Патент USA US2405783код для вставки
ELECTRIC HEATER Filed Feb. 27, 1943 _ ’3‘Sheets—Sheet 1 ' INVE'ZNTOR. ' éV/en J Garden/your “42 ', g / - ' 0%; ATTORNEYS. Au’g- 13, 1946- A. J. GARDENHOUR 2,405,733 ELECTRIC HEATER Filed Feb. 27, 1943 3 Sheets-Sheet 2 ‘CV/‘e0 k}: qaralenlzggga ATTORNEYS. Patented Aug. 13, 1946 2,405,783 ‘UNITED STATES PATENT OFFICE 2,405,783 ELECTRIC HEATER Allen J. Gardenhour, Waynesboro, Pa. Application February 27, 1943, Serial No. 477,419 12 Claims. 1 This invention relates to improvements in elec trical heaters. The primary object of this invention is the provision of a relatively compact portable type of electric heater having a free circulation of air in such manner as to permit of the most effi cient and economical heating thereof. A further object of this invention is the pro vision of a portable electric heater having forced (Cl. 219—39) 2 otherwise secured thereto in a triangular ar rangement so as to support the lower edge of the casing [0 above a supporting surface in the man ner shown in the drawings, and permit unob structed circulation of air upwardly thru the chamber II. All of these parts are preferably made of sheet metal and the casing 19 may be reinforced by annular beads or corrugations I4. The mode of connecting the sheet metal casing air circulation. The same is so arranged that 10 i0 is designated at the lap joint shown at I 15 in the heating unit may be cut out to permit of the Figure 6 of the drawings. device being used as a cooling fan in hot weather. The humidi?er arrangement F may be con A further object of this invention is the pro sidered as part of the general housing structure. vision of a thermostatically controlled portable It includes lower and upper cover discs 20 and electric heater which is particularly well adapted 15 2i respectively of preferably the same diameter; for use in the heating of poultry and animal which diameter is greater than the external di brooders and houses. ameter of the upper end of the casing [0, as shown A further object of this invention is the pro in Figure 4 of the drawings. These discs 23 and vision of an improved electrical heater having 2! are assembled in spaced relation by means of a novel humidifying assemblage. a triangular arrangement of screws 23 having Other objects and advantages of this inven spacer sleeves or washers 25. The heads of these tion will be apparent during the course of the screws are operable from the top plate 2i and the following detailed description. 7 nuts lie below the lower plate 2|]. The space be In the accompanying drawings, forming a part tween the cover plates or discs 20 and 2| may of this speci?cation, and wherein similar refer 25 vary, but it is preferably rather a shallow depth, ence characters designate corresponding parts so as to insulate the top disc 2!, to a certain ex hruout the several views, tent, and yet not admit of the loss of any heat Figure 1 is a side elevation of the improved elec value. The top plate 2| is provided with a detach trical heater. able heat insulated handle 23a, preferably made Figure 2 is a plan view of the heater. 30 of plastic. Figure 3 is a cross sectional view showing part The lower disc 20 is preferably provided with of the humidi?er or vapor construction of the heater, the section being taken substantially on the line 3—3 of Figure 4. Figure 4 is a vertical sectional view taken thru - the improved electrical heater. casing supporting pieces 27, preferably of angle formation, and made of sheet metal. These pieces 2'! are riveted on the inside at the upper end of the casing Iii and extend thereabove in a triangular arrangement. Their upper ends are Figure 5 is a, diagram of the wiring arrange radially inturned and secured to the under side ment of the heater. of the lower cover plate 20 by the screws 23 Figure 6 is a cross sectional view taken thru the heater substantially on the line 6-6 of Fig 40 above mentioned, as shown in Figure 1 of the drawings. The screws 23 thus serve a dual pur ure 4. pose of retaining the plates or discs 20 and Figure '7 is a plan view of a heat insulating par 2i spaced and attaching the humidi?er assem tition. blage in spaced relation above the casing l U. The In the drawings, wherein for the purpose of illustration is shown only a preferred embodi 45 lower disc 28 is spaced 2. suf?cient distance above the top edge or margin of the casing Ill to admit ment of the invention, the letter A may generally designate the improved electrical heater which of free circulation of air thru this space into the room. may consist of a housing construction B; heating unit C; radiator D; forced draft motor and fan The humidi?er construction F furthermore in assemblage E, and humidi?er F. 60 cludes an inverted cone-shaped water receptacle The housing construction B includes a prefer 3!] which is riveted at 3| to the under surface of ably cylindrical metal casing l0 open at the top the disc 20. It is disposed axially of the casing and bottom and providing a passageway or cham I0 and is of less diameter at its upper end than ber ll therein for free circulation of air. The the internal diameter of the casing Ill. The cone casing ID has metal supporting legs [2 riveted or shaped receptacle 30 serves the dual function of 2,405,733 3 acting as a de?ector for the air and a receptacle for water. It is noted that the lower end of the receptacle F extends slightly into the upper end of the chamber H, but for the most part the 4 which clamps the other wire end 93 of the heater coil 56 in place, as shown in Figure Ll. The screw 92, of course, acts as a conductor and it sup ports the other terminal 95 in place below the supporting strip or member til, as shown in Figure Ll. In order to protect the motor and cooling fan edge of the housing ill. structure and to insure a proper updraft circu~~ The means for ?lling the receptacle with water lation of heated air, I prefer to place a ba?le ring is shown in Figure 3 of the drawings and con Ml], of some insulating material, such as asbestos, sists of preferably insulated nipples 3-5 supported 10 in surrounding relation with the lower end por by and between the cover discs 2d and 2! pro tion 5? of the heater cone 55, below the resistance viding passageways so that the compartment coil 56. It is provided with a central opening of the water receptacle can be filled there it! large enough to space the same slightly from thru. The passageway thru each nipple 35 also , the portion 5'! of the supporting cone. It is pro permits the transmission of vapor to‘ the room vided with a small opening 282 therein adapted in which the heater is disposed. to receive the screw 92 above described; the lat Referring to the heater assemblage C, the hous ter receiving a nut as shown in Figure 4 of the ing or casing Ill in the lower part of the chamber drawings for the purpose of clamping the ba?le humidi?er receptacle-de?ector til is disposed in the space between the cover disc 2% and the top thereof, is provided with a diametrically disposed Hill in position. supporting strip All, the ends of which are down 20 ring The radiator D, of course, plays an important turned or angled and riveted at 49 to the 0p part in its association with the heater unit. It posite side of the casing it. Its horizontal dis consists of a cylindrical casing portion H8 open position in the casing id is shown in Figure 4 freely at its upper and lower ends, having the of the drawings. If desired, this strip may be passageway therethru of slightly greater diame made detachable, but it is preferably perinanent~ ter than the external diameter of the ba?ie ring ly secured in the casing Ed, and in fact it is the me. rl‘he casing no is of course spaced from only part of the heater which is permanently the casing portion iii of the main housing and secured to the casing, all other parts being re the air is adapted to freely circulate in this space movable, for purposes hereinafter set forth. between the casings It and lit. The radiator It is noted that the heating unit supporting casing I H3 is preferably provided with angle feet strip 4!} is relatively narrow, as shown in Figure 6 of the drawings, so that it will not interfere to any great extent with the free circulation of air thru the chamber l l. The heating assemblage C furthermore in cludes a coil supporting cone 55, of insulation material, such as porcelain, having the resistant coil 55 wound thereon in approved manner. Im proved means is provided for the mounting of I l l at the lower end thereof and externally‘ there on, for receiving screw bolts H2 by means of which casing can be detachably clamped upon the supporting strip till, as shown in Figure 6 of the drawings. The radiator D furthermore includes upright fins H3 welded or otherwise secured externally upon the radiator casing H0 in a radially dis posed relation exteriorly thereon. The ?ns H3 this cone so that it will not become loose due to 40 extend into the space between the casings Ill and expansion and contraction incident to tempera I Hi and their outer edges terminate short of the ture variations. To that end the lower end of inner surfaces of the casing H1, in the relation the cone is of cylindrical formation, as shown at shown in Figure a‘ of the drawings. It is to be 5'! and mounted upon an insulator support 53 particularly noted that the ba?ie ring Hi0 does consisting of lower and upper inter?tting parts not entirely obstruct the passageway thru the Gil and 59, disposed respectively below and above the supporting strip lid, as shown in Figure Ll. Insulation discs 52 overlie the upper and lower surfaces of the supporting strip to between the insulator supporting parts 66 and El, to insulate the coil connection from this strip 1W. A mount ing and clamping screw "iii ‘extends axially thru the insulator support 58 and the coil cone 55, having its screw head it below the insulator sup port part and its opposite end being threaded radiator casing I Hi, but substantially closes that passageway so that the air must be heated via the radiator construction between the casings l6 and HG. It is obvious that this insulating ring its will protect the fan and motor assemblage and also promote upward deflection of the heated current. Referring to the motor-fan assemblage E, I prefer to provide a rather strong U-shaped sup porting bracket I25, the upstanding leg portions thru an adjusting nut 73 in the upper chamber I25 of which are spaced so as to ?t against the of the cone 55, as shown in Figure ll. This screw inside of the casing ii) to be detachably clamped til acts as-a conductor and it supports a terminal there as by bolts lZl. The lower ends of these Bil at its lower end below the strip 453, as shown upstanding legs are inturned and spaced from the 60 in Figure ii. sides of the casing Ill and connected by the hori The coil 56 has a wire connection 82 extending from the upper end thereof downwardly into the cone 55 and axially therethru; its lower end be ing provided with an eye and clamped in place zontal bight portion I30 upon which the motor support 53. is of course angularly positioned with respect and fan are supported. The lower ends of the legs of the bracket I25 are secured in stable po sition against Vibration by a ring or annular sup on a metal washer 84 lying between the cone 55 65 port l3l, which may be welded to these legs in and the support 58. Of course the wire 82 is the position shown in Figure 4 of the drawings, thus placed in contact and conducting relation so that the said ring will lie below but in sup with the screw it). porting contact with the ends of the resistance Improved means is provided for mounting and connecting the other terminal of the coil 5-6, con 70 unit supporting bracket or strip 48 above de scribed, and as shown in Figures 4 and 6 of the sisting of an insulator terminal support 99 of drawings. The bight portion of the bracket I25 preferably exactly the same construction as the It consists of inter?tting parts to the length or run of the strip 46, as is shown mounted in the same insulated relation upon the strip Lid and provided with an axial screw 92 75 in Figure 6 of the drawings, and this bracket -, 2,405,783 5 I25‘, while of heavier material than the other the radiator conduit below the electrical heating supporting parts of the housing and radiator, is relatively narrow and will not obstruct free unit and above the fan. circulation of air thru the casing I0, to any ap , .3. In an electric heater, the combination of a casing open at its upper and lower ends and preciable extent. The motor I40 is detachably secured by bolts [4| to the portion I38 of the bracket I25, as shown in Figure 4 of the drawings, so thatthe providing a passageway therethru, a radiator It is an object of this invention to permit the heating unit to be placed out of operation while its ends, a radiator conduit, supporting means mounting the conduit in the passageway of the casing so as not to obstruct the flow of air thru the passageway, an electrical heating unit in conduit in the passageway of the casing of heat conducting material spaced from the inner walls of the casing to provide a passageway between the conduit and walls of the casing, an electrical said motor lies in the extreme lower end of the casing I6; partially projecting downwardly 10 heating unit, means mounting the electrical heating unit in the radiator conduit, an elec therethru, but spaced from the feet of the sup porting legs I2. The motor shaft I42‘ extends trical motor fan supported in the casing passage upwardly thru the bracket portion I30 and is way below the radiator conduit, and a motor fan protecting ba?le of insulation material provided with a fan I50 on the upper end thereof lying in the space above the bracket portion I30, 15 mounted in the radiator conduit between the and below the supporting bracket 49. The fan motor and the heating unit and between the I50 is of a diameter to extend beyond the radiator heating unit and the means which mounts the .casing III} for the de?ection of air in a forced heating unit in said conduit. draft upwardly thru the space between the 4. In an electrical heater, the combination of ‘radiator casing III! and the housing casing I8. 20 a casing having a passageway therethru open at utilizing the device as a cooling fan in warm weather. To that end, I‘ provide a switch I80 which can out out the resistance unit 56, as shown in the diagram in Figure 5 of the drawings. In this wiring system I may also place a thermo stat I52 so that the device may be used as a heater in poultry brooders and animal warming cluding an insulation core and a resistance coil wrapped thereon, means detachably mounting said core upon said supporting means, a contact connector mounted upon said supporting means for one end of said coil, a second contact con housings. 30 nector mounted upon said supporting means for It is readily apparent that the radiator unit E the other end of said coil, and a ba?ie of insula can be dsconnected from the housing by remov tion material mounted upon the last mentioned ing the cover assemblage. It is also readily ap parent that the entire motor-fan assemblage can be disconnected by loosening the bolts I2? and pulling it down thru the casing It. The heat ing unit, is, of course, detachably supported upon the bracket 40 and the parts thereof are readily accessible upon disconnection of the radiator and motor units. Thus, the device lends itself to a practical application. It can be economi cally manufactured and will insure an e?icient circulation and distribution of heated air. contact connector below the heating coil and within the radiator conduit. 5. In an electrical heater, the combination of a casing having a passageway therethru open at its ends, a radiator conduit, supporting means mounting the conduit in the passageway of the casing so as not to obstruct the flow of air thru the passageway, an electrical heating unit in cluding an insulation core and a resistance coil wrapped thereon, means detachably mounting said core upon said supporting means, a contact Various changes in the shape, size and ar connector mounted upon said supporting means rangement of parts may be made to the form of 45 for one end of said coil, a second contact con nector mounted upon said supporting means for invention herein shown and described, without departing from the spirit of the invention or the the other end of said coil, a baf?e of insulation scope of the following claims. material mounted upon the last mentioned I claim: contact connector below the heating coil and 1. In a heater, the combination of a heater 50 within the radiator conduit, and an electrical casing having the upper end thereof entirely motor fan mounted in the passageway of the open, a double walled cover having means directly casing below said insulation ba?le. connecting and supporting said walls in spaced 6. In a heating unit the combination of a cas ing, heating means in the casing, a double walled relation, means mounting the double walled cover in appreciably spaced relation wholly 55 cover including spaced upper and lower walls, above the top edge of the casing by widely spaced bolt and bushing means in the space between the walls of said cover spacing said walls so that cir narrow supporting members which will not ap cumferentially they are entirely open to the space preciably obstruct the circulation of air thru the casing and laterally outwardly thru the space between the walls, a humidi?er carried below between the cover and top of the casing, and 60 and by the lower wall, conduit means connected with the walls extending through the space be handle means on the top wall of the cover. tween said walls and opening the chamber of the 2. In an electrical heater, the combination of humidi?er above the upper wall. an upstanding conduit-like casing providing a 7. In an electrical heater the combination of passageway therethru, a radiator unit supported in the casing consisting of a conduit-like body 65 a casing having lateral enclosing walls and de ?ning a chamber open at the top and bottom mounted so as to be spaced from the inner sur thereof, a radiator conduit de?ning a chamber faces of the walls of the casing first mentioned, therein open at the top and bottom thereof, said an electrical heating unit in the radiator conduit, conduit being less in width than the casing, heat conducting ?ns externally on the radiator conduit extending into the space between the 70 means mounting the radiator conduit within the casing in spaced relation with the inner surfaces thereof, a fan and motor structure mounted upon radiator for directing air circulation upwardly the casing below said radiator conduit for circu lating air upwardly through the space exterior thru the space between the radiator and the eas ing, and a motor protecting insulation baflie in 76 of the conduit and within the casing, an electrical radiator conduit and the ?rst mentioned casing, motor-fan means carried by the casing below said 2,405,783 8 unit mounted within the radiator conduit, and insulation means in the lower part of the elec trical conduit between the electrical heating unit and the fan and motor structure for protecting the latter against radiation of heat therefrom. (17! 8. In an electrical heater the combination of a cylindrical-shaped casing structure having a chamber therein open at the top and bottom thereof, a substantially cylindrical-shaped radia tor conduit, means mounting it in the casing in spaced relation with the inner walls thereof to de?ne an annular passageway between the same a ring~shaped member mounted upon the closely spaced lower ends of said legs within the plane of mounting of said fan and spaced slightly from the tip ends of said fan, and an electrical heat ing unit mounted upon and within the casing above said fan including a radiator conduit hav ing a passageway therethrough and outer walls spaced from the sides of the walls of the casing and inwardly appreciably from the tip ends of the fan. 1].. In an electrical heater the combination of a casing structure having a chamber therein open at the top and bottom thereof, a U-shaped brack and said walls of the casing, an electrical heat et including legs and a cross portion, means de ing unit in said radiator conduit, a narrow brack tachably connecting the upper ends of said legs et support connected with said casing in the lower to the casing, the lower ends of said legs being part thereof extending transversely thereof be spaced inwardly from the upper ends thereof and low said radiator conduit, a fan and motor struc supporting a narrow strip at the lower ends there ture mounted upon said bracket, the fan extend of, a motor detachably mounted upon said strip ing at its ends appreciably beyond the outer walls of said radiator conduit for direct travel 20 therebelow having a fan operatively connected therewith and mounted above the strip, a ring of air into the space between the radiator con» shaped member mounted upon the closely spaced duit and said casing, and a ring-shaped member lower ends of said legs within the plane of mount mounted upon said bracket within the plane of ing of said fan and spaced slightly from the tip positioning of said fan and in position beyond the ends of said fan, an electrical heating unit outer walls of said radiator conduit. mounted upon and within the casing above said 9. In an electrical heater the combination of a casing structure having a chamber therein open fan including a radiator conduit having a pas sageway therethrough and outer walls spaced from the sides of the walls of the casing and in et including legs and a cross portion, means de tachably connecting the upper ends of said legs 30 wardly appreciably from the tip ends of the fan, to the casing, the lower ends of said legs being and an insulation disc mounted in said radiator conduit below the heating unit for protecting the spaced inwardly from the upper ends thereof and fan and motor structure against rays of heat from supporting a narrow strip at the lower ends there said heating unit. of, a motor detachably mounted upon said strip therebelow having a fan operatively connected 12. In an electrical heater the combination of a conduit-like casing having a passageway there therewith and mounted above the strip, and a ring-shaped member mounted upon the closer through open at the top and bottom thereof, a radiator unit supporting the casing passageway spaced lower ends of said legs within the plane of mounting of said fan and spaced slightly from including a conduit-like housing the external the tip ends of said fan, and an electrical heating walls of which are spaced from the inner surface unit mounted upon and within the casing above of the casing, an electrical heating unit in the conduit-like housing, a motor, means mounting said fan. at the top and bottom thereof, a U-shaped brack 10. In an electrical heater the combination of a casing structure having a chamber therein open at the top and bottom thereof, a U -shaped brack et including legs and a cross portion, means de tachably connecting the upper ends of said legs to the casing, the lower ends of said legs being spaced inwardly from the upper ends thereof and - supporting a narrow strip at the lower ends thereof, a motor detachably mounted upon said strip therebelow having a fan operatively con nected therewith and mounted above the strip, the motor upon the casing below said radiator unit conduit housing, and a ?ange operatively connected to said motor having a blade structure of a length to extend at the outer end thereof appreciably beyond the external wall surfacing of said radiator unit conduit housing for direct throw of air currents therefrom into the space between the external surface of said radiator unit conduit housing and the inner surface of the eas ing without surface de?ection into said space. ALLEN J. GARDENHOUR.