Device for controlling a flow-through and distributing a fluid in at least one fluid circuit, in particular a refrigerant in a refrigerant circuit including a housing with ports for connecting with fluid lines, each of which is connected via a passage opening with the at least one interior volume of the housing, as well as with at least one valve element disposed in the interior volume of the housing with a drive element for moving the valve element relative to the housing. The at least one valve element is supported rotatably about a rotational axis and comprises at least three through openings developed as through-bores forming in the interior of the valve element a common volume. An axis of symmetry of a first opening and the rotational axis of the valve element are located on a common axis. The device is used in a refrigerant circuit of a thermal system.

An active balancing valve for a refrigeration and/or air-conditioning application having a valve housing with an inlet orifice, an outlet orifice and a mounting portion, a main valve element with a main pressure balance orifice and a control element at least partially defining a pressure balance passage. Each element is slidable inside the valve housing and comprises a control surface for controlling a fluid flow between the inlet orifice and the outlet orifice. The control element closes the main pressure balance orifice of the main valve element in a closed state of the valve.

A valve apparatus includes a valve main body, a shaft body, a first valve element, and a second valve element. The valve main body has a first depressed portion and a second depressed portion in a circular shape, and a first port, a second port, and a third port each communicating with the first depressed portion, and a fourth port and a fifth port each communicating with the second depressed portion. The first port is allowed to selectively communicate with one of the second port and the third port by closure of one of the second port and the third port by the first valve element rotating about an axial direction. A flow amount of a fluid flowing between the fourth port and the fifth port is allowed to be variable by closure of the fourth port by the second valve element rotating about the axial direction.

This disclosure discloses an expansion switch valve, including a valve body, where an inlet, an outlet, and an internal passage in communication between the inlet and the outlet are formed on the valve body, a first valve plug and a second valve plug are mounted on the internal passage, the first valve plug makes the inlet and the outlet in direct communication or out of communication, and the second valve plug makes the inlet and the outlet in communication through a throttle port or out of communication.

The invention relates to a thermal conditioning system including a refrigerant circuit having: a main loop including in succession: a compression device, a condenser configured to exchange heat with a first heat transfer fluid, a first expansion device, a first evaporator, a bypass branch including a second expansion device and a second evaporator. The second expansion device is a thermostatic expansion valve configured to vary a flow area for the refrigerant between a minimum flow area and a maximum flow area. The bypass branch includes a flow restriction device configured to limit a flow area for the refrigerant to a value less than the maximum flow area of the second expansion device.

A method of controlling fluid flow through a heating, ventilating, air conditioning, and refrigeration (HVAC-R) system includes measuring temperature and pressure at an outlet of an evaporator of the HVAC-R system, wherein the evaporator is in fluid communication with a compressor, a condenser, an expansion device between the evaporator and the condenser, and a flow control valve between the compressor and the condenser, and measuring a sub-cooling temperature at an outlet of the condenser. The measured evaporator temperature and pressure data is sent to a first superheat processor, and the measured sub-cooling temperature data is send to a second superheat processor. A control signal to the expansion device from the first superheat processor and a control signal to the flow control valve from the second superheat processor are then simultaneously sent.

A heating, ventilating, air conditioning, and refrigeration (HVAC-R) system includes an evaporator, a compressor, a condenser, an expansion device between the condenser and the evaporator, a superheat controller between the evaporator and the compressor, and a mass flow meter between the condenser and the expansion device. The superheat controller is configured to measure refrigerant fluid pressure and temperature and calculate superheat therefrom, to receive and analyze a mass flow rate of the refrigerant fluid traveling out of the condenser and measured by the mass flow meter, and further configured to provide a control signal to the expansion device.

A bidirectional throttle valve and an air conditioning system provided with same are provided. The bidirectional throttle valve includes a valve pipe, an inner wall of the first valve core cooperates with an inner wall of the first valve opening to form a first circulation channel. An inner wall of the second valve core cooperates with an inner wall of the second valve opening to form a second circulation channel. When the first valve opening and the second valve opening are in an opened state, a flow area of the first circulation channel is greater than a flow area of the second circulation channel. And the second valve core cooperates with the second valve opening to achieve throttling. The present disclosure further provides an air conditioning system, which includes the above bidirectional throttle valve.

A bidirectional throttle valve and an air conditioning system provided with same are provided. The bidirectional throttle valve includes a valve pipe, an inner wall of the first valve core cooperates with an inner wall of the first valve opening to form a first circulation channel. An inner wall of the second valve core cooperates with an inner wall of the second valve opening to form a second circulation channel. When the first valve opening and the second valve opening are in an opened state, a flow area of the first circulation channel is greater than a flow area of the second circulation channel. And the second valve core cooperates with the second valve opening to achieve throttling. The present disclosure further provides an air conditioning system, which includes the above bidirectional throttle valve.

An evaporator apparatus for a refrigeration cycle of an HVAC system or a refrigeration system is disclosed that includes: a primary evaporator pathway for a working fluid of the refrigeration cycle extending through a primary expansion device and a primary evaporator; a secondary evaporator pathway for the working fluid in parallel with the primary evaporator pathway and extending through a secondary expansion device and a secondary evaporator; a coolant circuit for cooling a device, the secondary evaporator configured for heat exchange between the working fluid and process fluid of the coolant circuit; and a controller configured to control: the primary expansion device to maintain a target superheat of working fluid at a primary control location downstream of the primary evaporator; and the secondary expansion device based on monitoring a temperature of process fluid to maintain a target temperature of process fluid at a coolant control location in the coolant circuit.