A porthole gasket is configured to seal a circumferential region around two overlapping portholes in two adjacent heat exchanger plates of a plate heat exchanger, so as to define a passage for a fluid into or out of the plate heat exchanger. The porthole gasket has a ring-shaped portion to be compressed between the two adjacent heat exchanger plates while surrounding the overlapping portholes. The porthole gasket further comprises a plurality of projections that protrude from an outer perimeter of the ring-shaped portion and are configured to be compressed between the two adjacent heat exchanger plates so as to support the ring-shaped portion against pressure exerted by the fluid. A plate package for a plate heat exchanger is configured to include the two adjacent heat exchanger plates and the porthole gasket.

A device and a method for assessing a gasket pressure of a gasket arrangement between two adjacent heat transfer plates of a plate heat exchanger is provided. The gasket arrangement seals between adjacent heat transfer plates to define a flow channel between adjacent heat transfer plates, and the gasket arrangement is arranged to be exposed to a fluid passing through the flow channel. The device comprises a test object and a holder which are adapted to be arranged in a flow path of the fluid. The holder is arranged to hold the test object and the test object is arranged to be exposed to the fluid. The device is adapted to be arranged outside a space delimited by the adjacent heat transfer plates. The test object is arranged to be evaluated for an indirect assessment of the gasket pressure of the gasket arrangement.

The plate heat exchanger and method for manufacturing a plate heat exchanger comprise a stack of heat transfer plates, with first and second flow channels arranged between the plates. Pairs of heat transfer plates form cells. A cell comprises inner spacing elements arranged between the heat transfer plates leaving open a first inlet opening and a first outlet opening for the one of the fluids. The cell also comprises outer spacing elements welded to the heat transfer plates on the sides of the heat transfer plates facing away from each other. The cells are stacked against each other and joined together by welding via the outer spacing elements. The plate heat exchanger further comprises cover plates for covering sides of the stack of heat transfer plates with interruption for an inlet port section formed by the first inlet openings and an outlet port section formed by the first outlet openings. The two first sides of the cell comprising the first inlet opening or the first outlet opening comprise leakage passageways provided between the heat transfer plates for the one of the fluids, in addition to the passages provided by the first inlet opening and the first outlet opening.

The present invention relates to a heat exchanger for a motor vehicle provided on the front surface of an engine room of the vehicle, and, more particularly, to a heat exchanger for a motor vehicle including a sealing member provided on the circumference of the heat exchanger in order to prevent driving-induced wind from leaking to the outside of the heat exchanger without passing through the heat exchanger.

A battery pack prevents an inflow of a leaking coolant. The battery pack includes a housing, in which at least one battery cell or battery module is mounted, a heat exchanger provided in the housing for cooling the battery cell or the battery module, and seal provided between the heat exchanger and the inner surface of the housing for preventing coolant leaking from the heat exchanger from flowing into a space in which the battery cell or the battery module is placed, whereby the stability and reliability of the battery pack are improved.

The present invention relates to a dual media safety heat exchanger comprising a first medium chamber configured to allow a first medium flow through the first medium chamber, a second medium chamber configured to allow a second medium flow through the second medium chamber and an intermediate chamber arranged between the first medium chamber and the second medium chamber and being configured to separate the first medium chamber from the second medium chamber so that the first medium is prevented from being mixed with the second medium or vice versa in the circumstance of a leak within the safety heat exchanger. The first medium chamber, the second medium chamber and the intermediate chamber are arranged in a stacked manner, the first medium chamber having a first inlet and a first outlet, the second medium chamber having a second inlet and a second outlet, the first medium chamber, the second medium chamber and the intermediate chamber being defined by a plurality of chamber plates having a configuration, wherein the configuration of each chamber plate is substantially identical irrespective of which chamber it is part of. The invention also relates to a method for preparing a dual media safety heat exchanger.

Technologies described herein are directed to isolating or insulating at least portions of an evaporator coil within a climate control unit (CCU) of a TCCS so as to reduce or even eliminate adverse effects caused by a leaked working fluid. Such adverse effects may include a threat of ignition, asphyxiation of occupants, damage to cargo, and other harmful effects caused by emission of a noxious gas. A leak isolation structure is provided to isolate evaporator tubes of an evaporator coil from at least one of a plurality of turns of the evaporator coil.

An air thermal conditioning system for at least one of heating air and cooling air. The air thermal conditioning system comprises one or more heat exchanger units that include at least one fluid chamber defined by first and second multilayer sheets. The first and second multilayer sheets each comprise an inner layer defining the at least one fluid chamber; a middle layer; and an outer layer that defines external opposing faces of the heat exchanger unit, the middle layer disposed between the inner layer and outer layer.

Leakage of a heating medium from a condenser or an evaporator can be quickly detected by a simple structure. A refrigeration apparatus 1 according to the present invention is formed by connecting a compressor 11, a condenser 12, an expansion valve 13 and an evaporator 14 by a pipe 15 such that a heating medium circulates therethrough in this order. The refrigeration apparatus 1 further includes a pressure detection unit 31, 32 that detects a pressure of the heating medium flowing through the pipe 15, and a control unit 41 that determines that leakage of the heating medium from the condenser 12 or the evaporator 14 has occurred, when a pressure detected by the pressure detection unit 31, 32 becomes not more than a predetermined value.

A cooling system includes a first cooling loop, a second cooling loop and a heat exchanger configured to transfer heat from the first cooling loop to the second cooling loop. The first cooling loop includes a vapor/liquid separation feature configured to separate vapor present in the first cooling loop due to a leak between the first cooling loop and the second cooling loop. The first cooling loop also includes a pressure sensor configured to detect an increase in pressure in the first cooling loop that may result from a leak of second coolant into the first cooling loop.