A heat pump heater for an air conditioning system of a motor vehicle may include a first tube row and a second tube row each including a plurality of flat tubes arranged spaced apart from one another. The first and second tube row may be arranged in parallel to form a tube block. At least some flat tubes of the first tube row may lead into an inlet pipe and at least some flat tubes of the second tube row may lead into an outlet pipe. A refrigerant may be flowable from the inlet pipe via the first tube row and to the outlet pipe via the second tube row. The inlet pipe and the outlet pipe may be fluidically connected to one another via at least one bypass duct such that a liquid phase of the refrigerant is flowable out of the inlet pipe into the outlet pipe.

The invention relates to a tube (1) for a heat exchange bundle (100) of a vehicle heat exchanger, said tube (1) comprising: two circulation plates (3) configured to be assembled together in a sealed manner and to form at least one conduit (31) in which a first heat transfer fluid circulates between said circulation plates (3), at least one reservoir plate (5) comprising cavities (51), said reservoir plate (5) being configured to be assembled in a sealed manner on a face of one of the two circulation plates (3) so as to close the cavities (51), the cavities (51) being projections on the face of the reservoir plate (5) such that a second heat transfer fluid can circulate between the cavities (51), the tube (1) further containing a phase change material stored in the housings formed by the cavities (51), the phase change material having a solidification temperature between 6 and 8 degrees Celsius.

A heat exchanger for a vehicle is disposed in a fluid circuit in which a fluid is circulated according to an operating condition of the vehicle. The heat exchanger includes a tank and a pressure adjuster. The tank defines a tank chamber therein and is configured to allow the fluid to flow through the tank chamber. The pressure adjuster is disposed inside the tank and defines a damper chamber separately from the tank chamber. The pressure adjuster is configured to be displaceable or deformable to expand and reduce the damper chamber. The damper chamber is filled with a compressible gas. The pressure adjuster is configured to reduce the damper chamber in response to an increase in a pressure of the fluid in the tank chamber. The pressure adjuster is configured to expand the damper chamber in response to a decrease in a pressure of the fluid in the tank chamber.

A heat pump heater for an air conditioning system of a motor vehicle may include a first tube row and a second tube row each including a plurality of flat tubes arranged spaced apart from one another. The first and second tube row may be arranged in parallel to form a tube block. At least some flat tubes of the first tube row may lead into an inlet pipe and at least some flat tubes of the second tube row may lead into an outlet pipe. A refrigerant may be flowable from the inlet pipe via the first tube row and to the outlet pipe via the second tube row. The inlet pipe and the outlet pipe may be fluidically connected to one another via at least one bypass duct such that a liquid phase of the refrigerant is flowable out of the inlet pipe into the outlet pipe.

The present invention relates to a tube (1) with a reservoir of phase-change material for a heat exchange bundle (100) of a heat exchanger, said tube (1) with a reservoir of phase-change material including: two flow plates (3) which are configured to be assembled with one another in a fluid-tight fashion and form at least one duct (31) in which a first heat-transfer fluid flows between said flow plates (3), at least one reservoir plate (5) including cavities (51), said reservoir plate (5) being configured so that it can be assembled in fluid-tight fashion on an external face of one of the two flow plates (3) so as to close the cavities (51) and form housings for the phase-change material, said cavities (51) projecting from the external face of the reservoir plate (5) so that that a second heat-transfer fluid can circulate between said cavities (51).

A heating or air conditioning system with a housing and with a heat exchanger located therein, wherein the housing constitutes an upper housing part and a lower housing part in which the heat exchanger is positioned, and the upper housing part forms, in the region where the heat exchanger is positioned, a housing wall that the heat exchanger is in direct contact with. The housing wall is designed to be elastic, at least in sections, such that the housing wall elastically yields in the contact region of the heat exchanger to compensate for dimensional tolerances of the heat exchanger.

A heat exchanger for heating a vehicle interior may include a heat exchanger block including a plurality of air ducts and a plurality of coolant ducts arranged according to a cross flow principle. The heat exchanger block may have a first heat exchanger stage including an air inlet side and a second heat exchanger stage including an air outlet side. The plurality of air ducts and the plurality of coolant ducts may extend through the heat exchanger block and may be coupled to one another in a heat-transferring and media-separated manner in both the first heat exchanger stage and the second heat exchanger stage. The heat exchanger may further include a plurality of thermoelectric modules, configured to operate as a heat pump to transfer heat from the coolant flow to the air flow, arranged between the plurality of air ducts and the plurality of coolant ducts.

A heater core includes a plurality of plate pairs. Each plate pair defines a respective fluid flow chamber. Each plate pair has a proximal plate defining a respective proximal plate plane and a distal plate defining a respective distal plate plane. Each of the proximal plate planes and the distal plate planes are parallel. Each plate pair has bilateral symmetry about a medial plane orthogonal to the proximal plate planes. A circular inlet aperture is defined in each respective proximal plate and each respective distal plate of the plurality of plate pairs. Each inlet aperture has a center on the medial plane. The inlet apertures are aligned on a common inlet aperture axis. A circular outlet aperture is defined in each respective proximal plate and each respective distal plate of the plurality of plate pairs. Each outlet aperture has a center on the medial plane.

Disclosed is a heat exchanger that has an internal air flow pattern such as a helical pattern. The heat exchanger includes a shell that encompasses an inner series of heat exchange tubes and an outer series of heat exchange tubes. A baffle sheet is juxtaposed next to the outer series of heat exchange tubes. And the baffle sheet is configured to direct air flow within the heat exchanger in a configuration, such as a helical configuration, from a center of the shell toward an outer region of the shell.

An air conditioning system having a compact configuration may include an evaporator and a heater core that have a cylindrical shape. The evaporator defines a cavity. The heater core is positioned within the cavity such that the evaporator and the heater core are coaxially positioned with each other about a center axis. The heater core is configured to rotate about the center axis to draw in air.