US1865924A - Cooling evaporator - Google Patents

Description

July 5. 1932. R. w. KRITZER 1,865,924

COOKING EVAPORATOR Filed Aug. 11, 1950 3 Sheets-Sheet l iiiiiill JVO/O/ 1 I o o 7 L E157. j 4 Ric&ard. M [(Hfzer INVENTOR ATTORNEYS July 5, 1932. R. w. KRITZER COOKING EVAPORATOR Filed Aug. 11, 1930 5 Sheets-Sheet 2 ill/ll iilldillioi I Richardv Wirifzer rI/IIIIIIIIIl/IFill!!! INVENTOR ATTORNEYS July 5, 1932. w KRlTzER 1,865,924

COOKING EVAPORATOR Filed Aug. 11, 1930 3 Sheets-Sheet 3 /7 /9 2/ 7 Richard mm?! L INVENTOR w/T BY M r m 7 Pg;

@ 1 ATTORNEYS Patented July 5 I932 mm smrss earner orrica RICHARD W. KRITZER, OF CHICAGO, ILLINOIS, ASSIGNOR TO PEERLESS ICE MACHINE COMPANY, OF CHICAGO, ILLINOI8 coonme- Evaromroa Application filed August 11, 1930.. Serial No. 474,438.

My invention relates to improvements in cooling evaporators, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a cooling evaporator whereby the local air as in a room or a building may be refrigerated.

A. further object is to provide a device of the type described in which a novel cooling unit is provided and constructed in such a. manner that a high degree of cooling efliciency is attained with a minimum amount of structure.

A further object is to provide a device of the type described employing novel means through which the humid warm air in a room. or a building may be passed through a. novel cooling unit and discharged into the room or building, and in which a simple and yet artistic casing isemployed for enclosing the mechanism.

A further object is to provide a device of the type described in whicha novel cooling unit is employed and constructed from a minimum number of parts which are arranged in such a manner as to re Hire a minimum amount of refrigerant li uid and for providing a maximum amount 0 surface area.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularilg pointed out in the appended claims.

y invention is illustrated in the accompanying drawings, forming part of this application, in which Figure. 1 is a side elevation of my invention, I

Figure 2 is an enlarged detail view, partly in section, of the head,

Figure 3 is a sectional detail view taken along the line 33 of. Figure 2,

Figure 4 is a sectional detail view taken substantially along the line 44 of Figure 3,

Fi ure 5 is a sectional view taken alongthe l1ne 5'-5 of Figure 3, I Figure 6 is a sectional view taken along the line 6--6 of Figure 3,

. Figure 7 is a top plan view of a portion of the cooling unit, and L FigureS is a view of the opposite end of N the structure shown in Figure 7.

In carrying out my invention, I make use of a casing comprising a head 1 having an air inlet opening 2 and an air outlet opening 3. The head may be formed integrally with a base portion 4. It will be understood, however, that while I have shown my invention in the present instance in connection with a casing of the pedestal type, other types of casings may be provided. The present casing is one which is adapted to be placed upon a floor or other similar suitable supportlng structure. The invention may of course be embodied in any suitable casing, as, for instance, one which may be suspended from a ceiling or supported upon brackets carried by a wall. In the present instance I have shown the head 1 as being formed from suitable sheet material and constructed as a separate part from the base construction 4.

The head ma be secured to the flared portion 5 of the ase by welding or riveting. The base is also formed from sheet material in the present instance. Such a construction provides a suitable casing for certain conduits which I have shown in Figures 1 and 3 and which will be more fully explained later. The openings 2 and 3 are provided with flanges 6 and 7 respectively. It will be noted in referring to Figure 3 that the flange 6 is considerably longer than the flange 7 and that the flange encloses a fan 8 associated with a motor 9. A second fan 10 associated with a motor 11 is disposed in close proximity to the opening 3. The motors may be mounted upon a supporting member 12, the ends of which are secured to the sides of a cooling unit as by welding, which I have indicated generally at 13, see Figures 2 and 3. comprises spaced-apart sections 14 and. 15. The sections are arranged to contain a refrigerant liquid and function as a single unit.

The sections 14 and 15 are identical in construction and are formed from a series of plates. In Figures 4 to 8, inclusive, I have shown the plates in detail; A pair of plates provides an assembly which may be defined as a dependin heat exchange member. In referring .to F1gures 3 and 5, it will be noted The cooling unit that each plate is provided with a plurality of grooves 16 which communicate with cross grooves 17. In referring again to Figure 5, and particularly to Figures 7 and 8, it will be seen that the grooves are formed in such a manner that when the plates are positioned together in a certain way, twice as many refrigerant passageways are provided in each depending heat exchange member as there are grooves in a single plate. The plates may be secured together by welding.

The upper end formed as at 18, see Figure 7, while the lower ends of the plates are formed as at 19, see Figure 8. Thus it will be seen that an opening 20 is provided in the upper end of each of the heat exchange members and that an opening 21 is provided in the opposite end of each of the members. These openings communicate with the grooves 16 through the medium of the cross grooves 17. Afloat chamber 22 is disposed upon the upper ends of the sections 14 and 15 and communicates with the interior of the heat exchange members through the medium of the openings 20. The float chamber may be provided with a pair of large openings 23 for communicating with the openings20 in the sections 14 and 15 of the cooling unit. The upper ends of the heat exchange members may be welded to the float chamber, whereby a rigid construction is attained. The float chamber may be provided with a relatively large opening 24 arranged to be closed by means of a cover 25, see Figure 3. The openings 21 communicate with a cross conduit 26, see Figures 2 and 4. The ends of the heat exchange members are welded to the cross conduit. It will now be seen that a'refrigerant -liquid entering the float chamber ma pass through the heat exchange members y reason of the groove 16 and that the heat exchange members are in communication with one another across the tops and the bottoms through the medium of the float chamber and the cross conduit. It will also be seen that the sections '14 and 15 are in communication with each other through the medium of the float chamber and the cross conduit.

The sections 14 and 15 may rest upon supporting plates 27, see Figure 3. These plates or lugs may be secured to the sides of the flared portion 5. The construction is such, however, that the sections may rest directly upon the flared portion, at which time the plates 27 may be dispensed with. A deflecting plate 28 is disposed between the sections 14 and 15 and secured thereto as by welding.

In referring to Figure 3, it will be noted that the plate 28 is inclined and that the plate 28 serves as a protective element for the motors 9 and 11. Any defrosting in connec-' ,tion with the float chamber which results in a dripping of any liquid from the float cham-' her will caught by the plate 28. The

of each of the plates is.

' valve mechanism liquid may then run down the sides of the sections 14 and 15. The neck of the base portion,'see Figure 3, is provided with a closure plate 29. A drainpipe 30 has one end connected with the plate. A tube 31 passes through an opening 32 in the plate and is arranged for protecting conduits 33 and 34 and wiring 35. The wiring is associated with the motors 9 and 11 for placing the latter in electrical connection with a suitable source of current. That portion of the base 4 above the plate 29 is arranged for receiving any liquid which may defrost from any part of the mechanism contained within the head. The liquid is drained away through the drainpipe 30. Should the drainpipe for any reason become clogged, an accumulation of liquid above the from damaging the contents of the tube 31 since the latter is liquid proof.

In Figure 3 I have shown the conduit 33 as being connected with the cover 25 and above the liquid inlet 36 which communicates with the conduit 34. The liquid refrigerant enters the float chamber through the conduit 34, while the refrigerant vapor within the float chamber may be drawn therefrom through the conduit 33. A suitable float 37 may be employed for controlling the amount of refrigerant liquid entering the float chamber. Various types of valves may be employed for controlling the liquid level. In Figure 1 I have shown the conduit 33 as being connected with a compressor 38. The conduit 34 is associated with a condenser 39. The latter is connected with the compressor through a suitable pipe 40. The compressor may be operated by means of a motor 41.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The fan 8 is preferably of a larger capacity than the fan 10. The fan 8 projects or pushes air through the device, while the fan 10 projects the air from the interior of the head from the latter through the opening 3. The flange 6 is arranged in such a manner that a maximum efliciency is attained. The compressor and its associated mechanism may be located within the basement of a building. The arrangement shown in Figure 1 is'merely suggestive and not intended as a limitation in any sense. The refrigerant liquid enters the float chamber from the condenser 39 through plate 29 will be prevented the conduit 34. When the sections 14 and 15 neonate entire area ofthe heat exchange members, which of course increases the transfer of the heat from the air to the heat exchange mem bers. The float chamber and the cross conduit 26 permit the refrigerant liquid to flow through the entire cooling unit. in Fig res 2 and 3 I have shown the openings 2 and 3 as being provided with a screen 42 as a pro tection in connection with the fans 8 and 10. Any suitable structure may be employed for protection against the fans and which pro-= vides a minimum obstruction for the movement of air through the head. The wiring for the motors and all oi? the pipes and their 15 connections are enclosed within the casing so that an ornamentalappearance is attained. A suitable switch may be provided for closing the circuit through the motors and positionedin any convenient place not shown. an The motors are positioned between the sections 14 and 15 in such a manner that an exceedingly compact construction is attained. It will of course be understood that any suitable means for driving theair tlirough the heat exchange elements may be used instead of the fans 9 and 11. It is equally obvious that the device of my invention is capable of functioning without theuse of any fans which are rigidly, connected or associated to with the heat exchange elements. As a matter of fact, the heat exchange elements disclosed in this application are adapted to cool the air in a room if there are any air currents capable of passing air through theheat ex- 5 change members. If desired, the ordinary fan may be used in combination with the heat exchange elements to produce such a current.

I claim 1. An evaporator element for cooling air an includin a cooling unit comprising a plurality o substantially parallel spaced-apart heat exchange members, said members being provided with bafiles upon each of their sides for deflecting air passing between the same.

es 2. An evaporator element for cooling air including a cooling unit comprising a plurality of substantially parallel spaced-apart heatexchange members, each of said heat exchange members comprising a pair of so grooved plates, the grooves in one plate being alternately arranged with respect to the grooves in its companion plate, and means communicating with said groves for operatively connecting said' heat exchange mem- 5e bers, whereby a refrigerant fluid may be passed through said members, said means comprising a float chamber provided with a valve for controlling the amount of refrigerant fluid flowing into the cooling unit. 60 Si ed at Chicago, in the county of Cook and tate of Illinois this 6th day of August, A. D. 1930. I

RICHARD W. KRITZER.

CERTIFICATE OF CORRECTION.

Patent No. 1,865.924. July 5, 1932.

RICHARD W. KRITZER.

It is hereby certified that error appears in the above numbered patent requiring correction as follows: In the heading of the drawings, title of invention, for "COOKING EVAPORATOR" read COOLING EVAPORATOR; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 25th day of October, A. D. 1932.

M. J Moore,

.(Seal) Acting Commissioner of Patents

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