Abstract: A vapour compression system (1) includes an ejector (6) and a liquid separating device (10) arranged in a suction line. At least one evaporator (9) is allowed to be operated in a flooded state. A flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is detected, and it is determined whether or not the flow rate is sufficient to remove liquid refrigerant produced by the evaporator(s) (9) from the liquid separating device (10). In the case that it is determined that the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is insufficient to remove liquid refrigerant produced by the evaporator(s) (9), the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is increased, and/or a flow rate of liquid refrigerant from the evaporator(s) (9) to the liquid separating device (10) is decreased.

Abstract: According to the present disclosure, a controller includes a base and a continuous sealing layer connected to the base forming an environmentally sealed compartment between the base and a lower surface of the continuous sealing layer. A circuit board is positioned within the compartment, and a rotary knob encoder is positioned on an upper surface of the continuous sealing layer. Movement of the rotary knob encoder is detectable by the circuit board through the continuous sealing layer.

Abstract: Pressure relief valve (1) comprising a valve housing (2), in which a double-side operable cylindrical pressure relief valve spool (3) is housed slidable along a longitudinal axis (4) of a cylindrical bore (5) in the valve housing (2). The pressure relief valve spool (3) can be shifted into a first position by a first force acting on an actuating side (6) of the pressure relief valve spool (3) and can be shifted into a second position by a pressure force acting on a sealing side (7) of the pressure relief valve spool (3). On the sealing side (7) of the pressure relief valve spool (3) a double-sealing, rotational symmetric poppet (30) is located having a rotational axis (34), a first convex sealing surface (31) and a second convex sealing surface (32). The first sealing surface (31) facing away from the pressure relief valve spool (3) is provided for sealing with an external valve seat (11).

Abstract: A pumping system for an aquatic application includes a motor to be coupled to a pump and a controller in communication with the motor. The controller is configured to determine a speed of the motor, determine a current performance value of the pumping system, compare the current performance value to a referenced performance value, determine an adjustment value based upon the comparison of the reference and current performance values, and adjust a speed of the motor based on the adjustment value.

Abstract: A heat exchanger (1, 2, 10, 20) of a heat exchange device, a heat exchange module (100), a heat exchange device (65, 75, 115) and a heat source unit used for an air-cooling cold-water unit or a commercial roof machine.

Abstract: A pump arrangement (1) is provided comprising a driving shaft (2), cylinder drum means (3a, 3b) fixed to said shaft (2) in rotational direction and having a plurality of cylinders (6a, 6b), and a piston (7a, 7b) in each cylinder, each piston (7a, 7b) having a slide shoe (8a, 8b) in contact with driving surface means (8a, 8b). Such a pump arrangement should produce a pressure with low undulations. To this end said cylinder drum means (3a. 3b) comprise at least a first cylinder drum (3a) and a second cylinder drum (3b), said cylinder drums (3a, 3b) being fixed to said common shaft (2) in rotational direction, wherein the cylinder drums (3a, 3b) are offset with respect to each other in rotational direction.

Abstract: A compressor and a method of assembling the compressor are provided. The compressor includes: a shell; a motor arranged in the shell, the motor having a stator, a spacer mounted with a first bearing therein, a drive shaft supported by the first bearing and a rotor fixed onto the drive shaft; a low bearing support; a positioning member positioning the second bearing and being connected to the low bearing support; and a second bearing connected to the positioning member and/or the low bearing support and supporting the drive shaft. Furthermore, the positioning member may be removed from or maintained in the compressor after it is assembled. The present disclosure can avoid the adverse effects of the gravity of the rotor and the drive shaft and/or the magnetic force between the rotor and the stator on positioning the bearings and the drive shaft and can improve positioning accuracy and assembling efficiency.

Abstract: The invention relates to a method and to an arrangement for adjusting the magnetization of a permanent magnet machine, i.e. the magnetic flux induced by permanent magnets of a rotor in a stator, i.e. the air gap flux. According to the invention, the air gap flux is adjusted by adjusting the leakage flux of the permanent magnet.

Abstract: The invention relations to a hydraulic machine of the Dry-Case construction type comprising a hydraulic machine housing for receiving a hydrostatic driving mechanism for conveying hydraulic fluid with a driving shaft operational connected with the driving mechanism. The driving shaft is mounted rotatable about its longitudinal axis in the hydraulic machine housing. Neither the driving mechanism, nor the driving shaft nor its bearings splash or move in a sump of the hydraulic fluid. Lubricant can be pumped to bearings of the driving shaft and to the driving mechanism by a lubrication pump arranged on the driving shaft and being driven by driving shaft. The lubrication pump do not splash in a sump of the hydraulic fluid either and comprise a suction port which leads to a hydraulic fluid reservoir.

Abstract: A valve arrangement according to the present disclosure includes a valve module and a drain valve. The valve module includes first and second functional spaces, and an attachment interface defining a passage into one of the first or second functional spaces. The drain valve includes a fluid inlet and a fluid outlet formed through a common connector part that is connectable to the attachment interface to connect the fluid inlet of the drain valve to the second functional space and the at least one fluid outlet to the first functional space.

Abstract: A system is disclosed for configuring a motor controller using a one-click configuration scheme, simplifying the process of motor configuration in drives and similar devices. The system includes a specify component, a display component, and a single-action identification and configuration component. The specify component specifies a motor in communication with the motor controller. The display component displays information on the status of the motor controller. The single-action identification and configuration component, in response to performance of only a single action (i.e., a single-click or equivalent starting signal), performs an identification and configuration sequence for the motor comprising at least three identification steps to establish a single parameter for driving the motor. The at least three identification steps can include measurements of system parameters, noise, and resonance. The recommend bandwidth for motor operation can be selected from within a range of permissible bandwidths.

Abstract: In accordance with one aspect, the present disclosure provides for systems and methods for controlling a pumping system for at least one aquatic application. The pumping system can include a pump, a motor coupled to the pump, an interface associated with the pump designed to receive input instructions from a user, and a controller in communication with the motor. The controller determines a blockage condition based on a power consumption value of the motor, and can further include an auto-restart function that is designed to allow the pump to automatically restart after detection of the blockage.

Abstract: Sintering device for sintering at least one electronic assembly, having a lower die and an upper die which is slidable towards the lower die, or a lower die which is slidable towards the upper die. The lower die forms a support for the assembly to be sintered and the upper die includes a receptacle for a pressure pad for exerting pressure directed towards the lower die, and a delimitation wall which laterally surrounds the pressure pad. The delimitation wall having an outer delimitation wall and an inner delimitation wall surrounded by the outer delimitation wall, the inner delimitation wall mounted so as to be slidable towards the outer delimitation wall and so as to be slid in the direction of the lower die such that, following the placing of the inner delimitation wall on the lower die, the pressure pad is displaceable in the direction of the lower die.

Abstract: An Oldham coupling includes an annular ring having a first side and a second side opposite to the first side, a first and a second engaging groove that are diametrically opposed and located on the first side, and a third and a fourth engaging groove that are diametrically opposed and located on the second side. The first and second engaging grooves are configured to be engaged with a first and a second engaging projection provided on a fixed element. The third and fourth engaging grooves are configured to be engaged with a third and a fourth engaging projection provided on an orbiting scroll. The first and third engaging grooves are located in a first angular sector, and the second and fourth engaging grooves are located in a second diametrically opposed angular sector of the annular ring, the first and second angular sectors have an opening angle less than 40°.

Abstract: The invention relates to a plate heat exchanger (9) with a plurality of heat exchanger plates (1, 13), each comprising at least one section showing indentations (2, 3, 14, 15), intended to be placed against corresponding indentations (2, 3, 14, 15) of a heat exchanger plate (1, 13) of a corresponding design. The heat exchanger (9) has a first type of indentations (2, 14) and a second type of indentations (3, 15), wherein the number of said first type of indentations (2, 14) and said second type of indentations (3, 15) are differing.

Abstract: A method and apparatus for catching a rotating motor is described. Switches (typically the lower switches) of an inverter of a motor drive circuit are short-circuited for a brief period of time. The pulses generated by this process are analyzed to determine the speed and direction of rotation of the motor. The pulses are checked to determine whether they are orthogonal. If they are, the motor velocity determination is deemed to be reliable and then motor is magnetized and normal motor control can be resumed. If not, the motor velocity determination is deemed to be unreliable and a magnetization pulse before the velocity determination step is repeated.

Abstract: The invention relates to a pilot valve arrangement (1) comprising a pilot valve device (2) which comprises a pilot valve element (13), a pilot valve seat (14) cooperating with the pilot valve element (13) and a presetting mechanism for presetting an opening pressure of the pilot valve element (13), the pilot valve arrangement (1) further comprising a presetting mechanism actuating device (3) which comprises an actuator element (17) adapted to create an actuating force in order to actuate the presetting mechanism in the pilot valve device so as to preset the opening pressure. According to the invention, the pilot valve arrangement (1) comprises a contactless force coupling arrangement adapted to transfer the actuating force from the presetting mechanism actuating device (3) to the pilot valve device (2). An inventive pilot valve device (2) is disclosed and claimed as well. The invention allows to improve maintenance and safety concerning the devices mentioned above.

Abstract: A cover for a motor drive is provided. The cover includes an opening (often at the bottom of the cover) to allow air to pass to an air inlet of the motor drive and an opening (often near the top of the cover) to allow air from an air outlet of the motor drive to exit the cover. A hood provides rain protection for the drive and a separator (such as a baffle) within the enclosure prevents air flowing within the enclosure from the air outlet to the air inlet of the drive. The hood and/or the separator are shaped to direct air from the air outlet away from the enclosure in order to substantially reduce the re-circulation of air from the air outlet to the air inlet of the drive.

Abstract: The invention relates to an actuator for a valve in a refrigeration system. The invention also relates to a valve with such actuator, and to a refrigeration system with such valve. The actuator comprises an elongated Shape Memory Alloy (SMA) element extending along two or more string-like extensions from a distant end to a proximate end in relation to a valve element of a valve. The SMA element, when forming part of the valve, may extend from the distant end to the proximate end connected to a housing of the SMA element, however, electrically insulated from the housing. An encapsulation may provide a thermal resistance, a thermal conductor and/or an electrical resistance between the SMA element and other elements or the surroundings of the SMA element.

Abstract: A scroll compressor includes a scroll compression unit having a fixed scroll and an orbiting scroll a drive shaft configured to drive the orbiting scroll in an orbital movement, and a support frame including a bearing configured to guide in rotation a guided portion of the drive shaft. The scroll compressor also includes an anti-rotation device including a pair of first engaging elements slidably engaged with a pair of complementary engaging elements on the support frame; and a lubrication system to lubricate at least partially the first engaging elements. The lubrication system includes a lubrication channel and hole on the drive shaft; the hole is fluidly connected to the channel and emerges in an outer wall of the guided portion. The system further includes an oil lubrication passage on the support frame, which includes an oil inlet aperture emerging in a receiving chamber, and an oil outlet aperture configured to supply with oil at least one of the first engaging elements.