Патент USA US2410211код для вставки
' Oct. 29, 1946. 2,410,211 J. J. GOUGH RORTABLE ELECTRIC HEATER Filed July 8, 1944 , 2 Sheets-Sheet 1' “ht/g ‘IN VEN TOR. BY I (lazy/0 ‘ Oct. 29, 1946. - J, J, GQUGH A _ 2,410,211 PORTABLE ELECTRIC HEATER‘ Filed July 8, 1944 2 Sheets-Sheet 2 13; a? 40 .36 40 a3= 46 INENTOR. ‘. v I ,BY 0%’ 2,410,211 Patented Oct. 29,}1946 ‘UNITED STATES PATENT ‘OFFICE PORTABLE ELECTRIC HEATER James J. Gough, Chicago, Ill._, assignor to Chicago Electric Manufacturing Company, Chicago, 111., a corporation of Illinois ‘' Application July 8, 1944, Serial No. 544,034 ' 6 Claims. (o1. 219-34) ' 1 2. The present invention relates to portable electric heaters and more particularly to port able electric room heaters of the type using both radiation and convection to distribute the heat. Previously it has been suggested to provide a portable electric heater of the radiant energy type with means for directing air which is to be connection with the accompanying drawings heated so as to obtain the advantage of dis tributing heat by convection. Particularly in the case of portable electric heaters of the radiation type, there has been the hazard of fire wherein . Figure 1 is a perspective view of a portable electric room heater constructed in accordance with the present invention; . Figure 2 is a perspective view of the radiant heat energy re?ector forming a part of the heater shown in Figure l; . Figure. 3 is a cross sectional view along the lines 3-,~3 of Figure 1,; Figure 4 is a cross sectional .view of the heater as seen along the lines 4-—4 of Figure 3; and Figure 5 he cross sectional view of the heater close to such heaters. At times articles have asseen along the line 5—5 of Figure 1, been hung up to dry and a radiant type of heater Referring to the drawings it will be seen that has been placed so as to dry the articles. In 15 there has been provided an electric heater hav such instances when the articles are placed ing an. outer casing 10 supported by a plurality rather close, they become heated by the concen of members l2 so that the bottom of the heater trated beam of energy to such an extent as to is raised from the ?oor or the surface upon burst into ?ame. In other instances of course heaters may be placed too close, to draperies and 20 whichthe heater is placed. In the upper por .tion of the housing It) there is positioned a cylin upholstered furniture. It, therefore, would be drical‘parabolic re?ector I 4 having closed ends. desirable to reduce or eliminate the possibility of The re?ector i4 is shown in detail in the per the ?re hazard heretofore encountered with spective view of Figure 2. In front of the portable electric room heaters. In accordance with the present invention the parabolic ‘re?ector l4 thereismounted a pro tective grill .IS. A cylindrical electric heating entire outer casing for the room heater is main element I8 is positioned atabout the focal point tained at a relatively low temperature and a of the parabolic re?ector H. stream of air is forced forwardly of the re?ected The parabolic re?ector I4 is provided with a radiant energy from the heater so that even if plurality of louver-like openings 20 each having the heater is used for drying apparel, there will aforwardly extending ?n portion 22 so arranged be no danger of the apparel reaching such tem that air supplied from in back of the re?ector perature when dry as to create a ?re hazard. Will be directed forwardly .in directions generally In accordance with the present invention air parallel to the re?ected radiant energy from the is drawn from adjacent the floor or the bottom heater l8. The top end.“ of the re?ector l4 of the heater and directed upwardly between the may also be provided with a plurality of open outer casing and the re?ector for the heating lugs 26 having angularly extending .?n portions element and directed outwardly through suitable 28, so that air passing through the openings will openings in the re?ector so that the air stream be directed forwardly toward the front of the will be generally parallel to the direction of the re?ected radiant energy from the heating ele 40 heater. VPreferably thev parabolic re?ector I4 is sup ment. ported by‘ thehouslng ill at the forward edge of It, therefore, is an object of the present in ,the re?ector. The remainder of the re?ector I4 vention to provide an improved portable electric is arranged in spaced apart relation with respect room heater. 45 to the sides and ,top of the outer casing in. The It is another object of the present invention re?ector l4_may have the top 24 and the bottom to provide an improved portable electric room 30 (secured to the parabolic .portion of the re heater utilizing both convection and radiation. ?ector in‘any suitablemanner although it has t is still another object of the present inven~ ‘been found relatively simple to fasten these parts tion to provide an improved portable ‘electric 50 together by a plurality of bolts 32. The heater l8 room heater which is much safer to use and extends between the upper and lower ends 24 and which materially reduces ?re hazard. , 30 of the re?ector l 4 and maybe retained in posi-. _ Other and further objects of the present in tion by. a plurality of screw members 33. Suitable vention subsequently will become apparent by electric conductors extend from the heating ele starting when in?ammable material is placed reference tothe following ‘description taken in to ment lB- to insulated binding posts 34 which in 2,410,211 ' ‘ 3 4 turn are connected to electric conductors 36 con nected to an extension cord 38 which passes cent the bottom thereof, an electric heating ele ment mounted within the upper portion of said through a suitable grommet 40 in the back of v housing, a cylindrical parabolic re?ector posi the housing I'D. tioned about said element in spaced relation to As may be seen from Figures 3 and 5 the bot 5 said housing, said re?ector being provided with tom 42 of the outer casing I0 is provided with a a plurality of generally longitudinal louver-like plurality of openings 44 so that air may be drawn air passages for discharging air parallel to the in to the interior of the housing l0 by a suitable direction of the re?ected heat rays, and an elec fan 46 driven by a motor 48 supported upon a tric fan mounted within said housing for produc cross member 50 secured to the bottom 42 by 10 ing a forced air circulation between said re?ector and said housing. bolts 52. The fan 46 preferably is arranged to operate within a cylindrical member 54 which 2. A portable electric room heater comprising serves to increase the e?iciency of the fan and an electric heating element mounted in a re to assist directing upwardly air entering through ?ector, a housing connected to the outer edges the openings 44 in the bottom 42 of the housing 15 of said re?ector and arranged in spaced relation I0. By suitable connections with the electric cord to the remainder of said re?ector, an air inlet 38 electrical energy is supplied to the electric fan for said housing, a plurality of louver-like air motor 48 which is connected in parallel with the outlets arranged in said reflector to permit pas electrical heating element l8. At the rear the sage of air from within said housing in a direction outer casing l0 may be provided with a suitable generally parallel to the direction of the heat rays handle 56 so that the heater may be readily trans re?ected by said reflector, and means for causing ported from place to place. air from said inlet to be circulated between said re?ector and said housing and to be discharged When the end of the electric cord 38 is plugged through said re?ector air passages. into an electric outlet or receptacle, energy is sup plied to the electric heating element I8 and to the 3. A portable electric room heater comprising electric fan motor 48. The fan motor 48 causes an electric heating element mounted at the focal the fan 46 to draw in air between the lower sup point of a parabolic re?ector, a housing con port members l2 through the openings 44 in the nected to the outer edges of said re?ector and bottom 42 of the outer casing Hi. The air passes arranged in spaced relation to the remainder of upwardly within the cylindrical member 54 into the reflector, an air inlet adjacent the bottom of the interior of the chamber l0 whereupon the air said housing, a plurality of louver-like air pas passes upwardly around the parabolic sides of the sages arranged in said re?ector to direct air from re?ector l4 and above the top 24 of the re?ector. . within said housing in directions generally The air is discharged through a plurality of open parallel to that of the heat rays reflected by said ings 20 and 26 in the parabolic re?ector and in re?ector, and means mounted within said housing the upper end so that air moves forwardly for causing air from said inlet to be circulated through the protective grill l6 into the room. between said re?ector and said housing and to be The punched out portions remaining as a result of discharged through the passages in said re?ector. the formation of the openings 20 are each ar 4. A portable electric room heater for heating ranged to be on the side of the opening 20 nearest 40 by radiation and convection comprising a cylin the electrical heating element l8 so as to tend to drical parabolic reflector having closed ends, a prevent the air from striking directly against the cylindrical electric heating element mounted in element l8. Each of the ?n-like portions 22 ex substantially the focal point of said re?ector, a tend forwardly so that the air moves in directions metal housing for said re?ector, said housing en gaging the forward edges of said re?ector and generally parallel to the direction of the re?ected radiant energy. Since the air is continually supporting the remainder of said re?ector in spaced relation to said housing, a plurality of moving through the inner chamber 10 the casing supports for said housing to support the bottom will never reach a temperature sufficiently high thereof in spaced relation to a surface upon as to constitute a ?re hazard. If the room heater is placed so as to be close to materials such as 50 which said heater is placed, an air inlet located adjacent said bottom to permit air to circulate draperies or clothes being dried, the continual in said housing about said reflector, and a plu movement of the air from the heater will be ralityof vertical louver-like openings spaced about sufiicient to prevent the material from acquiring the parabolic portion of said re?ector to permit a hot spot sufficient to scorch or ignite the ma terial. Furthermore the movement of the air 55 air to be discharged from inside said housing. 5. A portable electric room heater for heating through the housing I 0 cools the housing suiii by radiation and convection comprising a cylin ciently at all times so that accidental engagement drical parabolic re?ector having closed ends, a with the outer housing will not cause any injury to any person. When the heater is placed so as cylindrical electric heating element mounted at to face an individual, the action of the forced air 60 substantially the focal point of said re?ector, a distributes the heat so that only a pleasant sen sation is experienced by the individual. The air metal housing for said re?ector, said housing adjacent the upper portion thereof engaging the forward edges of said re?ector and supporting action also accelerates the more even rise of temperature in all parts of the room. 65 the remainder of said re?ector in spaced rela While for the purpose of describing and illus tion to said housing, a plurality of supports for trating the present invention a certain speci?c supporting the bottom of said housing in spaced embodiment has been disclosed, it is to be under— relation to a surface upon which said heater is stood that the invention is not to be limited placed, an air inlet located in said bottom, a thereby since obviously such variations are con templated as may be commensurate with the 70 plurality of vertical louver-like openings spaced about the parabolic portion of said re?ector, anrl spirit and scope of the invention as de?ned in an electric fan mounted within said housing ad the appended claims. jacent said bottom for circulating air within said This invention is hereby claimed as follows: housing about said re?ector and discharging said 1. A portable electric room heater comprising a closed outer housing having an air inlet adja 75 air through said louver-like openings in directions 2,410,211 substantially parallel to the re?ected radiant energy from said heating element. 6. A portable electric room heater for heating by radiation and convection comprising a cylin drical parabolic re?ector having closed ends, a cylindrical electric heating element mounted at the focal point of said re?ector, a metal housing for said re?ector, said housing engaging the for ward edges of said re?ector and supporting the 6 mounted within said housing adjacent said bot tom for causing air to circulate within said hous ing about said re?ector, and a plurality of air outlets formed in said re?ector, said air outlets being arranged in spaced relation to each other and in spaced relation to said heating element, each air outlet being formed so as to have a for wardly projecting ba?ie ?n member to prevent the air from said outlets from impinging directly remainder of said re?ector in spaced relation'to 10 upon said heating element and to cause said air to move substantially parallel to the re?ected said housing, a plurality of supports for said hous radiant energy from said heating element. ing to support the bottom thereof in spaced rela tion to a surface upon which said heater is placed, an air inlet located in said bottom, an electric fan JAMES J. GOUGH.