US2894731A - Refrigerating apparatus - Google Patents
Refrigerating apparatus Download PDFInfo
- Publication number
- US2894731A US2894731A US522481A US52248155A US2894731A US 2894731 A US2894731 A US 2894731A US 522481 A US522481 A US 522481A US 52248155 A US52248155 A US 52248155A US 2894731 A US2894731 A US 2894731A
- Authority
- US
- United States
- Prior art keywords
- evaporator
- fins
- fin
- roll
- refrigerant
- 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
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/022—Evaporators with plate-like or laminated elements
- F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49377—Tube with heat transfer means
- Y10T29/49378—Finned tube
Definitions
- This invention relates to refrigerating apparatus and more particularly to an improved type of refrigerant evaporator.
- Another object of this invention is to provide a roll bonded evaporator wherein condensate forming on the evaporator readily drains from the surfaces of the evaporator.
- Still another object of this invention is to provide a new method of manufacturing fin and tube type evaporators.
- Figure 1 is a plan view of a roll bonded plate showing the arrangement of the refrigerant passages therein;
- Figure 2 is a View similar to Figure 1 showing the plate in a later stage of manufacture
- Figure 3 is a sectional view taken substantially on line 33 of Figure 2.
- Figure 4 is a perspective view of a modified form of evaporator.
- the reference numeral designates a roll bonded evaporator having a refrigerant passage 12 formed therein as shown.
- the roll bonding process used in manufacturing the evaporator 10 is that disclosed in Long Patent No. 2,662,273, to which reference may be made for a more complete disclosure of the bonding process.
- Evaporators made by this process are in the form of flat plates having internal passages formed while the plates are held between a pair of flat dies.
- refrigerant passage 12 comprises a plurality of parallel U-shaped loops 14 which are arranged so as to make it possible to cut slits 16 between adjacent loop portions so as to form a plurality of finger-like projections 18.
- the resulting fingerlike projections 18 are bent into a plane at right angles to the one supporting edge portion 20 of the plate as best shown in Figures 2 and 3.
- the resulting product is a roll forged evaporator which in effect is a fin and tube type of evaporator with the projecting fingers 18 serving as a series of parallel cantilever fins having refrigerant passages 14 disposed within the fins.
- the supporting edge of the roll bonded evaporator may be corrugated somewhat as shown in Figure 4 so as to reduce the distance between the adjacent fins.
- Another advantage of corrugating the one edge is that it reduces the amount of twist necessary in each of the projecting fins.
- the evaporator be arranged with the bottom edges of the fins inclined slightly so that the condensate will all drain to the lowermost corners of the fins.
- Liquid refrigerant would be supplied to the one end of the passage 14 by means of a conventional refrigerant liquefying means (not shown) in accordance with usual practice.
- the one edge of the plate which supports the cantilever fins constitutes a header for directing refrigerant from the one fin to the next.
- one bank of fins has been shown whereas several banks could be connected in parallel and if desired, the fins could be vertically disposed.
- a one piece sheet metal element having a plurality of integrally formed aligned finger-like projections extending away from one edge portion of said element and forming a plurality of parallel fins between which air may flow, said projections being arranged in side by side relationship and having refrigerant passage means formed directly in said projections, said one edge portion being foreshorterred by having a plurality of corrugations formed therein with the sides of said corrugations arranged substantially in alignment with said projections.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
July 14, 1959 .4, URTZ 2,894,731
REFRIGERATINGV APPARATUS Filed July 18, 1955 INVENTOR. Clifford h. Wurlz VRVEGWJM/ His A/Iorney United States Patent Motors Corporation, Detroit, Mich., a corporation of Delaware Application July 18, 1955, Serial No. 522,481
1 Claim. (Cl. 257-256) This invention relates to refrigerating apparatus and more particularly to an improved type of refrigerant evaporator.
The desirability of manufacturing evaporators and other types of heat exhangers by the roll bonding process has long been recognized but prior to this invention it was considered that only plate type evaporators could be manufactured by the roll bonding process since the roll bonding process is only capable of producing flat plates which have no projecting fins. Roll bonded plate type evaporators have now gone into extensive use but no one has heretofore constructed an evaporator of the so called fin and tube type by the roll bonding process. It is an object of this invention to so arrange the refrigerant passages in a plate and to otherwise process the plate so as to enable one to construct fin and tube type evaporator by the roll bonding process.
Another object of this invention is to provide a roll bonded evaporator wherein condensate forming on the evaporator readily drains from the surfaces of the evaporator.
More particularly, it is an object of this invention to manufacture roll bonded evaporators wherein the refrigerant passages are arranged in a series of parallel loops disposed in a series of flat cantilever fin-like projections which have been bent into a plane perpendicular to the plane of the original roll bonded plate.
Still another object of this invention is to provide a new method of manufacturing fin and tube type evaporators.
Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of the present invention is clearly shown.
In the drawings:
Figure 1 is a plan view of a roll bonded plate showing the arrangement of the refrigerant passages therein;
Figure 2 is a View similar to Figure 1 showing the plate in a later stage of manufacture;
Figure 3 is a sectional view taken substantially on line 33 of Figure 2; and
Figure 4 is a perspective view of a modified form of evaporator.
Referring now to the drawing wherein a preferred embodiment of the invention has been shown, the reference numeral designates a roll bonded evaporator having a refrigerant passage 12 formed therein as shown. The roll bonding process used in manufacturing the evaporator 10 is that disclosed in Long Patent No. 2,662,273, to which reference may be made for a more complete disclosure of the bonding process. Evaporators made by this process are in the form of flat plates having internal passages formed while the plates are held between a pair of flat dies.
In the evaporator shown in Figures 1, 2, and 3, the
ice
In those constructions where it is desirable to provide fins which are closer to one another than those shown in Figures 2 and 3, the supporting edge of the roll bonded evaporator may be corrugated somewhat as shown in Figure 4 so as to reduce the distance between the adjacent fins. Another advantage of corrugating the one edge is that it reduces the amount of twist necessary in each of the projecting fins.
In actual practice, it is preferable wherever possible that the evaporator be arranged with the bottom edges of the fins inclined slightly so that the condensate will all drain to the lowermost corners of the fins. Liquid refrigerant would be supplied to the one end of the passage 14 by means of a conventional refrigerant liquefying means (not shown) in accordance with usual practice. The one edge of the plate which supports the cantilever fins constitutes a header for directing refrigerant from the one fin to the next. For purposes of illustration only, one bank of fins has been shown whereas several banks could be connected in parallel and if desired, the fins could be vertically disposed.
'By virtue of the above described construction and arrangement, it is possible to manufacture a fin and tube type evaporator from a one piece roll bonded element and to arrange the main fin-like cooling surfaces of the evaporator in vertical planes so that the condensate or defrost water which may form on the surfaces of the evaporator will drain by gravity to the lower edge of each of the fin-like fingers or projections 18 and thereby not interfere with the efiicient operation of the evaporator.
While the form of embodiment of the invention as herein disclosed constitutes a preferred form, it is to be understood that other forms might be adopted, as may come within the scope of the claim which follows.
What is claimed is as follows:
In a tube and fin type heat exchange device, a one piece sheet metal element having a plurality of integrally formed aligned finger-like projections extending away from one edge portion of said element and forming a plurality of parallel fins between which air may flow, said projections being arranged in side by side relationship and having refrigerant passage means formed directly in said projections, said one edge portion being foreshorterred by having a plurality of corrugations formed therein with the sides of said corrugations arranged substantially in alignment with said projections.
References Cited in the file of this patent UNITED STATES PATENTS 1,798,652 Booth Mar. 31, 1931 2,162,586 Newman June 13, 1939 2,363,435 Osborn Nov. 21, 1944 2,546,737 Gaul Mar. 27, 1951 2,690,002 Grenell Sept. 28, 1954 2,712,736 Wurtz July 12, 1955 2,773,301 Karmazin Dec. 11, 1956 2,795,035 Kafer June 11, 1957
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US522481A US2894731A (en) | 1955-07-18 | 1955-07-18 | Refrigerating apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US522481A US2894731A (en) | 1955-07-18 | 1955-07-18 | Refrigerating apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US2894731A true US2894731A (en) | 1959-07-14 |
Family
ID=24081042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US522481A Expired - Lifetime US2894731A (en) | 1955-07-18 | 1955-07-18 | Refrigerating apparatus |
Country Status (1)
Country | Link |
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US (1) | US2894731A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2999304A (en) * | 1960-01-29 | 1961-09-12 | Olin Mathieson | Method of manufacturing heat exchangers |
US3165150A (en) * | 1959-08-14 | 1965-01-12 | Reynolds Metals Co | Heat-exchanger having selectively spaced heat-exchange shelving integrally formed therein |
US3173479A (en) * | 1959-09-30 | 1965-03-16 | Olin Mathieson | Heat exchanger |
US3199584A (en) * | 1958-09-29 | 1965-08-10 | Olin Mathieson | Heat exchanger |
US3273227A (en) * | 1963-06-12 | 1966-09-20 | Olin Mathieson | Fabrication of heat exchange devices |
US3286328A (en) * | 1963-06-24 | 1966-11-22 | Olin Mathieson | Method of making heat exchangers |
US3331436A (en) * | 1966-01-25 | 1967-07-18 | Olin Mathieson | Heat exchanger |
US3368261A (en) * | 1965-03-30 | 1968-02-13 | Olin Mathieson | Method of making heat exchangers |
US3368614A (en) * | 1963-06-24 | 1968-02-13 | Olin Mathieson | Heat exchanger |
DE1263669B (en) * | 1961-06-21 | 1968-03-21 | Olin Mathieson | Method of making a hollow heat exchanger |
US3416600A (en) * | 1967-01-23 | 1968-12-17 | Whirlpool Co | Heat exchanger having twisted multiple passage tubes |
US3535761A (en) * | 1967-08-30 | 1970-10-27 | Gulf & Western Ind Prod Co | Method of fabricating radiators |
FR2502763A2 (en) * | 1981-03-30 | 1982-10-01 | Bernier Jacques | Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser |
US5531268A (en) * | 1993-11-24 | 1996-07-02 | Showa Aluminum Corporation | Heat exchanger |
US20050284619A1 (en) * | 2004-06-29 | 2005-12-29 | Jeroen Valensa | Multi-pass heat exchanger |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1798652A (en) * | 1930-02-13 | 1931-03-31 | Morris F Booth | Cooling unit for refrigerating systems |
US2162586A (en) * | 1937-06-12 | 1939-06-13 | Gen Electric | Refrigerant evaporator |
US2363435A (en) * | 1941-07-28 | 1944-11-21 | Hoover Co | Refrigeration |
US2546737A (en) * | 1947-12-18 | 1951-03-27 | Int Harvester Co | Sheet metal evaporator |
US2690002A (en) * | 1949-11-18 | 1954-09-28 | Olin Ind Inc | Method of making hollow sheet metal fabrications having a plurality of interconnected passageways |
US2712736A (en) * | 1953-07-08 | 1955-07-12 | Gen Motors Corp | Refrigeration evaporator |
US2773301A (en) * | 1950-11-21 | 1956-12-11 | Karmazin John | Method of making heat exchange unit |
US2795035A (en) * | 1955-08-03 | 1957-06-11 | Revco Inc | Method of making a refrigerated cabinet liner |
-
1955
- 1955-07-18 US US522481A patent/US2894731A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1798652A (en) * | 1930-02-13 | 1931-03-31 | Morris F Booth | Cooling unit for refrigerating systems |
US2162586A (en) * | 1937-06-12 | 1939-06-13 | Gen Electric | Refrigerant evaporator |
US2363435A (en) * | 1941-07-28 | 1944-11-21 | Hoover Co | Refrigeration |
US2546737A (en) * | 1947-12-18 | 1951-03-27 | Int Harvester Co | Sheet metal evaporator |
US2690002A (en) * | 1949-11-18 | 1954-09-28 | Olin Ind Inc | Method of making hollow sheet metal fabrications having a plurality of interconnected passageways |
US2773301A (en) * | 1950-11-21 | 1956-12-11 | Karmazin John | Method of making heat exchange unit |
US2712736A (en) * | 1953-07-08 | 1955-07-12 | Gen Motors Corp | Refrigeration evaporator |
US2795035A (en) * | 1955-08-03 | 1957-06-11 | Revco Inc | Method of making a refrigerated cabinet liner |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3199584A (en) * | 1958-09-29 | 1965-08-10 | Olin Mathieson | Heat exchanger |
US3165150A (en) * | 1959-08-14 | 1965-01-12 | Reynolds Metals Co | Heat-exchanger having selectively spaced heat-exchange shelving integrally formed therein |
US3173479A (en) * | 1959-09-30 | 1965-03-16 | Olin Mathieson | Heat exchanger |
US2999304A (en) * | 1960-01-29 | 1961-09-12 | Olin Mathieson | Method of manufacturing heat exchangers |
DE1263669B (en) * | 1961-06-21 | 1968-03-21 | Olin Mathieson | Method of making a hollow heat exchanger |
US3273227A (en) * | 1963-06-12 | 1966-09-20 | Olin Mathieson | Fabrication of heat exchange devices |
US3368614A (en) * | 1963-06-24 | 1968-02-13 | Olin Mathieson | Heat exchanger |
US3286328A (en) * | 1963-06-24 | 1966-11-22 | Olin Mathieson | Method of making heat exchangers |
US3368261A (en) * | 1965-03-30 | 1968-02-13 | Olin Mathieson | Method of making heat exchangers |
US3331436A (en) * | 1966-01-25 | 1967-07-18 | Olin Mathieson | Heat exchanger |
US3416600A (en) * | 1967-01-23 | 1968-12-17 | Whirlpool Co | Heat exchanger having twisted multiple passage tubes |
US3535761A (en) * | 1967-08-30 | 1970-10-27 | Gulf & Western Ind Prod Co | Method of fabricating radiators |
FR2502763A2 (en) * | 1981-03-30 | 1982-10-01 | Bernier Jacques | Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser |
US5531268A (en) * | 1993-11-24 | 1996-07-02 | Showa Aluminum Corporation | Heat exchanger |
US20050284619A1 (en) * | 2004-06-29 | 2005-12-29 | Jeroen Valensa | Multi-pass heat exchanger |
US7104314B2 (en) * | 2004-06-29 | 2006-09-12 | Modine Manufacturing Company | Multi-pass heat exchanger |
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