US2159156A - Heater attachment for ranges - Google Patents

Description

May 23, 1939. H. HONER HEATER ATTACHMENT FOR RANGES Filed Aug. 5, 1937 2 Sheets-Sheet l I r A a 1L my w V 1L 2% H H b May 23, 1939. H. HONER 2,159,155

HEATER ATTACHMENT FOR RANGES Filed Aug. 3, 1937 2 Sheets-Sheet 2 45 /88 Inventor.

5; Henry Home! Hiiorreys.

Patented May 23, 1939 UNiTED STATES PATENT OFFICE HEATER ATTACHMENT FOR RANGES Application August 3, 1937, Serial No. 157,129

13 Claims.

There have been many attempts to incorporate a heater in conjunction with a cooking range,

such being for the purpose of heating a kitchen independent of the heat derived from the range in cooking. Some of these provide for a construction of the range itself whereby this forms a housing for a gas or similar radiator. In other constructions a heater has been built into and incorporated with the range, all of which necessitates a considerable change in the design of the and a special construction making a separate range Where it is desired to have the independent heater for a kitchen.

A main object and a characteristic of my invention is that the independent heater is made attachment for the range and may be built on the back of a standard range, therefore this does not necessitate any change in the design or construction of the cooking range: and as a manufacturer as a rule does not apply the heaters to all of the ranges he manufactures, the attachment may be made as ordered. In other words, all the ranges are made complete as to the cooking equipment, a certain number of the heaters 2y likewise be constructed and these may be at- =hed to the ranges as orders are received for the omhination range and heater.

Considered more specifically, a characteristic of my invention relates to a heater preferably of a gas type which incidentally may be used either with gas or electric ranges. Such heater is made in the form of a box-like unit with the necessary devices for attaching the heater unit to the back of the range. Therefore the heater unit in the ordinary installation of the range is adjacent the wall and hence is inconspicuous but develops suificient heat and a convection flow of hot air to adequately heat the kitchen independently of whether much heat is produced by the range or not. In the modern design of ranges these are usually built so that but little heat is either radiated or disseminated in the kitchen by convection, therefore usually reliance for heating the kitchen must be placed on an independent 45 heater. Various details of the attachable heater include the box-like unit with passages for the flow of air upwardly in which one passage is deby the back of the range and one wall of the inside heater unit. Other passages are deed by the heater unit and an outside casing the back and the two ends of the heater unit.

Another characteristic and feature of my invention relates to the accessibility of the valves controlling a pilot burner and the main burner as these may be placed in the range preferably in a space used for a drawer for cooking equipment. Therefore by partly opening this drawer, the valves are readily accessible, however the pilot light at the beginning of cold Weather is usually lighted and burns uninterruptedly, this being merely used to ignite the main burner when the cock or valve supplying gas to the burner is opened. Other detail features relate to the discharge of the combustion fumes, these being carried from the auxiliary heater through a smoke pipe or the like and for sake of convenience may be discharged into a fume box Which receives the fumes from the oven and from a trash burner Where such is used. Thus only one smoke pipe is necessary.

My invention is illustrated in connection with the accompanying drawings, in which:

Fig. 1 is a perspective view of a range viewed from a front corner with the service equipment drawer removed to show the location of the valves for controlling a pilot and main burner and the gas pipes leading to such burners.

Fig. 2 is a rear elevation of the range showing the heater attachment and may be considered as taken in the direction of the arrow 2 of Fig. 4.

Fig. 3 is a vertical longitudinal section on the line 33 of Fig. 4 in the direction of the arrows.

Fig. 4 is an end elevation of the range, the heater and illustrating the fume box taken in the direction of the arrow 4 of Fig. 2.

Fig. 5 is a vertical transverse section on the line 5-5 of Fig. 3 in the direction of the arrows.

In the drawings, the cooking range is designated by the assembly numeral II. This has a front designated generally by the numeral l2, a back wall l3 which includes the back panel 14 which extends upwardly above the cooking top 15 of the range. In the front there is an opening or space it for a drawer or the like utilized for housing cooking equipment. The range may be supported in the ordinary manner on legs 17.

The auxiliary heater is designated by the as-- sembly numeral and may be considered as having an outside housing formed by the back wall .25, a closed end 21, an opposite end 28 hav ing a door opening 29 with a door 33. The other side of the heater unit is defined by the back I3, the ends being secured to this back wall of the range in any suitable manner. This leaves a boxlike construction open at the bottom indicated at 3| and having openings at the top hereinunder defined. The inside heating unit designated by the assembly numeral may be considered as having an inner longitudinal wall 36, an outer longitudinal wall 31, an end 38, an opposite end 39 which is provided with a casting 48 or the like with a window M and an ignition opening 42, this being closable by a damper cover 43. The heater proper has a closed horizontal top wall 44, this having an opening 45 from which a fume pipe 4% extends vertically. There is also a bottom wall 41, this wall having openings for the burners 48, of which two are shown (not Fig. 5), these being provided with burner tips 49.

The interior construction of the heater unit 85 includes a vertical baffle 58 extending between the walls 36 and 31 and upwardly from the bottom 4'! at the end of the burners and a horizontal lower baflle 5| leaving an opening 52 at one end. This baffle is illustrated as having an inclined section 53 and a horizontal section 54. Above this there is an intermediate baffle 55 leaving a space 56 at one end and thereabove there is an upper baffie 51, there being a space 58 at one end. This bafiie has an upturned end 59 secured at 68 to the top 44. It will be understood that these three bafiies extend between the vertical walls 38 and 31.

This construction with the air openings at the burners provides a first combustion. space 65 above the burners leading to a first lower space 88 for the passage of flames. Above this there is a lower intermediate space 61, an upper intermediate space 68 and a top space 69. The flow of the flames and the combustion gases is indicated by the arrows, the products of combustion passing outwardly through the pipe 46. The passages for the heated air include a longitudinal passage I5 between the back wall I3 of the range and. the wall 36 of the inside heating unit, the cold air entering at the open bottom 3! and beingdischarged at the long opening I6. There is also another long air passage 11 defined by the back wall 25 of the heater unit and the wall 31 of the inside heater. This also receives the cold air through the open bottom 3| and discharges it at the opening I8. At each end there is also a vertical. passage such as'I9 defined by the end wall 27 and the end 38 of the inside unit, the cold air entering at the bottom and being discharged at the opening 88 at the top. Another air space 8! is back of the end wall 28 having the door, this being normally closed and has an outlet 82 at the top. It will thus be seen that an adequate heating surface is provided for the air flowing upwardly through the various spaces and this is discharged at the top and thus disseminated through the kitchen.

Another feature of my invention relates to the convenience for lighting and controlling the heater in that a gas supply manifold indicated at 85 of Fig. 1 may be provided in the compartment E8 which as above designated is for a drawer or the like, in which cooking equipment may be stored. The pilot gas pipe 86 leads from the manifold to the pilot burner and this has a control cook 81, the gas pipe 88 to the main [burner has its own control cook 89. These pipes lead downwardly to the bottom of the range proper and are then carried rearwardly to the burners in any suitable manner. The burners and the air supply therefor are of the usual construction. It will therefore be seen that a control of the heater after igniting the pilot flame may be entirely from the front of the range, it being only necessary to open the service drawer to afford access to the valve 89.

The fume outlet pipe 46 may be readily connected to a fume box designated I88 which is part of the equipment of the range, this box being indicated as having a bottom wall I8I, a sloping top I82, opposite ends I83 and I84. It also has a vertical back wall I85 and a front wall I86. The main smoke or flue pipe I8'I takes off from the upper part of the fume box and leads to a chimney or the like. The flue pipe 46 is illustrated as entering through the bottom I8I. The particular fume box illustrated has a connection I 88 from the oven of the range or other parts of the range proper from which it is desired to conduct the fumes out of doors and there is also illustrated a connection I89 to a trash burner or the like built into the range as many ranges have this equipment. With this construction using the fume box I88 above the heater attachment, such box causes a lateral spreading of the hot air as well as functioning to carry off the fumes from the heater.

It is believed it will be therefore obvious that this heater in the form of a gas heater may be attached to a cooking range whether this is for instance a gas, electric or coal operated range. It is also obvious that for conditions in which electric current is comparatively inexpensive, an

electric heating unit could be substituted for the gas and built in as an attachment on the back of the range.

Various changes may be made in the details of the construction without departing from the spirit or scope of the invention as defined by the appended claims.

I claim:

1. A cooking range having a back wall combined with a heater assembly, said assembly having a back wall spaced from the back wall of the range by two vertical end walls, said end walls being attached to the back wall of the range, an inside heating unit having inner and outer walls parallel to the back wall of the range and two end walls and having a bottom and a top with a fume pipe connected to the top and having a heating unit in the bottom, there being a space between the inner wall of the inside heater and the back wall of the range, a second space between the outer wall of the inside heater and the back wall of the heater assembly and two end spaces adjacent the end walls of the inside heater, said spaces being adapted for the upflow of air heated by the inside heater.

2. A cooking range as claimed in claim 1, the inside heater having as a heating unit gas burners with spaces for the inflow of air, a series of baffle plates connecting the inner and outer walls of the inside heater and providing end spaces to develop a zig-zag path for the products of combustion from the burner to the fume pipe.

3. A cooking range as claimed in claim 1, the range having a space opening from the front with a gas pipe having a valve, the valve being located in the said space, the heater unit having a gas burner and the said pipe communicating with said burner.

4. In a device as described, an auxiliary heater having a housing with a back and two end walls and open at the bottom and top, an inside heating unithaving inner and outer walls spaced apart and also spaced from the back wall of the housing, the housing and inside heater having means for attachment to the imperforate back wall of a cooking range and thereby provide a first space between the heater unit and such back wall and a second space between the heater unit and the imperforate back wall of the housing for upflow of heated air.

5. In a device as described and claimed in claim 4, the inside heater unit having two end walls spaced from the end walls of the housing having a closed bottom except for a gas burner with an air inlet and being provided with a closed top with a fume pipe, there being spaces for upflow of heated air between the ends of the heater unit and the ends of the housing.

6. In a device as described, an auxiliary heater having a housing with a vertical. backwall and vertical end walls open at the top and bottom, the end walls being adapted for attachment to the back Wall of a cooking range, an inside heat er unit having inner and outer walls spaced apart and parallel to the back wall of the housing but spaced therefrom, the heater unit also having vertical end walls spaced inwardly from the end walls of the housing having a closed top with a fume pipe and a closed bottom except for gas burners with an air inlet whereby spaces for upflow of heated air are provided between the heater unit and the walls of the housing and between the heater unit and the imperforate back wall of a cooking range to which the heater unit is attached.

'7. A cooking range having a back wall, a fume box positioned back of the said back wall and spaced therefrom with connections to remove fumes from the range and an outlet or discharge fiue pipe combined with an auxiliary heater having an outer casing and inner heating unit, the casing having means for attachment to the back of the range and positioned below the fume box, a heater element in the unit, the casing and the unit providing a space for the upflow of air to be heated, one of said spaces being between the back wall of the range and the heating unit, the space between the fume box and the back wall of the range being adapted for the upflow of the heated air from said latter space, the fume box forming a deflecting medium for the hot air from the other spaces.

8. A cooking range having a back wall, a fume box positioned back of said wall and spaced therefrom with connections to remove fumes from the range and an outlet or discharge flue pipe combined with an auxiliary heater, said heater having a housing with a back Wall parallel to the back of the range and two side walls connected to the back wall of the range, an inside heater having sides spaced apart in parallel to the back of the housing and to the back of the range and having end walls spaced from the end walls of the housing, thereby providing spaces for upflow of air, one of said spaces being defined by the back wall of the range and one of the walls of the heater, the heater having a flue pipe extending into the fume box, the space between the fume box and the back wall of the range being adapted for upward flow of hot air, the fume box being positioned relative to the heater to deflect the air laterally flowing upwardly through the other spaces or passages.

9. A cooking range having a back wall and an open space from the front adapted to receive a drawer or the like combined with an auxiliary gas heater attached to the back wall of the range with gas pipes secured to the range and having valves positioned in the said space whereby said valves may be readily accessible from the front of the range.

10. A cooking range having a cooking top and an imperforate back wall extending downwardly from the rear edge of the cooking top combined with a heater assembly, said assembly having an internal heater with walls and surrounding casing walls defining between the casing Walls and the internal heater passages for air to be heated, one of said passages being defined by the internal heater and the imperforate back wall of the range.

11. A cooking range as claimed in claim 10, the internal heater having a gas burner adjacent the bottom and a fume pipe at the top, the range having a fume box positioned back of the back wall and having a smoke outlet, the said fume pipe entering the said fume box.

12. A cooking range having a cooking top and an imperforate back wall extending downwardly from the rear edge of the cooking top combined with a heater attachment, said attachment having a casing structure attached to the said back wall and open at the bottom and top, an internal heater located within the casing structure and provided with a gas heating element in the bottom with a fume outlet at the top, there being spaces between the internal heater and the easing structure for the upflow of heated air and a space between the imperforate back wall of the range and the internal heater for the upflow of heated air.

13, A cooking range as claimed in claim 12, the range having a fume box positioned back of the back wall of the range and spaced therefrom and having fume connections from an oven and smoke connections from a trash burner and with a smoke or flue pipe outlet at the top, the fume pipe of the heater being connected to and discharging into the said fume box.

HENRY HONER.

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