Abstract: [Object of the Invention] An object of the present invention is to provide a method for processing the valve plate of a reciprocating compressor to prevent the suction valves and/or the discharge valves of the compressor from sticking on the valve plate at the portions abutting the valve plate, the productivity thereof being higher than that of the conventional method.

Abstract: The present invention provides a hot water supply apparatus capable of reducing energy consumption. That is, except during operation of heating water, when a detection temperature of a temperature sensor becomes equal to or lower than a set temperature, a circulating pump is operated and a compressor is operated at a second operating frequency having a lower frequency than a first operating frequency, thereby the compressor does not have to be repeatedly operated and stopped, and can be continuously operated in a state of reduced heating power.

Abstract: A variable displacement compressor comprising a displacement control valve disposed somewhere in a discharge pressure supply passageway capable of communicating with a crank chamber from a discharge chamber, and a fixed orifice disposed somewhere in a pressure relief passageway communicating with a suction chamber from the crank chamber, the displacement control valve being controlled in opening/closing operation to adjust a pressure in the crank chamber to control a piston stroke, wherein a part of the discharge pressure supply passageway and a part of the pressure relief passageway are formed as a common passageway communicating with a crank chamber end. Variable displacement control at a high reliability is possible with no foreign matter accumulation in the displacement control passageway, and the processing of a cylinder block is simplified.

Abstract: The present invention provides a vending machine reader/writer capable of improving the conveniences of commodity purchasing with use of electronic money, and a vending machine including the reader/writer. The vending machine reader/writer is disposed in the vending machine including a commodity selecting means, and performs settlement processing for the electronic money by reading/writing electronic money information stored in a predetermined information storing medium on the basis of a commodity selected by the commodity selecting means.

Abstract: A power transmission in which a driven body and a drive body for driving the driven body are rotated in the same direction and are coupled through a coupling portion, transmission of torque from the drive body is interrupted when the driving load of the driven body exceeds a predetermined level, and the coupling portion is constituted by combining members different from each other of a positive torque transmission member for transmitting torque in the direction of forward rotation and interrupting transmission of torque from the drive body by its own fracture when the driving load of the driven body exceeds the predetermined level and a negative torque transmission member capable of transmitting torque in the direction of reverse rotation. At a contact portion between the positive torque transmission member and the negative torque transmission member, interposed is a surface layer composed of a different kind of material from a material composing the positive and negative torque transmission members.

Abstract: A connection adapter is disposed intervening between a communication module for connection to a radio packet communication network and high-level equipment. The connection adapter transmits a communication request for second high level equipment to a management computer after connecting to the radio packet communication network. The management computer sends a calling message to second connection adapter. Upon receipt of the calling message, the second connection adapter connects to the radio packet communication network. Then, each of the connection adapter relay the communication between the high-level equipments.

Abstract: A communication apparatus comprising a communication module that serves as Data Circuit-terminating Equipment used in a radio packet communication network; an auxiliary circuit board on which said communication module is mounted; a main circuit board on which a communication controller is mounted; and a signal line for connecting said main circuit board to the auxiliary circuit board detachably; wherein said main circuit board further comprises a detecting means for detecting a type of the connected communication module based on a pattern of a signal status on the signal line at a start-up, and said communication controller performs a communication control operation in accordance with a result of detection by the detecting means.

Abstract: An electric compressor having a compression mechanism, an electric motor for driving the compression mechanism, and a housing for containing the compression mechanism and the electric motor. An opening formed in the housing is closed with a lid member to which a sealed terminal is attached, and an electroconductive pin of the sealed terminal is fitted into a socket connected to a lead wire of the electric motor. The socket is embedded in an insulative member, and the electroconductive pin of the sealed terminal is inserted into a hole formed in the insulative member and is fitted into the socket. An insulation section that surrounds the base portion of the electroconductive pin and the insulative member hold a ring member that is formed from an insulative elastic material and surrounds the electroconductive pin, and this portion held is sealed and insulated by elastic deformation of the ring member.

Abstract: In this electromagnetic clutch, a compressive force is generated in a plate spring when an armature plate is contact with a first rotor. Therefore, a force in the direction away from the first rotor acts on a first bent portion of a plate spring. However, an extension portion of a second rotor is capable of abutting to the first bent portion from the direction opposite to the first rotor. So a stress generated in the first bent portion is dispersed to the extension portion.

Abstract: A shaft sealing device (80) that partitions a high-pressure zone and a low-pressure zone from each other in a fluid machine has an elastic member (86) including a seal portion (88) that is brought into sliding contact with a seat face of a contact-target member that is either a rotary shaft (60) or a casing (12), and a case (82) that supports the elastic member (86). The elastic member (86) has a first elastic portion that continues to a high-pressure side boundary of the seal portion (88), which is located in the high-pressure zone side, and a second elastic portion that continues to a low-pressure side boundary of the seal portion (88), which is located in the low-pressure zone side. The case (82) restrains regions of the first and second elastic portions, the regions being located away from the seal portion (88).

Abstract: A variable displacement inclined plate type compressor comprising a spindle, an inclined plate provided to be inclinable relative to the spindle and rotating together with the spindle, a pair of shoes arranged to hold the inclined plate therebetween, and a piston coupled with the inclined plate through the pair of shoes, wherein the quantity of stroke of the piston is determined depending on the inclination angle of the inclined plate. In the sliding surface of the inclined plate with which the planar part of the shoe comes into contact, a groove is provided such that the contact area of the shoe and the sliding surface of the inclined plate when the inclination angle of the inclined plate is minimum becomes smaller than that when the inclination angle of the inclined plate is maximum. In such a structure, power consumption can be reduced during low displacement operation without damaging reliability of the compressor.

Abstract: An air conditioner includes a fixed displacement-type first compression mechanism and a variable displacement-type second compression mechanism independent from each other in a refrigeration cycle, and further includes second compression mechanism displacement control means, compression mechanism operation switching control means, an evaporator for refrigerant, a condenser, a blower, evaporator temperature detection means, and evaporator target temperature calculation means. When the refrigeration cycle is operated only by the first compression mechanism, referring to a temperature (Teva) detected by the evaporator temperature detection means, a temperature (Toff) calculated by the evaporator target temperature calculation means and a predetermined value A, if a condition of Teva?Toff?A is satisfied, both compression mechanisms are operated simultaneously.

Abstract: An electric compressor control device includes: an inverter for electric compressor motor; a communication microcontroller arranged in a low-voltage region for transmission of an instruction signal via a high-speed communication bus; and a control microcontroller arranged in a high-voltage region and connected to the communication microcontroller via an insulation element for transmitting the instruction signal from the communication microcomputer as an inverter control signal to the inverter. The power voltage of the communication microcomputer is supplied from a low-voltage power source. The voltage from the low-voltage power source is transformed via a transformer and supplied as a power voltage of the control microcontroller.

Abstract: A device executing a start-up control method for an electric scroll compressor has a thermistor (18) and a pressure sensor (20) which, prior to the start-up of the scroll compression unit, detect temperature and pressure of a suction refrigerant introduced into the compression unit (2), and a controller (10) for controlling driving of a motor (4) of the compression unit (2) at the start-up of the compressor. The controller (10) determines at the start-up of the compressor whether or not a liquid refrigerant exists in the compression unit (2) on the basis of the detected temperature and pressure; selects either a normal start-up mode or a liquid-discharge mode in which the rotational speed of the motor (4) is regulated to be lower than in the normal start-up mode, according to the determination result; and controls the start-up of the compression unit (2) through the motor (4) according to the selected mode.

Abstract: The present invention provides a compressor having casings fixed together in a manner allowing the compressor to have a reduced sized as well as reusability. The compressor according to the present invention comprises a plurality of casings (1a, 1b) each having an open end designed to be brought into butt contact, the casings being arranged with the open ends in butt contact with each other, thereby constituting a pressure vessel enclosing a compressing unit; a flange-like projection (3) formed on the outer circumference of the open end of each of the casings, the projections of the casings butted together forming a pair; and a plurality of fixing members (4a to 4c) each in a shape corresponding to a section which would be obtained by dividing the open end of the casing, and having a groove inside, the groove being designed to engage with the paired projections butted together.

Abstract: A connection adapter is disposed intervening between a communication module for connection to a radio packet communication network and high-level equipment. The connection adapter comprises a connection controller for controlling connection between the high-level equipment and the radio packet communication network, and a communication controller for relaying the communication by the high-level equipment using the communication module. When the communication controller of the connection adapter detects duplication of a TCP packet received from the high-level equipment, the communication controller discards the duplicated packet.

Abstract: The present invention provides a compressor capable of arranging a refrigerant discharge port regardless of the location of a separation chamber. In this compressor, a separation tube is pressed in through an opening of the separation chamber, and by engaging a regulating ring with an engagement groove provided in the inner wall of the separation chamber, the movement of the separation tube in the anti-insertion direction is regulated. Therefore, unlike the conventional compressor, a refrigerant discharge pipe for regulating the movement of the separation tube in the anti-insertion direction need not be connected to the upper part of the separation tube, and the refrigerant discharge port can be arranged freely regardless of the location of the separation section.

Abstract: This invention provides a compressor that can efficiently return lubricating oil through an oil storage chamber to a lubrication target site without residence of the lubricating oil within the discharge chamber and can prevent deterioration in lubrication performance. The compressor comprises a housing having a discharge chamber for lubricating oil-containing hydraulic fluid and a discharge port communicating with the discharge chamber, a rotational shaft extended into the housing, a compression unit for the suction, compression and discharge of the hydraulic fluid through the drive of the rotational shaft, and a lubricating oil separator comprising a separation chamber and an oil storage chamber. The separation chamber is provided between the discharge chamber and the discharge port in the housing. The oil storage chamber is located below the separation chamber. Lubricating oil separated from the hydraulic fluid in the separation chamber is introduced through an oil hole is stored in the oil storage chamber.

Abstract: A variable displacement compressor capable of controlling a piston stroke by openably controlling a displacement control valve to regulate a pressure in a crank chamber, comprising the displacement control valve disposed in a passageway from a discharge chamber to the crank chamber, and a fixed orifice provided in a passageway from the crank chamber to a suction chamber, the displacement control valve further comprising a pressure sensing member for the pressure in the suction chamber or the crank chamber, a valve element having a valve part opened and closed in response to the operation of the pressure sensing member, a valve chamber for disposing the valve part therein and allowing the pressure in the crank chamber to act therein, a partition wall disposed around the valve element, a pressure chamber partitioned from the valve chamber by the partition wall and allowing the pressure in the suction chamber to act therein, and a solenoid provided to the other end of the valve element, wherein a flow passage of

Abstract: When an armature plate is attracted to a rotor so that the turning force of the rotor is transmitted to the armature plate, the turning force of the armature plate is transmitted to a main shaft via a plate spring. An angle (hereinafter referred to as a slope angle) formed between the plate spring and the armature plate is set so as to be not smaller than 10° and not larger than 63°. Therefore, since the slope angle is larger than the slope angle (about 3°) of the general electromagnetic clutch, the torque increase effect increases about 5 percent as compared with the general electromagnetic clutch, and also an excessive pressing force of the plate spring does not develop.