A fluid temperature control system cools a fluid by means of a multiple refrigeration apparatus including a high-temperature-side refrigerator (100), a medium-temperature-side refrigerator (200) and a low-temperature-side refrigerator (300). The medium-temperature-side refrigerator (200) in the multiple refrigeration apparatus has a medium-temperature-side first evaporator (204) and a medium-temperature-side second evaporator (224). A high-temperature-side evaporator (104) of the high-temperature-side refrigerator (100) and a medium-temperature-side condenser (202) of the medium-temperature-side refrigerator (200) constitute a first cascade condenser (CC1). The medium-temperature-side second evaporator (224) of the medium-temperature-side refrigerator (200) and a low-temperature-side condenser (302) of the low-temperature-side refrigerator (300) constitute a second cascade condenser (CC2). The medium-temperature-side refrigerant and the low-temperature-side refrigerant are the same refrigerant. The fluid allowed to flow by a fluid flow apparatus is cooled by the medium-temperature-side first evaporator (204) of the medium-temperature-side refrigerator (200), and is then cooled by the low-temperature-side evaporator (304) of the low-temperature-side refrigerator (300).

A safety isolation valve module includes a conduit having a service port, an inlet, an outlet, and ball valves separating each of the inlet and the outlet from the conduit. The ball valves may be manually manipulating to open or close flow and can be used to isolate the service port from either or both sides of the refrigerant systems. When servicing the service port or other components of the refrigerant system, the valves may be shut to enable servicing of portions of the system without risking injury or losing significant amounts of refrigerant to the atmosphere.

A safety isolation valve module includes a conduit having a service port, an inlet, an outlet, and ball valves separating each of the inlet and the outlet from the conduit. The ball valves may be manually manipulating to open or close flow and can be used to isolate the service port from either or both sides of the refrigerant systems. When servicing the service port or other components of the refrigerant system, the valves may be shut to enable servicing of portions of the system without risking injury or losing significant amounts of refrigerant to the atmosphere.

A compressor includes: a first cylinder, the first cylinder being provided with a first gas intake and a first gas outlet, the first air outlet being connected to a predetermined heat exchanger; a second cylinder, the second cylinder being provided with a second gas intake and a second gas outlet, and the second gas outlet being connected to the predetermined heat exchanger; and a gas pre-exhausting device. The gas pre-exhausting device is provided on a cylinder block of the first cylinder or on an upper end surface of the first cylinder or a lower end surface of the first cylinder; the gas pre-exhausting device includes a gas pre-exhausting port and a first control valve controlling the gas pre-exhausting port to be open or closed; and the gas pre-exhausting port is connected to the second gas intake. Further disclosed is an air conditioner system including the compressor.

A compressor includes: a first cylinder, the first cylinder being provided with a first gas intake and a first gas outlet, the first air outlet being connected to a predetermined heat exchanger; a second cylinder, the second cylinder being provided with a second gas intake and a second gas outlet, and the second gas outlet being connected to the predetermined heat exchanger; and a gas pre-exhausting device. The gas pre-exhausting device is provided on a cylinder block of the first cylinder or on an upper end surface of the first cylinder or a lower end surface of the first cylinder; the gas pre-exhausting device includes a gas pre-exhausting port and a first control valve controlling the gas pre-exhausting port to be open or closed; and the gas pre-exhausting port is connected to the second gas intake. Further disclosed is an air conditioner system including the compressor.

An ice maker and a refrigerator having same. The ice maker comprises: a cooling part having a heat dissipation device and a metal piece; a liquid container configured to store liquid; a liquid supply part configured to supply liquid to the liquid container; a moving mechanism configured to rotate and move the liquid container; and a control part. The metal piece is mounted, so that a rod-shaped component made of metal extends downward from a base end to the tip, and the rod-shaped component is cooled by means of the heat dissipation device. The ice-making process is repeated multiple times under the control of the control part, and the following steps are carried out in the ice-making process: a liquid supply step, an ice making step, an avoidance step, a deicing step, and a recovering step. The ice maker can make ice within a short period of time.

An intermediate plate is supported by a bottom member through a plurality of second elastic members. A first compressor is supported by the intermediate plate through a plurality of first elastic members. A second compressor is supported by the same intermediate plate through a plurality of first elastic members.

An air conditioner includes: a heat-source-side unit including a compressor and a heat-source-side heat exchanger; use-side units each including a use-side heat exchanger; an intermediate unit that causes the use-side heat exchanger of each of the use-side units to individually function as an evaporator or a radiator of a refrigerant; and three or more connection pipes that connect the heat-source-side unit to the intermediate unit. The intermediate unit includes: an ejector that pressurizes the refrigerant; and a gas-liquid separator into which the refrigerant flowing out from the ejector flows. The refrigerant that has released heat in any of the use-side units that perform a heating operation is not pressurized by the ejector.

An air conditioner includes: a heat-source-side unit including a compressor and a heat-source-side heat exchanger; use-side units each including a use-side heat exchanger; an intermediate unit that causes the use-side heat exchanger of each of the use-side units to individually function as an evaporator or a radiator of a refrigerant; and three or more connection pipes that connect the heat-source-side unit to the intermediate unit. The intermediate unit includes: an ejector that pressurizes the refrigerant; and a gas-liquid separator into which the refrigerant flowing out from the ejector flows. The refrigerant that has released heat in any of the use-side units that perform a heating operation is not pressurized by the ejector.

An evaporator includes a cold plate configured to extract heat from one or more heat loads in proximity to the evaporator. The cold plate includes a housing, and a plurality of channels disposed through the housing, with at least one of the plurality of channels being a meandered channel.