Abstract: A plate apparatus suitable for heat and/or material exchange has plates (P0, P1, P2, P3) contacting each other flush along a peripheral seal (1) while forming respective intermediate spaces (Z0, Z1, Z2, Z3) and having upper (2, 3) and lower (4, 5) through-flow openings for fluids. A group of these upper and lower through-flow openings (2, 5) is allocated to at least two fluids and is connected by correspondingly placed seals to every second plate intermediate space (Z1, Z3) carrying a flow from top to bottom. In flush upper through-flow openings (2) of plates (P0, P1, P2, P3) a distribution lance (6) runs across these openings and has outlet openings (6a) for at least one of the fluids. It is essential that the outlet openings (6a) are directed into those plate intermediate spaces (Z0, Z2) arranged between the second plate intermediate spaces (Z1, Z3) for the fluids to be mixed.

Abstract: Plate heat exchanger consisting of a plate stack (2) and a housing (1) surrounding the plate stack, wherein the plates (2a) are connected with one another in the plate stack (2) in such a manner that a first and at least one further medium can flow alternately through adjacent plate interstices, and the one medium can be conducted to and away from the plate stack (2) by way of through-flow channels that run in the stack direction, while the other medium can be conducted to and away from the plate interstices assigned to it by way of an interstice between housing (1) and plate stack (2) on the outer circumference. It is essential, in this connection, that the following combination of materials is present: The plates (2a) of the plate stack (2) consist, in known manner, of corrosion-resistant material, whereas the housing (1) consists of a non-corrosion-resistant material that has an enamel coating on its inner side, which is impacted by medium.

Abstract: A heat exchanger plate (3a) for a plate-type heat exchanger having throughflow openings (4-7), which are arranged adjacent to one another in the plane of the plate, for fluid media is provided. The heat exchanger plate (3a) is formed from a first material, in particular steel or high-grade steel, and those surfaces (18a, 19a, 20a) of the heat exchanger plate (3a) which come into contact with one of the fluid media are formed from, or lined, with another material which is in particular more corrosion resistant than the first material.

Abstract: A heat exchanger plate (3a) for a plate-type heat exchanger having throughflow openings (4-7), which are arranged adjacent to one another in the plane of the plate, for fluid media is provided. The heat exchanger plate (3a) is formed from a first material, in particular steel or high-grade steel, and those surfaces (18a, 19a, 20a) of the heat exchanger plate (3a) which come into contact with one of the fluid media are formed from, or lined, with another material which is in particular more corrosion resistant than the first material.

Abstract: A heat transfer plate is provided for a plate heat exchanger, the plate having a heat transfer area and peripheral openings for the heat transfer media, namely a product to be at least partially evaporated or condensed on the one hand and a heating or cooling medium on the other hand. A first group of the openings is allocated to one medium and to one side of the plate, and a second group of the openings is allocated to the other medium and the other side of the plate by appropriately placed seals. The group of openings allocated to the product to be evaporated comprises a plurality of adjacent inlet openings on the inlet side of the plate, the inlet openings ending directly in the heat transfer area of the plate at approximately a right angle to the adjacent plate edge.

Abstract: A heat transfer plate is provided for a plate heat exchanger, the plate having a heat transfer area and peripheral openings for the heat transfer media, namely a product to be at least partially evaporated or condensed on the one hand and a heating or cooling medium on the other hand. A first group of the openings is allocated to one medium and to one side of the plate, and a second group of the openings is allocated to the other medium and the other side of the plate by appropriately placed seals. The group of openings allocated to the product to be evaporated comprises a plurality of adjacent inlet openings on the inlet side of the plate, the inlet openings ending directly in the heat transfer area of the plate at approximately a right angle to the adjacent plate edge.