Plate heat exchanger
US5778975A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Feb 21, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D9/005
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention refers to a plate heat exchanger (1) for heat transfer between two fluids, comprising several permanently joined modules (2), each consisting of two outer heat transfer plates (3) and between these several principally rectangular inner heat transfer plates (4), which have openings (10) for respective fluids in their corner portions, which form flow passages through the plate heat exchanger (1), said outer heat transfer plates (3) showing smaller openings (10) for at least one of the fluids than said inner heat transfer plates (4) and said modules (2) being joined with each other around said openings (10) in respective outer heat transfer plates (3). In the present invention at least one of the fluids is arranged to flow through the plate heat exchanger (1) in several passes, and at least a disc of a pass (13) is introduced in at least one flow passage and is arranged towards two outer heat transfer plates (3) joined with each other to essentially seal said opening (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.