U.S. patent number 3,775,994 [Application Number 05/177,639] was granted by the patent office on 1973-12-04 for refrigerator or the like with externally mounted water valve.
This patent grant is currently assigned to Whirlpool Corporation. Invention is credited to William J. Linstromberg, Duane C. Nichols.
United States Patent |
3,775,994 |
Linstromberg , et
al. |
December 4, 1973 |
REFRIGERATOR OR THE LIKE WITH EXTERNALLY MOUNTED WATER VALVE
Abstract
An appliance, such as a refrigerator, having means requiring the
delivery of water thereto, such as an automatic ice maker. Means
are provided for delivering water to the water requiring means
through a control valve mounted externally of the cabinet of the
appliance. Quick connect means are provided for facilitated
installation of the valve means both as to connection thereof to
electrical control means of the appliance and to the water
requiring means. The valve may be mounted in a suitable recess in
the cabinet which may be provided in the rear wall adjacent the
water requiring means for simplified connection therebetween.
Inventors: |
Linstromberg; William J.
(Evansville, IN), Nichols; Duane C. (Evansville, IN) |
Assignee: |
Whirlpool Corporation (Benton
Harbor, MI)
|
Family
ID: |
22649370 |
Appl.
No.: |
05/177,639 |
Filed: |
September 3, 1971 |
Current U.S.
Class: |
62/177; 62/340;
62/299 |
Current CPC
Class: |
F25D
23/00 (20130101); F25C 1/25 (20180101) |
Current International
Class: |
F25C
1/22 (20060101); F25D 23/00 (20060101); F25d
017/06 () |
Field of
Search: |
;62/340,177,440,353,299
;251/139 ;339/14R,14P,117,118 ;137/382 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wayner; William E.
Assistant Examiner: Tapolcai; William E.
Claims
Having described the invention, the embodiments of the invention in
which an exclusive property or privilege is claimed are defined as
follows:
1. In an appliance having a cabinet with a rear wall defining an
outwardly opening recess, water utilizing means utilizing water
supplied thereto in the operation of the appliance, and electrical
control means for controlling operation of the appliance, means for
controlling delivery of water to said water utilizing means,
comprising: valve means; mounting means for mounting said valve
means in said recess; electrical operating means for effecting the
operation of said valve means; cooperating plug-in means carried by
said valve means and wall for connecting said electrical operating
means electrically to said electrical control means for control of
the operation of said valve means by said electrical control means;
water conducting means for conducting water from said valve means
through said rear wall to said water utilizing means including duct
means extending through said wall and slip fit means for connecting
said valve means to said duct means, said electrical connecting
plug-in means and said water conducting slip fit means being
constructed to permit manual connection and disconnection of the
valve means for facilitated servicing; and flow connecting means
for connecting a source of water under pressure to said valve.
2. The appliance means of claim 1 including means for refrigerating
the interior of said cabinet and said wall includes insulating
means for preventing freezing of water at said valve by heat
transfer from said refrigerated cabinet interior.
3. The appliance means of claim 1 wherein said water utilizing
means comprises an automatic ice maker disposed within said
cabinet.
4. The appliance means of claim 1 wherein said water utilizing
means comprises an automatic ice maker disposed within said cabinet
inwardly adjacent said valve means.
5. The appliance means of claim 1 wherein said duct means includes
a flexible outer portion for facilitating the slip fitting of the
valve connection thereto while concurrently making the plug-in
connection of said electrical connecting means.
6. The appliance means of claim 1 wherein said valve is mounted
substantially fully within said recess and wherein sound-deadening
means are provided comprising cover means forming a closure for
said recess enclosing said valve means within said recess.
7. The appliance means of claim 1 wherein said electrical operating
means comprises a solenoid including an outer metal portion and
said electrical connector means includes means for grounding said
solenoid.
8. The appliance means of claim 1 wherein said valve means extends
to substantially flush with the outer opening of said recess.
9. The appliance means of claim 1 comprising a refrigeration
appliance wherein the water utilizing means comprises an automatic
ice maker and the electrical control means coordinates the
operation of the valve with the functioning of the ice maker.
10. In an appliance having a cabinet with a rear wall defining an
outwardly opening recess, water utilizing means utilizing water
supplied thereto in the operation of the appliance, and electrical
control means for controlling operation of the appliance, means for
controlling delivery of water to said water utilizing means,
comprising: valve means; mounting means for mounting said valve
means in said recess; electrical operating means for effecting the
operation of said valve means; cooperating plug-in means carried by
said valve means and wall for connecting said electrical operating
means electrically to said electrical control means for control of
the operation of said valve means by said electrical control means;
water conducting means for conducting water from said valve means
through said rear wall to said water utilizing means including duct
means extending through said wall and water conducting slip fit
means for connecting said valve means to said duct means, said
electrical connecting plug-in means and said water conducting slip
fit means being constructed to permit manual connection and
disconnection of the valve means for facilitated servicing; flow
connecting means for connecting a source of water under pressure to
said valve; and removable cover means forming a closure for said
recess.
11. In a refrigerator appliance having a refrigerated cabinet with
a rear wall defining an outwardly opening recess, disposed within
said cabinet and utilizing water supplied thereto in the operation
of the appliance, and electrical control means for controlling
operation of the appliance, means for controlling delivery of water
to said ice maker, comprising: valve means; mounting means mounting
said valve means in said recess; electrical operating means for
effecting the operation of said valve means; cooperating electrical
connecting plug-in means carried by said valve means and wall for
quick-connecting and quick-disconnecting said electrical operating
means relative to said electrical control means; water conducting
means for conducting water from said valve means through said rear
wall to said ice maker within said refrigerator cabinet including
duct means extending through said wall, and water conducting slip
fit means at an end of the duct means in said recess for connecting
said valve connecting plug-in means and said water conducting slip
fit means being constructed to permit manual quick-connection and
quick-disconnection of the valve means for facilitated servicing;
and flow connecting means for connecting a source of water under
pressure to said valve.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to water supply control devices and in
particular to water supply control devices for use in appliances
such as refrigerators or the like.
2. Description of the Prior Art
In the conventional refrigerator type appliance having an automatic
ice maker installed therein, water is supplied to the ice maker
from an external pressurized source. Flow of water to the ice maker
is automatically controlled by suitable electrical control means
associated with the ice maker operating a solenoid operated valve
connected in the water line. Conventionally, such valves are
disposed internally of the refrigerator cabinet and substantial
lengths of fluid ducts and wiring between the control and solenoid
operated valve are required. Further, the conventional solenoid
operated valve requires special fittings, adaptors, and tubing to
utilize the conventionally available solenoid valves for such
use.
Such structures further have the disadvantage of difficulty of
manufacture and servicing because of the relative inaccessibility
thereof within the cabinet.
In a common form of such apparatus, the solenoid valve is disposed
in the machinery compartment of the refrigerator, which compartment
is conventionally at the bottom of the refrigerator, whereas the
ice maker is conventionally located in an upper portion of the
refrigerator and in one common form of such refrigerator is located
in the freezer compartment thereof at the top of the
refrigerator.
SUMMARY OF THE INVENTION
The present invention comprehends an improved apparatus having a
water utilizing means disposed within a cabinet thereof with means
for controlling delivery of water to the water utilizing means
mounted externally of the cabinet for facilitated accessibility,
ease of manufacture and low cost.
More specifically, the invention comprehends an improved
refrigeration apparatus having an automatic ice maker wherein the
water flow control valve is disposed exteriorly of the refrigerator
cabinet adjacent the ice maker mechanism. In one preferred
embodiment, a recess is provided in the rear wall of the
refrigerator cabinet permitting the valve means to be disposed
substantially fully within the recess while yet providing the
highly desirable accessibility thereto.
The valve means may comprise a solenoid operated valve and the
means for connecting the valve means to the apparatus may include
quick disconnect means both for the electrical connections of the
solenoid to the electrical control of the apparatus and for the
fluid flow connections from the valve to the duct leading to the
automatic ice maker.
The solenoid of the valve may be provided with a metal cover having
an integral ground terminal adapted to be electrically connected to
the ground terminal of the connector means carried by the cabinet
for automatically grounding the solenoid of the valve when
installed.
The fluid duct means is effectively minimized in the present
appliance structure by locating the valve immediately adjacent the
ice maker. Thus, the supply line may be connected to the inlet of
the valve and the outlet of the valve connected to the duct
extending directly through the cabinet wall to the ice maker
eliminating the lengthy piping required in the conventional
apparatus where the valve is located remotely from the ice maker,
such as in the machinery compartment. Further, the electrical
control wiring is minimized by virtue of the short connection
permitted between the automatic ice maker control and the solenoid
valve which may be disposed immediately adjacent each other in the
disclosed arrangement.
The valve may be of conventional construction eliminating the need
for special fittings, as the inlet may be provided with a
conventional compression-type fitting for connecting conventional
copper tubing thereto and the outlet may comprise a slip fit
tubular element adapted to be received in a flexible tubular
connector leading to the automatic ice maker.
Thus, the means for controlling the delivery of water to the ice
maker of the present invention is extremely simple and economical
of construction while avoiding the disadvantages of the structures
of the prior art and providing the highly desirable features and
advantages discussed above.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the invention will be apparent
from the following description taken in connection with the
accompanying drawing wherein:
FIG. 1 is a fragmentary vertical elevation of a portion of a
refrigerator having an improved means embodying the invention for
controlling the delivery of water to a water-utilizing device
within the refrigerator cabinet;
FIG. 2 is a fragmentary horizontal section thereof;
FIG. 3 is a fragmentary transverse vertical section thereof looking
from the rear of the apparatus; and
FIG. 4 is an elevation of a quick connect electrical connector
carried by the cabinet.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the exemplary embodiment of the invention as disclosed in the
drawing, an appliance generally designated 10 having a water
utilizing device generally designated 11 illustratively comprises a
refrigerator wherein the water utilizing device comprises an
automatic ice maker in which the delivered water is formed
automatically into batches of ice bodies. The water for forming the
ice bodies is periodically delivered to the ice maker under the
control of an automatically operated valve means, herein comprising
a valve means 12 carried on the wall 13 of the refrigerator cabinet
and more specifically, is carried on the rear wall 14 immediately
adjacent the space 15 within the cabinet wall 13 in which the ice
maker 11 is disposed. A water fill duct 16 is provided extending
through the rear wall 14 for delivering the water to be formed into
ice bodies therein. The present invention comprehends that the
valve means 12 be disposed adjacent space 15 in a readily
accessible arrangement for facilitated installation and servicing
and for minimizing the cost of the apparatus by effectively
minimizing the length of water duct structures and electrical
wiring in the apparatus 10.
Valve means 12 is preferably received in a recess 17 opening
rearwardly in rear wall 14 so as to be substantially fully disposed
therein whereby the rear of the refrigerator may be closely
juxtaposed to a building wall, or the like, notwithstanding the
mounting of the valve means on the rear of the apparatus. As shown
in FIG. 1, the rear cabinet panel 18 may be formed to define the
recess 17 extending into the insulating material 19 of the cabinet
wall 13.
As best seen in FIG. 3, valve means 12 comprises a water valve
having a body 20 provided with a through bore 21 defining, at an
intermediate position, an annular valve seat 22 which is
selectively closed by a plunger 23 biased toward the valve seat by
a coil spring 24. The plunger is selectively urged away from valve
seat 22 by a solenoid coil 25 concentrically surrounding a reduced
diameter portion 26 of valve body 20. The solenoid is enclosed in a
metal housing 27 having a ground terminal 28 extending therefrom
for insertion into a ground female terminal 29 of a female
receptacle generally designated 30 carried by cabinet wall 14 at
the rear of recess 17. The solenoid is provided with a pair of
power terminals 31 and 32 received in female terminals 33 and 34,
respectively, of the receptacle 30 when the valve means 12 is
plugged thereinto, as shown in FIG. 1. Alternately, solenoid coil
25 may be of a double insulated construction eliminating the need
for a ground connection through terminals 28 and 29.
The lefthand end of valve body 20 comprises a diametrically
enlarged cylindrical portion 35 and is adapted to be mounted on the
metal wall panel 18 by a resilient mounting means comprising an
L-bracket 36 having one leg portion 37 fixedly secured to body
portion 35 by a pair of screws 38 and a second leg portion 39
fixedly secured to panel 18 by a screw 40 and a resilient grommet
41.
A conventional compression-type tube connector 42 is connected to
valve body portion 35 at the lefthand end 43 of bore 21, which is
diametrically enlarged to receive a conventional filter screen 44
and a resilient orifice 45 held against an inturned end 46 of a
cup-shaped body 47 by a tubular retainer 48. Connector 42 is
connected to the valve body by means of an adaptor 49 and a ring
seal 50 is provided coaxially about bore portion 43. Solenoid cover
27 may be secured to body portion 35 by a suitable screw 51 for
facilitated disassembly of the solenoid structure relative to the
valve body when desired. Alternately, screw 38 may extend through
body portion 35 to secure solenoid cover 27 to body portion 35.
When bracket 36 is metal and screw 38 extends through body portion
35 to secure solenoid cover 27 to body portion 35, ground terminal
28 and female terminal 29 may be eliminated inasmuch as solenoid
cover 27 can be grounded to cabinet 17 by screw 40.
The valve body further includes a further reduced diameter distal
end portion 52 defining an outlet bore 53 downstream of the valve
seat 22 for conducting water passed through the valve to the water
fill duct 16. Tubular end 52 is slip fitted into a tubular end 54
of a water tube connector 55 having an inner portion 56 extending
through the insulating material 19 and an outer head portion 57
from which tubular end 54 extends at a right angle to inner portion
56. Connector 55 is preferably formed of a flexible material, such
as a synthetic plastic, having minimum taste-affecting
characteristics relative to the water conducted therethrough and
herein is formed of polyvinylchloride. Illustratively, the tubular
portion 56 may be provided with an annular enlarged portion 58
spaced from head end 57 for gripping the edge 59 of the panel 18
defining an opening therethrough. Thus, the connector 55 is
removably installed on the wall panel 18 permitting flexing of the
outer portion 54 substantially to accept the insertion of valve
body end 52 therein to provide a quick connect connection of the
valve to the water delivery tube 16 for delivering water into the
mold (not shown) of the ice maker 11.
The installation of valve means 12 is extremely simple. The valve
assembly, including bracket 36, is installed in recess 17 by
inserting the electrical terminals 28, 31 and 32 into the female
socket terminals 29, 33 and 34 of connector 30 while concurrently
inserting the tubular end 52 of the valve body into the bore 61 of
the connector portion 54 which may be swung outwardly to permit
such insertion. The valve body is then resiliently retained in
place, with the terminals 28, 31 and 32 held in positive electrical
connected association with the plug 30 and the fluid transfer
connection of body portion 52 to connector 55 effectively
maintained, by means of screw 40.
Plug 30 is connected by suitable electrical wires 62 to the
electrical control 63 of ice maker 11 for automatic controlled
delivery of water to the ice maker by suitable selective
energization of the solenoid coil 25 of valve means 12. As shown in
FIG. 1, the valve means is substantially fully received in recess
17 thereby permitting a substantially flush disposition of the rear
wall 14 of the refrigerator cabinet with a rearwardly adjacent
building wall for minimizing space requirements of the refrigerator
and effectively avoiding damage to the valve means as might occur
where the valve means projects rearwardly from the cabinet wall. As
the recess 17 is fully opened rearwardly, access to the valve means
for facilitated connection of the incoming water line to connector
42 is provided and servicing of the valve means may be readily
effected.
While in the preferred embodiment the recess 17 is fully open, it
is to be appreciated that a removable cover for enclosing recess 17
could be provided for aesthetic reasons. As shown in FIG. 1, a
cover 71 could be provided extending across recess 17 enclosing the
valve means 12. Such a cover 71 would tend to reduce transmission
of noise generated by operation of the valve means 12.
Removal of the valve means from the apparatus when desired requires
only the removal of screw 40 and the quick disconnect of the
electrical and water flow connecting means. Metal housing 27 of the
solenoid effectively grounds the solenoid means through the ground
connection 29 of the electrical circuit plug 30 automatically upon
installation of the valve means as discussed above.
As the valve means is disposed immediately adjacent the ice making
mechanism, the length of wiring 62 and the length of the water flow
duct from the valve is effectively minimized for low cost of
construction and facilitated maintenance. As the solenoid is spaced
substantially from the machinery space wherein heat is normally
generated by the operation of the appliance operating means,
improved life of the solenoid is obtained. The use of resilient
grommet 41 and the resilient connector portion 54 further assures
minimizing vibration transfer from the valve means to the cabinet
while yet maintaining the desired electrical and flow conducting
connections. The use of the flow control washer 45 permits
facilitated regulation of the flow of water through the valve means
and in the illustrated embodiment, may be preselected to control
the flow rate at approximately 0.25 gallons per minute for optimum
filling of the ice maker mold.
The foregoing disclosure of specific embodiments is illustrative of
the broad inventive concepts comprehended by the invention.
* * * * *