Patent
Absorption refrigerators
| العنوان: | Absorption refrigerators |
|---|---|
| Patent Number: | 5,673,566 |
| تاريخ النشر: | October 07, 1997 |
| Appl. No: | 08/500,941 |
| Application Filed: | September 05, 1995 |
| مستخلص: | This invention relates to a pump and refrigeration system including an evaporator from which refrigerant vapor is withdrawn by an absorber and absorbent is recharged by a generator. Further, a condenser is provided between the generator and the evaporator so that refrigerant vapor from the generator can be condensed prior to being returned to the evaporator. In addition, the system is provided with an ejector which is positioned downstream of the evaporator so as to withdraw refrigerant vapor from same and upstream of the condenser so that said withdrawn refrigerant vapor passes through the ejector to the condenser. Thus, in the system of the invention, both an absorber and ejector withdraw refrigerant vapor from the evaporator, thus enhancing the efficiency of the system and further refrigerant vapor passing through the ejector is delivered directly to a condenser, thus reducing the burden of the absorber. |
| Inventors: | Eames, Ian William (Sheffield, GB3); Aphornratana, Satha (Sheffield, GB3) |
| Assignees: | The University of Sheffield (GB3) |
| Claim: | We claim |
| Claim: | 1. A heat pump and refrigeration system comprising |
| Claim: | a generator for producing heat to power the system; |
| Claim: | a condenser for rejecting heat from the system; |
| Claim: | an evaporator for effecting heat exchange with an environment; an absorber for extracting refrigerant vapour from the evaporator; and |
| Claim: | an ejector for extracting refrigerant vapour from said evaporator, wherein all of the refrigerant in the system passes through said evaporator in each cycle and wherein said ejector is positioned downstream of said evaporator and upstream of said condenser so that refrigerant vapour extracted from said evaporator by said ejector passes through said ejector before being delivered to said condenser. |
| Claim: | 2. A system according to claim 1 wherein the ejector is further positioned downstream of the generator so that refrigerant vapour issuing from the generator passes through the ejector and so brings about entrainment of refrigerant vapour from the evaporator. |
| Claim: | 3. A system according to claim 1 wherein a circuit is created so that all refrigerant vapour passes through the evaporator and then a fraction of that vapour leaves the evaporator and passes to the ejector and the remaining fraction leaves the evaporator and passes to the absorber. |
| Claim: | 4. A system according to claim 1 wherein there is further provided a separator positioned between the generator and the absorber so that absorbent returning from the generator to the absorber passes through the separator and so releases refrigerant vapour. |
| Claim: | 5. A system according to claim 4 wherein said separator is in fluid connection with said condenser so that said refrigerant vapour yield by the absorbent passes from the separator to the condenser. |
| Claim: | 6. A system according to claim 1 wherein there is further provided an ejector-economiser which is positioned downstream of the ejector and which is provided with a feed-line which draws absorbent from the absorber to the economiser and then delivers the absorbent, after passage through the economiser, to the generator. |
| Claim: | 7. A system according to claim 6 wherein the feed-line is provided downstream of the absorber so that absorbent leaving the absorber on its way to the generator is in part diverted so as to pass through the economiser. |
| Current U.S. Class: | 62/107; 62/476 |
| Current International Class: | F25B 1500 |
| Patent References Cited: | 1615353 January 1927 Altenkirch 1934690 November 1933 Babcock 2014701 September 1935 Seligmann 2446988 August 1948 Flukes et al. 3167929 February 1965 Rorschach 3402570 September 1968 Schlichtig 3440832 April 1969 Aronson 3638452 February 1972 Kruggel 4248049 February 1981 Briley 4270365 June 1981 Sampietro 4285211 August 1981 Clark 4290273 September 1981 Meckler 4301662 November 1981 Whitnah 4311024 January 1982 Itoh et al. 4374467 February 1983 Briley 4474025 October 1984 Alefeld |
| Primary Examiner: | Doerrler, William |
| Attorney, Agent or Firm: | Galgano & Burke |
| رقم الانضمام: | edspgr.05673566 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |