Economized refrigerant vapor compression system for water heating
US8079229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2005 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/0261
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An economized refrigerant vapor compression system (10) for water heating includes a refrigerant compression device (20), a refrigerant-to-water heat exchanger (30), an economizer heat exchanger (60), an evaporator (40) and a refrigerant circuit (70) providing a first flow path (OA, 70B, 70C, 70D) connecting the compression device (20), the refrigerant-to-liquid heat exchanger (30), the economizer heat exchanger (60) and the evaporator (40) in refrigerant circulation flow communication and a second flow path (70E) connecting the first flow path (62) through the economizer heat exchanger (60) to the compression device (20). The economizer heat exchanger (60) has a first pass (62) for receiving a first portion of the refrigerant having traversed the refrigerant-to-liquid heat exchanger and a second pass (64) for receiving a second portion of the refrigerant having traversed the refrigerant-to-liquid heat exchanger. The refrigerant system (10) has a bypass unloading branch (70F) with a c pass flow control device (92) connecting economizer (70E) and suction (OD) refrigerant lines for providing additional capacity adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.