US1789984A - Refrigerating means for precooling and cold-storage rooms - Google Patents

Description

Jan. 27, 1931. c, MOORE v1,789,984-

REFRIGERATING MEANS FOR PRECOOLING AND COLD STORAGE ROOMS Original File g- 1924 2 Sheets-Sheet 1 j v J3 6 I72)? far 1 67247165 i 1100 c. A MOORE Jan. 27, 1931.

REFRIGERATING MEANS FOR PREGOOLING AND COLD STORAGE ROOMS original Filed Aug. 15. 1924 2 Sheets-$heet 2 u a M Patented Jam 27, 1931 UNITED STATES CHARLES A. MOORE, OF EDINA, MINNESOTA REFRIGERATING MEANS FOR PR-ECOOLING AND COLD-STORAGE ROOMS Application filed August 15, 1924, Serial No. 732,344. Renewed September 17, 1928.

My invention relates to improvements in refrigerating means, particularly, though not exclusively, for pre-cooling and cold storage rooms, the same being adapted to provide for refrigerated internal circulation and refrigerated ventilation, or a combination of the two, by gravity alone, or, by gravity in com bination with force.

An object of the invention is to supply refrigerating means of the present nature, the same being simple and relatively inexpensive in construction and constituting acombination of elements arranged to function etliciently and economically.

vide improved means arranged to set up a natural movement of air, by gravity, within a room, whereby refrigerated internal circulation, refrigerated ventilation or a combination of both is effected within the room,

said means including a blower for stimulating the natural movement of air under said noted conditions.

\Vith the foregoing and other objects in view, which will appear inthe following de- SCIlptlOll, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, Fig. 1 is a plan view of a structure embodying my invention, the same being illustrated as installed in a room; Fig. 2 is a vertical, longitudinal, central sectional view thereof taken as on the line 2-2 of Fig. 1; Fig. 3 is a vertical sectional view taken transversely of Fig. 1 as on the line 3-3 thereof and Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2.

Referring to the drawings, wherein similar characters of reference are employed throughout the several views to designate similar parts, it will be observed that my improvement embodies a refrigerating unit A, main ducts 10, 11 and branch- ducts 10, 11, said parts being assembled in the upper portion of a room B. The refrigerating unit A includes banked coils of pipe 12 for a refrigerating medium are hung within side and end bafliing walls a, a suitably suspended as by means of hangers 13 from the ceiling Another object of the invention is to pro- 14 of the room B. The lower reaches of these pipes 12 have troughs 1.4 suspended there-- beneath and emptying into gutters 15 carried at the inner, lower margins of the bafliing walls a, a. Said walls a, a are spaced within the sides and ends of the room B and beneath the ceiling 14 thereof, and the pipe structure therein has a central port a opening downward therethrough and extending from end to end of the unit A. With a refrigerating medium flowing through the pipes 12, the air about said pipes is chilled and, in such condition, gravitates through the unit A to the floor 16 of the room B. VVarmed at the walls 17 of the room, the air rises between said walls and the walls a, a of the unit A to the ceiling 14 of the room at which level the cycle through the room is again inaugurated.

The ducts 10, 11 are suspended from the ceiling 14 of the room by suitablehangers,

through the port 10", the duct 11 being likewise open to the room through the port 11 and at a level, considerably beneath that of the port 10*, but directly over and near the top of the port a in the unit A. At one end of the duct structure, said ducts 10, 11 are formed with registering openings, one in the bottom of the upper duct 10 and one in the top of the lower duct 11, said openings constituting a passageway 19 between said ducts 10, 11.

A damper 20, located within the duct 10, i

is hinged to swing-into and out of position obstructing said passageway 19. At the end of the duct structure at which the ducts 10, 11 are connected through the passageway 19 are the two branch-ducts 10 11, the former extending from the duct 10 through the wall 17 of the room B into. the outer atmosphere 35 This same condition exists, without a directly active skimming-off of air in the uppermost 11 and over the port 11 therein.

and the latter extending from the duct 11 and likewise into the outer atmosphere. These branch- ducts 10, 11 are respectively fitted with dampers 21, 22. Within the duct 11 is a fan or blower 23, which is arranged to take air from the branch-duct 11*, or the duct 10 through the passageway 19, or both, and force it through the duct 11 and out of the port 11 therein. To equalize the volume ofair expelled from the port 11 at different points in the length thereof, I provide a simple adjustable valve, the same comp-rising a baflie strip 24 arranged, within the duct This baflie strip 24 is hinged to the inner face of the bottom of the duct 11 at the end thereof containing the fan 23. Operating beneath the free end of the baffle strip 24: is an adjusting screw 25 for said strip 24. This screw 25, threaded in a bearing 26 hung beneath the duct 11, engages the underside of said strip 24 at its upper end, the lower end' of said screw having a handle 25 thereon for turning the same. a

In use, and with the fan 23 idle, the damper 20 open and the dampers 21, 22 closed, the cycle of air in the room is carried out, in part, through the ducts 10, 11, air in the duct 11, supplied from the duct 10 passing down wardly into the refrigerating unit A through the port 11", said duct 10 being replenished with air through the port 1O at the upper portion of the room. Thus functioning the structure provides for refrigerated circulation ofair within the room, by gravity.

is caused to descend between the baffles a and the adjacent banks of coils of the unit A.

Thus it may be-understood. that, in either case, the air is refrigerated and caused by gravity to effect an internal, convective and diffused circulation within the room. The opening of the dampers 20, 21 and 22 results in mixed refrigerated circulation and venti-.

lation, while the closing of the damper 20 resolves -such condition more especially into that of refrigerated ventilation. The operation of the fan 23 stimulates the movement of the air through its natural course under each of the conditions above noted, the-screw 25 being adjusted to graduate the opening of the port 11 through the medium of the baffle strip 24 and in accordance with the-regulated capacity ofthe fan23. p l

Changes in the specific form of my invention, as herein disclosed, may be made within the scopeof what is claimed without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is: Y

1. The combination with a room of a refrigerating element in the room, said element having a central, longitudinal port for the passage of air downwardly therethrough, a duct structure disposed above the refrigerating element and over said port, said structure embodying a pair of ducts, one apertnred and communicating with the interior of the room near the ceiling and the second apertured and communicating with the room at a lower level, but above the port in the refrigerating element, said ducts at one end of the duct structure having a valved passageway between them bringing the first duct into communication with the latter, a pair of branch-ducts at said end of the duct structure, one leading from said first duct into the outer air, and having a valve therein, the second branch-duct leading from the outer air to'said second duct and also having a valve therein, and a fan within said second duct being adapted to set up an ingress of air to the room through the second mentioned branch-duct and duct and the egress of air therefrom through the first mentioned duct andbranch-duct.

2. The combination with a room of a refrigerating element in the room, a duct structure above said element comprising a pair of ducts, one communicating with the other at one end of the duct structure, and each having independent valved communication with the outer air at said end'of said structure, one of said ducts being apertured to receive air from the room at a level near the ceiling and the other of said ducts apertured to discharge air into the room at a lower elevation, but above said refrigerating element, and a fan in said latter duct arranged as and for the purposes described.

3. The combination with a room of a refrigerating element in the room, a duct structure above said element comprising a suction duct and an exhaustduct, the two being in communication with each other, the former providing for the ingress thereto of air I from the room along the ceiling thereof over said refrigerating element and the latter providing for the downward egress of air into the room at a lower level, and a fan associated with said ducts for setting up a suction in the suction duct and air exhausting pressure in the exhaust duct.

4. The combination with a room of a refrigerating element within the room, a duct structure including a pair of ducts above said element, one duct communicating with the I egress of air from end to end of the second duct above said refrigerating element and at a level beneath the level of ingress of air to said first duct.

5. The combination with a room of an overhead refrigerating element for said room extending lengthwise of the room and spaced from the sides thereof, said refrigerating element having an elongated port lengthwise thereof opening downwardly therethrough, a duct structure over said port extending lengthwise thereof and comprising a pair of superimposed ducts, the upper duct being .clear of the ceiling and having an elongated port in the top side thereof for the ingress therethrough of air from the room, the lower duct having an elongated egress duct in its under side, each of said ducts having valved communication with the outer atmosphere.

6. The combination with a room of an overhead refrigerating element arranged centrally and longitudinally thereof, a duct structure over'said element arranged centrally and longitudinally of the same, said structure comprising a pair of ducts, one communicating therealong with the interior of the room near the ceiling thereof and the other communicating therealong with the interior of the room at a lower level, said ducts having independent valved communication with the outer atmosphere.

7. The combination with a room of an overhead refrigerating element arranged centrally and longitudinally thereof, a duct structure over said element arranged centrally and longitudinally of the same, said structure comprisinga pair of ducts, one communicating therealong with the interior of the room near the ceiling thereof and the other con'imunicating therealong with the interior of the room at a lower level, said ducts being in valved communication with each other and having independent valved communication with the outer atmosphere.

8. The combination with a room of a refrigerating element therein spaced from the ceiling, Walls and floor of the room, and having a vertical passageway therethrough. a duct having an opening at a position adjacent the ceiling of the room over said vertical passageway, said duct having communication with the outer atmosphere, and a second duct communicating with the outer atmosphere and having an opening disposed above said vertical passageway.

9. The combination with a room of an overhead refrigerating element within the room spaced from the ceiling and side walls thereof, a pair of ducts extending over said element, one duct communicating at one end thereof with one end of the other duct, said ducts being formed with ports therein providing for the ingressof air therealong to one and the egress of air therealong from the other, and a fan arranged to set up a circulation of air through said ducts. v

10. The combination with a roomof an overhead duct assembly confined to the room and arranged centrally and longitudinally thereof, said assembly comprising a pair-of ducts, one a suction duct communicating therealong withthe interior of theroom, and the other a pressure duct communicating therealong with the interior-of the room, the

suction duct being in communication with the pressure duct, and means for setting up a circulation of air in said ducts.

11. The combination with a room of adjacent overhead ducts arranged centrally of the room, each duct having an extension in communication with the atmosphere at the exterior of the room, one duct opening therealong into the room in a plane above the level of its respective extension and the other duct opening therealong into the room in a plane beneath the level of its respective extension.

12. The combination with a room of adjacent overhead ducts arranged centrally of the room, each duct having an extension in communication with the atmosphere at the exterior of the room, one duct opening therealong into the room in a plane above the level of its respective extension and the other duct opening therealong into the room in a plane beneath the level of its respective extension,

and a fan associated with said last mentioned duct for impelling air from the exflerior of the room into andfrom said last uct.

13. The combination with a room of adjacent overhead ducts arranged centrally of the room, each duct opening therealong into the interior of the room and opening at one end into the atmosphere at the exterior of the room, and a fan in one duct adjacent the end thereof opening into the outer atmosphere,

said fanbeing arranged to impel fresh air into'its respective'duct and from said duct into the interior of the room.

In testimony whereof, I have signed my name to this specification.

CHARLES A. MOORE.

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