US1741580A - Ventilating and refrigerating apparatus - Google Patents

Description

Dec. 31, 1929.

C. A. MOORE VENTILATING AND R EFRIGERATING APPARATUS Original Filed Aug. 15, 1924 2 Sheets-Sheet rzz/erz Z07" (72%77651/7170076 Dec. 31, 1929. c. A. MOORE VENTILATING AND REFRIGERATING APPARATUS 2 Sheets-Sheet 2 Original Filed Aug. 15, 1924 Patented Dec. 31, 1929 UNITED STATES PATENT OFFICE CHARLES A. MOORE, OF EDINA, MINNESOTA VENTILATHQ'G AND BEFBIGERATING APPARATUS Applicationiled August 15,1924, Serial No. 732,345. Renewed September 28, 1925.

My invention relates to improvements in ventilating and refrigerating apparatus.

An object of the invention is to provide an improved apparatus of the present nature lxfor chambers for the storage of perishable lading, said apparatus being adapted to provid e for refrigerated circulation of air within a chamber, also ventilated, refrigerated circulation of air therein, or a combination of the two, both conditions being brought about naturally through gravitation.

A further object of the invention is to supply an apparatus, as above, the same being equipped with a fan adapted to augment the efficiently increase its capacity in ventilating the room and circulating refrigerated air therein.

With the foregoing and other objects in view, which .will appear in the following description, 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 an elevational view of an apparatus embodying my invention, thesa'me being illustrated as installed in a chamber and having parts thereof broken away to disclose internal structure; Fig. 2 is a vertical central sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is a plan view ofthe apparatus illustrated in Fig. 1 and Fig. 4 is a transverse sectional view taken on the line 4-4 of Fig. 2.

Referring to the drawings, it will be understood that the floor, wall and ceiling portions, indicated by the numerals 10, 11 and 12, represent a part of a structure forming a chamber A for the storage of perishable conimodities. My improved appliance is installed in such a chamber in the. manner shown and includes in its construction two main conduits B, C, the former, a conditioning conduit through which fresh air is admitted to the chamber A, and the latter, an exhaust conduit for discharging foul air from the chamber. The conduit B comprises a cylindrical shell 13 seated at one end thereof on the floor 10 over a drain 14 inthe floor, .said shell being fitted at its upper end with flow of air through the apparatus and thus of the junctions between wall 11, communicates with the shell 13 through the cap 15. Thimbles 18 at the lower 0 margin of the shell 13 are provided with removable caps 19, said thimbles providing for the egress of refrigerated air from the shell 13 into the lower portion of the chamber,

when that is desired. The conduit C is arranged within the conduit B, axially thereof,

an egress pipe 20 being extended from the lower end of said conduit, through the shell Y13 and wall 11 and into the outer air.

A supply duct 21 and a return duct 22 are 7 disposed horizontally along the ceiling 12 of the chamber A, the supply duct 21 being slightly lower than the return duct 22 and supplied with a port 21 in the lower side thereof, said port 21 reaching from end to end of said duct 21. The return duct 22 also has a port therein. This port, designated as 22, extends fromend to end of the duct 22, and differing from the port 21", is formed in the upperside of said duct. Said supply duct 21 is connected with the shell 13 through "the medium of a feed pipe 23 rising from the lower margin ofsaid shell and the return duct 22 is connected with the upper end of the exhaust conduit C through the drop-pipe 24. Two additional drop- pipes 25, 26 connect said return duct 22 with the ingress pipe 17.

Within said ingress pipe 17 and intermediate said drop-pipes 25,

26 therewith, I place a conventional fan or blower 27, the purpose of which will soon appear. The drop-pipes 24, 25'and 26 and ingress pipe 17 are respectively "fitted with dampers 24, 25, 26 and 17, as shown.

In use, a suitable refrigeratin medium is circulated through the coiled pipe 16, said W medium serving, primarily, to refri erate V the air within the shell 13 and, secon arily, to lower the temperature of the air within the exhaust conduit C.

By removing one or more of the caps 19, opening the valve 26 and'closing the valves 17 24 and 25 the fan 27 being idle, natural refrigerated internal circulation of air within the chamber is attained. Under this condition air within the shell 13 is chilled by the refrigerant in the pipe 16, and, thus affected, flows through the open thimble 18 into the room. Tempered in the chamber, said air rises to the ceiling and entering the port 22 of the duct 22 returns through said duct and the drop-pipe 26 to the shell 13.

Opening the valves 17 24 results in natural mixed, refrigerated, ventilated, internal circulation. Under this condition it will be understood that fresh air is admitted to the shell 13 through the ingress pipe 17 and that a part-of the air entering the return duct 22 is exhausted into the outer atmosphere through'the drop-pipe 2 1, chilled conduit C and egress pipe 20.

Closing the valve 2o resolves the last mentioned condition into that of natural refrigerated ventilation within the room, under which condition all of the air entering the return duct 22 is exhausted through the droppipe 24, conduit C and egress pipe 20.

Operation of the fan 17 augments the naturally created conditions above pointed out, and provides for supplying chilled air to the chamber A at the top thereof. Upon applying the caps 19 tothe thimbles 18, air propelled downward through the shell 13 by the fan 17, is led to the supply duct 21, through the upright feed pipe 23, and directed downwardly into the chamber A through the port 21 in the underside of said duct 21. The damper 24 according to the adjustment thereof, either blocks or permits of the exhaustion of air into the outer atmosphere, as before. The damper 26 is closed and the damper 25 opened. WVith said vfan 17 idle there is no need of returning air past and in contact with it. Therefore, the damper 25 is closed and the damper 26 opened, when the appliance is operating naturally. Under force, however, and with the fan 27 rotating it is necessary to admit returning air to the pipe 17 at the suction side of the fan 27 and to block said air against shorting into the duct 22 through the drop-pipe 26. The valves 25, 26 for this reason are adjusted as described, the former being opened and the latter closed, when the fan 27 is put to use. A

lVhile the feed pipe 23 and supply duct 21 are used in cpnnection with the fan 27 to deliver chilled air' into the upper portion of the chamber A, it will be understood that such air may be supplied to the lower portion of the chamber, under pressure of the fan, by

removing one or more of the caps 19 from the thimbles 18.

Changes in the specific form of my invention. as herein disclosed, may be made within chamber including an upright air conditioning conduit, .an element associated with said conduit for refrigerating air therein, an upright exhaust conduit within said conditioning conduit, an elevated supply duct opening downwardly into the chamber, an elevated return duct communicating with the chamber along and near the ceiling thereof, a valved ingress pipe leading inwardly from without the chamber to the upper end of the conditioning conduit, said conduit having valved communication at the lower end thereof with the chamber near the floor, a feed pipe leading upward from said lower'end of the conditioning conduit to the supply duct, a valved drop-pipe connecting the return duct with the upper end of the exhaust conduit, an egress pipe leading from the lower end of the exhaust duct to the outer air, a pair of spaced, valved drop-pipes connecting said return duct with said ingress pipe, and a fan within said ingress pipe and between the junctions of said spaced drop-pipes with said ingress pipe.

2. The combination with a structure forming a lading chamber, of means within said said element, an elevated supply duct opening downwardly into the chamber, an elevated return .duct communicating with the chamber along and near the ceiling there-' inwardly of, an ingress pipe leading from without the chamber to the upper end of the conditioning conduit, a feed pipe leading upward from the lower endof the conditioning conduit to the supply duct, a valved drop-pipe connecting the return duct with the upper end of the exhaust conduit, an egress pipe leading from the lower end of the exhaust duct to the outer air, a fan in the ingress pipe and a valved drop-pipe connecting the return duct with said ingress pipe at the suction side of said fan.

3. The combination with a structure forming a lading chamber, of means within said chamber including an upright air conditioning conduit, an element associated with said conduit for refrigerating air therein, an upopening into the chamber, an elevated return duct communicating with the chamber near the ceiling thereof, a valved ingress pipe leading inwardly from without the chamber to the upper end of the conditioning conduit, a feed pipe leading upward from the lower end of the conditioning conduit to the supply duct, a valved drop-pipe connecting the return ductv with the upper end of the exhaust conduit, an egress pipe leading from the lowerend of the exhaust duct to the outer air, a pair of spaced, valved drop-pipes connecting said return duct with said ingress pipe, and a fan within said ingress pipe and between the junctionsofsaid spaced drop-pipes with said ,lngress plpe'. s i 4. The combination with a structure forming a lading chamber, of means within said chamber including an upright air conditionj ing conduit, an element associated with said conduit for refrigerating air therein, an upright exhaust conduit, an elevated supply duct opening into the chamber, an elevated return ductcommunicating with near the ceiling thereof, an ingress pipe, leading inwardly from without the chamber to the upper end of the conditioning conduit, a feed pipe leading upward from the lower end of 7,5 the conditioning conduit to the supplyduct, adrop-pipe connecting the return duct with a "the upper end of the exhaust conduit, an egress pipe leading from the lower end of the exhaust duct to the outer air, and a fan in the so ingress pipe.

a 5. The combination with a structure form? ing a lading chamber, of means within said chamber including an upright air conditioning conduit communicatingat its lower end withthe interior of the chamber near the floor thereof, an element associated with said conduit for refrigerating air therein, an u right exhaust conduit positioned near the an conditioning conduit and affected by said ele- 40 ment, said exhaust conduit communicating at its lower end with the outer atmosphere, an' air ingress pipe leading from without the chamber into the upper end of the conditioning conduit, an elevated, elongated duct communicating with the chamber along the ceiling thereof, a valved drop-pipe connecting sa1d duct with the upper end of the exhaust the chamber ulating the flow of air through the exhaust conduit.

7. The combination with 'a structure forming a lading chamber, of an. elevated supply duct opening into the chamber, an elevated return duct communicating with the chamber near the ceiling thereof, an upright conduit, a refrigerant container associated therewith for refrigerating air therein, said conduit communicating at its upper, end with the outer air and at its lowerend with said supply duct, an upright exhaust conduit communicating at its upper end with said return duct and at its lower end with the outer air, and a fan associated with one. of said conduits for impelling air therethrough and building up a pressure within the room for stimulating the flow of air through the other conduit.

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

CHARLES A. MOORE.

conduit, and a second valved drop-pipe connecting said duct with the upper end of the conditioning duct.

6 The combination with a structure forming a ladmg' chamber, of an elevated supply duct opening into the chamber, anelevated return duct communicating with the interior of the chamber near the ceiling, an upright air conditioning conduit, air refrigerating means associated therewith, said conduit oommunica air and atlts lower end with an upright exhaust conduit commumcating at its upper end with, said return duct and at its lower endwith the outer air, and a fan associated with said conditioning conduit for impellmg air therethrough and buildin u an Internal premure within the room for stimat its upper end, with the outer said supply duct, i-

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