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Publication numberUS3229760 A
Publication typeGrant
Publication dateJan 18, 1966
Filing dateDec 2, 1963
Priority dateDec 2, 1963
Publication numberUS 3229760 A, US 3229760A, US-A-3229760, US3229760 A, US3229760A
InventorsHurter Donald Andrew, Tallini Richard Francis, Karlson Gunnar George
Original AssigneeStandard Thomson Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Heat exchanger apparatus
US 3229760 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

1966 D. A. HURTER ETAL 3,229,760

INVENTORLS DONALD ANDREW HURTER GUNNAR GEORGE KARLSON RICHARD FRANCIS TALLINI Maw ATTORNEY Jan. 18, 1966 HURTER ETAL 3,229,760

HEAT EXCHANGER APPARATUS Filed Dec. 2, 1963 2 Sheets-Sheet 2 INVENTORS DONALD ANDREW HURTER GUNNAR GEORGE KARLSON RICHARD FRANCIS TALLINI ATT RNEY United States Patent 3,229,760 HEAT EXCHANGER APPARATUS Donald Andrew Hurter, Nor-wood, Gunnar George Karlson, Belmont, and Richard Francis Tallini, Sudbury,

Mass., assignors to Standard-Thomson Corporation,

Waltham, Mass, a corporation of Delaware Filed Dec. 2, 1963, Ser. No. 327,395 2 Claims. (Cl. 165-134) This invention relates to heat exchanger apparatus. The invention relates more particularly to radiator structure provided with cooling fins which are relatively easily damaged and means for protection thereof.

Radiator structures or heat exchangers normally comprise a plurality of fluid conduit members to which are firmly joined a multiplicity of fins or the like. Thus, heat from the conduit members readily flows into the fins.

Thus, air or other gas, at a lower temperature than the fins, cools the fins as the air engages the fins and receives heat therefrom. Thus, the conduit members are cooled and the fluid within the conduit members is cooled.

Radiator structures are used with many types of apparatus. Radiator or heat exchanger apparatus which is used in aircraft frequently has the fins thereof damaged by hail impingement if the aircraft encounters a hail storm. Also, in the use of radiators with various types of vehicles, stones or the like frequently strike the fins and cause damage thereto.

Attempts have been made to protect the fins. One method has been that of disposing bars or rods in the form of a grid or the like in front of the fins so that hail or stones or other objects will strike the bars or rods rather than the fins. However, it has been found that radiator structure which is so provided with bars or rods for protection of the fins thereof frequently becomes clogged with ice or snow when ambient temperatures are freezing temperatures. Icing conditions therefore result in blocking or restricting of airflow through the radiator. When such conditions exist, the proper amount of air does not flow through the radiator or heat exchanger.

Thus, it is an object of this invention to provide radiator or heat exchange structure which has protective means which prevents damage by hail or stones or the like and which protective means does not permit or cause blocking of airflow by ice or snow or the like.

Other objects and advantages reside in the construction of parts, the combination thereof, the method of manufacture and the mode of operation, as will become more apparent from the following description.

In the drawing:

FIGURE 1 is a perspective view of heat exchanger apparatus of this invention.

FIGURE 2 is an exploded perspective view of the apparatus of this invention.

FIGURE 3 is an enlarged fragmentary perspective view showing cooling fins and protective means therefor of the apparatus of this invention.

FIGURE 4 is an enlarged fragmentary perspective view showing protective means of the apparatus of this invention.

FIGURE 5 is a fragmentary enlarged perspective view of a modification of heat exchanger apparatus of this in- "ice disposed intermediate each pair of the pans 11 and are firmly secured thereto in good thermal conductive relationship therewith. Thus, the fins 12 receive heat from the fluid within the pans or tubes 11, as the pans or tubes 11 are heated by the fluid therewithin. Therefore, air or other gas which is lower in temperature than the fluid within the pans 11 and passing in engagement with the fins 12 receives heat from the fins 12.

A main inlet conduit 14 and a main outlet conduit 16 connect to or are in communication with the tubes or pans 11 so that fluid entering the inlet conduit 14 flows through the pans 11 and out through the outlet conduit 16.

The fins 12 are readily damaged if struck by objects such as hail or stone or the like.

A guard structure 20 of this invention protects the fins 1-2, as shown in FIGURE 2. The guard structure 20 comprises a frame or housing 22 within which are a plurality of protective fluid conductor members 24 which are larger and are of much stronger construction than the fins 12. The protective fluid conductor members 24 are shown herein in the form of strips which are preferably shaped in a wave formation as shown, but may be of any other desired shape or formation disposed in front of the fins 12. If desired, retainer rods 25 may be carried by the frame 22 between opposing side portions thereof.

The guard structure 20 has an inlet conduit 26 which connects to the main inlet conduit 14 so that a portion of the fluid flowing into the main inlet conduit 14 flows through the protective conductor members 24, rather than through the tubes or pans 11.

The guard structure 20 also has an outlet conduit 28 which is connected to the main outlet conduit 16 so that fluid flowing from the conductor members 24 flows outwardly through the conduit 28 and into the main outlet conduit 16. The strip conductor members 24 are thus joined to the conduit members 11 through the inlet conduit 26 and outlet conduit 28.

It is to be understood, however, that any suitable desired arrangement of inlet and outlet conduits and connections for the pans 12 and for the protective conductor members 24 may be employed. The protective conductor members 24 do not need to be joined to the conduit members 14 and 16 and the fluid flowing through the protective conductor members does not need to be a portion of the fluid which would otherwise flow through the fins 12.

Due to the fact that fluid which flows through the protective conductor members 24 is warmer than ambient temperatures, it is not possible for clogging conditions caused by ice or snow among the protective conductor members to occur. Any ice or snow becoming disposed among the protective conduct-or members 24 is melted by the heat of the fluid therewithin. Therefore, the protective conductor members 24 guard the fins 12 against damage by impingement thereupon without the possibility of adverse effects which might otherwise be caused by icing action.

FIGURES 5 and 6 show a modification of the heat exchanger apparatus of this invention. Conduit tube or pan members 50 extend beyond fin members 52. In other words, the front wall of the fin members 52 is recessed rearwardly from the leading edges of the conduit tubes or pan members 50. As stated above, the fin members 52 are secured to the conduit pan members 50 so that there is good thermal conductivity therebetween. Herein two rows or layers of fin members 52 are shown between two pans or tubes 54. A thin heat conductive sheet or strip 53 is shown between the two rows or layers of fin members 52 and attached thereto.

A solid protective strip 54 is disposed between each.

pair of adjacent fluid conduit pans 50. Each strip is shown as being in a wave shape and is firmly attached to the pans 50 which it engages so that there is good thermal conductivity therebetween.

The protective strips 54 are disposed in front of the fins 52 so as to protect the fins against damage from impingement by moving objects such as hail or stones or the like.

As warm fluid flows through the conduit tubes or pans 54 the fluid heats the pans 54. Heat from the pans 54 flows into the fins 52 and heat from the fins 52 flows into the air or gas which moves over the fins 52.

Due to the fact that the protective strips 54 are firmly secured to the pans 50, heat from the pans 50 also flows into the protective strips 54. Thus, the protective strips 54 are warmer than the ambient air or gas. Therefore, ice or snow or the like coming into contact with the protective strips 54 melts and does not prevent flow of air through the passages formed by the fins 52.

Thus, the heat exchanger structure of FIGURES 5 and 6 includes means for protecting the cooling fins 52 against damage. Furthermore, moisture does not accumulate among the protective strips to freeze and to clog the passages formed by the fins.

Although the preferred embodiment of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, the combination thereof, and mode of operation, which generally stated consist in a device capable of carrying out the objects set forth, as dis-closed and defined by the appended claims.

The invention having thus been described, the following is claimed:

1. Heat exchanger apparatus for use with aircraft, the heat exchanger apparatus being of the type provided with a plurality of spaced-apart fluid conduit members, thin fin members secured to the fluid conduit members and in good thermal conductive relationship therewith, the apparatus having a forward side and a rearward side, the improvement comprising:

a plurality of strips of protective members disposed adjacent the thin fin members at the forward side of the apparatus, each of the strips of protective members being much larger in thickness than any of the thin fin members, each of the strips of protective members being joined to at least one of the fluid conduit members in good thermal conductive relationship therewith so that heat from the fluid conduit members flows into the strips of protective members, each of the strips having a shape which provides openings for passage of air from the forward side of the apparatus to the rearward side thereof as the air engages the strips and the thin fin members.

2. Heat exchanger apparatus for aircraft comprising:

a plurality of spaced-apart fluid conduit members adapted to carry a fluid which is warmer than the ambient temperature within which the apparatus is disposed,

a plurality of thin fin members secured to the fluid conduit members in good thermal exchange relationship therewith,

a plurality of spaced-apart guard members disposed in protective relationship to the thin fin members and adjacent thereto, each of the guard members being elongate and having substantially rectangular cross-section with comparatively narrow edge surf-aces and comparatively long side surfaces, there being an edge surface of each guard member facing the thin fin members and an edge surface of each guard member facing away from the thin fin members, the greatest spacing between adjacent guard members being greater than the width dimension thereof, the spacing being provided for flow of air to the thin fin members,

the guard members being in thermal conductive relationship with respect to the fluid within the fluid conduit members.

References Cited by the Examiner UNITED STATES PATENTS 1,226,344 5/1917 Livingston -134 1,451,871 3/1923 Fowler 165-134 1,845,435 2/1932 Murray 16555 2,501,147 3/1950 Tolan 165-134 X 2,861,167 11/1958 Wick 16555 ROBERT A. OLEARY, Primary Examiner.

CHARLES SUKALO, Examiner.

Patent Citations
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US2501147 *Apr 17, 1946Mar 21, 1950Warren Webster & CompanyRadiator bracket
US2861167 *Mar 4, 1957Nov 18, 1958Wick Alwood PReversible electric fin-type baseboard heater
Referenced by
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US4501321 *Nov 10, 1982Feb 26, 1985Blackstone CorporationAfter cooler, charge air cooler and turbulator assemblies and methods of making the same
US4529034 *Jul 27, 1981Jul 16, 1985Modine Manufacturing CompanyHeat exchanger having a header plate
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US8091621Jul 18, 2008Jan 10, 2012Modine Manufacturing CompanyFlat tube, flat tube heat exchanger, and method of manufacturing same
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US8281489Jul 21, 2008Oct 9, 2012Modine Manufacturing CompanyFlat tube, flat tube heat exchanger, and method of manufacturing same
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Classifications
U.S. Classification165/134.1, 165/152
International ClassificationF28D1/04
Cooperative ClassificationF28D1/05366, F28F1/126, F28D1/0417
European ClassificationF28D1/053E6, F28F1/12D, F28D1/04E2
Legal Events
DateCodeEventDescription
Oct 31, 1988ASAssignment
Owner name: JOSEPH POLLAK CORPORATION
Owner name: STANDARD-THOMSON CORPORATION
Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:005001/0921
Effective date: 19881012
Oct 30, 1986ASAssignment
Owner name: PITTSBURGH NATIONAL BANK, A NATIONAL BANKING ASSOC
Free format text: SECURITY INTEREST;ASSIGNORS:STA SUB INC.;JPA SUB, INC.;REEL/FRAME:004625/0564
Effective date: 19860619
Owner name: STANDARD-THOMSON CORPORATION
Free format text: MERGER;ASSIGNOR:STANDARD-THOMSON CORPORATION (INTO) STA SUB, INC. (CHANGED TO);REEL/FRAME:004634/0179