked hydrogel polymer to be subjected to the drying step contains 50 ppm or more of hydrogen peroxide with respect to the solid content mass of the crosslinked hydrogel polymer, and the crosslinked hydrogel polymer is heated during the drying step so that a maximum reaching temperature of the crosslinked hydrogel polymer exceeds 160° C., and/or the dry polymer is heated after the drying step so that a maximum reaching temperature of the dry polymer exceeds 160° C.

Abstract: A heat exchanger is constructed by tubes, corrugated fins and head pipes, which are assembled together. Herein, the tube is constructed by bending a flat plate whose surfaces are clad with brazing material to form a first wall and a second wall, which are arranged opposite to each other with a prescribed interval of distance therebetween to provide a refrigerant passage. Before bending, a number of swelling portions are formed to swell from an interior surface of the flat plate by press. By bending, the swelling portions are correspondingly paired in elevation between the first and second walls, so their top portions are brought into contact with each other to form columns each having a prescribed sectional shape corresponding to an elliptical shape or an elongated circular shape each defined by a short length and a long length.

Abstract: The present invention relates to an electromagnetic clutch device for a compressor used for air conditioners in vehicles and so forth. The object of the present invention is to provide an electromagnetic clutch device whose pulley can be downsized regardless of the outer diameter of a coil even when the so-called alignment is small. In order to achieve this object, an electromagnetic clutch device according to the present invention comprises a drive shaft forming a part of a compressor mechanism which is accommodated in a housing of the compressor and projecting through a nose of the housing; a drive rotor accommodating a coil for the electromagnetic clutch and rotatably supported on the circumference of the nose by means of a clutch bearing; an armature plate opposing the coil and connected to a projecting end of the drive shaft so as to rotate with the drive shaft; and a pulley fixedly attached to the drive rotor, wherein the pulley is arranged between the housing and the coil.

Abstract: A heat exchanger is constructed by tubes, corrugated fins and head pipes, which are assembled together. Herein, the tube is constructed by bending a flat plate whose surfaces are clad with brazing material to form a first wall and a second wall, which are arranged opposite to each other with a prescribed interval of distance therebetween to provide a refrigerant passage. Before bending, a number of swelling portions are formed to swell from an interior surface of the flat plate by press. By bending, the swelling portions are correspondingly paired in elevation between the first and second walls, so their top portions are brought into contact with each other to form columns each having a prescribed sectional shape corresponding to an elliptical shape or an elongated circular shape each defined by a short length and a long length.

Abstract: The present invention relates to an electromagnetic clutch device for a compressor used for air conditioners in vehicles and so forth. The object of the present invention is to provide an electromagnetic clutch device whose pulley can be downsized regardless of the outer diameter of a coil even when the so-called alignment is small. In order to achieve this object, an electromagnetic clutch device according to the present invention comprises a drive shaft forming a part of a compressor mechanism which is accommodated in a housing of the compressor and projecting through a nose of the housing; a drive rotor accommodating a coil for the electromagnetic clutch and rotatably supported on the circumference of the nose by means of a clutch bearing; an armature plate opposing the coil and connected to a projecting end of the drive shaft so as to rotate with the drive shaft; and a pulley fixedly attached to the drive rotor, wherein the pulley is arranged between the housing and the coil.

Abstract: An object of the present invention is to make a housing for a ceiling-mounted type air conditioner small-sized without decreasing the performance and capacity of the air conditioner, and particularly to decrease the length of the housing in the depth direction, thereby facilitating the installation of the air conditioner and improving the room appearance. To achieve the above object, a heat exchanger is bent into a doglegged shape, the bent portion thereof is convex to the air inlet side, and the heat exchanger is inclined so as to be raised on the air inlet side. A cross flow fan rotating around a horizontal axis is disposed on the downstream side of the heat exchanger.

Abstract: A zone-forming apparatus adapted to direct a jet-stream in a radial direction by a guide member, the jet-stream being emitted from jet-stream generator which is arranged above the apparatus, and an air curtain thus formed is utilized to define a working space.

Abstract: In an operation mode controller wherein a sensor for sensing a quantity of a variable to be controlled is provided and a plurality of operation modes are changed from one to another in accordance with the sensed quantity to set any desired mode, the controller includes; a memory for setting and storing change conditions of the plural operation modes; apparatus preset for determining a set of threshold values for each of the plurality of operation modes, selecting apparatus for choosing the set of threshold values corresponding to a preset operation mode; an switching device for changing the operation modes in accordance with the change conditions when the sensed quantity of the variable that is to be controlled exceeds the chosen set of threshold values corresponding to the preset operation mode.

Abstract: A method for controlling a temperature of an object to be cooled or heated by a cooling/heating apparatus is improved in that a controllable temperature range of the object is divided into three or more sections and in the respective temperature sections, the temperature of the object is controlled through methods suitable for the respective temperature sections.

Abstract: A method for controlling a temperature of an object to be cooled or heated by a cooling/heating apparatus is improved in that when all of a plurality of temperature detectors for detecting a temperature of the object are operating normally, the cooling/heating capacity of the cooling/heating apparatus is regulated in response to input signals consisting of the detection temperature of the respective temperature detectors according to an operation pattern set in a normal time thermostat. When it has been determined that a certain temperature indicated by a detector is abnormal, then the cooling/heating capacity of the cooling/heating apparatus is regulated in response to input signals consisting of the detection temperatures of the other normal temperature detectors according to an operation pattern set in an abnormal time thermostat that is different from the operation pattern set in the normal time thermostat; thus the temperature of the object can thereby be controlled.

Abstract: An improved air cooling type heat exchanger for a refrigerating apparatus accommodated in a container is disclosed, wherein the improvement consists in that the air cooling type heat exchanger is divided into a plurality of segments which are arranged in a stepped relation in the direction of main air flow in such a manner that they overlap with a certain distance kept between the adjacent ones. Thus, it is assured that the heat exchanger is designed and constructed in smaller dimensions and moreover it is operated at a high efficiency.

Abstract: An improved refrigerating apparatus including a compressor, air cooling type condensers, an expansion valve and an evaporator which are connected in series one after another in the refrigerating system, is disclosed, wherein the improvement consists in that the air cooling type condensers comprise an upstream air cooling type condenser and a downstream air cooling type condenser which are separately arranged in the refrigerating system and a water cooling type which condenser is disposed between both the upstream and downstream air cooling type condensers. Owing to the arrangement of the refrigerating apparatus in accordance with the invention, reduced space required for mounting the refrigerating apparatus, and decreased volume of refrigerant required for operating the refrigerating apparatus are assured.

Abstract: A refrigerating apparatus adapted for storage of cold storage goods as well as frozen goods and having both a heater and a cooler is controlled by an improved temperature control device, which includes a detector for detecting a temperature of return air from the interior of a storage area of the refrigerating apparatus and a detector for detecting a temperature of an air output which is blown into the interior of the storage area, and which controls either the higher one of the two detected temperatures or the lower one of the two detected temperatures depending upon a set temperature. In the case of storing cold storage goods, the lower one of the two detected temperatures is controlled so as to be maintained at the set temperature, whereas in the case of storing frozen goods, the higher one of the two detected temperatures is controlled so as to be maintained at the set temperature.