A temperature control method is performed by a temperature control apparatus including a heat exchanger configured to exchange heat using a phase change of a refrigerant, a rotary pump configured to receive the refrigerant from the heat exchanger and fuse the refrigerant with oil contained inside the rotary pump, and an oil refrigerant separator configured to receive the refrigerant fused with the oil from the rotary pump and separate the refrigerant from the oil. The temperature control method includes the steps of: circulating the refrigerant separated from the oil back to the heat exchanger; and adjusting at least one of a rotation speed of a rotor of the rotary pump, a position of a valve arranged at a connecting portion of the rotary pump and the heat exchanger, and a position of an airflow adjustment valve arranged at a connecting portion of the oil refrigerant separator and the heat exchanger.

A temperature control method is performed by a temperature control apparatus including a heat exchanger configured to exchange heat using a phase change of a refrigerant, a rotary pump configured to receive the refrigerant from the heat exchanger and fuse the refrigerant with oil contained inside the rotary pump, and an oil refrigerant separator configured to receive the refrigerant fused with the oil from the rotary pump and separate the refrigerant from the oil. The temperature control method includes the steps of: circulating the refrigerant separated from the oil back to the heat exchanger; and adjusting at least one of a rotation speed of a rotor of the rotary pump, a position of a valve arranged at a connecting portion of the rotary pump and the heat exchanger, and a position of an airflow adjustment valve arranged at a connecting portion of the oil refrigerant separator and the heat exchanger.

A compressor may include first and second scrolls, an axial biasing chamber, and a control valve. The second scroll includes an outer port and an inner port. The outer and inner ports may be open to respective intermediate-pressure compression pockets. The control valve may be in fluid communication with the inner port, the outer port, and the axial biasing chamber. Movement of the control valve into the first position allows fluid communication between the inner port and the axial biasing chamber. Movement of the control valve into the second position allows fluid communication between the outer port and the axial biasing chamber.

Pump device has pump housing with annular portion; a deformable pump ring that defines annular pump chamber; a first connection and a second connection in fluid communication with the-pump chamber; an eccentric rotatable relative to the pump housing and arranged such that the eccentric deforms the-pump ring and pump ring presses against the annular to pump fluid along the-pump chamber from the-first to the-second connection depending on the current rotational position of the eccentric. A clamping element presses the-pump ring against the-annular portion of the pump housing in a clamping link region. The pump ring has at least one recess for accommodating at least part of the clamping element and is dimensioned to provide a distance between the radially inner side of the clamping element and the-pump ring.

A scroll compressor includes a shell, a fixed scroll and an orbiting scroll disposed in the shell, a first scroll wrap and a second scroll wrap that are provided in the fixed scroll and the orbiting scroll, respectively, and that are engaged with each other to form a plurality of compression chambers, a crankshaft that causes the orbiting scroll to perform eccentric revolving motion, a tip seal member that is inserted in the tip of the second scroll wrap along the spiral direction and that is in sliding contact with the first baseplate of the fixed scroll, and injection ports that are provided through the first baseplate of the fixed scroll and that introduce refrigerant at an intermediate pressure between suction pressure and discharge pressure into the compression chambers from the outside of the shell.

Disclosed is an oil separation barrel, which includes a barrel body and an oil separation and filtration structure provided in the barrel body, the barrel body provided with an oil separation cavity and an output port. An output gas flow is filtered by the oil separation and filtration structure, then enters the oil separation cavity, and finally is output from the output port. At least part of a barrel wall of the barrel body forming the oil separation cavity includes two or more layers of circumferential walls. The output gas flow flows in the oil separation cavity in such a manner that it changes the advance direction multiple times, which can make the flow field uniform and reduce noise and vibration; and the output gas flow impacts the circumferential wall surfaces in the oil separation barrel multiple times, which can further improve the efficiency of oil separation.

A scroll compressor may include a casing configured to contain oil at a lower portion; a drive motor provided in the casing; a rotational shaft coupled to the drive motor, and having an oil supply passage in order to guide oil contained in the casing to an upper side; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap to form a compression chamber with the fixed wrap, and having rotational shaft coupling portion. One or more oil dimples may be formed at a peripheral end surface of the rotational shaft coupling portion. With such a configuration, as oil may be smoothly supplied to an end surface of the orbiting wrap near the rotational shaft coupling portion, abrasion may be prevented.

A stator for an eccentric screw pump with an internal hollow space with a helically coiled inner contour for accommodating a rotor. The stator includes a stator core arranged in a stator casing, which stator core includes at least two radially separable core parts. According to the invention, the at least two radially separable core parts are each made from a metallic material or a technical ceramic material. The stator casing is a stator tube and is made of a metallic material. The stator casing is shrink-fitted onto the stator core. The invention also relates to an eccentric screw pump and a method for producing a stator.

A scroll compressor comprises a fixed bearing seat, a scroll fixed disk, a scroll orbiting disk, and an orbiting disk bearing seat. On the orbiting disk bearing seat, there are circumferentially three first bearing bores, and on the fixed bearing seat, there are circumferentially three second bearing bores. The front end of the locating crankshaft is rotatably connected inside the first bearing bore through the first bearing, and the rear end of the locating crankshaft is rotatably connected inside the second bearing bore through the second bearing. There is a through hole on the bottom face of the second bearing bore. The rear end of the locating crankshaft passes through the second bearing and is inserted inside the through hole. In addition, the end on which the locating crankshaft passes through the second bearing is screw connected with a locking nut.

A method for operating a progressive cavity pump wherein the stator has at least first and second active stator sections that are at different locations on the stator, comprising inserting a first rotor having a first active rotor section that is aligned with the first active stator section, and rotating the first rotor relative to the first active stator section such that the aligned first active rotor and stator sections generate a pumping force. Subsequently, the first rotor is removed and a second rotor is inserted having a second active rotor section that is aligned with the second active stator section, and rotating the second rotor relative to the second active stator section such that the aligned second active rotor and stator sections generate a pumping force.