US2846997A - Wall mounted room heater - Google Patents

Description

Aug. 12, 1958 H. M. REEVES ETAL WALL MOUNTED ROOM HEATER 4 Sheets-Sheet 1 Filed'March 9, 1955 Herb eri M Eeez/s HIIIIITI'H Wimhm.

Aug. 12, 1958 H. M. REEVES ET AL 2,846,997

WALL MOUNTED ROOM HEATER Filed March 9, 1955 4 Sheets-Sheet 2 1w ll w 1 a w I 4 John; 5 Mat/ac;

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WALL MOUNTED ROOM HEATER 4 Sheets-Sheet 4 Filed March 9, 1955 I I I I I I.-

170 211, 5, Mali/6a; Herbert/14 M, WW my United States Patent 2,846,997 WALL MOUNTED ROOM HEATER Herbert M. Reeves, Kankakee,-and-John B. Mathis, Chi- -cago, 111., assignors, by mesne assignments, to Hcil- Quaker "Corporation, a corporation of Delaware Application March 9, 195$,"SeiialNo. 493,266 Claims. (Cl. 126-116) This invention relates to room heaters and has par- 'ticular reference itounvented gas -burnin heaters for'wall mounting. t

Unvented ig'as burning heaters are often employed as room heaters, sometimes being installed as permanent v=parts ofthe building structure and sometimes as free standing units. In many instances it is particularly desirable :that the unit have the advantages of being a'fiixed in zplac'ewithout requiring that it be recessed into the build- -ing wallor otherwise made a permanent part of the building structure. They :must -'in any case amply meet both safety requirements and heating specifications. It is especially desirable that the unit he attractive so as not to detract from thejr'oom furnishings as well .as require a minimum of floor space and interference with \furniture placement.

*It'is therefore aprim'ary object ofthe invention to .provvide animproved air circulating unvented gas fired room heater for mounting on a finished room wall.

-Itris armoreparticular object to .provide a room heater having a low cabinet temperature and safely-mountable -on a room wall.

Itis =anotherobject=to .provide an attractive room-heater ofan aircirculating type which minimizes floor space and .furniture arrangement problems.

It is still another object to provide an improved baflle and heating structure fora room air circulator.

.It is a .further object to provide an improved room heater for directing the mixture of heated air and products of combustion from a localized'upperportion of theheater .eabinet. V

It is also an object toprovide a wall mountable heater which is simply and inexpensively installed and maintained and which is safe and eflicient in operation.

Briefly, finzaccordance with one aspect of-my invention, .the'c ombustion chamber of agas fired heater is vertically disposed and supported by .a wall .plate. Both the wall .plate .and the heater cabinet unit for .it are shielded to permit air circulation from the bottom of the heater and up through and along thesides of-the combustion chamber. The heated gases, .i. e.,.the heated air and the products of combustion, are discharged in three zones at an upper from opening in the cabinet, these zones being respectively for the passage of the heated gases from the combustion chamber and from the frontand back surfaces of the chamber, the heater cabinet itself remaining;rlative'ly cool.v

The objects of the invention thus generally set forth, together with other objects and ancillary advantages are attained by the construction and arrangement shown by way of illustration in the accompanying drawings in which:

Figure 1 is a front view of a gas heater assembly incorpo'rating the invention with portions cut away to better illustrate the arrangement of the components.

.Fig. 2 is a side view of the assembly of Fig. 1 alsowith portions of the cabinet cut away.

Fig. '3 is "a to view of the heater of Fig. '1.

channels 9 of the backplate. has an upper 'lip 2,846,997 Patented-Aug. 12, T958 2 Figs. '4 'and 5 are perspectiveviews 'of the assembly of Fig. 1, Fig. 5 showing the Wall-plate assembly in place and Fig. 4 showing the cabinet and shield assembly remeans; and

Fig. :12 is a-siiie view of'the lower fastening means of Fig. 1 1. 4

While the invention is susceptible of various modifications I and alternative construc'tions, there is shown in the drawings and will herein he described in detail "the preferred embodiment. It is to be understood that it -is not thereby intended to limit the invention to'the form disclose'd, butit is'intended to cover all modifications, alternative constructions, and equivalents falling Within the spirit and 'scop'e of the invention as expressed 'in'the apnpended' claims.

Referring now 't'o' th'e drawings and particularly Figs. r1a'nd.2*and 4=and 5, 21 wall-mountable heater enibodying my invention may be seen -as having as one major 's'ubass'einblyja wall -plate assembly 1 (Fig 4). Major components of this assembly are the gas sup'ply and control :system :2, "the burner assembly 13, and the combustion chamber assembly 4. The other major sub-assembly isthe cabinet 5 (Fig. 5) which fits over the wall plate assembly 'and'which may 'benoted in passing as having an upper front heated air discharge opening 6 screened by agrill and a louvered lower access panel 7 at the lower air intake end of the cabinet.

arrang'ement is closely incorporated vin the structure of 'Since the heat shield both major sub-assemblies, 'it is "not generally indicated at this point='but-its"description and function will be made apparent as the description proceeds. While 'the drawings are not :made exactly to scale, an appreciation of the general dimensions may be gained therefrom, the particular'em'bodimeutdescribed inthe drawings having -'a vertical di'mensiono'f 4 feetgand beingvsuitably mounted about 6' to 12 inches above the'fioo'r on afini'shed wall of the room to he-heated.

Describing first the Wall plate assembly '1, the back ...'panel "8, suitablymade of sheet 'metaland best illustrated 50.

in- Fig. 6 is designed to be mounted directly on the room wall' and'to support'the remainder of the as'serribly. This back panel 'has two verticalrectangular channels 9 formed near the vertical side edges to stiffen -the panel. The top hanger 10, formed as a channel section with end -surfaces' '11, is spaced 's'lightly above the back p'la'te 8 so that the long horizontal islot between them can be e'n'i- --.-plo yed for placement of mounting screws at any place along the length. For ease and economy of fabrication,

this *top channel is separately formed and connected to the back plate 8 by adapterchannel sections 12 of the backplate. These channel sections are welded-on each open :end 11 of the top hanger channel 10 and 'to the The :top hang'er member 13 which is bent "back from the 'top channel edge and thus away from the wall serve as an upper cabinet support as later described.

To hold the back;plate in :place, a pair of top clamps 1 4, suitably made of -sections of bent steel are employed. The upper portion of each clamp engages the top channel 10 of the hanger and the bent lower flangeof the 'clamppresses' the edge of the back panel 8 firmly against the wall. 'The clamps are provided with apertures 15 so that they may be held by wall screws anywhere along the slot opening between the top channel and the back plate 8. The clamps may thus be screwed to the wall studs under the finished surface while still permitting some latitude in the position of the wall plate. One or more bottom clamps are similarly provided, at least one clamp 17 being screwed to the wall under the center portion of the lower edge of the back panel 8. This clamp also has an out-turned flange to serve for latching the bottom of the cabinet, as will be later described. For rigidity of the structure, an angle or channel member 18 is also welded across the bottom back panel 8 between the vertical channels 9 formed therein.

In order to support a back liner or heat shield and the combustion chamber, four outstanding brackets or tabs 19 are provided, two being welded to upper and lower positions of each vertical channel 9 at the back panel 8. These brackets have a bent-over mounting flange 20 which is suitably welded to the channels. As may be seen in Fig. 9, the tabs also have holding ears 21 and 22, the innermost ear 21 being pushed out to space a panel fitted over the tab a given distance from the back panel 8 itself. A smaller tab 23 projects from the end of the main bracket or tab 19 supporting the combustion chamber.

The back liner or heat shield 24, is generally rectangular in shape with bent-up side flanges 25. The four slots in the back liner are aligned with the tabs 19 so the back panel may be positioned over them. This panel is spaced from the wall and the wall panel 8 by the inner bracket ears 21, thus shielding the wall from excessive heating. The bracket ears 22 are bent over the back liner after it is added to the wall plate of Fig. 6 to retain the liner in place.

The combustion chamber 4 is formed of two sheet metal members, a back sheet 27 and a front sheet 28 having bent-over side flanges 29. The chamber sheet members are provided with aligned slots for receiving the smaller stepped tabs 23 of the brackets 19.

The chamber 4 is thus simply assembled, spaced from the back liner 24, and held in place by slipping the sheets 27 and 28 over the outer tabs 23 and bending the tabs over. The combustion chamber panels 27 and 28 are preferably corrugated to stiffen them so that the chamber will hold its flat, vertically elongated shape when subjected to the high temperatures of burning gases.

The upper end of the combustion chamber is open and an air chute or hood 31 is mounted at the top thereof. This hood has a forwardly curved back member 32 which is fastened at its lower end to the back sheet 27 of the combustion chamber, and has side closures 33, suitably in a form approaching a circle quadrant. The chute thus formed is narrower than the space between the side flanges of the back liner 24 so as to separate the directly heated air flowing upwardly and forwardly out of the combustion chamber from the indirectly heated air from the lateral sides and back surface of the chamber.

The burner assembly 3 suitably takes the form of a cast iron burner manifold which is elongated to present an array of gas orifices 34 just below the lower open end of the combustion chamber 4. The burner is suitably supported by a bracket 35 which is secured to the combustion chamber and a drip tray 36 is provided below the burner to protect the room floor from any falling combustion particles. A conventional air shutter 37 is provided at the burner entrance and a gas tubing section supplies gas from the supply control system 2. The latter suitably includes a temperature regulator unit 38, a safety shut-off 39, and a pilot light 40 for the burner. Obviously, of course, the fuel supply system may be varied to meet the particular economic or heating code requirements of each installation.

Reference is now made to the cabinet assembly 5 which fits over the wall-mounted assembly 1. As previously mentioned, the cabinet assembly includes at its front surface a discharge opening 6 and a lower louvered access panel 7 which, together with a center solid panel 41 forms the front surface of the cabinet. The cabinet side panels 42 have a suitably curved front portion 43 for attractiveness of the assembly, together with inner bentover rear flanges 44. A top panel 45 likewise has an attractively curved, bent-over front section 46 and an inner rear flange 47, the panels being suitably welded together to form a sturdy enclosure. No bottom panel is employed, however, in order that air may enter from the floor into the combustion chamber and along either side of it in addition to such air as enters through the louvered front panel portion 7.

Part of the liners or bafliing system of the wall heater are incorporated within the cabinet assembly 5. Thus a front liner 48 is employed, this liner extending along a central portion of the inner surface of the cabinet. Side flanges 49 extend parallel to the cabinet sides. This liner is spaced from the cabinet and shields the cabinet from direct radiation of heat energy from the combustion chamber. The upper end of the front liner or shield 48 terminates somewhat above the lower limit of the front discharge opening so that an upper portion of the chamber extends above the liner and faces the lower portion of the front opening. Side liners 50 are also extended above the front liner flanges 49, these liners being positioned at both sides of the cabinet but spaced from its side walls. A curved top shield or baffle 51 is welded or otherwise secured to the curved upper end surfaces of the liners 50 to form a second air chute having its upper surface directed outwardly near the top of the discharge opening of the front panel. An additional curved heat shield or baflie 52 prevents heated air from being trapped in the upper part of the cabinet adjacent the wall and comprises a sheet metal member fastened between the side walls of the cabinet above the curved top shield 51 with its front portion extending to top of the front discharge opening of the cabinet.

When the front cabinet 5 is installed by positioning it over the wall plate 1, the combustion chamber air chute is directed toward the central level of the discharge opening of the cabinet. The air chute 51 fastened to the cabinet is spaced above the combustion chamber chute with its lower end adjacent the rear liner 24 of the wall plate assembly 1. The lower portion of the discharge opening extends below the combustion chamber air chute 31 and somewhat below the top portion of the combustion chamber. Thus it may be seen that the directly heated mixture of air and products of combustion from the combustion chamber is directed out of a central zone of the discharge opening. The combustion chamber also acts as a heat exchanger so that air rising between the front surface 28 of the chamber and the front line: 48 of the cabinet is discharged in the lower Zone of the discharge opening. Likewise, the air rising between the back surface 27 of the combustion chamber and the bacl liner 24, together with the air along the lateral side: of the combustion chamber is directed by the chute 51 mounted on the cabinet assembly from the upper Z0111 of the discharge opening. The top baflle plate 52 pre viously mentioned minimizes sooting of the room wal which might otherwise be caused by entrapment of th air in the top of the cabinet next to the wall. The cabi net itself is not a radiator, the front and rear liner preventing the cabinet and the wall from being appre ciably heated by the combustion chamber.

For maximum control of the discharged heated ai: the upper surfaces of the air chutes 32 and 51 exten outwardly a distance beyond the discharge opening 6 an a grill for screening the opening and deflecting the a is provided. This grill is made of an expanded shei metal in which the metal web portions are at an ang' to the plane of the sheet so as to help deflectthe di: charged air downwardly. The grill is further made three sections 53 and correspond to the three heating zones previously mentioned. Each section is horizontal- -At.the same time, with the heater dimensions-mentioned,

furniture :placement near the heater is not handicapped and the heater is, of course, due to its particular arrangement, safe to touch because of its 'low cabinet temperature.

When installing the heater, the mounting screws hold the clamps of the wall plate assembly 1 and position the back plate.

The cabinet assembly 5 is then simply lifted so that the top flange 47 slips over and behind the upper inclined lip 13 of the frame hanger 10. The baflies 51 and 52 in the cabinet are self-aligning with the wall mounted assembly. The inner flanges 44 of the cabinet then rest against the wall.

To prevent the cabinet from rattling or being inadvertently opened, a bottom latch assembly is provided, this latch suitably taking the form of a rod 54 bent over an angle member 55 positioned between the sides 42 of the lower end of the cabinet. The rear end of the rod 54 is formed as a hook 56 to engage an aperture in the lower mounting bracket 17. Because the heater may not be centered on the bracket for some installations, it may be seen that the rod 54 can be simply slid along the lower frame channel 55 for alignment with the bracket 17.

We claim as our invention:

1. A wall mountable room heater comprising a wall plate assembly having a back panel mountable on a wall, upstanding support tabs vertically spaced along each vertical side of the back panel, a rear plate mountable over said support tabs and spaced from said rear panel, a combustion chamber defined by a pair of spaced metal plates closed along their vertical side edges and mountable on the ends of said tabs and spaced from said rear member, an elongated gas burner supported from said combustion chamber at the lower open end thereof, a first hood supported adjacent the top open end of the combustion chamber for directing the combustion products outwardly away from the wall plate, and a front cabinet enclosure mountable on said wall plate, said cabinet having a lower opening for admitting cool air and an upper front discharge opening through which said first hood extends for directing the heated gases rising from the combustion chamber and the heated air rising in front of the combustion chamber into the room, and a second hood extending through said discharge opening near the top thereof above the first hood.-

2. A wall mountable room heater comprising a vertical wall plate adapted to be hung on a room wall, a rear vertical shield supportingly spaced from said wall plate, means defining a vertically elongated combustion chamber having spaced front and rear vertically extending metal walls further supportingly spaced from the wall plate, said chamber being open at its upper and lower ends, a gas burner mounted at the lower chamber end, a first deflecting hood at the upper chamber end extending forwardly from the rear wall of the chamber to deflect the heated gases rising from the combustion chamber, a cabinet enclosure mountable on said Wall plate having an upper front discharge opening with a central zone aligned with said first hood to permit the outward flow of heated air from the combustion chamber, a second hood incorporated in said cabinet enclosure and positioned above the first hood and the rear vertical shield when the cabinet is mounted on the wall plate to deflect heated air rising between the rear shield and the rear combustion chamber wall to the discharge opening above the central zone, and an inner front vertical shield supportinglyspaced from the cabinet below the front opening to confine and direct the Theateda'ir rising along the front wall of the chamber until it ,passes through the discharge-openingbelowsaid-iirst hood.

3. A wall mountable room heater comprising a vertical wall .plate adapted to. be hung ona room wall, a

rear vertical shield supportingly spaced from said wall plate, means defining a vertically elongated-combustion chamber having spaced front and rear vertically extending metal walls further supportingly spaced from the wallplate, said chamber beingopen at'its upper and "lower ends, a gas 'burner mounted at the lower chamber positioned above the first hood and the rear vertical shield when the cabinet is mounted on the wall plate, said upper grill zone being aligned opposite the second hood to permit the outward flow of heated air rising between the rear shield and the rear combustion chamber wall, and an inner front vertical shield supportingly spaced from the cabinet but below the top portion of the combustion chamber, said lower grill zone having at least a portion aligned opposite the top of the front shield to facilitate the outward flow of heated air rising between the front shield and the front wall of the combustion chamber.

4. A Wall mountable room heater comprising a vertical wall plate adapted to be hung on a room wall, a rear vertical shield supportingly spaced from said wall plate, a gas burner extending for substantially the width of the vertical shield spaced from the front of the vertical shield near its lower end and supported from the wall plate, a combustion chamber comprising front and rear vertical metal plates supported from the wall plate above the burner with the rear plate thereof spaced from the rear shield to permit the passage of air therebetween, the upper end of the rear combustion chamber wall forming a forwardly extending hood, and a removable cabinet cover mountable on said wall plate having an upper front discharge opening through which the forward end of said hood extends at an intermediate level of the opening when the cabinet cover is mounted, to permit the outward flow of hot gases from the combustion chamber and heated air from the space in front of it, saidcabinet cover having a lower opening to permit the entrance of air, a deflector extending across the width of the cabinet cover and secured therein having its front portions extending slightly outwardly beyond the discharge openingnear the top thereof and extending downwardly and rearwardly to meet the top of the rear vertical shield as a hood for assuring the discharge of indirectly heated air rising between the rear combustion chamber wall and the rear shield.

5. A wall mountable room heater comprising a vertical wall plate adapted to be hung on a room wall, a rear vertical shield supportingly spaced from said wall plate, a gas burner extending for substantially the width of the vertical shield spaced from the front of the vertical shield near its lower end and supported from the wall plate, a combustion chamber comprising front and rear vertical metal plates supported from the wall plate above the burner with the rear plate thereof spaced from the rear shield to permit the passage of air therebetween, the upper end of the rear combustion chamber wall forming a forwardly extending hood, and a removable cabinet cover mountable on said wall plate having an upper front discharge opening through which the for- 7 ward end of said hood discharges heated gases from the combustion chamber and'heated air from the space in front of it when the cabinet cover is mounted, said cabinet cover having a lower opening to permit the entrance of air, and upper and lower spaced deflectors extending across the width of the cabinet cover and secured therein having their front portions near the top of the discharge opening, the upper deflector extending downwardly and rearwardly to meet the wall plate as a hood for assuring the discharge of air rising between the rear shield and the wall plate, and the lower deflector extending downwardly and rearwardly to meet the top of the rear shield to serve as a hood for assuring the discharge of air rising between the rear wall of the combustion chamber and the rear shield.

References Cited in the file of this patent UNITED STATES PATENTS 1,848,150 Becker Mar. 8, 1932 2,159,149 Hart May 23, 1939 2,476,579 Becker July 19, 1949 2,602,441 Hollingsworth et a1. July 8, 1952 2,632,435 Lundstrum Mar. 24, 1953

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