The absorbing device includes a hollow enclosed chamber including two pot parts. Open ends of the pot parts are connectable to each other by welding or soldering. Each of the pot parts is integrally formed in an opposing end of an air-conditioning conduit, wherein open ends of the pot parts are oriented toward each other. Each of the pot parts is provided with a reduced passage opening interconnected with an internal space of the air-conditioning conduit via a tapered section.

A climate-control system may include a compressor and a control module. The compressor includes a motor driving a compression mechanism to compress a working fluid. The control module is in communication with the motor and may be configured to determine a balance speed of the motor at which a forward-rotational inertial force of the compression mechanism is equal to a backward-rotational gas force on the compression mechanism. The control module may be configured to adjust a running speed of the motor to the balance speed after receipt of a compressor-shutdown-command and before shutting down the compressor.

An accumulator to separates gas refrigerant and liquid refrigerant. The accumulator includes a casing, and a resonance-suppressing member installed in an internal space of the casing. The casing has a cylinder portion having a cylinder axis extending along a vertical direction, an upper lid portion linked with an upper end of the cylinder portion, and a lower lid portion linked with a lower end of the cylinder portion. The resonance-suppressing member is installed at a height position that, in a case in which a standing wave of pressure having a first antinode, a node, and a second antinode from the upper lid portion toward the lower lid portion is generated in the internal space, is near a height position of at least one of the first antinode and the second antinode.

Provided is a muffler for an air-conditioning apparatus, which is compact and has a small pressure loss, and an air-conditioning apparatus including the same. The muffler for an air-conditioning apparatus including a muffler main body which has small diameter portions on an inlet side and an outlet side, the small diameter portions having inner diameters smaller than an inner diameter of a central portion of the muffler main body, an inlet pipe connected to the small diameter portion on the inlet side of the muffler main body; and an outlet pipe connected to the small diameter portion on the outlet side of the muffler main body. The inlet pipe is inserted into the muffler main body, and has a distal end positioned at a center of a length from an inlet to an outlet of the muffler main body. The distal end side of the inlet pipe inserted into the muffler main body has an inner diameter smaller than an inner diameter of the inlet pipe on an upstream of the distal end side.

An air conditioner includes an outdoor unit, a plurality of indoor units, a plurality of expansion valves which are provided upstream of indoor heat exchangers, a plurality of on-off valves which are provided upstream of the expansion valves, and control unit wherein when the indoor units include a stopping indoor unit and an operating indoor unit currently operating, and when a stopping of the stopping unit is due to thermostat-off operation, the control unit performs a procedure to stop the stopping unit, the procedure including closing an on-off valve that corresponds to the stopping unit and driving an indoor fan in the stopping unit until pressure in a part between the on-off valve and an expansion valve that corresponds to the stopping unit and pressure in a part downstream of the first expansion valve are equalized, fully opening the expansion valve, and stopping the indoor fan.

Refrigeration systems and control methods therefor are described. The refrigeration systems include a main circuit to connect, through a pipeline, a multi-stage compressor, a condenser, an economizer, a main throttling element, and an evaporator. An air supply branch is configured to connect to the air outlet of the economizer and the intermediate stage air inlet of the multi-stage compressor. A liquid injection branch is configured to connect to the intermediate stage air inlet of the multi-stage compressor from a section having a high-pressure liquid-phase refrigerant in the main circuit. Through the design of the liquid injection branch, the liquid-phase refrigerant can be introduced when vibration or noise of the unit exceeds a limit. The liquid-phase refrigerant, in the form of droplets, can effectively absorb the sound wave energy in the compressor pipeline to reduce an overall discharge pulsation of the compressor and reduce the noise and vibration of the condenser.

A cryocooler includes a second-stage cooling stage, a second cylinder which includes the second-stage cooling stage on a terminal of the second-stage cylinder, a second-stage displacer which includes a magnetic regenerator material and is accommodated in the second-stage cylinder so as to be able to reciprocate in the second-stage cylinder, and a tubular magnetic shield which is installed on the second-stage cooling stage and extends along the second-stage cylinder outside the second-stage cylinder. The magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is 60 MS (Mega-Siemens) to 1980 MS.

A retaining assembly secures an equipment item within an aircraft galley compartment. The retaining assembly may include a turn button assembly including a turn button connected to a front edge of the galley compartment to secure the equipment item within the galley compartment. The turn button rotates between a first position for allowing insertion or release of the equipment item from the galley compartment and a second position for securing the equipment item within the galley compartment. A turn button recess on an inner surface of a panel door that is coupled to an edge of an opening for the galley compartment receives the turn button of the turn button assembly when the turn button is in the second position to allow the panel door to fully close over the opening for the galley compartment.

An air conditioner includes an outdoor heat exchanger configured to exchange heat between a refrigerant and outdoor air; an indoor heat exchanger configured to exchange heat between the refrigerant and indoor air; a first pipe configured to provide a channel for the refrigerant flowing out of the outdoor heat exchanger and having a first inner diameter; a second pipe configured to provide a channel for the refrigerant flowing into the indoor heat exchanger; a coupling member configured to couple end portions of the first pipe and the second pipe; and a first insertion pipe inserted in the second pipe at the end portion of the second pipe and having a second inner diameter smaller than the first inner diameter of the first pipe.

A mounting arrangement secures a refrigerator compressor to a support base member through a plurality of elastomeric mounts secured on pin elements with retainers. The mounts include head portions which extend through openings provided in an elongated plate fixed to the compressor. The mounts are specifically formed with a rounded bottom to pre-load the mounting arrangement and prevent vibration transmission through cores of the mounts. In addition, each mount includes a plurality of vertically spaced rings which provide shock protection against a large impact force by deflecting and potentially contacting each other, while normal vertical isolation occurs by deflection of an uppermost one of the rings. The mounts are formed with various undercuts which allow the mounts to be optimized for the mass and operational frequency of the compressor.