A scroll pump includes an inlet and an outlet, a fixed scroll and an orbiting scroll intermeshed with each other, wherein the fixed scroll and orbiting scroll define a space therebetween. The scroll pump further includes a biasing apparatus configured to bias the orbiting scroll against the fixed scroll, a fluid recirculation channel which extends from the space to the inlet through either the fixed scroll or the orbiting scroll, and a fluid recirculation valve disposed in the fluid recirculation channel. The fluid recirculation valve is configured to permit flow of fluid from the space to the inlet through the fluid recirculation channel or to block flow of fluid through the fluid recirculation channel. The fluid recirculation valve is configured to switch from a closed state to an open state when a pressure differential across the fluid recirculation valve is equal to or exceeds a certain threshold value.

The embodiments of the present disclosure disclose a scroll type micro-compressor, and a method for machining a fixed scroll plate and an orbit scroll plate thereof. The scroll type micro-compressor comprises a fixed scroll plate and an orbit scroll plate each integrally made with a monocrystalline silicon substrate; the compressor device has an Oldham ring structure, and reduces a mass of the orbit scroll plate by optimizing a design of a substrate of the orbit scroll plate; a cross-sectional shape of a plurality of micropores provided on a lower surface of the fixed scroll plate is set as of a fan ring, in which an electrode material is accommodated to maintain an electric field uniformity and reduce an electric field loss; and hydrophilia of inner surfaces is changed to prevent a top leakage and facilitate capillary filling of a compression chamber.

A compressor comprises a housing including a first opening to form a receiving space and a retaining wall, wherein the receiving space is divided, by the retaining wall, a low-pressure chamber and a controller chamber. A compressing mechanism further comprises a fixed scroll plate including a low-pressure side of scroll wraps and a high-pressure side, opposite to the scroll wraps; an orbiting scroll plate, located in the receiving space, including a side, facing the scroll wraps of the fixed scroll plate, of scroll wraps and a compression chamber is formed by the scroll wraps of the fixed scroll plate and the scroll wraps of the orbiting scroll plate; an electrical machinery mechanism, located in the low-pressure chamber, including a rotor and a stator, wherein the electrical machinery mechanism drives the compressing mechanism to rotates to compress refrigerant in the compression chamber.

A compressor is provided and may include a shell, a main bearing housing disposed within the shell, a driveshaft, a non-orbiting scroll member, and an orbiting scroll member. The driveshaft may be supported by the main bearing housing. The non-orbiting scroll member may be coupled to the main bearing housing and may include a first lubricant supply path in fluid communication with a lubricant source. The orbiting scroll member may be rotatably coupled to the driveshaft and may be meshingly engaged with the non-orbiting scroll member. The orbiting scroll member may include a recess that is moved between a first position in fluid communication with the first lubricant supply path and a second position fluidly isolated from the first lubricant supply path.

A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.

A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.

A scroll compressor according to the present disclosure and an air conditioner having the scroll compressor may include a drive motor provided in an inner space of a casing; a rotation shaft coupled to the drive motor; a frame provided on a lower side of the drive motor; a first scroll provided on a lower side of the frame, one side of which is formed with a first wrap; a second scroll in which a second wrap engaged with the first wrap is formed, and the rotation shaft is eccentrically coupled to the second wrap to overlap therewith in a radial direction, a compression chamber is formed between the first scroll and the second scroll while being orbitally moved with respect to the first scroll, and the compression chamber is connected to an evaporator outlet side of the cooling cycle; and an injection unit one end of which is branched from a refrigerant pipe between the condenser and the evaporator, and the other end of which is connected to the compression chamber through the first scroll.

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.

Provided are an air injection enthalpy-increasing scroll compressor, and a refrigeration system comprising the air injection enthalpy-increasing scroll compressor. The air injection enthalpy-increasing scroll compressor comprises a compressor housing, a main frame (13), a movable scroll plate (12) and a stationary scroll plate (11). The movable scroll plate (12) is arranged on the main frame (13). The movable scroll plate (12) comprises a movable plate end plate (121) and a movable scroll tooth (122) arranged on a side end face, away from the main frame (13), of the movable plate end plate (121), with a back pressure chamber being defined between the movable plate end plate (121) and the main frame (13). The stationary scroll plate (11) is arranged on one side, away from the main frame (13), of the movable scroll plate (12). The stationary scroll plate (11) comprises a fixed scroll end plate (111) and a stationary scroll tooth (112) arranged on a side end face, adjacent to the main frame (13), of the fixed scroll end plate (111). The stationary scroll tooth (112) and the movable scroll tooth (122) are engaged with each other to form a crescent-shaped compression cavity. At least one of the movable scroll plate (12) and the stationary scroll plate (11) is provided with medium pressure passages (30, 40), and during the rotation of the movable scroll plate (12), the medium pressure passages (30, 40) are suitable for communicating the compression cavity with the back pressure chamber. The air injection enthalpy-increasing scroll compressor can inhibit the overturning of the moving scroll plate (12) during operation, thereby improving the performance of the air injection enthalpy-increasing scroll compressor.

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume.