Efficiency condenser
US6237677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D2021/0084
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system refrigerant condenser (24) has opposed, parallel, vertical header tanks header tanks (12', 14') with a substantially uniform internal cross sectional area. The inlet tank (12') and return tank (14') are connected by a plurality of generally parallel flow tubes (16'), each of which is identical in size and shape with unrestricted ends opening into each header tank (12', 14'). The refrigerant inlet (20') into the inlet tank (12') is located relatively high up, as is the outlet (22') on the other tank, creating both a vapor deficit in the lower flow tubes (16') that are farthest from the inlet (20'), as well as liquid pooling in the lower flow tubes (16') that are below the outlet (22'). By placing a simple flow restriction (26) in the return tank (14') that restricts the flow, through the return tank (14'), of the refrigerant flowing from the higher, surplus flow tubes (16') and to the refrigerant outlet (22'), a back pressure is created in the return tank (14') that indirectly shifts fluid flow within the inlet tank (12'), away from the surplus flow tubes and toward the deficit flow tubes. This rebalances the refrigerant flow through all flow tubes (16') t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.