US2304570A - Cabinet heater - Google Patents

Description

A. R. JAIN CABINET HEATER Dec. 8, 1942.

Filed Jan. 8, 1941 INVENTOR. BY fiZI H K J /m flrr N5??? Patented Dec. 8, 1942 CABINET HEATER Alva R. Jain, Kokomo, Ind., assignor to Globe American Corporation, Kokomo, Ind., a corporation Applicatlon January 8, 1941, Serial No. 373,645 Claims. (01. 126-116) This invention relates to a cabinet heater. In the use of cabinet heaters of the coal, wood or oil burning type, the heated air ordinarily rises directly from the heater to the upper part of the room, leaving a relatively cold zone near the floor. In order to provide a more even distribution of heat through the room, some means of discharging heated air from the heater at ornear the floor level is desirable. Such means must be readily accessible for service, cleaning and repairs and, if it includes an electric motor, it should be so arranged that the motor is not in direct contact with a stream of hot air and may be suitably ventilated.

One object of the present invention is to provide a construction for a cabinet heater in which a motor driven fan draws air downwardly from an air inlet opening adjacent the top of the heater cabinet and discharges the same at the floor level.

Another object of the invention is to provlde ready accessibility in a unit of this type.

Another object of the invention is to provide for suitable ventilation of the motor and protection of the motor against contact with the stream of the heated air.

These objects and others are attained by the construction more particularly described hereinafter. In its preferred form, this construction provides a service opening adjacent the lower portion of one side of the heater, a closure for the opening and a motor and fan so mounted on the closure that they may be withdrawn with the closure as a unit. In addition, there is provided an arrangement of partitions, parts of which are mounted on the closure and are removable therewith, said partitions providing the necessary protection for the motor and providing baflles in the interior of the cabinet to confine the stream of air for proper delivery to and exit from the fan.

Other objects and features of the invention will be understood from the accompanying drawing and the following description and claims:

Fig. l is a sectional view in elevation through a cabinet heater constructed in accordance with a preferred form of the invention, the section being taken substantially on line of Figs. 2 and 4. Fig. 2 is a sectional view taken substantially on the line 2-2 of Fig. 1. Fig. 3 is a rear view of the lower portion of thecabinet showing the service opening with the closure and associated parts removed. Fig. 4 is a plan view of the 010- sure and associated parts. Fig. 5 is a rear view of the same. Fig. 6 isa sectional view in elevation taken substantially on the line 6-6 of Fig. 4.

Referring particularly to the drawing in which there is disclosed, by way of illustration, a preferred form of the invention, a heater I0 is enclosed within a cabinet The heater may be of any well known form burning coal, wood, oil or other suitable fuel. The cabinet H is provided with air inlet openings |2 at the top thereof and with air outlet openings l3 adjacent the lower portions of one or more of the walls thereof. The rear wall H of the cabinet is provided with a service opening l5 as best seen in Fig. 3.

-Within the cabinet Hi there is provided a horizcntal partial partition plate |6, the shape of which is best seen in Fig. 2. Said partition plate is provided with an opening having a half round portion l1 and a substantially straight portion bounded by the edges l8 of said plate. Guide members I9 are provided suitably spaced above the edges |8 of said plate. A closure plate 20 slightly larger than the service opening I5 is provided and on said plate there is mounted a partial partition plate 2|, the edges of which are adapted to slide in guideways between the plate l6 and guide members IS. The plate 2| has one edge 22 formed in a half round shape and adapted to mate with the portions ll of plate |6 to form a circular fan opening. The plates l6 and 2| together form a partition dividing the cabinet into an upper chamber 23 in which the heater I0 is located and a lower chamber 24 communicating with the air outlet openings l3. The only communication between said chambers is through the fan opening bounded by the edges l1 and 22.

Within the chamber 24 there is provided a box-like structure having vertical side walls 25 supported on the bottom plate 26' of the cabinet and having a rear wall 26 similarly supported. The side walls 25 extend rearwardly to the service opening l5 and thus the rear portion of said structure is in communication with said opening. The upper edges of the walls 25 and 26 carry guideways' 21 adapted to receive the edges of a plate 28 supported on the closure member 20. Said plate is of the proper shape and size to form 'with the structure 25-26 a motor chamber. 29 which has no communication with the chamber 24 but which communicates with the service opening I5. An opening 30 in the plate 20 (Fig. 5) provides for ventilation of said motor chamber. An electric motor 3| is mounted on the undersurface of the plate 26 and is normally within the motor chamber when the closure member 20 and associated parts are in place. A fan 32 is driven by said motor and is positioned above the plate 28 substantially at the level of the partition plates l6 and 2| and within the fan opening formed between portions l1 and 22 of said plates. A motor switch 33 is mounted on the plate 20 and suitable connections including a cord 34 and plug 35 are provided for connecting the motor to a suitable source of power such as a lighting outlet and for control of the motor by said switch.

From the above description it will be apparent that the fan 32 may be operated to draw air downwardly through the openings [2, about the heater Ill, through the fan opening and thence outwardly through the openings l3 at substantially floor level. A much more even distribution of heat in the room to be heated is thus obtained.

The provision of the partition formed by the plates l6 and 2| confines the stream of air to the area over which the fan blades are efiective and prevents recirculation of air within the cabinet. The provision of the motor chamber 29 closed from the chamber 24 and open for ventilation through the closure plate 30 insures against over heating of the motor. For service and repairs the closure plate 20 may be withdrawn carrying with it the motor, fan and the two plates 2| and 28 secured to said closure member. The shape of the opening in plate It bounded by the edge I! insures that the fan may be drawn directly outward without interference. The provision of the guideways l9 and 21 provides a convenient means for supporting the movable structure when in place and during removal and replacement.

The invention has been described in one of its preferred forms, the details of which maybe varied without departing from the.scope thereof as defined in the appended claims.

The invention claimed is: 1. In a cabinet heater having a heater unit, and a cabinet surrounding said unit and having an air inlet opening in its upper portion, air outlet openings in its lower portion and a service opening in the lower portion of one wall thereof, the sub-combination of a closure for said service opening, a pair of mating plates together forming a substantially horizontal partition dividing said cabinet into an upper chamber in which said heater is located and a lower chamber communicating with said air outlet openings, one of said plates being secured to said cabinet and the other being secured to said closure, and the partition formed thereby having a fan opening therein, and a fan mounted on said closure and positioned in said fan opening when said closure is in place, said closure, said fan and the plate secured to said closure being removable as a unit.

2. In a cabinet heater having a heating unit, and a cabinet surrounding said unit and having an air inlet opening in its upper portion, air outlet openings in its lower portion and a service opening in the lower portion of one wall thereof, the sub-combination of a closure for said service opening, a pair of mating plates together forming a substantially horizontal partition dividing said cabinet into an upper chamber in which said heater is located and a lower chamber communicating with said air outlet openings, one of said plates being secured to said cabinet and the other being secured to said closure and the partition formed thereby having a fan opening therein, means in said lower chamber forming a box-like structure open at the top and open to said service opening at one side, a third plate secured to said closure and adapted to close the top of said structure and to form therewith a motor chamber out of communication with said lower chamber, a motor mounted on the underside of said third plate and normally within said motor chamber, and a ran driven by said motor and sure, motor, fan and the two plates secured to said closure being removable as a unit.

3. In a cabinet heater having a-heating unit,

and a cabinet surrounding said unit and having an air inlet opening in-its upper portion, air outlet openings in its lower portion and a service opening in the lower portion of one wall thereof, the sub-combination of a closure for said service opening, a pair of mating plates together forming a substantially horizontal partition dividing said structure and to form therewith a motor chamber out of communication with said lower chamber, a motor mounted on the underside of said third plate and normally within said motor chamber, a fan driven by said motor and normally positioned in said fan opening, said closure, motor, fan and the two plates secured to said closure being removable as a unit, and said closure having a ventilating opening communicating with said motor chamber.

4. In a cabinet heater having a heating unit, and a cabinet surrounding said unit and having an air inlet opening in its upper portion, air outlet openings in its lower portion and a service opening in the lower portion of one wall thereof, the sub-combination of a fan supported on said closure and normally positioned beneath said heating unit, a partial partition plate secured to said cabinet in a horizontal position substantiaL ly at the level of-said fan and having an opening therein of sufiicient size to permit withdrawal of said fan horizontally through said service opening, a second partial partition plate secured to said closure and mating with said first plate to close the opening therein except for a fan opening immediately surrounding said fan, said partition plates together forming a partition dividing said cabinet into an upper chamber in which said heating unit is located and a lower chamber communicating with said air outlet openings.

5. In a cabinet heater having a heating unit, and a cabinet surrounding said unit and having an air inlet opening in its upper portion, air outlet openings in its lower portion and a service opening in the lower portion of one wall thereof, the sub-combination of a fan supported on said closure and normally positioned beneath said heating unit, a partial partition plate secured to said cabinet in a horizontal position substantially at the level of said fan and having an opening therein of sufllcient size to permit withdrawal of said fan horizontally through said service opening, a second partial partition plate secured to said closure and mating with said first plate to close the opening therein except for a fan opening immediately surrounding said tan, said partition plates together forming a partition dividing said cabinet into an upper chamber in which said heating unit is located and a lower chamber communicating with said air outlet openings, and

said second plate being slidable in guideways formed on said first plate.

- ALVA R. JAIN.

normally positioned in said fan opening; ma clo- 7s

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