US2408973A - Air conditioning apparatus - Google Patents

Description

I m. s, 1946.,

ATTORNEY 3 Sheets-Sheet 1 BY 7P7;

CLIFFORD $.Coor.

C. S. CODY AIR CONDITIOIYING APPARATUS Filed May 8, 1943 F? a. E

C. S. CODY AIR CONDITIONING APPARATUS s Sheets-Sheet 2 Filed May 8, 1943 R s s INVENTOR CLlFFORD 5. CoDY. a

TTORNEY x c. s. CODY AIR CONDITIONING APPARATUS Filed May 8, 1945 3 Sheets-Sheet s s2; 4 INVENTOR BY ATTORNEY Patented Oct. 8, 1946 AIR CONDITIONING Cliiford S. Cody, Spring Westinghouse Electric Pa., acorporatio APPARATUS field, Mass, assignor to orporation, East Pittsn of Pennsylvania Application May 8, 1943, Serial No. 486,136- 7 Claims. (01. 62-129) My invention relatesto air A further-object sible control knob or handle.

A still further object of my invention is to produce an improved and inexpensive constructio V A still further object of my invention is to proconstruction by which the Fig. 4 is a section shown in thereof extends outside of the roo rear' walls l6 and to rest on top of thecasing I I (Fig. 3). inner portion [2 of the casing extends d a rear or outer portion [3 The casing walls l4 and I5, front and I1, and top and bottom walls I 8 and 39, some or all of which may be detachably secured to one another by any suitable is adapted A front or is provided with side means, not shown.

driven by 'Within the casing H, there is provided a remay be of an enclosed Blowers 2| and 22, flow of'air over the motor compressor unit 26 type well known in the ar a motor M, provide 23. The. openings.34..and .35 .may. be .provi dampers 31 and 4|:

1 rater -21, as ahousing 3|, which is .best seen in having -.the

'- within the casi inlet opening theopenings 34 and 36 and through thescondenser 23 and .out .through the suitable ing 3 l forconveniently of the motor-compressor unit 15 recompressed and recirculated.

Fig. 5, and

into inner and outer compartments, with t e blower 2|, the condenser 23 and the motor compressor unit 26 disposed in the outer compart ment, which may be referred to as a compartment, and which extends to w-thout the room, and with the evaporator- 22 ferred to as the cooling compartment and-which extends toward or into the room.

outer wall H is provided with'an" 34 registering with the charge opening 35 registering with the condenseg inletop nin shown). '.On' the side .walll'l5 2 is. another outside air I draws .air' through iblows it against. or

with louvers. (not. adjacent the. blower.

36. The fan 2 opening 35. "The opening. 36 iscontrolledby a door or damper 31 which is constantly biased in closing direction by means. of a. spring 38 on the rod 39. on which the damper 131, is hingedin any Likewise, the inner or room end of the vunit is also provided at the bottom with inletopeningMl controlled bya door or damper 4| hinged on arod 42 andbiased into the opening-40 by a spring 43 (Figs 1). .The structureand operation. of ,the willalso be hereinafter-more fully explained,

w To reduce the cost of manufacture and assembly; and to 'facilitaterremoval of the parts for replacement. and

and accessiblymounting the fans 2| and-22, and the evapounit withinthe casingll. The

Fig. 5, is preferably .formed of at-single blankof sheet metal desired strength. The blank is first cut and then bent into a U-sha-peto form abotf-ront wall two: separate sections 46; and 46, The back wall 133. and thefront 146 and 48.- aret-bentl (see Figs. '4 and 6).,to merge .with .the dished. portion -.4!l'of the bottom wall 44. V -;3|.1s supported g H .on=brackets the motor M,

50. The openingor space leftcbetweeni the juxtaposed vertical wedges v! of the front .wall sections 146 and 46 is closed by a suitablyesecured partition 52 oneverv1ticaledge ofwhich is flanged and secured at 52a to the-insideof the frontwall section 48, and

-tom IQ of the 1 latter toor 'be hereinafter the othervertical edge of which is flanged and secured to-thezinside of the wall section 46 as at and cooling. compartments, of. the back'wall. 3 of the housing passage 53'formed .the bottom 44 of the housing 3| and the casing zInzaddition-t-o' serving. as an air.;passage,-. as will described, the passage 53-, by spac- 44 of the housing 3| from-the bot,- casing ||,-prevents.cooling of the below the: dew point and. therefore ing the bottom prevents moisture condensation .on the outersur- .-face of the bottom .|9. which .wouldbeobviously undesirable.-

.insulate the bottom wall 19 with cork or the like Heretofore ithasbeen necessary to .andaidis machine in the inner compartment, which maybereto prevent condensed moisture from collecting on the window sill and running down the wall of the room.

as best shown in Fig. 1, the evaporator 21 is positioned between, and suitably secured to, the rear wall 33 and the front wall section 46 of the housing 3| by screws or the 'ture's 33awhile'the fan the back wall 33 and the front wall section 48, and carried by the motor shaft 54, passing through an opening 56 in the back wall 33 of the housing 3|. In the trontwvall section 48, there is provided an -.air inlet-opening 55 which registers with the suc- .-tionopening ofv the fan 22,

Theian 22 .is-provided with a shroud 51 formed of resilient or nonresilient sheet metal, and extending transversely from the front wall section 48-to the back wall 33. One end 58 of the shroud 51 is bent and secured to ofthe housing of the evaporator 21 as best seen fromFigs. 1 and2. "The other end of the shroud 51 is likewise bentto engage a ,slot'tll formed in the bottom wall of the housing,- as best shown in Fig.2. I

Theshroud 51, if made from nonresi'lientmetal, may be rolled to the desired involute 'shapejand is retained in position by being made. .to'jabut against correspondingly arranged and transverselyedispose'dstuds 01 bolts 22is positioned between through suitably-spaced. openings 53 in the front wall section the bolts 62 and its. tendency to flex snugly against the. corresponding edges of the .by .the fan.

..8|| carried by the door 4|.

. secured to the door shroud 51,..rigidly but.detachably .to secure the shroud and corresponding walls of,th'e..housing 3| together. This also provides a boxlike struc- .ture which affords adequate support for the fan .122 .and .the: motorl.M. Thewmotor. M .may be secured to. the outer side of.the.wall 33 by any suitablemeansv such .as the brackets 64, A-fllter .t 6. is. disposed. across. the front of he. suction opening 55 and is securedinpositiontby any .suitablemeans insuch manner that, all air drawn 22-must. pass through the filter.

dampers are regulated bysimplified means comprising a stud naled in aligning openings in aibracket 111 and |5.of. thecasing handle12 and a spring .13..prcvides resistanceagainst unintended rotationalmovement. To the stud 69 is rigidly secured a bell crank having. divergent arms 14 and 16.. The arm 14- has connected. to it one end of a.flexible.element-18, the. other end of which is secured to the down; or to an extension hook Similarly, thearm 16 has connected to it one .end ofanother. flexible element .82, the other end of which is likewise 31 orv to an extension hook "84 carried by the door 31. I The flexible elements .18 and Y82 pas through openings 83 in the walls '33 and 48lof the housing 3|.

Operation ofthe knob'12, the arms 74 and 16 are in the posi- While I have shown my invention in but one tion shown in Fig. 6, inwhich the door 4| closes form, it will be ob 'ous'to those skilled in the art thetopening 9030f the passage 53, but in which that it is not so limited, but is susceptible of the opening 36 is not obstructed by the door 31. various changes and modifications without de- 27, and out through grill opening 85 in the top the appended claim of the unit back into the room. The path of WhatIclaim is: 4 movement of the air is clearly illustrated by the .71. Flu a room air conditioning unit, a casing arrows in Figs. 1 and 2. In this position, the having an outer compartment and an inner inlet 36 is open and the fan 2| draws outside air compartment, a refrigerant condenser in said through the inlet 36 and the opening 34 and outer co discharges it through the condenser 23 and said inner compartment, said evaporator being opening 35. l5 operatively connected to said condenser, there When it is desired to exhaust air from the being a passage'connecting said compartments,

to bring the door 4| into the position shown in a conditioned air outlet leading from said evaproom air out through the openings 40 and 90 and controlling the inner end of said passage and I the condenser 23 and out through the opening means being so constructed and arranged that in In its extreme clockwise position, as shown one position of said actuating means said damper in Fig. 7, the arm 14 abuts against a stop 11 30 closes said room air inlet and in a second posi now appear as shown in Fig. 8. In this position, 5 air inlet and the inner end of said passage.

thus drawn passes through the filter 6i; and the tition between a front heat exchange compartthe opening 40 so that the fan 22 will continue disposed within said U-shaped member near the .to draw some room air through the opening 40 other end thereof, a sheet metal shroud disthe passage 53, and the opening 90 (see arrows cooperating with said U-shaped member to form in Fig. 1). The mixed air is then passed through a fan casing discharging a r thr ugh said heat completely to close the opening 49 so that the ow of air over said condenser, and a motor in entire suction of the fan 22 would be utilized to said machine compartment for driving both of force outside air exclusively into the room said fans It will thus be seen that I have devised a com- 3 In a mom air conditioning unit a casing pact air conditioning unit of a balanced conhaving a first compartment and a second comturning of the knob 12 to one of the positions in said first compartment, a refrigerant evapthe above description, that this is accomplished air outlet leading from said first compartment filter 66 with respect to the fan 22 and the evapo- 70 room air inlet for admitting air from a room to second position of said means, said room-air inlet and said passage are by said said passage outlet, and in outside-air inlet and said passage are open and said room-air inlet is sufficiently closed'so that outside air is drawn by said second fan through said outside air inlet and said passage into contact with said evaporating unit and is discharged into the room through said discharge opening.

4. In a room air conditioning unit, a casing enclosing air conditioning apparatus including a refrigerant liqueiying unit and a refrigerant evaporating unit, said casing having an outside air inlet for admitting air from the outside atmosphere to said refrigerant liquefying unit, an air outlet leading from said refrigerant liquefying unit for discharging air to the atmosphere, a room air inlet for admitting air from a room to said refrigerant evaporating unit, and a conditioned air outlet leading from said evaporating unit for discharging air back to said room, a fan for drawing air through said outside air inlet into contact with said liquefying unit and discharging through said outlet, a fan for drawing room air through said room air inlet into contact with said evaporating unit and discharging it back into the room through said conditioned air outlet, a passage connecting said room air inlet with said outside air inlet and said outlet, flow or outside air and room air into and through said casing comprising, a first damper trolling said outside air inlet, a second damper for selectively controlling said room air inlet and the adjacent end of said passage, and actuating means for operating said dampers selectively to close or open said inlets or said passage. 1

5. In a room air conditioning unit, a casing having a first portion and'a second portion, a first heat exchanger in said first portion, a second heat exchanger in said second portion, an outside air inlet for admitting air from the outside atmosphere to said first portion, an air outlet leading from said first portion for discharging air to the atmosphere, a room air inlet for admitting air from a room the air of which is to be conditioned to said second portion, a room air outlet leading from said second portion for discharging air to said room, a fan for drawing air die through said outside air inlet into contact with said first heat exchanger and discharging it to the outside'atmosphere, a fan for drawing room air through said room air inlet into contact with said second heat exchanger back into the room through said room air outlet, a passageconnecting said room air inlet with said outside air inlet and said outlet, and means for regulating the flow of outside air and room 'ing air to the: outs'ideat'rnosphere,

air 'irito or throughj said-unit eemprlsing' anrst damper ror' 'cdritrolling said' outside-air irxlet; a second damper ior 'selectively controlling said room-air inlet and theadja'cent end of said pas sage, and actuatingmeans for operatingisaid dampers, said actuating means and said damp ers being so constructed and arranged thati'n one position thereof, said inlets are open and said passage is closed, while in another position thereof said roorn air inlet and said passage are open and said outside-air inlet isat least' partly closed, an'dlin' still another position of saidactuating means and 'said'dampers, said outsideair inlet and said passage are open and said room-air inlet is at least partly closed.

6. In a room air conditioning unit, a casing enclosing air conditioning apparatus including a condenser and an' evaporator, and means'f'oi' 'to' recirculat'e in contact with for causing outside air to 0001 said condenser; for'causing outside air to come in contact with said evaporator-'andto flow into said room, or for causing room air to now to the outside atmosphere comprising, inlet and outlet air openings for admitting air'from or discharg= a fan for drawing air through said inlet opening into con tact with said condenser and discharging it through said outlet, room-air inlet and outlet openings foradmitting air from or discharging air to said room, 'a tan for'drawing roomair through said room-air inlet opening into' contact with said evaporator and for discharging said air back into said room through said room outlet opening, there being a passage connecting said room-air inlet with said first-mentioned. outlet, a shutter adapted atileast partially to close said first mentioned inlet opening, a, second'shutter adapted selectively close said room air inlet opening or said passage, and means operatively connected 7 said shutters into their respective operative po- 'sitions.

'I. In a room air conditioning unit, a casing having an outer portion and an inner portion, a compressor and a condenser in said outerportion, said outer portion having an outside air inlet and an outlet for admitting air from and discharging air tothe outside atmosphere, a blower for'drawing outsid'e air through said inlet into contact with said condenser and discharging it through said outlet, a U-shaped housing disposed transversely of said casing and having spaced innerand outer walls, with the outer wall of 'saidhousin'g separating said outer and inner portions' of said casing, a cooling element connected to said condenser and carried between the inner and' outer walls of said housing, the bottom of said housing being spaced from the bottom'oi' said casing to form a passage conmeeting said inner and outer portions 0! said casing, there being a room air inlet for admitting air from' a room to said inner casing and a' room airoutlet' leading from said inner portion for discharging air back to said room, a second blower also carried between the inner andzouter walls of said housing for drawing room ai'r through said room air inlet into contact with said evaporator and discharging it into said room through said roorn air outlet, and

dampers for controlling said inlets and said passage.

CLIFFORD s. CODY.

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