Abstract: A refrigeration plant with refrigerant evaporator arrangement and process for parallel air and battery contact cooling. The refrigeration plant includes a refrigerant evaporator arrangement for parallel air and battery contact cooling, having with a refrigerant compressor and a condenser An evaporator with an assigned controllable expansion member for air cooling and an evaporator as a battery contact cooler with an assigned controllable expansion member for battery cooling are provided. A throttling member is located between the evaporator and the tap of the assigned controllable expansion member.

Abstract: The disclosure relates to a cooling system and a method for operating the cooling system for cooling a battery of a vehicle using a coolant circuit. The cooling circuit includes a pump device, a heat exchanger for transferring heat between a coolant and the battery, a heat exchanger for transferring heat between the coolant and the surroundings, and a heat exchanger for transferring heat between the coolant and a refrigerant circulating in a refrigerant circuit. The refrigerant circuit is designed with a heat exchanger and an associated expansion element. The refrigerant circuit includes two additional expansion elements. The first expansion element is arranged upstream of the heat exchanger and the second expansion element is arranged downstream of the heat exchanger, with regard to the direction of the refrigerant flow. The heat exchangers designed as evaporators on the refrigerant side can be operated with different pressure and temperature levels.

Abstract: The invention relates to a refrigerant circuit and a process for operation of the refrigerant circuit of an HVAC system of a vehicle, particularly an electric or hybrid vehicle. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transmission between the refrigerant and the environment, a collector, a first expansion member, a heat exchanger for supply of heat from the fresh air to be conditioned of the vehicle interior to the refrigerant and a heat exchanger arranged switched in parallel to the heat exchanger. Further, the refrigerant circuit is provided with a secondary train that extends starting from a tapping point positioned between the compressor and the heat exchanger up to a connection point and is provided with a heat exchanger for heat transmission from the refrigerant to the fresh air to be conditioned for the vehicle interior, and a subsequent control valve.

Abstract: An air conditioning unit is disclosed for motor vehicles. The air conditioning unit includes with a compression refrigerant circuit where a refrigerant circulates, comprising comprehensively switched in series with respect to fluid flow at least one compressor upstream of a heat-delivering heat exchanger, and an expansion element upstream of a heat-absorbing heat exchanger, whereby into the flow path leading from the outlet of the heat-delivering heat exchanger to the expansion element an additional heat exchanger is integrated thermally coupled to at least one cooling means the temperature of which can be put to values below the temperature of the refrigerant in the compression refrigeration circuit at the position of the refrigerant's outflow from the heat-delivering heat exchanger, and a method for its operation.

Abstract: A method for operating an HVAC system includes the steps of adjusting a heating temperature of a heat exchanger disposed in a first flow passage, directing a first partial air mass flow through the first flow passage, directing a second partial air mass flow through a second flow passage, and directing the first partial air mass flow and the second partial air mass flow downstream of the first flow passage and the second flow passage, wherein the heating temperature of the heat exchanger required to at least one of achieve and maintain a desired climate in the passenger compartment of the vehicle is set as a maximum heating temperature for the heat exchanger, and wherein only an amount of energy required to at least one of achieve and maintain a desired climate in the passenger compartment of the vehicle is added to the HVAC system.

Abstract: The invention relates to a compact vehicle HVAC system including an evaporator unit, a condenser unit, and a component unit, as well as a refrigerant circuit. The evaporator unit and the condenser unit each are provided with air-passed heat exchangers and a fan in a casing. Further circuit components are displaced within the component unit. The casings of the evaporator unit, the condenser unit, and the component unit advantageously establish a connected compact casing arrangement. The heat exchangers are displaced within the compact casing arrangement. The refrigerant circuit is established for a combined refrigeration plant and heat pump operation as well as an afterheating operation, whereby in the afterheating operational mode the heating power of the afterheater established as condenser/gas cooler and the cooling power of the evaporator are controllable independently of each other.

Abstract: A battery unit for hybrid or electric vehicles comprising a cell module including a plurality of storage cells, each accommodated in a prismatic cell casing with two large surfaces arranged parallel to each other and four narrow side surfaces. The prismatic cell casings with their parallel arranged large surfaces are stacked adjacent to each other. One of the narrow side surfaces, the cell casing bottom of each storage cell. A cooling device comprising a plate-shaped cooling body with one or several recesses, and one or several fastening mechanisms integrated into the cell module bottom that agree with a corresponding number of recesses of the cooling body, are configured to couple the cooling body to the cell module.

Abstract: The invention relates to a heat exchanger for temperature controlling and fastening of battery units of the battery of a vehicle. The heat exchanger includes flat tubes that are passable by a heat carrier and a collecting tube and distributing tube for conducting the heat carrier. The flat tubes are established as multi-channel flat tubes. The collecting tube and the distributing tube are connected to each other over the flat tubes so that a holding frame is established that provides a structure forming spaces. The spaces are provided as chambers for accommodating the battery units.

Abstract: The invention relates to a refrigerant accumulator for a motor vehicle air conditioning unit with a collector chamber and a neighboring flow chamber wherein the region of the accumulated refrigerant oil, the collector chamber includes a valve, which is established such that at a pressure difference between the collector chamber and the flow chamber higher than the hydrostatic pressure of the liquid column in the collector chamber refrigerant flows from the collector chamber over the valve into the flow chamber.

Abstract: An air conditioning unit is disclosed for motor vehicles. The air conditioning unit includes with a compression refrigerant circuit where a refrigerant circulates, comprising comprehensively switched in series with respect to fluid flow at least one compressor upstream of a heat-delivering heat exchanger, and an expansion element upstream of a heat-absorbing heat exchanger, whereby into the flow path leading from the outlet of the heat-delivering heat exchanger to the expansion element an additional heat exchanger is integrated thermally coupled to at least one cooling means the temperature of which can be put to values below the temperature of the refrigerant in the compression refrigeration circuit at the position of the refrigerant's outflow from the heat-delivering heat exchanger, and a method for its operation.

Abstract: An air conditioning unit for a combined refrigeration plant and heat pump mode of operation for vehicles is disclosed, wherein the air conditioning unit includes a primary circuit and a secondary passage, and a power consumption required by the air conditioning unit to heat the passenger compartment is minimized.

Abstract: The invention relates to an assembly for refrigerant circuits that is arranged between the compressor and the evaporator thereof including a housing with a through channel. Within the through channel is a microchannel part having a filtering portion and a decompression portion wherein filtering and decompression of the passing refrigerant can be performed generally at the same time.

Abstract: A refrigerant accumulator for refrigerant circuits having a container with an inlet for a two-phase mixture and an outlet for the refrigerant vapor. The accumulator includes a baffle provided as a separator in the upper part of the refrigerant accumulator. The baffle includes means for the collection of liquid refrigerant, by which the liquid refrigerant is leadable into the lower region of the refrigerant accumulator.

Abstract: The invention relates to an assembly for refrigerant circuits that is arranged between the compressor and the evaporator thereof including a housing with a through channel. Within the through channel is a microchannel part having a filtering portion and a decompression portion wherein filtering and decompression of the passing refrigerant can be performed generally at the same time.