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Патент USA US2127472

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Aug» 16» 1933»
D. G. TAYLOR ‘
2,127,472 `
TEMPERATURE CHANGING SYSTEM
Filed Sept. 5, 41935
WW
[email protected]
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/f
ßmziel Gf Iglo?" »
Patented Aug. 16, 1938
'
2,127,472
lUNITI-:o STATES PATENT OFFICE.
@ING VSYSTEM
Daniel
TEWERATURE
G. 'l‘aylon Minneapolis,
il
ii
:i w ., assignor to
Minneapolis-Honeywell Regulator lßompany,
Minneapolis, Minn., a corporation ol llielaware
`dpplication September 5, i935, Serial No. 39,293
lill @laimu (Cl. 23d-ll.)
,
I'li'his invention relates to temperature changing
systems of the type disclosed in my copending
application Serial No. 512,887, tiled February 2,
i931.
,
*
The system disclosed in the above referred to
application comprises anoutdoor controller re
sponsive to outdoor'atmospheric conditions, in
cluding temperature, wind, and solar radiation
lor controlling the temperature within the build
Heating means are provided in the bulld
to' ing.
ing for supplying heat to the building and heating
means are also providedin the outdoor controller
ior supplying heat to the outdoor controller. The
two heating means are proportioned according
' to the heat losses from the building and from the
outdoor controller. A thermostatic device is pro
vided lor responding to the temperature within
>the outdoor controller and when this thermo
static device calls for heat both of the heating
dit 4nuaans are energized to deliver heat to the build
ing and to the outside controller. Due to the
proportional relationship of' the heating means
with the heat losses of the building and the out
side controller, a definite temperature relation
is maintained within the building and the outside
controller so that by responding to the tempera
ture oi’ the outside controller, the thermostatic
device maintains a constant or normal tempera
ture within the building.
'
From the above it follows that the temperature
changing system disclosed in my copendlng ap
plication measures the heat demand and con
trols the amount or heat supplied to the building
purely as a time function and in order for the
amount ofv heat supplied to the building to be
proportional to the demand for heat, or to the
arnountof heat supplied to the outdoor con
troller, it is necessary for the outdoor controller
to control some source oi heat in which the
amount of heat supplied is in direct proportion
to the operating time. In other. words, upon a
call lor heat by the outdoor controller tor a given
supplied in a given time as will be supplied when
these conditions are less favorable.
It is therefore an object of this invention to'
remedy the above defects in the described sys
tem wherein the heat source is controlled by a
Stoker, etc.v
u More specifically, it is an object or this inven
t1on o provide a means for determining or meas
urlng the amount of heat required to be delivered
to the building, means for determining or meas
10
uring the actual amount of heat delivered to the
building and means for correlating these two
means into a control device for controlling thev
operation of a stolrer or the like whereby truly
proportional amounts of heat may be accurately it
determined and delivered to the outdoor con
troller andthe building.
`
The novel manners in carrying out this type
of control for a temperature changing system
also provide objects oi this invention.
20
'
@ther objects and advantages of this invention
will become apparent to those skilled in the art
upon reference to the accompanying speciiica
tion, claims and drawing in which:
`
li’ig. l is a diagrammatic illustration of the pre
ferred iorm of my invention.
>
'
Fig. 2 is a partial sectional view oiî the switch
“ ing mechanism used in Fig. l.
Fig. 3 is an enlarged sectional view taken sub
stantially on the line l-t of Fig. 2 but with the 30
retaining plate omitted for purposes oi clearness.
Referring to Fig.' l, the temperature changing
system ol this invention is shown as applied to a
building having an outside wall it 'and a plural
ity oi’ spaces tobe conditioned one of which is
shown at ll. Although this invention in its broad
aspect contemplates 'a cooling system, as well as
a heating system, for purposes of illustration l'
35
have shown a particular type of heating system
winch may taire the form of a steam heating sys 40
tem. Located in the spaces to be heated il are
radiators or heatl exchangers il to which steam
is supplied by means of risers it. The usual ra
supplied to 'the building. This is Ksubs‘i‘antially _ diator valves il are connected between the risers
true oi steam valves controlling the supply otA lt and theradiators il. The risers il are con
steam to a building trom a source maintained at nectedI into a steam header it which in turn is
'approximately constant pressure and it` is also >connected to a boiler il! by a steam supply pipe,
substantially true where the outdoor controller it, Therefore, when steam is generated in the
interval ol time, a given amount-„oi heat must be
controls an oil or gas burner. I-loweven,- in the
lill case ol such heat sources as stokers, etc. demand
boiler ll, it passes through the supply pipe it,
the header lb and the risers lt/into the radiators vto
by the outdoor controller for operation lor a deñ- ¿ il to be condensed therein. Water or. condensa
tion is returned to tbeboiler il from the radia
tors il through the conventional steam traps it,
time since under favorable conditions oi dralt» the return risers it, return header 20 and re
“ iuel bed, etc., several‘times as much heat may be f tum‘pipes 2l and tt. Connected between the 55
nite length'or time does not ‘give any accurate
’ measure ol the amount oi heat delivered-ln that
2
2,127,472
return pipes 2IA and 23 is a condensate meter 22
of usual dœign for performing a control func
tion in the manner to be pointed out hereafter.
connections between the shaft 42 and the collar
4I tends to maintain these elements in the posi
tion shown in Fig. 3.v The springs and keys are
held in place in the enlarged bore 45 of the col
lar 4I by means of a. plate 50 suitably secured to
the collar 4I. Secured to the collar 4I and in
By employing the steam traps I3, condensate only
is allowed to return to the boiler as is usual in
heating systems of this type. A steam trap 24 is
located between the supply header I5 and the re
turn header 20 to drain oif any condensate that
may form in the high side of the steam heating
10~ system. The above described steam heating sys
tem is well-known in the art and any other ap
electrical contact therewith is a contact arm 5I.
A shaft 53 is provided with an insulating sleeve
54 on which 'is mounted a collar 55, having an
integrally formed conducting sleeve 56. The col
lar 55 is insulated from the shaft 53 by an insu
lating sleeve 54 and is non-rotatablyv mountedv
pliances that are used in such heating systems
may be applied in the system> brieflydescribed.
10
on the shaft 53 in any suitable manner such as
'I‘he boiler I1 is shown as being fired by a
15 stoker 25 although any other type of firing means
may be used. 'I'he stoker 25 is of usual design
and is operated in the usual mannerby an elec
tric motor 23. A high limit pressure switch 21
of usual design is yprovided in the boiler to pre
20 vent the forming of undue pressure therein. 'I‘his
high limit pressure switch 21 contains' a mercury
by means of a pressed fit. The collar 55 is pro
vided with a contact arm 51 which extends out
15
wardly adjacent to the contact arm 5I. Spaced
from the collar 55 and mounted on the sleeve 56
is a collar 59, having an integral conducting
sleeve 60. The collar 59 is non-rotatably secured
on the sleeve 56 in any suitable manner such as 20
by a pressed ñt. The collar 59 is provided with
a contact arm 6I"which extends outwardly adja
cent the other side of the contact arm '5I of the
collar 4I.
Assume the parts in the position shown in 25
switch 23. The -stoker motor- 23 is connected by
a wire 29 to a line wire 3l).v The other line wire
3I is connected by a wire 32 to a contact 33.
Cooperating with the contact 33 is a switch arm
34 which ls connected by a wire. 35 to one elec
Fig. 1 with the contact 5I spaced midway between
trode of the mercury switch 23 operated by the
high.1imit pressurev device 21. The other elec~
»trode of the mercury switch 23 is connected by
the contacts 51 and 6I.
Movement of the shaft
53 in a counter-clockwise direction as viewed in
Fig. 1 causes movement of the contact arm 5I
a wire 33 to .the stoker motor 23.
into engagement with contact 5I.
» When the switch arm 34 is moved into engage
counter-clockwise movement of shaft 53 causes
counter-clockwise movement of both Contact
ment with the contact 33 in the manner to be
Continued 30
pointed out hereafter, a circuit is completed arms 3| and 5I, this continued movement being
_from the line wire 3| through wire 32, contact permitted by the strain release connection be
33„switch arm 34, wire 35, mercury switch 23, tween the contact 5I and the normally station
wire 33, stoker motor 23 and the wire 29 back to ary shaft 42. Upon stopping of the rotation of 35
the other line wire 30. Completion of this cir kthe shaft 53 and upon counter-clockwise rota
cuit causes operation of the stoker 25 and conse
tion of shaft 42 .the strain release connection is
relieved and when the springs 48 and 49 become
quent flring of the boiler I1 whereby steam is
generated and delivered to the heat exchangers
or radiators I2. As pointed out above, the time
required to deliver steam to the heat exchangers
equally tensioned by this counter-clockwise 40
movement of shaft 42 the contact arm 5I moves
out of engagement with the contact arm 6 I. Con
or radiators I 2 upon closure of switch arm 34 with
tinued counter-clockwise movement of the shaft
the contact 33 varies from time to time depend
45 ing upon the condition of the draft, fuel bed. etc.
42 causes movement of the contact arm 5I into
engagement with the now stationary contact arm
51. Continued movement of the shaft 42 is per
mitted by reason of the strain release connection
between the contact arm 5I and the shaft 42.
Although it has been assumed in this description
of the- operation of the switching mechanism
Upon movement of switch arm 34 out of engage
ment with the contact 33 or upon the existence
of an abnormally high pressure in the boiler I 1 so
as to tilt the mercury switch l23 into a circuit
50 breaking position, the stoker 25 is placed out of
, operation to prevent the further generation of
steam.
that one or the other of. the shafts 42 and 53 is 50
'
A contacting or switching mechanism is gen
erally shown at 43 and byreferring to Figs. 2
55 and 3, _the details of construction are shown v
therein. This switching mechanism 43 comprises '
a collar 4I, loosely mounted on a normally sta
tionary shaft `42, the collar 4I being provided
with an integral electrical conducting sleeve 43.
The shaft 42 is provided in >any suitable manner
with an enlargement 44 which is positioned with
in an enlarged bore 45 in the collar 4I. The en
larged portion 44 of shaft 42 is provided with an
abutment key 43 and diametrically -positioned
from the abutment key 43 is' another abutment
key 41 carried by the collar 4I. Located .between
the abutment keys 43. and 41 are diametrically
opposed springs 43 and 49. These springs 43 and
43 are -equally tensioned so as to tend to maintain '
70 the abutment keys 43 and 41 diamètrically spaced.
.The keys 43 and 41 and the springs 43 and 49
form/a two-way strain release connection be
tween the'shaft 42 and the collar 4I so that the
shaft 42 andthe collar 4I may be rotated with
A75 respect to each other but the- strain release
stationary, it will be seen that relative move
ment of these shafts will cause substantially the
same operation.
'
'I'he condensate meter 22 is diagrammatically‘
55
shown to comprise a bucket wheel 32 so that when
condensate flows from the return header 23 tow
the boiler I1, the bucket wheel 32 is rotated in a
'
counter-clockwise direction as viewed in Fig. 1
to'rotate the shaft 42 in a counter-clockwise di 60
. rection.
When no condensate is flowing, the
Awheel 32 and shaft 42 remain stationary. The
shaft 53 is driven in a counter-clockwise direc
tion through a reduction gear train 63 by a rotor
34 upon energization of a field 35. The conduct
ing sleeves 53, 60 and 43 are contacted by brushes
or fingers 61, 33 and 39, respectively, so that
when the contact arm 3I is moved into engage
ment with the contact arm`5l, an electric circuit
is completed from the brush 33 to the brush 39
and when the contact arm 5I is moved into en
gagement with the contact arm 51, 'an .electric
circuit is completed from the brush 61 to the
brush 33. .
A primary 12 of a step-down transformer 13,
70
3
2,127,472
having a secondary 1l is connected across the line
` of switch arm 3l out of engagement with the con
wires 30 and 3| by wires 10 and 1i, respectively.
A relay comprising an energizing coil 15 and a
bucking coil >1li operate a switch arm 18 and the
switch arm 34.' Upon energization of the ener
gizing coil 15, the switch arms 18 and 34 are
moved into engagement with a contact 1l and the
contact 33, respectively. Upon energization of
the bucking coil 16, which neutralizes the action
'io of the energizing coil 15, the switch arms 18 and
tact 33 prevents the further operation oi stoker 25
and the further generation of steam in the boiler
I1. Movement of switch arm 18 out of engage
ment with the contact 11 maintains both the ener
gizing coil- 15 and the relay coil 16 deenergized
until the contact arm 6i is again moved into en
gagement with the contact arm 5I> to energize
the energizing coil 15 in the manner pointed out
at are moved out of engagement with their con
tacts 'il and 33 by means of springs or gravity or
other means, not shown. Likewise, when neither
energizing coil 15 or bucking coil llt is energized,
- the switch arms 1d and it are maintained out of
engagement with their contacts ll and it, respec
tively, by means oi springs, gravity or other
means, not shown.
‘
_
-
One end of the secondary 'it is connected by
'a vwire til -to one end of the energizing coil it.
The other end of the energizing coil it is con
nected by wires il and tit to the brush ti. One
end ot bucking coil it is connected by a wire tit
to the junction of wire [email protected] with the energizing coil
it. The other end oi bucking coil it is connected
by a wire til toV the'brush. tl. The brush tt is
connected by a wire til to the switch arm it and
the switch arm ‘it is in turn connected by a wire
tt to the other end of secondary it. it wire tl
:lili connects the contact 'il with the junction of
wires ti and it.
'
\
When the contact arm t i Ais moved into engage». l
ment with the contact arm ti, a circuit is com
f pleted
energidng
fromcoil
the it,
secondary
wires tiitand
through
it, brush
wire it,
conducting sleeve dit, collar iii, contact arm ti,
contact arm ti, collar tt, conducting sleeve til,
brush tt, and wires 'it and it bach to the sec
immediately above.
l
10
„
Located outside of the building in any suitable
manner is an outdoor controller, generally desig
nated at t9. The outdoor controller tt comprises
a block it which is hollowed out to receive a bi
metallic element si suitably mounted on a post 15
il. The bimetallic element 9i responds to the
temperature of bloclr si and in `order to insure
that it will not be directly aiïected by outside tem
peratures, the block Si is closed by means oi'a
cover it. The bimetallic element si ,carries con 20
tacts it and it which are adapted to sequentially
engage contacts it and @l which are adjustably
mounted in an insulating block si fcarried by the
metallic block it. The„dístance between the con
tacts @il and @t is less than the distance between 25
the contacts it and il so that upon a decrease in
temperature oí block it, the contact iii iirst en
gages the contact it and upon a further decrease
in temperature, the contact it engages the'con
tact il. The block it is heated by a heater @i 30
and is cooled by the outdoor atmospheric condi
tions. The above mechanism comprising the out
door controller it is enclosed within a weather
tight casing tilt to protect the same from de
terioration by the. elements.
,
,
as
it primary iti oi a step-down transformer itt,
having a secondary itt is connected across the
line wires it and il. A relay coil designated at
ondary it. Completion oi this circuit energizes ,„ itt operates switch arms itt and itl so that
upon energization oi the relay coil itt, the switch
>and it into engagement with the contacts 'lli and arms itt and itl `are moved into engagement
with contacts itt and itt. Upon deenergization
ti. Movement of the switch arm it into engage
ment with the contact it places the stolrer it in oi relay coil itt, the switch arms tilt and itl
operation with the consequent generation ci are moved'out oi’ engagement with the contacts
.40 the energizing coil to move the switch arms it
vsteam in the boiler it and delivery oi steam -to
the heat exchangers or radiators ii. Movement
ci the switch arm ‘it into engagement with the
lili and tilt by means ot springs, gravity, or
other means, not shown.l One end oi' secondary
litt is connected by’a wire lili to the adjustable
contact 'lill completes a maintaining circuit trom
the secondary it through wire itil, energinngcoii
"iii, wires iii and til, contact il', switchg-a?ms ‘it
fand wire tt bach to the secondary ld. [email protected]
tion ci this maintaining circuit maintains the
relay coil ‘lli energized even though the contact
oi secondary itt. The switch arm litt is con
nected by a wire itil to the junction ci wires iii .
arm ti moves out -oi engagement with the con
, tact arm ti thus maintaining the boiler hired.
Water ‘or condensation iorined in the radiators
ii returns through the return risers iii, the return
header it and the return pipe il into the con
densate meter iii.' This causes rotation ot nor- ,
mally stationary buclret wheel ti and consequent
counter-clochwise rotation oi the normally sta
tionary shait di. When sumcient rotation of
shaft iii has talcen place to move the contact-arm
il into 'engagement with the contact arm tl, a
circuit is completed irom the secondary it
through wires it and titl, bucmng coil it, wire til,
brush til, conducting sleeve tt, collarv it, contact
arm il, contact arm ti, collar iii, conducting
sleeve di, brush tt, wires ti and tl, contact il,
70 contact 'arm 'it and wire tt bach tothe secondary
_.
it. Completion of this circuit causes energiza
tion oi bucking coil 'it which neutralizes the hold
ing vaction of the energizing coil ‘it whereby the
>switch arms 'it and it are moved outof'engage
vmoment lwith their contacts 11 and 3i.' Movement
contact
The other adjustable contact il is'
connected by wires lli and iii to'one end of the
relay coil llitt. The other end oi’ the relay >coil
iti-i is connected by a wire iii to the other end
and iii. The contact itt cooperating with the
switch arm itt .is connected by a wire iii to the 55
bimetallic element il located in the outdoor con
troller til.
.
*A
.The contact liti is connected by a wire llt to
the line wire il. The switch arm itil cooperating
with the contact itt is connected by wires ill
and lit to a variable resistance or rheostat iii.
The variable resistance or rheostat liti' is in
turn connected by a vnre lit to an ammeter
lil. The ammeter iii is connected by a wire
iii to one end oi heater it of outdoor controller
‘ tt. The other end ci the heater it is connected
by wires iii and iid to the other line wire it.
, One end of the Held ttìassociated with the rotor
tt' is connected by a wire lit to the junction oi
wires lili and lit. The other end oi ileld Gt is
connectedby a wire y llt to the junction oi wires
lit and iti. By Vreason oi' these electrical con
nections, the ñeld t5 and the heater @it are con
nected in parallel so thatwhen heater tt is ener
sized, the field $5 is likewise energized.
The
4
y
2,127,472
variable resistance- H9 and the ammeter |2|_ than on a Warm day. ’I'his extended movement
afforded means for adjusting and visually indi
of the contact arm 6| beyond its point of en- ,
cating the amount of heat delivered to the block gagement with the contact arm 5| is permitted
90 and the heater 99.
«
.
When the temperature of block 90 falls to a
predetermined value, the contact 94 is movedinto engagement with the contact 96 and when
the temperature of the block falls below this pre
determined value, the contact 95 is moved into
10 engagement' with the contact 91 to complete a
circuit from the secondary |04 lthrough wire H0,
contacts 96, 94, 95 and 91, wires IH and H2,
relay coil |05 and wire H3 back to the secondary
|04. Completion of this circuit causes energiza
15 tion of relay coil |05 to move the switch arms |06
and I 01 into engagement with their respective
contacts |06 and |09.
-
Movement of switch arm |01 into engagement
with the contact |09 completes a circuit from the
line wire 3| through wire H6, contact |09, switch
arm |01, wires H1 and H8, variable resistance
H9, wire |20, ammeter |2|, wire |22, heater 99
and wires |23 and |24 back to the other line wire
30.
by the strain release connection between the
collar 4| and the normally vstationary shaft 42.
When the boiler |1 is thus energized to gen
erate steam and deliver the same' to the heat
exchangers or radiators I2, heat is supplied to
the building by reason of the steam condensing in
the radiators l2. Condensate flows from the radi 10
ators l2 through the condensate meter 22 in the
manner pointed out above, and rotates the shaft
42 in a counter-clockwise direction. When the
shaft 42 has rotated sufiiciently far by the con
densation of steam so as to take up the lost mo 15
tion in the strain release connection, and to
move the contact arm 5| into engagement with
the contact arm 51, the stoker 25 is stopped to
prevent the further vgeneration of steam in the
boiler l1 and the delivery of such steam to the
radiators |2. In other words, when sufficient
steam has'been condensed in the radiators to
supply a suiîlcient -amount of heat to the> building
Movement of switch arm |01 into engage- , so as to move the contact arm 5| into engage
ment with the contact |09 also completes a circuit
ment with the contact arm 51, the further sup
from the line wire 3| through Wire H6, contact ‘ply of heat tothe building is stopped. Since
|09, switch arm |01, Wires H1 and |25, field 65 more counter-clockwise movement of the contact
and wires |26- and |24 back to the other line arms 51 and 6| is afforded during'cold weather
wire 30. Completion vof these two circuits causes than during warm weather, it follows that the
simultaneous energization of the heater 99 and shaft 42‘must also move farther ina counter
the field 65, 'I'his causes heating of block 90 clockwise direction on colder days than on warm
and rotation of shaft 53 in a counterclockwise
direction to move the contact arm 6 |-into engage~
ment with the contact arm 5|.
‘
Movement of switch arm |06 into engagement
with the contact |06 completesl a maintaining
circuit from the secondary |04, through Wire H0,
contacts 96 and 94, bimetallic element 9|, wire
H5, contact |08, switch arm |06, Wires H4 and
H2, relay co'il |05 and wire H3 back to the sec~
ondary |04. Completion of this circuit maintains
the relay coil |05 energized to maintain the switch
arms |06 and |01 in engagement with their con
tacts |08 and |09 until the temperature of block
90 has risen sufficiently to break contact between
the contacts 94 and 96. When the temperature
of block 90 has risen to the value which is suiil#
cient to break contacts 94 and 96, the relay coil
|05 is deenergized to move the switch arms |06
and |01 out of engagement with the contacts |08
and |09. This causes deenergization of the heater
99 and the field 65. The block 90 is then allowed .
to cool and further rotation of shaft 53 is pre
vented.
When the temperature of the block 90 is cooled
by the outdoor atmospheric conditions so as to
cause energization of the relay coil |05, heat is
supplied to the block 90 and the shaft 53 is ro
tated in a counter-clockwise direction. Such a
counter-clockwise rotation of the shaft 53 causes
engagement of the contact arm 6| with the con
tact arm 5| to cause- energi'zationV of the stoker
25 with the consequent generation -of~steam in
the boiler I1. Heat will be supplied to the block
90 and the shaft 53 and contact arms 6| and 5|
will continue to be rotated in a countelîrclockwise
ldirection until the bimetallic element 9| is satis
fied. On relatively cold days the length of time
required to bringl the block 90 up to temperature
so as to deenergize the relay coil |05 will be
longer than on relatively warm days. Since the
field 65 associated with the rotor 64 is energized
simultaneously with the heater 99, the contact
arms 51 and 59 will be positioned farther along
in a counter-clockwise direction on a cold day
er days. Therefore more condensate must -be de
livered to the condensate meter 22 during cold
Weather than during warm weather, which.
means that more heat is delivered to the build
ing during cold weather than during warm Weath
er. By use of the condensate meter 22 and the
switching mechanism 40 operated thereby, the
actual amount of heat delivered to the building
is accurately determined and correlated with the
amount of heat delivered to the outdoor con
troller 89. The capacity of the condensate meter.
the speed of rotation of the shaft 53 by the motor
rotor 64, and the amount of heat delivered to the
outdoor controller 89 under the control of the
rheostat or variable resistance H9, are so se
lected and designed that the amount of heat
actually delivered to the outdoor controller is
proportioned to the amount of heat actually de
livered to the building as the heat losses of the
outdoor controller are to the heat losses of the
building.
From the above it is seen that I have provided
a means for determining or measuring the
amount of heat required tol be delivered to a
building, a means for determining or measuring
the amount of heat actually delivered to the
building, and means in the form of a switching
mechanism for correlating the action of these two
means for controlling a firing means such as a.
stoker for a boiler.
In this manner the amount
of heat actually delivered to the outdoor- con
troller 89 and to the building is definitely as
certained and proportioned, whereby a substan
tially constant temperature is maintained with
in the building in accordance with outdoor at
mospheric conditions, including temperature,
wind and solar radiation regardless of the condi
tion of the fire bed and draft in Íthe boiler at
the time the call for heat is established.
Although I have disclosed one specific embodi
ment of ,my invention, various vmodifications
thereof may become apparent to those skilled in
the art and therefore this invention is to be lim
5
2, 127,47ß
ited only by the scope of the appended claims and 'wind and solar radiation, means responsive to
the temperature of the outdoor controller, a con
the prior art.
densate meter responsive to the amount of steam ,
I claim as my invention:_
l. In a system of the class described, means condensed in saidv heat. exchanger means, an
for delivering a conditioning medium to a space
electric motor, the-controller heating means and
the electric motor being energized when said
to be conditioned, means responsive to the condi
thermostatic means calls for heat, a switching
tioning load of the space for placing the deliver
ing means in operation, .and means responsive to :mechanism operated by said electric motor and
the amount of conditioning medium delivered to said condensate meter for controlling said ñring
`
10 the space for placing the delivery means out of means.
8. In a heatingsystem for a building, means
operation.
for supplying heat tothe building, means for
exchanger means in a space the temperature of f measuring the amount of heat supplied to the '
which is to be controlled, means for delivering building, a device located outside of said buildingÍ
and having heating means to cause said device to 15
15 ñuid to the heat exchanger means, means re-Y
be añected by outdoor atmospheric conditions in
sponsive to a condition indicative oi' the tempera
ture changing load for starting operation of the cluding temperature, wind and solar radiation
delivering means, and means responsive to the whereby said device measures the heat loss from
amount oi ñuid. delivered to the heat exchanger said building,_and control means operated by said
means for stopping operation oi the delivering device for supplying heat to the building, said 201i
2. In a system of the class described, heat
means.
control means also operated by said measuring
,
3. In a steam heating system for a building,
heat exchanger means, a boiler for supplying
steam to the heat exchanger means, firing means
for the boiler, and means for controlling said
firing means including means responsive to out
door atmospheric conditions including tempera
ture, wind and solar radiation and means respon
sive to the amount of steam delivered to the heat
30 exchanger means.
d. In a steam heating system -for a space hav
ing heat exchanger means, a boiler and a stoker
therefor, means for measuring the heating load
of the space, a condensate meter, and switching
mechanism operated by said condensate meter
and said measuring means for controlling said
stoker.
5. In a steam heating system for a building
having heat exchanger means, a boiler and a
40 stoker therefor, an outdoor controller for meas
means rior stopping the supply of heat to the
building,
»
-
,
9. In a heating system for a building, means
ior supplying heat t'ò the building, a device lo 25
cated outside of the building and subject to the
same atmospheric conditions as the building, 'said
device including heating means and thermostatic
means, means controlled by the thermostatic
means for energizing and deenergizing'the heat-` 30
ing means of the device to maintain the tempera
ture of the device within desired limits, control
means operated by the thermostatic means si
multaneously with the energizatlon of the heat
ing means of the device‘for measuring the heatv 35
loss from the building, control means for measur-ing the amount ofheat supplied to the building,
and means controlled by the conjoint action of
both control means for controlling the building
heat? supplying means.
uring the heating load of the building, a con
densate meter, and switching mechanism oper
ated by said condensate meter and said outdoor
l0. In a heating system for a building, means
outdoor controller is affected by temperature,
wind and solar radiation, means responsive to the
trol means operated by the thermostatic means
simultaneously with the energization of the heat
ing means of the device for measuring the heat
for supplying heat to the building, a device lo
cated outside of the building and subject to the
same atmospheric conditions as the building,
controller for controlling said stoker.
v
- 6. In a steam heatingl system i‘or a building,> said device including heating means and ther 45
'heat exchanger means, a boiler and a firing mostatic means, means 'controlled by the thermo
means, an outdoor controller subject to the same static means for energizing and deenergizing the
atmospheric conditions as the building, heating heating means of the device to maintain the tem
means for the outdoor controller whereby the perature of the device within desired limits, con
temperature of the outdoor controller, a con
densate meter responsive to the amount of steam
condensed in said heat exchanger means, and`
55 switching mechanism operated by said conden
sate meter and said thermostatic means for con
trolling said ñring means.
,
i
7. In a steam heating system- for a building,
heat exchanger means, a boiler _and a nring
means, an outdoor controller subject to the same
atmospheric, conditionsas the building, heating
means for the outdoor 'controller whereby the
outdoor controller is aiïected by temperature,`
loss from the building, control means for meas
uring the amount of heat supplied to the build
ing, means controlled by the ñrst control means 55
for. supplying heat to the building upon a call
ior heat and controlled by the second control
means for interrupting the supply of heat to the
building when the correct amount of heat has
been supplied to the building to makeup for the
heat _loss therefrom.
,
DANIEL G. TAYLOR.
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