US3710585A - Method and apparatus for removing moisture from a refrigeration system - Google Patents
Method and apparatus for removing moisture from a refrigeration system Download PDFInfo
- Publication number
- US3710585A US3710585A US00132033A US3710585DA US3710585A US 3710585 A US3710585 A US 3710585A US 00132033 A US00132033 A US 00132033A US 3710585D A US3710585D A US 3710585DA US 3710585 A US3710585 A US 3710585A
- Authority
- US
- United States
- Prior art keywords
- vapor
- moisture
- refrigerant
- stream
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
Definitions
- An improved method and apparatus for purging moisture from a refrigeration system includes means for withdrawing a mixture of refrigerant vapor and moisture from the system, removing moisture from this mixed stream and then reintroducing the dried vapor into said evaporator, all of said operation taking place during a normal shutdown period of said system.
- This invention relates to apparatus and a method for removing undesirable moisture from a refrigeration system, particularly the closed circuit, vapor cycle type in which a flooded evaporator or shell and tube condenser are employed.
- refrigerant driers operate continuously while the compressor is running, such as by continuously passing refrigerant vapor (and entrained moisture) through a chemical drier to adsorb moisture or, as in the case of Etherington, periodically withdrawing the stream and subsequently regenerating the desiccant.
- FIG. 1 is a schematic drawing disclosing a typical water chiller and including the improved means for drying refrigerant which is withdrawn from the vapor space of the evaporator;
- FIG. 2 is a view similar to FIG. 1 showing a modification of the invention.
- FIG. 1 shows a typical vapor cycle refrigeration system including a centrifugal compressor 10, a condenser 12, an expansion device 14 and an evaporator 16.
- the refrigerant vapor is compressed by the compressor and conducted to condenser 12 by means of a conduit 20.
- the liquid refrigerant flows to the expansion device by means of passages 22 and the low pressure refrigerant passes into the evaporator shell through passage 24.
- the vapor is delivered to the suction side of the compressor through conduit 26.
- the evaporator described herein is of the flooded type in which the tube bundle 30 in shell 31 is.at least partly submerged in a body of liquid refrigerant, the level of which normally varies (depending on the load) around the line indicated at 32.
- the improvement of the present invention comprises means connected to the upper portion of the evaporator shell for withdrawing a stream of refrigerant vapor containing moisture and for drying the same.
- a heater element 38 is operatively associated with a conduit 39 which has its entrance end located at 40 and its exit end located at 42.
- a drier element 44 which may be either of the disposable or regenerative type, is located in conduit 39 to adsorb water as the stream passes through it.
- the heater element is energized only during shutdown of the system when the moisture tends to migrate into the upper space above the tube bundle.
- the heat energy applied to the conduit by the heater causes a convective movement of vapor from the entrance 40 to the exit 42 through the drier element.
- a mechanical vapor flow inducing element such as blower 50
- blower 50 is substituted for the heater.
- the blower is energized, causing the refrigerant vapor and moisture to circulate through the line, only when the system is shut down.
- refrigerant drier means refrigerant drier means; and means for circulating a stream of refrigerant vapor and moisture through said drier means from the vapor space of said system during periods when the system is not in operation.
- said means for circulating said stream includes conduit means connecting said system and said refrigerant drier means in a closed circuit fluid path, and a heater element adapted to induce circulation of vapor through said conduit means and said drier.
- Apparatus as defined in claim 1 wherein said means for circulating said stream includes a blower in said conduit means.
- a method of removing moisture from a refrigeration system of the type utilizing a flooded evaporator including an evaporator shell, a tube bundle in said shell, and a body of refrigerant therein, the refrigerant level being below the upper portion of said shell; the steps which include withdrawing a stream of refrigerant vapor and moisture only during periods when said of refrigerant vapor and moisture from said condenser only during periods when said system is not in operation, removing moisture from said vapor and moisture stream and returning the dried refrigerant vapor to said condenser.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13203371A | 1971-04-07 | 1971-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3710585A true US3710585A (en) | 1973-01-16 |
Family
ID=22452137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00132033A Expired - Lifetime US3710585A (en) | 1971-04-07 | 1971-04-07 | Method and apparatus for removing moisture from a refrigeration system |
Country Status (8)
Country | Link |
---|---|
US (1) | US3710585A (de) |
JP (1) | JPS5529344B1 (de) |
AU (1) | AU466919B2 (de) |
CA (1) | CA957522A (de) |
DE (1) | DE2214578C3 (de) |
FR (1) | FR2132791B1 (de) |
GB (1) | GB1375315A (de) |
IT (1) | IT950747B (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4267705A (en) * | 1979-09-12 | 1981-05-19 | Carrier Corporation | Refrigeration purging system |
US4531375A (en) * | 1984-05-14 | 1985-07-30 | Carrier Corporation | Purge system monitor for a refrigeration system |
US20070028647A1 (en) * | 2005-08-04 | 2007-02-08 | York International | Condenser inlet diffuser |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3425735C2 (de) * | 1984-07-12 | 1986-07-10 | Danfoss A/S, Nordborg | Kältemitteltrockner für eine Kälteanlage |
US4683724A (en) * | 1985-10-28 | 1987-08-04 | V. M. International, Inc. | Refrigeration moisture eliminating device and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2400620A (en) * | 1945-01-18 | 1946-05-21 | Worthington Pump & Mach Corp | Purging system for refrigerating systems |
US2509787A (en) * | 1949-01-28 | 1950-05-30 | Philco Corp | Dehydration of refrigeration systems |
US2613534A (en) * | 1952-10-14 | Method of testing for excess mois | ||
US3013404A (en) * | 1960-01-04 | 1961-12-19 | Carrier Corp | Purge mechanism for refrigeration system |
US3205679A (en) * | 1961-06-27 | 1965-09-14 | Air Prod & Chem | Low temperature refrigeration system having filter and absorber means |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE354549A (de) * | ||||
US3131548A (en) * | 1962-11-01 | 1964-05-05 | Worthington Corp | Refrigeration purge control |
-
1971
- 1971-04-07 US US00132033A patent/US3710585A/en not_active Expired - Lifetime
-
1972
- 1972-02-21 CA CA135,182A patent/CA957522A/en not_active Expired
- 1972-02-23 GB GB840372A patent/GB1375315A/en not_active Expired
- 1972-02-24 AU AU39326/72A patent/AU466919B2/en not_active Expired
- 1972-02-25 JP JP1956572A patent/JPS5529344B1/ja active Pending
- 1972-03-24 IT IT22366/72A patent/IT950747B/it active
- 1972-03-24 DE DE2214578A patent/DE2214578C3/de not_active Expired
- 1972-04-07 FR FR7212364A patent/FR2132791B1/fr not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2613534A (en) * | 1952-10-14 | Method of testing for excess mois | ||
US2400620A (en) * | 1945-01-18 | 1946-05-21 | Worthington Pump & Mach Corp | Purging system for refrigerating systems |
US2509787A (en) * | 1949-01-28 | 1950-05-30 | Philco Corp | Dehydration of refrigeration systems |
US3013404A (en) * | 1960-01-04 | 1961-12-19 | Carrier Corp | Purge mechanism for refrigeration system |
US3205679A (en) * | 1961-06-27 | 1965-09-14 | Air Prod & Chem | Low temperature refrigeration system having filter and absorber means |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4267705A (en) * | 1979-09-12 | 1981-05-19 | Carrier Corporation | Refrigeration purging system |
US4531375A (en) * | 1984-05-14 | 1985-07-30 | Carrier Corporation | Purge system monitor for a refrigeration system |
US20070028647A1 (en) * | 2005-08-04 | 2007-02-08 | York International | Condenser inlet diffuser |
Also Published As
Publication number | Publication date |
---|---|
IT950747B (it) | 1973-06-20 |
AU466919B2 (en) | 1973-08-30 |
DE2214578A1 (de) | 1972-10-19 |
DE2214578B2 (de) | 1978-01-26 |
AU3932672A (en) | 1973-08-30 |
DE2214578C3 (de) | 1978-10-19 |
GB1375315A (de) | 1974-11-27 |
JPS5529344B1 (de) | 1980-08-02 |
FR2132791A1 (de) | 1972-11-24 |
CA957522A (en) | 1974-11-12 |
FR2132791B1 (de) | 1974-10-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: YORK INTERNATIONAL CORPORATION, 631 SOUTH RICHLAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE;ASSIGNOR:BORG-WARNER CORPORATION;REEL/FRAME:004676/0360 Effective date: 19860609 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE Free format text: SECURITY INTEREST;ASSIGNOR:YORK INTERNATIONAL CORPORATION;REEL/FRAME:005156/0705 Effective date: 19881215 |