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Патент USA US3040557

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June 26, 1962
B. A. PHILLIPS
3,040,547
ABSORPTION REFRIGERATION HOME APPLIANCE
Filed June_ 13, 1960
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United States Patent ()7 C6
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3,040,547
Patented June 26, 1962
2
with the flame of burner 20, and an exhaust ?ue 22 for
3,040,547
ABSQRPTION REFRIGERATION HOME
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APPLIANCE
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Benjamin A. Phillips, Benton Harbor, Mich, assignor to
Whirlpool Corporation, a corporation of Delaware
Filed June 13, 1960, Ser. No. 35,720
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5 ‘Claims. (Cl. 62—485)
This invention relates to refrigerators and in particu
lar to means for circulating air in an absorption refrigera
tor.
In an absorption refrigerator, the energy input to the
refrigeration system is in the form of heat delivered to
the refrigerant in a boiler in heat exchange relationship
exhausting the products of combustion from the burner.
A portion of burner 2.0, boiler 21, and ?ue 22 are carried
Within an insulated housing 23 which extends through
an opening 24 in rear wall 12 whereby air is delivered to
burner 20 from chamber 17 and the products of com
bustion are delivered from ?ue 22 to space 15.
The elements of the refrigeration system from which
it is desired to dissipate heat during the operation of the
10 refrigerator are disposed in space 15, as best seen in FIG
URE 1. More speci?cally, a ?nned condenser 25 is
mounted at the top of space 15 for delivery through a
conduit 26 to'the refrigerator evaporator (not shown) for
wardly of rear, wall 12. Recti?er 26a is in the line from
with a fuel burner. conventionally, the burner com 15 the boiler 21 to condenser 25. A gas heat exchanger 27
receives the refrigerant from the evaporator and delivers
prises a ?uid fuel burner to which air must be supplied to
it to the absorber pot 28 and associated ?nned absorber
support combustion thereat. Such absorption refrigera
29. A ?nned heat exchanger 30 is connected between
tors further include, as elements of the refrigeration sys
absorber pct 28 and boiler 21 for precooling the weak
tem, elements such as a condenser, an absorber, a recti?er,
liquid delivered from the boiler to the absorber pot.
and a weak liquid precooler from which it is necessary to
Thus, within space 15 are mounted four refrigeration
dissipate heat during the refrigeration cycle. Thus, it is
system elements from which heat is to_ be dissipated,
desirable to provide a ?ow of air in heat transfer relation
ship with such elements.
namely the condenser 25, recti?er 26a, the absorber 29,
and the precooler 30.
The present invention is concerned with anew and im
A flow of air to burner 20‘ for supporting combustion
proved means for providing such combustion and cool 25
therein, an exhausting of the products of combustion from
ing air. A prime feature of the invention is, therefore,
the provision of a new and improved air flow means for
burner 20 and through ?ue 22, and a movement of air
in heat transfer relationship with refrigeration system
. use in an absorption refrigerator having a burner and
elements 25, 26a, 29 and 30 are concurrently provided in
system components from which heat is to be dissipated.
refrigerator 10 by an air moving means herein compris
Another feature of the invention is the provision of
ing a conventional propeller fan 31 driven by an elec
such air flow means including a ?rst air passage asso
tric motor 32. Fan 31 is disposed in an opening 33 in
ciated with the burner for providing combustion air there
rear wall 12 below bottom wall 16 and is arranged to
to and terminating at a preselected space, means de?ning
deliver air from the lower portion of space 15 through
a second air passage associated with the system compo
nents for passing air in heat transfer relationship there 35 chamber 18 and outwardly from chamber 18 through an
opening 34 in the front wall 19 of the refrigerator cabinet
with and terminating at the space, and air moving means
in the space for moving air concurrently through each
11. Opening 34 extends horizontally substantially fully
of the air passages.
across the lower end of wall 19 thereby further de?ning
an inlet to chamber 17 for delivery of combustion sup
porting air to the burner 20. The cooling air is admitted
to chamber 15 through a suitable opening or grill 35
extending horizontally across space 15 at the upper end
thereof.
In operation, fan 31 draws air through a portion of
>
A further feature of the invention is the provision of
such air ?ow means arranged for automatic proportion
ing of the total air ?ow in the respective air passages for
proper operation of the refrigerator.
A further feature of the invention is the provision of
such air flow means further arranged for improved ex
hausting by the air moving means of the air moved 45 front opening 34, through chamber 17, to burner 20
thereby.
.
wherein it supports combustion of the fuel, through ?ue
22 in the form of products of combustion, and through
Other features and advantages will be apparent from
the lower portion of space 15 for delivery through cham
the following description taken in connection with the ac
ber 118 and front opening 34 outwardly from the cabinet
companying drawing wherein:
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FIGURE 1 is a rear elevation of an absorption refrig 50 11. ‘Concurrently, the fan draws air downwardly through
opening 35, in heat exchange relationship with condenser
erator provided with air ?ow means embodying the in
25, recti?er ‘26a, absorber 29, and pre-cooler 30, and to
vention, a portion of the refrigerator back wall being
the lower portion of space 15 for delivery through cham
broken away.
ber 18 and front opening 3-4 outwardly from the cabinet.
FIGURE 2 is an enlarged, broken horizontal section
thereof taken substantially along the line 2—2 of FIG 55 The amount of air ‘drawn downwardly through space 15
for cooling elements 25, 26a, 29 and 30 is proportioned
URE 1.
automatically by the cross sectional areas and the cor
In the exemplary embodiment of the invention as dis
responding pressure drop characteristics of the burner 20,
closed in the drawing, an absorption refrigerator gen
generator ?ue 22 and ?ue baffle 38, and the portions of
erally designated 10 is provided with a suitable cabinet
11. Extending rearwardly from the back wall 12 of the 60 the refrigeration apparatus in the air ?ow path down
wardly through space 15 so that approximately 98% to
cabinet is a frame 13 carrying at its rearward end a back
99% of the air discharged through front opening 34 by
panel 14 de?ning therebetweeu a long vertical space
15.
Spaced above the bottom of rear Wall 12 and ex
fan 31 comprises the cooling air moved downwardly ’
through space 15. The amount of air drawn through
tending horizontally forwardly therefrom is a bottom wall
16. A vertical divider 37 extends downwardly from bot 65 burner 20 assures full combustion of the fuel therein
permitting delivery of the products of combustion to the
tom wall 16 and perpendicularly to rear wall 12 to divide
space in front of the refrigerator without harmful effects
the space below bottom ‘wall 16 into a ?rst chamber 17
to any occupants thereof.
f
and a second chamber 18 extending from rear Wall 12
Having described my invention as related to the em
forwardly to front wall 19 of cabinet 11.
bodiment shown in the accompanying drawing, it is my
Within chamber 17 is provided a burner 20, a boiler 70 intention that the invention be not limited by any of the
21 for holding refrigerant in heat transfer relationship
details of description, unless otherwise speci?ed, but
3,040, 547
rather be construed broadly within its spirit and scope
as set out in the accompanying claims.
The embodiment of the invention in which an ex
clusive property or privilege is claimed is de?ned as
follows:
.1. In an absorption refrigerator having a cabinet
A
sage associated with the burner for providing combustion
air thereto, said ?rst air passage terminating at a pre
selected space; means de?ning a second air passage as
sociated with said system components for passing air in
heat tranfer relationship therewith, said second air pas
sage terminating at said space and having a cross section
co-ordinated with the air ?ow impeding characteristic of
the burner and the air ?ow impeding characteristic of
the system components preselected to pass approximately
means comprising: means de?ning a ?rst air passage as
sociated with the burner for providing combustion air 10 98% of the total air passed through said passages; and
air moving means in said space for moving air con
thereto, said ?rst air passage terminating at a preselected
currently through each of said air passages.
space; means de?ning a second air passage associated with
4. In an absorption refrigerator having a cabinet in
said system components for passing air in heat transfer
cluding top and bottom portions, a burner and system
relationship therewith, said second air passage terminating
at said space; means de?ning a third, common air passage 15 components from which heat is to be dissipated, air
?ow means comprising: means de?ning a ?rst generally
leading from said space outwardly from the bottom por
horizontally extending air passage in the bottom portion
tion of the cabinet; and air moving means in said space for
having a bottom portion, a burner, and system com
ponents from which heat is to be dissipated, air flow
positively moving air concurrently through each of said
of the cabinet and having an inlet end associated with the
burner for providing combustion air thereto, said ?rst
2. In an absorption refrigerator having a cabinet hav 20 air passage terminating at the end opposite said inlet
in a preselected space; means de?ning a second, generally
ing a bottom portion, a burner, and system components
vertical air passage extending between said top and bot
from which heat is to be dissipated, air ?ow means com
tom portions and associated with said system components
prising: means de?ning a ?rst air passage associated with
for passing air in heat transfer relationship therewith, said
the burner for providing combustion air thereto, said
?rst air passage terminating at a preselected space; means 25 second air passage terminating in said space, said space
being at the lower end of said second air passage; and air
de?ning a second air passage associated with said system
moving means in said space for moving air concurrently
components for passing air in heat transfer relationship
through each of said air passages.
therewith, said second air passage terminating at said
air passages.
space; means de?ning a third air passage leading from
said space for delivery of the air from said ?rst and
second passages to an exhaust outlet in the bottom por
tion of the cabinet; and air moving means in said space
for positively moving air concurrently through each of
said air passages and outwardly through said outlet.
S. The air ?ow means of claim 4 including means de
?ning a third air passage leading from said space to an
exhaust outlet adjacent the inlet of the ?rst air passage.
References Cited in the ?le of this patent
UNITED STATES PATENTS
3. In an absorption refrigeratior having a burner, and
1,736,871
Backstrom ___________ __ Nov. 26, 1929
system components from which heat is to be dissipated, air
2,040,174
Hainsworth __________ __ May 12, 1936
?ow means comprising: means de?ning a ?rst air pas
2,163,815
Thomas _____________ __ June 27, 1939
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