Two-phase refrigerant distribution system for multiple pass evaporator coils
US7044200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Jul 30, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2250/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multiple pass, parallel tube heat exchanger with a collection header extending along the length of each of a first and second pass, is provided with a bypass tube which fluidly interconnects the downstream end of the collection header to a midpoint thereof, near the end of the first pass tubes and the beginning of the second pass tubes so as to enhance the flow distribution of two-phase refrigerant from the collection header to the second pass tubes. The distribution flow is further enhanced by the insertion of an eductor nozzle within the collection header, and with the inlet of the eductor nozzle being supplied by refrigerant flow from the condenser to thereby provide a motive flow of two-phase refrigerant in the loop which includes the latter half of the collection header and the bypass tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.