U.S. patent application number 17/299112 was filed with the patent office on 2022-03-24 for ice machine.
The applicant listed for this patent is LG ELECTRONICS INC.. Invention is credited to Donghoon LEE, Wookyong LEE, Sunggyun SON.
Application Number | 20220090836 17/299112 |
Document ID | / |
Family ID | |
Filed Date | 2022-03-24 |
United States Patent
Application |
20220090836 |
Kind Code |
A1 |
LEE; Donghoon ; et
al. |
March 24, 2022 |
ICE MACHINE
Abstract
The present disclosure provides an ice machine including a
cabinet, a tray disposed inside the cabinet, wherein ice is formed
on the tray, a nozzle disposed below the tray and spraying water
toward the tray, a storage tank for storing the water to be
supplied to the nozzle therein, a water-level sensor disposed in
the storage tank, a pump connected to the nozzle by a guide pipe
and supplying the water stored in the storage tank to the nozzle, a
supply pipe for supplying water to the tray, a water supply valve
disposed on the supply pipe, and a controller that opens and closes
a flow path of the water supply valve based on a water-level
measured by the water-level sensor.
Inventors: |
LEE; Donghoon; (Seoul,
KR) ; SON; Sunggyun; (Seoul, KR) ; LEE;
Wookyong; (Daejeon, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LG ELECTRONICS INC. |
Seoul |
|
KR |
|
|
Appl. No.: |
17/299112 |
Filed: |
November 18, 2019 |
PCT Filed: |
November 18, 2019 |
PCT NO: |
PCT/KR2019/015744 |
371 Date: |
June 2, 2021 |
International
Class: |
F25C 1/25 20060101
F25C001/25; F25C 1/18 20060101 F25C001/18 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 12, 2018 |
KR |
10-2018-0159935 |
Claims
1. An ice machine comprising: a cabinet; a tray disposed inside the
cabinet to form ice on the tray; a nozzle disposed below the tray
for spraying water toward the tray to form the ice; a storage tank
for storing the water to be supplied to the nozzle; a water-level
sensor disposed at the storage tank; a pump connected to the nozzle
by a guide pipe for supplying the water stored in the storage tank
to the nozzle; a supply pipe for supplying external water to the
tray for supplying to the storage tank; a water supply valve
disposed at the supply pipe; and a controller configured to open
and close a flow path of the water supply valve based on a
water-level measured by the water-level sensor at the storage
tank.
2. The ice machine of claim 1, wherein the controller is configured
to open the water supply valve and supply the external water to the
tray when the water-level sensor detects that the water-level is
lowered to a predetermined level or below at the storage tank.
3. The ice machine of claim 1, wherein the water-level sensor
periodically transmits water-level information to the
controller.
4. The ice machine of claim 1, further comprising a through pipe
disposed at the tray such that the external water supplied from the
supply pipe falls through the through pipe toward the storage
tank.
5. The ice machine of claim 1, wherein the tray has a plurality of
cells for respectively forming the ice, and a plurality of through
pipes are disposed at the tray, a through pipe penetrating a
respective cell.
6. The ice machine of claim 1, wherein the storage tank is disposed
below the tray.
7. The ice machine of claim 1, further comprising: a compressor for
compressing a refrigerant to cool the tray.
8. The ice machine of claim 7, wherein the controller is configured
to open the water supply valve when the compressor starts to
operate.
9. The ice machine of claim 1, further comprising: a door for
opening and closing an opening of the cabinet; and a door opening
and closing sensor for detecting the opening and closing of the
door.
10. The ice machine of claim 9, wherein the controller is
configured to open the water supply valve when the door opening and
closing sensor detects the closing after the opening of the
door.
11. The ice machine of claim 1, wherein the controller is
configured to open the water supply valve after a predetermined
period of time has passed even when the water-level sensor does not
detect that the water-level has lowered to a predetermined level or
below.
12. An ice machine comprising: a cabinet; a tray disposed inside
the cabinet to form ice on the tray; a storage tank for storing
water to be supplied to the tray; a water-level sensor disposed at
the storage tank; a pump connected to the storage tank to pump the
water stored in the storage tank to the tray; a supply pipe for
supplying external water to the storage tank; a water supply valve
disposed at the supply pipe; and a controller configured to open
and close a flow path of the water supply valve based on a
water-level measured by the water-level sensor at the storage
tank.
13. The ice machine of claim 12, wherein the controller is
configured to open the water supply valve and supply the external
water to the storage tank when the water-level sensor detects that
the water-level is lowered to a predetermined level or below at the
storage tank.
14. The ice machine of claim 12, wherein the water-level sensor
periodically transmits water-level information to the
controller.
15. The ice machine of claim 12, further comprising: a compressor
for compressing a refrigerant to cool the tray.
16. The ice machine of claim 15, wherein the controller is
configured to open the water supply valve when the compressor
starts to operate.
17. The ice machine of claim 12, further comprising: a door for
opening and closing an opening of the cabinet; and a door opening
and closing sensor for detecting the opening and closing of the
door.
18. The ice machine of claim 17, wherein the controller is
configured to open the water supply valve when the door opening and
closing sensor detects the closing after the opening of the
door.
19. The ice machine of claim 12, wherein the controller is
configured to open the water supply valve after a predetermined
period of time has passed even when the water-level sensor does not
detect that the water-level has lowered to a predetermined level or
below.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to an ice machine, and more
particularly, to an ice machine that may be installed in a kitchen
sink and conserve water.
BACKGROUND ART
[0002] An ice machine installed in a kitchen sink for providing ice
to a user typically has a structure in which transparent ice is
made by applying a direct cooling cycle, an ice making portion for
making the ice is disposed at a top of the ice machine, and the ice
is transferred to an ice storage portion at a bottom of the ice
machine through an ice-removal process and stored in the ice
storage portion.
[0003] In order to make the transparent ice by applying the direct
cooling cycle, water is sprayed through a pump to a bottom of the
tray, which is in contact with an evaporation pipe (EVA) to be kept
at low temperature in a state in which water is stored in a storage
tank. In this connection, water to be circulated is supplied to the
storage tank, and the water is supplied only for a predetermined
time through time control. In general, a flow rate varies even for
the same time period depending on a water pressure condition in a
region where the ice machine is installed. Thus, excessive water
over a predetermined amount will be supplied, and overflowing water
will be discarded. Typically, when one ice making cycle is driven,
a ratio of drained water amount out of water usage amount is
estimated to be about 80%. That is, according to the prior art,
most of the supplied water is not used and is discarded.
[0004] When applying a conventional technique, since excessive
water over a proper amount is supplied and then discarded, an
amount of water used in a product is increased, which causes
unnecessary waste of a water resource. In addition to the waste of
the water resource, the water supplied to the ice machine passes
through a filter and then is supplied to the storage tank, so that,
when the amount of water used is increased, a life of the filter is
shortened.
DISCLOSURE OF INVENTION
Technical Problem
[0005] The present disclosure is to solve the above problems, and a
purpose of the present disclosure is to provide an ice machine that
supplies only an appropriate amount of water to save water.
[0006] In addition, another purpose of the present disclosure is to
provide an ice machine in which a water-level sensor is mounted in
a storage tank, so that an appropriate amount of water is supplied
regardless of a water pressure of an ice machine installation
condition, thereby reducing an amount of water discarded.
Solution to Problem
[0007] The present disclosure minimizes an amount of drained water
by mounting a water-level sensor in a storage tank. In addition,
when additional water supply is required to improve hygiene of
water in the storage tank and a transparency of made ice, the water
may be supplied for a predetermined time after a water-level sensor
signal is acquired. Further, when a certain ice-making cycle is
selected, the additional water supply may be processed every
selected period.
[0008] Further, in the present disclosure, only set amount of water
is supplied to the storage tank, which stores water for spraying
the water to a bottom of a tray, so that an amount of water
discarded resulted from the additional water supply may be
reduced.
[0009] In the present disclosure, since a difference in a flow rate
occurs due to a water pressure depending on an installation
condition of the ice machine, unlike the conventional technique of
performing time control, only a selected amount of water is
supplied by a water-level sensor.
[0010] Further, in the present disclosure, in order to prevent the
hygiene problem of the water stored in the storage tank and
increase of ice opacity, the additional water supply may be
performed at regular intervals.
[0011] One aspect of the present disclosure proposes an ice machine
including: a cabinet; a tray disposed inside the cabinet, wherein
ice is formed on the tray; a nozzle disposed below the tray and
spraying water toward the tray; a storage tank for storing the
water to be supplied to the nozzle therein; a water-level sensor
disposed in the storage tank; a pump connected to the nozzle by a
guide pipe and supplying the water stored in the storage tank to
the nozzle; a supply pipe for supplying water to the tray; a water
supply valve disposed on the supply pipe; and a controller that
opens and closes a flow path of the water supply valve based on a
water-level measured by the water-level sensor.
[0012] In one implementation, the controller may open the water
supply valve and supply the water to the tray when the water-level
sensor detects that the water-level is lowered to a predetermined
level or below.
[0013] In one implementation, the water-level sensor may
periodically transmit water-level information to the
controller.
[0014] In one implementation, each through pipe may be disposed in
the tray such that the water supplied to the supply pipe may fall
through each through pipe to the storage tank.
[0015] In one implementation, the tray may have a plurality of
cells for respectively forming ice cubes, and each through pipe may
penetrate each cell vertically.
[0016] In one implementation, the storage tank may be disposed
below the tray.
[0017] In one implementation, the ice machine may further include a
compressor for compressing a refrigerant to supply cold-air to the
tray.
[0018] In one implementation, the controller may open the water
supply valve when the compressor starts to operate.
[0019] In one implementation, the ice machine may further include:
a door for opening and closing a front opening of the cabinet; and
a door opening and closing sensor for detecting the opening and
closing of the door.
[0020] In one implementation, the controller may allow the water
supply valve to open the flow path when the door opening and
closing sensor detects closing after opening of the door.
[0021] In one implementation, the controller may allow the water
supply valve to open the flow path after a predetermined period of
time even when the water-level sensor does not detect that the
water-level is lowered to a predetermined level or below.
Advantageous Effects of Invention
[0022] Only the appropriate amount of water may be supplied by the
water-level sensor according to the present disclosure, so that the
amount of water used may be reduced to prevent waste of the water
resource.
[0023] In addition, an amount of water flowing into a filter is
reduced as the amount of water used decreases, which increases a
filter replacement cycle, thereby reducing a filter replacement
cost for a consumer. From a manufacturer's point of view, a limit
life span of the filter of a certain cycle is reduced, so that a
volume utilization of a machine room may be increased resulted from
cost reduction and volume reduction.
BRIEF DESCRIPTION OF DRAWINGS
[0024] FIG. 1 is a view illustrating an ice machine according to an
embodiment of the present disclosure.
[0025] FIG. 2 is a view illustrating an interior of FIG. 1.
[0026] FIG. 3 is a view illustrating main portions of FIG. 2.
[0027] FIG. 4 is a block diagram according to an embodiment.
[0028] FIG. 5 is a view illustrating a concept of an
embodiment.
MODE FOR THE INVENTION
[0029] Hereinafter, a preferred embodiment of the present
disclosure that may specifically realize the above purposes will be
described with reference to the accompanying drawings.
[0030] In this process, a size, a shape, or the like of a component
shown in the drawings may be exaggerated for clarity and
convenience of description. In addition, terms that are
specifically defined in consideration of the composition and
operation of the present disclosure may vary depending on the
intention of a user or an operator or a custom. Definitions of such
terms should be made based on contents throughout the
specification.
[0031] FIG. 1 is a view illustrating an ice machine according to an
embodiment of the present disclosure. Further, FIG. 2 is a view
illustrating an interior of FIG. 1. Further, FIG. 3 is a view
illustrating main portions of FIG. 2.
[0032] Referring to FIG. 1, an ice machine according to the present
disclosure includes a cabinet 10 for forming an outer shape of the
ice machine and a door 20 for opening and closing a front opening
of the cabinet 10. The door 20 may be coupled to one side of the
cabinet 10 to open and close the opening of the cabinet 10 while
pivoting left and right about a pivoting shaft in a vertical
direction.
[0033] A handle 22 is disposed at one side of the door 20, so that
a user may grip the handle 22 of the door 20 to pivot the door
20.
[0034] FIG. 2 is a view illustrating the interior in a state in
which a side of FIG. 1 is cut. Referring to FIGS. 2 and 3, a
machine room 12 is defined below the cabinet 10. The machine room
12 has a compressor 90 disposed therein that compresses a
refrigerant as one component of a freezing cycle. The compressor 90
may compress the refrigerant and finally generate cold air.
[0035] The machine room 12 may be defined in a lower portion of the
cabinet 10 to reduce noise and vibration generated.
[0036] An evaporator 30 in which the refrigerant compressed by the
compressor 90 is cooled while being evaporated is disposed at an
upper portion of the cabinet 10. The evaporator 30 is formed in a
pipe shape, and in contact with a tray 32. The tray 32 is cooled by
the cold refrigerant passing through an interior of the evaporator
30, and then when water comes into contact with the cold tray 32,
the water is converted into ice.
[0037] The evaporator 30 may be formed in a twisted shape to cool a
space in which a plurality of ice cubes are generated defined in
the tray 32. The tray 32 may include a plurality of cells in which
the plurality of ice cubes are respectively generated.
[0038] A nozzle 40 for spraying water toward the tray 32 is
disposed below the tray 32. The nozzle 40 sprays the water in an
upward direction to spray the water into each cell of the tray
32.
[0039] A storage tank 50 for storing the water supplied to the
nozzle 40 therein is disposed below the nozzle 40. A first guide
pipe 72 is connected to the storage tank 50, and the first guide
pipe 72 is connected to a pump 70. A second guide pipe 74 is
connected to the pump 70, and the second guide pipe 74 is connected
to the nozzle 40. After the water stored in the storage tank 50 is
flowed to the pump 70 through the first guide pipe 72, the water is
flowed to the nozzle 40 through the second guide pipe 74 and then
sprayed from the nozzle 40.
[0040] A supply pipe 56 for supplying water to the tray 32 is
disposed on the tray 32. One end of the supply pipe 56 is connected
to an external water supply. Water supplied from the external water
supply is guided to the supply pipe 56 and then sprayed on a top of
the tray 32.
[0041] The tray 32 has a plurality of cells 33 in which a plurality
of ice cubes are respectively generated. As each cell 33 comes into
contact with the water sprayed from the nozzle 40, ice is generated
inside each cell 33. Each through pipe 34, which is vertically
penetrated, is disposed in each cell 33, so that the water supplied
through the supply pipe 56 falls down through each through pipe 34.
Each through pipe 34 is disposed in each cell 33, and is formed to
penetrate a central portion of each cell 33, so that the water may
flow in a direction perpendicular to each cell 33 (see FIG. 5).
[0042] A drain pipe 54 is disposed in the storage tank 50, so that,
when a water-level of the storage tank 50 exceeds a certain level,
the water may be discharged from the storage tank 50 through the
drain pipe 54. The drain pipe 54 is disposed in a form of a tube
erected to have a certain vertical level inside the storage tank
50. When the water-level inside the storage tank 50 is higher than
the vertical level of the drain pipe 54, as the water enters the
drain pipe 54, the water-level of the storage tank 50 is no longer
increased.
[0043] A water-level sensor 84 is disposed in the storage tank 50,
so that the water-level of the storage tank 50 may be measured.
While the drain pipe 54 serves to prevent the water-level of the
storage tank 50 from rising above a certain level, the water-level
sensor 84 may measure the water-level of the water stored in the
storage tank 50.
[0044] An ice bin 80 is disposed below the storage tank 50, so that
the ice generated in the tray 32 may be dropped and stored in the
ice bin 80. In order to use the stored ice, the user may access the
ice bin 80 after opening the door 20 and then may scoop the ice
from the ice bin 80. The drain pipe 54 extends downward to
penetrate a bottom of the ice bin 80, so that the water discharged
from the drain pipe 54 is flowed to the bottom of the ice bin
80.
[0045] FIG. 4 is a block diagram according to an embodiment.
Further, FIG. 5 is a view illustrating a concept of an
embodiment.
[0046] Referring to FIGS. 4 and 5, in one embodiment, a door
opening and closing sensor 14 for detecting opening and closing of
the door 20 is disposed. The door opening and closing sensor 14 may
be located at a portion where the door 20 is in contact with the
cabinet 10 to detect whether the door 20 is in contact and sealed
with the cabinet 14. Information on whether the door is opened or
closed may be transmitted from the door opening and closing sensor
14 to a controller 100.
[0047] Information on whether the compressor 90 is driven is also
transmitted to the controller 100. The controller 100 may drive the
compressor 90 or stop driving the compressor 90.
[0048] Water-level information measured by the water-level sensor
84 may be transmitted to the controller 100. When the water-level
sensor 84 detects that the water-level of the storage tank 50 is
lowered to a certain level or below, the controller 100 may supply
water. The water-level sensor 84 may periodically transmit the
water-level information to the controller 100.
[0049] A water supply valve 58 for opening and closing a flow path
in the supply pipe 56 is disposed on the supply pipe 56. When the
water supply valve 58 opens the flow path, the water is supplied to
the tray 32 through the supply pipe 56, and when the water supply
valve 58 closes the flow path, no water is supplied to the tray 32
through the supply pipe 56.
[0050] The controller 100 may determine a situation in which the
water should be supplied to the storage tank 50. When the water
should be supplied to the storage tank 50, the controller 100 opens
the water supply valve 58.
[0051] When the water-level sensor 84 detects that the water-level
of the storage tank 84 is lower than the certain water-level, it
may mean the situation in which the water should be supplied to the
storage tank 50. In addition, when the door opening and closing
sensor 14 detects that the user opens and then closes the door 20,
it may mean a situation in which the water should be supplied to
generate the ice. In addition, when the compressor 90 starts to
operate, it may mean a situation in which the water should be
supplied into the storage tank 50 to generate the ice on the tray
32. In various situations, the situation in which the ice should be
generated on the tray 32 may occur.
[0052] In order for the ice to be generated on the tray 32, the
water should be supplied into the storage tank 50. Further, the
controller 100 may allow the water supply valve 58 to open the flow
path, thereby supplying the water to the tray 32. When the water is
supplied to the tray 32, the water is lowered to a lower portion of
the tray 32 through the plurality of through pipes 34 from an upper
portion of the tray 32, then passes through the nozzle 40, and then
is stored in the storage tank 50. When the water is flowed to the
storage tank 50, the pump 70 is driven, so that the water in the
storage tank 50 is guided to the nozzle 40 after passing through
the first guide pipe 72 and the second guide pipe 74. Since the
water is sprayed from the nozzle 40 to the tray 32, and the tray 32
is cold by the evaporator 30, the ice may be generated on the tray
32.
[0053] The ice is generated while the water is circulated by the
pump 70 located below the tray 32, and the water is initially
supplied through the supply pipe 56. In this connection, the
water-level sensor 84 is mounted in the storage tank 50, and when
the certain water-level is satisfied, the compressor 90 is driven
to stop the water supply and generate the ice.
[0054] When additional water is only supplied as much ice, which is
formed by a portion of the stored water being frozen, and is flowed
to the ice bin 80, the water stored in the storage tank 50 may be
reduced, and an amount of the water finally circulated may be
reduced.
[0055] In this case, a transparency of the ice may decrease due to
a hygiene problem of the water or as an accumulation of minerals in
the storage tank increases. To prevent this, the controller 100 may
control the water supply valve 58 to open the flow path and supply
the water when a certain time passes regardless of the water-level
measured by the water-level sensor 84.
[0056] In addition, a minimum period in which the problem does not
occur may be selected based on the same principle, so that the
controller 100 may control the water supply valve 58 to open the
flow path based on the selected period.
[0057] In the present disclosure, after supplying enough water to
satisfy the water-level measured by the water-level sensor, the
water supply valve 58 may open the flow path for a certain time to
supply the additional water. In this case, the opening of the flow
path may be performed every selected period.
[0058] The present disclosure is not limited to the above-described
embodiment. Further, as seen from the appended claims,
modifications are possible by those skilled in the art of the
present disclosure, and such modifications fall within the scope of
the present disclosure.
* * * * *