US2368392A - Car heater and defroster - Google Patents

Description

jan. 3G, H945, F, M. YOUNG 936,392

CAR HEATER AND DEFROSTER Filed Feb. 8, 1943 4 Sheets-Sheet l IN VEN TOR.

Han 3G w45 F. M. YOUNG Zg CAR HEATER AND DEFRSTER Filed Feb. s, 1945 v 4 sheets-sheet 2 IN VEN TOR. 45 Feoz UNG ATTORNEY Jan., 30, 1945. F. M. YOUNG 35,392

CAR HEATER AND DEFROSTER Filedreb. 8, 1943 4 sheets-sheet 3 E /F/Q 6 r" I JNVENToR. i FEE@ M. Vom/6 f7@ g BY.

Jam. 30, 1945. F, M, YOUNG I 36,392

CAR HEATER AND DEFROSTER Filed Feb. 8, 1943 4 Sheets-Sheet 4 9 50 HG. Q

. F/: J0 f W INVENTOR. HG 4.5

A?" 70e Hav n Patented Jan. 30, 1945 y UNITEDA STATES PATENTl omer.

assassz can naam AND DEFRos'rEa Fred 1v1-.Young mine. wis.

Application February 8, 1943, Serial No. 475,134

3 Claims.

A further object of my invention is to provide` means whereby'the low pressure large volume fan will discharge thev air in the inclosure and the high pressure fan will discharge the air in one or two ducts, one duct being adapted to conduct heated air to the windshield and the other being adapted to conduct the air to some remote point in the inclosure.

A still further objectl of my invention is to provide a heater whereby the capacity of the cage type fan may be arra'nged to discharge a predetermined portion of the total volume of thev air drawn through the core.

Another object of the present invention is to provide a heater of the class described which is efcient, simple, light, neat in appearance and easily manufactured at low cost.

The above recited objects are accomplished by means of parts, combinations of parts, or their equivalents, and mode of operation, as hereinafter set forth and claimed and shown in the accompanying drawings in which:

Fig. 1 is a transverse sectional view of my improved device taken on line I-I of Figure 2.

Fig. 2 is a sectional view of the device taken on line 2 2 of Figure 1.

Fig. 3 is a front elevational view of the heat exchange core used in my device as shown in Figure 1.

Fig. 4 is a sectional view of the device shown in Figure 3, taken on line 4-4 of this figure.

Fig. 5 is afront view of my device illustrating two outlets on the cage type fan.

Fig. 6 is a transverse sectional view of a modication.

Fig. 7 is a sectional view taken on line 1--1 of Figure 6.

Fig. 8 is a front view of the core used in the design shown in Figure 6.

Fig. 9 is a sectional view taken on line 9-9 of Figure 8.

Fig. 10 is a sectional view taken on line IO-IU of Figure 8.

Fig. 11 is a front view of the device shown in Figures 6 and '7 wherein both of the cage fan outlets are shown as used for warming the windshield.

Fig. 12 illustrates fractionally a further modiflcation.

As illustrated in Figures 1 through 5, the core,

which 'in its entirety is designated by reference character A, comprises two annular units (see Figures 1 and 4) each comprising two headers II-II and I2-I2 having tubes I3 forming operating connections therebetween. The tubes are provided with closely spaced fins Il. Headers II are provided with inlet or outlet connections I5-I5 and headers I2 are provided with inlet or outlet connections I6-I6. These connections may extend rearwardly through the cowl board I1 of the vehicle.

Headers II and I2 are turned en'ough so the I connections are spaced and so one core may be served by one cylinder block of a V-8 engine and the other core by the other block of the engine (see Figure 3) or when served by a straight line engine, adjacent tubes can be.connected together for the purpose.

I provide a motor, which in its entirety is designated by reference character B and position the motor concentrically within the core as illustrated. Closely spaced annular members IB-IS are positioned as shown in Figure l, these members being separated by sleeves I9.

I provide a front annular plate 20 having a forwardly turned ilange 2l adapted to answer as a shroud for the impeller fan blades. The fan, in its entirety, is designated by reference character C. I provide a rear annular plate 22. Plates I8, 20 and 22 extend past the outer edge of cores A and have openings through which spaced bolts 23 extend.

AtA the forward end of the device and attached in any suitable manner to plate 2li, I provide a forwardly and then inwardly extending member 24 having an opening about the inside diameter of member 2l and in this opening, I preferably provide an air deflector member 25 having a number of air directing blades 2B. Deflector 25 ts in the rear of the opening in member 24 and is concentrically held by means of spaced bolts 21 which extend through anv annular ring 28, these bolts having Springs 29 and nuts 30 so member 25 may beturned and held in any desired position.

Members I8 are provided with forwardly and rearwardly extending flanges 35-35, their outer edges extending parallel to and in juxtaposition with a number of spaced projections 3'6 and being secured to these projections by means of washers 31 and bolts 38.

Washers 31 are preferably made from synthetic rubber and designed so there is no metallic contact between the flanges and motor; thus to absorb the noise set up by the vibration of the motor and fans. I provide a rear plate 39 through which bolts 23 extend.

An outer housing wall 42 is provided which answers as a spacer between members 22 and 39 and is shaped as illustrated in Figure 2 having outlets 43-43. The entire assembly is held together by means of bolts 23 and nuts 4|, the bolts extending rearwardly through the cowl board l1. A disc member 44 is provided with a suitable hub which is secured to the rear end of the motor shaft having preferably the shape shown in Figure 1. On the outer periphery of this member I mount. a suitable number of blades 45.

Members 45 on their forward edges are secured to an annular plate 46; thus to form a cage type fan which in its entirety is designated by reference character D. Fan C is shown superimposed by dotted lines in Figure 2. It will be seen that cage type fan D and impeller fan C will create a partial vacuum within the core and cause the air to move in the direction indicated by double pointed arrows in Figure 1, discharging the air forwardly through member 25 charge the air at a greater pressure and velocity than fan C and in the design shown in Figure 1, the two fans will discharge about an equal volume of air.

The air from one of outlets 43 will generally be sufficient for warming the windshield and the other outlet 43 may be connected to a duct which extends t the rear of the inclosure or in any other desired place in the vehicle.

It will be seen that with my improved heater, a low volume of air may be discharged directly into the inclosure the same as with the conventional car heater and a special fan is provided for high pressure so the air may be discharged as above recited.

In Figures 6 through 11 I illustrate a modification wherein similar parts are designated by identical reference characters and numerals. In this modication there is but a single core comprising two headers 50-50 which are operatively connected together by means of tubes l, preferably two rows deep and three rows longitudinally and having closely spaced ns 52. In this design, the inlet and outlet tubes .53--51'2l extend rearwardly through members 22 and 54 in the position illustrated in Figure '7, member 54 acting as the rearside inclosure for the fan similar to member 39 in Figure 1. The motor of this modiiication is designated in its entirety by reference character E. The front of this motor and the core are provided with parts which are similar to that shown in Figure 1.

An annular plate 55 is provided having a forwardly turned ange 56 on its inner edge to which a tube 51 is secured as illustrated, the tube being secured at spaced intervals to motor E by means of washers 58 and bolts 59.

I provide a disc 60 having a suitable hub for connection to the rear end of the motor shaft as illustrated and mount on the outer periphery of this member spaced blades 4,5 which are secured to member 60 and to annular ring 46 forming the rotor of `a cage type fan.

In this modification, bolts 6I extend through the cowl board of the vehicle and through the side plates of the cage type fan as in Figure 1 and having nuts 4| so the entire assembly may be held together and to the cowl board l1 of'the vehicle.

Plate 55 is provided with a number of openings 63 providing a passageway for the heated air into the cage type fan and plate 60 is provided with a number of relatively small openings 64 providing means whereby a small volume of cool air may pass forwardly around the motor as indicated by single pointed arrows; thus to cool motor E similar to the cooled air which moves inwardly between plates I8 in Figure 1 for cooling motor B.

In Figure 12 I illustrate fractionally a further modification wherein motor E is secured to headers 50-50 by means of two brackets 65-'65 (one not shown). Brackets 65 are secured to the headers by means of brackets 66 by bonding or otherwise. In other respects, this structure is similar to that shown in Figures 6 and 7. In this design, the cage type fan may be made considerably wider than that shown in the other figures and the housing made similar to housing 42 except it may be wider. Clearly in this design, more of the heated air is available to warm the windshield and heat the car inclosure. One of the outlets of the cage type fan is similar to that shown on the right side of Figure 5.

It will be seen that the motor illustrated in Figures 1 and 6 will be cooled by outside air, that a large volume of heated air at low pressure may be discharged forwardly from the unit and that any desired volume of heated air at high pressure can be discharged from the cage type fan.

Having thus shown and described my invention, I claim:

1. A device of the character described, comprising an annular heat exchange core, a motor positioned concentrically within the core and substantially midway the ends thereof, an impeller fan secured to the shaft of said motor at one endI and a cage type fan secured to said shaft at the other end and means whereby air will be drawn radially inwardly through the core by said fans conjointly, said cage type fan having a housing with one or more outlets whereby the air discharged therefrom may be directed to the windshield and to a remote point from the fan, said motor being supported by the core and having means whereby a, relatively small volume of air will be caused to pass around the motor without direct contact with the fins of the core.

2. A device as recited in claim 1 including; said core comprising closely spaced front and rear units, said motor support comprising spaced annular plates positioned between the core units and having on their inner edges oppositely and outwardly extending funnel shaped extensions which terminate adjacent the motor and being secured thereto by means of spaced bolts and washers whereby outside air will be caused to pass around the motor forwardly and rearwardly and in contact thereto and without contact with the iins of said cores.

3. A device as recited in claim 1 including; said motor support comprising an annular plate being secured to the rear of said core, a tube secured to said annular plate and extending inwardly and around said motor leaving a narrow air passageway therebetween and being secured to the motor by means of spaced fastenings, the blades of said cage type fan having an inner diameter equal to or greater than the inner diameter of the core and being carried by a disc which is secured to the shaft of the motor, openings in said disc positioned within the inside diameter of said tube, the end of said tube positioned very close to said disc whereby outside air will pass between said tube and motor.

m FRED M. YOUNG.

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