Plate heat exchanger
a heat exchanger and plate technology, applied in the direction of reinforced means, lighting and heating apparatus, laminated elements, etc., to achieve the effect of improving the capacity to handle temperature variations and improving the durability of the central-port plate heat exchanger
Inactive Publication Date: 2019-05-23
ALFA LAVAL CORP AB +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention improves the durability of a specific type of heat exchanger, making it better able to handle changes in temperature that cause parts of the exchanger to expand and contract.
Problems solved by technology
Still, the central-port plate heat exchanger is compact, it has good heat transfer properties and may withstand hard operation conditions without breaking.
Method used
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Embodiment Construction
[0030]With reference to FIGS. 1 and 2 a central-port plate heat exchanger 1 is illustrated. The heat exchanger 1 has a casing 2 that comprises a cylindrical shell 3, a top cover 4 and a bottom cover 5. The top cover 4 has the shape of a circular disc and a periphery of the top cover 4 is attached to an upper edge of the cylindrical shell 3. The bottom cover 5 has the shape a circular disc and a periphery of the bottom cover 5 is attached to a lower edge of the cylindrical shell 3. The covers 4, 5 are in the illustrated embodiment welded to the cylindrical shell 3. In another embodiment the covers 4, 5 are attached to the cylindrical shell 3 via bolts that engage flanges (not shown) of the cylindrical shell 3 and the covers 4, 5. A number of heat transfer plates 21, 22, 23 that are permanently joined to each other form a plate stack 20 that is arranged within in an enclosure 14 within the casing 2. The stack 20 has, in between the heat transfer plates 21, 22, 23, alternating first an...
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A plate heat exchanger comprising a casing, a fluid separation device, a number of heat transfer plates that are permanently joined to each other and have central openings that form a central space in the plate stack and in which the fluid separation device is arranged, such that a first part of the central opening may act as a fluid inlet and a second part of the central opening may act as a fluid outlet for a first fluid, opposite sides of the plates act fluid entries and exits for a second fluid, wherein two end plates have central through holes the ends of the plate stack, each of the end plates being thicker than the heat transfer plates, providing increased mechanical support for the plate stack, and having a slower thermal expansion.
Description
TECHNICAL FIELD[0001]The invention relates to a heat transfer plate of a type that has a central opening for receiving a fluid separation device that allows a first part of the central opening to act as a fluid inlet and a second part of the central opening to act as a fluid outlet.BACKGROUND ART[0002]Today many different types of plate heat exchangers exist and are employed in various applications depending on their type. Some types of plate heat exchangers are assembled from a casing that forms a sealed enclosure in which heat transfer plates that are joined are arranged. The heat transfer plates form a stack of heat transfer plates where alternating first and second flow paths for a first and a second fluid are formed in between the heat transfer plates.[0003]For one type of plate heat exchangers, the so called central-port plate heat exchanger, each heat transfer plate has a central opening (central port) for the first fluid path. Fluid in the first fluid path enters a heat tran...
Claims
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IPC IPC(8): F28D9/00F28F3/08F28F9/007
CPCF28D9/0012F28F3/08F28F9/0075F28F2265/26F28F2225/04F28F2230/00F28F2265/06F28F27/00
InventorLARSSON, HAKANRONDET, FREDERICJOLLEY, ADRIAN
OwnerALFA LAVAL CORP AB