US1202853A - Ventilating system. - Google Patents

Description

. KINEALY.

t Patented Oct. 31, 1916.

VENTILATING SYSTEM.

APPL|cAT|oN FILED SEPT. 2, 1915.

.il /JU 2 SHEETS-SHEET 1.

1. H. KINEALY.

VENTILATING SYSTEM.

APPLlCATlON FILED SEPT-2,1915.

Patented Oct. 31, 1916.

2 SHEETS-SHEET 2.

l of which the JOHN `H. KINIIEALY,I'0]E FERGUSON, MJISASOURE.

ll,2tl2,53.

exact specification, reference being had to` the accompanying drawings, which form a part thereof.

` y invention relates to Ventilating sys- .tems for gplaces'occupied by human lbeings in which it is desirable to have/the air in 'as pure7a condition as possible, and to prevent the air therein from becoming stagnant or dead; and my inventionA relates particularly to those vsystems of- Ventilation in which a fan or similarvmeans is used for causing tilated. i

rlhe object of my invention isf to provide a Ventilating system by means of which van adequate `and proper. amountof warm air a low of air to the place to'be Ven- `may be supplied to the place to "be ventilated and, 1n addition thereto, to provide means whereby at stated or predetermined intervals the place to be ventilated may be flushed by means of cool air s0 as to destroy any stratification of air which may be formed in the place to be ventilated and thus prevent theair from becoming dead; anda further object of my invention is to provide aven- 'tilating system that is especially applicable to schools whereby all the rooms of schools may be simultaneouslyV flushed at regular predetermined intervalswith cool air for a hxed perid of time. s v

lln Ventilating-systemsused for schools and similar buildings it is customary to cause .a flow Aoffair through the rooms by means of'a fan-and to control the temperawhich controls the operation of v dampers ture ineach room by means of a` thermostat wherebythe temperature of the air ai'tte'd for ventilation may be varied to suitthe requirements of the room. 'lhis is especially lthose Ventilating systems in which` true of all or part ofthe wheating of the rooms', is

`done bythe air supplied for the Ventilation.

'llheair is introduced into the various rooms `in such a way as to avoid drafts, Wlth the result that in a short time the air appears vvto becomearranged -in strata and .the occupantsexlperiencea feeling of' heaviness and 'VENTILATING SYSTEM.

Specification of Letters iPatent.

` drowsiness sim following is a full, clear, kand patenten oet; ai, raie,

Application led September 2, v19115. Serial No. 48,666.

'lack life. lin orderto revivify and freshen the air inthe rooms lit has been customary for therteacherstovflush out the Various rooms by opening'the windows.

In most cases,vhowever, when the teacher 1n charge ply becauseuthe air seems to therefore, is

of the rooms manner that the flushing will be done at A or stated intervals and without any care or attention upon the part of the occupants of any of the rooms. e vMy invention is fully shown in the accompanying drawings Where similarl letters are lused to designate similar parts.

Figure 1 is a sectional View of a building equipped with a Ventilating system embody-v ing my invention tional View of one of the details of the ap- `paratus used in Fig. l; Fig. 3 is a View seen looking at the apparatus shown in Fig. '1 from the left thereof; Figs. 4;, 5 and 6 are views showing. details of parts of thefapparatus used in Fig. 1.

' Referring to the figures, A is a fan mounted upon a suitable lfoundation and .provided with a band Wheel A', by means of which it may be driven by a belt from a suitpredetermined able motor, not shown.

B is a heater by means of which heat is Fig. 2 is an enlarged sec-J heater 'B may be of any .one of the well -known forms of heaters used -forheatin air in Ventilating systems, and is4 connecte by ,suitable pipes, not shown-in the drawings, to a source of supply of heat. vvBeneath the warmiair chamber C there is located a cool al-r chamber D into which aia;l passes from 'the fan A without'passing over the heater B.

F is a branched duct through which air 'is suppliedto one of the rooms to be Ventilated'and which is connected to the warm airchambervC by means ofthe branch F and to the cool air chamber D by means of the branch G., Y

-ber D into the duct E. These dampers are pivotally supported so that they may be turned to any position so as 'to regulate the How of air from the chambers C and D through the duct E into the room. These dampers are preferably connected to one another by means of a link K and one of them,

in the apparatus shown in the drawings, the

damper I, has attached to it a crank arm L which is connected by means of a link M to the arm N of the pressure motor P is a source of supply of air under pressure and R is a pipe leading from an outlet pipe X to a thermostat Q locatedinf'a roor'nto which the duct E leads.

T isa branchpipe leading from the pipe R to the motor U is a restricting fitting, shown in section in Fig. 2, which has through it a restricted passage u. y Y

-Thermostats are so well known that it is not necessary to describe in detail the construction of the thermostat Q, but it suiiices to say that Q is provided with a restricted vent opening which is larger than the restricted opening u in the fitting U, and usually the vent in the thermostat Q is open fully when the damper F controlling the` flow of air from the warm air chalnber is fully opened and the damper I controlling the How of air from the cool air chamber is completely closed. When the temperature in the room has been raised to a certain predetermined point the thermostat Q acts to close the vent therein and then air passes through the restricted opening u of the fitting U into that part of the pipe R between the thermostat and the fitting U and through the pipe T to the motor O, until the pressure in these parts has become suiiicient to lcause the motor O to operate to force outwardly the. arm and by lmeans ofthe link M and the crank L to cause the dampers to be moved so that the damper I-I will be put into closedpositionand the damper I to be put into openposition, thus preventing the flow of warm air through the duct E into the room and allowing the How into the room of cool air. A A

Itis sometimes .desirable to regulate the temperature in the cool air chamber D and this' may be done by .providinga pivotally mountedpdamper Y in the'partition .Q between the warm air chamber C and the cool air chamber D. This damper is operated by means of a motor O- controlled by a thermostat Q. The motor O and the thermostat Q are connected to the source of supply of air P by means of the pipe R which isv provided with a restricting fitting U. The

thermostatQ controls the 7motor O so that maintained substantially constant at any predetermined paint between the ytemperature of the air leavin the fan and that of the air in the warm air chamber C.

W is a valve in the pipe R between the 4 thermostat Q and the branch pipe T. This valve is normally open but its stem is confv nected to the motor V by means ofwhich the` valve may be closed. When the valve W is closed the thermostat Q is operatively disconnected from the Ventilating system and air leaks through the restrictedr opening.

in the fitting U so that a pressure is created in the pipe T and the motor O in such a way that the motor O operates to cause the damper H to assume aclosed position ana the damper I .to assume an opened position, thus allowing cool air only to be supplied `through the duct E to the room. As long as the valve W is kept closed cool air only can be supplied to the room Aand thus the roomlwill be fiushed during the period that the valve W is kept closed.

S is a'controller connected to the outlet X of the tank P by means of the pipe R'A having a perforated hinged door a. Inside p of the casing there is placed a motor b having a revolving spindle d which carries a circular plate c. The motor b is preferably an ordinary springmotor of the clock type so arranged that the spindle d is given a uniform motion ofv rotation for a considerablel period of time. AThe spindle d has fixed to it a flange e and has its outer end threaded to receive the milled n ut f. The plate c is held in ixed position between the flange'e and the nut f so that it revolves with the spindle d, but when the nut f is loosened the plate c'may be adjusted or turned to any desired position on the spindle d. G is acam formed on the face of the plate c adjacent toits perimeter.

h is a bell crank lever attached by means of the bent spring k to the base piece 1 the exterior oit the shank j and which serves to hold the base piece z' inv fixed position. The upper end of the pipe R is adapted to engage with the interior threads of the shank j. J

m is a nipple having therethrough a restricted opening by means of which communication is established between the pipe R and the interior of the casing a. 'llhe opening in thenipple m serves as a vent for the pipe lF, and is larger than' the re stricted opening u in the fitting U.

n is a bearing screw which engages withZ a threaded opening in the vvertical leg ofthe bell crank h and which is provided with a tsuitable lock nut whereby when the screw n i A isadjusted it may be held in adjusted position. rllhe end of the screw n is rounded and adapted to bear on the face of the plate 0. rllhe screw end is' so adjusted that when it bears on the surface of the cam g the bell crank z. is moved so that its horizontal arm is pressed down so as to close the vent opening in the nipple m, and when the cam g is moved to one side of thel screw n the spring 7c. will move the bell crank lever L so that the opening in the nipple m will not be closed. When the vent in the nipple m is open air will escape from the pipe lltl into the casing a from which it will pass through the openings in thedoor a. Since the vent in the nipple 'in is larger than the restricted opening in the fitting U in the pipe R', when this vent is open-no pressure is created in the pipe, T andthe motor V- does not operate, and the valve W remains open. When however,-gthe vent in the nipple m is closed pressure accumulates in the pipe R and in the motor V, and the latter is caused to operate to close the valve W. The plate c is preferably made to revolve inthe direction of the hands of aolock. y

The operation of the system of ventilation is as follows: The fan A is set in motion and air isdrawn from a suitable source of supply which may be the outside of the building or it may be a room or chamber in which the airv is" warmed or washed or otherwise treated.- Part of the air leaving the fan passes over the heater B into the warm .air chamber, and'from there through the branch lh it passes the chamber H into vas the duct E and through this into one ofthe rooms of the building. Part of the' air from `the fan' passes 'directly into the cool air chamber D. Byv means of the thermostat IQ the nio'vement of the damper Y is con-4 trolled'so that as much warm air is allowed to pass from the warm air chamber C into the cooll .air chamber Das 1s necessaryto maintain the temperature of the cool air chamber-:at the desired point.' The `thermostats' Q control the actionv ot the motors Ofso as to cause them to operate the dam' pers 'll and ll toallow cool air or warm air any -suitable form, since a ,ber of rooms' and all of th l simultaneouslyushed with building, but preferably in one of the rooms towhich air is supplied. The motor being set in operation, the plate c is caused-to turn and when the cam -g is brought under the end of the screw 'n the bell crank lever is moved to close the vent in the nipple m and then air under pressure flows from the source of supply P into the pipes Rand 'll" and into the motors B and causes these latter to' -operate to close the valves .W. By the lclosing of the valves W all the thermostats are simultaneously operatively disconnected from the motors which they control. s soon as the valves W are closed air passes through the pipes R into the pipes 'll" and from there into the motors U and causes these llatter to operate to close the dampers H and to open the damper'sll, thus admitting a How of air from the cool air chamber to all the rooms of the building at the saine time. The surface of the cam Q on the plate o is made'of such a length that the end of the screw n will remain in contact with it for as long a period las desired, and thus keep the vent opening in the nipple m closed for a fixed period. -As long vas' thel vent opening in thenipple m iskept closed, cool air only will be supplied tothel rooms and during` this period of time the rooms will be flushed. The motor Z2 may be designed to cause the plate 0 to make as many revolutions per hour as-desired. butin the specific .form shown 4in the drawings the plate c is supposed tol revolve about once every hour and the operative suritacev of the cam g is made of such a length that'the rooms will be flushed during a period of approximately live minutes. v

lit at .any time it should be necessary or desirable to Hush the building other than at a time at which it would normally be dushed by the operation ofthe controller,vthe nut f may be loosened 1nd the plate c turned by hand so as to cause the cam g to act lupon the bell crank lever l1. to close the vent in the nipple m and thus bring about the ushing operation of the rooms.

. llt is evidentthat the otor t may be ot' is that it shall be able to drive the plate c with a substantially uniform motion.

- ll have Ishown my `Ventilating system applied to three rooms ot a building, but it is evident that it may be applied to any nume rooms may be cool air.

ll do not mean to restrict myself to t e that is necessary i215 exact details of apparatus shown vin the drawingssince it 1s evident that dierent methods may be used for simultaneously 1 i loperatively disconnec'tingl the thermostats from their respectivemotors.'

What I claim as new and desire to secure by Letters Patent, is:

1. In combination with -a ventilating'sysi tem for a room, dampers for controlling the temperature of the air supplied to said room, a fluid pressure motorA for operating said dampers, a thermostat controlling the accumulation of pressure in said motor, and means whereby at stated intervals said motor 1s automatically caused to operate indesure in the motor therefor, and means Whereby at stated intervals all of said motors are automatically and simultaneously caused to operate independent of their respective thermostats to move said dampers to a predetermined pcsition and there maintain them during a fixed period.

3. In combination with a Ventilating system for a room, dampers for controlling the temperature of the air supplied to said room, a fluid pressure motor for operating said dampers, a thermostat controlling the accumulation of pressure in said motor, and

means whereby at stated intervals pressure' is. automatically caused to be accumulated and maintained for a fXed period -in said motor independent of said thermostat.

4. In combination with a Ventilating system for a plurality of rooms, dampers for each room whereby the temperature of the air supplied thereto is controlled, a fiuid pressure motor for each room for operating the dampers therefor, a thermostat in each room controlling the accumulation of pressure in i `45 the motor therefor, and means whereby at stated intervals pressure is automatically and simultaneously caused to be .accumulated and maintained for a fixed period in all of said motors. l

5. In combination with a Ventilating sys- .tem for a room, dampers for controlling the temperature of the air supplied to said room, a fluid pressure motor for operating said dampers, a tube connecting said thermostat to said motor, a' valve in said tube, and means whereby 'at stated intervals said valve is automatically closed and maintained in a closed position during a fixed period.

6. In combination with a Ventilating system for a plurality of rooms, dampers for each room for controlling the temperature of the air supplied thereto, a fluid pressure motor for each room for operating the dampers therefor, a thermostat in each room controlling the accumulationof pressure in the motor therefor, a tube connecting each thermostat with its respective motor, a valve in each tube, and means whereby at stated intervals all of said valves are automatically closed and maintained in a closed position during a fixed period.

7. In combination with a Ventilating s vstem for a plurality of rooms, dampers for each room for controlling the temperature of the air supplied thereto, a fiuid pressure motor for each room for operating the dampers therefor, a thermostat in each room controlling the accumulation of pressure in the motor therefor, a tube connecting each thermostat with its respective motor, a valve in each tube, a fluid pressure motor for operating each of said valves, and means whereby at stated intervals pressure is automatically caused to be simultaneously accumulated and maintained for a fixed period in said motors for operating said valves.

In witness whereof I have signed my name to this specification.

JOHN H. KINEALY.

Images